CN206458332U - Prevent the assembled casing of casing deformation - Google Patents
Prevent the assembled casing of casing deformation Download PDFInfo
- Publication number
- CN206458332U CN206458332U CN201621462588.3U CN201621462588U CN206458332U CN 206458332 U CN206458332 U CN 206458332U CN 201621462588 U CN201621462588 U CN 201621462588U CN 206458332 U CN206458332 U CN 206458332U
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- CN
- China
- Prior art keywords
- sleeve pipe
- casing
- described sleeve
- joint
- prevent
- 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.)
- Withdrawn - After Issue
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model offer is a kind of to prevent the assembled casing of casing deformation, and it includes at least one section tube unit, and tube unit includes：Sleeve pipe；Joint, it is connected to one end of described sleeve pipe；Fabric outer jacket, it is sheathed on outside described sleeve pipe, and the joint is fixed in one end of the fabric outer jacket.It is of the present utility model prevent that the assembled casing of casing deformation is simple in construction, novel in design, flow of installation safely and fast; casing deformation when can effectively prevent well pressure break; to casing protection effect substantially, sleeve pipe is unlikely to deform, damaged, when reasonably solving well pressure break the problem of casing deformation.
Description
Technical field
The utility model is related to oil, natural gas equal energy source and exploits drilling well assembled casing used, refers in particular to a kind of use
The assembled casing of casing deformation when well pressure break is prevented, belongs to oil, the exploitation of natural gas equal energy source and is 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
Pressing crack construction difficulty and cost increase are caused, is that subsequent job and production bring extreme difficulties, causes 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 plastic deformation, which occurs, for sleeve pipe even destroys, and finally leads
Pressing crack construction is caused not proceed.The sleeve pipe of major part fractured well particularly shale gas well is all to use high intensity individual layer at present
Sleeve pipe, the problem of all failing effectively to prevent 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.
Utility model content
The purpose of this utility model is to be that offer is a kind of to prevent the assembled casing of casing deformation, to overcome above-mentioned existing skill
The deficiency of art.By being arranged fabric outer jacket outside sleeve pipe, it is unlikely to deform sleeve pipe, casing deformation asks when solving well pressure break
Topic.
What the utility model was provided prevents the assembled casing of casing deformation from including at least one section tube unit, described sleeve pipe list
Member includes：
Sleeve pipe；
Joint, it is connected to one end of described sleeve pipe；
Fabric outer jacket, it 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
Multiple eyelets are crossed to penetrate into outside the annular space formed between the fabric outer jacket and described sleeve pipe, 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 fabric outer jacket described in the external stability in the joint.
The assembled casing of casing deformation is prevented described above, wherein, the assembled casing for preventing casing deformation is including more
In the described sleeve pipe unit that section is connected in series, 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
Another clip is crossed to be fixed in the upper groove of the joint of 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 fabric outer jacket described in the external stability in the joint.
The assembled casing of casing deformation is prevented described above, wherein, the assembled casing for preventing casing deformation is including more
In the described sleeve pipe unit that section is connected in series, 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
Another clip is crossed to be fixed in the low groove of the joint of 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
Line is connected.
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 for 0.152 meter extremely
0.280 meter.
The assembled casing of casing deformation is prevented described above, wherein, the fabric outer jacket is outside the fiber of aramid fiber
The fabric outer jacket of set or high-strength carbon fiber.
The characteristics of the utility model and advantage are：
It is of the present utility model to prevent that the assembled casing of casing deformation is simple in construction, novel in design, flow of installation is safe
Quickly, casing deformation when can effectively prevent well pressure break, to casing protection effect substantially, sleeve pipe is unlikely to deform, damaged, reasonably
When solving well pressure break the problem of casing deformation.
Brief description of the drawings
The following drawings is only intended to, in doing the utility model schematic illustration and explanation, not limit model of the present utility model
Enclose.Wherein：
Fig. 1 is structural representation of the present utility model.
Fig. 2 is utility model works view.
Fig. 3 is the structural representation of joint of the present utility model.
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
Embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, now control is illustrated
Embodiment of the present utility model：
As shown in Figure 1 and Figure 2, in order to solve to cover during existing well fracturing, particularly shale gas well reservoir hydrfracturing
Yielding, the flimsy problem of pipe, the utility model offer is a kind of to prevent the assembled casing of casing deformation, and it includes at least one section
Tube unit, tube unit includes：Sleeve pipe 1；Joint 2, it is connected to one end of sleeve pipe 1；Fabric outer jacket 3, it is sheathed on sleeve pipe 1
Outside, joint 2 is fixed in one end of fabric outer jacket 3.Using it is of the present utility model prevent the assembled casing of casing deformation when, will be arranged
Have in the tripping in reservoir stratification of sleeve pipe 1, crack and the mature fault well section of fabric outer jacket 3, in well cementing process, cement mortar 6 oozed
Fabric outer jacket 3, the annular space filled up between sleeve pipe 1 and the borehole wall 5, after after the solidification of cement mortar 6, fabric outer jacket 3 is combined into one with cement mortar 6
Body formation cement sheath, it is possible to increase the intensity of tube unit.During fracturing work, if stratification, crack and mature fault
The changing of the relative positions occurs for layer, and produced shearing force is consumed because of the shearing produced by the changing of the relative positions of stratum on the cement sheath containing fiber
Power, so that protection sleeve pipe 1 is injury-free.It is of the present utility model prevent the assembled casing of casing deformation it is simple in construction, novel in design,
Flow of installation safely and fast, casing deformation when can effectively prevent well pressure break, to casing protection effect substantially, sleeve pipe is difficult
Deformation, damage, when reasonably solving well pressure break the problem of casing deformation.
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 be by between multiple eyelet infiltrated fiber overcoats 3 and sleeve pipe 1
The annular space of formation, cement mortar 6 combines together with fabric outer jacket 3.After after the solidification of cement mortar 6, 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 stratification, crack and mature fault
The changing of the relative positions occurs for stratum, and produced shearing force is consumed because of cutting produced by the changing of the relative positions of stratum on the cement sheath containing fiber
Shear force, so that protection sleeve pipe 1 is 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 the interior energy of low groove 22 is embedded a clip 4, the energy of clip 4
In the external stability fabric outer jacket 3 of joint 2.The quantity of low groove 22 and its internal clip 4 being embedded can according to actual conditions come
Selection, for example, be two, the utility model is not limited this.
Further, the assembled casing of the present utility model for preventing casing deformation includes the sleeve pipe list that multi-stage series are connected
In member, 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, on
The lower end of the fabric outer jacket 3 of square set pipe unit is fixed to the upper groove 21 of the joint 2 of lower section tube unit by another clip 4
It is interior.During well cementation, the hop count of tube unit can be selected according to actual conditions.
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, the interior energy of upper groove 21 is embedded a clip 4, and clip 4 can be in joint 2
External stability fabric outer jacket 3.The quantity of upper groove 21 and its internal clip 4 being embedded can be selected according to actual conditions, for example
It it is two, the utility model is not limited this.
Further, preventing the assembled casing of casing deformation includes the tube unit that multi-stage series are connected, 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 actual conditions.
Wherein, it is to be threadedly coupled between joint 2 and one end of sleeve pipe 1.The utility model is not limited this connected mode.
In a feasible embodiment, the external diameter of sleeve pipe 1 is 0.127 meter to 0.245 meter (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 the fabric outer jacket 3 of aramid fiber or the fabric outer jacket 3 of high-strength carbon fiber.
During fracturing work, if the changing of the relative positions occurs for stratification, crack and mature fault stratum, produced shearing force is in containing aramid fiber
On the cement sheath that fiber or high intensity carbon fiber material are made, because the tensile strength of high strength fibre is P110 steel level oil steel
More than 10 times of pipe tensile strength, can be consumed because of the shearing force produced by the changing of the relative positions of stratum, so that protection sleeve pipe is injury-free.Institute
High strength fibre is stated for aramid fiber or high-strength carbon fiber.
The schematical embodiment of the utility model is the foregoing is only, model of the present utility model is not limited to
Enclose.Any those skilled in the art, the equivalent variations made on the premise of design of the present utility model and principle is not departed from
With modification, the scope of the utility model protection all should be belonged to.And it should be noted that each part of the present utility model simultaneously
It is not limited only to above-mentioned overall applicability, each technical characteristic described in specification of the present utility model can be selected according to actual needs
One individually uses or selects multinomial combine to use, therefore, and the utility model covers practical with this case in the nature of things
The relevant other combinations of novel point and concrete application.
Claims (10)
1. a kind of prevent the assembled casing of casing deformation, it is characterised in that the assembled casing for preventing casing deformation is included extremely
Few one section of tube unit, described sleeve pipe unit includes：
Sleeve pipe；
Joint, it is connected to one end of described sleeve pipe；
Fabric outer jacket, it is sheathed on outside described sleeve pipe, and the joint is fixed in one end of the fabric outer jacket.
2. prevent the assembled casing of casing deformation as claimed in claim 1, it is characterised in that have 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 combines together with the fabric outer jacket.
3. prevent the assembled casing of casing deformation as claimed in claim 1, it is characterised in that the joint is connected to the set
The top of pipe, an at least upper groove and an at least low groove are offered along the circumferencial direction of the outer wall of the joint, described recessed
Groove interior energy is embedded a clip, and the clip can fabric outer jacket described in the external stability in the joint.
4. prevent the assembled casing of casing deformation as claimed in claim 3, it is characterised in that described to prevent the group of casing deformation
Trap pipe is included in the described sleeve pipe unit that multi-stage series are connected, two sections of adjacent described sleeve pipe units, top described sleeve pipe list
The bottom of the described sleeve pipe of member 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. prevent the assembled casing of casing deformation as claimed in claim 1, it is characterised in that the joint is connected to the set
The bottom of pipe, an at least upper groove and an at least low groove, the fovea superior are offered along the circumferencial direction of the outer wall of the joint
Groove interior energy is embedded a clip, and the clip can fabric outer jacket described in the external stability in the joint.
6. prevent the assembled casing of casing deformation as claimed in claim 5, it is characterised in that described to prevent the group of casing deformation
Trap pipe is included in the described sleeve pipe unit that multi-stage series are connected, two sections of adjacent described sleeve pipe units, lower section described sleeve pipe list
The top of the described sleeve pipe of member 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. prevent the assembled casing of casing deformation as claimed in claim 1, it is characterised in that the joint and described sleeve pipe
It is threaded connection between one end.
8. prevent the assembled casing of casing deformation 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. prevent the assembled casing of casing deformation 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. prevent the assembled casing of casing deformation as claimed in claim 1, it is characterised in that the fabric outer jacket is aramid fiber
The fabric outer jacket of fibrous fabric outer jacket or high-strength carbon fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621462588.3U CN206458332U (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 |
|---|---|---|---|
| CN201621462588.3U CN206458332U (en) | 2016-12-28 | 2016-12-28 | Prevent the assembled casing of casing deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458332U true CN206458332U (en) | 2017-09-01 |
Family
ID=59696689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621462588.3U Withdrawn - After Issue CN206458332U (en) | 2016-12-28 | 2016-12-28 | Prevent the assembled casing of casing deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593315A (en) * | 2016-12-28 | 2017-04-26 | 中国石油天然气集团公司 | Combined sleeve with sleeve-deformation-resistant function |
-
2016
- 2016-12-28 CN CN201621462588.3U patent/CN206458332U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593315A (en) * | 2016-12-28 | 2017-04-26 | 中国石油天然气集团公司 | Combined sleeve with sleeve-deformation-resistant function |
| CN106593315B (en) * | 2016-12-28 | 2019-02-15 | 中国石油天然气集团公司 | Prevent the assembled casing of casing deformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170901 Effective date of abandoning: 20190215 |