US3696332A - Telemetering drill string with self-cleaning connectors - Google Patents
Telemetering drill string with self-cleaning connectors Download PDFInfo
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- US3696332A US3696332A US40073A US3696332DA US3696332A US 3696332 A US3696332 A US 3696332A US 40073 A US40073 A US 40073A US 3696332D A US3696332D A US 3696332DA US 3696332 A US3696332 A US 3696332A
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- drill string
- telemetering
- contact
- ring
- electrical conductor
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- 230000013011 mating Effects 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 8
- 230000006872 improvement Effects 0.000 claims description 6
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/028—Electrical or electro-magnetic connections
- E21B17/0285—Electrical or electro-magnetic connections characterised by electrically insulating elements
Definitions
- This invention relates to transmitting an electrical signal along a drill string while it is in the borehole of a well. More particularly, the invention relates to an information telemetering drill string which can be assembled and used without special drill string manufacturing and/or drilling techniques or precautions.
- U.S. Pat. No. 2,531,120 describes a system for transmitting electrical power along a drill string to drive an electrical drilling motor. It uses ring and contact-pin electrical connectors that are mounted within mating portions of the pipe joints and avoids the need for specially constructed drill pipe sections or restrictions of drilling fluid passageway. But, the ring and contact-pin arrangement is disadvantageous with respect to transmitting an electrical information signal. In an information Signal connector-introduced noise may mask the information or provide misleading information.
- each electrical connector contains a generally ring-shaped and substantially fullcircle contact-making conductive metal portion that is: located in an annular groove within a pipe joint element; electrically insulated from the groove walls; and is electrically connected to a segment of the insulated electrical conductor.
- At least one member of each pair of mating contact-making rings is mounted adjacent to a resilient biasing means that is arranged to urge the contact-making ring toward a position from which it is displaced, with a wiping action, by the mating contactmaking ring, as the elements of the pipe joint are screwed together.
- FIG. 1 is a cross-sectional illustration of a portion of an assembled telemetering drill string of the invention.
- FIG. 2 is an enlargement of the broken line-encircled portion of FIG. 1. 7
- FIG. 3 is a cross-sectional illustration of an alternative drill string pipe joint arrangement.
- FIG. 4 is an enlargement of the broken line-encircled portion of FIG. 3.
- FIG. 5 illustrates an alternative type of electrically conductive ring-shaped contact-making element for use in the present invention.
- the present invention relates to a drill string composed of pipe sections 1 that contain a segmented electrical conductor 2. Within the conductor 2 a conductive wire 3 is surrounded by. an electrical insulating material. The electrical conductor is extended along the interior of each pipe section 1 and run through holes 4 in the box 5 and pin 6 elements of the pipe joint-forming portions of each pipe section. Annular grooves 7 and 8 are formed within mating portions of the box and pin elements.
- solid annular metal contact-making rings 9 and 10 are disposed within the grooves 7 and 8 and insulated from the groove walls by rubber or other resilient insulating material 11.
- the segments of the insulated electrical conductor 2 are connected to the contact-making rings by means such as the connector 12, pin 13 and insulating sleeve 14, as shown with respect to contact making ring 9 in FIG. 2.
- the dimensions and properties of the contact-making rings 9 and 10 and associated resilient insulating material 1 l are adjusted so that at least one of the rings is resiliently urged toward a position from which it is displaced, with a wiping action, by the mating contactmaking ring as the box and pin elements of the adjoining pipe sections are screwed together.
- ring 9 is mounted so that the surrounding resilient insulating material 11 displaces it at least several thousandths of an inch beyond the end face of box 5 when the pin 6 is removed from the box 5.
- the upper and lower ends of the segmented electrical conductor 2 are electrically connected to, respectively, a downhole measuring unit and a surface located means (not shown) for obtaining and utilizing an electrical signal.
- a downhole measuring unit and a surface located means (not shown) for obtaining and utilizing an electrical signal.
- Suitable devices and techniques for conducting such operations are known to those skilled in the art.
- FIG. 3 illustrates a pipe joint arrangement of a type, such as a l-Iydril tool joint arrangement which contains a multiplicity of sealing shoulders.
- annular grooves 20 and 21 are formed within mating portions of the box and pin elements 22 and 23 that are disposed between the sealing shoulder portions 24 and 25 of the tool joint.
- Groove 20 in box 22 contains a resilient, conductive, contact-making ring 26 which is insulated from the groove walls by resilient insulating material 11 and is connected to a segment of the insulated electrical conductor 2.
- Groove 21 in pin 23 contains a solid annular conductive metal contact-making ring 27 which is similarly insulated by material 11 and connected to a segment of the insulated electrical conductor 2.
- the contact-making ring 26 is arranged so that it expands radially inward when freed of contact with contact-making ring 27 by the removal of the pin element 23 from the box element 22. As the box and pin elements are screwed together the outer surfaces of the contactmaking rings are wiped together. The sealing of the pipe joint sealing shoulders 24 and 25 isolates the contact-making elements from fluids inside or outside the drill pipe.
- FIG. illustrates an alternative arrangement for an electrically conductive contact-making ring 30 which can be used in place of, for example, the contact-making ring 27, shown in FIG. 4.
- Contact-making ring 30 comprises arcuate conductive metal sections 31 and interconnecting flexible conductive metal sections 32 which combine to form a substantially full-circle generally ring-shaped structure that is adapted to collapse and expand along a radial direction.
- Such a radially flexible contact-making ring structure is advantageous in allowing both members of a pair of mating contact-making rings to be radially urged toward positions from which they are each displaced with a wiping action when the box and pin elements of a pipe joint are screwed together.
- the contact-making surfaces of one member of each pair of mating contactmaking rings is roughened by means of grooves or knurls and the mating surface of the other contact-making ring is made generally smooth and flat.
- Such an arrangement tends to increase the extent of effective metal-to-metal contact area between the rings while they are resiliently pressed together within the assembled tool joint.
- the mating contact-making rings are wiped together and the valleys between the ridges of the grooves or knurls provides space that can accept the pipe dope or other contaminate that is being wiped away by the rubbing together of the metal surfaces.
- the insulating material which isolates the contactmaking portions from the walls of the grooves in the pipe joint elements can be substantially any type of electrical insulating material which is resistant to the temperatures and fluids that are normally encountered in the drilling of a well.
- at least one resilient member such as a spring is preferably arranged to urge at least one member of each pair of mating contact-making rings into a position from which it is displaced when the pipe joint is connected.
- Particularly suitable insulating materials are resilient materials such as rubber, especially a silicone rubber-like resin, plastic or the like materials.
- the present type of telemetering drill string can advantageously be used in conjunction with a wire line system for obtaining and transmitting downhole measurement infonnation.
- the wire line system is installed within a section of drill string with its upper end connected to a pipe joint electrical connector of a segmented electrical conductor containing telemetering drill string.
- the composite assembly is used for telemetering information while drilling into the deep zone with sections of the telemetering drill string being added as required in order to increase the depth of the borehole.
- the running-in of the wire line system is required only once during each round tripping of the drill string, for example when it is desirable to change the drill bit.
- the number of sections of segmented electrical conductor containing telemetering drill string that is needed is only the number required to extend along the distance by which the borehole is advanced between the round trips. This advantageously avoids both (a) the time required to install a wire line system each time an additional stand of drill pipe is added and (b) the expense of stocking and maintaining sufficient segments of electrical conductor-containing telemetering drill string to reach the total depth to which a borehole is to be drilled.
- the wire line portion of such a composite system can be either partially or totally retrievable by means of the wire line.
- the wire line is electrically connected to a measuring instrument package that can be lowered into and remotely latched to or unlatched from a position within the drill collar or near the bit end of the drill string.
- a partially retrievable system at least part of the instrument package is adapted to stay within the drill string when the wire line and/or some of the instrumentation is removed by withdrawing the wire line.
- Such systems are known to those skilled in the art and substantially any type can be used in the present invention.
- a generally ring-shaped substantially full-circle contact-making ring of conductive metal that is mounted within an annular groove in a pipe joint element, is electrically insulated from the wall of the groove, and is electrically connected to a segment of said insulated electrical conductor;
- At least one resilient biasing means operatively associated with at least one of said contactmaking rings to urge the ring toward a position from which it is displaced with a wiping action by the adjacent contact-making ring as the pipe joint elements are screwed together;
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- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
A telemetering drill string in which segments of an insulated electrical conductor are joined by connectors in the pipe joints is improved by electrical connectors having generally ring-shaped contact-making surfaces which are wiped together as the pipe joints are interconnected. A process of telemetering while drilling in a deep borehole is improved by installing a wire line telemetering system between the drill bit and a section of the above type of segmented electrical conductor-containing telemetering drill string.
Description
Elmted @tates Patent [151 3,696,332 Dickson, Jr. et a1. [45] Oct. 3, 1972 1 TELEIVETERING DRILL STRING WITH 2,748,358 5/ 1956 Johnston ..340/ 18 LD SELF -CLEANING CONNECTORS [72] Inventors: Leon L. Dickson, Jr., Emmett G. 'f EmmiqerBeniamin Ward, both of Houston, Tex. 77055 Exammer N- Moskowltz Att0rneyHarold W. Coryell and J. H. McCarthy {73] Assignec: Shell Oil C0mpany,New Yo 'lg N.Y. 122] Filed: May 25, 1970 [57] CT A telemetering drill string in which segments of an in- {21 I Appl' 40073 sulated electrical conductor are joined by connectors in the pipe joints is improved by electrical connectors [52] US. Cl. ..340/18 LD, 73/151, 175/104 h i n rally ring-shaped contact-making surfaces [5 1131. CL are together as the joints are. inter- [58] Field of Search ..73/l5 1; 175/104; 340/ 18 LD connected. A process of telemetering while drilling in a deep borehole is improved by installing a wire line [56] References and telemetering system between the drill bit and a section UNITED STATES PATENTS of the above type of segmented electrical conductorcontaining telemetering drill string. 2,096,359 10/1951 Hawthorn ..340/18 LD 3,170,137 2/1965 Brandt ..340/l8 LD 4 Claims, 5 Drawing Figures 7 r a/ fl m.
4\ l s I ,1 15 2) SHEET 1 0F 2 INVENTORS:
LEON L. DICKSON,JR. EMMETT G. WARD BY: 1%; M
THEIR ATTORNEY PATENTED U01 3 I97? PATENTEDHBI 3 I872 3.696, 332
The desirability of transmitting an electrical signal along a drill string was recognized over 30 years ago. Numerous systems have been proposed. Typical earlier proposals required specially constructed drill pipe sections, such as those described in U.S. Pat. No. 2,178,931, or required internally mounted electrical connector arrangements that cause a significant reduction in the internal diameter of the drill pipe, such as those described in U.S. Pat. No. 2,301,783 or 3,253,245.
U.S. Pat. No. 2,531,120 describes a system for transmitting electrical power along a drill string to drive an electrical drilling motor. It uses ring and contact-pin electrical connectors that are mounted within mating portions of the pipe joints and avoids the need for specially constructed drill pipe sections or restrictions of drilling fluid passageway. But, the ring and contact-pin arrangement is disadvantageous with respect to transmitting an electrical information signal. In an information Signal connector-introduced noise may mask the information or provide misleading information.
In the procedures that are usually employed for assembling and disassembling or round tripping a drill string, the mating portions of the pipe joints become coated with fluids having various degrees of electrical conductivity. Any electrical connectors which are mounted in such portions of the pipe joints are almost inevitably smeared with various nonconductive fluids such as oils, greases, pipe thread lubricants, or the like. An information-conveying electrical signal tends to become noisy and relatively severely attenuated when it is conveyed across a plurality of pipe joints containing electrical connectors in which the contacting elements are rings and contact-pins. In such a situation each metal-to-metal contact area is relatively small and the effective contact resistance tends to vary widely due to the presence of differing amounts of nonconductive fluids that tend to remain between the contact-pins and rings.
The contacting faces of the pins and rings tend to become smooth and flat. Any minute particle between such metal surfaces tends to have a large effect on the conductivity across the metal-to-metal junction.
SUMMARY OF THE INVENTION This invention provides an improved telemetering drill string of a type in which segments of an insulated electrical conductor are joined by electrical connectors located in mating portions of the drill string pipe joints. In the improved drill string each electrical connector contains a generally ring-shaped and substantially fullcircle contact-making conductive metal portion that is: located in an annular groove within a pipe joint element; electrically insulated from the groove walls; and is electrically connected to a segment of the insulated electrical conductor. At least one member of each pair of mating contact-making rings is mounted adjacent to a resilient biasing means that is arranged to urge the contact-making ring toward a position from which it is displaced, with a wiping action, by the mating contactmaking ring, as the elements of the pipe joint are screwed together.
DESCRIPTION OF THE DRAWING FIG. 1 is a cross-sectional illustration of a portion of an assembled telemetering drill string of the invention.
FIG. 2 is an enlargement of the broken line-encircled portion of FIG. 1. 7
FIG. 3 is a cross-sectional illustration of an alternative drill string pipe joint arrangement.
FIG. 4 is an enlargement of the broken line-encircled portion of FIG. 3.
FIG. 5 illustrates an alternative type of electrically conductive ring-shaped contact-making element for use in the present invention.
DESCRIPTION OF THE INVENTION As shown in FIG. 1, the present invention relates to a drill string composed of pipe sections 1 that contain a segmented electrical conductor 2. Within the conductor 2 a conductive wire 3 is surrounded by. an electrical insulating material. The electrical conductor is extended along the interior of each pipe section 1 and run through holes 4 in the box 5 and pin 6 elements of the pipe joint-forming portions of each pipe section. Annular grooves 7 and 8 are formed within mating portions of the box and pin elements.
In the embodiment shown in FIGS. 1 and 2, solid annular metal contact-making rings 9 and 10 are disposed within the grooves 7 and 8 and insulated from the groove walls by rubber or other resilient insulating material 11. The segments of the insulated electrical conductor 2 are connected to the contact-making rings by means such as the connector 12, pin 13 and insulating sleeve 14, as shown with respect to contact making ring 9 in FIG. 2.
The dimensions and properties of the contact-making rings 9 and 10 and associated resilient insulating material 1 l are adjusted so that at least one of the rings is resiliently urged toward a position from which it is displaced, with a wiping action, by the mating contactmaking ring as the box and pin elements of the adjoining pipe sections are screwed together. For example, ring 9 is mounted so that the surrounding resilient insulating material 11 displaces it at least several thousandths of an inch beyond the end face of box 5 when the pin 6 is removed from the box 5.
In a telemetering operation the upper and lower ends of the segmented electrical conductor 2 are electrically connected to, respectively, a downhole measuring unit and a surface located means (not shown) for obtaining and utilizing an electrical signal. Suitable devices and techniques for conducting such operations are known to those skilled in the art.
FIG. 3 illustrates a pipe joint arrangement of a type, such as a l-Iydril tool joint arrangement which contains a multiplicity of sealing shoulders. In this embodiment, annular grooves 20 and 21 are formed within mating portions of the box and pin elements 22 and 23 that are disposed between the sealing shoulder portions 24 and 25 of the tool joint. Groove 20 in box 22 contains a resilient, conductive, contact-making ring 26 which is insulated from the groove walls by resilient insulating material 11 and is connected to a segment of the insulated electrical conductor 2. Groove 21 in pin 23 contains a solid annular conductive metal contact-making ring 27 which is similarly insulated by material 11 and connected to a segment of the insulated electrical conductor 2.
In the embodiment shown in FIGS. 3 and 4, the contact-making ring 26 is arranged so that it expands radially inward when freed of contact with contact-making ring 27 by the removal of the pin element 23 from the box element 22. As the box and pin elements are screwed together the outer surfaces of the contactmaking rings are wiped together. The sealing of the pipe joint sealing shoulders 24 and 25 isolates the contact-making elements from fluids inside or outside the drill pipe.
FIG. illustrates an alternative arrangement for an electrically conductive contact-making ring 30 which can be used in place of, for example, the contact-making ring 27, shown in FIG. 4. Contact-making ring 30 comprises arcuate conductive metal sections 31 and interconnecting flexible conductive metal sections 32 which combine to form a substantially full-circle generally ring-shaped structure that is adapted to collapse and expand along a radial direction. Such a radially flexible contact-making ring structure is advantageous in allowing both members of a pair of mating contact-making rings to be radially urged toward positions from which they are each displaced with a wiping action when the box and pin elements of a pipe joint are screwed together.
In a preferred arrangement, the contact-making surfaces of one member of each pair of mating contactmaking rings, such as the rings 9 and in FIG. 2, is roughened by means of grooves or knurls and the mating surface of the other contact-making ring is made generally smooth and flat. Such an arrangement tends to increase the extent of effective metal-to-metal contact area between the rings while they are resiliently pressed together within the assembled tool joint. As the tool joint elements are screwed together the mating contact-making rings are wiped together and the valleys between the ridges of the grooves or knurls provides space that can accept the pipe dope or other contaminate that is being wiped away by the rubbing together of the metal surfaces.
The insulating material which isolates the contactmaking portions from the walls of the grooves in the pipe joint elements can be substantially any type of electrical insulating material which is resistant to the temperatures and fluids that are normally encountered in the drilling of a well. Where desirable, for example where the insulating material is not significantly resilient, at least one resilient member such as a spring is preferably arranged to urge at least one member of each pair of mating contact-making rings into a position from which it is displaced when the pipe joint is connected. Particularly suitable insulating materials are resilient materials such as rubber, especially a silicone rubber-like resin, plastic or the like materials.
In telemetering while drilling into a deep zone within the earth, the present type of telemetering drill string can advantageously be used in conjunction with a wire line system for obtaining and transmitting downhole measurement infonnation. The wire line system is installed within a section of drill string with its upper end connected to a pipe joint electrical connector of a segmented electrical conductor containing telemetering drill string. The composite assembly is used for telemetering information while drilling into the deep zone with sections of the telemetering drill string being added as required in order to increase the depth of the borehole. In this process the running-in of the wire line system is required only once during each round tripping of the drill string, for example when it is desirable to change the drill bit. In addition, the number of sections of segmented electrical conductor containing telemetering drill string that is needed is only the number required to extend along the distance by which the borehole is advanced between the round trips. This advantageously avoids both (a) the time required to install a wire line system each time an additional stand of drill pipe is added and (b) the expense of stocking and maintaining sufficient segments of electrical conductor-containing telemetering drill string to reach the total depth to which a borehole is to be drilled.
The wire line portion of such a composite system can be either partially or totally retrievable by means of the wire line. In a totally retrievable system the wire line is electrically connected to a measuring instrument package that can be lowered into and remotely latched to or unlatched from a position within the drill collar or near the bit end of the drill string. In a partially retrievable system, at least part of the instrument package is adapted to stay within the drill string when the wire line and/or some of the instrumentation is removed by withdrawing the wire line. Such systems are known to those skilled in the art and substantially any type can be used in the present invention.
What is claimed is:
1. In a telemetering drill string in which segments of an insulated electrical conductor are joined by electrical connectors in mating portions of drill string pipe joints that contain mating sealing shoulders, an improvement in the arrangement of electrical connectors which comprises:
in each electrical connector, a generally ring-shaped substantially full-circle contact-making ring of conductive metal that is mounted within an annular groove in a pipe joint element, is electrically insulated from the wall of the groove, and is electrically connected to a segment of said insulated electrical conductor;
within each assembled pipe joint, at least one resilient biasing means operatively associated with at least one of said contactmaking rings to urge the ring toward a position from which it is displaced with a wiping action by the adjacent contact-making ring as the pipe joint elements are screwed together; and,
a location of said grooves and contact-making rings in said drill string pipe joints between the innermost and outermost portions of the mating sealing shoulders such that said grooves and rings are located beyond the inner diameter of the drill string and are isolated from the fluid in and around the drill string by the metal to metal joining of said innermost and outermost portions of the mating sealing shoulders.
2. The system of claim 1 in which, within each pair of said contact-making rings, the contact-making surface of one ring is substantially flat and smooth while the contact-making surface of the other ring is roughened to provide wiping contours for wiping the flat surface of the mating contact-making ring.
3. In a process for drilling into a relatively deep zone and telemetering downhole measurement information along a drill string within a borehole, the improvement which comprises:
extending a drill string within a borehole to a selected relatively deep depth;
installing a system for obtaining downhole measurement information and transmitting it along an extended continuous length of wire line within said drill string and connecting the wire line to a pipe joint electrical connector of a segmented electrical conductor-containing telemetering drill string; and,
adding additional drill string sections of said segmented electrical conductor-containing telemetering drill string as required in order to drill into and telemeter downhole measurement information from said deep zone.
4. In a process for drilling into a relatively deep zone and telemetering downhole measurement information along a drill string within a borehole, the improvement which comprises:
extending a drill string containing a measuring device near the drill bit within the borehole to a selected relatively deep depth; inserting a wire line measurement information telemetering means having an extendedcontinuous length of wire line into said drill string;
connecting said wire line telemetering means with the lower end being connected remotely to said measuring device and the upper end being connected to a pipe joint electrical connector of a segmented electrical conductor-containing telemetering drill string; and
adding additional drill string sections of said segmented electrical conductor-containing telemetering drill string as required in order to drill into and telemeter downhole measurement information from said deep zone.
Claims (4)
1. In a telemetering drill string in which segments of an insulated electrical conductor are joined by electrical connectors in mating portions of drill string pipe joints that contain mating sealing shoulders, an improvement in the arrangement of electrical connectors which comprises: in each electrical connector, a generally ring-shaped substantially full-circle contact-making ring of conductive metal that is mounted within an annular groove in a pipe joint element, is electrically insulated from the wall of the groove, and is electrically connected to a segment of said insulated electrical conductor; within each assembled pipe joint, at least one resilient biasing means operatively associated with at least one of said contactmaking rings to urge the ring toward a position from which it is displaced with a wiping action by the adjacent contactmaking ring as the pipe joint elements are screwed together; and, a location of said grooves and contact-making rings in said drill string pipe joints between the innermost and outermost portions of the mating sealing shoulders such that said grooves and rings are located beyond the inner diameter of the drill string and are isolated from the fluid in and around the drill string by the metal to metal joining of said innermost and outermost portions of the mating sealing shoulders.
2. The system of claim 1 in which, within each pair of said contact-making rings, the contact-making surface of one ring is substantially flat and smooth while the contact-making surface of the other ring is roughened to provide wiping contours for wiping the flat surface of the mating contact-making ring.
3. In a process for drilling into a relatively deep zone and telemetering downhole measurement information along a drill string within a borehole, the improvement which comprises: extending a drill string within a borehole to a selected relatively deep depth; installing a system for obtaining downhole measurement information and transmitting it along an extended continuous length of wire line within said drill string and connecting the wire line to a pipe joint electrical connector of a segmented electrical conductor-containing telemetering drill string; and, adding additional drill string sections of said segmented electrical conductor-containing telemetering drill string as required in order to drill into and telemeter downhole measurement information from said deep zone.
4. In a process for drilling into a relatively deep zone and telemetering downhole measurement information along a drill string within a borehole, the improvement which comprises: extending a drill string containing a measuring device near the drill bit within the borehole to a selected relatively deep depth; inserting a wire line measurement information telemetering means having an extended continuous length of wire line into said drill string; connecting said wire line telemetering means with the lower end being connected remotely to said measuring device and the upper end being connected to a pipe joint electrical connector of a segmented electrical conductor-contaIning telemetering drill string; and adding additional drill string sections of said segmented electrical conductor-containing telemetering drill string as required in order to drill into and telemeter downhole measurement information from said deep zone.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US4007370A | 1970-05-25 | 1970-05-25 |
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US3696332A true US3696332A (en) | 1972-10-03 |
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US40073A Expired - Lifetime US3696332A (en) | 1970-05-25 | 1970-05-25 | Telemetering drill string with self-cleaning connectors |
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Cited By (118)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3876972A (en) * | 1972-06-19 | 1975-04-08 | Smith International | Kelly |
US3929009A (en) * | 1972-06-20 | 1975-12-30 | Aquitaine Petrole | Measurement of drilling torque |
US3939705A (en) * | 1973-03-02 | 1976-02-24 | Schlumberger Technology Corporation | Removable downhole measuring instruments with electrical connection to surface |
US4095865A (en) * | 1977-05-23 | 1978-06-20 | Shell Oil Company | Telemetering drill string with piped electrical conductor |
US4098342A (en) * | 1977-05-25 | 1978-07-04 | Exxon Production Research Company | Method and apparatus for maintaining electric cable inside drill pipe |
DE2757085A1 (en) * | 1976-12-23 | 1978-07-06 | Shell Int Research | METHOD AND DEVICE FOR TRANSFERRING INFORMATION FROM A DRILLING HOLE TO THE EARTH SURFACE |
US4121193A (en) * | 1977-06-23 | 1978-10-17 | Shell Oil Company | Kelly and kelly cock assembly for hard-wired telemetry system |
US4130169A (en) * | 1977-04-22 | 1978-12-19 | Shell Oil Company | Downhole connector for use with drill string telemetering system |
FR2422025A1 (en) * | 1978-04-07 | 1979-11-02 | Shell Int Research | STEM EQUIPPED WITH ELECTRIC TRANSMISSION MEANS AND INTENDED TO BE USED IN A PROBE HOLE |
FR2440465A1 (en) * | 1978-11-06 | 1980-05-30 | Inst Francais Du Petrole | Tubular bar connecting flexible to bottom motor - has conductors threaded through wall for power and measurement signals |
WO1981000748A1 (en) * | 1979-09-17 | 1981-03-19 | Plastiflex Co Int | Self-sealing vacuum hose swivel fitting |
US4294318A (en) * | 1978-10-19 | 1981-10-13 | Institut Francais Du Petrole | Device for measuring the stresses applied in use to the downhole assembly of a drill pipe |
US4347900A (en) * | 1980-06-13 | 1982-09-07 | Halliburton Company | Hydraulic connector apparatus and method |
US4375239A (en) * | 1980-06-13 | 1983-03-01 | Halliburton Company | Acoustic subsea test tree and method |
US4378850A (en) * | 1980-06-13 | 1983-04-05 | Halliburton Company | Hydraulic fluid supply apparatus and method for a downhole tool |
US4379493A (en) * | 1981-05-22 | 1983-04-12 | Gene Thibodeaux | Method and apparatus for preventing wireline kinking in a directional drilling system |
FR2530876A1 (en) * | 1982-07-21 | 1984-01-27 | Inst Francais Du Petrole | ASSEMBLY FOR AN ELECTRICAL CONNECTION THROUGH A FORMED DRIVE OF MULTIPLE ELEMENTS |
EP0104993A2 (en) * | 1982-09-23 | 1984-04-04 | Schlumberger Technology Corporation | Full-bore drill stem testing apparatus with surface pressure readout |
US4495992A (en) * | 1983-07-06 | 1985-01-29 | Tetra Systems, Inc. | Hydraulic logging technique for inverted oil wells |
US4496203A (en) * | 1981-05-22 | 1985-01-29 | Coal Industry (Patents) Limited | Drill pipe sections |
US4537457A (en) * | 1983-04-28 | 1985-08-27 | Exxon Production Research Co. | Connector for providing electrical continuity across a threaded connection |
US4591226A (en) * | 1983-01-31 | 1986-05-27 | Nl Industries, Inc. | Annular electrical connectors for drill string |
US4683944A (en) * | 1985-05-06 | 1987-08-04 | Innotech Energy Corporation | Drill pipes and casings utilizing multi-conduit tubulars |
US5577925A (en) * | 1992-10-21 | 1996-11-26 | Halliburton Company | Concentric wet connector system |
US6123561A (en) * | 1998-07-14 | 2000-09-26 | Aps Technology, Inc. | Electrical coupling for a multisection conduit such as a drill pipe |
US6392317B1 (en) * | 2000-08-22 | 2002-05-21 | David R. Hall | Annular wire harness for use in drill pipe |
US20020193004A1 (en) * | 2001-06-14 | 2002-12-19 | Boyle Bruce W. | Wired pipe joint with current-loop inductive couplers |
US6561268B2 (en) * | 2000-07-05 | 2003-05-13 | Tronic Limited | Connector |
US20030147360A1 (en) * | 2002-02-06 | 2003-08-07 | Michael Nero | Automated wellbore apparatus |
US6670880B1 (en) | 2000-07-19 | 2003-12-30 | Novatek Engineering, Inc. | Downhole data transmission system |
US20040012198A1 (en) * | 1995-09-28 | 2004-01-22 | Brotzell Arthur D. | Composite coiled tubing end connector |
US6717501B2 (en) | 2000-07-19 | 2004-04-06 | Novatek Engineering, Inc. | Downhole data transmission system |
US20040113808A1 (en) * | 2002-12-10 | 2004-06-17 | Hall David R. | Signal connection for a downhole tool string |
US20040119607A1 (en) * | 2002-12-23 | 2004-06-24 | Halliburton Energy Services, Inc. | Drill string telemetry system and method |
US20040145492A1 (en) * | 2000-07-19 | 2004-07-29 | Hall David R. | Data Transmission Element for Downhole Drilling Components |
US20040150533A1 (en) * | 2003-02-04 | 2004-08-05 | Hall David R. | Downhole tool adapted for telemetry |
US20040150532A1 (en) * | 2003-01-31 | 2004-08-05 | Hall David R. | Method and apparatus for transmitting and receiving data to and from a downhole tool |
US20040164833A1 (en) * | 2000-07-19 | 2004-08-26 | Hall David R. | Inductive Coupler for Downhole Components and Method for Making Same |
US20040164838A1 (en) * | 2000-07-19 | 2004-08-26 | Hall David R. | Element for Use in an Inductive Coupler for Downhole Drilling Components |
US6799632B2 (en) | 2002-08-05 | 2004-10-05 | Intelliserv, Inc. | Expandable metal liner for downhole components |
US20040206511A1 (en) * | 2003-04-21 | 2004-10-21 | Tilton Frederick T. | Wired casing |
US20040219831A1 (en) * | 2003-01-31 | 2004-11-04 | Hall David R. | Data transmission system for a downhole component |
US20040217880A1 (en) * | 2003-04-29 | 2004-11-04 | Brian Clark | Method and apparatus for performing diagnostics in a wellbore operation |
US20040221995A1 (en) * | 2003-05-06 | 2004-11-11 | Hall David R. | Loaded transducer for downhole drilling components |
US20040242044A1 (en) * | 2001-06-26 | 2004-12-02 | Philip Head | Electrical conducting system |
US20040244964A1 (en) * | 2003-06-09 | 2004-12-09 | Hall David R. | Electrical transmission line diametrical retention mechanism |
US20040246142A1 (en) * | 2003-06-03 | 2004-12-09 | Hall David R. | Transducer for downhole drilling components |
US20050001735A1 (en) * | 2003-07-02 | 2005-01-06 | Hall David R. | Link module for a downhole drilling network |
US20050001738A1 (en) * | 2003-07-02 | 2005-01-06 | Hall David R. | Transmission element for downhole drilling components |
US20050001736A1 (en) * | 2003-07-02 | 2005-01-06 | Hall David R. | Clamp to retain an electrical transmission line in a passageway |
US20050045339A1 (en) * | 2003-09-02 | 2005-03-03 | Hall David R. | Drilling jar for use in a downhole network |
US20050046590A1 (en) * | 2003-09-02 | 2005-03-03 | Hall David R. | Polished downhole transducer having improved signal coupling |
US20050046591A1 (en) * | 2003-08-29 | 2005-03-03 | Nicolas Pacault | Method and apparatus for performing diagnostics on a downhole communication system |
US20050067159A1 (en) * | 2003-09-25 | 2005-03-31 | Hall David R. | Load-Resistant Coaxial Transmission Line |
US20050074988A1 (en) * | 2003-05-06 | 2005-04-07 | Hall David R. | Improved electrical contact for downhole drilling networks |
US20050074998A1 (en) * | 2003-10-02 | 2005-04-07 | Hall David R. | Tool Joints Adapted for Electrical Transmission |
US20050082092A1 (en) * | 2002-08-05 | 2005-04-21 | Hall David R. | Apparatus in a Drill String |
GB2407334A (en) * | 2003-10-22 | 2005-04-27 | Schlumberger Holdings | Redundant telemetry system |
US6888473B1 (en) * | 2000-07-20 | 2005-05-03 | Intelliserv, Inc. | Repeatable reference for positioning sensors and transducers in drill pipe |
US20050095827A1 (en) * | 2003-11-05 | 2005-05-05 | Hall David R. | An internal coaxial cable electrical connector for use in downhole tools |
US20050093296A1 (en) * | 2003-10-31 | 2005-05-05 | Hall David R. | An Upset Downhole Component |
US20050092499A1 (en) * | 2003-10-31 | 2005-05-05 | Hall David R. | Improved drill string transmission line |
US20050115717A1 (en) * | 2003-11-29 | 2005-06-02 | Hall David R. | Improved Downhole Tool Liner |
US20050118848A1 (en) * | 2003-11-28 | 2005-06-02 | Hall David R. | Seal for coaxial cable in downhole tools |
US20050173128A1 (en) * | 2004-02-10 | 2005-08-11 | Hall David R. | Apparatus and Method for Routing a Transmission Line through a Downhole Tool |
US6938697B2 (en) | 2001-05-17 | 2005-09-06 | Weatherford/Lamb, Inc. | Apparatus and methods for tubular makeup interlock |
US20050212530A1 (en) * | 2004-03-24 | 2005-09-29 | Hall David R | Method and Apparatus for Testing Electromagnetic Connectivity in a Drill String |
US6994176B2 (en) | 2002-07-29 | 2006-02-07 | Weatherford/Lamb, Inc. | Adjustable rotating guides for spider or elevator |
US7004264B2 (en) | 2002-03-16 | 2006-02-28 | Weatherford/Lamb, Inc. | Bore lining and drilling |
US7013997B2 (en) | 1994-10-14 | 2006-03-21 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7036610B1 (en) | 1994-10-14 | 2006-05-02 | Weatherford / Lamb, Inc. | Apparatus and method for completing oil and gas wells |
US7040420B2 (en) | 1994-10-14 | 2006-05-09 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7096982B2 (en) | 2003-02-27 | 2006-08-29 | Weatherford/Lamb, Inc. | Drill shoe |
US7100713B2 (en) | 2000-04-28 | 2006-09-05 | Weatherford/Lamb, Inc. | Expandable apparatus for drift and reaming borehole |
US7105098B1 (en) | 2002-06-06 | 2006-09-12 | Sandia Corporation | Method to control artifacts of microstructural fabrication |
US7131505B2 (en) | 2002-12-30 | 2006-11-07 | Weatherford/Lamb, Inc. | Drilling with concentric strings of casing |
US20070169929A1 (en) * | 2003-12-31 | 2007-07-26 | Hall David R | Apparatus and method for bonding a transmission line to a downhole tool |
EP1332270B1 (en) * | 2000-11-10 | 2007-08-29 | Baker Hughes Incorporated | Integrated modular connector in a drill pipe |
US20070251729A1 (en) * | 2006-05-01 | 2007-11-01 | Halliburton Energy Services, Inc. | Downhole motor with a continuous conductive path |
US20070284873A1 (en) * | 2006-05-22 | 2007-12-13 | Funke Daniel J | Pipestring comprising composite pipe segments |
US20080041575A1 (en) * | 2006-07-10 | 2008-02-21 | Schlumberger Technology Corporation | Electromagnetic wellbore telemetry system for tubular strings |
US7362235B1 (en) | 2002-05-15 | 2008-04-22 | Sandria Corporation | Impedance-matched drilling telemetry system |
US7407006B2 (en) | 1999-01-04 | 2008-08-05 | Weatherford/Lamb, Inc. | System for logging formations surrounding a wellbore |
US20080216907A1 (en) * | 2007-03-08 | 2008-09-11 | National Coupling Company, Inc. | Hydraulic coupling member with electrical bonding contractor |
US20090038849A1 (en) * | 2007-08-07 | 2009-02-12 | Schlumberger Technology Corporation | Communication Connections for Wired Drill Pipe Joints |
US7513305B2 (en) | 1999-01-04 | 2009-04-07 | Weatherford/Lamb, Inc. | Apparatus and methods for operating a tool in a wellbore |
US20100007519A1 (en) * | 2005-03-31 | 2010-01-14 | Raghu Madhavan | Method and conduit for transmitting signals |
US7650944B1 (en) | 2003-07-11 | 2010-01-26 | Weatherford/Lamb, Inc. | Vessel for well intervention |
US20100071188A1 (en) * | 2008-09-25 | 2010-03-25 | Raghu Madhavan | Wired drill pipe having conductive end connections |
US20100099835A1 (en) * | 2008-10-22 | 2010-04-22 | Stokes Casey D | Production of Vinylidene-Terminated and Sulfide-Terminated Telechelic Polyolefins Via Quenching with Disulfides |
US7712523B2 (en) | 2000-04-17 | 2010-05-11 | Weatherford/Lamb, Inc. | Top drive casing system |
US7730965B2 (en) | 2002-12-13 | 2010-06-08 | Weatherford/Lamb, Inc. | Retractable joint and cementing shoe for use in completing a wellbore |
WO2010102077A2 (en) | 2009-03-04 | 2010-09-10 | Intelliserv International Holding, Ltd | System and method of using a saver sub in a drilling system |
US7857052B2 (en) | 2006-05-12 | 2010-12-28 | Weatherford/Lamb, Inc. | Stage cementing methods used in casing while drilling |
US20110048692A1 (en) * | 2007-06-08 | 2011-03-03 | Intelliserv Llc | Repeater for wired pipe |
US20110101675A1 (en) * | 2009-11-04 | 2011-05-05 | National Coupling Compay, Inc. | Hydraulic Coupling Member with Dual Electrical Bonding Contacts |
US7938201B2 (en) | 2002-12-13 | 2011-05-10 | Weatherford/Lamb, Inc. | Deep water drilling with casing |
CN102165135A (en) * | 2008-09-30 | 2011-08-24 | 瓦姆钻杆钻具法国公司 | Instrumented drill string element |
US20110203846A1 (en) * | 2010-02-22 | 2011-08-25 | Schlumberger Technology Corporation | Method and apparatus for seismic data acquisition during drilling operations |
US8049506B2 (en) | 2009-02-26 | 2011-11-01 | Aquatic Company | Wired pipe with wireless joint transceiver |
USRE42877E1 (en) | 2003-02-07 | 2011-11-01 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
US8066033B2 (en) | 1995-09-28 | 2011-11-29 | Fiberspar Corporation | Composite spoolable tube |
US8187687B2 (en) | 2006-03-21 | 2012-05-29 | Fiberspar Corporation | Reinforcing matrix for spoolable pipe |
US8276689B2 (en) | 2006-05-22 | 2012-10-02 | Weatherford/Lamb, Inc. | Methods and apparatus for drilling with casing |
US8668510B2 (en) | 2010-11-16 | 2014-03-11 | Vam Drilling France | Tubular component having an electrically insulated link portion with a dielectric defining an annular sealing surface |
US8671992B2 (en) | 2007-02-02 | 2014-03-18 | Fiberspar Corporation | Multi-cell spoolable composite pipe |
US8678042B2 (en) | 1995-09-28 | 2014-03-25 | Fiberspar Corporation | Composite spoolable tube |
US8678041B2 (en) | 2004-02-27 | 2014-03-25 | Fiberspar Corporation | Fiber reinforced spoolable pipe |
US8746289B2 (en) | 2007-02-15 | 2014-06-10 | Fiberspar Corporation | Weighted spoolable pipe |
US8763647B2 (en) | 2001-04-27 | 2014-07-01 | Fiberspar Corporation | Composite tubing |
US8839822B2 (en) | 2006-03-22 | 2014-09-23 | National Oilwell Varco, L.P. | Dual containment systems, methods and kits |
US8955599B2 (en) | 2009-12-15 | 2015-02-17 | Fiberspar Corporation | System and methods for removing fluids from a subterranean well |
US8985154B2 (en) | 2007-10-23 | 2015-03-24 | Fiberspar Corporation | Heated pipe and methods of transporting viscous fluid |
US9127546B2 (en) | 2009-01-23 | 2015-09-08 | Fiberspar Coproation | Downhole fluid separation |
US20150273586A1 (en) * | 2014-03-28 | 2015-10-01 | Baker Hughes Incorporated | Additive Manufacturing Process for Tubular with Embedded Electrical Conductors |
US9206676B2 (en) | 2009-12-15 | 2015-12-08 | Fiberspar Corporation | System and methods for removing fluids from a subterranean well |
US9890880B2 (en) | 2012-08-10 | 2018-02-13 | National Oilwell Varco, L.P. | Composite coiled tubing connectors |
US10090624B1 (en) | 2018-01-03 | 2018-10-02 | Jianying Chu | Bottom hole assembly tool bus system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2096359A (en) * | 1936-01-14 | 1937-10-19 | Geophysical Res Corp | Apparatus for subsurface surveying |
US2748358A (en) * | 1952-01-08 | 1956-05-29 | Signal Oil & Gas Co | Combination oil well tubing and electrical cable construction |
US3170137A (en) * | 1962-07-12 | 1965-02-16 | California Research Corp | Method of improving electrical signal transmission in wells |
-
1970
- 1970-05-25 US US40073A patent/US3696332A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2096359A (en) * | 1936-01-14 | 1937-10-19 | Geophysical Res Corp | Apparatus for subsurface surveying |
US2748358A (en) * | 1952-01-08 | 1956-05-29 | Signal Oil & Gas Co | Combination oil well tubing and electrical cable construction |
US3170137A (en) * | 1962-07-12 | 1965-02-16 | California Research Corp | Method of improving electrical signal transmission in wells |
Cited By (182)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3876972A (en) * | 1972-06-19 | 1975-04-08 | Smith International | Kelly |
US3929009A (en) * | 1972-06-20 | 1975-12-30 | Aquitaine Petrole | Measurement of drilling torque |
US3939705A (en) * | 1973-03-02 | 1976-02-24 | Schlumberger Technology Corporation | Removable downhole measuring instruments with electrical connection to surface |
DE2757085A1 (en) * | 1976-12-23 | 1978-07-06 | Shell Int Research | METHOD AND DEVICE FOR TRANSFERRING INFORMATION FROM A DRILLING HOLE TO THE EARTH SURFACE |
FR2375433A1 (en) * | 1976-12-23 | 1978-07-21 | Shell Int Research | METHOD AND APPARATUS FOR REMOTELY TRANSMITTING INFORMATION FROM A PROBE HOLE TO THE SURFACE |
US4126848A (en) * | 1976-12-23 | 1978-11-21 | Shell Oil Company | Drill string telemeter system |
US4130169A (en) * | 1977-04-22 | 1978-12-19 | Shell Oil Company | Downhole connector for use with drill string telemetering system |
US4095865A (en) * | 1977-05-23 | 1978-06-20 | Shell Oil Company | Telemetering drill string with piped electrical conductor |
US4098342A (en) * | 1977-05-25 | 1978-07-04 | Exxon Production Research Company | Method and apparatus for maintaining electric cable inside drill pipe |
FR2395390A1 (en) * | 1977-06-23 | 1979-01-19 | Shell Int Research | DRIVE ROD-WEAR FITTING ASSEMBLY WITH TELEMEASURE MEASURES USED WITH A DRILL TUBE TRAIN |
US4121193A (en) * | 1977-06-23 | 1978-10-17 | Shell Oil Company | Kelly and kelly cock assembly for hard-wired telemetry system |
FR2422025A1 (en) * | 1978-04-07 | 1979-11-02 | Shell Int Research | STEM EQUIPPED WITH ELECTRIC TRANSMISSION MEANS AND INTENDED TO BE USED IN A PROBE HOLE |
US4220381A (en) * | 1978-04-07 | 1980-09-02 | Shell Oil Company | Drill pipe telemetering system with electrodes exposed to mud |
US4294318A (en) * | 1978-10-19 | 1981-10-13 | Institut Francais Du Petrole | Device for measuring the stresses applied in use to the downhole assembly of a drill pipe |
FR2440465A1 (en) * | 1978-11-06 | 1980-05-30 | Inst Francais Du Petrole | Tubular bar connecting flexible to bottom motor - has conductors threaded through wall for power and measurement signals |
WO1981000748A1 (en) * | 1979-09-17 | 1981-03-19 | Plastiflex Co Int | Self-sealing vacuum hose swivel fitting |
US4345805A (en) * | 1979-09-17 | 1982-08-24 | Plastiflex Company International | Self-sealing vacuum hose swivel fitting |
US4347900A (en) * | 1980-06-13 | 1982-09-07 | Halliburton Company | Hydraulic connector apparatus and method |
US4375239A (en) * | 1980-06-13 | 1983-03-01 | Halliburton Company | Acoustic subsea test tree and method |
US4378850A (en) * | 1980-06-13 | 1983-04-05 | Halliburton Company | Hydraulic fluid supply apparatus and method for a downhole tool |
US4496203A (en) * | 1981-05-22 | 1985-01-29 | Coal Industry (Patents) Limited | Drill pipe sections |
US4379493A (en) * | 1981-05-22 | 1983-04-12 | Gene Thibodeaux | Method and apparatus for preventing wireline kinking in a directional drilling system |
EP0099805A1 (en) * | 1982-07-21 | 1984-02-01 | Institut Français du Pétrole | Assembly for an electrical connection through a conduit made up of several elements |
FR2530876A1 (en) * | 1982-07-21 | 1984-01-27 | Inst Francais Du Petrole | ASSEMBLY FOR AN ELECTRICAL CONNECTION THROUGH A FORMED DRIVE OF MULTIPLE ELEMENTS |
US4510797A (en) * | 1982-09-23 | 1985-04-16 | Schlumberger Technology Corporation | Full-bore drill stem testing apparatus with surface pressure readout |
EP0104993A3 (en) * | 1982-09-23 | 1986-03-26 | Schlumberger Technology Corporation | Full-bore drill stem testing apparatus with surface pressure readout |
EP0104993A2 (en) * | 1982-09-23 | 1984-04-04 | Schlumberger Technology Corporation | Full-bore drill stem testing apparatus with surface pressure readout |
US4591226A (en) * | 1983-01-31 | 1986-05-27 | Nl Industries, Inc. | Annular electrical connectors for drill string |
US4537457A (en) * | 1983-04-28 | 1985-08-27 | Exxon Production Research Co. | Connector for providing electrical continuity across a threaded connection |
US4495992A (en) * | 1983-07-06 | 1985-01-29 | Tetra Systems, Inc. | Hydraulic logging technique for inverted oil wells |
US4683944A (en) * | 1985-05-06 | 1987-08-04 | Innotech Energy Corporation | Drill pipes and casings utilizing multi-conduit tubulars |
US5577925A (en) * | 1992-10-21 | 1996-11-26 | Halliburton Company | Concentric wet connector system |
US7013997B2 (en) | 1994-10-14 | 2006-03-21 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7040420B2 (en) | 1994-10-14 | 2006-05-09 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7036610B1 (en) | 1994-10-14 | 2006-05-02 | Weatherford / Lamb, Inc. | Apparatus and method for completing oil and gas wells |
US7234542B2 (en) | 1994-10-14 | 2007-06-26 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US8110741B2 (en) * | 1995-09-28 | 2012-02-07 | Fiberspar Corporation | Composite coiled tubing end connector |
US7498509B2 (en) * | 1995-09-28 | 2009-03-03 | Fiberspar Corporation | Composite coiled tubing end connector |
US20040012198A1 (en) * | 1995-09-28 | 2004-01-22 | Brotzell Arthur D. | Composite coiled tubing end connector |
US8066033B2 (en) | 1995-09-28 | 2011-11-29 | Fiberspar Corporation | Composite spoolable tube |
US8678042B2 (en) | 1995-09-28 | 2014-03-25 | Fiberspar Corporation | Composite spoolable tube |
US6123561A (en) * | 1998-07-14 | 2000-09-26 | Aps Technology, Inc. | Electrical coupling for a multisection conduit such as a drill pipe |
US7407006B2 (en) | 1999-01-04 | 2008-08-05 | Weatherford/Lamb, Inc. | System for logging formations surrounding a wellbore |
US7513305B2 (en) | 1999-01-04 | 2009-04-07 | Weatherford/Lamb, Inc. | Apparatus and methods for operating a tool in a wellbore |
US7712523B2 (en) | 2000-04-17 | 2010-05-11 | Weatherford/Lamb, Inc. | Top drive casing system |
US7100713B2 (en) | 2000-04-28 | 2006-09-05 | Weatherford/Lamb, Inc. | Expandable apparatus for drift and reaming borehole |
US6561268B2 (en) * | 2000-07-05 | 2003-05-13 | Tronic Limited | Connector |
US6670880B1 (en) | 2000-07-19 | 2003-12-30 | Novatek Engineering, Inc. | Downhole data transmission system |
US20040145492A1 (en) * | 2000-07-19 | 2004-07-29 | Hall David R. | Data Transmission Element for Downhole Drilling Components |
US7064676B2 (en) | 2000-07-19 | 2006-06-20 | Intelliserv, Inc. | Downhole data transmission system |
US20040164833A1 (en) * | 2000-07-19 | 2004-08-26 | Hall David R. | Inductive Coupler for Downhole Components and Method for Making Same |
US6717501B2 (en) | 2000-07-19 | 2004-04-06 | Novatek Engineering, Inc. | Downhole data transmission system |
US20040104797A1 (en) * | 2000-07-19 | 2004-06-03 | Hall David R. | Downhole data transmission system |
US7098767B2 (en) | 2000-07-19 | 2006-08-29 | Intelliserv, Inc. | Element for use in an inductive coupler for downhole drilling components |
US7040003B2 (en) | 2000-07-19 | 2006-05-09 | Intelliserv, Inc. | Inductive coupler for downhole components and method for making same |
US20040164838A1 (en) * | 2000-07-19 | 2004-08-26 | Hall David R. | Element for Use in an Inductive Coupler for Downhole Drilling Components |
US6992554B2 (en) | 2000-07-19 | 2006-01-31 | Intelliserv, Inc. | Data transmission element for downhole drilling components |
US6888473B1 (en) * | 2000-07-20 | 2005-05-03 | Intelliserv, Inc. | Repeatable reference for positioning sensors and transducers in drill pipe |
US6392317B1 (en) * | 2000-08-22 | 2002-05-21 | David R. Hall | Annular wire harness for use in drill pipe |
EP1332270B1 (en) * | 2000-11-10 | 2007-08-29 | Baker Hughes Incorporated | Integrated modular connector in a drill pipe |
US8763647B2 (en) | 2001-04-27 | 2014-07-01 | Fiberspar Corporation | Composite tubing |
US6938697B2 (en) | 2001-05-17 | 2005-09-06 | Weatherford/Lamb, Inc. | Apparatus and methods for tubular makeup interlock |
US20020193004A1 (en) * | 2001-06-14 | 2002-12-19 | Boyle Bruce W. | Wired pipe joint with current-loop inductive couplers |
US7114970B2 (en) * | 2001-06-26 | 2006-10-03 | Weatherford/Lamb, Inc. | Electrical conducting system |
US20040242044A1 (en) * | 2001-06-26 | 2004-12-02 | Philip Head | Electrical conducting system |
US20030147360A1 (en) * | 2002-02-06 | 2003-08-07 | Michael Nero | Automated wellbore apparatus |
WO2003067828A1 (en) | 2002-02-06 | 2003-08-14 | Weatherford/Lamb, Inc. | Automated wellbore apparatus and method based on a centralised bus network |
US7004264B2 (en) | 2002-03-16 | 2006-02-28 | Weatherford/Lamb, Inc. | Bore lining and drilling |
US7362235B1 (en) | 2002-05-15 | 2008-04-22 | Sandria Corporation | Impedance-matched drilling telemetry system |
US7105098B1 (en) | 2002-06-06 | 2006-09-12 | Sandia Corporation | Method to control artifacts of microstructural fabrication |
US6994176B2 (en) | 2002-07-29 | 2006-02-07 | Weatherford/Lamb, Inc. | Adjustable rotating guides for spider or elevator |
US20050039912A1 (en) * | 2002-08-05 | 2005-02-24 | Hall David R. | Conformable Apparatus in a Drill String |
US20050082092A1 (en) * | 2002-08-05 | 2005-04-21 | Hall David R. | Apparatus in a Drill String |
US7243717B2 (en) | 2002-08-05 | 2007-07-17 | Intelliserv, Inc. | Apparatus in a drill string |
US7261154B2 (en) | 2002-08-05 | 2007-08-28 | Intelliserv, Inc. | Conformable apparatus in a drill string |
US6799632B2 (en) | 2002-08-05 | 2004-10-05 | Intelliserv, Inc. | Expandable metal liner for downhole components |
US7098802B2 (en) | 2002-12-10 | 2006-08-29 | Intelliserv, Inc. | Signal connection for a downhole tool string |
US20040113808A1 (en) * | 2002-12-10 | 2004-06-17 | Hall David R. | Signal connection for a downhole tool string |
US7730965B2 (en) | 2002-12-13 | 2010-06-08 | Weatherford/Lamb, Inc. | Retractable joint and cementing shoe for use in completing a wellbore |
US7938201B2 (en) | 2002-12-13 | 2011-05-10 | Weatherford/Lamb, Inc. | Deep water drilling with casing |
US7566235B2 (en) | 2002-12-23 | 2009-07-28 | Halliburton Energy Services, Inc. | Electrical connection assembly |
US20040119607A1 (en) * | 2002-12-23 | 2004-06-24 | Halliburton Energy Services, Inc. | Drill string telemetry system and method |
US20070018848A1 (en) * | 2002-12-23 | 2007-01-25 | Halliburton Energy Services, Inc. | Electrical connection assembly |
US7084782B2 (en) | 2002-12-23 | 2006-08-01 | Halliburton Energy Services, Inc. | Drill string telemetry system and method |
US7131505B2 (en) | 2002-12-30 | 2006-11-07 | Weatherford/Lamb, Inc. | Drilling with concentric strings of casing |
US20040219831A1 (en) * | 2003-01-31 | 2004-11-04 | Hall David R. | Data transmission system for a downhole component |
US6830467B2 (en) | 2003-01-31 | 2004-12-14 | Intelliserv, Inc. | Electrical transmission line diametrical retainer |
US20040150532A1 (en) * | 2003-01-31 | 2004-08-05 | Hall David R. | Method and apparatus for transmitting and receiving data to and from a downhole tool |
US7190280B2 (en) | 2003-01-31 | 2007-03-13 | Intelliserv, Inc. | Method and apparatus for transmitting and receiving data to and from a downhole tool |
US7852232B2 (en) | 2003-02-04 | 2010-12-14 | Intelliserv, Inc. | Downhole tool adapted for telemetry |
US20040150533A1 (en) * | 2003-02-04 | 2004-08-05 | Hall David R. | Downhole tool adapted for telemetry |
USRE42877E1 (en) | 2003-02-07 | 2011-11-01 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
US7096982B2 (en) | 2003-02-27 | 2006-08-29 | Weatherford/Lamb, Inc. | Drill shoe |
US20040206511A1 (en) * | 2003-04-21 | 2004-10-21 | Tilton Frederick T. | Wired casing |
US7096961B2 (en) | 2003-04-29 | 2006-08-29 | Schlumberger Technology Corporation | Method and apparatus for performing diagnostics in a wellbore operation |
US20040217880A1 (en) * | 2003-04-29 | 2004-11-04 | Brian Clark | Method and apparatus for performing diagnostics in a wellbore operation |
US20040221995A1 (en) * | 2003-05-06 | 2004-11-11 | Hall David R. | Loaded transducer for downhole drilling components |
US7002445B2 (en) * | 2003-05-06 | 2006-02-21 | Intelliserv, Inc. | Loaded transducer for downhole drilling components |
US20050074988A1 (en) * | 2003-05-06 | 2005-04-07 | Hall David R. | Improved electrical contact for downhole drilling networks |
US20050236160A1 (en) * | 2003-05-06 | 2005-10-27 | Hall David R | Loaded transducer for downhole drilling components |
US6929493B2 (en) | 2003-05-06 | 2005-08-16 | Intelliserv, Inc. | Electrical contact for downhole drilling networks |
US6913093B2 (en) | 2003-05-06 | 2005-07-05 | Intelliserv, Inc. | Loaded transducer for downhole drilling components |
WO2004104465A3 (en) * | 2003-05-21 | 2005-12-29 | Fiberspar Corp | Composite coiled tubing end connector |
GB2418240A (en) * | 2003-05-21 | 2006-03-22 | Fiberspar Corp | Composite coiled tubing end connector |
WO2004104465A2 (en) * | 2003-05-21 | 2004-12-02 | Fiberspar Corporation | Composite coiled tubing end connector |
GB2418240B (en) * | 2003-05-21 | 2006-10-11 | Fiberspar Corp | Composite coiled tubing end connector |
US7053788B2 (en) | 2003-06-03 | 2006-05-30 | Intelliserv, Inc. | Transducer for downhole drilling components |
US20040246142A1 (en) * | 2003-06-03 | 2004-12-09 | Hall David R. | Transducer for downhole drilling components |
US6981546B2 (en) | 2003-06-09 | 2006-01-03 | Intelliserv, Inc. | Electrical transmission line diametrical retention mechanism |
US20040244964A1 (en) * | 2003-06-09 | 2004-12-09 | Hall David R. | Electrical transmission line diametrical retention mechanism |
US20050001735A1 (en) * | 2003-07-02 | 2005-01-06 | Hall David R. | Link module for a downhole drilling network |
US20050001738A1 (en) * | 2003-07-02 | 2005-01-06 | Hall David R. | Transmission element for downhole drilling components |
US20050001736A1 (en) * | 2003-07-02 | 2005-01-06 | Hall David R. | Clamp to retain an electrical transmission line in a passageway |
US7224288B2 (en) | 2003-07-02 | 2007-05-29 | Intelliserv, Inc. | Link module for a downhole drilling network |
US7650944B1 (en) | 2003-07-11 | 2010-01-26 | Weatherford/Lamb, Inc. | Vessel for well intervention |
US20050046591A1 (en) * | 2003-08-29 | 2005-03-03 | Nicolas Pacault | Method and apparatus for performing diagnostics on a downhole communication system |
US6950034B2 (en) | 2003-08-29 | 2005-09-27 | Schlumberger Technology Corporation | Method and apparatus for performing diagnostics on a downhole communication system |
US6991035B2 (en) | 2003-09-02 | 2006-01-31 | Intelliserv, Inc. | Drilling jar for use in a downhole network |
US20050046590A1 (en) * | 2003-09-02 | 2005-03-03 | Hall David R. | Polished downhole transducer having improved signal coupling |
US20050045339A1 (en) * | 2003-09-02 | 2005-03-03 | Hall David R. | Drilling jar for use in a downhole network |
US6982384B2 (en) | 2003-09-25 | 2006-01-03 | Intelliserv, Inc. | Load-resistant coaxial transmission line |
US20050067159A1 (en) * | 2003-09-25 | 2005-03-31 | Hall David R. | Load-Resistant Coaxial Transmission Line |
US20050074998A1 (en) * | 2003-10-02 | 2005-04-07 | Hall David R. | Tool Joints Adapted for Electrical Transmission |
US7040415B2 (en) | 2003-10-22 | 2006-05-09 | Schlumberger Technology Corporation | Downhole telemetry system and method |
GB2407334A (en) * | 2003-10-22 | 2005-04-27 | Schlumberger Holdings | Redundant telemetry system |
GB2407334B (en) * | 2003-10-22 | 2006-03-22 | Schlumberger Holdings | Downhole telemetry system and method |
US20050087368A1 (en) * | 2003-10-22 | 2005-04-28 | Boyle Bruce W. | Downhole telemetry system and method |
US20050092499A1 (en) * | 2003-10-31 | 2005-05-05 | Hall David R. | Improved drill string transmission line |
US20050093296A1 (en) * | 2003-10-31 | 2005-05-05 | Hall David R. | An Upset Downhole Component |
US7017667B2 (en) | 2003-10-31 | 2006-03-28 | Intelliserv, Inc. | Drill string transmission line |
US6968611B2 (en) | 2003-11-05 | 2005-11-29 | Intelliserv, Inc. | Internal coaxial cable electrical connector for use in downhole tools |
US20050095827A1 (en) * | 2003-11-05 | 2005-05-05 | Hall David R. | An internal coaxial cable electrical connector for use in downhole tools |
US20050118848A1 (en) * | 2003-11-28 | 2005-06-02 | Hall David R. | Seal for coaxial cable in downhole tools |
US6945802B2 (en) | 2003-11-28 | 2005-09-20 | Intelliserv, Inc. | Seal for coaxial cable in downhole tools |
US20050115717A1 (en) * | 2003-11-29 | 2005-06-02 | Hall David R. | Improved Downhole Tool Liner |
US20070169929A1 (en) * | 2003-12-31 | 2007-07-26 | Hall David R | Apparatus and method for bonding a transmission line to a downhole tool |
US7291303B2 (en) | 2003-12-31 | 2007-11-06 | Intelliserv, Inc. | Method for bonding a transmission line to a downhole tool |
US20050173128A1 (en) * | 2004-02-10 | 2005-08-11 | Hall David R. | Apparatus and Method for Routing a Transmission Line through a Downhole Tool |
US7069999B2 (en) | 2004-02-10 | 2006-07-04 | Intelliserv, Inc. | Apparatus and method for routing a transmission line through a downhole tool |
US8678041B2 (en) | 2004-02-27 | 2014-03-25 | Fiberspar Corporation | Fiber reinforced spoolable pipe |
US20050212530A1 (en) * | 2004-03-24 | 2005-09-29 | Hall David R | Method and Apparatus for Testing Electromagnetic Connectivity in a Drill String |
US20100007519A1 (en) * | 2005-03-31 | 2010-01-14 | Raghu Madhavan | Method and conduit for transmitting signals |
US8344905B2 (en) * | 2005-03-31 | 2013-01-01 | Intelliserv, Llc | Method and conduit for transmitting signals |
US8187687B2 (en) | 2006-03-21 | 2012-05-29 | Fiberspar Corporation | Reinforcing matrix for spoolable pipe |
US8839822B2 (en) | 2006-03-22 | 2014-09-23 | National Oilwell Varco, L.P. | Dual containment systems, methods and kits |
US7832503B2 (en) | 2006-05-01 | 2010-11-16 | Halliburton Energy Services, Inc. | Downhole motor with a continuous conductive path |
US20070251729A1 (en) * | 2006-05-01 | 2007-11-01 | Halliburton Energy Services, Inc. | Downhole motor with a continuous conductive path |
US7857052B2 (en) | 2006-05-12 | 2010-12-28 | Weatherford/Lamb, Inc. | Stage cementing methods used in casing while drilling |
US8276689B2 (en) | 2006-05-22 | 2012-10-02 | Weatherford/Lamb, Inc. | Methods and apparatus for drilling with casing |
US20070284873A1 (en) * | 2006-05-22 | 2007-12-13 | Funke Daniel J | Pipestring comprising composite pipe segments |
US7648378B2 (en) * | 2006-05-22 | 2010-01-19 | Parker-Hannifin Corporation | Pipestring comprising composite pipe segments |
US7859426B2 (en) | 2006-07-10 | 2010-12-28 | Intelliserv, Llc | Electromagnetic wellbore telemetry system for tubular strings |
US7605715B2 (en) | 2006-07-10 | 2009-10-20 | Schlumberger Technology Corporation | Electromagnetic wellbore telemetry system for tubular strings |
US20080041575A1 (en) * | 2006-07-10 | 2008-02-21 | Schlumberger Technology Corporation | Electromagnetic wellbore telemetry system for tubular strings |
US8671992B2 (en) | 2007-02-02 | 2014-03-18 | Fiberspar Corporation | Multi-cell spoolable composite pipe |
US8746289B2 (en) | 2007-02-15 | 2014-06-10 | Fiberspar Corporation | Weighted spoolable pipe |
US7762824B2 (en) * | 2007-03-08 | 2010-07-27 | National Coupling Company, Inc. | Hydraulic coupling member with electrical bonding contractor |
US20080216907A1 (en) * | 2007-03-08 | 2008-09-11 | National Coupling Company, Inc. | Hydraulic coupling member with electrical bonding contractor |
US20110048692A1 (en) * | 2007-06-08 | 2011-03-03 | Intelliserv Llc | Repeater for wired pipe |
US8474875B2 (en) * | 2007-06-08 | 2013-07-02 | Intelliserv, Llc | Repeater for wired pipe |
US20090038849A1 (en) * | 2007-08-07 | 2009-02-12 | Schlumberger Technology Corporation | Communication Connections for Wired Drill Pipe Joints |
US8985154B2 (en) | 2007-10-23 | 2015-03-24 | Fiberspar Corporation | Heated pipe and methods of transporting viscous fluid |
EP2334891A2 (en) * | 2008-09-25 | 2011-06-22 | Intelliserv International Holding, Ltd | Wired drill pipe having conductive end connections |
EP2334891A4 (en) * | 2008-09-25 | 2013-08-14 | Intelliserv Int Holding Ltd | Wired drill pipe having conductive end connections |
US7857644B2 (en) | 2008-09-25 | 2010-12-28 | Intelliserv, Llc | Wired drill pipe having conductive end connections |
WO2010085287A2 (en) | 2008-09-25 | 2010-07-29 | Intelliserv International Holding, Ltd | Wired drill pipe having conductive end connections |
US20100071188A1 (en) * | 2008-09-25 | 2010-03-25 | Raghu Madhavan | Wired drill pipe having conductive end connections |
EP3502408A1 (en) | 2008-09-25 | 2019-06-26 | Intelliserv International Holding, Ltd | Wired drill pipe having conductive end connections |
CN102165135A (en) * | 2008-09-30 | 2011-08-24 | 瓦姆钻杆钻具法国公司 | Instrumented drill string element |
US20100099835A1 (en) * | 2008-10-22 | 2010-04-22 | Stokes Casey D | Production of Vinylidene-Terminated and Sulfide-Terminated Telechelic Polyolefins Via Quenching with Disulfides |
US9127546B2 (en) | 2009-01-23 | 2015-09-08 | Fiberspar Coproation | Downhole fluid separation |
US8049506B2 (en) | 2009-02-26 | 2011-11-01 | Aquatic Company | Wired pipe with wireless joint transceiver |
WO2010102077A2 (en) | 2009-03-04 | 2010-09-10 | Intelliserv International Holding, Ltd | System and method of using a saver sub in a drilling system |
US20110101675A1 (en) * | 2009-11-04 | 2011-05-05 | National Coupling Compay, Inc. | Hydraulic Coupling Member with Dual Electrical Bonding Contacts |
US8955599B2 (en) | 2009-12-15 | 2015-02-17 | Fiberspar Corporation | System and methods for removing fluids from a subterranean well |
US9206676B2 (en) | 2009-12-15 | 2015-12-08 | Fiberspar Corporation | System and methods for removing fluids from a subterranean well |
US8439130B2 (en) | 2010-02-22 | 2013-05-14 | Schlumberger Technology Corporation | Method and apparatus for seismic data acquisition during drilling operations |
US20110203846A1 (en) * | 2010-02-22 | 2011-08-25 | Schlumberger Technology Corporation | Method and apparatus for seismic data acquisition during drilling operations |
US8668510B2 (en) | 2010-11-16 | 2014-03-11 | Vam Drilling France | Tubular component having an electrically insulated link portion with a dielectric defining an annular sealing surface |
US9890880B2 (en) | 2012-08-10 | 2018-02-13 | National Oilwell Varco, L.P. | Composite coiled tubing connectors |
US20150273586A1 (en) * | 2014-03-28 | 2015-10-01 | Baker Hughes Incorporated | Additive Manufacturing Process for Tubular with Embedded Electrical Conductors |
US10090624B1 (en) | 2018-01-03 | 2018-10-02 | Jianying Chu | Bottom hole assembly tool bus system |
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