CN106593315A - Combined sleeve with sleeve-deformation-resistant function - Google Patents
Combined sleeve with sleeve-deformation-resistant function Download PDFInfo
- Publication number
- CN106593315A CN106593315A CN201611235118.8A CN201611235118A CN106593315A CN 106593315 A CN106593315 A CN 106593315A CN 201611235118 A CN201611235118 A CN 201611235118A CN 106593315 A CN106593315 A CN 106593315A
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- described sleeve
- casing
- joint
- deformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/006—Accessories for drilling pipes, e.g. cleaners
Abstract
The invention provides a combined sleeve with a sleeve-deformation-resistant function. The combined sleeve comprises at least one section of sleeve unit, wherein each sleeve unit comprises a sleeve, a connector and a fiber outer sleeve; the connector is connected with one end of the sleeve; the fiber outer sleeve sleeves the outside of the sleeve; and one end of the fiber outer sleeve is fixed on the connector. The combined sleeve with the sleeve-deformation-resistant function has the advantages that the structure is simple; the design is novel; the installation technical flow process is safe and fast; the sleeve deformation during the well fracturing can be effectively prevented; the protection effect on the sleeve is obvious; the sleeve cannot easily deform or damage; and the problem of sleeve deformation during the well fracturing is reasonably solved.
Description
Technical field
The present invention relates to oil, natural gas equal energy source exploitation drilling well assembled casing used, refers in particular to a kind of for preventing
Only during well pressure break casing deformation assembled casing, belong to oil, natural gas equal energy source exploitation be drilled well field.
Background technology
Sichuan Province of China Changning-Weiyuan shale gas block sleeve pipe in hydraulic fracturing occurs in that different degrees of damage, leads
Cause pressing crack construction difficulty and cost to increase, be that subsequent job and production bring extreme difficulties, cause that well yield is low, well Life Cycle
The problems such as phase is short, has a strong impact on shale gas exploitation whole economic efficiency.With the fast development of unconventionaloil pool, fracturing technique is
The Main Means of unconventionaloil pool reservoir reconstruction, and pressure break occurs along with microseism often, causes the mistake of stratum some scale
Dynamic, the shearing force produced by the changing of the relative positions of stratum is acted directly on sleeve pipe, and sleeve pipe occurs plastic deformation and destruction even occurs, and finally leads
Cause pressing crack construction proceed.The sleeve pipe that major part fractured well is particularly shale gas well at present is all using high intensity monolayer
Sleeve pipe, all fails to be effectively prevented the problem of casing deformation.Due to casing deformation, the reduction of reservoir hydrfracturing hop count is result in,
Well yield is reduced, it is impossible to obtain good economic benefit, hinders the exploitation of unconventionaloil pool scale.
The content of the invention
It is to provide a kind of assembled casing for preventing casing deformation that the purpose of the present invention is, to overcome above-mentioned prior art
It is not enough.By fabric outer jacket is arranged outside sleeve pipe, it is unlikely to deform sleeve pipe, solves the problems, such as casing deformation during well pressure break.
The assembled casing for preventing casing deformation that the present invention is provided includes at least one section tube unit, described sleeve pipe unit bag
Include：
Sleeve pipe；
Joint, which is connected to one end of described sleeve pipe；
Fabric outer jacket, which is sheathed on outside described sleeve pipe, and the joint is fixed in one end of the fabric outer jacket.
The assembled casing of casing deformation is prevented described above, wherein, there are multiple eyelets, described on the fabric outer jacket
In the state of assembled casing is located in pit shaft, the cement mortar in the annular space formed between the assembled casing and the pit shaft can lead to
Cross multiple eyelets and penetrate into the annular space formed between the fabric outer jacket and described sleeve pipe, outside the cement mortar and the fiber
Set combines together.
The assembled casing of casing deformation is prevented described above, wherein, the joint is connected to the top of described sleeve pipe, along institute
The circumferencial direction for stating the outer wall of joint offers an at least upper groove and an at least low groove, and the low groove interior energy is embedded a card
Hoop, the clip can be in fabric outer jacket described in the external stability of the joint.
The assembled casing of casing deformation is prevented described above, wherein, the assembled casing for preventing casing deformation includes many
The described sleeve pipe unit that section is connected in series, in two sections of adjacent described sleeve pipe units, the described sleeve pipe of top described sleeve pipe unit
Bottom be connected to the joint of lower section described sleeve pipe unit, the lower end of the fabric outer jacket of top described sleeve pipe unit leads to
Cross in the upper groove of the joint that another clip is fixed to lower section described sleeve pipe unit.
The assembled casing of casing deformation is prevented described above, wherein, the joint is connected to the bottom of described sleeve pipe, along institute
The circumferencial direction for stating the outer wall of joint offers an at least upper groove and an at least low groove, and the upper groove interior energy is embedded a card
Hoop, the clip can be in fabric outer jacket described in the external stability of the joint.
The assembled casing of casing deformation is prevented described above, wherein, the assembled casing for preventing casing deformation includes many
The described sleeve pipe unit that section is connected in series, in two sections of adjacent described sleeve pipe units, the described sleeve pipe of lower section described sleeve pipe unit
Top be connected to the joint of top described sleeve pipe unit, the upper end of the fabric outer jacket of lower section described sleeve pipe unit leads to
Cross in the low groove of the joint that another clip is fixed to top described sleeve pipe unit.
The assembled casing of casing deformation is prevented described above, wherein, it is spiral shell between the joint and one end of described sleeve pipe
Stricture of vagina connects.
The assembled casing of casing deformation is prevented described above, wherein, the external diameter of described sleeve pipe is 0.127 meter to 0.245 meter.
Prevent the assembled casing of casing deformation described above, wherein, the external diameter of the fabric outer jacket be 0.152 meter extremely
0.280 meter.
The assembled casing of casing deformation is prevented described above, wherein, the fabric outer jacket is by aramid fiber or high strength carbon
Fibrous material is made.
The characteristics of of the invention and advantage are：
The present invention the assembled casing simple structure for preventing casing deformation, modern design, flow of installation safely and fast,
Casing deformation when can be effectively prevented well pressure break, to casing protection effect substantially, sleeve pipe is unlikely to deform, damages, and reasonably solves
The problem of casing deformation during well pressure break.
Description of the drawings
The following drawings is only intended in schematic illustration and explanation is done to the present invention, is not delimit the scope of the invention.Wherein：
Fig. 1 is the structural representation of the present invention.
Fig. 2 is working state schematic representation of the present invention.
Fig. 3 is the structural representation of the joint of the present invention.
Reference numeral explanation：
1 sleeve pipe
2 joints
21 upper grooves
22 low grooves
3 fabric outer jackets
4 clips
5 boreholes wall
6 cement mortars
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now control illustrates this
Bright specific embodiment：
As shown in Figure 1 and Figure 2, in order to solve during existing well fracturing, particularly shale gas well reservoir hydrfracturing cover
Yielding, the flimsy problem of pipe, the present invention provide a kind of assembled casing for preventing casing deformation, and which includes at least one section sleeve pipe
Unit, tube unit include：Sleeve pipe 1；Joint 2, which is connected to one end of sleeve pipe 1；Fabric outer jacket 3, which is sheathed on outside sleeve pipe 1,
Joint 2 is fixed in one end of fabric outer jacket 3.Using the present invention prevent casing deformation assembled casing when, fiber will be arranged with
Enter under the sleeve pipe 1 of overcoat 3 in reservoir layer reason, crack and mature fault well section, in well cementing process, cement mortar 6 was oozed outside fiber
Set 3, the annular space filled up between sleeve pipe 1 and the borehole wall 5, after cement mortar 6 solidifies, fabric outer jacket 3 is integrated to be formed with cement mortar 6
Cement sheath, it is possible to increase the intensity of tube unit.During fracturing work, if layer reason, crack and mature fault stratum occur
The changing of the relative positions, produced shear action are consumed because of the shearing force produced by the changing of the relative positions of stratum on the cement sheath containing fiber, so as to
Protection sleeve pipe 1 is injury-free.The assembled casing simple structure for preventing casing deformation of the present invention, modern design, mounting process stream
Journey safely and fast, casing deformation when can be effectively prevented well pressure break, to casing protection effect substantially, sleeve pipe is unlikely to deform, damages,
Casing deformation during well pressure break is solved the problems, such as reasonably.
Wherein, there are multiple eyelet (not shown) on fabric outer jacket 3, in the state of assembled casing is located in pit shaft,
Cement mortar 6 in the annular space formed between assembled casing and pit shaft can pass through between multiple eyelet infiltrated fiber overcoats 3 and sleeve pipe 1
The annular space of formation, cement mortar 6 are combined together with fabric outer jacket 3.After cement mortar 6 solidifies, fabric outer jacket 3 is combined into cement mortar 6
Integrally formed cement sheath, it is possible to increase the intensity of tube unit.During fracturing work, if layer reason, crack and mature fault
There is the changing of the relative positions in stratum, produced shear action is consumed because of cutting produced by the changing of the relative positions of stratum on the cement sheath containing fiber
Shear force, so as to protect sleeve pipe 1 injury-free.
In a feasible embodiment, as shown in figure 3, joint 2 is connected to the top of sleeve pipe 1, along the outer wall of joint 2
Circumferencial direction offers an at least upper groove 21 and an at least low groove 22, and 22 interior energy of low groove is embedded a clip 4,4 energy of clip
In the external stability fabric outer jacket 3 of joint 2.The quantity of the clip 4 that low groove 22 and its inside are embedded can according to practical situation come
Select, for example, be two, the present invention is not limited to this.
Further, the of the invention assembled casing for preventing casing deformation includes the tube unit of multi-stage series connection, phase
In two sections of adjacent tube units, the bottom of the sleeve pipe 1 of top tube unit is connected to the joint 2 of lower section tube unit, upper square set
The lower end of the fabric outer jacket 3 of pipe unit is fixed to by another clip 4 in the upper groove 21 of the joint 2 of lower section tube unit.
During well cementation, the hop count of tube unit can be selected according to practical situation.
In another feasible embodiment, joint 2 is connected to the bottom of sleeve pipe 1, along the circumferencial direction of the outer wall of joint 2
An at least upper groove 21 and an at least low groove 22 are offered, 21 interior energy of upper groove is embedded a clip 4, and clip 4 can be in joint 2
External stability fabric outer jacket 3.The quantity of the clip 4 that upper groove 21 and its inside are embedded can be selected according to practical situation, for example
Two are, the present invention is not limited to this.
Further, prevent casing deformation assembled casing include multi-stage series connection tube unit, adjacent two sections
In tube unit, the top of the sleeve pipe 1 of lower section tube unit is connected to the joint 2 of top tube unit, lower section tube unit
The upper end of fabric outer jacket 3 is fixed to by another clip 4 in the low groove 22 of the joint 2 of top tube unit.In the mistake of well cementation
Cheng Zhong, can select the hop count of tube unit according to practical situation.
Wherein, it is to be threadedly coupled between joint 2 and one end of sleeve pipe 1.The present invention is not limited to this connected mode.
In a feasible embodiment, the external diameter of sleeve pipe 1 is 0.127 meter to 0.245 meter, and (i.e. 5 inches to 9.625 English
It is very little), the external diameter of fabric outer jacket 3 is 0.152 meter to 0.280 meter (i.e. 6 inches to 11 inches).The external diameter of sleeve pipe 1 can be according to pit shaft
Internal diameter selected, and the external diameter of fabric outer jacket 3 is further selected according to the external diameter of sleeve pipe 1.
Specifically, fabric outer jacket 3 is made up of aramid fiber or high intensity carbon fiber material.During fracturing work, if
There is the changing of the relative positions in layer reason, crack and mature fault stratum, produced shear action is in fine containing aramid fiber or high strength carbon
On cement sheath made by dimension material, as the tensile strength of high strength fibre is 10 times of P110 steel level oil steel pipe tensile strength
More than, can consume because of the shearing force produced by the changing of the relative positions of stratum, so as to protect sleeve pipe injury-free.The high strength fibre is virtue
Synthetic fibre fiber or high-strength carbon fiber.
Schematically specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any
Those skilled in the art, the equivalent variations made on the premise of the design without departing from the present invention and principle and modification, all should
Belong to the scope of protection of the invention.And it should be noted that each ingredient of the present invention be not limited in above-mentioned entirety should
With each technical characteristic described in the description of the present invention can select one individually to adopt or select multinomial according to actual needs
Combine use, therefore, the present invention covers other relevant with this case inventive point combination and concrete application in the nature of things.
Claims (10)
1. a kind of assembled casing for preventing casing deformation, it is characterised in that the assembled casing for preventing casing deformation include to
Few one section of tube unit, described sleeve pipe unit include：
Sleeve pipe；
Joint, which is connected to one end of described sleeve pipe；
Fabric outer jacket, which is sheathed on outside described sleeve pipe, and the joint is fixed in one end of the fabric outer jacket.
2. the assembled casing of casing deformation is prevented as claimed in claim 1, it is characterised in that had on the fabric outer jacket many
Individual eyelet, in the state of the assembled casing is located in pit shaft, the annular space formed between the assembled casing and the pit shaft
In cement mortar can penetrate into the annular space formed between the fabric outer jacket and described sleeve pipe, the cement by multiple eyelets
Slurry is combined together with the fabric outer jacket.
3. the assembled casing of casing deformation is prevented as claimed in claim 1, it is characterised in that the joint is connected to the set
The top of pipe, offers an at least upper groove and an at least low groove along the circumferencial direction of the outer wall of the joint, described recessed
Groove interior energy is embedded a clip, and the clip can be in fabric outer jacket described in the external stability of the joint.
4. the assembled casing of casing deformation is prevented as claimed in claim 3, it is characterised in that the group for preventing casing deformation
Trap pipe includes the described sleeve pipe unit of multi-stage series connection, in two sections of adjacent described sleeve pipe units, top described sleeve pipe list
The bottom of the described sleeve pipe of unit is connected to the joint of lower section described sleeve pipe unit, the fiber of top described sleeve pipe unit
The lower end of overcoat is fixed to by another clip in the upper groove of the joint of lower section described sleeve pipe unit.
5. the assembled casing of casing deformation is prevented as claimed in claim 1, it is characterised in that the joint is connected to the set
The bottom of pipe, offers an at least upper groove and an at least low groove, the fovea superior along the circumferencial direction of the outer wall of the joint
Groove interior energy is embedded a clip, and the clip can be in fabric outer jacket described in the external stability of the joint.
6. the assembled casing of casing deformation is prevented as claimed in claim 5, it is characterised in that the group for preventing casing deformation
Trap pipe includes the described sleeve pipe unit of multi-stage series connection, in two sections of adjacent described sleeve pipe units, lower section described sleeve pipe list
The top of the described sleeve pipe of unit is connected to the joint of top described sleeve pipe unit, the fiber of lower section described sleeve pipe unit
The upper end of overcoat is fixed to by another clip in the low groove of the joint of top described sleeve pipe unit.
7. the assembled casing of casing deformation is prevented as claimed in claim 1, it is characterised in that the joint and described sleeve pipe
It is threaded connection between one end.
8. the assembled casing of casing deformation is prevented as claimed in claim 1, it is characterised in that the external diameter of described sleeve pipe is
0.127 meter to 0.245 meter.
9. the assembled casing of casing deformation is prevented as claimed in claim 1, it is characterised in that the external diameter of the fabric outer jacket is
0.152 meter to 0.280 meter.
10. the assembled casing of casing deformation is prevented as claimed in claim 1, it is characterised in that the fabric outer jacket is by aramid fiber
Fiber or high intensity carbon fiber material are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235118.8A CN106593315B (en) | 2016-12-28 | 2016-12-28 | Prevent the assembled casing of casing deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235118.8A CN106593315B (en) | 2016-12-28 | 2016-12-28 | Prevent the assembled casing of casing deformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593315A true CN106593315A (en) | 2017-04-26 |
| CN106593315B CN106593315B (en) | 2019-02-15 |
Family
ID=58602951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611235118.8A Active CN106593315B (en) | 2016-12-28 | 2016-12-28 | Prevent the assembled casing of casing deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593315B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120070A (en) * | 2017-06-15 | 2017-09-01 | 新疆国利衡清洁能源科技有限公司 | Hole structure and its building method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101697A (en) * | 1994-04-18 | 1995-04-19 | 华北石油管理局钻井工艺研究所 | Double layer combined case-pipe post structure and cementing method |
| US20080035328A1 (en) * | 2006-08-09 | 2008-02-14 | Tejas Associates, Inc. | Laminate pressure containing body for a well tool |
| CN102089494A (en) * | 2008-07-11 | 2011-06-08 | 韦尔泰克有限公司 | Sealing arrangement and sealing method |
| CN201991451U (en) * | 2011-03-11 | 2011-09-28 | 中国海洋石油总公司 | High-strength composite pipe |
| CN102459806A (en) * | 2009-05-27 | 2012-05-16 | 里德威尔服务有限公司 | Active external casing packer (ecp) for frac operations in oil and gas wells |
| CN206458332U (en) * | 2016-12-28 | 2017-09-01 | 中国石油天然气集团公司 | Prevent the assembled casing of casing deformation |
-
2016
- 2016-12-28 CN CN201611235118.8A patent/CN106593315B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101697A (en) * | 1994-04-18 | 1995-04-19 | 华北石油管理局钻井工艺研究所 | Double layer combined case-pipe post structure and cementing method |
| US20080035328A1 (en) * | 2006-08-09 | 2008-02-14 | Tejas Associates, Inc. | Laminate pressure containing body for a well tool |
| CN102089494A (en) * | 2008-07-11 | 2011-06-08 | 韦尔泰克有限公司 | Sealing arrangement and sealing method |
| CN102459806A (en) * | 2009-05-27 | 2012-05-16 | 里德威尔服务有限公司 | Active external casing packer (ecp) for frac operations in oil and gas wells |
| CN201991451U (en) * | 2011-03-11 | 2011-09-28 | 中国海洋石油总公司 | High-strength composite pipe |
| CN206458332U (en) * | 2016-12-28 | 2017-09-01 | 中国石油天然气集团公司 | Prevent the assembled casing of casing deformation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120070A (en) * | 2017-06-15 | 2017-09-01 | 新疆国利衡清洁能源科技有限公司 | Hole structure and its building method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106593315B (en) | 2019-02-15 |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: China National Petroleum Corp. Patentee before: CNPC Drilling Engineering Technology Research Institute Co.,Ltd. Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: China National Petroleum Corp. Patentee after: CNPC Drilling Engineering Technology Research Institute Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: China National Petroleum Corp. Patentee before: DRILLING RESEARCH INSTITUTE OF CHINA NATIONAL PETROLEUM Co. |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230103 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Patentee after: BEIJING PETROLEUM MACHINERY Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: CHINA NATIONAL PETROLEUM Corp. Patentee before: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. |
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| TR01 | Transfer of patent right |