CN111101894A - Tracer sliding sleeve - Google Patents
Tracer sliding sleeve Download PDFInfo
- Publication number
- CN111101894A CN111101894A CN201911420726.XA CN201911420726A CN111101894A CN 111101894 A CN111101894 A CN 111101894A CN 201911420726 A CN201911420726 A CN 201911420726A CN 111101894 A CN111101894 A CN 111101894A
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- sleeve
- ball seat
- wall
- inner sleeve
- groove
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- 239000000700 radioactive tracer Substances 0.000 title claims abstract description 52
- 238000009434 installation Methods 0.000 claims abstract description 29
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 238000010008 shearing Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 23
- 238000007789 sealing Methods 0.000 description 13
- 239000012530 fluid Substances 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000021541 TRAIL production Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention provides a tracing sliding sleeve, and relates to the technical field of oil and gas production equipment. The spike sliding sleeve includes: the outer sleeve, the first inner sleeve and the second inner sleeve; a tracer installation part communicated with the inside and the outside of the outer sleeve is arranged on the pipe wall close to the first end of the outer sleeve; a first ball seat is arranged in the first inner sleeve, the first inner sleeve is arranged in the outer sleeve in a penetrating mode, and the tracer installation part is shielded; a second ball seat is arranged in the second inner sleeve, the second inner sleeve is arranged in the outer sleeve in a penetrating manner, the second inner sleeve is close to the second end of the outer sleeve relative to the first inner sleeve, and a through hole is formed in the pipe wall of the outer sleeve at the position corresponding to the second inner sleeve; the inner diameter of the first ball seat is larger than that of the second ball seat, the first inner sleeve and the outer sleeve are sealed, and the second inner sleeve and the outer sleeve are sealed. The tracer sliding sleeve realizes that the same pipeline of fracturing and production is carried out simultaneously, and can also track the output.
Description
Technical Field
The invention relates to the technical field of oil and gas production equipment, in particular to a tracing sliding sleeve.
Background
The sliding sleeve is an underground tool in oil and gas exploitation, and is widely applied to construction operation of oil wells, gas wells and water injection wells in oil fields.
In order to realize the detection of products of each production layer in the later-stage exploitation process, a tracer device is arranged on the sliding sleeve. In order to make the sliding sleeve multifunctional, the production sliding sleeve and the fracturing sliding sleeve are combined together, namely, one sleeve is adopted to be connected and one channel is used for fracturing and production work. But after the function of fracturing sliding sleeve and production sliding sleeve combines, then can't be combining the tracer device, because the fracturing sliding sleeve carries out fracturing work, fracturing fluid can exert an influence to the tracer device, and fracturing fluid can produce great impact to the tracer device promptly, takes away a large amount of tracers, and the tracer device can be damaged to the serious.
Therefore, the technical problem needs to be solved urgently.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a tracing sliding sleeve, and in order to solve the above problems, the present invention mainly provides the following technical solutions:
the embodiment of the invention provides a tracing sliding sleeve, which comprises:
the pipe wall close to the first end of the outer sleeve is provided with a tracer installation part communicated with the inside and the outside of the outer sleeve;
the inner part of the first inner sleeve is provided with a first ball seat, the first inner sleeve is arranged in the outer sleeve in a penetrating mode, shields the tracer agent mounting part, and is limited with the outer sleeve through a first shearing pin;
a second ball seat is arranged inside the second inner sleeve, the second inner sleeve is arranged in the outer sleeve in a penetrating mode and limited with the outer sleeve through a second shearing pin, the second inner sleeve is close to the second end of the outer sleeve relative to the first inner sleeve, and a through hole is formed in the pipe wall of the outer sleeve at the position corresponding to the second inner sleeve;
the inner diameter of the first ball seat is larger than that of the second ball seat, the first inner sleeve and the outer sleeve are sealed, and the second inner sleeve and the outer sleeve are sealed.
Specifically, the tracer installation part comprises a groove and a cover plate, wherein the groove is formed in the outer wall of the outer sleeve;
the tank bottom of recess is provided with the intercommunication the inside first mesh of overcoat pipe, the apron is provided with and link up the second mesh on apron both sides surface, the apron covers on the recess opening, with the recess forms the space of holding spike agent.
Specifically, the groove is a step-shaped groove and comprises a first step groove and a second step groove which are arranged along the direction from the outer wall of the outer sleeve to the inner wall, the opening area of the first step groove is larger than that of the second step groove, and a threaded hole is formed in a step of the groove;
the cover plate is provided with a step through hole corresponding to the threaded hole, the cover plate is covered on the first step groove in a buckling mode, the cover plate is fixed in the groove through the step through hole and the threaded hole through bolts, and the cover plate is flush with the outer wall of the outer sleeve.
Specifically, the tracer installation portion is a plurality of, and the interval distributes in a week of outer tube pipe wall.
Specifically, the second ball seat is connected to one end, close to the second end of the outer sleeve, of the second inner sleeve, and an annular groove is formed in the inner wall, close to the other end of the second inner sleeve, of the second inner sleeve.
Specifically, the first ball seat and the second ball seat are both annular structures;
the inner wall of the first inner sleeve is in threaded connection with the outer wall of the first ball seat, and the inner wall of the second inner sleeve is in threaded connection with the outer wall of the second ball seat.
Specifically, the first inner sleeve and the second inner sleeve are sequentially and adjacently arranged inside the outer sleeve.
Specifically, the through holes are long round holes and are multiple in number, and the through holes are uniformly arranged on the periphery of the outer sleeve pipe wall at intervals.
Specifically, an annular clamping groove is formed in the inner wall close to the second end of the outer sleeve, an elastic clamping block is arranged on the outer wall of the second inner sleeve, and when the second inner sleeve moves to a position close to the second end of the outer sleeve, the elastic clamping block is clamped with the annular clamping groove.
Specifically, the tracing sliding sleeve provided by the embodiment of the present invention further includes:
a first joint and a second joint;
wherein, the one end of first joint is provided with the external screw thread the first end of outer tube is provided with the internal thread, the one end of first joint stretches into the first end and the threaded connection of outer tube, the one end that the second connects is provided with the external screw thread the second end of outer tube is provided with the internal thread, the one end that the second connects stretches into the second end and the threaded connection of outer tube.
By means of the technical scheme, the tracing sliding sleeve provided by the embodiment of the invention at least has the following advantages:
the tracing sliding sleeve comprises a first inner sleeve with a first ball seat and a second inner sleeve with a second ball seat, and the inner diameter of the first ball seat is larger than that of the second ball seat. Therefore, after the tracing sliding sleeve provided by the embodiment of the invention is arranged on an oil pipe between two packers, the ball body can fall on the second ball seat through the first ball seat by one-time ball throwing, and then fracturing fluid is applied to the pipe sleeve, so that the second ball seat and the second inner sleeve cut the second shearing pin to move towards the second end of the outer sleeve, and at the moment, the through hole is communicated with the inside and the outside of the outer sleeve, and the fracturing work can be implemented. And after fracturing work finishes, can throw the ball for the second time, make the spheroid fall on first ball seat, make first ball seat take first interior sleeve pipe to cut off first shear pin through exerting pressure and move to interior sleeve pipe of second to can shelter from the through-hole, show the tracer installation department simultaneously, make the result can flow into the overcoat intraduct through the tracer installation department, and then output to ground, can continue to realize production work after fracturing work is accomplished promptly, realize the fracturing and two usage of production of a sliding sleeve. And can fill the tracer in the tracer installation part, can trail production thing, make the staff know the kind and the output of the product that sets up the corresponding production zone of tracer sliding sleeve, and then know the product and the output of each production zone of oil well.
Drawings
Fig. 1 is a schematic structural view of a tracking sliding sleeve according to an embodiment of the present invention;
fig. 2 is a schematic view of another view structure of a tracking sliding sleeve according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an outer casing of a tracking sliding sleeve according to an embodiment of the present invention.
The reference numerals in fig. 1 to 3 include:
1-outer sleeve, 11-annular clamping groove, 2-tracer installation part, 21-groove, 211-first mesh, 22-cover plate, 221-second mesh, 3-first inner sleeve, 4-first ball seat, 5-first shearing pin, 6-second inner sleeve, 61-annular groove, 7-second ball seat, 8-second shearing pin, 9-through hole, 10-first joint and 12-second joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-3, an embodiment of the present invention provides a tracking sliding sleeve, which includes: the outer sleeve 1, the first inner sleeve 3 and the second inner sleeve 6; a tracer installation part 2 communicated with the inside and the outside of the outer sleeve 1 is arranged on the pipe wall close to the first end of the outer sleeve 1; a first ball seat 4 is arranged in the first inner sleeve 3, the first inner sleeve 3 penetrates through the outer sleeve 1 to shield the tracer installation part 2, and the first inner sleeve and the outer sleeve 1 are limited through a first shear pin 5; a second ball seat 7 is arranged inside the second inner sleeve 6, the second inner sleeve 6 is arranged in the outer sleeve 1 in a penetrating mode, the position between the second inner sleeve 6 and the outer sleeve 1 is limited through a second shearing pin 8, the second inner sleeve 6 is close to the second end of the outer sleeve 1 relative to the first inner sleeve 3, and a through hole 9 is formed in the pipe wall of the outer sleeve 1 at the position corresponding to the second inner sleeve 6; wherein, the inner diameter of the first ball seat 4 is larger than that of the second ball seat 7, the first inner sleeve 3 is sealed with the outer sleeve 1, and the second inner sleeve 6 is sealed with the outer sleeve 1.
Specifically, the outer sleeve 1, the first inner sleeve 3, the second inner sleeve 6, the first ball seat 4, and the second ball seat 7 are made of corrosion-resistant metal, such as corrosion-resistant steel, and have certain strength. Wherein the connection structure can be reserved at the both ends of outer tube 1 for the sleeve pipe in attach fitting or the oil well, tracer installation department 2 and through-hole 9 on the outer tube 1 pipe wall all are the passageway that can communicate the outer tube 1 inside and outside. In the embodiment of the present invention, the passage formed on the wall of the outer casing 1 by the tracer installation part 2 is used as a production passage, and the passage formed on the wall of the outer casing 1 by the through hole 9 is used as a fracturing passage.
The first inner sleeve 3 is an inner sleeve capable of sliding inside the outer sleeve 1, and is sealed with the outer sleeve 1 by a sealing rubber ring, for example, a plurality of annular sealing grooves are respectively arranged on the outer walls of two ends of the first inner sleeve 3 side by side, a sealing ring is arranged in each sealing groove, and the sealing with the outer sleeve 1 is realized by the sealing ring. The first inner jacket tube 3 needs to be in an initial state in a position where it shields the tracer mounting part 2, i.e. no liquid or gas outside the outer jacket tube 1 can flow through the tracer mounting part 2 into the interior of the outer jacket tube 1 before production starts. The first ball seat 4 may be constructed as a ball seat in the prior art, that is, a ball seat for fracturing, and may be constructed such that one end of a ring has a tapered mouth for receiving a ball. The first ball seat 4 and the first inner sleeve can be fixedly connected or detachably connected.
Similarly, the structure of the second inner sleeve 6 is similar to that of the first inner sleeve 3, and the second inner sleeve 6 is also an inner sleeve capable of sliding inside the outer sleeve 1, and is sealed with the outer sleeve 1 by a sealing rubber ring, for example, a plurality of annular sealing grooves are respectively arranged on the outer walls of two ends of the second inner sleeve 6 side by side, and a sealing ring is arranged in each sealing groove, so that the sealing with the outer sleeve 1 is realized by the sealing ring. The second inner casing 6 needs to be in a position for shielding the through hole 9 in an initial state, that is, liquid or gas outside the outer casing 1 before fracturing work is started cannot flow into the inner casing 1 through the through hole 9. The second ball seat 7 may be of the same construction as the first ball seat 4, for example, as referred to in the prior art, and may be of annular configuration with a tapered mouth at one end for receiving a ball. The second ball seat 7 and the second inner sleeve can be fixedly connected or detachably connected.
Wherein go on in order to realize fracturing and production logical pipeline, need guarantee that the internal diameter of second ball seat 7 is less than the internal diameter of first ball seat 4, and after fracturing work ended, after pressing top first interior sleeve pipe 3 to leaving tracer installation department 2 through the spheroid, need guarantee first interior sleeve pipe 3 and shelter from through-hole 9, make tracer installation department 2 conduct production passageway. Alternatively, in the case where tracer-tracing products are not required, the first inner jacket tube 3 may not shield the through-hole 9, so that the passage formed by the through-hole 9 and the tracer mounting portion 2 serves as a production passage.
The tracing sliding sleeve provided by the embodiment of the invention comprises a first inner sleeve 3 with a first ball seat 4 and a second inner sleeve 6 with a second ball seat 7, wherein the inner diameter of the first ball seat 4 is larger than that of the second ball seat 7. Thus, after the tracing sliding sleeve provided by the embodiment of the invention is installed on an oil pipe between two packers, a ball can be dropped on the second ball seat 7 through the first ball seat 4 by one shot, and then fracturing fluid is applied to the pipe sleeve, so that the second ball seat 7 and the second inner sleeve 6 shear the second shear pin 8 to move towards the second end of the outer sleeve 1, and at the moment, the through hole 9 is communicated with the inside and the outside of the outer sleeve 1, and the fracturing operation can be implemented. And after fracturing work finishes, can throw the ball for the second time, make the spheroid fall on first ball seat 4, make first ball seat 4 take first interior sleeve pipe 3 to cut off first shear pin 5 nail and move to second interior sleeve pipe 6 through exerting pressure, and can shelter from through-hole 9, show tracer installation department 2 simultaneously, make the result can flow into inside outer tube 1 through tracer installation department 2, and then output to ground, can continue to realize production work after fracturing work is accomplished promptly, realize the fracturing and two uses of production of a sliding sleeve. And can fill the tracer in the tracer installation department 2, can trail production thing, make the staff know the kind and the output of the product that sets up the corresponding production zone of tracer sliding sleeve, and then know the product and the output of each production zone of oil well.
As shown in fig. 1-3, in a specific implementation, the tracer mounting portion 2 includes a groove 21 opened on the outer wall of the outer sleeve 1 and a cover plate 22; the tank bottom of recess 21 is provided with the intercommunication the inside first mesh 211 of outer tube 1, apron 22 is provided with and link up the second mesh 221 of apron 22 both sides surface, apron 22 covers on the recess 21 opening, with recess 21 forms the space of holding the tracer.
Specifically, offer recess 21 and form the partly of tracer installation department 2 on the outer wall of outer tube 1 to cover the space that forms the holding tracer through apron 22, this kind of mode can avoid external box body that is used for holding the tracer, simplifies the design of outer tube 1. And outer tube 1 sets up tracer installation department 2 on outer tube 1's pipe wall as the production pipeline, can guarantee oil, gas of output, all pass through tracer installation department 2. Wherein the first mesh 211 may be composed of a plurality of holes arranged in a matrix and the diameter of a single hole is required to be smaller than the particle size of the tracer, and the second mesh 221 may be composed of a plurality of holes arranged in a matrix and the diameter of a single hole is required to be smaller than the particle size of the tracer.
Further, the groove 21 is a step-shaped groove and comprises a first step groove and a second step groove which are arranged along the direction from the outer wall to the inner wall of the outer sleeve 1, the opening area of the first step groove is larger than that of the second step groove, and a threaded hole is formed in a step of the groove 21; the cover plate 22 is provided with a step through hole 9 corresponding to the threaded hole, the cover plate 22 covers the first step groove in a buckling mode, the cover plate 22 is fixed in the groove 21 through bolts penetrating through the step through hole 9 and connected with the threaded hole, and the cover plate 22 is flush with the outer wall of the outer sleeve 1.
Specifically, set up recess 21 as the step type groove to with apron 22 lid in first order groove, apron 22 is the same level with the outer wall of outer tube 1 like this, can make whole tracer installation department 2 be located outer tube 1, avoids protruding outer tube 1, and produces the interference to outer tube 1 low tube.
Wherein, in order to guarantee that the product can be quick inflow outer tube 1's inside, then need all set up the passageway in outer tube 1's a week, so set up tracer installation department 2 into a plurality of and spaced distribution and be in a week of outer tube 1 pipe wall, and be a week of same cross-section, the product of equidirectional all can flow into inside outer tube 1 through tracer installation department 2 like this to output to ground, a plurality of directions all set up tracer installation department 2 moreover, can realize the tracking to the product that a plurality of directions come in the production zone.
In the embodiment shown in fig. 1-3, the second ball seat 7 is connected to one end of the second inner sleeve 6 near the second end of the outer sleeve 1, and an annular groove 61 is formed on the inner wall of the second inner sleeve 6 near the other end.
Specifically, the setting of annular 61 makes the user can catch on annular 61 through the hook after fracturing work and production work begin, promptly first interior sleeve pipe 3 and the interior sleeve pipe 6 voltage sharing of second go into outer tube 1 second end, and then the first end direction motion of sleeve pipe 1 is gone to first interior sleeve pipe 3 in the pulling second, and then shelters from through-hole 9 and tracer installation department 2.
In the specific implementation, as shown in fig. 1 to 3, the inner wall of the first inner sleeve 3 is in threaded connection with the outer wall of the first ball seat 4, and the inner wall of the second inner sleeve 6 is in threaded connection with the outer wall of the second ball seat 7.
In particular, the detachment of the first inner sleeve 3 from the first ball seat 4 and the detachment of the second inner sleeve 6 from the second ball seat 7 can be achieved by a threaded connection. Wherein in order to guarantee the sealing connection between first ball seat 4 and the first interior sleeve pipe 3, can set up the external screw thread at the outer wall of the one end of first ball seat 4, and the outer wall of the other end sets up the seal groove, makes the one end of first ball seat 4 and the inner wall threaded connection of first interior sleeve pipe 3, and the other end outer wall sets up sealed gluey ring and seals. The connection between the second ball seat 7 and the second inner sleeve 6 is the same as for the first ball seat 4 and will not be described further here.
In a specific implementation, as shown in fig. 1-3, the first inner sleeve 3 and the second inner sleeve 6 are arranged inside the outer sleeve 1 in a consecutive and adjacent manner.
In particular, the first inner sleeve 3 and the second inner sleeve 6 may be adjacent or may be separated by a small distance.
As shown in fig. 1 to fig. 3, in a specific implementation, the through holes 9 are long circular holes and are provided in a plurality of numbers, and the through holes 9 are uniformly arranged around the tube wall of the outer sleeve 1 at intervals. The quantity of first shear pin 5 nails also is a plurality of and evenly spaced wears to establish in 1 body a week of outer tube to stretch into first interior sleeve pipe 3 outer wall certain distance and spacing to it, can be threaded connection between first shear pin 5 nails and the outer tube 1, and can set up annular 61 on the first interior sleeve pipe 3 outer wall and come to cooperate with first shear pin 5 nails. Also the second shear pins 8 may be arranged in the same manner and in the same number as the first shear pins 5, and will not be described further here.
In particular implementations, the structure that stops the second inner casing 6 and the second ball seat 7 may be a nipple, or tubing head, provided at the second end of the outer casing 1, since the second inner casing 6 needs to slide with the second ball seat 7 towards the second end of the outer casing 1 during the fracturing operation and needs to stop after a certain distance of movement. In addition, a ring-shaped clamping groove 11 can be further formed in the inner wall close to the second end of the outer sleeve 1, an elastic clamping block, such as an elastic clamping component, a clamping spring, a clamping block and the like commonly used in a mechanical structure, is arranged on the outer wall of the second inner sleeve 6, and when the second inner sleeve 6 moves to a position close to the second end of the outer sleeve 1, the elastic clamping block is clamped with the ring-shaped clamping groove 11. The first inner sleeve 3 may be stopped by abutting against the second inner sleeve 6 as the first ball seat 4 slides towards the second end of the outer sleeve 1.
As shown in fig. 1 to fig. 3, in a specific implementation, the tracking sliding sleeve provided in the embodiment of the present invention further includes:
a first joint 10 and a second joint 12; wherein, the one end of first joint 10 is provided with the external screw thread the first end of outer tube 1 is provided with the internal thread, the one end of first joint 10 stretches into the first end and the threaded connection of outer tube 1, the one end of second joint 12 is provided with the external screw thread the second end of outer tube 1 is provided with the internal thread, the one end of second joint 12 stretches into the second end and the threaded connection of outer tube 1.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. A tracking sliding sleeve, comprising:
the pipe wall close to the first end of the outer sleeve is provided with a tracer installation part communicated with the inside and the outside of the outer sleeve;
the inner part of the first inner sleeve is provided with a first ball seat, the first inner sleeve is arranged in the outer sleeve in a penetrating mode, shields the tracer agent mounting part, and is limited with the outer sleeve through a first shearing pin;
a second ball seat is arranged inside the second inner sleeve, the second inner sleeve is arranged in the outer sleeve in a penetrating mode and limited with the outer sleeve through a second shearing pin, the second inner sleeve is close to the second end of the outer sleeve relative to the first inner sleeve, and a through hole is formed in the pipe wall of the outer sleeve at the position corresponding to the second inner sleeve;
the inner diameter of the first ball seat is larger than that of the second ball seat, the first inner sleeve and the outer sleeve are sealed, and the second inner sleeve and the outer sleeve are sealed.
2. Tracking sliding sleeve according to claim 1,
the tracer installation part comprises a groove and a cover plate, wherein the groove is formed in the outer wall of the outer sleeve;
the tank bottom of recess is provided with the intercommunication the inside first mesh of overcoat pipe, the apron is provided with and link up the second mesh on apron both sides surface, the apron covers on the recess opening, with the recess forms the space of holding spike agent.
3. Tracking sliding sleeve according to claim 2,
the groove is a step-shaped groove and comprises a first step groove and a second step groove which are arranged along the direction from the outer wall of the outer sleeve to the inner wall, the opening area of the first step groove is larger than that of the second step groove, and a threaded hole is formed in the step of the groove;
the cover plate is provided with a step through hole corresponding to the threaded hole, the cover plate is covered on the first step groove in a buckling mode, the cover plate is fixed in the groove through the step through hole and the threaded hole through bolts, and the cover plate is flush with the outer wall of the outer sleeve.
4. Tracking sliding sleeve according to claim 2,
the tracer installation department is a plurality of, and the interval distributes in a week of outer tube pipe wall.
5. Tracking sliding sleeve according to claim 1,
the second ball seat is connected in the second interior sleeve pipe is close to the one end of outer tube second end, is close to the inner wall of the second interior sleeve pipe other end is provided with the annular.
6. Tracking sliding sleeve according to claim 1,
the first ball seat and the second ball seat are both annular structures;
the inner wall of the first inner sleeve is in threaded connection with the outer wall of the first ball seat, and the inner wall of the second inner sleeve is in threaded connection with the outer wall of the second ball seat.
7. Tracking sliding sleeve according to claim 1,
the first inner sleeve and the second inner sleeve are sequentially and adjacently arranged in the outer sleeve.
8. Tracking sliding sleeve according to claim 1,
the through holes are long round holes, the number of the through holes is multiple, and the through holes are uniformly arranged on the periphery of the outer sleeve pipe wall at intervals.
9. Tracking sliding sleeve according to claim 1,
and an annular clamping groove is formed in the inner wall close to the second end of the outer sleeve, an elastic clamping block is arranged on the outer wall of the second inner sleeve, and when the second inner sleeve moves to a position close to the second end of the outer sleeve, the elastic clamping block is clamped with the annular clamping groove.
10. The tracking sliding sleeve of claim 1, further comprising:
a first joint and a second joint;
wherein, the one end of first joint is provided with the external screw thread the first end of outer tube is provided with the internal thread, the one end of first joint stretches into the first end and the threaded connection of outer tube, the one end that the second connects is provided with the external screw thread the second end of outer tube is provided with the internal thread, the one end that the second connects stretches into the second end and the threaded connection of outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420726.XA CN111101894A (en) | 2019-12-31 | 2019-12-31 | Tracer sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420726.XA CN111101894A (en) | 2019-12-31 | 2019-12-31 | Tracer sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111101894A true CN111101894A (en) | 2020-05-05 |
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ID=70425964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911420726.XA Pending CN111101894A (en) | 2019-12-31 | 2019-12-31 | Tracer sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111101894A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427421A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Sand control fracturing integrated device |
| CN114837613A (en) * | 2022-05-12 | 2022-08-02 | 安东石油技术（集团）有限公司 | Sand control fracturing ball injection sliding sleeve |
-
2019
- 2019-12-31 CN CN201911420726.XA patent/CN111101894A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427421A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Sand control fracturing integrated device |
| CN114837613A (en) * | 2022-05-12 | 2022-08-02 | 安东石油技术（集团）有限公司 | Sand control fracturing ball injection sliding sleeve |
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