BRPI0400925B1 - FLOATING INSTRUMENT INSERT FOR A TOOL. - Google Patents

Description

Patent Descriptive Report for "FLOATING INSTRUMENT FOR A TOOL".

Field of the Invention The present invention relates to an instrument insert for use in a tool of the type comprising an inner member and an outer member, preferably a bore bottom tool that includes a rotating inner member or shaft and a non-rotating outer member or housing. More particularly, the present invention relates to a floating instrument insert mounted between the inner and outer members of the tool that compensates for relative sliding or longitudinal movement between the inner and outer members.

Background of the Invention Directional drilling involves controlling the direction of a drill hole as it is drilled. Specifically, the goal of directional drilling is to reach a target underground destination, typically a potential hydrocarbon production formation, with a pipe cable. In order to perform the drilling operation, specialized hole bottom tools are used. These tools often include various sensors and other electronic components or equipment for providing desired information or data regarding the environmental conditions of the surrounding formation that is drilled or for providing desired information or data and communication instructions regarding operating parameters. and directional lines of the pipe cable into the probe hole. Various hole bottom tools typically include an inner member, such as a rotary shaft extending into an outer member, such as a housing. In addition, various instruments may need to be mounted within the tool at the interface between the inner and outer limbs. For example, the instrument provided at the interface may consist of a sensor for sensing the rotation or orientation of the inner limb with respect to the outer limb. In addition, the instrument provided at the interface may consist of a coupling assembly or device for communicating or transmitting electrical signals or electricity along the tool between the inner and outer members. For example, electrical signals or electricity may incorporate sensed data, instructions, or information that is communicated between a hole location above and a hole-bottom sensor or electronic component. For example, it is often necessary or desirable to locate or position the hole-bottom sensor within a non-rotating member or component of a tool along a rotating tube handle to enable or facilitate operation or operation. appropriate sensor Accordingly, an electrical signal incorporating data communications, sensed information, instructions and / or force may need to be transmitted between a non-rotating tool housing member containing the borehole sensor and a rotating tool member connected to a tool axis. transmission or other section of the rotary tube cable. Accordingly, an instrument consisting of a mounting or coupling device may be mounted within the interface between the rotating and non-rotating members of the tool. It has been found to be particularly difficult to transmit force across the interface compared to data transmission. For example, slip ring assemblies are often used for the transfer of force and data between rotating and non-rotating members, as described in United States Patent No. 4,031,544, issued June 21, 1977, Lapetina, U.S. Patent No. 5,841,734, issued November 24, 1998, by Ritter et al., U.S. Patent No. 6,238,142, issued May 29, 2001, to Harsch and United States Patent No. 6,392,561, issued May 21, 2002, to Davies et al. Slip ring assembly provides electrical contact between a slip ring and contact brushes, each of which is mounted with one of the rotating and non-rotating members of a tool. The effectiveness of electrical signal transmission by slip ring mounting depends on the alignment of the contact brushes with the slip ring. Given the mounting of these components with the rotating and non-rotating members of the tool, the effectiveness of electrical signal transmission therefore depends on maintaining longitudinal alignment between the rotating and non-rotating members. In other words, any conditions or influences on the limbs that cause relative longitudinal movement between them may have an adverse impact on the slip ring assembly. As an alternative to the use of a slip ring assembly, force transfer and data communication may be provided by inductive coupling of the rotating and non-rotating members of a tool. For example, an electromagnetic coupling device may be provided at the interface between the rotary and non-rotating members of the tool as described in United States Patent No. 6,244,361, issued June 12, 2001, to Comeau et al. US Patent 6,340,063. However, inductive coupling may not be desirable in some applications. Moreover, it has been observed that inductive coupling is as effective as a slip ring assembly for power transmission compared to data communication. Finally, any instrument mounted within the interface between the rotating and non-rotating tool members may be adversely impacted by the relative longitudinal movement of these members. US 6,343,649 refers to a system for facilitating downhole communication between an item of equipment installed on a tubular column and a tool carried into the tubular column. The system comprises a first communication device associated with the item of equipment and a second communication device included with the tool, wherein the system allows communication to be established between the first and second devices when the second device is placed in sufficiently close proximity. with the first device. Communication between the first and second devices may be from any of a variety of media, including electromagnetic waves, inductive coupling, pressure pulses, direct electrical contact, etc. The means of communication may also be the means by which power is supplied to the first device. In order to ensure the correct placement of the first and second devices, and thus the establishment of communication, the tool is provided with one or more locking members, shoulders, triggers or keys configured for cooperative engagement with a formed profile. inside the equipment housing. However, US 6,343,649 does not provide for an instrument insert for mounting between the tool and the equipment. In addition, since the tool is involved with the equipment, there does not appear to be any mechanism allowing longitudinal movement of the tool and equipment relative to each other. In particular, with respect to hole bottom tools, conditions can be found in the probe hole by the tool that tend to interfere with longitudinal alignment between the inner and outer members of the tool. In particular, borehole conditions, including vibration, temperature changes, pressure changes, and the application of stress and compression forces to the tool, may result in longitudinal movement of one member relative to the other. For example, the inner member may undergo an amount of expansion or contraction resulting in longitudinal movement relative to the outer member. When an instrument is mounted within the interface between the inner and outer limbs, this relative longitudinal movement may result in misalignment of the instrument components, causing an adverse impact on proper instrument operation. For example, when slip ring mounting is done within the interface, relative longitudinal movement of the tool's inner and outer limbs may result in misalignment of the slip ring and brush contacts, thereby potentially interfering with data or force transmission between them. There is therefore a need in the industry for a device or apparatus for mounting an instrument on a tool of the type comprising an inner member and an outer member, in which the inner and outer members are capable of an amount of movement. relative longitudinal position and in which the instrument is required to be mounted at the interface between the limbs. More particularly, there is a need for a device or apparatus capable of compensating for the relative sliding or longitudinal movement of the inner and outer members of the tool in order to allow proper operation or operation of the instrument.

Summary of the Invention The present invention relates to a device or apparatus for mounting or positioning an instrument within a tool, referred to herein as an instrument insert. Further, the present invention relates to an instrument insert for use in a tool of the type comprising an inner member extending within an outer member, wherein the inner member and the outer member are capable of an amount of relative longitudinal movement. The instrument insert permits or provides for mounting the instrument insert within the tool at a radial position at the interface between the inner and outer members. Further, the instrument insert preferably compensates or adjusts, or otherwise counterbalances, any relative longitudinal sliding or movement or alternate movement between the inner and outer members of the tool such that proper operation or operation of the instrument is not significantly affected. or prevented by it. Accordingly, the instrument insert is provided for mounting between the alternate inner and outer members of the tool so that the inner and outer members move longitudinally with respect to one another. In addition, the instrument insert may be provided for mounting between the rotating inner and outer tool members. In the preferred embodiment, the instrument insert is provided for mounting within the tool between the inner and outer limbs, so that the limbs are capable of relative longitudinal or reciprocating movement and relative rotation. Thus, in the preferred embodiment, the instrument insert does not interfere with relative rotation between the limbs, and at the same time compensates for or adjusts any relative longitudinal movement. Although the instrument insert may be used in any type of tool, the apparatus or structure having internal and external members capable of relative longitudinal movement, in the preferred embodiment of the present invention, the instrument insert is provided for use in a hole bottom tool for a drill hole. For example, the tool may comprise a portion of an alternate or rotary production or tube handle. Preferably, the instrument insert is for mounting within a borehole drilling tool between a rotary member, such as an internal rotary shaft, and a non-rotating member, such as an external stationary housing . Preferably, the instrument insert is a "floating" insert in the sense that the instrument insert can move longitudinally within the interface between the inner and outer limbs to counteract or offset any relative longitudinal movement between the internal and external limbs that could disrupt the operation of the instrument associated with the instrument insert. Thus, in the preferred embodiment, the instrument insert is adapted for mounting within the tool in a radial position between the inner member and the outer member such that the instrument insert is capable of longitudinal movement relative to at least one of the two. the inner member and the outer member. In the preferred embodiment of the present invention, the present invention relates to an instrument insert for a borehole drilling tool, including a rotatable inner member extending within a substantially stationary outer member. The instrument insert is adapted for mounting within the tool in a radial position between the inner and outer members such that the instrument insert is capable of relative longitudinal movement in at least one of the rotating inner member and the stationary outer member. . Accordingly, the instrument insert is able to compensate for any relative longitudinal movement as experienced after contraction or expansion of the inner limb bore bottom within the outer limb as a result of bore bottom conditions in the borehole. In one aspect of the present invention, the present invention is comprised of an instrument insert for a tool of the type comprising an inner member extending within an outer member, the inner member and the outer member being capable of a relative longitudinal movement amount, the instrument insert comprising: a first insert portion adapted to be connected to one of the inner member and the outer member, the first insert portion comprising a first instrument component of a instrument; A second insert portion adapted to be connected to one another between the inner member and the outer member, the second insert portion comprising a second instrument component of the instrument; and a coupling mechanism for connecting the first insert portion to the second insert portion and for maintaining the first insert portion and the second insert portion in a fixed relative longitudinal position; Wherein the instrument insert is adapted for mounting within the tool in a radial position between the inner member and the outer member such that the instrument insert is capable of longitudinal movement relative to at least between the inner member and the outer member. Any shape or configuration of the instrument insert may be used which permits proper operation of the instrument associated with the instrument insert and which allows the instrument insert to move longitudinally with respect to at least one of the inner member and the outer member. Preferably, however, the instrument insert is comprised of the first insert portion, the second insert portion, and the coupling mechanism as indicated above. Further, the first insert portion and the second insert portion may be coupled in any manner and by any mechanism capable of, or suitable for, connecting the portions to maintain the first and second portions in a manner. fixed relative longitudinal position. As a result, the first instrument component and the second instrument component comprising the first and second insert portions, respectively, are also held in a fixed relative longitudinal position. In addition, any of the instrument insert components may be adapted for mounting within the tool to allow the desired longitudinal movement with respect to at least one of the inner member and the outer member. However, in the preferred embodiment, at least one of the first insert portion and the second insert portion is adapted to be connected to one of the inner and outer members of the tool to provide relative longitudinal movement. Thus, after any relative longitudinal movement of the inner and outer members of the tool, the first and second insert portions are held in a fixed relative longitudinal position such that the instrument insert moves longitudinally as a unit or as a full member with respect to at least one of the internal and external members. As indicated, with respect to the tool, the inner member extends within the outer member, and the inner member and the outer member are capable of relative alternate or longitudinal movement. In addition, preferably the inner member and the outer member are capable of relative rotation. Thus, the instrument insert is preferably mounted within the tool in a radial position between the inner member and the outer member, wherein the inner and outer members are capable of relative longitudinal movement and relative rotation. The instrument insert can be mounted inside any tool providing the inner and outer limbs. The first insert portion is preferably adapted to connect to one of the inner member and the outer member, while the second insert portion is adapted to connect to the other between the inner member and the member. external. The first and second insert portions may be adapted to connect to the inner and outer limbs in any manner and by any mechanism or structure capable of, and suitable for, allowing desired relative movements between the inner and outer limbs, longitudinally and preferably rotatably while still allowing the coupling mechanism to hold the first and second insert portions in relative longitudinal position. In the preferred embodiment, wherein the inner member and outer member are capable of relative rotation, the first insert portion is adapted to non-rotatably connect to one of the inner member and the outer member. and the second insert portion is adapted to non-rotatably connect to the other between the inner member and the outer member. Further, the coupling mechanism is comprised of at least one bearing such that the relative rotation of the inner member, and the outer member results in the relative rotation of the first insert portion and the second insert portion. Although the coupling mechanism is preferably comprised of at least one bearing, and more preferably two, the coupling mechanism may consist of any device or structure capable of, and suitable for, connecting and maintaining the first and the second insert portions in the fixed relative longitudinal position, while still allowing relative rotation between the first and the second insert portions. Thus, while the first and second instrument components of the instrument comprising the first and second insert portions can rotate with respect to the rotation of the inner and outer tool members, the first and second instrument components are maintained in longitudinal alignment to allow or facilitate proper operation of the instrument. In addition, the first insert portion may be non-rotatably connected to the inner and outer members, while the second insert portion is non-rotatably connected to the insert. another among the internal and external members. However, in the preferred embodiment, the first insert portion is adapted to be non-rotatably connected to the inner member, and the second insert portion is non-rotatably connected to the inner member, and the The second insert portion is adapted to be non-rotatably connected to the outer member. Accordingly, when the inner member rotates within a substantially stationary outer member, the first insert portion rotates with the inner member, while the second insert portion remains substantially stationary with the outer member. Further, as indicated, the instrument insert is adapted for mounting on the tool such that the instrument insert is capable of longitudinal or reciprocating movement with respect to at least one of the inner member and the outer member. Although the instrument insert may be adapted in any way to allow this movement, the first and second insert portions are preferably particularly adapted to allow relative longitudinal movement. More particularly, at least one of the inner insert portion and the outer insert portion is alternatively connected with one of the inner member and the outer member of the tool such that the instrument insert is capable of movement. longitudinal with respect to that limb. In other words, at least one of the inner insert portion and the outer insert portion is connected to one of the inner member and the outer member of the tool to allow longitudinal or alternate movement with respect to that member. In addition, in the preferred embodiment, when the first insert portion is connected to the inner member and the second insert portion is connected to the outer member, the first and second insert portions may both be connected to make one another. alternate movement with the inner and outer limbs respectively. Preferably, however, one of the first insert portion and the second insert portion is alternatively connected to its respective inner or outer member, while the other between the first insert portion and the second insert portion is connected. non-alternative form to its internal or external member respectively. Accordingly, the instrument insert is capable of longitudinal or alternate movement with respect to one of the inner limb and the outer limb only. In the preferred embodiment, the first insert portion is adapted to be non-alternatively connected to the inner member so that the first insert portion moves longitudinally with the inner member and the second insert portion is movable. adapted to be reciprocally connected to the outer member so that the second insert portion moves longitudinally with the first insert portion, whereby the instrument insert is capable of longitudinal movement with respect to to the external member. Thus, in the preferred embodiment, the first insert portion is adapted to be non-rotationally connected and non-alternatively connected to the inner member, and the second insert portion is adapted to be non-rotationally connected. rotating but with alternative movement to the outer limb. Therefore, when the inner member rotates within a substantially stationary outer member, the first insert portion rotates and moves longitudinally as a unit with the inner member, while the second insert portion remains substantially rotatable stationary with the outer member. but can alternate longitudinally with respect to the outer limb. As a result, the instrument insert moves longitudinally as a unit with the inner member relative to the outer member, while the first and second instrument components of the instrument can rotate relative to each other but remain in a relative longitudinal position. fixed. Preferably, the instrument insert further comprises a first connecting mechanism for a non-rotating and non-alternating connection of the first insert portion to the inner member. The first connecting mechanism may comprise any device, mechanism, structure or combination thereof capable of, and suitable for mounting, connecting, securing or otherwise non-alternatively securing the first insert portion to the inner member. Preferably, however, the first insert portion comprises a mounting sleeve, whose mounting sleeve is adapted to engage the inner member. In addition, the first attachment mechanism is coupled to the mounting sleeve to non-rotatably and non-alternatively connect the mounting sleeve to the inner member. In the preferred embodiment, the first connecting mechanism comprises a locking ring or conical lock secured in a circumferential direction around the mounting sleeve to securely connect the mounting sleeve to the inner member. Preferably, the instrument insert further comprises a second connecting mechanism for non-rotating and reciprocatingly connecting the second insert portion to the outer member. The second connecting mechanism may comprise any device, mechanism, structure, or combination thereof capable of, and suitable for mounting, connecting, securing or otherwise non-rotating and reciprocally securing the second insert portion to the member. external. Preferably, however, the second insert portion comprises an external insert housing whose second connection mechanism comprises one of a key and a keyway associated with the external insert housing which is adapted to fit a complementary structure associated with the outer member so as to non-rotatably and reciprocally connect the outer insert housing and the outer member. In the preferred embodiment, a keyway is associated with the outer insert housing to engage a complementary keyway associated with the outer member. The keyway of the outer insert housing is configured and oriented to permit movement of the key therein longitudinally, but not rotationally or circumferentially with respect to the second insert portion. The instrument comprising the first and second components may be any desired mechanism and / or electronic or electrical mechanism, device or apparatus to be mounted within the tool. However, the present invention is particularly applicable where the instrument is of a type which includes a first instrument component and a second instrument component which are preferably held in a relative longitudinal position in order to facilitate or ensure proper operation. which is required or desired to be mounted between the inner and outer members of a tool capable of longitudinal movement with respect to each other. Furthermore, the present invention is particularly applicable when the instrument is required or desired to be mounted between the inner and outer members of a tool capable of both longitudinal movement and relative rotation with respect to one another. In one embodiment, the instrument comprises a rotation sensor apparatus for sensing the relative rotation of the inner and outer limbs. In this embodiment, the first instrument component comprises at least one magnet, the second instrument component comprises a magnetic sensor for sensing the proximity of the magnet to the magnetic sensor, and to which the first insert portion and the second insert portion are connected. such that the magnetic sensor is capable of sensing the proximity of the magnet to the magnetic sensor. In another embodiment, the instrument comprises a slip ring assembly for the transmission of electricity between the inner member and the outer member. In this application, reference to "electricity" or an "electrical signal" includes the transmission or provision of signals incorporating data communications and power. In this other embodiment, the first instrument component comprises a slip ring, wherein the second instrument component comprises an electrical contact assembly to provide electrical contact with the slip ring, and in which the first insert portion and the second insert portion are connected such that the slip ring engages the electrical contact assembly. In other words, "electrical contact" allows the transmission or communication of electricity or an electrical signal between components. In addition, the first insert portion and the second insert portion of the instrument insert comprise a first instrument component and a second instrument component, respectively, of an instrument, such as the rotation sensing apparatus. and slip ring assembly. Thus, while the instrument insert comprises at least one instrument, it may further comprise a plurality of instruments. In other words, the first insert portion may be comprised of a plurality of first instrument components of a plurality of instruments and the second insert portion may be comprised of a plurality of second instrument components of the plurality of instruments. Preferably, each of the plurality of instruments is comprised of a first instrument component and a second compatible instrument component. Thus, for example, in the preferred embodiment, the instrument insert consists of two instruments, a first instrument consisting of the rotation sensing apparatus and a second instrument consisting of the slip ring assembly. Finally, in order to facilitate or refine the proper operation or operation of the instrument insert instrument or instruments, any fluid passing within the instrument insert is preferably filtered to restrict the passage of any debris or other matter. deleterious to the instrument insert of the instrument. Therefore, the instrument insert preferably comprises a filtering mechanism. In the preferred embodiment, the second insert portion further comprises an external insert housing, wherein the external insert housing comprises a filter mechanism for filtering a fluid as fluid passes from an exterior of the external insert housing to an interior of the outer insert housing. However, any suitable type, configuration or structure of filtering mechanism capable of filtering the fluid may be used.

Summary of the Drawings Embodiments of the present invention will now be described with reference to the accompanying drawings, in which: Figure 1 is a longitudinal sectional view of a preferred embodiment of an instrument insert mounted within an internal member. and an external member of a tool; Figure 2 is a more detailed portion of the longitudinal section view of the instrument insert within the tool as shown in Figure 1; Figure 3 is an end view of the instrument insert and a portion of the outer member of the tool shown in Figure 1; Figure 4 is a longitudinal sectional view of the instrument insert and portion of the outer tool member taken along line 4-4 of Figure 3; [0052] Figure 5 is a longitudinal sectional view of the instrument insert and the portion of the outer tool member taken along line 5-5 of Figure 3; [0053] Figure 6 is a longitudinal sectional view of the instrument insert and portion of the outer tool member taken along line 6-6 of Figure 3; [0054] Figure 7 is a longitudinal section view of the isolation instrument insert taken along line 7-7 of Figure 3; and Figure 8 is a perspective view of the instrument insert in isolation as shown in Figure 7.

Detailed Description With reference to Figures 1 and 2, the present invention is an instrument insert (20) for a tool (22), whose instrument insert (20) is associated with or constituted by an instrument (21). as described herein.  The instrument insert (20) is particularly for use in a tool (22) of the type comprising an inner member (24) extending within an outer member (26), whose inner member (24) and outer member (26). ) are capable of a relative longitudinal motion amount.  Longitudinal motion or alternative motion is movement towards the longitudinal axes of the inner and outer limbs (24, 26).  Furthermore, although not required, in the preferred embodiment, the inner member 24 and the outer member 26 are also capable of relative rotation.  The instrument insert (20) may be used on any tool (22) of the type described.  However, the instrument insert (20) is preferably used in a hole bottom tool for insertion into a probe hole.  More particularly, the hole bottom tool is preferably a hole bottom drilling tool.  Specifically, the tool preferably incorporates or comprises a portion or section of a tube cable that extends from the surface into the probe bore.  Preferably, the tool (22) is incorporated into or comprises a portion or section or all of a drilling direction control device for orienting a drilling system in a hole bottom, such as a rotary drilling system.  In the described embodiment, the tool 22 comprises the drilling direction control device described in United States Patent No. 6. 244 361, issued June 12, 2001, from Comeau et al.  The drilling direction control device, and thus the tool (22), comprises a rotary shaft (28) connectable to the pipe cable and a housing (30) for rotatably supporting a shaft length (28). ) for rotation in it.  A portion of the tool (22) having the instrument insert (20) mounted thereon is shown in Figures 1 and 2.  Thus, in the preferred embodiment, the inner member (24) comprises the rotary axis (28) while the outer member (26) comprises the housing (30).  In order to allow or facilitate relative rotation between the inner and outer members (24, 26) comprising the rotary axis (28) and the housing (30), respectively, the outer member (26) may be associated with a device. (not shown) so as to restrict the rotation of the outer member (26) to the rotation of the inner member (24), such as during the drilling operation.  Preferably, the outer member 26 is rotatably restrained or restricted in a substantially stationary position.  Referring to Figures 1 and 2, the inner member (24) extends into the outer member (26).  The inner member (24) of the tool (22) may comprise a single element or component or may comprise a plurality of connected, attached or otherwise fixedly connected elements, sections or components to form the inner member (24). .  In the preferred embodiment, the inner member (24) comprises an elongate member, such as the rotary axis (28), having a circumferential or perimeter surface (32) and defining a longitudinal geometrical axis (34) extending. through them.  Similarly, the outer member (26) of the tool (22) may comprise a single element or component or may comprise a plurality of elements, sections or components connected, attached or otherwise fixedly joined to one another. forming the outer member (26).  In the preferred embodiment, the outer member (26) is comprised of a plurality of elements or sections fixedly or rigidly connected or fixed together to move as a unit.  In particular, the outer member (26) comprises an elongated substantially tubular or cylindrical housing member (35) such as housing (30) having a hole (36) defining an inner circumferential or perimeter surface ( 38) in it.  Furthermore, the outer member (26) further comprises at least one housing insert (40) contained within the hole (36) of the housing member (35) and fixedly and non-rotatably connected to the housing member (35).  The housing insert (40) comprises a substantially tubular or cylindrical elongate member having an outer circumferential or perimeter surface (42) fixed, mounted or secured to the inner surface (38) of the housing member (35).  In addition, the housing insert 40 has a hole 44 defining an inner circumferential or perimeter surface 46 therein.  The housing member (35) and housing insert (40) together define a longitudinal geometrical axis (48) of the outer member (26) extending therethrough.  Preferably, the longitudinal axis (34) of the inner member (24) is coincident with or concurrent with the longitudinal axis (48) of the outer member (26).  A reference to longitudinal motion here refers to movement along or in the direction of the longitudinal axes (34, 48).  Further, the inner member (24) extends inwardly and is supported by the outer member (26) such that an amount of relative longitudinal movement is possible therebetween.  Moreover, in the preferred embodiment, the inner member 24 is supported by the outer member 26 such that the inner member 24 and the outer member 26 are capable of relative rotational movement about their axes. longitudinal sections (34,48).  Any mechanism, apparatus, device or structure capable of rotatably supporting the inner member (24) within the outer member (26) in the manner described may be used.  For example, one or more radial bearings (50) may be provided between the inner and outer members (24, 26) to rotatably support and center the inner member (24) within the outer member (26).  Finally, the inner member (24) is supported within the outer member (26) such that a radial space or opening (52) is provided between the inner and outer members (24, 26) to position the instrument insert (20) therein.  Preferably, the radial space (52) is provided between the outer surface (32) of the inner member (24) and the inner surface (40) of the housing insert (40) comprising the outer member (26).  As indicated, the instrument insert (20) is mounted within the tool (22) in a radial position, preferably within the radial space (52), between the inner and outer members (24, 26).  Referring to Figures 1 to 8, the instrument insert (20) comprises a first insert portion (54), a second insert portion (56) and a coupling mechanism (58).  The first insert portion (54) is adapted to be connected to one of the inner member (24) and the outer member (26) of the tool (22), while the second insert portion (56) is adapted to fit. to be connected to one another between the inner limb (24) and the outer limb (26).  In the preferred embodiment, the first insert portion (54) is adapted to be connected to the inner member (24).  The first insert portion 54 may have any compatible shape or configuration for connecting to the inner member 24 in the desired manner as described herein.  Preferably, however, the first insert portion (54) is substantially tubular or cylindrical, defining a circumferential inner surface (60), an opposing outer surface (62) and opposite first and second ends (64, 66).  The inner surface (60) of the first insert portion (54) is preferably sized to receive the inner member (24) of the tool (22) therein.  In addition, the inner surface (60) of the first insert portion (54) is preferably particularly adapted to be connected to the adjacent outer circumferential surface (32) of the inner member (24).  Furthermore, in the preferred embodiment, the second insert portion (56) is adapted to be connected to the outer member (26).  The second insert portion 56 may have any compatible shape or configuration for connecting to the outer member 26 in the desired manner as described herein.  Preferably, however, the second insert portion (56) is also substantially tubular or cylindrical defining an inner surface (68), a circumferential outer surface (70) and opposite first and second ends (72, 74).  The second insert portion (56) is sized or configured to receive at least a portion of the first insert portion (54) therein.  Furthermore, the second insert portion (56) is preferably sized or configured for receiving within the outer member (26), particularly the housing insert (40).  Thus, the outer surface (70) of the second insert portion (56) is preferably particularly adapted to be connected to the adjacent inner surface (46) of the housing insert (40) comprising the outer member (26). ).  As indicated, the instrument insert (20) is adapted for mounting within the radial space (52) such that the instrument insert (20) is capable of longitudinal movement with respect to at least one of them. the inner member (24) and the outer member (26).  Thus, one of the first insert portion (54) and the second insert portion (56) is capable of longitudinal movement with respect to at least one of the inner member (24) and the outer member (26). .  In the preferred embodiment, the instrument insert (20) is adapted for mounting such that the instrument insert (20) is capable of longitudinal movement with respect to the outer member (26) alone.  Thus, the first insert portion (54) is adapted to be non-alternatively connected to the inner member (24) such that the first insert portion (54) moves longitudinally, or makes an alternative movement. along the longitudinal geometrical axis (34) with the inner member (24).  In addition, the second insert portion (56) is adapted to be alternatively connected to the outer member (26) so that the second insert portion (56) moves in a longitudinal direction or alternates with one another. the first insert portion (54) as a result of the coupling mechanism (58) holding the first insert portion (54) and the second insert portion (56) in a fixed relative longitudinal position.  In other words, the second insert portion (56) moves longitudinally or alternates along the longitudinal geometrical axis (48) relative to the outer member (26).  More particularly, in the preferred embodiment, the inner surface (60) of the first insert portion (54) is adapted to be non-alternatively connected to the adjacent outer surface (32) of the inner member (24). while the outer surface (70) of the second insert portion (56) is adapted to be alternatively connected to the adjacent inner surface (46) of the housing insert (40).  In other words, the first insert portion 54 is connected to the inner member 24 in a manner that inhibits or prevents any relative longitudinal or alternate movement therebetween, while the second insert portion 56 is connected to the insert. housing (40) in such a way as to allow a relative or alternate longitudinal movement amount therebetween.  Furthermore, in the preferred embodiment, the inner and outer members (24, 26) of the tool (22) are capable of relative rotation.  Further, each of the first insert portion (54) and the second insert portion (56) is further adapted to be non-rotatably connected to one of the inner member (24) and the outer member (26). .  Thus, in the preferred embodiment, the inner surface (60) of the first insert portion (54) is adapted to be non-alternatively and non-rotatably connected to the adjacent outer surface (32) of the inner member (24). while the outer surface (70) of the second insert portion (56) is adapted to be alternatively and non-rotatably connected to the adjacent inner surface (46) of the housing insert (40).  The first insert portion (54) may be adapted to non-rotatably and non-alternatively connect to the inner member (24) in any manner or by any restrictive mechanism, device or structure. or preventing any relative rotation or longitudinal movement between the first insert portion (54) and the inner member (24).  Referring to Figures 1, 2 and 4 to 6, in the preferred embodiment, the instrument insert (20) further comprises one of a first connector mechanism (76) for a non-rotary and non-alternative connection to the first insert portion. (54) and the internal member (24).  More particularly, the first connecting mechanism (76) connects, secures, secures or otherwise securely or rigidly or permanently or removably or directly or indirectly the inner surface (60) of the first insert portion. (54) to the outer surface (32) of the inner member (24).  The first insert portion 54 may comprise one of a single member, component or element providing an integral unit.  Preferably, however, the first insert portion (54) comprises one of a plurality of connected members, components or elements attached to or otherwise retained to define the first insert portion (54).  For example, in the preferred embodiment, the first insert portion (54) comprises one of an inner mounting sleeve (78) and an outer sleeve (79).  The inner mounting sleeve (78) comprises or defines the inner surface (60) of the first insert portion (54) and extends between the first and second ends (64, 66).  The mounting sleeve (78) has a tubular configuration or structure and is adapted to surround the inner member (24) such that the inner member (24) can enter it.  The outer sleeve (79) comprises or defines at least a portion of the outer surface (62) of the first insert portion (54) and also has a tubular configuration or structure such that it is adapted to surround a portion of the mounting sleeve ( 78) between the first and second ends (64, 66).  Referring particularly to Figure 7, in the preferred embodiment, the outer sleeve 79 is provided for carrying or retaining various components or elements of the first insert portion 54 as shown below.  The outer sleeve (79) may be retained at a desired position or location relative to the mounting sleeve (78) by means of a retaining frame or device.  Preferably, however, the outer sleeve (79) is held in position over the mounting sleeve (78) between a shoulder (80) defined by the mounting sleeve (78) and a retaining ring (82) extending over it. the mounting sleeve (78).  One or more spacers (84) may also be used as desired or required in order to obtain or retain the desired positioning of the outer sleeve (79) over the mounting sleeve (78).  In other words, the outer sleeve (79) is juxtaposed between the shoulder (80) of the mounting sleeve (78) and the retaining ring (82) with one or more spacers (84) as required.  In addition, the first insert portion (54) and the second insert portion (56) are held in a fixed relative longitudinal position by means of the coupling mechanism (58).  While the first insert portion (54) and the second insert portion (56) may be held in any relative fixed positions with respect to each other, the second insert portion (56) is preferably fixed over all or part of the first insert. insert portion (54) such that at least a portion of the outer surface (62) of the first insert portion (54) is opposite or adjacent to at least a portion of the internal surface (68) of the second insert portion (56). ).  In the preferred embodiment, the second insert portion (56) is fixed in a position around the first insert portion (54) such that the first and second ends (64, 66) of the first insert portion (54) extend from the first and second end (72, 74) of the second insert portion (56), respectively.  Specifically, the mounting sleeve (78) defining the first and second end (64, 66) of the first insert portion (54) extends from the first and second end (72, 74) of the second insert. insert portion (56).  The first connecting mechanism (76) is preferably associated with the mounting sleeve (78) for a non-rotating and non-alternating connection of the mounting sleeve (78) to the inner member (24).  The first connection mechanism (76) may be associated with the mounting sleeve (78) at any position or location along its length between the first and second ends (64, 66) of the first insert portion (54). .  Preferably, however, the first connection mechanism (76) is associated with the mounting sleeve (78) at one of the first and second ends (64, 66) of the first insert portion (54).  In the preferred embodiment, the first connection mechanism (76) is associated with the first end mounting sleeve (78) in which the first mounting sleeve (78) extends from the first end (72) of the second end portion. insert (56).  In addition, as indicated above, at least one radial bearing (50) may be provided between the inner and outer members (24, 26) for the rotating support and centering of the inner member (24) within the outer member (26). ) as shown in Figures 2 and 4 to 6.  In the preferred embodiment, the second end (66) of the first insert portion (54) of the mounting sleeve (78) extends from the second end (66) of the first insert portion (54) of the mounting sleeve (78). 78) extends from the second end (74) of the second insert portion (56) to a position adjacent to the housing insert (40) comprising the outer member (26).  In other words, the mounting sleeve (78) at the second end (66) of the first insert portion (54) positions or locates between the outer surface (32) of the inner member (24) and the inner surface (46). ) of the housing insert (40).  Since the mounting sleeve (78) is secured with the inner member (24), the mounting sleeve (78) rotates with respect to the housing insert (40).  As a result, in the preferred embodiment, at least one radial bearing (50) is positioned between the mounting sleeve (78), the second end (66) of the first insert portion (54), and the adjacent inner surface ( 46) of the housing insert (40).  The radial bearing (50) may be held in the desired position between the mounting sleeve (78) and the housing insert (40) by any mechanism or structure.  However, in the preferred embodiment, the radial bearing (50) is juxtaposed to a shoulder (86) defined by the inner surface (46) of the housing insert (40).  Specifically, the radial bearing (50) is held between the shoulder (86) and a retaining ring (88) mounted on and extending from the inner surface (46) of the housing insert (40).  Finally, in order to keep the bearing (50) in the desired position after longitudinal movement of the inner member (24), the bearing (50) is pushed out of the retaining ring (88) and for shoulder juxtaposition (86) by means of a polarizing mechanism or device, such as a spring (90).  In the preferred embodiment, spring 90 comprises at least one curled spring.  Preferably, the first connecting mechanism (76) comprises any mechanism, device or structure capable of connecting, securing or otherwise securely or fixedly securing the mounting sleeve (78) around the inner member (24). ).  Referring to Figures 1, 2 and 4 to 6, in the preferred embodiment, the first connecting mechanism (76) comprises a conical lock (92), also referred to as a lock ring.  In the preferred embodiment, the conical lock (92) comprises a three-piece conical lock for securing or tightening the mounting sleeve (78) over the inner member (24).  The conical lock (92) comprises a circumferential inner ring (94) mounted on the mounting sleeve (78) at, adjacent to or in proximity to the first end (64) of the first insert portion (54).  Although the inner ring (94) may be mounted anyway, preferably the inner ring (94) is mounted by a plurality of screws or bolts (96) extending between the inner ring (94) and the sleeve. (78) and spaced around the circumference of the inner ring (94).  In addition, the inner ring 94 has an upper surface 98 which defines two inclined or tapered portions 100 with each inclination or taper in an outward direction from a center of the upper surface 98 in an internal direction towards the mounting sleeve (78) as shown in the Figures.  The conical lock (92) further comprises two opposite circumferential outer rings (102) surrounding the inner ring (94).  Each outer ring (102) has a lower surface (104) which defines a compatible slope or taper for engagement with one of the tapered portions (100) of the upper surface (98) of the inner ring (94).  When the outer rings (102) are mounted in position around the inner ring (94), the screws (96) that mount the inner ring (94) to the mounting sleeve (78) are positioned between the outer rings (102).  In addition, the tapered portions (100) of the upper surface (98) of the inner ring (94) engage the tapered lower surfaces (104) of the outer rings (102).  Finally, a plurality of screws or dowels (106) extend between opposing outer rings (102). Tightening of the screws (100) drags the outer rings (102) closer together, moving the bottom surface (104). ) of each outer ring (102) along the tapered portions (100) of the inner ring (94) so that the mounting sleeve (78) more tightly and securely engages the inner member (24).  [0082] The second insert portion (56) may be adapted to non-rotatably and non-alternatively connect to the outer member (26) in any manner or by any restrictive mechanism, device or structure. or prevent any relative rotation, while allowing a longitudinal amount of movement between the second insert portion (56) and the outer member (26). In the preferred embodiment, the instrument insert (20) further comprises a second mechanism. (108) for a non-rotating and alternative connection to the second insert portion (56) and to the outer member (26).  More particularly, the second connecting mechanism (108) connects, secures, fastens or otherwise mounts in the desired manner, permanently or removably or even directly or indirectly, the inner surface (70) of the second insert portion (56). with the inner surface (46) to the outer member (26), particularly the housing insert (40).  The second insert portion 56 may comprise a single member, component or element, providing an integral unit or a plurality of connected, interlocked or otherwise retained members, components or elements to define the second. insert portion (56).  In the preferred embodiment, the second insert portion (56) comprises an external insert housing (110).  Preferably, the outer insert housing (110) comprises or defines the inner and outer surfaces (68, 70) of the second insert portion (56) and extends between the first and second end (72, 74).  The external insert housing (110) preferably has a tubular configuration or structure and is adapted to surround the first insert portion (54) between the first and second ends (64, 66) thereof as shown in FIG. such that the first insert portion (54) extends through the insert housing (110).  In the preferred embodiment, the external insert housing (110) may be retained in a desired position or location relative to the first insert portion (54) by any retaining structure or device.  Preferably, however, the outer insert housing (110) is held in position around the first insert portion (54) by means of the coupling mechanism (58) as described in detail below.  Referring to Figures 1, 2 and 4, the second connecting mechanism (108) is preferably associated with the interface between the outer insert housing (110) defining the outer surface (70) of the second portion of the connector. insert (56), and housing insert (40) defining the inner surface (46) of the outer member (26).  Specifically, the second connection mechanism (108) comprises complementary or compatible structures on each of the adjacent surfaces of the outer insert housing (110) and the housing insert (40) for a non-rotating and alternative connection to the housing. external insert (108) to the housing insert (40).  Any complementary or compatible structures capable of providing the non-rotary, desired alternative connection may be used, such as, for example, complementary longitudinally oriented ribs and slots or complementary keyway and keyway structures.  The second connection mechanism (108) may be associated with the external insert housing (110) at any position or location along its length between the first and second ends (72, 74) of the second insert portion ( 56).  Preferably, however, the second connection mechanism (108) is associated with the outer insert housing (110) at approximately an intermediate point or approximately at the center of the first and second end (72, 74).  Referring to Figures 1, 2 and 4, preferably the second connecting mechanism (108) comprises one of a key and a keyway associated with the external insert housing (110) adapted to fit a frame. associated with the outer member (26), particularly the housing insert (40), for a non-rotating and alternative connection of the outer insert housing (110) to the outer member (26).  In the preferred embodiment, at least one longitudinally oriented elongate keyway (112) being a groove or slot is defined by the outer surface (70) of the outer insert housing (110) of the second insert portion ( 56).  Each keyway (112) is provided to receive at least one complementary keyway (114) therein.  Each key (114) is mounted or secured to and extends from the inner surface (46) of the housing insert (40).  In the preferred embodiment, two keys (114) extend from the housing insert (40) to receive a single keyway (112) defined by the external insert housing (110).  However, any number of keyways (112) and complementary keys (114) may be used as desired or required for a particular application.  Furthermore, in the preferred embodiment, each key (114) is particularly constituted of a head screw having an end extending from the housing insert (40) to act as or provide the key structure (114).  In addition, a device or structure may be further provided at the interface between the outer insert housing (110) and the housing insert (40) to facilitate longitudinal movement between the instrument insert (20) and the housing. outer member (26) and in order to assist in centering the instrument insert (20) within the outer member (26).  In the preferred embodiment, at least one circumferential slide knob or slip ring (116) is mounted with at least one groove (118) defined by the outer surface (70) of the outer insert housing (110) to engage the adjacent surface of the housing insert (40).  When the first insert portion (54) and the second insert portion (56) are coupled to form the instrument insert (20) and the instrument insert (20) is positioned within the radial space (52). ) provided between the inner and outer members (24, 26) of the tool (22), the other tool components (22) must be positioned within the tool (22) adjacent to the instrument insert (20) in such a way as to permit any necessary or required longitudinal movement of the instrument insert (20) as a result of the relative longitudinal movement of the inner and outer limbs (24, 26).  Thus, the radial space (52) provided for the instrument insert (20) is of sufficient length to accommodate the instrument insert (20) and accommodate any required or required longitudinal movement of the instrument insert (20).  More particularly, with reference to Figures 2 and 4 to 6, an axial or longitudinal opening (120) is provided in the radial space (52) between the instrument insert (20) and the other tool components (22) located. or positioned longitudinally at both ends of the instrument insert (20).  The total amount or length of the longitudinal opening (120) determines the amount of longitudinal movement or passage allowed by the instrument insert (20) with respect to the outer member (26).  The total amount or length of the longitudinal aperture (120) is equal to the combined quantities or lengths of the longitudinal apertures at both ends of the instrument insert (20).  For example, in the preferred embodiment, when mounting the instrument insert (20) into the tool (22), the instrument insert (20) is preferably centered within the radial space (52) to approximately equal amount or portions of the longitudinal opening (120) present on either side of the instrument insert (20).  Thus, a portion of the full aperture (120) is present on both sides of the instrument insert (20) to allow the desired longitudinal movement of the instrument insert (20) relative to the outer member (26) on both sides. directions.  In other words, the amount or length of the total longitudinal opening (120) is selected depending on the desired amount of passage of the instrument insert (20) longitudinally with respect to the outer limb (26).  In particular, the axial or longitudinal opening (120) comprises a first portion (122) and a second portion (124).  The combination of the first portion (122) and the second portion (124) provide the total longitudinal opening (120) or available passage amount of the instrument insert (20) within the radial space (52).  Referring to Figure 2, in the preferred embodiment, the first portion (122) of the longitudinal aperture (120) is located or positioned between the first end (72) of the second insert portion (56) and the adjacent tool member (22). ), being a spacer kit (126), including one or more spacers, shims and / or springs, for an adjacent intermediate or tubular level member (128).  The second portion (124) of the longitudinal opening (120) is located or positioned between the second end (74) of the second insert portion (56) and the adjacent tool member (22), one end of the housing insert ( 40) comprising the outer member (26).  In addition, in order to filter any fluid passing into the instrument insert (20) from outside the instrument insert (20), the instrument insert (20) preferably further comprises a mechanism. 130, as shown particularly in Figures 4 and 5.  The filter mechanism (130) preferably inhibits or prevents the passage of any debris or deleterious material such as particles or metal chips from the tool (22) to the instrument insert (20) which may interfere with proper operation or the operation of the instrument (21) associated therewith, as described in more detail below.  The filter mechanism (130) may comprise any device or mechanism capable of filtering the surrounding tool fluid (22) for passage within the instrument insert (20).  In addition, the filter mechanism (130) may be associated with any part or element comprising the instrument insert (20).  Preferably, the external insert housing (110) comprises the filter mechanism (130) for filtering a fluid as it passes from an exterior of the external insert housing (110), which is outside the instrument insert (20), to a inside the outer insert housing (110) which is within the instrument insert (20).  In the preferred embodiment, the filter mechanism (130) comprises a fluid channel (132) defined by the outer insert housing (110) and extending from the interior of the outer insert housing (110) to the second end (74) of the housing. second insert portion (56) to communicate with the outside of the external insert housing (110).  In addition, the filter mechanism (130) comprises a filter material or sieve (134) disposed within the fluid channel (122) adjacent the second end of the second insert portion (56).  As previously indicated, the instrument insert (20) further comprises or is associated with an instrument (21).  Specifically, the structure of the instrument insert (20) allows the associated instrument components (21) to be held in a fixed relative longitudinal position while the inner and outer members (24, 26) of the tool (22) are able to rotate and make an alternate movement relative to each other.  Thus, the instrument insert (20) facilitates proper operation and operation of the instrument (21) associated with or comprising the instrument insert (20).  Referring to Figures 3 to 8, preferably the first insert portion (54) comprises a first instrument component (136) of the instrument (21).  Furthermore, the second insert portion 56 comprises the second instrument component 138 of the instrument 21.  In other words, the instrument (21) comprises the first instrument component (136) and the second instrument component (138).  The coupling mechanism (58) connects the first insert portion (54) to the second insert portion (56) and holds the first and second insert portions (54, 56) in a relative longitudinal position.  Accordingly, the first instrument component 136 and the second instrument component 138 are also held in a fixed relative longitudinal position.  The first insert portion (54) comprised of the first instrument component (136), and the second insert portion (56) constituted by the second instrument component (138) are held in a fixed relative longitudinal position by means of the coupling mechanism (58).  Although the first insert portion (54) and the second insert portion (56) may be held in any fixed position relative to each other, the second insert portion (56) is preferably fixed over all or part of it. of the first insert portion (54) such that at least a portion of the outer surface (62) of the first insert portion (54) is opposite or adjacent to at least a portion of the inner surface (68) of the second insert portion (56).  In addition, the second insert portion (56) is preferably fixed over the first insert portion (54) in a position such that the second instrument component (138) is opposed to the first instrument component (136). ).  In the preferred embodiment, the second insert portion (56) is fixed in a position around the first insert portion (54) such that the first and second end (64, 66) of the first insert portion extend from the first and second ends (72, 74) of the second insert portion (56), respectively.  Specifically, the mounting sleeve (78) defining the first and second end (64, 66) of the first insert portion (54) extends from the first and second end (72, 74) of the second insert portion. insert (56).  Further, the second insert portion (56) is fixed in a position around the first insert portion (54) such that the second instrument portion (138) and the first instrument portion (138) are opposite each other. the other to enable the operation of the instrument (21) consisting of the components (136,138).  The coupling mechanism (58) may be comprised of any device, apparatus, members or elements capable of, and suitable for, connecting the first and second insert portions (56, 58) and holding them in one position. fixed relative longitudinal  Preferably, the coupling mechanism (58) performs this function while still allowing relative rotation of the first and second insert portions (54, 56) as a result of relative rotation of the inner and outer members (24, 26) of the tool (22). ).  Thus, the coupling mechanism (58) preferably comprises at least one bearing such that the relative rotation of the inner member (24) and the outer member (26) results in a relative rotation of the first insert portion (54) and the second insert portion (56), and thus in a relative rotation of the first instrument component (136) and the second instrument component (138).  In the preferred embodiment, the coupling mechanism (58) comprises a first coupling bearing (140) and a second coupling bearing (142).  Each of the coupling bearings (140, 142) is preferably at least one radial bearing.  However, in the preferred embodiment, each of the coupling bearings (140, 142) is a radial bearing and a thrust bearing.  More particularly, each of the coupling bearings (140, 142) comprises a four-point contact ball bearing.  Coupling bearings (140, 142) may be positioned anywhere between the first and second insert portion (54, 56), which does not interfere with the first and second instrument component (136, 138).  Preferably, however, the coupling bearings (140, 142) are positioned at a spaced distance in order to increase the stability of the instrument insert (20).  In the preferred embodiment, the first coupling bearing (140) is positioned adjacent to or in proximity to the first end (72) of the second insert portion (56) while the second coupling bearing (142) is positioned adjacent to or in proximity to the second end (74) of the second insert portion (56).  In addition, any mechanism, device or structure may be used to hold each of the first and second coupling bearings (140, 142) in the desired positions between the first and second insert portions (54, 56).  In the preferred embodiment, the first coupling bearing (140) is positioned adjacent the first end (72) of the second insert portion (56) between the inner surface (68) of the second insert portion (56) comprised of the housing. outer insert (110) and the outer surface (62) of the first insert portion (54) comprised of the outer sleeve (79).  More particularly, the first coupling bearing (140) is secured in the desired position by at least one retaining ring (144).  Specifically, each of the outer insert housing (110) and the outer sleeve (79) defines a complementary opposite bearing shoulder (146) for engagement and juxtaposition to the first coupling bearing (140).  The first coupling bearing (140) remains in or juxtaposed with opposing bearing shoulders (146) by one or more retaining rings (144) extending from one or both of the inner surface (68) of the insert housing (110) and the outer surface (62) of the outer sleeve (79).  In addition, if required, one or more spacers (148) may be positioned between the first coupling sleeve (140) and the retaining rings (144) to provide a tight or secure engagement of the first coupling sleeve (140). with the shoulders of a bearing (146).  In the preferred embodiment, with particular reference to Figure 7, the second coupling bearing (142) is closer to the second end (74) than the first end (72) of the second insert portion (56) between the inner surface (68) of the second insert portion (56) comprised of the outer insert housing (110) and the outer surface (62) of the first insert portion (54) of the mounting sleeve (78).  More particularly, the second coupling bearing (142) rests within a bearing carrier (150) positioned between the second coupling bearing (142) and the mounting sleeve (78).  In addition, the outer insert housing (110) defines a bearing shoulder (152) for engagement or juxtaposition with the second coupling bearing (142).  Specifically, the second coupling bearing (142) is locked in the desired position between and in engagement with each other between the bearing shoulder (152) and the bearing carrier (150).  Further, in order to increase or facilitate engagement of the second coupling bearing (142) with each between the bearing shoulder (152) and the bearing carrier (150), the bearing carrier (150) is preferably driven to the second coupling bearing (142) by means of a spray mechanism or device, such as a spring (154).  In the preferred embodiment, spring 154 comprises at least one wavy spring.  Preferably, the outer insert housing (110) further defines a spring shoulder (156) such that the spring (154) may be positioned between the spring shoulder (156) and the bearing carrier (150). .  Finally, if required, one or more spacers (158) may be associated with the spring (154) and positioned between the spring shoulder (156) and the bearing carrier (150) to enhance or facilitate the action of the spring (154). ).  Alternatively, the second coupling bearing (142) with or without the bearing carrier (150) may be secured in the desired position by one or more retaining rings.  [00103] The instrument insert (20) comprises the first instrument component (136) and the second instrument component (138) for at least one instrument (21).  However, the instrument insert (20) may include a plurality of first and second instrument components (136, 138) for a plurality of instruments (21).  In the preferred embodiment, the instrument insert (20) comprises a first instrument component (136) and a second instrument component (138) for each of the two instruments (21).  [00104] The instrument insert (20) may be any type of first and second instrument component (136, 138) for any desired instrument type (21) to be mounted within the particular tool (22).  However, the instrument insert (20) is particularly configured for use with an instrument (21) wherein it is desirable for proper operation and operation of the instrument (21) in order to maintain the first and second instrument components ( 136, 138) in a fixed relative longitudinal position and at the same time allow a relative longitudinal amount of movement between the inner and outer members (24, 26) of the tool (22), and preferably allow relative rotation between the inner and outer members. external (24, 26).  Accordingly, the instrument (21) may be of any type in which it is desirable to mount the first and second instrument components (136, 138) within the tool (22) and at the same time maintain the first and second instrument components. instrument (136, 138) in a fixed relative longitudinal position.  In the preferred embodiment, the instrument (21) is of any type in which it is desirable to allow relative rotation between the first and second instrument components (136, 138) and at the same time to maintain the first and second instrument components ( 136, 138) in a fixed relative longitudinal position.  For example, the instrument (21) may comprise a slip ring assembly (160) for the transmission of electricity or an electrical signal comprised of data and / or power communications between the inner member (24) and the outer member (26).  Thus, the instrument insert (20) comprised of the slip ring assembly (160) provides the ability to transfer or transmit force or data, such as instructions or information, between the inner and outer members (24, 26). of the tool (22).  In addition, the instrument (21) may comprise a rotation sensing apparatus (162) for sensing the relative rotation of the inner limb (24) and the outer limb (26).  In the preferred embodiment, two instruments (21) are associated with the instrument insert (20), in which one instrument (21) consists of the slip ring assembly (160) and the other instrument (21) consists of the rotation sensor apparatus. (162).  Preferably, the ability of the instrument (21) to perform its particular function is not substantially or significantly affected or impaired by any relative longitudinal movement between the inner and outer members (24, 26) of the tool (22) in such a way. that can be experienced by stress and compression borehole tools as a result of various probe bore conditions including vibration, temperature changes and pressure changes and the operation of the tool (22) including the weight on a drill bit. drilling tool.  The instrument insert (20) is provided to accommodate or compensate for relative longitudinal movement between the inner and outer members (24, 26) while maintaining the first and second components (136, 138) of each instrument (21). ) and a fixed relative longitudinal position, thereby facilitating its proper operation and operation.  The instrument insert (20) particularly compensates for movement by flotation as a unit within the radial space (52) between the inner and outer members (24, 26).  In particular, the instrument insert (20) floats, or is capable of longitudinal movement, with respect to at least one of the inner and outer limbs (24, 26).  When the instrument (21) consists of the slip ring assembly (160), the first instrument component (136) is comprised of one of a conductive slip ring (164) and a compatible electrical contact assembly (166) and the second instrument component (138) is comprised of the other of the conductive slip ring (164) and the electrical contact assembly (166).  Preferably, to facilitate maintenance and repair of the slip ring assembly (160), the first instrument component (136) is preferably comprised of the conductive slip ring (164) and the second instrument component (138) is preferably consisting of the compatible electrical contact assembly (166).  Thus, in the preferred embodiment, the slip ring (164) rotates with respect to the electrical contact assembly (166) in the rotation of the first insert portion (54) due to the rotation of the inner member (24) of the tool (22) with respect to to the outer member preferably substantially stationary.  Referring to Figures 3 to 7, the conductive slip ring 164 may comprise any mechanism, device or structure capable of mounting to the first insert portion 54 and suitable for electrical contact with the electrical contact assembly. compatible (166).  Preferably, the slip ring (164) is comprised of a conductive tubular member mounted on the outer surface (62) of the first insert portion (54).  The slip ring (164) may be mounted with the first insert portion (54) in any manner and at any position between the first and second end (64, 64) of the first insert portion (54) allowing the slip ring ( 164) Fits into electrical contact assembly (166).  In the preferred embodiment, the slip ring (164) is mounted on the outer surface (62) of the first insert portion (54) consisting of the outer sleeve (79) and the inner mounting sleeve (78) in a position between the first and second ends (64, 66).  The tubular slip ring (164) has an inner circumferential surface (168) for mounting on the outer surface (62) of the first insert portion (54), an outer circumferential surface (170) for engaging the electrical contact assembly (166) and from the opposite first and second ends (172, 174).  The outer surface (62) of the first insert portion (54) preferably defines a notch (176) for receiving the slip ring (164) therein.  In addition, one end of the notch 176 is defined by a mounting shoulder 178 defined by the outer sleeve 79 of the first insert portion 54 and the other end of the notch 176 is defined by a shoulder (180) defined by the mounting sleeve (78) of the first insert portion (54).  Thus, to keep the slip ring in the desired position, the slip ring (164) is positioned within the notch (176) such that the first end (172) of the slip ring (164) juxtaposes or snaps into place. mounting shoulder (178) of the outer sleeve (79) and such that the second end (174) of the slip ring (164) juxtaposes or fits into the mounting shoulder (180) of the mounting sleeve (78).  In addition, as shown in Figure 5, if desired, one or more adjusting screws (182) extending between the slip ring (164) and the first insert portion (54) may be used to further secure the slip ring (164) in the desired position.  The adjusting screw (182) is positioned such that it does not interfere with the contact between the outer surface (170) of the slip ring (164) and the electrical contact assembly (166).  [00111] The outer surface (170) of the slip ring (164) is configured to engage with the electrical contact assembly (166).  Thus, the outer surface (170) may be of any shape or configuration compatible with the desired electrical contact assembly (166).  However, in the preferred embodiment, the outer surface (170) is comprised of at least one circumferential contact groove (184).  In the preferred embodiment, the outer surface 170 is comprised of four circumferential contact slots 184, however, more or less circumferential contact slots 184 may be used as desired or required to effect the desired electrical contact.  The circumferential contact slots (184) are preferably provided in a substantially parallel arrangement spaced over the outer surface (170) and are provided to engage the electrical contact assembly (166) in order to transmit the electrical signal between the same.  Finally, the electrical signal or electricity to be transmitted by the slip ring assembly (160) may be provided to or transmitted from the slip ring (164) in any manner suitable for conducting electricity.  In the preferred embodiment, the first insert portion (54) defines an electrical conduit (186) therethrough to permit passage of an electrical wire through the electrical conduit (186) for contact with the slip ring (164) as shown. shown in Figure 4.  Referring particularly to Figures 4, 7 and 8, the electrical contact assembly (166) may comprise any mechanism, device or structure capable of being mounted on the second insert portion (56) and suitable for providing a contact. ring with slip ring (164).  Preferably, the electrical contact assembly (166) is comprised of at least one brush block (188) mounted on the second insert portion (56) to oppose the slip ring (164).  As shown below, the brush block (188) comprises at least one, and preferably a plurality of electrical contact brushes or brush wires (190).  The brush block (188) may be mounted to the second insert portion (56) in any manner and at any position between the first and second end (72, 74) of the second insert portion (56), allowing the insert block to brushes (188), and particularly that the electric contact brushes (190) contact or electrically engage the contact slots (184) of the slip ring (164).  In the preferred embodiment, the first insert portion (54) and the second insert portion (56) are connected such that the slip ring (164) engages the electrical contact assembly (166).  In addition, the brush block (188) is particularly mounted on the outer insert housing (110) such that at least a portion of the brush block (188), and particularly the electrical contact brushes (190), are fitted. extend or protrude from the inner surface (68) of the second insert portion (56).  In the preferred embodiment, the brush block (188) has an inner surface (192) to project or extend from the inner surface (68) of the outer insert housing (110), an outer surface (194) and of the opposite first and second ends (196, 198).  Each of the first and second ends (196, 198) of the brush block (188) defines a lip (200) for mounting to the outer insert housing (110) in the manner described below.  The outer insert housing (110) defines at least one opening (202) extending therethrough from the outer surface (70) to the inner surface (68) of the second insert portion (56) for receiving of a brush block (188) therein.  Thus, the opening 202 has a size and configuration compatible with receiving the brush block 188 therein such that the inner surface 192 of the brush block 188 and the electric contact brushes (1) 190) are capable of projecting or extending from the inner surface (68) of the second insert portion (56).  In addition, although the brush block (188) may be mounted within aperture (202) anyway, each of a first side (204) and an opposite second side (206) of aperture (202) preferably defines one. lip (208) compatible with the lip (200) of each end (196, 198) of the brush block (188).  Specifically, the brush block (188) is positioned within the opening (202) such that the lips (200) of the first and second end (196, 198) of the brush block (188) fit together. in the compatible lips (208) of the first and second sides (204, 206) of the opening (200) in the external insert housing (110).  Accordingly, the brush block (188) is suspended in the opening (202) as opposed to the slip ring (164).  In addition, in order to ensure that the lips (200, 208) remain in place, one or more screws (210) may extend through the lips (200, 208).  In the preferred embodiment, four set screws (210) are provided.  Two adjusting screws (210) lock the lips (200, 208) together in the groove of the first end (196) of the brush block (188) and the first side (204) of the opening (202).  Similarly, two adjusting screws (210) lock the lips (200, 208) together in the groove of the second end (198) of the brush block (188) and the second side (206) of the opening (202).  This way of mounting the brush block (188) provides easy access to and removal of the brush block (188) in case of repair or replacement.  The electrical contact brushes (190) are configured to engage or electrical contact with the contact grooves (184) of the slip ring (164).  Thus, the electric contact brushes 190 may be of any shape or configuration compatible with the contact slots 184. However, in the preferred embodiment, four circumferential contact slots 184 are provided.  Accordingly, the brush block (188) comprises at least four electric contact brushes (190) or contact wires for engaging the contact slots (184) in order to transmit an electrical signal therebetween.  However, more or less electrical contact brushes (190) may be provided as needed to provide the desired electrical contact.  Each electrical contact brush (190) is comprised of at least one and preferably a plurality of thin conductive wires having an inner end (212) for engaging or contacting a single contact groove (184) and an opposite outer end. (214).  Each contact brush (190) extends through and is mounted or secured within an opening or passage in the brush block (188) extending between the outer surface (194) and the inner surface (192) of the block. of brushes (188).  The inner end (212) extends particularly from the inner surface (192) of the brush block (188) for engagement with the contact groove (184). The outer end (214) extends from the outer surface (194) of the brush block (188) to provide an electrical contact point for the brush block (188) as shown below.  If desired, the brush block (188) or contact brushes (190) may be spring loaded or otherwise thrust or polarized towards the contact grooves (184) to facilitate electrical contact between the outer ends. (214) of the contact brushes (190) and the contact slots (184).  Finally, the electrical signal or electricity to be transmitted by the slip ring assembly (160) may be provided or transmitted from the electrical contact assembly (166), and particularly the brush block (188) in any suitable manner. for conducting electricity.  In the preferred embodiment, an electric wire is connected to the outer ends (214) of the electric contact brushes (190).  In addition, the second insert portion (56) defines an electrical conduit (216) therethrough to permit passage of the electrical wire through the electrical conduit (216) for connection to the electrical contact brushes (190) as described. and shown in Figure 4.  When the instrument (21) is comprised of the rotation sensor apparatus (162), the first instrument component (136) preferably comprises one of at least one magnet (218) and at least one compatible magnetic sensor (220). and the second instrument component (138) preferably comprises the other of at least one magnet (218) and at least one compatible magnetic sensor (220).  In the preferred embodiment, the first instrument component (136) is comprised of at least one magnet (218) and the second instrument component (138) preferably comprises a compatible magnetic sensor (220).  Thus, in the preferred embodiment, the magnet (218) rotates with respect to the magnetic sensor (220) after rotation of the first insert portion (54) as a result of the rotation of the inner member (24) of the tool (22) with respect to the limb. external, preferably substantially stationary.  With particular reference to Figure 6, one or more magnets (218) may be mounted spaced apart on the circumferential inner surface (60) of the first insert portion (54).  In the preferred embodiment, a plurality of magnets (218) are mounted around the circumference of the outer surface (62) of the first insert portion (54) comprising the mounting sleeve (78) in a position or location within the second portion of the insert. insert (56).  In particular, the magnets (218) are mounted with the mounting sleeve (78) to be positioned adjacent to or in proximity to the second end (74) of the second insert portion (56) comprising the external insert housing ( 110).  Each magnet (218) can be mounted with the mounting sleeve (78) in any way, allowing the magnetic sensor (220) to sense the proximity of the magnet (218).  In addition, any magnet type or configuration (218) capable of mounting within the first insert portion (54) and compatible with the magnetic sensor (220) may be used.  In the preferred embodiment, the magnet (218) is mounted within a notch or cavity (222) defined by the outer surface (62) of the mounting sleeve (78) for each of the magnets (218).  The notch (222) is sized or configured for strict reception of the magnet (218) therein such that the magnet (218) is retained in the notch (222) during use of the rotation sensor apparatus (162).  When required, other retention or retention mechanisms or devices may be used to retain, secure or secure the magnet (218) within the notch (218).  The magnetic sensor (220) may comprise any mechanism, device or structure capable of mounting with the second insert portion (56) and suitable for and capable of sensing the proximity of the magnet (218) to the magnetic sensor (220).  Preferably, the magnetic sensor (220) comprises a position switch assembly used to determine the revolutions per minute of the inner member (24).  Any conventional or known magnet (218) and compatible position switch assembly (220) may comprise the rotation sensing apparatus (162).  Referring to Figures 3 to 7, in the preferred embodiment, the first insert portion (54) and the second insert portion (56) are connected such that the magnetic sensor (220) is capable of sensing proximity. magnet (218) to the magnetic sensor (220).  In addition, the magnetic sensor (220) is mounted with the external insert housing (110) such that the magnetic sensor (220) accesses or communicates with the internal surface (68) of the second insert portion (56).  In addition, the magnetic sensor (220) is positioned at, adjacent to or in proximity to the second end (74) of the second insert portion (56) constituted by the external insert housing (110).  As a result, upon rotation of the mounting sleeve (78) relative to the outer insert housing (110), the magnet (218) mounted within the mounting sleeve (78) moves or rotates in a trajectory that intersects or intersects. the location of the magnetic sensor (220) such that the magnet (218) opposes the magnetic sensor (220) to allow the magnetic sensor (220) to sense the proximity of the magnet (218) to the magnetic sensor (220) .  In the preferred embodiment, the magnetic sensor (220) is mounted within a cavity, hole, or opening (224) defined by the external insert housing (110) for receiving the magnetic sensor (220) therein.  The cavity (224) may extend through the outer insert housing (110) from the outer surface (70) to the inner surface (68) of the second insert portion (56) for receiving the magnetic sensor (220).  In any case, the cavity 224 is particularly sized or configured for strict receipt of the magnetic sensor 220 therein such that the magnetic sensor 220 is retained in the cavity 224 during use of the sensing apparatus. rotation (162).  Where necessary, other retention or clamping mechanisms or devices may be used to retain, secure or secure the magnetic sensor (220) within the cavity (224).  Preferably, the magnetic sensor (220) has an inner end (226) mounted near the inner surface (68) of the second insert portion (56) for magnet sensing (218), and an opposite outer end ( 228).  The outer end (228) is preferably mounted near the outer surface (70) of the second insert portion (56) to provide an electrical contact point for the magnetic sensor (220).  An electrical signal or electricity may be transmitted from or to the magnetic sensor (220) in any manner suitable for conducting the electricity.  However, in the preferred embodiment, an electrical wire is connected to the outer end (228) of the magnetic sensor (220).  In addition, the electrical conduit (216) defined by the second insert portion (56) preferably allows the electrical wire to pass through the electrical conduit (216) for connection to the magnetic sensor (220) as described.  Finally, if required to ensure proper operation of the instrument insert (20), the instrument insert (20) or tool (22) may include one or more seal assemblies (not shown), preferably an assembly. rotary sealing device for containing a lubricant within the instrument insert (20) and, if desired, within the surrounding components of the tool (22) into which the instrument insert (20) is mounted.  In addition, the rotary seal assemblies also preferably inhibit the passage of undesirable fluids, such as a drilling fluid, into the instrument insert (20) and, if desired, the surrounding components of the tool (22).  Any known or conventional seal assemblies may be used.

Claims (22)

1. Instrument insert (20) for a downstream tool (22) of the type comprising an inner member (24) extending within an outer member (26), inner member (24) and outer member (26 ) being capable of a relative longitudinal movement amount, the instrument insert (20) comprises: (a) a first insert portion (54) adapted to be connected to one of the inner member (24) and the outer member (26), the first insert portion (54) comprising a first instrument component (136) of an instrument (21); (b) a second insert portion (56) adapted to be connected to one another between the inner member (24) and the outer member (26), the second insert portion (56) comprising a second instrument component (138). ) of the instrument (21); and (c) a coupling mechanism (58) for connecting the first insert portion (54) to the second insert portion (56) and for maintaining the first insert portion (54) and the second insert portion (56). ) in a fixed relative longitudinal position; wherein the instrument insert (20) is adapted for mounting within the tool (22) in a radial position between the inner member (24) and the outer member (26) such that the instrument insert (20) is capable of of a longitudinal movement relative to at least one of the inner member (24) and the outer member (26). Instrument insert (20) according to claim 1, characterized in that the inner member (24) and the outer member (26) are capable of relative rotation, wherein the first insert portion (54) ) is adapted to non-rotatably connect to one of the inner member (24) and outer member (26), wherein the second insert portion (56) is non-rotatably adapted to rotating the other between the inner member (24) and the outer member (26), and in which the coupling mechanism (58) comprises at least one bearing so that the relative rotation of the inner member (24) and the outer member (26) results in relative rotation of the first insert portion (54) and the second insert portion (56). Instrument insert (20) according to Claim 2, characterized in that the instrument (21) comprises a rotation sensing apparatus (162) for sensing the relative rotation of the inner limb (24) and the limb. external (26). Instrument insert (20) according to claim 3, characterized in that the first instrument component (136) comprises at least one magnet (218), wherein the second instrument component (138) comprises a magnetic sensor (220) for sensing the proximity of the magnet (218) to the magnetic sensor (220), and to which the first insert portion (54) and the second insert portion (56) are connected such that the sensor (220) is capable of sensing the proximity of the magnet (218) to the magnetic sensor (220). Instrument insert (20) according to claim 4, characterized in that the first insert portion (54) is adapted to be non-rotatably connected to the inner member (24), and in which the The second insert portion (56) is adapted to be non-rotatably connected to the outer member (26). Instrument insert (20) according to claim 4, characterized in that the first insert portion (54) is adapted to be non-alternatively connected to the inner member (24) so that the first insert portion (54) moves longitudinally with the inner member (24), and in which the second insert portion (56) is adapted to be alternatively connected to the outer member (26) so that the the second insert portion (56) moves longitudinally with the first insert portion (54), whereby the instrument insert (20) is capable of longitudinal movement with respect to the outer member (26). Instrument insert (20) according to Claim 2, characterized in that the instrument (21) comprises a slip-ring assembly (160) for the transmission of electricity between the inner member (24) and the limb. external (26). Instrument insert (20) according to claim 7, characterized in that the first instrument component (136) comprises a conductive slip ring (164), wherein the second instrument component (138) comprises a electrical contact assembly (166) to provide electrical contact with the slip ring (164), and to which the first insert portion (54) and the second insert portion (56) are connected such that the ring collector (164) fit the electrical contact assembly (166). Instrument insert (20) according to claim 8, characterized in that the first insert portion (54) is adapted to be non-rotatably connected to the inner member (24), and in which the The second insert portion (56) is adapted to be non-rotatably connected to the outer member (26). Instrument insert (20) according to claim 9, characterized in that the first insert portion (54) is adapted to be non-alternatively connected to the inner member (24) so that the first insert portion (54) moves longitudinally with the inner member (24), and in which the second insert portion (56) is adapted to be alternatively connected to the outer member (26) so that the second portion of the insert (56) move longitudinally with the first insert portion (54), whereby the instrument insert (20) is capable of longitudinal movement with respect to the outer member (26). Instrument insert (20) according to claim 2, characterized in that the first insert portion (54) is adapted to be non-rotatably connected to the inner member (24), and in which the The second insert portion (56) is adapted to be non-rotatably connected to the outer member (26). Instrument insert (20) according to claim 11, characterized in that the first insert portion (54) is adapted to be non-alternatively connected to the inner member (24) so that the first insert portion (54) moves longitudinally with the inner member (24), and in which the second insert portion (56) is adapted to be alternatively connected to the outer member (26) so that the second portion of the insert (56) move longitudinally with the first insert portion (54), whereby the instrument insert (20) is capable of longitudinal movement with respect to the outer member (26). An instrument insert (20) according to claim 12, further comprising a first connection mechanism (76) for non-rotating and non-alternating connection of the first insert portion (54) to the internal member (24). Instrument insert (20) according to claim 13, characterized in that the first insert portion (54) comprises a mounting sleeve (78), and to which the mounting sleeve (78) is adapted to engage the inner limb (24). Instrument insert (20) according to Claim 14, characterized in that the first connection mechanism (76) is associated with the mounting sleeve (78) for a non-rotating and non-alternative connection. from the mounting sleeve (78) to the inner member (24). Instrument insert (20) according to Claim 13, characterized in that it further comprises a second connection mechanism (108) for non-rotating and alternative connection of the second insert portion (56) to the outer member. (26). Instrument insert (20) according to claim 16, characterized in that the second insert portion (56) comprises an external insert housing (110), and in which the second connection mechanism (108) comprises one of a key (114) and a keyway (112) associated with the outer insert housing (110) which is adapted to engage a complementary structure associated with the outer member (26) so as to non-rotatably connect and alternatively the outer insert housing (110) with the outer member (26). Instrument insert (20) according to claim 16, characterized in that the instrument (21) comprises a rotation sensing apparatus (162) for sensing the relative rotation of the inner limb (24) and the limb. external (26). Instrument insert (20) according to claim 18, characterized in that the first instrument component (136) comprises at least one magnet (218), wherein the second instrument component (138) comprises a magnetic sensor (220) for sensing the proximity of the magnet (218) to the magnetic sensor (220), and to which the first insert portion (54) and the second insert portion (56) are connected such that the sensor (220) is capable of sensing the proximity of the magnet (218) to the magnetic sensor (220). An instrument insert (20) according to claim 16, wherein the instrument (21) comprises a slip ring assembly (160) for the transmission of electricity between the inner member (24) and the outer member (26). ). The instrument insert (20) of claim 20, wherein the first instrument component (136) comprises a conductive slip ring (164), wherein the second instrument component (138) comprises a contact assembly. (166) for providing an electrical contact with the slip ring, and to which the first insert portion (54) and the second insert portion (56) are connected such that the slip ring engages the contact assembly. electric (166). An instrument insert (20) according to claim 16, wherein the second insert portion (56) further comprises an external insert housing (110), and wherein the external insert housing (110) comprises a filter mechanism for filtering a fluid as fluid passes from an exterior of the external insert housing (110) to an interior of the external insert housing (110).