CN106812505B - Thin-wall expansion pipe device and operation method thereof - Google Patents
Thin-wall expansion pipe device and operation method thereof Download PDFInfo
- Publication number
- CN106812505B CN106812505B CN201710083641.1A CN201710083641A CN106812505B CN 106812505 B CN106812505 B CN 106812505B CN 201710083641 A CN201710083641 A CN 201710083641A CN 106812505 B CN106812505 B CN 106812505B
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- expansion
- hydraulic cylinder
- pipe
- slip
- cone
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 94
- 238000004873 anchoring Methods 0.000 claims abstract description 63
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/105—Expanding tools specially adapted therefor
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a thin-wall expansion pipe device and an operation method thereof, the method is applied to the technical field of well drilling completion and well repair in the petroleum industry. The device comprises an expansion pipe, an expansion cone, a hydraulic cylinder mechanism and an anchoring mechanism, wherein the hydraulic cylinder mechanism is arranged above the expansion cone, and the anchoring mechanism is arranged below the expansion cone; the hydraulic cylinder sleeve of the hydraulic cylinder mechanism is fixedly connected with the expansion cone; the expansion taper sleeve is in sliding connection outside a central tube of the hydraulic cylinder mechanism, the lower end of the central tube is connected with the anchoring mechanism, and the lower end of the central tube or the lower end of the anchoring mechanism connected with the central tube is closed; the bearing ring is arranged outside the upper end of the expansion pipe, the outer diameter of the bearing ring is larger than the inner diameter of the expansion pipe, and the bearing ring is sleeved outside the central pipe and fixedly connected with the central pipe. Because the device directly links the hydraulic cylinder device with the expansion cone, when the expansion pipe is longer, the center tube more than the hydraulic cylinder device can use the operation tubular column, has reduced manufacturing cost. Meanwhile, when the hydraulic cylinder device lifts the expansion cone to complete a stroke, the hydraulic cylinder device can be reset by lowering the operation pipe column, and the operation is convenient.
Description
Technical Field
The invention relates to the technical field of well drilling completion and well repair in petroleum industry, in particular to a thin-wall expansion pipe device and an operation method thereof.
Background
The physical expansion pipe technology developed in the 90 s of the last century plays an important role in the technical fields of drilling, completion and workover.
The original expansion pipe technology utilizes hydraulic pressure to push the expansion cone, and simultaneously, the lifting force of the drill rod to the expansion cone is overlapped to complete the expansion operation.
The Chinese patent, application number 201010106783.3 and application date 2010.02.03 disclose a device and a method for repairing damaged casing by using an expansion pipe, wherein the device is characterized in that a set of power cylinder is arranged at the upper part of the expansion pipe, an expansion cone is arranged at the lower part of the expansion pipe, a clamping and hanging positioning mechanism is arranged below the expansion cone, the upper part of the power cylinder of the device presses the expansion pipe, a central pipe of the power cylinder downwards pulls the clamping and hanging positioning mechanism, and the expansion cone is pulled upwards by the pulling force of the power cylinder to expand the expansion pipe. The clamping and hanging positioning mechanism can clamp the central tube unidirectionally, so that a downward upward thrust is provided for the expansion cone, and the requirement of upward lifting of multiple strokes of the power cylinder can be met.
The expansion pipe technology has the defects that a, the central rod is specially manufactured, and when the expansion pipe is longer, the central rod is correspondingly longer, and the manufacturing cost is higher. b. The hydraulic cylinder mechanism is difficult to reset, the ground operators are difficult to judge whether the hydraulic cylinder mechanism is reset or not, and the operation is inconvenient.
Disclosure of Invention
In order to solve the technical problems, the invention provides a thin-wall expansion pipe device which can reduce the manufacturing cost and is convenient to operate.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the thin-wall expansion pipe device comprises an expansion pipe, an expansion cone, a hydraulic cylinder mechanism and an anchoring mechanism, wherein the hydraulic cylinder mechanism is arranged above the expansion cone, and the anchoring mechanism is arranged below the expansion cone; the hydraulic cylinder sleeve of the hydraulic cylinder mechanism is fixedly connected with the expansion cone; the expansion taper sleeve is in sliding connection outside a central tube of the hydraulic cylinder mechanism, the lower end of the central tube is connected with the anchoring mechanism, and the lower end of the central tube or the lower end of the anchoring mechanism connected with the central tube is closed; the bearing ring is arranged outside the upper end of the expansion pipe, the outer diameter of the bearing ring is larger than the inner diameter of the expansion pipe, and the bearing ring is sleeved outside the central pipe and fixedly connected with the central pipe.
Preferably, the anchoring mechanism is a slip anchoring mechanism, and the slip anchoring mechanism is a T-shaped groove type slip anchoring mechanism. The slip anchoring mechanism can also be a slip friction block integrated slip anchoring mechanism.
Preferably, the anchoring mechanism may also be a hydraulic anchor anchoring mechanism.
The operation method of the thin-wall expansion pipe device comprises the operation steps of,
a. lowering the thin-wall expansion pipe device to a well casing fracture or an open hole inner well by using an operation pipe column;
b. the upper end of the operation pipe column is connected with a hydraulic pump on the ground;
c. starting a hydraulic pump to enable hydraulic pressure in a central tube of the thin-wall expansion tube device to rise, pushing an expansion cone to expand the expansion tube upwards, and enabling a hydraulic cylinder mechanism to finish an uplink stroke;
d. stopping the hydraulic pump, and removing hydraulic pressure in the central tube of the thin-wall expansion tube device;
e. lifting the operation pipe column to enable the hydraulic cylinder mechanism to ascend by one stroke;
f. repeating the steps c, d and e until the expansion operation of all expansion pipes is completed.
The invention has the technical advantages that the hydraulic cylinder device is directly connected with the expansion cone, when the expansion pipe is longer, the central pipe above the hydraulic cylinder device can use the operation pipe column, and the manufacturing cost is reduced. Meanwhile, when the hydraulic cylinder device lifts the expansion cone to complete a stroke, the hydraulic cylinder device can be reset by lowering the operation pipe column, and the operation is convenient.
Drawings
The invention, together with a further understanding of the many of its attendant advantages, will be best understood by reference to the following detailed description, when considered in conjunction with the accompanying drawings, which are included to provide a further understanding of the invention, and the accompanying drawings, illustrate and do not constitute a limitation on the invention, and wherein:
FIG. 1 is a schematic diagram of a thin-walled expansion pipe device, wherein the hydraulic cylinder mechanism is a primary hydraulic cylinder, and the anchoring mechanism is a slip anchoring mechanism.
FIG. 2 is a schematic structural view of a thin-walled expansion pipe device, wherein the hydraulic cylinder mechanism is a secondary hydraulic cylinder, and the anchoring mechanism is a slip anchoring mechanism.
FIG. 3 is a schematic structural view of a thin-walled expansion vessel device, with the anchoring mechanism shown as a hydraulic anchor.
FIG. 4 is a schematic structural view of a thin-walled expansion tube device illustrating the anchoring mechanism into the expansion tube.
Fig. 5 is a schematic illustration of the construction of a "T" groove-type slip anchoring mechanism.
FIG. 6 is a schematic illustration of a slip friction block integrated slip anchoring mechanism.
Fig. 7 is a schematic structural view of a hydraulic anchor.
Detailed Description
In the description of the present specification, the above-mentioned upper and lower positional relationships are the same as those shown in the drawings, and are also the positional relationships between the members when the tool of the present invention is applied to a vertical well.
As shown in fig. 1, the thin-walled expansion pipe device, the central pipe 1, the hydraulic cylinder jacket 4 and the piston 5 together form a hydraulic cylinder mechanism 20. The hydraulic cylinder mechanism 20 is characterized in that a hydraulic cylinder sleeve 4 and a piston 5 are arranged outside the central tube 1, wherein the piston 5 is fixedly and hermetically connected with the central tube 1, the hydraulic cylinder sleeve 4 is sleeved with the central tube 1 and forms a first sliding sealing surface, the hydraulic cylinder sleeve 4 is sleeved with the piston 5 and forms a second sliding sealing surface, the first sliding sealing surface and the second sliding sealing surface have diameter differences, and a liquid inlet 14 is arranged on the side wall of the central tube 1 between the hydraulic cylinder sleeve 4 and the piston 5;
an expansion cone 6 is arranged at the lower end of the expansion pipe 3, a hydraulic cylinder mechanism 20 is arranged in the expansion pipe above the expansion cone 6, and an anchoring mechanism 30 is arranged below the expansion cone 6.
The expansion cone 6 is sleeved outside the central tube 1 of the hydraulic cylinder mechanism 20 and can slide up and down to form sliding connection. The hydraulic cylinder sleeve 4 is fixedly connected with the expansion cone 6;
the lower end of the central tube 1 is fixedly connected with an anchoring mechanism 30.
The bearing ring 2 is arranged outside the upper end of the expansion pipe 3, the outer diameter of the bearing ring is larger than the inner diameter of the expansion pipe, and the bearing ring 2 is sleeved outside the central pipe 1 and fixedly connected with the central pipe.
In order to facilitate the discharge of liquid, a liquid outlet hole 13 may be provided in the side wall of the cylinder jacket 4 below the piston 5.
In order to ensure that sufficient hydraulic pressure is generated in the central tube, the lower end of the central tube should be closed, but it is of course also possible to close the lower central tube 12 of the anchoring means connected to the central tube.
The fixed connection described herein and elsewhere in this specification may be threaded or welded; the fixed and sealed connection can be a sealed threaded connection, such as petroleum oil pipe threads, a non-sealed threaded and sealed ring connection, or welding.
As shown in fig. 5, the anchoring mechanism 30 is a slip anchoring mechanism. The slip anchoring mechanism is a T-shaped groove type slip anchoring mechanism, is a commonly used anchoring mechanism on an underground 211 type or 221 type packer in an oil field, is also called a dovetail groove type slip anchoring mechanism and comprises a lower central pipe 12, an anchoring cone 7, a slip 8, a slip support 9, a spring 10 and a blocking cap 11, wherein the anchoring cone 7, the slip support 9, the spring 10 and the blocking cap 11 are sequentially sleeved outside the lower central pipe 12 from top to bottom, and the anchoring cone 7 and the blocking cap 11 are fixedly connected with the lower central pipe; the anchoring cone 7 and the slip support 9 are respectively provided with a T-shaped groove, and the slip 8 is arranged in the T-shaped groove. The spring 10 may be a disc spring or a cylindrical helical compression spring.
The slip anchoring mechanism may also be a slip friction block integrated slip anchoring mechanism, as shown in FIG. 6, which is another anchoring mechanism commonly used on downhole 211 or 221 packers in the oilfield. As shown in fig. 6, the slip friction block integrated slip anchoring mechanism includes a lower base pipe 12, a cone 61, friction slips 62, a snap ring 63, a small spring 64, a slip shoe 65, and a retainer ring 66. The cone 61, the slip collet 65 and the baffle ring 66 are sequentially sleeved outside the lower central tube 12 from top to bottom, the cone 61 and the baffle ring 66 are also fixedly connected with the lower central tube 12; the slip collet 65 is provided with a J-shaped annular groove with a cross section, the lower end of the friction slip 62 is arranged in the J-shaped annular groove, the small spring 64 is transversely arranged between the friction slip 62 and the slip collet 65, and the clamping ring 63 is sleeved on the periphery of the friction slip 62.
The anchoring mechanism 30 may also be a hydraulic anchor anchoring mechanism, as shown in fig. 3. The hydraulic anchor is one of the tools commonly used downhole in oil fields, as shown in fig. 7. When the hydraulic anchor anchoring mechanism is used, the hydraulic anchor should be closed at the lower part in order to allow the hydraulic cylinder mechanism and the hydraulic anchor to obtain hydraulic force at the same time.
Fig. 1 shows a single-stage hydraulic cylinder mechanism formed by a primary hydraulic cylinder sleeve and a primary piston, and the hydraulic cylinder mechanism can be a multi-stage hydraulic cylinder mechanism formed by a multi-stage hydraulic cylinder sleeve and a multi-stage piston. Referring to fig. 2, fig. 2 shows a secondary hydraulic cylinder mechanism, which includes a primary hydraulic cylinder mechanism 201 and a secondary hydraulic cylinder mechanism 202, wherein a secondary hydraulic cylinder sleeve is connected together, and other connection elements are the same as those of the single-stage hydraulic cylinder mechanism. The connection mode of the hydraulic cylinder mechanisms with more than three stages is the same as that of the hydraulic cylinder mechanisms with two stages.
As shown in fig. 1 and 4, the expansion cone is initially located under the expansion pipe, the hydraulic cylinder mechanism starts to pull the bearing ring downwards in the first stroke under the action of hydraulic pressure, the expansion cone is lifted up, and the bearing ring is clamped at the upper end of the expansion pipe, so that the expansion cone is pulled into the expansion pipe, and the diameter of the expansion pipe is expanded. Then, the working string is lifted up, the hydraulic cylinder mechanism is reset, and the second stroke is started. In the second stroke, the hydraulic cylinder mechanism pushes down the anchoring mechanism to anchor the anchoring mechanism on the inner wall of the expansion pipe to keep the anchoring mechanism motionless, and simultaneously lifts the expansion cone to expand the expansion pipe to finish the second stroke, and the second stroke is repeated until all expansion pipe operations are finished.
The thin-wall expansion pipe device is connected with the operation pipe column through the central pipe. The operation steps are as follows:
a. lowering the thin-wall expansion pipe device to a well casing fracture or an open hole inner well by using an operation pipe column;
b. the upper end of the operation pipe column is connected with a hydraulic pump on the ground;
c. starting a hydraulic pump to enable hydraulic pressure in a central tube of the thin-wall expansion tube device to rise, pushing an expansion cone to expand the expansion tube upwards, and enabling a hydraulic cylinder mechanism to finish an uplink stroke;
d. stopping the hydraulic pump, and removing hydraulic pressure in the central tube of the thin-wall expansion tube device;
e. lifting the operation pipe column to enable the hydraulic cylinder mechanism to ascend by one stroke;
f. repeating the steps c, d and e until the expansion operation of all expansion pipes is completed.
It will be apparent that many modifications and variations are possible within the scope of the invention, as will be apparent to those skilled in the art based upon the teachings herein.
Claims (9)
1. The thin-wall expansion pipe device comprises an expansion pipe (3), an expansion cone (6), a hydraulic cylinder mechanism (20) and an anchoring mechanism (30), and is characterized in that the hydraulic cylinder mechanism (20) is arranged above the expansion cone (6), and the anchoring mechanism (30) is arranged below the expansion cone (6); a liquid cylinder sleeve (4) of the liquid cylinder mechanism is fixedly connected with the expansion cone (6); the expansion cone (6) is sleeved outside the central tube (1) of the hydraulic cylinder mechanism and is in sliding connection, the lower end of the central tube (1) is connected with the anchoring mechanism (30), and the lower end of the central tube (1) or the lower end of the anchoring mechanism connected with the central tube is closed; the bearing ring (2) is arranged outside the upper end of the expansion pipe (3), the outer diameter of the bearing ring is larger than the inner diameter of the expansion pipe, and the bearing ring (2) is sleeved outside the central pipe (1) and fixedly connected with the central pipe; the hydraulic cylinder mechanism (20) is formed by a central tube (1), a hydraulic cylinder sleeve (4) and a piston (5), wherein the hydraulic cylinder sleeve (4) and the piston (5) are arranged outside the central tube (1), the piston (5) is fixedly and hermetically connected with the central tube (1), the hydraulic cylinder sleeve (4) is sleeved with the central tube (1) to form a first sliding sealing surface, the hydraulic cylinder sleeve (4) is sleeved with the piston (5) to form a second sliding sealing surface, the first sliding sealing surface and the second sliding sealing surface have a diameter difference, and a liquid inlet (14) is formed between the hydraulic cylinder sleeve (4) and the piston (5) on the side wall of the central tube (1).
2. A thin walled expansion pipe arrangement according to claim 1, characterized in that the anchoring means (30) are slip anchoring means.
3. The thin-wall expansion pipe device according to claim 2, wherein the slip anchoring mechanism is a T-shaped groove type slip anchoring mechanism and comprises a lower central pipe (12), an anchoring cone (7), slips (8), a slip support (9), a spring (10) and a blocking cap (11), the anchoring cone (7), the slip support (9), the spring (10) and the blocking cap (11) are sequentially sleeved outside the lower central pipe (12) from top to bottom, and the anchoring cone (7) and the blocking cap (11) are fixedly connected with the lower central pipe; the anchoring cone (7) and the slip support (9) are respectively provided with a T-shaped groove, and the slip (8) is arranged in the T-shaped groove.
4. A thin walled expansion tube device according to claim 3 characterized in that the spring (10) is a disc spring or a cylindrical helical compression spring.
5. The thin-wall expansion pipe device according to claim 2, wherein the slip anchoring mechanism is a slip friction block integrated slip anchoring mechanism and comprises a lower central pipe (12), a cone (61), a friction slip (62), a clamping ring (63), a small spring (64), a slip collet (65) and a baffle ring (66), the cone (61), the slip collet (65) and the baffle ring (66) are sequentially sleeved outside the lower central pipe (12) from top to bottom, and the cone (61) and the baffle ring (66) are fixedly connected with the lower central pipe; the slip collet (65) is provided with a J-shaped annular groove in cross section, the lower end of the friction slip (62) is arranged in the J-shaped annular groove, the small spring (64) is transversely arranged between the friction slip (62) and the slip collet (65), and the clamping ring (63) is sleeved on the periphery of the friction slip (62).
6. A thin walled expansion pipe arrangement according to claim 1, characterized in that the anchoring means (30) is a hydraulic anchor anchoring means.
7. A thin walled expansion pipe arrangement according to claim 1, characterized in that the hydraulic cylinder mechanism (20) is of two or more stages.
8. A method of operating a thin-walled expansion pipe arrangement, characterized in that it comprises the thin-walled expansion pipe arrangement of any of claims 1 to 7.
9. The method of claim 1 wherein the steps of a, lowering the thin-walled expansion vessel assembly to a casing fracture or open hole well with a string of tubing; b. the upper end of the operation pipe column is connected with a hydraulic pump on the ground; c. starting a hydraulic pump to enable hydraulic pressure in a central tube of the thin-wall expansion tube device to rise, pushing an expansion cone to expand the expansion tube upwards, and enabling a hydraulic cylinder mechanism to finish an uplink stroke; d. stopping the hydraulic pump, and removing hydraulic pressure in the central tube of the thin-wall expansion tube device; e. lifting the operation pipe column to enable the hydraulic cylinder mechanism to ascend by one stroke; f. repeating the steps c, d and e until the expansion operation of all expansion pipes is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710083641.1A CN106812505B (en) | 2017-02-16 | 2017-02-16 | Thin-wall expansion pipe device and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710083641.1A CN106812505B (en) | 2017-02-16 | 2017-02-16 | Thin-wall expansion pipe device and operation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106812505A CN106812505A (en) | 2017-06-09 |
| CN106812505B true CN106812505B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710083641.1A Active CN106812505B (en) | 2017-02-16 | 2017-02-16 | Thin-wall expansion pipe device and operation method thereof |
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| CN (1) | CN106812505B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288573A (en) * | 2017-07-18 | 2017-10-24 | 中国石油化工股份有限公司 | Automatic hydraulic expands guard system and its operating method |
| CN111577218B (en) * | 2020-04-28 | 2020-12-01 | 大庆长垣能源科技有限公司 | Short-radius and ultrashort-radius horizontal well completion process |
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| Publication number | Publication date |
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| CN106812505A (en) | 2017-06-09 |
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