CN114059962A - Multiple sealed high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device - Google Patents
Multiple sealed high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device Download PDFInfo
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- CN114059962A CN114059962A CN202111469656.4A CN202111469656A CN114059962A CN 114059962 A CN114059962 A CN 114059962A CN 202111469656 A CN202111469656 A CN 202111469656A CN 114059962 A CN114059962 A CN 114059962A
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- sliding sleeve
- sealing
- temperature well
- well injection
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- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
- E21B33/1212—Packers; Plugs characterised by the construction of the sealing or packing means including a metal-to-metal seal element
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
- E21B33/1216—Anti-extrusion means, e.g. means to prevent cold flow of rubber packing
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- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/01—Sealings characterised by their shape
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
A blowout-preventing sliding sleeve device for injection and production of a multi-seal high-pressure high-temperature well belongs to the technical field of oil and gas exploitation. Comprises a suspension joint (21), an outer sliding sleeve, a sliding device and a sliding sleeve spring (14); an outer sliding sleeve is arranged at the bottom of the suspension joint (21); the outer sliding sleeve is internally provided with a sliding device, and a sliding sleeve spring (14) is fixedly arranged on the sliding device. Has the advantages that: the sealing device has the characteristics of multiple sealing capabilities of sliding sleeve sealing and conical surface sealing, good pressure and temperature resistance, wide applicability, simple structure, convenience in use, safety and reliability.
Description
Technical Field
The invention relates to a multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device, and belongs to the technical field of oil and gas production.
Background
In the production operation of oil field, various technical measures of injection and extraction process often need to close or open fluid passages of different oil (gas) layers, such as layered injection of gas (steam) and layered oil extraction. At present, a bridge plug sealing layer is usually used for an oil and gas well, and the bridge plug is fished out or damaged when a liquid flow channel needs to be opened.
On the other hand, the existing shaft bottom blowout preventer is controlled by a cable or a capillary tube, has a certain application range (not suitable for high-temperature conditions), is high in cost and complex in operation, and cannot meet the requirement of opening at any time for operation and production at any time.
Disclosure of Invention
The invention aims to provide a multiple-sealing high-pressure high-temperature well injection-production blowout prevention sliding sleeve device which has the characteristics of multiple sealing capabilities of sliding sleeve sealing and conical surface sealing, good pressure and temperature resistance, wide applicability, simple structure, convenience in use, safety and reliability.
In order to achieve the purpose, the application provides a multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device which comprises a suspension joint, an outer sliding sleeve, a sliding device and a sliding sleeve spring; an outer sliding sleeve is arranged at the bottom of the suspension joint; the outer sliding sleeve is internally provided with a sliding device, and a sliding sleeve spring is fixedly arranged on the sliding device.
Further, the outer sliding sleeve comprises an upper outer sliding sleeve and a lower outer sliding sleeve; the top of the upper outer sliding sleeve is provided with a suspension joint, and the bottom of the upper outer sliding sleeve is provided with a lower outer sliding sleeve.
Furthermore, the suspension joint is in threaded connection with the upper outer sliding sleeve.
Furthermore, the upper outer sliding sleeve and the lower outer sliding sleeve are in threaded connection.
Furthermore, the outer wall of the lower outer sliding sleeve is provided with a circular boss.
Furthermore, the suspension joint is provided with a suspension joint connecting thread.
Furthermore, the sliding device comprises a stable structure, a lower inner sliding sleeve, an inner short connector and a guide cone which are sequentially arranged from top to bottom.
Further, the stabilizing structure comprises a sealing cone, a sealing cone spring stabilizing column, a sealing cone supporting leg, a sealing cone spring and an upper inner sliding sleeve; the sealing cone spring stabilizing column extends into the bottom of the sealing cone; the sealing cone spring stabilizing column is sleeved with a sealing cone spring, the other end of the sealing cone spring is welded on a spring seat, the spring seat is arranged at the bottom of the upper inner sliding sleeve, and the sealing cone supporting foot are integrated.
Furthermore, the upper inner sliding sleeve is fixedly connected with the lower inner sliding sleeve.
Furthermore, the upper inner sliding sleeve and the lower inner sliding sleeve are connected in a welding mode.
Furthermore, a plurality of sealing cone through holes are formed in the sealing cone.
Furthermore, a circular groove is formed in the bottom of the sealing cone, and the diameter of the circular groove is larger than the outer diameter of the spring stabilizing column of the sealing cone.
Furthermore, the circular groove is in threaded connection with the sealing conical spring stabilizing column to form an annular groove for mounting the sealing conical spring.
Further, the depth of the annular groove is smaller than the length of the sealing cone spring stabilizing column.
Furthermore, the length of the sealing cone supporting foot is smaller than that of the upper inner sliding sleeve.
Furthermore, an inner sliding sleeve limiting convex edge is arranged outside the upper inner sliding sleeve.
Furthermore, a plurality of inner sliding sleeve sealing rings arranged in parallel are arranged on the concave surface of the inner sliding sleeve limiting convex edge; the concave surface of the inner sliding sleeve limiting convex edge is provided with a plurality of limiting convex edge sealing rings which are arranged in parallel.
Furthermore, the inner wall of the upper outer sliding sleeve is provided with a limit boss.
Furthermore, the outer wall of the upper outer sliding sleeve is provided with a plurality of outer sliding sleeve vent holes.
Furthermore, an inner sliding sleeve sealing ring is arranged on the lower inner sliding sleeve.
Furthermore, the lower part inner sliding sleeve forms sealing with the lower part outer sliding sleeve through the inner sliding sleeve sealing ring.
Furthermore, the sealing ring is sleeved in a groove of the lower inner sliding sleeve.
Further, the outer diameter of the lower inner sliding sleeve is smaller than that of the inner sliding sleeve sealing ring; the outer diameter of the sealing ring of the inner sliding sleeve is smaller than the inner diameter of the outer sliding sleeve at the lower part.
Furthermore, the lower inner sliding sleeve is connected with one end of the inner short circuit through a lower connecting thread of the upper inner sliding sleeve.
Furthermore, the guide cone is connected with the other end of the inner short connector through a guide cone connecting thread on the guide cone.
Furthermore, the bottom of the suspension joint is provided with an inverted V-shaped section matched with the sealing cone.
Furthermore, the sliding sleeve spring is a counter-top wave spring.
Further, the sliding sleeve spring is a counter-top wave spring.
Furthermore, the upper part of the sliding sleeve spring is fixed on the dentate boss of the lower outer sliding sleeve, and the top of the sliding sleeve spring is positioned under the fixed pressing cap of the lower outer sliding sleeve.
Furthermore, the sliding sleeve spring between the fixed pressing cap and the toothed boss of the lower outer sliding sleeve is fixedly connected.
Furthermore, the fixed pressing cap, the toothed boss of the lower outer sliding sleeve and the sliding sleeve spring are fixed by welding.
Further, the fixed pressing cap is connected with the external thread of the lower outer sliding sleeve through a fixed pressing cap connecting thread.
Furthermore, the inner short circuit is provided with a tooth-shaped boss.
Furthermore, a sliding sleeve spring is fixedly arranged on the dentate boss.
Furthermore, the bottom of the sliding sleeve spring is arranged on the guide cone, and the sliding sleeve spring is sleeved on the toothed boss and then fixedly welded with the spring between the guide cone and the sliding sleeve spring.
Furthermore, the inner wall of the upper outer sliding sleeve is provided with a limiting boss and a limiting convex edge of the inner sliding sleeve to form metal conical surface sealing.
Furthermore, the convex surface of the limiting convex edge of the inner sliding sleeve and the concave surface of the upper outer sliding sleeve form sealing through the limiting convex edge sealing ring.
Furthermore, the concave surface of the limiting convex edge of the inner sliding sleeve and the convex surface of the upper outer sliding sleeve form sealing through the sealing ring of the inner sliding sleeve.
Further, the suspension joint is matched with an external insertion pipe for use.
Furthermore, the insertion pipe sleeve is provided with a plurality of groups of insertion pipe sealing rings which are arranged in parallel.
Further, the insert pipe sealing ring forms a seal with the inner wall of the suspension joint.
Further, the outer diameter of the insertion pipe is smaller than the inner diameter of the suspension joint.
Furthermore, an insertion pipe through hole is formed in the insertion pipe.
Further, the bottom of the insertion pipe is arranged on the sealing cone to form a seal.
Furthermore, a guide cone through hole is formed in the bottom of the guide cone.
Has the advantages that:
compared with the prior well bottom blowout preventer, the invention has the following advantages:
1) it is multifunctional, and can be matched with different operation pipe columns and equipment strings, and is applicable to the layered operation of various injection and production processes of water injection, steam injection (gas), oil production and steam production.
2) The downhole blowout prevention valve has the function of a downhole blowout prevention valve, and can be used for opening or closing a production layer or performing maintenance operation on a downhole pipe column and a wellhead device at any time under the conditions of no well killing, no blowout and no use of an oil pipe plug.
3) The pipe fitting is made of a stainless steel austenite material subjected to solution treatment by using a stainless steel alloy, and has better wear resistance, corrosion resistance and toughness; the cone head of the sealing cone adopts a TiC (titanium carbide) material and a high-finish surface processing technology, and has high surface hardness and high yield strength; the sealing rings at different positions adopt the multiple matching of the double V-shaped sealing rings made of flexible expanded graphite and elastic temperature-resistant polymer materials, and can meet the requirements of high-pressure and high-temperature well conditions.
4) The conical surface seal has higher sealing specific pressure, and is more suitable for sealing under long-term high pressure conditions compared with other hard seal forms (such as spherical seal and the like).
5) The meshed opposite-vertex wave spring has high elastic force, is more durable and stable in various performances than a spiral spring (such as the spring can bear large torque and is aging-resistant, and the performance of the whole meshed spring cannot be influenced even if individual meshed keys are damaged), and can stabilize the stable action of the opening and closing action of the sliding sleeve in the axial direction without deflection.
6) The switch is simple and reliable, and the operation is simple and has high success rate.
Drawings
FIG. 1 is a schematic structural view of a multiple-seal high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device;
FIG. 2 is a schematic cross-sectional view of a multiple seal high pressure high temperature well injection and production blowout prevention sliding sleeve device;
FIG. 3 is a schematic cross-sectional view of an insertion tube;
fig. 4 is a schematic sectional view of the metal cone seal b.
The sequence numbers in the figures illustrate: 1. a cannula passageway; 2. sealing a with a metal conical surface; 3. sealing the cone; 4. sealing the conical through hole; 5. sealing the conical spring stabilizing post; 6. sealing the cone supporting leg; 7. a sealing conical spring; 8. an upper inner sliding sleeve; 10. an inner sliding sleeve sealing ring; 11. a lower inner sliding sleeve; 12. fixing the pressing cap; 13. the fixed pressing cap is connected with threads; 14. a sliding sleeve spring; 15. the lower part of the inner sliding sleeve is connected with a thread; 16. interconnecting short circuit; 18. the guide cone is connected with a thread; 19. a guide cone; 20. connecting threads on the suspension joint; 21. a suspension joint; 23. an upper outer sliding sleeve; 24. an inner sliding sleeve sealing ring; 25. a limiting convex edge sealing ring; 26. the inner sliding sleeve limits the convex edge; 27. a spring seat; 29. an inner and outer sliding sleeve sliding cavity; 30. a lower outer sliding sleeve; 31. a vertebra guide through hole; 32. an insert tube sealing ring; 33. an insertion tube; 34. an insertion tube through hole; 35. outer sliding sleeve through holes, 36 and metal conical surface seal b.
Detailed Description
The invention is described in further detail below with reference to the accompanying figures 1 to 4 and the specific examples: the present application is further described by taking this as an example.
Example 1
As shown in fig. 1, the present embodiment provides a multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device, which includes a suspension joint 21, an outer sliding sleeve, a sliding device, and a sliding sleeve spring 14; the bottom of the suspension joint 21 is provided with an outer sliding sleeve; the outer sliding sleeve is internally provided with a sliding device, and a sliding sleeve spring 14 is fixedly arranged on the sliding device.
The outer sliding sleeve comprises an upper outer sliding sleeve 23 and a lower outer sliding sleeve 30; the top of the upper outer sliding sleeve 23 is provided with a suspension joint 21, and the bottom of the upper outer sliding sleeve 23 is provided with a lower outer sliding sleeve 30.
The suspension joint 21 is in threaded connection with the upper outer sliding sleeve 23.
The upper outer sliding sleeve 23 and the lower outer sliding sleeve 30 are in threaded connection.
The outer wall of the lower outer sliding sleeve 30 is provided with a circular boss.
And the suspension joint 21 is provided with suspension joint connecting threads 20.
The sliding device comprises a stable structure, a lower inner sliding sleeve 11, an inner short joint 16 and a guide cone 19.
The stabilizing structure comprises a sealing cone 3, a sealing cone spring stabilizing column 5, a sealing cone supporting leg 6, a sealing cone spring 7 and an upper inner sliding sleeve 8; the sealing cone spring stabilizing column 5 extends into the bottom of the sealing cone 3; 5 overcoat of sealed conical spring stabilizer column be equipped with sealed conical spring 7, the welding of the sealed conical spring 7 other end is on spring holder 27, spring holder 27 fix in upper portion 8 bottoms of inner sliding sleeve, sealed awl (3) and sealed awl spike (6) are integrative.
And the upper inner sliding sleeve 8 is fixedly connected with the lower inner sliding sleeve 11.
The upper inner sliding sleeve 8 is connected with the lower inner sliding sleeve 11 in a welding way.
The sealing cone 3 is provided with a plurality of sealing cone through holes 4.
The bottom of the sealing cone 3 is provided with a circular groove, and the diameter of the circular groove is larger than the outer diameter of the spring stabilizing column 5 of the sealing cone.
The circular groove is in threaded connection with the sealing conical spring stabilizing column 5 to form an annular groove for installing the sealing conical spring 7.
The depth of the annular groove is less than the length of the sealing cone spring stabilizing column 5.
The length of the sealing cone supporting foot 6 is less than that of the upper inner sliding sleeve 8.
An inner sliding sleeve limiting convex edge 26 is arranged outside the upper inner sliding sleeve 8.
The concave surface of the inner sliding sleeve limiting convex edge 26 is provided with a plurality of inner sliding sleeve sealing rings 24 which are arranged in parallel; the concave surface of the inner sliding sleeve limiting convex edge 26 is provided with a plurality of limiting convex edge sealing rings 25 which are arranged in parallel.
The inner wall of the upper outer sliding sleeve 23 is provided with a limit boss.
The outer wall of the upper outer sliding sleeve 23 is provided with a plurality of outer sliding sleeve vent holes 35.
And an inner sliding sleeve sealing ring 10 is arranged on the lower inner sliding sleeve 11.
The lower inner sliding sleeve 11 forms a seal with the lower outer sliding sleeve 30 through the inner sliding sleeve sealing ring 10.
The sealing ring (10) is sleeved in the groove of the lower inner sliding sleeve (11).
The outer diameter of the lower inner sliding sleeve (11) is smaller than that of the inner sliding sleeve sealing ring (10); the outer diameter of the inner sliding sleeve sealing ring (10) is smaller than the inner diameter of the lower outer sliding sleeve (30).
The outer diameter of the lower inner sliding sleeve 11 is smaller than that of the inner sliding sleeve sealing ring 10.
The outer diameter of the inner sliding sleeve sealing ring 10 is smaller than the inner diameter of the lower outer sliding sleeve 30.
The lower inner sliding sleeve 11 is connected with one end of an inner short connector 16 through a lower connecting thread 15 of the upper inner sliding sleeve.
The guide cone 19 is connected with the other end of the inner short joint 16 through the guide cone connecting thread 18 on the guide cone.
The bottom of the suspension joint 21 is provided with an inverted V-shaped section matched with the sealing cone 3.
The sliding sleeve spring 14 is a counter-top wave spring.
The upper part of the sliding sleeve spring 14 is fixed on the dentate boss of the lower outer sliding sleeve 30, and the top of the sliding sleeve spring 14 is positioned under the fixed pressing cap 12 of the lower outer sliding sleeve 30.
The sliding sleeve spring 14 between the fixed pressing cap 12 and the toothed boss of the lower outer sliding sleeve 30 is fixedly connected.
The fixed pressing cap 12, the toothed bosses of the lower outer sliding sleeve 30 and the sliding sleeve spring 14 are fixed by welding.
The fixed pressing cap 12 is connected with the external thread of the lower outer sliding sleeve 30 through a fixed pressing cap connecting thread 13.
The inner short circuit 16 is provided with a tooth-shaped boss.
And a sliding sleeve spring 14 is fixedly arranged on the toothed boss.
The bottom of the sliding sleeve spring 14 is arranged on the guide cone 19, and the sliding sleeve spring 14 is sleeved on the toothed boss and fixed with the spring between the guide cone 19 by welding.
The inner wall of the upper outer sliding sleeve 23 is provided with a limit boss and a limit convex edge 26 of the inner sliding sleeve to form a metal conical surface seal 36.
The convex surface of the inner sliding sleeve limiting convex edge 26 and the concave surface of the upper outer sliding sleeve 23 form sealing through a limiting convex edge sealing ring 25.
The concave surface of the inner sliding sleeve limiting convex edge 26 and the convex surface of the upper outer sliding sleeve 23 form sealing through the inner sliding sleeve sealing ring 24.
The suspension joint 21 is used in conjunction with an external insertion tube 33.
The insertion tube 33 is sleeved with a plurality of groups of insertion tube sealing rings 32 which are arranged in parallel.
The insert tube sealing ring 32 forms a seal with the inner wall of the hanger adapter 21.
The outer diameter of the insertion tube 33 is smaller than the inner diameter of the suspension joint 21.
The insertion tube 33 is provided with an insertion tube through hole 34.
The bottom of the insertion tube 33 is arranged on the sealing cone 3 to form a seal.
The bottom of the guide cone 19 is provided with a guide cone through hole 31.
The suspension joint 21 is connected with a suspension packer through an upper connecting thread 21; the sealing cone 3 and the sealing cone surface at the lower end of the intubation channel 1 form a forced sealing structure for sealing the intubation channel 1; the sealing cone spring stabilizing column 5, the sealing cone spring 7, the sealing cone bearing foot 6, the upper inner sliding sleeve 8 and the spring seat 26 form a stable structure moving up and down together; in an initial state, the sealing cone spring 7 enables the sealing cone 3 to have large upward elastic force, so that the sealing cone 3 and the channel 1 form conical surface sealing; the sealing cone 3 is provided with a plurality of sealing cone through holes 4 which are communicated with the inner layer and the outer layer of the sealing cone 3; the upper inner sliding sleeve 8 and the lower inner sliding sleeve 11 are welded to form a whole; the multiple groups of inner sliding sleeve sealing rings 10, the inner sliding sleeve sealing rings 24 and the limiting convex edge sealing rings 25 play a role in sealing the inner sliding sleeve and the outer sliding sleeve; the limit convex edge sealing ring 25 in the upper inner sliding sleeve 8 is matched with the limit convex edge 26 of the inner sliding sleeve to realize soft sealing when the inner sliding sleeve slides up and down in the outer sliding sleeve sliding cavity 29.
The upper outer sliding sleeve 23 and the lower outer sliding sleeve 30 are connected through threads to form a complete outer sliding sleeve structure; the inner sliding sleeve limiting convex edge 26 and the upper outer sliding sleeve 23 are provided with a conical surface seal 36 at the contact position; the top of the sliding sleeve spring 14 is sleeved on the toothed boss of the lower outer sliding sleeve 30 by utilizing the special waveform structure of the sliding sleeve spring 14, and the sliding sleeve spring 14 and the sliding sleeve spring are matched with each other to fix the top and then are welded into an integral structure; the bottom of the sliding sleeve spring 14 is sleeved on the toothed boss of the inner short circuit 16, and the sliding sleeve spring 14 and the inner short circuit are matched with each other to fix the bottom of the sliding sleeve spring 14 and then are welded into an integral structure; the lower inner sliding sleeve 11 and the guide cone 19 are connected together through an inner short circuit 16 and play a role in stabilizing the movement of the spring; the upper outer sliding sleeve 23 is provided with an outer sliding sleeve through hole 35 to realize the communication of the inner and outer sliding sleeves; the guide cone 19 is provided with a through hole 31 for realizing the communication between the inside and the outside of the inner sliding sleeve 11.
The upper outer sliding sleeve 23, the lower outer sliding sleeve 30, the fixed pressing cap 12, the stable structure and the lower inner sliding sleeve 11 can be made of stainless steel austenite materials through solution treatment of stainless steel alloy, and have better wear resistance, corrosion resistance and toughness; the cone head of the sealing cone 3 is made of TiC (titanium carbide) and has high surface hardness and high yield strength by adopting a surface processing technology with high finish; the sealing rings at different positions adopt the multiple matching of the double V-shaped sealing rings made of flexible expanded graphite and elastic temperature-resistant polymer materials, and can meet the requirements of high-pressure and high-temperature well conditions.
Example 2
The device is generally used in combination with a releasing packer, is put into a preset position of an oil and gas well, is released and then is put out of a running pipe column, and an anchoring seat of the packer is sealed in a casing pipe.
In the initial state, the device is in a closed state, the device is provided with two conical surface seals, namely a metal conical surface seal a 2 formed by the insertion tube 33 and the sealing cone 3 and a metal conical surface seal b 36 formed by the limiting convex edge of the inner sliding sleeve at the upper part of the sliding cavity, the conical surface seals and the sliding sleeve seals form a multiple effective sealing mechanism, and a pressure balance cavity structure is naturally formed between the conical surface seals and the inner and outer sliding sleeves, so that effective sealing can be realized under the condition of higher pressure.
The opening of the device of the invention is shown in fig. 3: the inserting tube 33 is inserted into the inserting tube channel 1, the multiple sealing rings 32 on the inserting tube 33 form sealing with the smooth inner surface of the inserting tube channel 1, and meanwhile, the conical surface of the lower end of the inserting tube is contacted with the metal sealing cone 3 to form a new metal conical surface seal a 2; a stable structure which moves up and down is arranged between the sealing cone 3 and the inner sliding sleeve, and the insert tube 33 compresses the sealing cone spring 7 by means of the gravity of the tubular column to ensure that the sealing cone 3 moves down; after the sealing cone supporting foot 6 is sleeved with the upper part inner sliding sleeve, the inner sliding sleeve is continuously pressed to move downwards, at the moment, the inner sliding sleeve limiting convex edge 26 slides downwards in the outer sliding sleeve sliding cavity 29, and the reticular stabilizing spring 14 is stretched; the inner sliding sleeve limiting convex edge 26 stops when being blocked at the lower edge of the sliding sleeve sliding cavity 29, and at the moment, the insertion pipe through hole 34, the outer sliding sleeve through hole 35 and the sealing cone through hole 4 form a stable fluid channel. Through the channel, gas production, oil production, water injection and gas (steam) injection operations can be carried out, namely, the ventilation channel is opened.
The closing mode of the device of the invention is as follows: when the stinger 33 is advanced, the device of the present invention closes under high pressure well conditions and under the combined action of the sliding sleeve spring 14 and the sealing cone spring 7. At this point, the original sealing state is restored, i.e., the closing of the vent passage is achieved.
The soft sealing through hole 31 formed by the elastic material sealing ring realizes the pressure balance of the inside and outside communication of the inner sliding sleeve 11.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments and is not intended to limit the practice of the invention to these embodiments. For those skilled in the art to which the invention pertains, several simple deductions or substitutions may be made without departing from the spirit of the invention, which should be construed as belonging to the protection of the present invention.
Claims (44)
1. A multiple sealing high pressure high temperature well injection and production blowout prevention sliding sleeve device is characterized by comprising a suspension joint (21), an outer sliding sleeve, a sliding device and a sliding sleeve spring (14); an outer sliding sleeve is arranged at the bottom of the suspension joint (21); the outer sliding sleeve is internally provided with a sliding device, and a sliding sleeve spring (14) is fixedly arranged on the sliding device.
2. The multiple sealing high pressure high temperature well injection and production blowout prevention sliding sleeve device according to claim 1, wherein the outer sliding sleeve comprises an upper outer sliding sleeve (23) and a lower outer sliding sleeve (30); the top of the upper outer sliding sleeve (23) is provided with a suspension joint (21), and the bottom of the upper outer sliding sleeve (23) is provided with a lower outer sliding sleeve (30).
3. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device is characterized in that the suspension joint (21) is in threaded connection with the upper outer sliding sleeve (23).
4. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 2, wherein the upper outer sliding sleeve (23) and the lower outer sliding sleeve (30) are in threaded connection.
5. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 4, wherein the outer wall of the lower outer sliding sleeve (30) is provided with a circular boss.
6. The multiple sealing high-pressure high-temperature well injection-production blowout prevention sliding sleeve device is characterized in that a suspension joint connecting thread (20) is arranged on the suspension joint (21).
7. The multiple sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 1, wherein the sliding device comprises a stabilizing structure, a lower inner sliding sleeve (11), an inner short joint (16) and a guide cone (19) which are sequentially arranged from top to bottom.
8. The multiple sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 7, wherein the stabilizing structure comprises a sealing cone (3), a sealing cone spring stabilizing column (5), a sealing cone supporting foot (6), a sealing cone spring (7) and an upper inner sliding sleeve (8); the sealing cone spring stabilizing column (5) extends into the bottom of the sealing cone (3); sealed conical spring stabilizer post (5) overcoat be equipped with sealed conical spring (7), sealed conical spring (7) other end welding is on spring holder (27), spring holder (27) in upper portion sliding sleeve (8) bottom, sealed awl (3) and sealed awl spike (6) are integrative.
9. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 8, wherein the upper inner sliding sleeve (8) is fixedly connected with the lower inner sliding sleeve (11).
10. The multiple sealing high-pressure high-temperature well injection-production blowout prevention sliding sleeve device is characterized in that the upper inner sliding sleeve (8) and the lower inner sliding sleeve (11) are in welded connection.
11. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 8, wherein a plurality of sealing cone through holes (4) are formed in the sealing cone (3).
12. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device is characterized in that a circular groove is formed in the bottom of the sealing cone (3), and the diameter of the circular groove is larger than the outer diameter of the spring stabilizing column (5) of the sealing cone.
13. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 12, wherein the annular groove is in threaded connection with the sealing conical spring stabilizing column (5) to form an annular groove for installing the sealing conical spring (7).
14. The multiple-seal high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device according to claim 13, wherein the depth of the annular groove is smaller than the length of the seal conical spring stabilizing column (5).
15. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 8, wherein the length of the sealing cone supporting leg (6) is smaller than that of the upper inner sliding sleeve (8).
16. The multiple sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 8, wherein an inner sliding sleeve limiting convex edge (26) is arranged outside the upper inner sliding sleeve (8).
17. The multiple sealing high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 16, wherein a plurality of inner sliding sleeve sealing rings (24) arranged in parallel are arranged on the concave surface of the inner sliding sleeve limiting convex edge (26); the concave surface of the inner sliding sleeve limiting convex edge (26) is provided with a plurality of limiting convex edge sealing rings (25) which are arranged in parallel.
18. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 2, wherein the inner wall of the upper outer sliding sleeve (23) is provided with a limiting boss.
19. The multiple sealing high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 2, wherein a plurality of outer sliding sleeve vent holes (35) are formed in the outer wall of the upper outer sliding sleeve (23).
20. The multiple sealing high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 7, wherein an inner sliding sleeve sealing ring (10) is arranged on the lower inner sliding sleeve (11).
21. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 20, wherein the lower inner sliding sleeve (11) forms a seal with the lower outer sliding sleeve (30) through an inner sliding sleeve sealing ring (10).
22. The multiple sealing high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 20, wherein the sealing ring (10) is sleeved in a groove of the lower inner sliding sleeve (11).
23. The multiple sealing high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 22, wherein the outer diameter of the lower inner sliding sleeve (11) is smaller than the outer diameter of the inner sliding sleeve sealing ring (10); the outer diameter of the inner sliding sleeve sealing ring (10) is smaller than the inner diameter of the lower outer sliding sleeve (30).
24. The multiple sealing high pressure high temperature well injection and production blowout prevention sliding sleeve device according to claim 20, wherein the lower inner sliding sleeve (11) is connected with one end of the inner short connector (16) through the lower connecting thread (15) of the upper inner sliding sleeve.
25. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device is characterized in that the guide cone (19) is connected with the other end of the inner short circuit (16) through a guide cone connecting thread (18) on the guide cone connecting sliding sleeve device.
26. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device is characterized in that the bottom of the suspension joint (21) is provided with an inverted V-shaped section matched with the sealing cone (3).
27. The multiple-seal high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device according to claim 1, wherein the sliding sleeve spring (14) is a counter-top wave spring.
28. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 27, wherein the upper part of the sliding sleeve spring (14) is fixed on the toothed boss of the lower outer sliding sleeve (30), and the top part of the sliding sleeve spring (14) is located below the fixed pressing cap (12) of the lower outer sliding sleeve (30).
29. The multiple-seal high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device according to claim 28, wherein the sliding sleeve spring (14) between the fixed pressing cap (12) and the toothed boss of the lower outer sliding sleeve (30) is fixedly connected.
30. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 29, wherein the fixed pressing cap (12) and the toothed bosses of the lower outer sliding sleeve (30) are fixed to the sliding sleeve spring (14) by welding.
31. The multiple-sealing high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 30, wherein the fixed pressing cap (12) is connected with the external thread of the lower outer sliding sleeve (30) through a fixed pressing cap connecting thread (13).
32. The multiple-seal high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device according to claim 24, wherein the inner short connector (16) is provided with a toothed boss.
33. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 32, wherein a sliding sleeve spring (14) is fixedly arranged on the toothed boss.
34. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 33, wherein the bottom of the sliding sleeve spring (14) is arranged on the guide cone (19), and the sliding sleeve spring (14) is sleeved on the toothed boss and then fixed with the guide cone (19) by welding.
35. The multiple sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 19, wherein the inner wall of the upper outer sliding sleeve (23) is provided with a limiting boss to form a metal conical surface seal b (36) with a limiting convex edge (26) of the inner sliding sleeve.
36. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 35, wherein the convex surface of the limiting convex edge (26) of the inner sliding sleeve and the concave surface of the upper outer sliding sleeve (23) form a seal through the limiting convex edge sealing ring (25).
37. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 36, wherein the concave surface of the limiting convex edge (26) of the inner sliding sleeve and the convex surface of the upper outer sliding sleeve (23) form a seal through the sealing ring (24) of the inner sliding sleeve.
38. The multiple-seal high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device is characterized in that the suspension joint (21) is matched with an external insert pipe (33) for use.
39. The multiple-seal high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device according to claim 38, wherein the insert pipe (33) is sleeved with a plurality of groups of insert pipe sealing rings (32) which are arranged in parallel.
40. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 39, wherein the insert pipe sealing ring (32) forms a seal with the inner wall of the suspension joint (21).
41. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 40, wherein the outer diameter of the insert pipe (33) is smaller than the inner diameter of the suspension joint (21).
42. The multiple-seal high-pressure high-temperature well injection-production blowout prevention sliding sleeve device according to claim 40, wherein the insert pipe (33) is provided with an insert pipe through hole (34).
43. The multiple-seal high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device is characterized in that the bottom of the insert pipe (33) is arranged on the sealing cone (3) to form a seal.
44. The multiple-sealing high-pressure high-temperature well injection-production blowout-preventing sliding sleeve device is characterized in that a guide cone through hole (31) is formed in the bottom of the guide cone (19).
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| CN202111469656.4A CN114059962B (en) | 2021-12-03 | 2021-12-03 | Injection-production blowout-preventing sliding sleeve device for multiple sealing high-pressure high-temperature well |
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| CN202111469656.4A CN114059962B (en) | 2021-12-03 | 2021-12-03 | Injection-production blowout-preventing sliding sleeve device for multiple sealing high-pressure high-temperature well |
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| CN114059962A true CN114059962A (en) | 2022-02-18 |
| CN114059962B CN114059962B (en) | 2023-09-08 |
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| US4632187A (en) * | 1984-05-24 | 1986-12-30 | Otis Engineering Corporation | Well safety and kill valve |
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| CN107013179A (en) * | 2017-06-13 | 2017-08-04 | 山东威德福高原人工举升装备有限公司 | One kind has underground blow-out preventing device and method in rod recovering system oil pipe |
| CN108505970A (en) * | 2012-03-07 | 2018-09-07 | 哈里伯顿制造服务有限公司 | Underground equipment and flow control method |
| CN109707344A (en) * | 2019-03-15 | 2019-05-03 | 东北石油大学 | A kind of multifunctional oil gas casing down-hole switch |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4632187A (en) * | 1984-05-24 | 1986-12-30 | Otis Engineering Corporation | Well safety and kill valve |
| CN101307680A (en) * | 2008-06-03 | 2008-11-19 | 潍坊盛德石油机械制造有限公司 | Screw drilling tool by-pass valve |
| CN101806200A (en) * | 2010-03-19 | 2010-08-18 | 中国石油天然气股份有限公司 | Interlaminar multistep control valve used for well completion |
| CN108505970A (en) * | 2012-03-07 | 2018-09-07 | 哈里伯顿制造服务有限公司 | Underground equipment and flow control method |
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| CN114059962B (en) | 2023-09-08 |
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