CN107178332A - Integral type thin-walled expansion tube and preparation method thereof and application method - Google Patents
Integral type thin-walled expansion tube and preparation method thereof and application method Download PDFInfo
- Publication number
- CN107178332A CN107178332A CN201710474874.4A CN201710474874A CN107178332A CN 107178332 A CN107178332 A CN 107178332A CN 201710474874 A CN201710474874 A CN 201710474874A CN 107178332 A CN107178332 A CN 107178332A
- Authority
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- China
- Prior art keywords
- integral type
- type thin
- expansion tube
- walled
- sealing ring
- Prior art date
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 20
- 238000003801 milling Methods 0.000 claims description 6
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 3
- 238000005987 sulfurization reaction Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- -1 tungsten carbides Chemical class 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000000725 suspension Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/10—Reconditioning of well casings, e.g. straightening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
- C08K3/14—Carbides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Abstract
The invention discloses a kind of integral type thin-walled expansion tube and preparation method thereof and application method, a kind of integral type thin-walled expansion tube, including body and hydrogenated nitrile-butadiene rubber sealing ring；Body is divided into two sections, and the internal diameter of first paragraph is less than the external diameter of expansion cone, and the internal diameter of second segment is more than the external diameter of expansion cone；Multiple annular boss are formed with the first paragraph of body；It is arranged with multiple annular grooves on annular boss in parallel；Hydrogenated nitrile-butadiene rubber sealing ring is arranged in annular groove and in combination is integrated.The integral type thin-walled expansion tube efficiently solves go into the well during the problem of sealing ring comes off caused by the collision between the borehole wall and sealing ring, while without welding, it is to avoid the heat affecting that pad is produced to body；Preparation method is simple, it is easy to operate.
Description
Technical field
The invention belongs to oil-gas field development technical field, more particularly to a kind of integral type thin-walled expansion tube and its preparation side
Method and application method.
Background technology
Currently in casing repairing expandable casing patching operation, the expansion tube Sealing Technology generally used hangs close for rubber ring
Envelope and soft metal ring two kinds of sealing expansion tube of suspension.There are some shortcomings to varying degrees in both technologies：Because rubber is close
Seal ring is generally vulcanized by specific technique or is pasted onto using fluid sealant on the outer tube wall of expansion tube, and with expansion tube body not
Integrative-structure, during going into the well because the collision between the borehole wall and sealing ring can caused by sealing ring come off.It is embedding using stainless steel
The soft metals such as weldering, copper surfacing and copper ring scarf welded suspension Sealing Technology, then easily cause heat affecting to sealing ring and expansion tube body,
The problem of bulbs of pressure increase when occurring proceeding to welding region in expansion process, because of pipe plastic deformation caused by heat affecting
Ability declines, and also resulting in the sealing ring after expansion can not effectively subsidize on casing wall to be subsidized, and makes sealing property up to not
To index.In addition, again because of the structure not being had a style of one's own between two class sealing rings and expansion tube body, as tail tube hanging
When, it is easy to occur pulling phenomenon in load bearing process.
CN201410136294.0, a kind of entitled expansion tube, CN201210450508.2, entitled expansion tube, this part
Rubber ring suspension Sealing Technology is disclosed in application, but because of touching between the borehole wall and sealing ring during still failing to going into the well
The problem of rubber seal ring for hitting and causing comes off proposes effective solution.CN201020258944.6, entitled one kind
The suspension sealing structure and CN201220488619.8 of expansion tube copper ring scarf welded, entitled high temperature resistant bimetallic expand seal of tube knot
Structure, employed in two pieces application soft metal suspension Sealing Technology, but also not in flexible metal sealing washer welding process to close
The problem of seal ring, heat affecting of expansion tube body, proposes effective solution.In addition, the above-mentioned two classes suspension equal nothing of Sealing Technology
When method solves it as tail tube hanging, the sealing ring occurred in load bearing process pulls problem.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of integral type thin-walled expansion tube and preparation method thereof and used
Method, the integral type thin-walled expansion tube uses integral structure, efficiently solves during going into the well because between the borehole wall and sealing ring
Collision cause the problem of sealing ring comes off, while without welding, it is to avoid the heat affecting that pad is produced to body；Preparation side
Method is simple, it is easy to operate.
Therefore, technical scheme is as follows：
A kind of integral type thin-walled expansion tube, including body and hydrogenated nitrile-butadiene rubber sealing ring；The body is divided into two sections,
One section of internal diameter is less than the external diameter of expansion cone, and the internal diameter of second segment is more than the external diameter of expansion cone；Shape on the first paragraph of the body
Into there is multiple annular boss；It is arranged with multiple annular grooves on the annular boss in parallel；The hydrogenated nitrile-butadiene rubber sealing ring
It is arranged in the annular groove and in combination is integrated.
Further, nano zine oxide, nanometer tungsten carbide and nanometer molybdenum sulfide are contained in the hydrogenated nitrile-butadiene rubber sealing ring；
It is preferred that, 1~1.5wt.% nano zine oxide+0.2~0.5wt.% nano silicon carbides are contained in the hydrogenated nitrile-butadiene rubber sealing ring
Tungsten+0.2~0.6wt.% nanometer molybdenum sulfide.
Further, the annular boss edge chamfer, preferably chamfering are 10~15 °.
Further, the spacing between adjacent two annular boss is 0.3~1.5m.The group number of annular boss, layout and adjacent
Depending on the spacing of twice boss damages the physical length of section regarding underground Tao Sundian positions and set.
Further, the width of the annular groove is 1~1.5mm, and depth is 1~2.5mm, between adjacent two groove between
Away from for 10~20mm.
Specifically, the wall thickness of body is 10~12mm.
A kind of preparation method of integral type thin-walled expansion tube, comprises the following steps：
1) one section that diameter is more than former body is extruded in body one end cold punching, as second segment, for being used as expansion cone
Emission cavity；Remaining body is first paragraph；
2) get on the bus in the first paragraph of the body and cut out multigroup annular boss；
3) parallel turning goes out a plurality of annular groove on the annular boss；
4) unvulcanized hydrogenated nitrile-butadiene rubber sealing ring is respectively mounted in annular groove, sulfuration process is then carried out again,
Hydrogenated nitrile-butadiene rubber sealing ring is set to be combined as a whole with annular groove.
A kind of application method of integral type thin-walled expansion tube, comprises the following steps：
1) position and set damage situation are damaged according to down-hole casing set, determines the length of integral type thin-walled expansion tube, ring on body
The bar number and spacing of annular groove, select suitable integral type thin-walled expansion tube on the group number and spacing, annular boss of shape boss；
2) bottom plug, expansion cone, center-pole and oil pipe are installed successively from lower to upper in the body；
3) integral type thin-walled expansion tube is delivered to position to be subsidized in pit shaft using oil pipe, high-pressure spray is pumped into by oil pipe
Body；High-pressure fluid in cavity between expansion cone and bottom plug promotes the expansion cone in the second segment of body up, forces
Body first paragraph is deformed upon, and body is interference fitted with pit shaft, the integral type thin-walled expansion tube is suspended on shaft in wall；
4) after expansion cone is deviate from out of body, oil pipe, center-pole, expansion cone are proposed out of pit shaft；
5) bottom plug milling is fallen, proposes milling tubing string, complete construction operation.
The features such as integral type thin-walled expansion tube has simple in construction, easy to process.Both solved during going into the well because of well
Collision between wall and sealing ring causes the problem of sealing ring comes off；Generally conventional soft metal sealing ring can be prevented effectively from simultaneously
Heat affecting easily is caused to sealing ring and expansion tube body in scarfweld or built-up welding, and causes to proceed to welding region in expansion process
When bulbs of pressure the problems such as increase.Meanwhile, because suspension sealing annular boss has a style of one's own with thin-walled expansion tube body, as tail
When pipe is hung, it is possible to prevente effectively from pulling problem in load bearing process.
Brief description of the drawings
Fig. 1 is a kind of semi-cutaway of integral type thin-walled expansion tube；
Profile when Fig. 2 is body undressed second segment；
Fig. 3 is the profile for the body for processing second segment；
Fig. 4 is the semi-cutaway of integral type thin-walled expansion tube use state.
Embodiment
Technical scheme is described in detail below in conjunction with the drawings and specific embodiments.
A kind of integral type thin-walled expansion tube, including body 1 and hydrogenated nitrile-butadiene rubber sealing ring 2；1 point of body is two sections, the
One section 101 of internal diameter is less than the external diameter of expansion cone, and the internal diameter of second segment 102 is more than the external diameter of expansion cone；The first paragraph 101 of body
On be formed with multiple annular boss；It is arranged with multiple annular grooves on annular boss in parallel；Hydrogenated nitrile-butadiene rubber sealing ring 2 is set
In annular groove and in combination it is integrated.
In order to strengthen the anti-wear performance of hydrogenated nitrile-butadiene rubber sealing ring 2, can select with nano zine oxide+nanometer tungsten carbide+
Nanometer molybdenum sulfide is used as the hydrogenated nitrile-butadiene rubber sealing ring 2 for combining reinforcing agent.It is preferred that, the content of nano zine oxide for 1~
1.5wt.%, the content of nanometer tungsten carbide are 0.2~0.5wt.%, and the content of nanometer molybdenum sulfide is 0.2~0.6wt.%.
In order to reduce collision of the integral type thin-walled expansion tube during going into the well with pit shaft, annular boss edge chamfer is excellent
It is 10~15 ° to select chamfering, and 12.5 ° of chamfering is commonly used during Specific construction.
The spacing for organizing number, layout and adjacent twice boss of annular boss regards underground Tao Sundian positions and set damages the reality of section
Depending on length.In implementation process, the spacing between adjacent two annular boss can be 0.3~1.5m.The width of annular groove be 1~
1.5mm, depth is that the spacing between 1~2.5mm, adjacent two groove is 10~20mm.
In implementation process, the wall thickness of body is 10~12mm.
The preparation method of above-mentioned integral type thin-walled expansion tube, comprises the following steps：
1) one section that diameter is more than former body is extruded in one end cold punching of body 1, as second segment 102, for being used as expansion
The emission cavity of cone；Remaining body is first paragraph 101；
2) get on the bus in the first paragraph of body 1 and cut out multigroup annular boss；
3) parallel turning goes out a plurality of annular groove on annular boss；
4) unvulcanized hydrogenated nitrile-butadiene rubber sealing ring is respectively mounted in annular groove, sulfuration process is then carried out again,
Hydrogenated nitrile-butadiene rubber sealing ring is set to be combined as a whole with annular groove.
The application method of above-mentioned integral type thin-walled expansion tube, comprises the following steps：
1) position and set damage situation are damaged according to down-hole casing set, determines the length of integral type thin-walled expansion tube, ring on body
The bar number and spacing of annular groove, select suitable integral type thin-walled expansion tube on the group number and spacing, annular boss of shape boss；
2) bottom plug 5, expansion cone 6, center-pole 7 and oil pipe 8 are installed successively from lower to upper in body 1；
3) integral type thin-walled expansion tube is delivered to position to be subsidized in pit shaft using oil pipe, high pressure is pumped into by oil pipe 8
Fluid；High-pressure fluid in cavity between expansion cone 6 and bottom plug 5 is promoted in the expansion cone 6 in the second segment 102 of body
OK, the first paragraph of body 1 is forced to deform upon, body 1 is interference fitted with pit shaft, integral type thin-walled expansion tube is suspended in pit shaft
On wall；
4) after expansion cone 6 is deviate from out of body 1, oil pipe 8, center-pole 7, expansion cone 6 are proposed out of pit shaft；
5) bottom plug milling is fallen, proposes milling tubing string, complete construction operation.
The technical scheme can be implemented with other ad hoc fashions or other particular forms, without departing from wanting for the present invention
Purport or substantive characteristics.Therefore, it is regarded as from the point of view of the embodiment of description is in terms of any illustrative and non-limiting.This hair
Bright scope should be illustrated that any change equivalent with the intention and scope of claim should be also included in by appended claims
In the scope of the present invention.
Claims (9)
1. a kind of integral type thin-walled expansion tube, it is characterised in that：Including body (1) and hydrogenated nitrile-butadiene rubber sealing ring (2)；It is described
Body (1) is divided into two sections, and the internal diameter of first paragraph (101) is less than the external diameter of expansion cone, and the internal diameter of second segment (102) is more than expansion cone
External diameter；Multiple annular boss are formed with the first paragraph (101) of the body；It is arranged with parallel on the annular boss multiple
Annular groove；The hydrogenated nitrile-butadiene rubber sealing ring (2) is arranged in the annular groove and in combination is integrated.
2. integral type thin-walled expansion tube as claimed in claim 1, it is characterised in that：In the hydrogenated nitrile-butadiene rubber sealing ring (2)
Contain nano zine oxide, nanometer tungsten carbide and nanometer molybdenum sulfide.
3. integral type thin-walled expansion tube as claimed in claim 2, it is characterised in that：In the hydrogenated nitrile-butadiene rubber sealing ring (2)
Nanometer molybdenum sulfide containing+0.2~0.6wt.% of 1~1.5wt.% nano zine oxide+0.2~0.5wt.% nanometer tungsten carbides.
4. integral type thin-walled expansion tube as claimed in claim 1, it is characterised in that：The annular boss edge chamfer.
5. integral type thin-walled expansion tube as claimed in claim 1, it is characterised in that：The annular boss edge chamfer be 10~
15°。
6. integral type thin-walled expansion tube as claimed in claim 1, it is characterised in that：Spacing between adjacent two annular boss is
0.3~1.5m.
7. integral type thin-walled expansion tube as claimed in claim 1, it is characterised in that：The width of the annular groove be 1~
1.5mm, depth is that the spacing between 1~2.5mm, adjacent two groove is 10~20mm.
8. a kind of preparation method of integral type thin-walled expansion tube, it is characterised in that comprise the following steps：
1) one section that diameter is more than former body is extruded in body (1) one end cold punching, as second segment (102), for being used as expansion
The emission cavity of cone；Remaining body is first paragraph (101)；
2) get on the bus in the first paragraph of the body (1) and cut out multigroup annular boss；
3) parallel turning goes out a plurality of annular groove on the annular boss；
4) unvulcanized hydrogenated nitrile-butadiene rubber sealing ring is respectively mounted in annular groove, sulfuration process is then carried out again, makes hydrogen
Change nitrile rubber sealing ring to be combined as a whole with annular groove.
9. a kind of application method of integral type thin-walled expansion tube, it is characterised in that comprise the following steps：
1) position and set damage situation are damaged according to down-hole casing set, determines the length of integral type thin-walled expansion tube, convex annular on body
The bar number and spacing of annular groove, select suitable integral type thin-walled expansion tube on the group number and spacing, annular boss of platform；
2) bottom plug (5), expansion cone (6), center-pole (7) and oil pipe are installed successively from lower to upper in the body (1)
(8)；
3) integral type thin-walled expansion tube is delivered to position to be subsidized in pit shaft using oil pipe, high-pressure spray is pumped into by oil pipe (8)
Body；High-pressure fluid in cavity between expansion cone (6) and bottom plug (5) promotes the expansion in the second segment (102) of body
Cone (6) is up, forces body (1) first paragraph to deform upon, and body (1) is interference fitted with pit shaft, makes the integral type thin-walled swollen
Tube expansion is suspended on shaft in wall；
4) after expansion cone (6) is deviate from out of body (1), oil pipe (8), center-pole (7), expansion cone (6) are proposed out of pit shaft；
5) bottom plug milling is fallen, proposes milling tubing string, complete construction operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474874.4A CN107178332A (en) | 2017-06-21 | 2017-06-21 | Integral type thin-walled expansion tube and preparation method thereof and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474874.4A CN107178332A (en) | 2017-06-21 | 2017-06-21 | Integral type thin-walled expansion tube and preparation method thereof and application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107178332A true CN107178332A (en) | 2017-09-19 |
Family
ID=59845357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710474874.4A Pending CN107178332A (en) | 2017-06-21 | 2017-06-21 | Integral type thin-walled expansion tube and preparation method thereof and application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882827A (en) * | 2021-10-01 | 2022-01-04 | 大庆长垣能源科技有限公司 | Manufacturing method of high-pressure-resistant efficient large-drift-diameter all-metal casing patching tool |
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|---|---|---|---|---|
| US20050045324A1 (en) * | 1998-11-16 | 2005-03-03 | Cook Robert Lance | Radial expansion of tubular members |
| US20060048948A1 (en) * | 1998-12-07 | 2006-03-09 | Enventure Global Technology, Llc | Anchor hangers |
| US20060065391A1 (en) * | 2004-09-20 | 2006-03-30 | Owen Oil Tools Lp | Expandable seal |
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2017
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|---|---|---|---|---|
| US20050045324A1 (en) * | 1998-11-16 | 2005-03-03 | Cook Robert Lance | Radial expansion of tubular members |
| US20060048948A1 (en) * | 1998-12-07 | 2006-03-09 | Enventure Global Technology, Llc | Anchor hangers |
| US20060065391A1 (en) * | 2004-09-20 | 2006-03-30 | Owen Oil Tools Lp | Expandable seal |
| CN101457637A (en) * | 2009-01-06 | 2009-06-17 | 刘文西 | Sealing expansion tube apparatus for repairing petroleum thermal production well and implementing method |
| CN102979472A (en) * | 2012-12-06 | 2013-03-20 | 中国石油集团西部钻探工程有限公司 | Expansion hanger |
| CN103867155A (en) * | 2014-04-04 | 2014-06-18 | 华鼎鸿基石油工程技术(北京)有限公司 | Expansion pipe |
| CN106869845A (en) * | 2015-12-14 | 2017-06-20 | 中国石油化工股份有限公司 | A kind of shallow-layer set leakage big orifice expansion of metal bracing means |
Non-Patent Citations (1)
| Title |
|---|
| 李益良;陈强;李涛;韩伟业;毕秀玲;孙强;: "膨胀管封堵调层技术新进展", 石油矿场机械, no. 01 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882827A (en) * | 2021-10-01 | 2022-01-04 | 大庆长垣能源科技有限公司 | Manufacturing method of high-pressure-resistant efficient large-drift-diameter all-metal casing patching tool |
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