CN211598548U - Coiled tubing well drilling hydraulic control release device - Google Patents

Coiled tubing well drilling hydraulic control release device Download PDF

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Publication number
CN211598548U
CN211598548U CN202020175930.1U CN202020175930U CN211598548U CN 211598548 U CN211598548 U CN 211598548U CN 202020175930 U CN202020175930 U CN 202020175930U CN 211598548 U CN211598548 U CN 211598548U
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CN
China
Prior art keywords
release
coiled tubing
well
locking claw
short section
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.)
Expired - Fee Related
Application number
CN202020175930.1U
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Chinese (zh)
Inventor
范玉斌
朱庆利
吴艳华
杨育升
张勇
唐琳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinopec Oilfield Service Corp
Sinopec Shengli Petroleum Engineering Corp
Downhole Operation Co Sinopec of Shengli Petroleum Engineering Corp
Original Assignee
Sinopec Oilfield Service Corp
Sinopec Shengli Petroleum Engineering Corp
Downhole Operation Co Sinopec of Shengli Petroleum Engineering Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sinopec Oilfield Service Corp, Sinopec Shengli Petroleum Engineering Corp, Downhole Operation Co Sinopec of Shengli Petroleum Engineering Corp filed Critical Sinopec Oilfield Service Corp
Priority to CN202020175930.1U priority Critical patent/CN211598548U/en
Application granted granted Critical
Publication of CN211598548U publication Critical patent/CN211598548U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a coiled tubing well drilling hydraulic control release device, this hydraulic control release device is equipped with top connection, upper body, release piston, upper release cylinder, lock claw and stays well nipple joint, the top connection is equipped with the centre bore, the upper body is equipped with fluid passage, stays well nipple joint and is equipped with the liquid flow hole, the top connection is connected with upper body, upper release cylinder and lock claw in proper order, the release piston is installed in the lock claw and is connected with upper release cylinder through the shearing pin; the well-remaining short section is locked below the upper release barrel by the locking claw, and the lower part of the well-remaining short section is connected with the outer barrel through a release pin. The utility model discloses can reduce the engineering time of extracting the pit shaft with coiled tubing and the emergence of other accidents in the pit that probably cause, show the processing time who has shortened the sticking accident, protect the various instruments of connecting among the coiled tubing, improve the success rate and the salvage efficiency of salvage operation.

Description

Coiled tubing well drilling hydraulic control release device
Technical Field
The utility model relates to a petroleum industry coiled tubing well drilling construction appurtenance, especially coiled tubing well drilling hydraulic control release.
Background
In coiled tubing drilling or sidetracking drilling construction in the petroleum industry, a screw drill and a drill bit for coiled tubing drilling or sidetracking drilling are generally connected to the lowermost end of a drilling tool, and are the first tools which directly contact with and drill through the formation. Due to uncertainty of stratum lithology, complex drilling sticking accidents such as stratum collapse and hard rock encountering can occur in the drilling construction process, and the screw drill and the drill bit for drilling the coiled tubing can be completely buried underground, so that the situation that the coiled tubing cannot be pulled out of a shaft is caused, and the drilling sticking accidents are complicated.
In order to prevent the occurrence of drilling sticking accidents of a coiled tubing drilling downhole drilling tool and prepare for the next fishing operation, the current general method is to connect a safety joint above the coiled tubing power drilling tool which is used for drilling the well, when the drilling sticking accidents occur in the drilling construction process, tools below the safety joint are all thrown in the well through the safety joint, and the coiled tubing above and the connected tools are lifted out of a shaft. Then, a proper fishing tool is put in for fishing so as to shorten the processing time of the shaft and improve the fishing efficiency.
However, the use of safety joints in coiled tubing drilling has the following drawbacks: because conventional safety joints are directly connected to the uppermost end of the tool string in a conventional drill string, drilling with coiled tubing or sidetracking is different because of the need to run control or measurement cables through the coiled tubing that need to be connected to the tool string connected in the coiled tubing. Because the safety joint of the traditional structure can not pass through the cable, the safety joint can only be connected above the screw drill tool at the lowest end in the coiled tubing tool string in series. Therefore, when the drill is strongly lifted in the event of a drill clamping accident, the screw drill can be pulled off only from the position of the screw drill, and the purpose of safe disengagement can be achieved. However, since the upper part of the safety joint is also provided with a tool string consisting of other tools such as hydraulic control tools, etc., a certain tool in the tool string may be disengaged during the process of lifting with great force, and due to the existence of the tools, if the tool string is lifted with great force in a horizontal well section, the lifting force of the wellhead can be decomposed into a great part at the dog leg, so that the fishing is easy to fail or the downhole tools are damaged, thereby complicating the fishing operation.
And for the releasing joint used in the conventional drilling string, the well head is pressed and directly released through the central channel of the well descending string, but the coiled tubing cannot be used for coiled tubing drilling construction and cannot achieve the purpose of well head pressing and releasing due to the fact that a plurality of hydraulic control tools are connected in the middle of the coiled tubing and no hydraulic channel exists in the middle of the coiled tubing.
In view of the above two reasons, it is necessary to design a special release device for coiled tubing drilling construction, which solves the problem of lack of release device at coiled tubing drilling construction site.
Disclosure of Invention
The utility model aims at providing a coiled tubing well drilling hydraulic control release, when solving and taking place the card brill accident in present coiled tubing well drilling, the sidetracking well construction, lack special releasing tool, can not bore the screw rod and the problem of releasing safely in the pit with the drill bit, improve the success rate of salvaging the operation and salvage efficiency, reduce construction cost.
In order to solve the above problem, the utility model discloses a realize like this:
the coiled tubing drilling hydraulic control release device is provided with an upper joint, an upper body, a release piston, an upper release cylinder, a locking claw and a well-remaining short section, wherein the upper joint is provided with a central hole, the upper body is provided with a liquid channel, the well-remaining short section is provided with a liquid flow hole, the upper joint is sequentially connected with the upper body, the upper release cylinder and the locking claw, and the release piston is arranged in the locking claw and is connected with the upper release cylinder through a shearing pin; the well-remaining short section is locked below the upper release barrel by the locking claw, and the lower part of the well-remaining short section is connected with the outer barrel through a release pin.
The excircle of the release piston is a non-isodiametric excircle, the excircle of the upper part of the release piston can be suspended on a shear pin connecting step on the inner wall of the upper release cylinder, and the excircle of the lower part of the release piston is provided with a locking claw clamping groove.
The upper portion of the locking claw is a cylindrical body, an external thread is arranged on the excircle of the cylindrical body and can be in threaded connection with the upper release cylinder, an inner clamping table and a locking outer boss are respectively arranged on the inner wall of the lower portion of the locking claw and the outer wall of the lower end of the locking claw, and the lower portion of the locking claw is divided into elastic claw-shaped structures by an axial through groove.
The inner clamping tables are matched with the claw clamping grooves of the release pistons, the number of the inner clamping tables is consistent with that of the claw clamping grooves, when the shearing pins are broken and the release pistons move downwards, the outer circle of the upper portion of the release pistons is just hung on the shearing pin connecting step on the inner wall of the upper release cylinder, and the inner clamping tables of the claws are just clamped into the claw clamping grooves of the release pistons.
The locking outer boss is matched with a locking groove in the inner wall of the well-reserving nipple, and the locking groove is an annular groove and is arranged in the inner wall of the upper portion of the well-reserving nipple.
The central hole of the upper joint can be connected with a hydraulic control device in the coiled tubing through a hydraulic control pipeline.
The upper part of the outer barrel can be connected with the coiled tubing.
Stay the lower part excircle of well nipple joint and be equipped with the screw thread, can bore threaded connection with the screw rod, stay the liquid flow hole in the well nipple joint and be equipped with one row at least and be located the barrel of urceolus, the liquid flow hole link up with the centre bore of staying the well nipple joint.
The utility model discloses a show the effect and be: when coiled tubing is used for drilling or sidetracking construction, the release device is connected above a screw drill in a coiled tubing drilling string, and the release device is connected with a hydraulic control device in the coiled tubing through a hydraulic control pipeline. When the drilling process is stuck and the shaft cannot be pulled out by a conventional method and the next construction cannot be effectively carried out, the hydraulic control device and the hydraulic control pipeline connected in the releasing device can control the releasing piston to move downwards and release the locking claw locked in the well-remaining short section, so that the upper releasing cylinder in the device is separated from the well-remaining short section, the releasing pin between the outer cylinder and the well-remaining short section is cut off in the well-falling process of the well-remaining short section, the screw drill and the drill bit connected below the device can be safely released underground without being vigorously lifted, the coiled tubing and other tool strings connected in the coiled tubing lower well string are lifted out of the shaft, and the problem that the coiled tubing drilling does not have a special releasing tool is solved. Then, the screw drill and the drill bit are fished by other suitable fishing tools. Therefore, the construction time for pulling the coiled tubing out of the shaft and other possible underground accidents are reduced, the handling time of the stuck drilling accident is obviously shortened, various tools connected in the coiled tubing are protected, the success rate and the fishing efficiency of fishing operation are improved, and the coiled tubing fishing tool has obvious economic and social benefits and good use effect and application value.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following detailed description of the present invention with reference to the drawings is not intended to limit the scope of the present invention, and all the modifications of the present invention belong to the protection category.
Referring to fig. 1, the coiled tubing drilling hydraulic control release device is provided with an upper joint 1, an upper body 3, a release piston 6, an upper release cylinder 8, a locking claw 9 and a well-remaining short section 12, wherein the upper joint 1 is provided with a central hole, the upper body 3 is provided with a liquid channel 4, the well-remaining short section 12 is provided with a liquid flow hole 15, the upper joint 1 is sequentially connected with the upper body 3, the upper release cylinder 8 and the locking claw 9, and the release piston 6 is installed in the locking claw 9 and is connected with the upper release cylinder 8 through a shearing pin 7; the well-leaving short section 12 is locked below the upper release cylinder 8 by the locking claw 9, and the lower part of the well-leaving short section 12 is connected with the outer cylinder 5 through a release pin 16.
The excircle of the release piston 6 is a non-isometric excircle, the excircle of the upper part of the release piston 6 can be suspended on a shear pin connecting step on the inner wall of the upper release cylinder 8, and the excircle of the lower part of the release piston 6 is provided with a locking claw clamping groove 11.
The upper part of the locking claw 9 is a cylindrical body, the outer circle of the cylindrical body is provided with an external thread which can be in threaded connection with the upper release cylinder 8, the inner wall of the lower part of the locking claw 9 and the outer wall of the lower end of the locking claw 9 are respectively provided with an inner clamping platform 10 and a locking outer boss 14, and the lower part of the locking claw 9 is divided into an elastic claw-shaped structure by an axial through groove.
The inner clamping platforms 10 are matched with the locking claw clamping grooves 11 of the release piston 6, the number of the inner clamping platforms 10 is consistent with that of the locking claw clamping grooves 11, when the shearing pin 7 is broken and the release piston 6 moves downwards, the outer circle of the upper portion of the release piston 6 is just hung on the shearing pin connecting step on the inner wall of the upper release cylinder 8, and the inner clamping platforms 10 of the locking claws 9 are also just clamped into the locking claw clamping grooves 11 of the release piston 6, so that conditions are created for releasing the device.
Locking outer boss 14 cooperatees with the locking groove 13 who stays well nipple 12 inner wall, and locking groove 13 is the annular groove, sets up in the upper portion inner wall that stays well nipple 12, plays the connection effect between locking claw 9 and the well nipple 12 of staying.
The central hole of the upper joint 1 can be connected with a hydraulic control device in the coiled tubing through a hydraulic control pipeline.
The upper part of the outer cylinder 5 can be connected with a coiled tubing.
Leave the lower part excircle of well nipple joint 12 and be equipped with the screw thread, can drill threaded connection with the screw rod, leave the liquid flow hole 15 in well nipple joint 12 and be equipped with one row at least and be located the barrel of urceolus 5, liquid flow hole 15 link up with the centre bore of leaving well nipple joint 12, as the passageway that overflows of drilling fluid.
The interior of the device can receive hydraulic fluid applied by a hydraulic control device, hydraulic pressure can be applied to the release piston 6, and after the shearing pin 7 is sheared, the upper release cylinder 8, the locking claw 9, the upper body 3 and the upper joint 1 can be separated from the device and can be brought to the ground by a continuous oil pipe. During normal drilling, drilling fluid can enter the well reserving short section 12 and a screw drill connected below from the fluid hole 15 through an annular space between the outer cylinder 5 and the upper release cylinder 8.
The use method of the device comprises the following steps: when coiled tubing drilling or sidetracking drilling is carried out, the releasing device is installed in a tubular column of a coiled tubing well, the upper joint 1 is connected with a hydraulic control device in the coiled tubing well through a hydraulic control pipeline, the upper part of the outer barrel 5 is connected with the coiled tubing, and the lower part of the well-remaining short section 12 is connected above a screw drill.
In the drilling process of the well drilling, if the drilling tool is stuck and the coiled tubing cannot be pulled out of a shaft by a conventional method and the next construction cannot be effectively carried out, a hydraulic control device in the coiled tubing can be operated on the ground, and pressure is applied to the release piston 6 through a hydraulic control pipeline, so that the release piston is released. At the moment, the liquid enters the device through the liquid channel 4 by controlling the pressurizing through a hydraulic control device in the coiled tubing, the liquid forces the release piston 6 to move downwards to shear the shear pin 7, and the release piston 6 stops moving downwards when the shear pin on the inner wall of the upper release cylinder 8 is connected with the step. At the moment, the inner clamping table 10 of the locking claw 9 is just clamped into the locking claw clamping groove 11 of the release piston 6, the outer lug boss 14 of the locking claw is also separated from the locking groove 13, so that the well-reserved short section 12 is separated from the locking claw 9 and falls off, the screw drill and the drill bit which are connected with the well-reserved short section 12 are cut off in the falling process, the release pin 16 is cut off, at the moment, the coiled tubing and other tool strings connected in the coiled tubing downhole string can be lifted out of a shaft, and the screw drill and the drill bit are lost in the well. Then, the screw drill and the drill bit are fished by other suitable fishing tools.
The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Many variations, combinations, and modifications of the aspects disclosed herein are possible and are within the scope of the invention, which is, therefore, not to be limited by the above description.

Claims (8)

1. The hydraulic control release device for the continuous oil pipe drilling is characterized by comprising an upper joint, an upper body, a release piston, an upper release cylinder, a locking claw and a well-remaining short section, wherein the upper joint is provided with a central hole, the upper body is provided with a liquid channel, the well-remaining short section is provided with a liquid flow hole, the upper joint is sequentially connected with the upper body, the upper release cylinder and the locking claw, and the release piston is arranged in the locking claw and is connected with the upper release cylinder through a shearing pin; the well-remaining short section is locked below the upper release barrel by the locking claw, and the lower part of the well-remaining short section is connected with the outer barrel through a release pin.
2. The coiled tubing drilling hydraulic pressure control release device of claim 1, wherein the outer circle of the release piston is a non-constant diameter outer circle, the outer circle of the upper portion of the release piston can be hung on a shear pin connecting step on the inner wall of the upper release cylinder, and the outer circle of the lower portion of the release piston is provided with a locking claw clamping groove.
3. The coiled tubing drilling hydraulic pressure control release device of claim 2, wherein the upper part of the locking claw is a cylindrical body, the outer circle of the cylindrical body is provided with an external thread which can be connected with the upper release cylinder in a threaded manner, the inner wall of the lower part and the outer wall of the lower end of the locking claw are respectively provided with an inner clamping platform and a locking outer boss, and the lower part of the locking claw is divided into an elastic claw-shaped structure by the axial through groove.
4. The coiled tubing drilling hydraulic control release device of claim 3, wherein the inner clamping platforms are matched with the locking claw clamping grooves of the release piston, the number of the inner clamping platforms is consistent with that of the locking claw clamping grooves, when the shear pins are broken and the release piston moves downwards, the upper outer circle of the release piston just hangs on the shear pin connecting step on the inner wall of the upper release cylinder, and the inner clamping platforms of the locking claws just clamp into the locking claw clamping grooves of the release piston.
5. The coiled tubing drilling hydraulic control release device of claim 3, wherein the locking external boss mates with a locking groove in the inner wall of the well-leaving nipple, the locking groove being an annular groove disposed in the upper inner wall of the well-leaving nipple.
6. The coiled tubing drilling fluid pressure control release device of claim 1, wherein the central bore of the top sub is connectable to a fluid control device in the coiled tubing via a fluid control line.
7. The coiled tubing drilling fluid pressure control release device of claim 1, wherein an upper portion of the outer barrel is connectable to coiled tubing.
8. The coiled tubing drilling hydraulic pressure control release device of claim 5, wherein the outer circle of the lower part of the well leaving short section is provided with threads and can be in threaded connection with a screw drill, the liquid flow hole in the well leaving short section is provided with at least one row and is positioned in the cylinder body of the outer cylinder, and the liquid flow hole is communicated with the central hole of the well leaving short section.
CN202020175930.1U 2020-02-17 2020-02-17 Coiled tubing well drilling hydraulic control release device Expired - Fee Related CN211598548U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020175930.1U CN211598548U (en) 2020-02-17 2020-02-17 Coiled tubing well drilling hydraulic control release device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020175930.1U CN211598548U (en) 2020-02-17 2020-02-17 Coiled tubing well drilling hydraulic control release device

Publications (1)

Publication Number Publication Date
CN211598548U true CN211598548U (en) 2020-09-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020175930.1U Expired - Fee Related CN211598548U (en) 2020-02-17 2020-02-17 Coiled tubing well drilling hydraulic control release device

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113153192A (en) * 2021-01-13 2021-07-23 西南石油大学 Hydraulic claw tool for preventing drill jamming and blocking

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113153192A (en) * 2021-01-13 2021-07-23 西南石油大学 Hydraulic claw tool for preventing drill jamming and blocking
CN113153192B (en) * 2021-01-13 2022-03-01 西南石油大学 Hydraulic claw tool for preventing drill jamming and blocking

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200929

Termination date: 20210217

CF01 Termination of patent right due to non-payment of annual fee