CN202360060U - Drill rod decompression valve - Google Patents
Drill rod decompression valve Download PDFInfo
- Publication number
- CN202360060U CN202360060U CN2011203917781U CN201120391778U CN202360060U CN 202360060 U CN202360060 U CN 202360060U CN 2011203917781 U CN2011203917781 U CN 2011203917781U CN 201120391778 U CN201120391778 U CN 201120391778U CN 202360060 U CN202360060 U CN 202360060U
- Authority
- CN
- China
- Prior art keywords
- valve body
- drilling
- drill rod
- pin
- valve
- 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
Links
Abstract
The utility model relates to a drill rod decompression valve, which belongs to the technical field of valve devices for petroleum engineering drilling and for preventing jamming of a drill rod plug in drilling liner cementing. The drill rod decompression valve comprises a valve body, a sliding bush and a pin. Two ends of the valve body which is tubular are provided with connecting threads. An inner shoulder is disposed on the lower portion of the inner wall of the valve body. The middle outer wall of the valve body is respectively provided with a pin hole and an overflow hole. An outer wall of the sliding bush which is tubular is provided with a clamping groove. The pin penetrates through the pin hole of the valve body and is clamped in the clamping groove on the outer wall of the sliding bush so as to clamp the sliding bush in a center hole of the valve body. The drill rod decompression valve is closed in pumping circulation or drilling and is close to the outside, and construction operations, such as pigging, redressing, drilling, can be performed normally. After the test of drill rod plug diameter is complete, the decompression valve can be opened to circulate inside and outside of a drilling rig, so that the construction operations, such as pigging, redressing, drilling, plug diameter testing, can be finished at a trip.
Description
Technical field:
The utility model relates to a kind of drilling rod relief valve, belongs to the petroleum works drilling well with the valving technical field that prevents bit freezing bar plug in the drilling liner cementing.
Background technology:
In drilling liner cementing construction, need be pressed into cementing plug displacement cement paste and scraping drilling rod inwall, because the drilling rod inwall is dirtier, the cementing plug stuck accident that in the drilling rod hydrophthalmia, is hampered often takes place, cause the well cementation failure.Unobstructed for guaranteeing drilling rod inwall cleaning, need be lowered to the drilling rod plug in advance the drilling rod hydrophthalmia is carried out latus rectum, scrapes and wash experiment.In the prior art; The scheme of generally using is to connect a tubular configured joint in the drilling tool bottom, and this joint outer tube wall top has through hole, and the bottom is a cross bearer; When joint during down to sidetracked hole the window's position; Be pressed into the drilling rod plug, make the drilling rod plug arrive joint location, realize the plug latus rectum, scrape the purpose of washing for slurry.Because joint outer tube wall top has through hole, can't satisfy safe construction requirements such as bore hole is crept into, reaming, need trip-out to take plug out of and lay down joint, connect again again and drill through well under the drill bit, therefore, need make a trip twice, labour intensity is big, and the production cycle is long.
Summary of the invention:
The purpose of the utility model is for the drilling rod plug that is lowered to that overcomes that above-mentioned prior art exists carries out latus rectum, scrapes when washing experiment the drilling rod hydrophthalmia, need make a trip twice, and labour intensity is big, and long defective of production cycle provides a kind of drilling rod relief valve.
The utility model is made up of valve body, sliding sleeve, pin, and valve body is a tubular body, and two ends are provided with connecting thread, and its inner tubal wall bottom is provided with interior shoulder, has pin hole and flowing hole on the outer tube wall of middle part; Sliding sleeve is a tubular body, and its outer tube wall is provided with draw-in groove, and pin passes the pin hole of valve body and is stuck in the draw-in groove on the sliding sleeve outer tube wall, sliding sleeve is connected in the centre bore of valve body.
The center line level of pin hole and flowing hole is interlaced.
Pin hole is three holes that are distributed on the valve body outer tube wall.
Flowing hole is three holes that are distributed on the valve body outer tube wall.
Between valve body and the sliding sleeve O-ring seal is installed.
The utility model is in closed condition in turn on pump circulation or when creeping into, inside and outsidely be not connected, construction operation such as can normally carry out drifting, reaming, creep into.After the experiment of accomplishing drilling rod plug latus rectum; Can relief valve be opened; Make that drilling tool is inside and outside sets up circulation, thus bore for one time accomplish drifting, reaming, creep into, construction operation such as plug latus rectum, practice thrift the production cycle; Reduce labor intensity, and can reuse, simple in structure, with low cost, easy to maintenance.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
The specific embodiment:
As shown in Figure 1, the utility model is made up of valve body 1, sliding sleeve 2, pin 3, and valve body 1 is a tubular body, and two ends are provided with connecting thread, and its inner tubal wall bottom is provided with interior shoulder 1c, has pin hole 1a and flowing hole 1b on the outer tube wall of middle part; Sliding sleeve 2 is a tubular body, and its outer tube wall is provided with draw-in groove, and pin 3 passes the pin hole 1a of valve body 1 and is stuck in the draw-in groove on sliding sleeve 2 outer tube walls, sliding sleeve 2 is connected in the centre bore of valve body 1.
The center line level of described pin hole 1a and flowing hole 1b is interlaced.
Described pin hole 1a is three holes that are distributed on valve body 1 outer tube wall.
Described flowing hole 1b is three holes that are distributed on valve body 1 outer tube wall.
Between described valve body 1 and the sliding sleeve 2 O-ring seal 4a and 4b are installed.
The utility model is connected on the drilling tool of going into the well, because valve body 1, sliding sleeve 2 forms drilling rod relief valve inner and outer sealing with sealing ring 4a and 4b, construction operation such as can carry out bore hole drifting, reaming, creep into.When needs carry out the plug latus rectum, drill bit is risen to sleeve pipe, be pressed into drilling rod plug 5 the drilling tool hydrophthalmia, replace slurry; Drilling rod plug 5 comes downwards to sliding sleeve 2 upper surfaces and stops up drilling tool center hydrophthalmia, builds the pressure through slush pump, cuts off pin 3; Make on the descending lower shoulder 1c that is sitting in valve body 1 inner tubal wall of drilling rod plug 5 and sliding sleeve 2, flowing hole 1b opens, and makes 1 inside and outside connection of valve body set up circulation; Accomplish the experiment of drilling rod plug 5 latus rectums; Thereby bore to accomplish bore hole drifting, reaming for one time, creep into, construction operation such as plug latus rectum, practice thrift the production cycle, reduce labor intensity.
Claims (5)
1. drilling rod relief valve; Form by valve body (1), sliding sleeve (2), pin (3); Valve body (1) is a tubular body; Two ends are provided with connecting thread, it is characterized in that: valve body (1) inner tubal wall bottom is provided with interior shoulder (1c), has pin hole (1a) and flowing hole (1b) on the outer tube wall of middle part; Sliding sleeve (2) is a tubular body, and its outer tube wall is provided with draw-in groove, and pin (3) passes the pin hole (1a) of valve body (1) and is stuck in the draw-in groove on sliding sleeve (2) outer tube wall, and sliding sleeve (2) is connected in the centre bore of valve body (1).
2. drilling rod relief valve according to claim 1 is characterized in that: the center line level of pin hole (1a) and flowing hole (1b) is interlaced.
3. drilling rod relief valve according to claim 1 and 2 is characterized in that: pin hole (1a) is three holes that are distributed on valve body (1) outer tube wall.
4. drilling rod relief valve according to claim 1 and 2 is characterized in that: flowing hole (1b) is three holes that are distributed on valve body (1) outer tube wall.
5. drilling rod relief valve according to claim 1 and 2 is characterized in that: O-ring seal (4a, 4b) is installed between valve body (1) and the sliding sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203917781U CN202360060U (en) | 2011-10-15 | 2011-10-15 | Drill rod decompression valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203917781U CN202360060U (en) | 2011-10-15 | 2011-10-15 | Drill rod decompression valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360060U true CN202360060U (en) | 2012-08-01 |
Family
ID=46571252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203917781U Expired - Fee Related CN202360060U (en) | 2011-10-15 | 2011-10-15 | Drill rod decompression valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360060U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507847A (en) * | 2014-09-25 | 2016-04-20 | 中国石油化工股份有限公司 | Apparatus and method for drill pipe plug field testing |
-
2011
- 2011-10-15 CN CN2011203917781U patent/CN202360060U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507847A (en) * | 2014-09-25 | 2016-04-20 | 中国石油化工股份有限公司 | Apparatus and method for drill pipe plug field testing |
| CN105507847B (en) * | 2014-09-25 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of apparatus and method for drilling rod rubber plug field test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20151015 |
|
| EXPY | Termination of patent right or utility model |