CN201306150Y - Screw drill by-pass valve - Google Patents
Screw drill by-pass valve Download PDFInfo
- Publication number
- CN201306150Y CN201306150Y CNU2008201749845U CN200820174984U CN201306150Y CN 201306150 Y CN201306150 Y CN 201306150Y CN U2008201749845 U CNU2008201749845 U CN U2008201749845U CN 200820174984 U CN200820174984 U CN 200820174984U CN 201306150 Y CN201306150 Y CN 201306150Y
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- CN
- China
- Prior art keywords
- valve
- pass valve
- spring
- pass
- screw drill
- 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
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Abstract
The utility model relates to an oil-field down-hole drilling device, in particular to a screw drill by-pass valve. The technical proposal is as follows: the screw drill by-pass valve mainly consists of a valve body, a valve core, a spring, a valve port and a snap spring, wherein a cylindrical channel with steps is arranged in the inner cavity of the valve body, the cylindrical channel is communicated with the valve port, and the valve core engages with the cylindrical channel with steps through the spring; and a valve core hole is formed at the lower end of the valve core, and when the valve core hole is communicated with the valve port on the valve body, the by-pass valve is in the opened position. The screw drill by-pass valve has the advantage that the spring of the novel by-pass valve with structural modifications is in the half-closed state, thereby preventing the invalidation of the screw drill by-pass valve caused by the impurities such as rock fragments and screw thread chips in the slurry, increasing the reliability of the by-pass valve as well as the reliability of down-hole operation of the screw drill, avoiding the operation of repeatedly starting and descending the drill, saving the drilling time, and increasing the economic benefit.
Description
One, technical field:
The utility model relates to a kind of oil field down-hole equipment, the by-pass valve of screwdrill during particularly a kind of oil drilling is produced.
Two, background technology:
The use of helicoid hydraulic motor is very general in oil drilling production at present, and by-pass valve of screwdrill is one of parts of forming helicoid hydraulic motor, and by-pass valve of screwdrill is rising, is being in out the position when boring down, and the interior mud of drill string is connected with annular space.Because the mud purification problem, often mud contains impurity such as landwaste, screw thread film, and these impurity are easy to be deposited on the spring place of by-pass valve of screwdrill, causes by-pass valve of screwdrill to lose efficacy, and whole helicoid hydraulic motor lost efficacy.Drilling crew will rise, tripping operation, check, change helicoid hydraulic motor, lose drilling time, cause enormous economic loss to drilling team.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of by-pass valve of screwdrill that improves operating efficiency is provided.
Its technical scheme is: mainly be made up of valve body, spool, spring, valve port and jump ring, described body cavity is provided with cylindrical channel with the level, cylindrical channel is connected with valve port, spool matches with cylindrical channel with the level by spring, the lower end of spool is provided with spool bore, spool bore is when valve port on the valve body is communicated with, and bypass valve is in out the position.
The beneficial effects of the utility model are: the spring of the novel bypass valve after the improvement is in semi-closed state, mud contains impurity such as landwaste, screw thread film and can not cause by-pass valve of screwdrill to lose efficacy, the reliability of bypass valve improves, the reliability that helicoid hydraulic motor is gone into the well has also improved, avoided repeatedly rising, when boring down, save drilling time, improved economic benefit.
Four, description of drawings:
Structural representation when accompanying drawing 1 is of the present utility model be in out;
Accompanying drawing 2 is structural representations when being in off-position of the present utility model.
Five, the specific embodiment:
In conjunction with the accompanying drawings 1 and 2, the utility model will be further described:
Its technical scheme is: mainly be made up of valve body 1, spool 2, spring 3, valve port 4 and jump ring 8, described valve body 1 inner chamber is provided with cylindrical channel with the level, cylindrical channel is connected with valve port 4, described spool 2 matches with cylindrical channel with the level by spring 3, the lower end of spool 2 is provided with spool bore 5, spool bore 5 is when valve port 4 on the valve body is communicated with, and bypass valve is in out the position, with reference to accompanying drawing 1.
Install constantly and earlier spring 3 is put in the valve body 1, spool 2 is installed again, at last jump ring 8 is installed in the jump ring groove, two ends are respectively equipped with internal and external threads 6 and 7 up and down.
During work, helicoid hydraulic motor is when rising, descending brill or pump pressure low, and pump pressure is not enough to overcome the elastic force and the stiction of spring, spool 2 is failure to actuate, and the spool bore 5 on the spool is communicated with valve port 4 on the valve body, and bypass valve is in out the position, the interior mud of drill string is connected with annular space, and helicoid hydraulic motor is not worked; When pump pressure improves, the power of pump function on spool is greater than the elastic force and the stiction of spring, the spool action, move downward, hole on the spool and the valve port on the valve body are in closed state, and bypass valve is in off-position, and the interior mud of drill string is not communicated with mutually with annular space, mud enters screw drilling tool motor, drives helicoid hydraulic motor work.
Claims (1)
1, a kind of by-pass valve of screwdrill, it is characterized in that: mainly form by valve body (1), spool (2), spring (3), valve port (4) and jump ring (8), described valve body (1) inner chamber is provided with cylindrical channel with the level, cylindrical channel is connected with valve port (4), described spool (2) matches with cylindrical channel with the level by spring (3), the lower end of spool (2) is provided with spool bore (5), and the valve port (4) on spool bore (5) and the valve body is when being communicated with, and bypass valve is in out the position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201749845U CN201306150Y (en) | 2008-11-10 | 2008-11-10 | Screw drill by-pass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201749845U CN201306150Y (en) | 2008-11-10 | 2008-11-10 | Screw drill by-pass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306150Y true CN201306150Y (en) | 2009-09-09 |
Family
ID=41098617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201749845U Expired - Fee Related CN201306150Y (en) | 2008-11-10 | 2008-11-10 | Screw drill by-pass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201306150Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110228A (en) * | 2014-07-23 | 2014-10-22 | 成都高普石油工程技术有限公司 | Sand-proof bypass valve device for drill rod |
| CN104141466A (en) * | 2014-07-23 | 2014-11-12 | 成都高普石油工程技术有限公司 | Drill rod bypass valve device |
| CN104141466B (en) * | 2014-07-23 | 2017-01-04 | 林文士 | Drilling rod by-pass valve device |
| CN107923233A (en) * | 2015-06-19 | 2018-04-17 | 基尔格工具有限责任公司 | Circulating valve |
| CN110107254A (en) * | 2019-04-16 | 2019-08-09 | 宝鸡石油机械有限责任公司 | A kind of ball-throwing type repeatedly excites by-passing valve |
| CN110107237A (en) * | 2019-04-23 | 2019-08-09 | 成都众智诚成石油科技有限公司 | A kind of down-hole string by-passing valve and its application method |
-
2008
- 2008-11-10 CN CNU2008201749845U patent/CN201306150Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110228A (en) * | 2014-07-23 | 2014-10-22 | 成都高普石油工程技术有限公司 | Sand-proof bypass valve device for drill rod |
| CN104141466A (en) * | 2014-07-23 | 2014-11-12 | 成都高普石油工程技术有限公司 | Drill rod bypass valve device |
| CN104141466B (en) * | 2014-07-23 | 2017-01-04 | 林文士 | Drilling rod by-pass valve device |
| CN104110228B (en) * | 2014-07-23 | 2017-06-30 | 杨耿纯 | Drilling rod sand prevention by-pass valve device |
| CN107923233A (en) * | 2015-06-19 | 2018-04-17 | 基尔格工具有限责任公司 | Circulating valve |
| US10745996B2 (en) | 2015-06-19 | 2020-08-18 | Drlg Tools, Llc | Circulation valve |
| CN110107254A (en) * | 2019-04-16 | 2019-08-09 | 宝鸡石油机械有限责任公司 | A kind of ball-throwing type repeatedly excites by-passing valve |
| CN110107254B (en) * | 2019-04-16 | 2021-07-13 | 宝鸡石油机械有限责任公司 | Ball throwing type multi-excitation bypass valve |
| CN110107237A (en) * | 2019-04-23 | 2019-08-09 | 成都众智诚成石油科技有限公司 | A kind of down-hole string by-passing valve and its application method |
| CN110107237B (en) * | 2019-04-23 | 2021-09-17 | 成都众智诚成石油科技有限公司 | Bypass valve for downhole pipe column and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20101110 |