CN210685933U - Drilling tool check valve ejecting device - Google Patents
Drilling tool check valve ejecting device Download PDFInfo
- Publication number
- CN210685933U CN210685933U CN201921693040.3U CN201921693040U CN210685933U CN 210685933 U CN210685933 U CN 210685933U CN 201921693040 U CN201921693040 U CN 201921693040U CN 210685933 U CN210685933 U CN 210685933U
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- China
- Prior art keywords
- drilling tool
- check valve
- hole
- sliding sleeve
- nut sliding
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- Expired - Fee Related
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Abstract
The utility model discloses a drilling tool check valve ejection device, a lower barrel of an ejection device body is provided with a male thread matched with a female thread of a drilling tool check valve connector, the top surface of the ejection device body is provided with an upward flow discharge channel communicated with the lower barrel, the center of the top surface of the jacking device body is provided with a boss which is communicated with the lower barrel and is provided with two axial stages of through holes, the upper end of the ejector rod is provided with a screw thread, the lower end of the ejector rod is provided with a limiting block, the screw thread at the upper end of the ejector rod is sleeved with a nut sliding sleeve, the nut sliding sleeve is connected with the screw thread of the ejector rod and is matched with the upper through hole, the nut sliding sleeve is just placed in the upper through hole of the boss, the outer side wall of the nut sliding sleeve is provided with a limiting hole, the side wall of the opposite boss is provided with a through screw hole, the nut sliding sleeve is limited in the upper through hole by screwing the limiting screw into the limiting hole which penetrates through the screw hole and is propped against the outer side wall of the nut sliding sleeve. The utility model is suitable for the check valves of drilling tools produced by different structures or manufacturers; and the device is safer and more convenient when being disassembled.
Description
Technical Field
The utility model relates to a drilling tool check valve, especially a drilling tool check valve backs down device.
Background
In the drilling rod tripping process of well drilling construction, when a well kick occurs, in order to prevent drilling fluid from being sprayed out from a water hole of a drilling tool to cause accidents such as blowout or out-of-control blowout, a check valve of the drilling tool with an open state needs to be installed on a drill floor in a robbing mode, so that a jacking device must be installed on the check valve of the drilling tool, and the existing jacking device for the check valve of the drilling tool mainly comprises the following three types:
first, the discharge opening of the jacking device is upward, the length of the middle ejector rod is fixed, and the ejector rod just jacks the valve core of the check valve of the drilling tool completely after the jacking device is connected with the joint of the check valve of the drilling tool through screw threads. If the connection is finished, the middle ejector rod is not completely pushed open or the ejector rod is too long, the middle ejector rod needs to be lengthened in an electric welding mode, or a part needs to be cut to meet the requirements of the site. After the drilling tool check valve is installed in the well kick, the valve core of the drilling tool check valve can be sealed only by detaching the jacking device, and the purpose of controlling the water hole of the drilling tool is achieved. Its advantages are simple structure; the drainage port is upward, so that the device is convenient to install in a rush mode during the well kick. The middle ejector rod is not adjustable, so that the middle ejector rod can not be suitable for check valves of drilling tools of different manufacturers or different structures; after the well kick is rush-mounted, the valve core of the check valve of the drilling tool needs to be detached to seal the water hole of the drilling tool, so that the time for controlling the water hole of the drilling tool is delayed; during well kick, the jacking device always bears the upward jacking force of fluid sprayed out of the check valve core of the drilling tool in the tripping process, and the resistance and the difficulty in dismounting the jacking device are increased.
And secondly, the discharge port of the jacking device is upward, the middle ejector rod is provided with a screw thread, the length of the middle ejector rod can be adjusted by rotating the ejector rod, and after the jacking device is connected with the check valve joint screw thread of the drilling tool, the ejector rod can completely jack the valve core of the check valve of the drilling tool by adjusting the length. After the drilling tool check valve is installed in a well kick, the core of the check valve of the drilling tool is required to seal the water hole of the drilling tool, and the purpose can be achieved only after the jacking device is disassembled or the mandril is rotated by a hand tool to be loosened. The ejector rod is adjustable, and the device is suitable for check valves of drilling tools of different manufacturers; the drainage port is upward, so that the device is convenient to install in a rush mode during the well kick. The problem exists that after the drilling tool check valve is assembled in a rush mode, the valve core is required to seal the water hole of the drilling tool and the jacking device is detached or the mandril is rotated by a hand tool to be loosened, so that the water hole of the drilling tool is controlled in a delayed mode. When the ejecting device is detached or the ejector rod is rotated by a hand tool to loosen and buckle, the ejecting device or the ejector rod always bears the upward ejecting force of fluid sprayed upwards from the check valve core of the drilling tool, so that the detaching resistance and difficulty are increased.
And thirdly, the discharge port of the jacking device is arranged on the side surface, the middle ejector rod is provided with a limiting groove, the length of the ejector rod is fixed, the ejector rod is fixed and limited through a limiting screw rod on the side surface, and the ejector rod completely jacks the valve core of the check valve of the drilling tool after the jacking device is connected with the joint of the check valve of the drilling tool through screw threads. After the drilling tool check valve is installed in a well kick, the valve core of the drilling tool check valve is required to seal the water hole of the drilling tool, and only the side limiting screw rod is required to be loosened, the ejector rod is required to be sprung, and the valve core of the drilling tool check valve rapidly seals the water hole of the drilling tool. The drilling tool check valve has the advantages that after the drilling tool check valve is installed, if the valve core of the drilling tool check valve is required to be sealed and the water hole of the drilling tool is controlled, only the limiting screw is required to be loosened, and the drilling tool check valve is quick and convenient to use. The problem exists that the discharge port is arranged on the side surface, the fluid sprayed out when the personnel install the device is swept for a circle, the safety risk of the personnel during the installation is increased, and the device cannot be used on the site in China; the middle ejector rod is not adjustable, and the check valve of the drilling tool cannot be suitable for different manufacturers.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the problem that several kinds of drilling tool check valve ejecting devices used in the scene exist, provide a drilling tool check valve ejecting device, have ejecting length adjustable, realize the sealed characteristics of drilling tool check valve case rapidly during the use.
In order to solve the technical problem, the utility model discloses a technical scheme is: a back-opening device for check valve of drilling tool is composed of a back-opening unit with a lower cylindrical body with male and female screw threads matched with the screw threads of check valve connector, a push rod passing through the center of back-opening unit, an upward discharge channel on the top of back-opening unit, the center of the top surface of the jacking device body is provided with a boss which is communicated with the lower barrel and is provided with two axial stages of through holes, the upper part of the boss is provided with a large through hole, the lower part of the boss is provided with a small through hole, the upper end of the ejector rod is provided with a screw thread, the lower end of the ejector rod is provided with a limiting block, the screw thread at the upper end of the ejector rod is sleeved with a nut sliding sleeve, the nut sliding sleeve is connected with the ejector rod screw thread, the nut sliding sleeve is matched with, the outer side wall of the nut sliding sleeve is provided with a limiting hole, the side wall of the opposite boss is provided with a through screw hole, the nut sliding sleeve is limited in the upper through hole by screwing the limiting screw into the limiting hole which penetrates through the screw hole and is propped against the outer side wall of the nut sliding sleeve.
Four handles which are uniformly distributed are arranged on the circumference of the upper part of the jacking device body, so that the carrying of personnel is facilitated.
The lower through hole of the boss is slightly larger than the outer diameter of the ejector rod.
The upward flow discharge channels are two symmetrical channels.
The utility model has the advantages that: the ejector rod is adjustable, so that the check valve can be suitable for check valves of drilling tools produced by different structures or manufacturers; when in use, the check valve of the drilling tool can be rapidly sealed, the time for controlling the water hole of the drilling tool is reduced, and the jacking device is safer and more convenient to disassemble.
Drawings
Fig. 1 is a schematic structural diagram of the back valve opening device of the drilling tool of the present invention.
Fig. 2 is a top view of fig. 1.
Detailed Description
The invention will be described in further detail with reference to the following drawings and embodiments:
as shown in figures 1 and 2, the back-opening device of the drilling tool comprises a back-opening device body and a mandril penetrating through the center of the back-opening device body, wherein a lower barrel of the back-opening device body 1 is provided with a male thread matched with a female thread of a check valve joint of the drilling tool, the top surface of the back-opening device body 1 is provided with an upward flow discharge channel 6 communicated with the lower barrel, the center of the top surface of the back-opening device body 1 is provided with a boss 7 communicated with the lower barrel and provided with axial two-stage through holes, the upper through hole of the boss 7 is large, the lower through hole is small, the upper end of the mandril 3 is provided with a screw thread, the lower end of the mandril is provided with a limiting block 8, the screw thread at the upper end of the mandril 3 is sleeved with a nut sliding sleeve 4, the nut sliding sleeve 4 is connected with the, the lateral wall of the opposite boss 7 is provided with a through screw hole, and the nut sliding sleeve 4 is limited in the upper through hole by screwing the through screw hole into a limiting hole on the outer lateral wall of the nut sliding sleeve through a limiting screw rod 5.
Four handles 2 which are uniformly distributed are arranged on the circumference of the upper part of the jacking device body 1, so that the carrying of personnel is facilitated.
The lower through hole of the boss 7 is slightly larger than the outer diameter of the ejector rod 3.
The upward flow discharge channels 6 are symmetrical two.
Specifically speaking, install four evenly distributed's handle 2 on the device body 1 of pushing up, make things convenient for personnel's transport, there are two ascending discharge channel 6 on the device body 1 of pushing up, there is the screw thread ejector pin 3 upper end, the lower extreme has spacing piece 8, ejector pin 3 upwards passes the device body 1 of pushing up from the device body 1 screw thread end of pushing up, nut sliding sleeve 4 has the internal thread, link to each other nut sliding sleeve 4 and 3 screw threads of ejector pin, put nut sliding sleeve 4 that has spacing hole in the upper end hole inslot of the device body 1 of pushing up to it is spacing through stop screw 5. The thread of the ejection device body 1 is the same as the female thread of the check valve joint of the drilling tool, after the ejection device is connected with the check valve joint of the drilling tool, the ejector rod 3 is rotated clockwise to enable the ejector rod 3 to completely eject the valve core of the check valve of the drilling tool, and at the moment, the check valve of the drilling tool is in a smooth state required by daily work.
When the drilling tool check valve needs to be installed on a drilling platform in a rush mode, the drilling tool check valve can be placed on a drill rod of a wellhead through the lifting handle 2, the valve core of the drilling tool check valve is completely jacked open through the jacking device ejector rod 3, the water hole of the drilling tool is smooth, the gushed fluid gushes out through the drainage channel 6 of the drilling tool check valve jacking device, the drilling tool check valve bears small jacking force, and the drilling tool check valve is conveniently connected with the drill rod and is buckled on the drilling tool. After the check valve of the drilling tool is fastened, the limiting screw rod 5 with the screw thread at the upper end of the jacking device of the check valve of the drilling tool can be rotated and loosened to enable the limiting screw rod 5 to leave a limiting hole on the nut sliding sleeve 4, and the valve core always bears the upward thrust of fluid in a well, so that the ejector rod 3 limited by the limiting screw rod 5 is pushed to bounce with the nut sliding sleeve 4 under the action of the jacking force on the valve core, the valve core of the check valve of the drilling tool is rapidly sealed, the water hole of the drilling tool is completely sealed at the moment, no fluid flows out, and the jacking device of the. Because the lower end of the ejector rod 3 is provided with the limiting block, the ejector rod 3 can be prevented from bouncing off the ejecting device when bouncing up.
The back-up device of the check valve of the drilling tool can be applied to the drilling operation field, and the ejector rod of the back-up device can be adjusted and is suitable for check valves of drilling tools of different manufacturers and structures. After the well kick happens, the installation of the check valve of the drilling tool is facilitated at the well mouth, the sealing of the valve core of the check valve of the drilling tool can be rapidly realized after the installation, and the disassembly of the jacking device is facilitated. The device has simple structure, convenient use, safety and high efficiency.
The utility model discloses a drilling tool check valve backs down device, but its wide application in oil drilling operation conveniently realizes the adjustable back down of drilling tool check valve case. In the process of tripping the drill rod, the drilling tool check valve is convenient to rob and seal the valve core of the drilling tool check valve.
In summary, the present invention is not limited to the above embodiments, and other embodiments can be easily proposed by those skilled in the art within the technical teaching of the present invention, but all such embodiments are included in the scope of the present invention.
Claims (4)
1. A back-opening device of a check valve of a drilling tool comprises a back-opening device body and a mandril penetrating through the center of the back-opening device body, and is characterized in that a lower barrel of the back-opening device body (1) is provided with a male thread matched with a female thread of a joint of the check valve of the drilling tool, the top surface of the back-opening device body (1) is provided with an upward discharge channel (6) communicated with the lower barrel, the center of the top surface of the back-opening device body (1) is provided with a boss (7) communicated with the lower barrel and provided with two axial through holes, the upper through hole of the boss (7) is large, the lower through hole is small, the upper end of the mandril (3) is provided with a screw thread, the lower end of the mandril is provided with a limiting block (8), a screw thread at the upper end of the mandril (3) is sleeved with a nut sliding sleeve (4), the nut sliding sleeve (4) is connected with the screw thread of, the outer side wall of the nut sliding sleeve (4) is provided with a limiting hole, the side wall of the opposite boss (7) is provided with a through screw hole, and the nut sliding sleeve (4) is limited in the upper through hole by screwing the through screw hole into the limiting hole on the outer side wall of the nut sliding sleeve through a limiting screw rod (5).
2. The drilling tool check valve ejecting device according to claim 1, characterized in that four handles (2) are evenly distributed on the circumference of the upper part of the ejecting device body (1) for facilitating the carrying of personnel.
3. The drilling tool check valve ejection device according to claim 1, wherein the lower through hole of the boss (7) is slightly larger than the outer diameter of the ejector (3).
4. The drilling tool check valve unseating device according to claim 1, characterized in that the upward relief channel (6) is symmetrical two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921693040.3U CN210685933U (en) | 2019-10-11 | 2019-10-11 | Drilling tool check valve ejecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921693040.3U CN210685933U (en) | 2019-10-11 | 2019-10-11 | Drilling tool check valve ejecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210685933U true CN210685933U (en) | 2020-06-05 |
Family
ID=70897273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921693040.3U Expired - Fee Related CN210685933U (en) | 2019-10-11 | 2019-10-11 | Drilling tool check valve ejecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210685933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360376A (en) * | 2020-12-10 | 2021-02-12 | 西南石油大学 | Blowout prevention check valve in spiral drill column |
-
2019
- 2019-10-11 CN CN201921693040.3U patent/CN210685933U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360376A (en) * | 2020-12-10 | 2021-02-12 | 西南石油大学 | Blowout prevention check valve in spiral drill column |
| CN112360376B (en) * | 2020-12-10 | 2022-02-15 | 西南石油大学 | Blowout prevention check valve in spiral drill column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210416 Address after: 300457 Tianjin Binhai New Area Development Zone No. second, No. 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 300457 Tianjin Economic Development Zone, No. 83, No. second main street, Tianjin, China Petroleum Building, Bohai Drilling Engineering Co., Ltd. Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |