CN212614601U - Intubation type releasing joint - Google Patents
Intubation type releasing joint Download PDFInfo
- Publication number
- CN212614601U CN212614601U CN202021607979.6U CN202021607979U CN212614601U CN 212614601 U CN212614601 U CN 212614601U CN 202021607979 U CN202021607979 U CN 202021607979U CN 212614601 U CN212614601 U CN 212614601U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- joint
- assembly
- pawl
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to an intubation type releasing joint, which mainly comprises an upper joint, a mandrel assembly, a pawl and a sealing outer barrel. The mandrel assembly is characterized in that a pawl is arranged between the upper connector and the mandrel assembly, an upper connector and a sealing outer barrel are arranged on the outer side of the pawl, the sealing outer barrel is arranged on the outer side of the mandrel assembly, the mandrel assembly is composed of an upper mandrel, a lower mandrel and a pressing cap which are connected with each other, a sealing component is arranged on the outer side of the upper mandrel, and a sealing component is arranged on the outer side of the lower mandrel. The utility model discloses abandon the setting of traditional releasing device transposition groove, reduce the possibility that the transposition is not in place in the well head operation process, reduce special wellholes such as deep well, inclined shaft, horizontal well to the influence of tubular column, improve the success rate that the tubular column was released for the block water shutoff releasing technology has had more selections.
Description
Technical Field
The utility model relates to a formation testing well completion engineering field, more specifically say, relate to an intubation type joint of giving up.
Background
With the gradual deepening of oil and gas field development, most old oil areas of various high-strength oil fields enter a high-water-content exploitation stage, special wells such as deep wells, inclined wells, directional wells and horizontal wells in new drilling wells are more and more, and the layering of oil layers is more and more refined. In the later development stage, finding water plugging is an important process measure for improving the recovery ratio of the oil field; the mechanical layered blocking water and oil production technology is reliable and easy to implement, and becomes a method commonly adopted by western oil fields. Meanwhile, the hydraulic packer is matched with the water blocking and layering process pipe column of the releasing tool, and the hydraulic packer is more and more widely applied to complex well conditions such as deep wells, horizontal wells, inclined wells, directional wells and the like by virtue of the advantages that the packer is not influenced by well repairing operations such as a pump detection and the like and alternating load action and the like. From the whole releasing process pipe column, the performance of the releasing tool is the key of the success or failure of the releasing process pipe column. The traditional mechanical releasing device is influenced by the well depth, well deviation and drilling fluid performance, the transposition is difficult, and the releasing operation is difficult; the hydraulic releasing device cannot realize back-plugging fishing operation due to structural restriction.
Disclosure of Invention
The to-be-solved technical problem lies in that, a intubation type release joint is provided, can effectually reduce also to have solved the unable back plug scheduling problem in later stage simultaneously by the influence of well condition, improve stifled water process efficiency greatly, realize adapting to various operating modes, provide powerful guarantee for production after the completion of oil gas well, the smooth of increasing production measure.
The utility model relates to an intubation type joint of giving up, include: one end of the mandrel assembly is fixedly connected with an upper joint, and the outside and the other end of the mandrel assembly are coated by a sealing sleeve; a pawl is arranged at the contact position of the sealing sleeve and the upper joint; the shaft core assembly comprises an upper core shaft, a lower core shaft and a pressing cap which are connected in sequence, the upper core shaft, the lower core shaft and the pressing cap are wrapped by a sealing sleeve, a convex shoulder is arranged on the outer side of the upper core shaft, an annular groove is arranged on one side of the convex shoulder, and a pawl is fixedly arranged between the upper core shaft and the annular groove; and a through hole is formed in the position, close to the upper mandrel, of the sealing sleeve and used for installing a retaining nail, and the retaining nail penetrates through the through hole and is fixedly connected with the other side of the upper mandrel shoulder.
In the above scheme, the front ends of the upper joint and the upper mandrel are provided with the first O-shaped sealing ring.
In the scheme, the upper joint is connected with the upper mandrel of the mandrel assembly through threads.
In the above scheme, the front ends of the upper joint and the upper mandrel are provided with the first O-shaped sealing ring.
In the above scheme, a first sealing assembly is arranged between the upper mandrel and the sealing sleeve.
In the above scheme, a second sealing assembly is arranged between the lower mandrel and the sealing sleeve.
In the above scheme, the end part of the threaded connection between the upper mandrel and the lower mandrel is provided with the second O-shaped sealing ring.
In the above scheme, the end part of the threaded connection between the lower mandrel and the pressing cap is provided with a third O-shaped sealing ring.
The utility model also provides a use method of intubate formula joint of giving up, including following step:
after the setting and the seal checking of the hydraulic packer are qualified, when the hydraulic packer is in a setting and seal checking operation, the pipe column is rotated forward 14-15 circles under the condition of slight tension, the backstop pin on the insert pipe type release joint is firstly cut off, so that the thread buckle of the insert pipe type release joint mandrel assembly is gradually screwed out of the sealing outer cylinder, and the pipe column is lifted up, thereby realizing the release;
when the pipe column needs to be inserted back, after the outer sealing cylinder of the insertion pipe type releasing joint is washed, the pipe column is directly pressed down, and the telescopic thread buckle can be clamped into a thread buckle groove in the lower sealing outer cylinder; under the extrusion action of the mandrel of the upper joint of the insertion pipe type releasing joint, the special threads are tightly fastened and tightly bitten in the fastening groove of the sealing outer cylinder, and the original well pipe column can be taken out by lifting the pipe column.
Implement the utility model discloses an intubation type joint of giving up has following beneficial effect:
1. the utility model discloses a change the setting of traditional transposition groove for reduced the not in place possibility of transposition in the well head operation, reduced special wellheads such as deep well, inclined shaft, horizontal well to the influence of tubular column.
2. The plug-in pipe type releasing joint is subjected to rotary tripping and pin shearing releasing, so that negative effects on screw threads at other parts of a pipe string are not easily generated in the releasing operation process, the plug-in pipe type releasing joint is also suitable for releasing operation of a mechanical packer, and the reliability and the application range of water plugging operation are greatly improved.
3. Compare with original traditional joint of giving up, the utility model discloses the type utensil is high temperature resistant, and tensile strength is big, and special screw thread detains the ingenious cooperation with the top connection mandrel, has also solved the problem of back inserting, interlock well.
4. The advantages of the mechanical and hydraulic releasing device at the early stage are integrated, so that more choices are provided in the water blocking and releasing process.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic structural view of the insertion tube type releasing joint of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in figure 1, the utility model discloses intubation type joint of giving up includes: one end of the mandrel assembly is fixedly connected with an upper joint 1, and the outside and the other end of the mandrel assembly are covered by a sealing sleeve 11; a pawl 3 is arranged at the contact position of the sealing sleeve 11 and the upper joint 1; the shaft core assembly comprises an upper core shaft 4, a lower core shaft 7 and a pressing cap 10 which are connected in sequence, the upper core shaft 4, the lower core shaft 7 and the pressing cap are wrapped by a sealing sleeve 11, a convex shoulder is arranged on the outer side of the upper core shaft 4, an annular groove is arranged on one side of the convex shoulder, and the pawl 3 is fixedly arranged between the upper core shaft 4 and the annular groove; and a through hole is formed in the position, close to the upper mandrel 4, of the sealing sleeve 11 and used for installing a retaining nail 12, and the retaining nail 12 penetrates through the through hole and is fixedly connected with the other side of the shoulder of the upper mandrel 4.
The upper joint 1 is connected with the upper mandrel 4 through threads; a first O-shaped sealing ring 2 is arranged between the upper joint 1 and the upper mandrel 4; the pawl 3 is connected with the sealing outer cylinder 11 through threads; the upper mandrel 4 is connected with the lower mandrel 7 through threads; the lower mandrel 7 is connected with the pressing cap 10 through threads; a second O-shaped sealing ring 6 is arranged between the upper mandrel 4 and the lower mandrel 7; a third O-shaped sealing ring 9 is arranged between the lower mandrel 7 and the pressing cap 10; and a backstop pin 12 is arranged between the sealing outer cylinder 11 and the upper mandrel 4.
It is specific, intubate formula joint of giving up and technology tubular column can be applied to in the oil field production in the layering transformation, separate layer water injection, separate layer oil recovery, separate layer well-flushing, last pipeline section, giving up joint and lower pipeline section that concatenate in proper order including top-down have packer and/or hanger that has reversing mechanism in wherein the lower pipeline section, at the in-process that the technology tubular column was carrying out the setting and the deblocking like this, need rotatory technology tubular column, the setting and the deblocking that carry out the technology tubular column through reversing mechanism's switching-over.
When not in use, the relative fixation between the sealing sleeve 11 and the upper mandrel 4 is achieved by means of the retaining nail 12: the retaining nail 12 penetrates through a through hole formed in the sealing sleeve 11 and is fixedly connected with the upper mandrel 4, so that the relative fixation of the positions of the sealing sleeve 11 and the upper mandrel 4 is realized. Even if the upper mandrel 4 and the sealing sleeve 11 cannot move relative to each other at this time. After the retaining nail 12 is cut off, the thread buckle of the pawl 3 can be gradually screwed out of the sealing outer cylinder 11 through the thread arranged on the mandrel assembly. The pipe column is sleeved outside the release, when the release is operated, the pawl 3 is extended out, the pipe column is rotated forward for 14-15 circles only under the condition that the pipe column is slightly pulled, the backstop pin 12 on the insertion pipe type release joint is firstly cut off, then the pawl 3 thread buckle always supported on the upper portion of the insertion pipe type release joint is gradually screwed out of the sealing outer cylinder 11, and the pipe column is lifted up, so that the release is realized. When the pipe column needs to be inserted back, the pipe column is directly pressed down, and the retractable pawl 3 can be clamped into the thread buckle groove in the lower sealing outer cylinder 11 through the thread buckle. Under the extrusion action of the mandrel of the upper joint of the insertion pipe type releasing joint, the special threads are tightly fastened and tightly bitten in the catching groove of the sealing outer cylinder 11, and the original well pipe column can be taken out by lifting the pipe column.
When the releasing joint is used for setting operation, the process pipe column in the embodiment is lowered to a designed position, then the process pipe column is rotated, so that the reversing mechanisms of the packer and the hanger are reversed, and setting is pressed; and when the deblocking is needed, reversely rotating the process pipe column for deblocking.
Furthermore, the utility model also provides a using method of intubate formula joint of giving up, specifically include following step:
after the setting and the seal checking of the hydraulic packer are qualified, in the releasing operation, the pipe column is rotated forward 14-15 circles under the condition of slight tension, the backstop pin 12 on the insert pipe type releasing joint is firstly cut off, then the pawl 3 thread buckle always supported on the upper part of the insert pipe type releasing joint is gradually screwed out of the sealing outer cylinder 11, and the pipe column is lifted up, so that the releasing is realized.
When the pipe column needs to be inserted back, after the outer sealing cylinder 11 of the insertion pipe type releasing joint is washed, the pipe column is directly pressed down, and the retractable pawl 3 thread buckle can be clamped into the thread buckle groove in the lower sealing outer cylinder 11. Under the extrusion action of the mandrel of the upper joint of the insertion pipe type releasing joint, the special threads are tightly fastened and tightly bitten in the catching groove of the sealing outer cylinder 11, and the original well pipe column can be taken out by lifting the pipe column.
Implement the utility model discloses an intubation type joint of giving up and method of giving up thereof has following beneficial effect:
1. the utility model discloses a change the setting of traditional transposition groove for reduced the not in place possibility of transposition in the well head operation, reduced special wellheads such as deep well, inclined shaft, horizontal well to the influence of tubular column.
2. The plug-in pipe type releasing joint is subjected to rotary tripping and pin shearing releasing, so that negative effects on screw threads at other parts of a pipe string are not easily generated in the releasing operation process, the plug-in pipe type releasing joint is also suitable for releasing operation of a mechanical packer, and the reliability and the application range of water plugging operation are greatly improved.
3. Compare with original traditional joint of giving up, the utility model discloses the type utensil is high temperature resistant, and tensile strength is big, and special screw thread detains the ingenious cooperation with the top connection mandrel, has also solved the problem of back inserting, interlock well.
4. The advantages of the mechanical and hydraulic releasing device at the early stage are integrated, so that more choices are provided in the water blocking and releasing process.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (8)
1. The intubation type releasing joint is characterized by comprising a mandrel assembly, wherein one end of the mandrel assembly is fixedly connected with an upper joint, and the outside and the other end of the mandrel assembly are coated by a sealing sleeve; a pawl is arranged at the contact position of the sealing sleeve and the upper joint; the mandrel assembly comprises an upper mandrel, a lower mandrel and a pressing cap which are connected in sequence, the upper mandrel, the lower mandrel and the pressing cap are wrapped by a sealing sleeve, a convex shoulder is arranged on the outer side of the upper mandrel, an annular groove is arranged on one side of the convex shoulder, and a pawl is fixedly arranged between the upper mandrel and the annular groove; the position of the sealing sleeve close to the upper mandrel is provided with a through hole for installing a retaining nail, and the retaining nail penetrates through the through hole and is fixedly connected with the other side of the upper mandrel shoulder.
2. The stinger release joint of claim 1, wherein the upper joint is threadably connected to the upper mandrel of the mandrel assembly.
3. The stinger release joint of claim 2, wherein a first O-ring seal is disposed between the upper joint and the front end of the upper mandrel.
4. The stinger release coupling of claim 1, wherein the pawl is threadably engaged with the outer seal barrel.
5. The stinger release joint of claim 1, wherein a first seal assembly is disposed between the upper mandrel and the seal sleeve.
6. The stinger release joint of claim 1, wherein a second seal assembly is disposed between the lower mandrel and the seal sleeve.
7. The stinger release joint of claim 1, wherein a second O-ring seal is provided at the end of the threaded connection between the upper mandrel and the lower mandrel.
8. The stinger release coupling of claim 1, wherein the end of the threaded connection between the lower mandrel and the crimp cap is provided with a third O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021607979.6U CN212614601U (en) | 2020-08-05 | 2020-08-05 | Intubation type releasing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021607979.6U CN212614601U (en) | 2020-08-05 | 2020-08-05 | Intubation type releasing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212614601U true CN212614601U (en) | 2021-02-26 |
Family
ID=74729469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021607979.6U Active CN212614601U (en) | 2020-08-05 | 2020-08-05 | Intubation type releasing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212614601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852367A (en) * | 2020-08-05 | 2020-10-30 | 中石化石油工程技术服务有限公司 | Intubation type releasing joint and using method thereof |
| CN112796695A (en) * | 2021-01-26 | 2021-05-14 | 四川省威沃敦化工有限公司 | Back-inserting mechanism of split type well completion packer |
-
2020
- 2020-08-05 CN CN202021607979.6U patent/CN212614601U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852367A (en) * | 2020-08-05 | 2020-10-30 | 中石化石油工程技术服务有限公司 | Intubation type releasing joint and using method thereof |
| CN112796695A (en) * | 2021-01-26 | 2021-05-14 | 四川省威沃敦化工有限公司 | Back-inserting mechanism of split type well completion packer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212614601U (en) | Intubation type releasing joint | |
| WO2016101374A1 (en) | Bridge plug having large drift diameter and setting method thereof | |
| CN110593777B (en) | Double-gradient drilling string disconnecting and tieback device without marine riser | |
| CN109138856B (en) | coiled tubing connector | |
| CN201262045Y (en) | Hydraulic back-off sub used for oil well water block | |
| CN111042767B (en) | Horizontal well segmented acidizing filling sand prevention integrated tubular column and method | |
| CN111852367A (en) | Intubation type releasing joint and using method thereof | |
| CN210087252U (en) | Underground continuous pipe cable separation sealing adapter | |
| CA2839377C (en) | Sleeve fracturing assembly, device using the same and method for using the same | |
| CN111980610A (en) | CO2Water alternate injection well completion pipe string, water alternate injection well completion method and water alternate injection well service pipe string | |
| CN112709546A (en) | Pipeline crossing type efficient suspension releasing packer and method | |
| CN113374430A (en) | Large-drift-diameter differential pressure type multifunctional releasing tool | |
| CN115538971A (en) | Tail pipe head leakage well secondary well completion pipe string and well completion method | |
| CN210049071U (en) | A slip casting pipe for minimally invasive slip casting is repaired | |
| CN112483011A (en) | Plug-in type underground flexible continuous composite pipe connecting joint and connecting method | |
| CN201738873U (en) | Device integrating bridge plug and perforation used for continuous oil pipe operation | |
| CN201943648U (en) | Temporary plugging device for gas well tie-back cementing | |
| CN210483560U (en) | Non-rotary joint for continuous pipe | |
| CN114718501B (en) | Quick tieback sealing device for sleeve and operation method thereof | |
| CN216477248U (en) | Oil pipe blanking plug | |
| CN216812842U (en) | Multi-sealing sleeve patch connector | |
| CN217382010U (en) | Oil field operation pipeline connector | |
| CN212774228U (en) | Ground layer protection device for ball valve type downhole operation | |
| CN217681613U (en) | Outer slip connector for petroleum well completion | |
| CN201372734Y (en) | Concentric oil pipe device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |