CN210483536U - Well wall repairing tool - Google Patents
Well wall repairing tool Download PDFInfo
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- CN210483536U CN210483536U CN201920978930.2U CN201920978930U CN210483536U CN 210483536 U CN210483536 U CN 210483536U CN 201920978930 U CN201920978930 U CN 201920978930U CN 210483536 U CN210483536 U CN 210483536U
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- restorer
- connecting pipe
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Abstract
The utility model relates to a wall of a well repair instrument belongs to drilling equipment technical field. The utility model provides a pair of wall of a well repairing tool is connected through restorer and guide, when the wall of a well of needs to the reducing section of well is restoreed, because the external diameter of guide is less, guide can realize the guide effect through the reducing section of well and to the restorer, the restorer is at the repair in-process to the wall of a well, and the restorer is rotatory under the drive of the power equipment in the pit, and the wall of a well of the reducing section of well of cutting portion on the restorer cuts. Utilize the utility model provides a wall of a well repairing tool when carrying out reaming restoration to the wall of a well of the undergauge section of well, has avoided producing the engineering accident of new well on the next door of former well to improve the repairing effect to the wall of a well, and reduced the influence to the construction progress of well.
Description
Technical Field
The utility model relates to a wall of a well repair instrument belongs to drilling equipment technical field.
Background
In the drilling process of an oil and gas well, after a drill bit drills to a certain depth, because the soft rock strata such as mudstone and the like, the rock strata which are easy to expand when encountering water, and the rock strata such as broken zone rock strata and the like are unstable, the inner diameter of a certain section of formed well bore can shrink, or the well wall can collapse, so that the drilling rod is stuck, blocked and the like when being drilled, and even the original well bore is scrapped.
When the inner diameter of a borehole shrinks or the borehole wall collapses, high-pressure drilling is generally used for reaming, namely the process of lowering or lifting a drill string in a drilled borehole to trim the borehole wall while rotating so as to ensure that the borehole is unobstructed.
However, when continuous drilling is performed with a high weight on bit, the drill bit is likely to deviate from the original borehole and drill sideways, so that a new borehole is created near the original borehole. Namely, in the prior art, the repairing effect of the well hole is poor by directly carrying out reaming by using the drill bit, and meanwhile, the construction progress of the well hole is also influenced.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect among the prior art, the utility model provides a wall of a well repairing tool.
The utility model provides a pair of wall of a well repair instrument, include: the repairing device is characterized in that a cutting part is arranged on the outer peripheral wall of the repairing device; an introducer, the introducer first end connected at one end of the prosthesis, the introducer having an outer diameter smaller than the outer diameter of the prosthesis.
As one of the selectable technical solutions of the present invention, a first overflow channel is disposed inside the repairing device, and a second overflow channel coaxial with the first overflow channel is disposed inside the guiding device; the guide device comprises a guide device and is characterized in that a plurality of water chutes are arranged outside the guide device, the water chutes extend along the axial direction of the guide device, and the water chutes are uniformly arranged outside the guide device at intervals.
As one of the optional technical solutions of the present invention, the second end of the guiding device is hemispherical, and the outer diameter of the second end of the guiding device is gradually reduced along the direction deviating from the repairing device.
As one of the optional technical solutions of the present invention, a plurality of cutting portions are provided on the peripheral wall of the repairing device, and the cutting portions are spirally wound on the peripheral wall of the repairing device, and are plural the cutting portions are in the peripheral wall of the repairing device at uniform intervals.
As one of the optional technical solutions of the present invention, two adjacent grooves are formed between the cutting portions, and the cutting portions are provided with chamfers between the grooves.
As one of the optional technical solutions of the present invention, a plurality of teeth are provided on the outer wall of the cutting portion, and the teeth extend in the direction deviating from the axis of the prosthesis.
As one of the optional technical solutions of the present invention, the outer wall of the cutting portion is uniformly provided with a plurality of blind holes, and one end of the protruding tooth is connected to the inside of the blind holes.
As one of the selectable technical solutions of the present invention, the present invention further comprises a first connecting pipe and a second connecting pipe; the first connecting pipe is connected to one end of the restorer, which is far away from the guider, and the second connecting pipe is connected between the restorer and the guider; the first connecting pipe is provided with a first overflowing channel inside, the second connecting pipe is provided with a second overflowing channel inside, and the first overflowing channel and the second overflowing channel are coaxially arranged.
As one of the optional technical solutions of the present invention, the outer diameters of the first connecting pipe and the second connecting pipe are smaller than the outer diameter of the guiding device.
As one of the optional technical solutions of the present invention, the first connecting pipe, the repairing device, the second connecting pipe and the second connecting pipe are all connected by a screw thread.
The utility model provides a pair of wall of a well repairing tool is connected through restorer and guide, when the wall of a well of needs to the reducing section of well is restoreed, because the external diameter of guide is less, guide can realize the guide effect through the reducing section of well and to the restorer, the restorer is at the repair in-process to the wall of a well, and the restorer is rotatory under the drive of the power equipment in the pit, and the wall of a well of the reducing section of well of cutting portion on the restorer cuts. Utilize the utility model provides a wall of a well repairing tool when carrying out reaming restoration to the wall of a well of the undergauge section of well, has avoided producing the engineering accident of new well on the next door of former well to improve the repairing effect to the wall of a well, and reduced the influence to the construction progress of well.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic view of a first construction of a borehole wall repair tool according to the present embodiment;
fig. 2 is a schematic structural diagram of a repairing device in the borehole wall repairing tool provided by the embodiment;
fig. 3 is a schematic structural diagram of a guide device in the borehole wall repairing tool provided by the embodiment;
FIG. 4 is a schematic diagram of a second construction of the borehole wall repair tool provided in this embodiment;
FIG. 5 is an exploded view of a second configuration of the borehole wall repair tool provided in accordance with the present embodiment;
FIG. 6 is a cross-sectional view of the well wall repair tool of FIG. 4 along an axis as provided by the present embodiment.
Description of reference numerals:
1-a prosthetic device;
101-a cutting portion;
102-a first flow-through channel;
103-a groove;
104-a lobe;
2-an introducer;
201-a water chute;
202-a second flow-through channel;
3-a first connection pipe;
301-a third flow channel;
4-a second connecting tube;
401-fourth flow-through channel.
With the above figures, certain embodiments of the present invention have been shown and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The terms "upper" and "lower" are used to describe relative positions of the structures in the drawings, and are not used to limit the scope of the present invention, and the relative relationship between the structures may be changed or adjusted without substantial technical changes.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In addition, in the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, may be fixedly connected, detachably connected, or integrated; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the drilling process of an oil and gas well, after a drill bit drills to a certain depth, because the soft rock strata such as mudstone and the like, the rock strata which are easy to expand when encountering water, and the rock strata such as broken zone rock strata and the like are unstable, the inner diameter of a certain section of formed well bore can shrink, or the well wall can collapse, so that the drilling rod is stuck, blocked and the like when being drilled, and even the original well bore is scrapped.
When the inner diameter of a borehole shrinks or the borehole wall collapses, high-pressure drilling is generally used for reaming, namely the process of lowering or lifting a drill string in a drilled borehole to trim the borehole wall while rotating so as to ensure that the borehole is unobstructed.
However, when continuous drilling is performed with a high weight on bit, the drill bit is likely to deviate from the original borehole and drill sideways, so that a new borehole is created near the original borehole. Namely, in the prior art, the repairing effect of the well hole is poor by directly carrying out reaming by using the drill bit, and meanwhile, the construction progress of the well hole is also influenced.
In order to solve the above-mentioned technical problem who exists when utilizing the drill bit to carry out the reaming restoration to the wall of a well among the prior art, this embodiment provides a wall of a well repairing tool. The borehole wall repair tool provided by the present embodiment is described in terms of material selection, shape, structure, connection and matching relationship of the components, so that those skilled in the art can clearly and completely understand the technical solution provided by the present embodiment and can easily implement the technical solution based on the understanding.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the present embodiment provides a borehole wall repairing tool, including: a prosthetic device 1, wherein a cutting part 101 is arranged on the peripheral wall of the prosthetic device 1; the first end of the guide 2 is connected with one end of the restorer 1, and the outer diameter of the guide 2 is smaller than that of the restorer 1.
Illustratively, the borehole wall repairing tool provided by the embodiment mainly comprises a repairing device 1 and an guider 2, wherein the guider 2 is used for guiding and positioning the repairing device 1, so that a new borehole cannot be generated when the repairing device 1 repairs the borehole wall of an original borehole; the repairing device 1 is used for reaming and repairing the well wall of the well.
When the repairing device 1 provided by the embodiment works, the repairing device 1 needs to rotate under the driving of power equipment on the well, and the cutting part 101 on the repairing device 1 needs to scratch and repair the well wall of the well. Since the prosthetic device 1 needs to transmit the torque of the power equipment and to overcome the resistance of the well wall to the cutting portion 101. Therefore, the prosthesis 1 itself requires a certain torsional and compressive strength. As the main material of the prosthetic device 1 provided in the present embodiment, a hard metal material such as steel material can be used.
The structure of the cutting portion 101 of the prosthesis 1 according to the present embodiment may refer to the structure of the cutting portion of a drill bit such as a twist drill, a spade drill, a center drill, or a deep hole drill. However, the prosthetic device 1 of the present embodiment is also significantly different from the conventional drill bit. Conventional drill bits primarily include a tool shank and a cutting tip of the tool shank, wherein the cutting tip of the tool shank tip is the primary cutting site. The repairing device 1 provided by the embodiment has a different purpose from that of a conventional drill bit, the conventional drill bit is mainly used for generating a new drilled hole, and the repairing device 1 of the embodiment is mainly used for repairing an original well hole. Therefore, in order for the repairing tool 1 to achieve effective repairing of the wall of the borehole, the cutting portions 101 of the repairing tool 1 of the present embodiment are distributed on the outer peripheral wall of the repairing tool 1.
The structure of a conventional drill is described by taking a twist drill as an example, and the twist drill is mainly composed of a working portion and a shank portion. The working part is provided with two spiral grooves which are shaped like twist, and the diameter of the twist drill from the drill tip to the handle part is gradually reduced and is in an inverted cone shape. The spiral groove can be processed by milling, grinding, hot rolling or hot extrusion, the front end of the drill bit is sharpened to form a cutting part, and the general twist drill is made of high-speed steel.
The restoration part of the restorer 1 of the present embodiment may be a structure similar to that of a cutting blade on a drill bit, and a plurality of convex teeth 104 may be provided on the restorer 1 to cut the well wall.
The guide 2 of the embodiment is connected to one end of the repairing device 1, and the outer diameter of the guide 2 is required to be smaller than that of the repairing device 1, so that the guide 2 can smoothly pass through the reducing section of the well hole, and the guiding effect on the repairing device 1 is realized.
The introducer 2 of the present embodiment may be connected to the prosthesis 1 by welding, screwing, or the like. When the repairer 1 performs reaming repair on the well wall, a certain extrusion force is formed between the guider 2 and the well wall of the reducing section of the well hole, and in order to enable the guider 2 to smoothly pass through the reducing section of the well hole and reliably guide the repairer 1, the guider 2 in the embodiment can be cylindrical; the material of the guide 2 may be chosen to be a hard metallic material to ensure the strength and rigidity requirements of the guide 2.
The well wall repairing tool provided by the embodiment is characterized in that the repairing device 1 is connected with the guide device 2, when the well wall of the reducing section of the well hole needs to be repaired, the guide device 2 can guide the repairing device 1 through the reducing section of the well hole due to the fact that the outer diameter of the guide device 2 is small, the repairing device 1 rotates under the driving of power equipment on the well in the repairing process of the well wall, and the cutting portion 101 on the repairing device 1 cuts the well wall of the reducing section of the well hole. When the borehole wall repairing tool provided by the embodiment is used for reaming and repairing the borehole wall of the reducing section of the borehole, the engineering accident that a new borehole is generated beside the original borehole is avoided, so that the repairing effect on the borehole wall is improved, and the influence on the construction progress of the borehole is reduced.
As shown in fig. 1, 3 and 5, as one of the alternative embodiments of the present embodiment, a first flow passage 102 is provided inside the repairer 1, and a second flow passage 202 coaxial with the first flow passage 102 is provided inside the guider 2; the guide 2 is provided with a plurality of water chutes 201 on the outside, the water chutes 201 extend along the axial direction of the guide 2, and the plurality of water chutes 201 are arranged on the outside of the guide 2 at uniform intervals.
Illustratively, in order to improve the repairing effect of the borehole wall repairing tool provided by the embodiment on the borehole wall of the reduced section of the borehole, a first overflowing channel 102 and a second overflowing channel 202 are further coaxially arranged inside the repairing tool 1 and the guider 2 respectively. When the repairing tool provided by the embodiment is used for repairing the well wall of the borehole, high-pressure liquid such as drilling fluid can be provided to the first overflowing passage 102 and the second overflowing passage 202 through a pressure pump on the borehole, and the repairing effect on the well wall can also be achieved through the flushing function of the drilling fluid.
Drilling fluids are circulating flushing media used in the drilling of wells during drilling. The drilling fluid can be divided into clear water, slurry, clay-phase-free flushing fluid, emulsion, foam, compressed air and the like according to the composition. The mud is widely used drilling fluid and is mainly suitable for unstable rock strata of well walls, such as loose rock, crack development, easy collapse and block falling, water swelling and spalling, and the like.
In addition, the drilling fluid also has the following functions: cooling the drill bit, cleaning the well bottom and carrying out rock debris; lubricating the drilling tool; suspending rock debris when the drilling is stopped, protecting the well wall from collapse, balancing the formation pressure and pressing the high-pressure oil gas water layer. The circulation program of the drilling fluid in the well drilling comprises the following steps: drilling fluid tank, pump → surface, manifold → riser → water hose, faucet → inside of drill string → drill bit → outer annular space of drill string → well head, mud (drilling fluid) tank → drilling fluid purification equipment → drilling fluid tank.
Wherein a plurality of water chutes 201 arranged outside the guider 2 are used for forming a section of channel for returning the drilling fluid to the well.
As shown in fig. 1 and 3, as one of the alternative embodiments of the present embodiment, the second end of the introducer 2 is hemispherical, and the outer diameter of the second end of the introducer 2 is gradually reduced in a direction away from the prosthesis 1.
For example, in order to enable the guide 2 to smoothly pass through a reduced diameter section of a borehole, the second end of the guide 2 may be hemispherical, the hemispherical shape is smooth, which is beneficial for the guide 2 to enter or pass through the borehole, and the outer diameter of the second end of the guide 2 is gradually reduced along a direction departing from the restorer 1, that is, a part of the guide 2 with a smaller diameter enters the borehole first in the process of entering or passing through the borehole, so that the smoothness of the guide 2 entering the borehole is improved.
As shown in fig. 1 and 2, as one of alternative embodiments of the present embodiment, a plurality of cutting portions 101 are provided on the outer circumferential wall of the prosthesis 1, the plurality of cutting portions 101 are spirally wound on the outer circumferential wall of the prosthesis 1, and the plurality of cutting portions 101 are uniformly spaced on the outer circumferential wall of the prosthesis 1.
Exemplarily, a plurality of cutting portions 101 can be spirally wound on the peripheral wall of the restorer 1 of the embodiment, because the working principle of the restorer 1 is that the reaming restoration of the well wall of the well is realized by the cutting portions through the rotation of the restorer 1 around the axis of the restorer 1, and the total area of the cutting portions 101 can be reduced on the premise that the effective restoration of the well wall can be realized by the distribution mode of the cutting portions 101 on the restorer 1, thereby saving the manufacturing cost of the restorer 1.
As shown in fig. 1 and 2, as one of alternative embodiments of the present embodiment, a groove 103 is formed between two adjacent cutting portions 101, and a chamfer is provided between the cutting portion 101 and the groove 103.
Illustratively, the grooves 103 formed between two adjacent cutting portions 101 may be used for the passage of drilling fluid and drilling cuttings back uphole; a chamfer is arranged between the cutting part 101 and the groove 103, so that the cutting part 101 and the groove 103 are in smooth transition, stress concentration between the cutting part 101 and the groove 103 is avoided, and the service life of the repairing device 1 is influenced.
As shown in fig. 1 and 2, as one of alternative embodiments of the present embodiment, a plurality of teeth 104 are provided on the outer wall of the cutting portion 101, and the teeth 104 extend in a direction away from the axis of the prosthesis 1.
For example, the outer circumferential wall of the cutting part 101 of the present embodiment may be provided with a plurality of convex teeth 104, the convex teeth 104 may be alloy teeth, the material may be diamond, the shape of the convex teeth 104 may be conical or cylindrical, and the convex teeth 104 may cut the borehole wall of the borehole.
As an alternative embodiment of this embodiment, a plurality of blind holes are uniformly arranged on the outer wall of the cutting part 101, and one end of the convex tooth 104 is connected to the inside of the blind holes.
Illustratively, the teeth 104 may be welded to the outer wall of the cutting portion 101, or the teeth 104 may be integrally formed with the cutting portion 101. In addition, a plurality of blind holes can be formed in the outer wall of the cutting portion 101, one end of the convex tooth 104 is connected to the inside of the blind holes, the convex tooth 104 can be connected to the inside of the blind holes through threads, and the convex tooth can be bonded to the inside of the blind holes through metal bonding glue.
As shown in fig. 4 and 5, as one of the alternative embodiments of the present embodiment, a first connection pipe 3 and a second connection pipe 4 are further included; a first connecting pipe 3 is connected to one end of the restorer 1, which is far away from the guider 2, and a second connecting pipe 4 is connected between the restorer 1 and the guider 2; a third flow-through channel 301 is arranged in the first connecting pipe 3, a fourth flow-through channel 401 is arranged in the second connecting pipe 4, and the third flow-through channel 301 and the fourth flow-through channel 401 are arranged coaxially with the first flow-through channel 102 and the second flow-through channel 202.
Illustratively, the end of the prosthesis 1 facing away from the introducer 2 of the present embodiment may be further connected with a first connection pipe 3, i.e. the prosthesis 1 may be connected with an open hole string for transmitting power through the first connection pipe 3.
The second connecting pipe 4 can be connected between the prosthesis 1 and the introducer of the present embodiment, and the distance between the introducer 2 and the prosthesis 1 can be increased through the second connecting pipe 4, so that the introducer 2 can achieve a better guiding effect on the prosthesis 1.
As shown in fig. 4, as an alternative embodiment of the present embodiment, the outer diameters of the first connecting tube 3 and the second connecting tube 4 are smaller than the outer diameter of the introducer 2.
Illustratively, the first connecting pipe 3 and the second connecting pipe 4 only play a role in connection, and in the borehole, the outer diameters of the first connecting pipe 3 and the second connecting pipe 4 are small, which is beneficial for the borehole wall repairing tool of the embodiment to smoothly pass through the borehole as a whole. Therefore, the first and second connection tubes 3 and 4 may each have an outer diameter smaller than that of the introducer 2.
As an alternative embodiment of this embodiment, the first connection pipe 3, the prosthesis 1, the second connection pipe 4 and the second connection pipe 4 are all connected by threads.
Illustratively, the upper end of the first connection pipe 3 may be provided with an internal thread to be connected with a power transmitting open hole string; the lower end of the first connection pipe 3 may be provided with external threads to be connected with internal threads at the upper end of the prosthetic device 1.
The lower end of the restorer 1 can be provided with internal threads which are connected with external threads at the upper end of the second connecting pipe 4; the external thread at the lower end of the connection pipe may be coupled with the internal thread at the upper end of the introducer 2.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A borehole wall repair tool, comprising:
the repairing device is characterized in that a cutting part is arranged on the outer peripheral wall of the repairing device;
an introducer, the introducer first end connected at one end of the prosthesis, the introducer having an outer diameter smaller than the outer diameter of the prosthesis.
2. The borehole wall repair tool of claim 1, wherein:
a first overflowing channel is arranged in the restorer, and a second overflowing channel coaxial with the first overflowing channel is arranged in the guider;
the guide device comprises a guide device and is characterized in that a plurality of water chutes are arranged outside the guide device, the water chutes extend along the axial direction of the guide device, and the water chutes are uniformly arranged outside the guide device at intervals.
3. The borehole wall repair tool of claim 1, wherein:
the second end of the introducer is hemispherical and the outer diameter of the second end of the introducer gradually decreases in a direction away from the prosthesis.
4. The borehole wall repair tool of claim 1, wherein:
be provided with a plurality of cutting parts on the periphery wall of restorer, it is a plurality of the spiral winding of cutting part is established on the periphery wall of restorer, and is a plurality of the cutting part is in even interval setting on the periphery wall of restorer.
5. The borehole wall repair tool of claim 4, wherein:
a groove is formed between every two adjacent cutting parts, and a chamfer is arranged between each cutting part and the corresponding groove.
6. The borehole wall repair tool of claim 1, wherein:
the outer wall of the cutting part is provided with a plurality of convex teeth, and the convex teeth extend along the direction deviating from the axis of the repairing device.
7. The borehole wall repair tool of claim 6, wherein:
the outer wall of the cutting part is uniformly provided with a plurality of blind holes, and one end of the convex tooth is connected to the inner part of the blind holes.
8. The borehole wall repair tool of claim 2, wherein:
the device also comprises a first connecting pipe and a second connecting pipe;
the first connecting pipe is connected to one end of the restorer, which is far away from the guider, and the second connecting pipe is connected between the restorer and the guider;
the first connecting pipe is provided with a first overflowing channel inside, the second connecting pipe is provided with a second overflowing channel inside, and the first overflowing channel and the second overflowing channel are coaxially arranged.
9. The borehole wall repair tool of claim 8, wherein:
the first and second connection pipes each have an outer diameter smaller than an outer diameter of the introducer.
10. The borehole wall repair tool of claim 8, wherein:
the first connecting pipe, the restorer, the second connecting pipe and the second connecting pipe are all connected through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920978930.2U CN210483536U (en) | 2019-06-26 | 2019-06-26 | Well wall repairing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920978930.2U CN210483536U (en) | 2019-06-26 | 2019-06-26 | Well wall repairing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210483536U true CN210483536U (en) | 2020-05-08 |
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ID=70514920
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920978930.2U Active CN210483536U (en) | 2019-06-26 | 2019-06-26 | Well wall repairing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210483536U (en) |
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2019
- 2019-06-26 CN CN201920978930.2U patent/CN210483536U/en active Active
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