CN115853429A - Gas drilling and well completion integrated tool, pipe column and method - Google Patents
Gas drilling and well completion integrated tool, pipe column and method Download PDFInfo
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- CN115853429A CN115853429A CN202211396386.3A CN202211396386A CN115853429A CN 115853429 A CN115853429 A CN 115853429A CN 202211396386 A CN202211396386 A CN 202211396386A CN 115853429 A CN115853429 A CN 115853429A
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Abstract
The invention provides a gas drilling and completion integrated tool, a pipe column and a method, which relate to the technical field of petroleum, natural gas and geothermal resource drilling, and the gas drilling and completion integrated tool comprises: the tool body is cylindrical and is provided with an accommodating cavity which is communicated up and down; the separation mechanism is sleeved outside the tool body and can radially expand; the setting mechanism comprises a sliding sleeve and a ball, the sliding sleeve is cylindrical and penetrates through the accommodating cavity, and the ball can push the sliding sleeve to move so as to expand the separation mechanism; the sliding sleeve has the maximum binding force on the shot, and the shot is separated from the sliding sleeve after the maximum binding force is exceeded; the side wall of the tool body is provided with a first through hole for installing a rupture disc, the first through hole is located below the setting mechanism, the rupture disc seals the first through hole, the rupture disc has the maximum bearing pressure, and the rupture disc is ruptured when the rupture disc exceeds the maximum bearing pressure. The invention can complete the well completion operation without lifting the drill string and lowering the well completion pipe string after drilling to the designed well depth.
Description
Technical Field
The invention relates to the technical field of petroleum, natural gas and geothermal resource drilling, in particular to a gas drilling and well completion integrated tool, a pipe column and a method.
Background
Gas drilling technology is a drilling process in which gas is used as a circulating medium. After the well is drilled to a target layer, the shaft and the stratum are in an underbalanced state, the shaft pressure is too high due to large stratum gas production, the risk of complex accidents such as blowout and the like in the conventional process of tripping under pressure and tubing completion operation is high, and even well completion operation cannot be carried out.
There are also techniques for integrating drilling and completion, but none completely address the problem of blowouts during completion operations. For example, a drilling string and drilling completion integration method (CN 111119747B) proposes a drilling string comprising a drill pipe and an anti-gas invasion device arranged on the drill pipe, but the method needs to lift the upper drill pipe after drilling to a target layer, and does not solve the fundamental problem that the drilling string is difficult to lift under pressure after drilling a high-pressure well; a drilling casing and a large-borehole multilateral well rapid drilling and completion method (CN 109236186B) adopt a drilling casing drilling technology, and the drilling process and casing running are completed synchronously, but the invention does not effectively establish a communication channel between a production zone and a borehole. Through the search and discovery of the prior technical patent documents at home and abroad, no patent related to the gas drilling and well completion integrated tool and method which completely solve the problem exists at present.
In view of the above, the present inventors have designed a gas drilling and completion integrated tool, a pipe string and a method through repeated experiments according to production design experiences in this field and related fields for many years, so as to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide an integrated tool, a pipe column and a method for gas drilling and well completion, which can complete well completion operation without lifting a drill column and lowering a well completion pipe column after drilling to a designed well depth.
In order to achieve the above object, the present invention provides an integrated tool for gas drilling and completion, wherein the integrated tool for gas drilling and completion comprises:
the tool body is cylindrical and is provided with an accommodating cavity which is communicated up and down;
the separation mechanism is sleeved outside the tool body and can expand along the radial direction of the tool body;
the setting mechanism comprises a sliding sleeve and a ball, the sliding sleeve is cylindrical and penetrates through the accommodating cavity, and the ball can push the sliding sleeve to move so as to expand the separation mechanism; the sliding sleeve has the maximum binding force on the shot, and after the maximum binding force is exceeded, the shot is separated from the sliding sleeve;
the side wall of the tool body is provided with a first through hole for mounting the rupture disc, the first through hole is located below the setting mechanism, the rupture disc seals the first through hole, the rupture disc has the maximum bearing pressure, and the rupture disc is ruptured when the maximum bearing pressure is exceeded.
The invention provides a gas drilling and completion integrated pipe column, which comprises a gas drill string, a gas drill bit and more than one gas drilling and completion integrated tool, wherein the more than one gas drilling and completion integrated tool is connected in series between the gas drill string and the gas drill bit.
The invention also provides a gas drilling and completion integrated method, wherein the gas drilling and completion integrated pipe column is put into the underground, a gas medium flows to the gas drill bit through the gas drill column and the gas drilling and completion integrated tool and drives the gas drill bit to carry out drilling operation, after the gas drill bit drills to a target layer, the ball is thrown into the gas drilling and completion integrated pipe column, the ball pushes the sliding sleeve to move so as to expand the separation mechanism, the separation mechanism is sealed in the underground casing, when the injection pressure of the gas medium exceeds the maximum binding force, the ball is separated from the sliding sleeve, the gas medium is continuously injected, when the pressure of the gas medium exceeds the maximum bearing force, the rupture disc is ruptured, and the gas medium is communicated with an oil jacket annulus through the first through hole.
Compared with the prior art, the invention has the following characteristics and advantages:
the invention provides an integrated tool, a pipe column and a method for gas drilling and well completion, which are different from a conventional drilling method, namely the drilling and the well completion are two independent links, a drill column (tripping) and a well completion pipe column do not need to be lifted up after the drilling is carried out to the designed well depth, the whole tool and the pipe column during drilling are fully utilized, the non-production time in the process of lifting up and lowering down the drill column (tripping) is avoided, the well building period is shortened, the occurrence of complex downhole accidents such as drilling sticking and the like is avoided, the drilling efficiency is improved, the comprehensive operation cost is reduced, and a new technology is provided for the production of gas drilling high-pressure wells.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case.
FIG. 1 is a schematic diagram of a gas drilling and completion integrated pipe string drilling system according to the present invention;
FIG. 2 is a schematic diagram of a gas drilling and completion integrated tubular string completion process of the present invention;
FIG. 3 is a schematic structural section view of an integrated gas drilling and completion tool of the present invention (before activation);
fig. 4 is a schematic structural section view of an integrated gas drilling and completion tool (activation process) according to the present invention.
Description of the reference numerals
100. A gas drilling and completion integrated tool; 10. A tool body;
11. an accommodating cavity; 12. A first through hole;
13. a second through hole; 14. A limiting structure;
15. a female buckle; 16. A male buckle;
20. a separation mechanism; 21. Expanding the packer;
22. a pressure-guiding one-way valve; 30. A setting mechanism;
31. a sliding sleeve; 32. Throwing a ball;
40. a rupture disc;
200. a gas drill string; 300. A gas drill bit;
400. surface gas drilling equipment; 500. A Christmas tree.
Detailed Description
The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and should not be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention.
As shown in fig. 1 to 4, the present invention provides an integrated gas drilling and completion tool 100, the integrated gas drilling and completion tool 100 includes a tool body 10, a separation mechanism 20, a setting mechanism 30 and a rupture disk 40, wherein the tool body 10 is cylindrical and has a receiving cavity 11 penetrating from top to bottom; the separating mechanism 20 is sleeved outside the tool body 10 and can expand along the radial direction of the tool body 10; the setting mechanism 30 comprises a sliding sleeve 31 and a ball 32, the sliding sleeve 31 is cylindrical and penetrates through the accommodating cavity 11, and the ball 32 can push the sliding sleeve 31 to move so as to expand the separation mechanism 20; the sliding sleeve 31 has the maximum binding force on the shot 32, and after the maximum binding force is exceeded, the shot 32 is separated from the sliding sleeve 31; the side wall of the tool body 10 is provided with a first through hole 12 for installing a rupture disk 40, the first through hole 12 is located below the setting mechanism 30, the rupture disk 40 seals the first through hole 12, the rupture disk 40 has the maximum bearing pressure, and the rupture disk 40 ruptures when the maximum bearing pressure is exceeded.
The invention also provides a gas drilling and completion integrated pipe column, which comprises a gas drill string 200, a gas drill bit 300 and more than one gas drilling and completion integrated tool 100, wherein the more than one gas drilling and completion integrated tool 100 is connected in series between the gas drill string 200 and the gas drill bit 300.
The invention also provides a gas drilling and completion integrated method, the gas drilling and completion integrated pipe column is put into the well, the gas medium flows to the gas drill bit 300 through the gas drill string 200 and the gas drilling and completion integrated tool 100 and drives the gas drill bit 300 to carry out drilling operation, after the gas drill bit 300 drills to a target layer, the pitching ball 32 is thrown into the gas drilling and completion integrated pipe column, the pitching ball 32 blocks the accommodating cavity 11 and pushes the sliding sleeve 31 to move so as to expand the separating mechanism 20, the separating mechanism 20 is seated in the underground casing 400, when the injection pressure of the gas medium exceeds the maximum binding force, the pitching ball 32 is separated from the sliding sleeve 31 and continues to inject the gas medium, when the pressure of the gas medium exceeds the maximum bearing force, the rupture disc 40 is ruptured, and the gas medium is communicated with the oil jacket annular space through the first through hole 12.
According to the integrated tool, the pipe column and the method for gas drilling and well completion, two independent links of drilling and well completion can be completed by one time of the pipe column, a drill column (tripping) and a well completion pipe column do not need to be lifted and lowered after the drilling is carried out to the designed well depth, the whole tool and the pipe column during drilling are fully utilized, the non-production time in the lifting and lowering (tripping) process of the drill column is avoided, the well building period is shortened, the occurrence of complex downhole accidents such as drilling blockage and the like is avoided, the drilling efficiency is improved, and the comprehensive operation cost is reduced.
In the gas drilling and completion integrated tool 100 provided by the invention, the accommodating cavity 11 which is vertically communicated with the tool body 10 is used as a circulation channel of a gas medium in a drilling link, and the gas medium flows to the gas drill bit 300 through the gas drill string 200 and the accommodating cavity 11 so as to drive the gas drill bit 300 to perform drilling operation; when the well completion operation is needed, the separation mechanism 20 is expanded through the pitching 32 to separate the ring space, and then the rupture disk 40 is ruptured through pressurization to communicate the accommodating cavity 11 with the ring space, so that a communication channel between the accommodating cavity and the production zone is established, and the well completion operation is realized.
In an optional embodiment of the present invention, a plurality of gas drilling and completion integrated tools 100 are connected in series between the gas drill string 200 and the gas drill bit 300, and the sliding sleeves 31 of the plurality of gas drilling and completion integrated tools 100 can be opened by the pitching balls 32 having the same diameter, so as to realize layered setting of the plurality of gas drilling and completion integrated tools 100, and further realize layered production, and subsequently, the requirements for reservoir transformation of a horizontal well section multi-reservoir can also be met, and the present invention has the advantages of simple structure and convenient installation and construction.
In an alternative embodiment of the present invention, the separating mechanism 20 includes an expanding packer 21 and a pressure-guiding check valve 22, the expanding packer 21 is sleeved outside the tool body 10, the tool body 10 is opened with a second through hole 13 for inflating the expanding packer 21, the pressure-guiding check valve 22 is installed in the second through hole 13, and the pressure-guiding check valve 22 only allows the gas to flow to the expanding packer 21.
In an alternative example of this embodiment, the expansion packer 21 is an annular structure capable of expanding in the radial direction, and is located at the radially outermost side of the tool body 10, and the radially outer side thereof is a ring space (annular space), and the expansion packer 21 is communicated with the pressure-guiding check valve 22, and the expansion packer 21 is inflated by the pressure-guiding check valve 22 so that the expansion packer 21 expands radially to partition the ring space.
In an alternative example of this embodiment, the expanded packer 21 has an activation pressure that is less than the maximum binding force of the sliding sleeve 31 against the ball 32 to prevent the expanded packer 21 from being uninflated and the ball 32 from disengaging from the sliding sleeve 31 to ensure that the expanded packer 21 can successfully seal the annulus space.
Preferably, the activation pressure of the expanded packer 21 is the primary pressure P 1 。
In an alternative example, the expanded spacer 21 is a multi-stage expanded spacer.
In an alternative example of this embodiment, the pressure-guiding check valve 22 has a radially inner side provided with a reducing sliding sleeve 31 and a radially outer side provided with an expanding packing body 21, when the pressure-guiding check valve 22 is closed (i.e. when the sliding sleeve 31 closes the second through hole 13), no gas medium flows inside the pressure-guiding check valve 22, and when the pressure-guiding check valve 22 is opened, a part of the gas medium in the accommodating cavity 11 flows to the expanding packing body 21 through the pressure-guiding check valve 22, so as to realize radial expansion of the expanding packing body 21. Because the pressure-guiding one-way valve 22 is a one-way valve that only allows the gas medium in the accommodating cavity 11 to flow to the expansion packer 21, the gas medium can be prevented from flowing back to the accommodating cavity 11, and the sealing effect of the expanded expansion packer 21 is ensured.
In an alternative example of this embodiment, the initial position of the sliding sleeve 31 closes the second through hole 13, and the second through hole 13 is communicated with the accommodating cavity 11 after the sliding sleeve 31 slides downwards. Specifically, the initial position of the sliding sleeve 31 is located on the radial inner side of the pressure-guiding check valve 22, which prevents the gas medium in the pressure-guiding check valve 22 from flowing through, after the sliding sleeve 31 slides, the pressure-guiding check valve 22 is opened, and a part of the gas medium flowing from the gas drill string 200 into the accommodating cavity 11 flows through the pressure-guiding check valve 22 to the expansion packer 21.
In an alternative example, the inner wall of the tool body 10 is provided with a limiting structure 14 for preventing the sliding sleeve 31 from falling off, and the limiting structure 14 is located between the first through hole 12 and the second through hole 13. By adopting the structure, when the ball 32 pushes the sliding sleeve 31 to move downwards and the first through hole 12 is not closed, the limiting structure 14 can limit the sliding sleeve 31 to continuously slide downwards.
Preferably, the limiting structure 14 is a slot opened inside the tool body 10. The sliding sleeve 31 slides up and down in the clamping groove, and the inner wall surface at the bottom of the clamping groove is used for clamping the sliding sleeve 31 to prevent the sliding sleeve 31 from continuing to move after the pressure-guiding one-way valve 22 is opened.
Preferably, the maximum restraining force is the secondary pressure P 2 When the pressure in the accommodating cavity 11 continuously rises until the secondary pressure P 2 In the process, the ball 32 can break through the constraint of the sliding sleeve 31 and move downwards continuously, so that the accommodating cavity 11 is restored to a through state.
In an alternative example of this embodiment, the sliding sleeve 31 is a reducing sliding sleeve.
In an alternative embodiment of the invention, the rupture disk 40 has a rupture disk body and a ceramic structural protective sheath disposed outside the rupture disk body.
Preferably, the maximum bearing pressure of the ceramic protective sheath is the maximum bearing pressure of the rupture disk 40, and the maximum bearing pressure is the third-level pressure P 3 。
In an alternative example, the rupture disk 40 is located at the outermost side of the first through hole 12 when the pressure of the gas medium inside the accommodating chamber 11 reaches P 3 The ceramic structure protective sleeve is broken, and the accommodating cavity 11 is communicated with the ring sleeve space (annular space).
In an alternative embodiment of the present invention, the tool body 10 is provided at upper and lower ends thereof with a box 15 and a pin 16, respectively, for connecting the gas drill string 200 and the gas drill bit 300.
The implementation of the integrated gas drilling and completion tool 100, the string and the method according to the present invention will now be described in detail with reference to an embodiment:
as shown in fig. 1, during gas drilling, the integrated gas drilling and completion tool 100 is run along with the integrated gas drilling and completion string, and the integrated gas drilling and completion tool 100 is in an initial inactivated state. In the drilling process by taking gas as a medium, a plurality of gas drilling and completion integrated tools 100 are connected between a gas drill string 100 and a gas drill bit 300 through upper and lower threads, the gas medium flows into the accommodating cavity 11 of the gas drilling and completion integrated tool 100 through the gas drill string 200, then flows into the accommodating cavity 11 of the next stage through the accommodating cavity 11, and finally flows to the gas drill bit 300, and the ground gas drilling equipment 400 provides power for the whole drilling system.
As shown in fig. 2, when the well is completed to the target zone, the ball 32 pushes the sliding sleeve 31 to slide until the limiting structure 14, at this time, the limiting structure 14 limits the ball 32 and the sliding sleeve 31 to continue moving, the pressure-guiding check valve 22 is exposed, the gas medium flowing through the accommodating cavity 11 flows into the expansion packer 21 through the one-way pressure-guiding valve 22, a pressure-holding cavity is formed between the fluid inlet end of the accommodating cavity 11 and the ball 32, the pressure is gradually increased along with the flowing pressure of the gas medium until reaching the expansion starting pressure of the expansion packer 21, i.e. the primary pressure P 1 The expansion packer 21 radially expands into an annular structure, packing the annulus space between the gas drill string 200 and the wellbore. With the gradual rise of the injection pressure of the gas medium, when the pressure in the accommodating cavity 11 continuously rises until the secondary pressure P 2 In this case, the ball 32 can break the sliding sleeve 31 and continue to move along the accommodating cavity 11. When the internal pressure of the accommodating cavity 11 reaches the three-level pressure P of the ceramic structure protective sleeve outside the rupture disk 40 3 And the ceramic structure protective sleeve structure outside the rupture disk 40 is ruptured to realize the communication between the accommodating cavity 11 and the annular space, establish a communication channel between the interior of the pipe column and a production layer and realize the layered mining. Finally, the gas drilling completion integrated string is suspended downhole by the tree 500.
According to the gas drilling and well completion integrated tool 100, the pipe column and the method, when gas drilling is carried out, the gas drill column 200 with the preset multi-stage gas drilling and well completion integrated tool 100 is sent into a shaft, the sliding sleeves 31 of multiple intervals can be opened through the pitching balls 32 with the same diameter, layered exploitation is achieved, the requirement for reservoir transformation of multiple oil layers of a horizontal well section can be met subsequently, the structure is simple, and installation and construction are convenient.
The present invention is not limited to the above embodiments, and in particular, various features described in different embodiments can be arbitrarily combined with each other to form other embodiments, and the features are understood to be applicable to any embodiment except the explicitly opposite descriptions, and are not limited to the described embodiments.
Claims (10)
1. An integrated gas drilling and completion tool, comprising:
the tool body is cylindrical and is provided with an accommodating cavity which is communicated up and down;
the separation mechanism is sleeved outside the tool body and can expand along the radial direction of the tool body;
the setting mechanism comprises a sliding sleeve and a ball, the sliding sleeve is cylindrical and penetrates through the accommodating cavity, and the ball can push the sliding sleeve to move so as to expand the separation mechanism; the sliding sleeve has the maximum binding force on the shot, and after the maximum binding force is exceeded, the shot is separated from the sliding sleeve;
the side wall of the tool body is provided with a first through hole for mounting the rupture disc, the first through hole is located below the setting mechanism, the rupture disc seals the first through hole, the rupture disc has the maximum bearing pressure, and the rupture disc is ruptured when the maximum bearing pressure is exceeded.
2. The gas drilling and completion integrated tool of claim 1, wherein the separation mechanism comprises an expansion packer and a pressure-guiding check valve, the expansion packer is sleeved outside the tool body, a second through hole for inflating the expansion packer is formed in the tool body, the pressure-guiding check valve is installed in the second through hole, and the pressure-guiding check valve only allows gas to flow to the expansion packer.
3. The gas drilling and completion integrated tool of claim 2, wherein the initial position of the sliding sleeve closes the second through hole, and the second through hole is communicated with the accommodating cavity after the sliding sleeve slides downwards.
4. The gas drilling and completion integrated tool of claim 3, wherein the inner wall of the tool body is provided with a limiting structure for preventing the sliding sleeve from falling off, and the limiting structure is positioned between the first through hole and the second through hole.
5. The tool of claim 4, wherein the stop structure is a slot formed in the tool body.
6. The gas drilling completion integration tool of claim 2, wherein the expansion packer has an activation pressure that is less than the maximum binding force of the sliding sleeve to the ball.
7. The integrated gas drilling and completion tool of claim 1, wherein the sliding sleeve is a reducing sliding sleeve.
8. The integrated gas drilling and completion tool of claim 1 wherein the rupture disc has a rupture disc body and a ceramic structural protective sheath disposed outside the rupture disc body.
9. A gas drilling and completion integrated string, comprising a gas drill string, a gas drill bit and one or more gas drilling and completion integrated tools according to any one of claims 1 to 8, wherein one or more of the gas drilling and completion integrated tools are connected in series between the gas drill string and the gas drill bit.
10. A method for integrating gas drilling and completion, characterized in that the gas drilling and completion integration string of claim 9 is run into the well, a gas medium flows to the gas drill bit through the gas drill string and the gas drilling and completion integration tool and drives the gas drill bit to perform drilling operation, after the gas drill bit drills to a target layer, the ball is thrown into the gas drilling and completion integration string, the ball pushes the sliding sleeve to move so as to expand the separation mechanism, the separation mechanism is seated in the well casing, after the injection pressure of the gas medium exceeds the maximum confining force, the ball is separated from the sliding sleeve, the gas medium is continuously injected, after the pressure of the gas medium exceeds the maximum bearing force, the rupture disk is ruptured, and the gas medium is communicated with the oil casing annulus through the first through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211396386.3A CN115853429A (en) | 2022-11-09 | 2022-11-09 | Gas drilling and well completion integrated tool, pipe column and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211396386.3A CN115853429A (en) | 2022-11-09 | 2022-11-09 | Gas drilling and well completion integrated tool, pipe column and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115853429A true CN115853429A (en) | 2023-03-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211396386.3A Pending CN115853429A (en) | 2022-11-09 | 2022-11-09 | Gas drilling and well completion integrated tool, pipe column and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115853429A (en) |
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2022
- 2022-11-09 CN CN202211396386.3A patent/CN115853429A/en active Pending
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