CN205225226U - Sleeve pipe sliding sleeve fracturing production integration tubular column - Google Patents
Sleeve pipe sliding sleeve fracturing production integration tubular column Download PDFInfo
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- CN205225226U CN205225226U CN201520909500.7U CN201520909500U CN205225226U CN 205225226 U CN205225226 U CN 205225226U CN 201520909500 U CN201520909500 U CN 201520909500U CN 205225226 U CN205225226 U CN 205225226U
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Abstract
The utility model belongs to the technical field of the production of oil and natural gas fracturing, a sleeve pipe sliding sleeve fracturing production integration tubular column, including oil pipe and sleeve pipe, the sleeve pipe is connected to form by the casing nipple, and the casing nipple is connected sleeve pipe sliding sleeve instrument on the sleeve pipe through the concatenation, and the sheathed tube is terminal connects float collar and float shoe through the casing nipple, the ball seat instrument that is used for opening sleeve pipe sliding sleeve instrument is being connected to the oil pipe lower extreme, and this ball seat instrument lies in sleeve pipe sliding sleeve instrument top in vertical orientation. Using with the cooperation of ball seat instrument and fracturing ball finally to make the sliding sleeve of sleeve pipe sliding sleeve instrument open, creating the fracturing condition, sleeve pipe sliding sleeve technology flowing back cycle length is effectively solved to this kind of tubular column, and the oil pipe scheduling problem that has a big risk is pushed down in the slow and area of speed, string structure, easy operation, the efficiency of construction is high, can accomplish fracturing - production integral operation, directly carries out flowing back, production after the fracturing is accomplished, has avoided former sleeve pipe sliding sleeve fracturing string to press back flowing back difficulty and area to force down the operational risk into operations such as flow strings.
Description
Technical field
The utility model belongs to petroleum gas fracturing technical field, is specifically related to a kind of sliding sleeve of bushing fracturing integrated pipe column.
Background technology
Casing cementing sliding sleeve staged fracturing technology is a kind of stimulation technology of rising in recent years, and current external each major company achieves greater advance in the research of this technology.
The application of pressure break sliding sleeve of bushing is the key technology in casing cementing sliding sleeve staged fracturing technology, at present, the opening ways of oil field at home pressure break sliding sleeve of bushing is mainly pitching and opens, i.e. pitching be pumped into ball seat place, improve pressure and cut off pin, open sliding sleeve, after pressure break, direct open flow discharge opeing is gone into operation, or lower oil pipe is gone into operation.
Along with gas field development deepens continuously, actual to apply in process this tubing string there is pressure after the discharge opeing cycle long, speed is slow, and needs after pressure to be with to depress in time to carry out discharge opeing operation, complex procedures into 23/8 〞 oil pipe, the problems such as security risk is large.
Therefore, need a kind of pressure break and later stage discharge opeing integration fracturing string, to solve the rear discharge opeing difficulty of current sliding sleeve of bushing 41/2 〞 sleeve pipe pressure and to be with the operational risk problem depressed into operations such as flow strings.
Utility model content
The purpose of this utility model presses rear discharge opeing difficulty and band to depress the problem of the operational risk into operations such as flow strings to solve current sliding sleeve of bushing 41/2 〞 sleeve pipe.
For this reason, the utility model provides a kind of sliding sleeve of bushing fracturing integrated pipe column, comprise oil pipe and sleeve pipe, sleeve pipe is connected to form by multiple casing nipple, a sliding sleeve of bushing instrument is connected on sleeve pipe by splicing by described casing nipple, and the end of sleeve pipe connects float collar and float shoe by casing nipple; Described oil pipe lower end is connected to the ball seat instrument for opening sliding sleeve of bushing instrument, and this ball seat instrument in the vertical direction is positioned at above sliding sleeve of bushing instrument.
Described sliding sleeve of bushing instrument comprises sliding sleeve body and core cylinder, is provided with radial slotted eye, is provided with shear pin above slotted eye in the middle part of sliding sleeve cylindrical shell barrel, and core cylinder is connected in cylindrical shell by shear pin and is hidden by slotted eye, and joint face two ends are provided with sealing ring.
Described ball seat instrument comprises central tube, lock claw, sealing shroud, sliding sleeve and urceolus, described central tube is connected to oil pipe lower end, central tube bottom and lock claw are threaded connection, on lock claw outer wall, sealing shroud in clamping, sealing shroud is threaded connection with the urceolus being positioned at its outside, setting table terrace bottom urceolus, sliding sleeve is connected in central tube by shear pin.
Described lock claw is elastic material, and sliding sleeve outer wall is provided with a step surface, and the claw on this step surface and lock claw inwall offsets and establishes, and sliding sleeve is connected in central tube by shear pin after lock claw being compressed by this step surface conflict lock claw again.
Described lock claw outer wall is provided with groove, and sealing shroud inwall is provided with the projection installed with groove fit, and the two ends of the projection on the two ends of the groove on described lock claw outer wall and sealing shroud inwall are inclined-plane.
Described sliding sleeve and the fitting face of central tube are provided with sealing ring, and described sliding sleeve and the fitting face of lock are also provided with sealing ring.
The beneficial effects of the utility model: this sliding sleeve of bushing fracturing integrated pipe column of the present utility model, it is long effectively to solve the sliding sleeve of bushing technique discharge opeing cycle, and speed slow and band pressure oil pipe such as to have a big risk at the problem; Tubular column structure, simple to operate, efficiency of construction is high, can complete pressure break-production integration operation; And this integrated pipe column directly can carry out discharge opeing, production after pressure break completes, the operational risk that after avoiding tunica pipe sliding sleeve fracturing tubing string pressure, discharge opeing difficulty and band are depressed into operations such as flow strings.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further details.
Fig. 1 is general structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of sliding sleeve of bushing instrument.
Fig. 3 is the structural representation of ball seat instrument.
Description of reference numerals: 1, oil pipe; 2, sleeve pipe; 3, ball seat instrument; 4, sliding sleeve of bushing instrument; 5, float collar; 6, float shoe; 7, sliding sleeve cylindrical shell; 8, core cylinder; 9, slotted eye; 10, shear pin; 11, central tube; 12, lock claw; 13, sealing shroud; 14, sliding sleeve; 15, urceolus; 16, shear pin.
Detailed description of the invention
Embodiment 1:
The present embodiment provides a kind of sliding sleeve of bushing fracturing integrated pipe column, as shown in Figure 1, comprise oil pipe 1 and sleeve pipe 2, sleeve pipe 2 is connected to form by multiple casing nipple, a sliding sleeve of bushing instrument 4 is connected on sleeve pipe 2 by splicing by described casing nipple, and the end of sleeve pipe 2 connects float collar 5 and float shoe 6 by casing nipple; Described oil pipe 1 lower end is connected to the ball seat instrument 3 for opening sliding sleeve of bushing instrument 4, and this ball seat instrument 3 in the vertical direction is positioned at above sliding sleeve of bushing instrument 4.
This structure of the present embodiment, the sliding sleeve that mainly make use of in sliding sleeve of bushing instrument 4 can be opened, and realizes being interlinked to the outside in sleeve pipe, for fracturing work provides condition.Drop into pressure break ball by oil pipe 1, this club acts on ball seat instrument 3, and formation builds the pressure, pressure arrives to a certain degree, and club drops in sliding sleeve of bushing instrument 4 along with ball seat together, is opened by the sliding sleeve in sliding sleeve of bushing instrument 4, then oil pipe and oil jacket annular space infusion simultaneously, carries out fracturing work.
Embodiment 2:
On the basis of embodiment 1, the present embodiment provides the concrete structure of sliding sleeve of bushing instrument 4, in the present embodiment, sliding sleeve of bushing instrument 4 comprises sliding sleeve cylindrical shell 7 and core cylinder 8, as shown in Figure 2, be provided with radial slotted eye 9 in the middle part of sliding sleeve cylindrical shell 7 barrel, above slotted eye 9, be provided with shear pin 10, core cylinder 8 is connected in cylindrical shell 7 by shear pin 10 and is hidden by slotted eye 9, and joint face two ends are provided with sealing ring.
This structure of the present embodiment is a kind of simple conventional shift sleeve structure, the ball come by oil pipe 1 lower end and ball seat act on core cylinder 8, along with the continuous increase of pressure, the shear pin 10 of fixed core cylinder 8 can be cut off, fixed core cylinder 8 and sliding sleeve cylindrical shell 7 depart from and move downward, expose the slotted eye 9 in the middle part of sliding sleeve cylindrical shell 7 barrel, make sliding sleeve of bushing instrument 4 realized by slotted eye 9 in be interlinked to the outside, namely be equivalent to sleeve pipe 2 realize in be interlinked to the outside, now oil pipe and oil jacket annular space infusion simultaneously, can carry out next step fracturing work by slotted eye 9.
Embodiment 3:
On the basis of embodiment 1, the present embodiment provides the concrete structure of cover ball seat instrument 3, in the present embodiment, ball seat instrument 3 comprises central tube 11, lock claw 12, sealing shroud 13, sliding sleeve 14 and urceolus 15, as shown in Figure 3, described central tube 11 is connected to oil pipe 1 lower end, central tube 11 bottom and lock claw 12 are threaded connection, on lock claw 12 outer wall, sealing shroud 13 in clamping, sealing shroud 13 is threaded connection with the urceolus 15 being positioned at its outside, setting table terrace bottom urceolus 15, sliding sleeve 14 is connected in central tube 11 by shear pin 16.
Lock claw 12 is elastic material, and sliding sleeve 14 outer wall is provided with a step surface, and the claw on this step surface and lock claw 12 inwall offsets and establishes, and sliding sleeve 14 is connected in central tube 11 by shear pin 16 after lock claw 12 being compressed by this step surface conflict lock claw 12 again.
Described lock claw 12 outer wall is provided with groove, and sealing shroud 13 inwall is provided with the projection installed with groove fit, and the two ends of the projection on the two ends of the groove on described lock claw 12 outer wall and sealing shroud 13 inwall are inclined-plane.
Sliding sleeve 14 is provided with sealing ring with the fitting face of central tube 11, and described sliding sleeve 14 is also provided with sealing ring with the fitting face of lock claw 12.
In work progress, ball enters central tube 11 from the lower end of oil pipe 1, first the upper end of sliding sleeve 14 is sitting in, start to build the pressure, along with the continuous increase of pressure, the power acted on sliding sleeve 14 also constantly increases, shear pin 16 can be cut off, owing to being in compressive state after lock claw 12 assembling under sliding sleeve 14 acts on squeezing action, when shear pin 16 is cut off after sliding sleeve moves downward, the extruding that lock claw 12 and sliding sleeve 14 initially assemble retrains and disappears, and lock claw 12 is unlocked, and lock claw resilience impels its claw to recoil to the outside concave surface of sliding sleeve 14, sliding sleeve 14 continues to move downward, finally be sitting on the step surface of urceolus 15 inwall, along with pressure increase, sliding sleeve 14 finally makes urceolus 15 move downward, because sealing shroud 13 and urceolus 15 are threaded connection, so urceolus 15 can force sealing shroud 13 to move downward, because the two ends of the projection on the two ends of the groove on lock claw 12 outer wall and sealing shroud 13 inwall are inclined-plane, when after lock claw 12 resilience, sealing shroud 13 is finally thrown off from incline position and lock claw 12, sealing shroud 13 lockout failure, final sealing shroud 13, sliding sleeve 14 and urceolus 15 are under fluid pressure effect, axially move downward, finally act on the sliding sleeve of bushing instrument 4 of below, open sliding sleeve, create pressure break condition.
Embodiment 4:
The present embodiment provides a kind of fracturing method of above-mentioned sliding sleeve of bushing fracturing integrated pipe column, comprises the steps:
Step one: sliding sleeve of bushing instrument 4 enters well with completion casing 2, the sliding sleeve port of sliding sleeve of bushing instrument 4 aims at gas testing layer position, well cementing of cement, sliding sleeve of bushing instrument 4 herein can be multiple, and the interior latus rectum of every grade of core cylinder is all greater than the interior latus rectum of its upper level core cylinder;
Step 2: adopt explosive valve or perforating gun to carry out first floor perforation, complete the perforation of the first floor of lower position by traditional mode;
Step 3: under enter 27/8 〞 oil pipe 1(or 23/8 〞 oil pipe), oil pipe 1 connects ball seat instrument 3;
Step 4: fracturing work is carried out to the first order perforation layer that the perforation of step 2 is formed;
Step 5: in work progress, ball enters central tube 11 from the lower end of oil pipe 1, first the upper end of sliding sleeve 14 is sitting in, start to build the pressure, along with the continuous increase of pressure, the power acted on sliding sleeve 14 also constantly increases, shear pin 16 can be cut off, owing to being in compressive state after lock claw 12 assembling under sliding sleeve 14 acts on squeezing action, when shear pin 16 is cut off after sliding sleeve moves downward, the extruding that lock claw 12 and sliding sleeve 14 initially assemble retrains and disappears, and lock claw 12 is unlocked, and lock claw resilience impels its claw to recoil to the outside concave surface of sliding sleeve 14, sliding sleeve 14 continues to move downward, finally be sitting on the step surface of urceolus 15 inwall, along with pressure increase, sliding sleeve 14 finally makes urceolus 15 move downward, because sealing shroud 13 and urceolus 15 are threaded connection, so urceolus 15 can force sealing shroud 13 to move downward, because the two ends of the projection on the two ends of the groove on lock claw 12 outer wall and sealing shroud 13 inwall are inclined-plane, when after lock claw 12 resilience, sealing shroud 13 is finally thrown off from incline position and lock claw 12, sealing shroud 13 lockout failure, final sealing shroud 13, sliding sleeve 14 and urceolus 15 are under fluid pressure effect, axially move downward, finally act on the sliding sleeve of bushing instrument 4 of below, open sliding sleeve, create pressure break condition.
Step 6: the ball that oil pipe 1 lower end is come and sealing shroud 13, sliding sleeve 14 and urceolus 15 act on core cylinder 8, along with the continuous increase of pressure, the shear pin 10 of fixed core cylinder 8 can be cut off, fixed core cylinder 8 and sliding sleeve cylindrical shell 7 depart from and move downward, expose the slotted eye 9 in the middle part of sliding sleeve cylindrical shell 7 barrel, make sliding sleeve of bushing instrument 4 realized by slotted eye 9 in be interlinked to the outside, be namely equivalent to sleeve pipe 2 realize in be interlinked to the outside, next step fracturing work can be carried out by slotted eye 9.
Step 7: oil pipe and oil jacket annular space infusion simultaneously, highly pressurised liquid breaks through the cementing concrete ring of pressure break sliding sleeve of bushing periphery, enters stratum, implements the pressure break of this sliding sleeve of bushing to the second level;
Step 8: after construction terminates, directly carry out discharge opeing operation, completion.
In sum, it is long that the utility model effectively can solve the sliding sleeve of bushing technique discharge opeing cycle, and speed is slow and be with the problems such as pressure oil pipe has a big risk; Tubular column structure and simple to operate, efficiency is high, can complete pressure break-production integration operation.
The parts that the present embodiment does not describe in detail and structure belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.
Claims (6)
1. a sliding sleeve of bushing fracturing integrated pipe column, comprise oil pipe (1) and sleeve pipe (2), sleeve pipe (2) is connected to form by multiple casing nipple, it is characterized in that: a sliding sleeve of bushing instrument (4) is connected on sleeve pipe (2) by splicing by described casing nipple, and the end of sleeve pipe (2) connects float collar (5) and float shoe (6) by casing nipple; Described oil pipe (1) lower end is connected to the ball seat instrument (3) for opening sliding sleeve of bushing instrument (4), and this ball seat instrument (3) in the vertical direction is positioned at sliding sleeve of bushing instrument (4) top.
2. sliding sleeve of bushing fracturing integrated pipe column as claimed in claim 1, it is characterized in that: described sliding sleeve of bushing instrument (4) comprises sliding sleeve cylindrical shell (7) and core cylinder (8), radial slotted eye (9) is provided with in the middle part of sliding sleeve cylindrical shell (7) barrel, slotted eye (9) top is provided with shear pin (10), core cylinder (8) is connected in cylindrical shell (7) by shear pin (10) and is hidden by slotted eye (9), and joint face two ends are provided with sealing ring.
3. sliding sleeve of bushing fracturing integrated pipe column as claimed in claim 1 or 2, it is characterized in that: described ball seat instrument (3) comprises central tube (11), lock claw (12), sealing shroud (13), sliding sleeve (14) and urceolus (15), described central tube (11) is connected to oil pipe (1) lower end, central tube (11) bottom and lock claw (12) are threaded connection, on lock claw (12) outer wall, sealing shroud (13) in clamping, sealing shroud (13) is threaded connection with the urceolus (15) being positioned at its outside, urceolus (15) bottom setting table terrace, sliding sleeve (14) is connected in central tube (11) by shear pin (16).
4. sliding sleeve of bushing fracturing integrated pipe column as claimed in claim 3, it is characterized in that: described lock claw (12) is elastic material, sliding sleeve (14) outer wall is provided with a step surface, claw on this step surface and lock claw (12) inwall offsets and establishes, and sliding sleeve (14) is connected in central tube (11) by shear pin (16) after lock claw (12) being compressed by this step surface conflict lock claw (12) again.
5. sliding sleeve of bushing fracturing integrated pipe column as claimed in claim 4, it is characterized in that: described lock claw (12) outer wall is provided with groove, sealing shroud (13) inwall is provided with the projection installed with groove fit, and the two ends of the projection on the two ends of the groove on described lock claw (12) outer wall and sealing shroud (13) inwall are inclined-plane.
6. sliding sleeve of bushing fracturing integrated pipe column as claimed in claim 3, it is characterized in that: described sliding sleeve (14) is provided with sealing ring with the fitting face of central tube (11), described sliding sleeve (14) is also provided with sealing ring with the fitting face of lock claw (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520909500.7U CN205225226U (en) | 2015-11-16 | 2015-11-16 | Sleeve pipe sliding sleeve fracturing production integration tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520909500.7U CN205225226U (en) | 2015-11-16 | 2015-11-16 | Sleeve pipe sliding sleeve fracturing production integration tubular column |
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| CN205225226U true CN205225226U (en) | 2016-05-11 |
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| CN201520909500.7U Active CN205225226U (en) | 2015-11-16 | 2015-11-16 | Sleeve pipe sliding sleeve fracturing production integration tubular column |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401931A (en) * | 2015-11-16 | 2016-03-16 | 中国石油天然气股份有限公司 | Integrated pipe column for casing pipe sliding sleeve fracturing production and fracturing production method for casing pipe sliding sleeve |
| CN106677737A (en) * | 2017-03-10 | 2017-05-17 | 北京奥赛旗石油科技开发有限公司 | Sealing assembly and sealing equipment |
| CN106837234A (en) * | 2017-03-10 | 2017-06-13 | 北京奥赛旗石油科技开发有限公司 | A kind of reducing component and reducing water-tight equipment |
-
2015
- 2015-11-16 CN CN201520909500.7U patent/CN205225226U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401931A (en) * | 2015-11-16 | 2016-03-16 | 中国石油天然气股份有限公司 | Integrated pipe column for casing pipe sliding sleeve fracturing production and fracturing production method for casing pipe sliding sleeve |
| CN105401931B (en) * | 2015-11-16 | 2018-03-09 | 中国石油天然气股份有限公司 | A kind of sliding sleeve of bushing fracturing integrated pipe column and its fracturing method |
| CN106677737A (en) * | 2017-03-10 | 2017-05-17 | 北京奥赛旗石油科技开发有限公司 | Sealing assembly and sealing equipment |
| CN106837234A (en) * | 2017-03-10 | 2017-06-13 | 北京奥赛旗石油科技开发有限公司 | A kind of reducing component and reducing water-tight equipment |
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