CN203531771U - Continuous air drilling circulation nipple - Google Patents
Continuous air drilling circulation nipple Download PDFInfo
- Publication number
- CN203531771U CN203531771U CN201320625787.1U CN201320625787U CN203531771U CN 203531771 U CN203531771 U CN 203531771U CN 201320625787 U CN201320625787 U CN 201320625787U CN 203531771 U CN203531771 U CN 203531771U
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- CN
- China
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- drilling
- nipple body
- gas
- valve
- pipe nipple
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- Expired - Fee Related
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Abstract
The utility model relates to a continuous air drilling circulation nipple, and belongs to the technical field of oil and gas field gas drilling mechanical parts. The continuous air drilling circulation nipple comprises a nipple body, a ball valve, an upper valve seat, a lower valve seat and a bypass valve. One end of the nipple body is provided with a connector, the other end of the nipple body is provided with a connection opening, the ball valve is arranged in the nipple body at the connection opening end through a check ring and a lining ring, a bypass hole is formed in the nipple body located at the ball valve end, a valve plate is arranged in the bypass hole through a bypass valve seat and a spring, and a plug is arranged in the bypass hole in the lower portion of the valve plate in a threaded mode. Through the ball valve and the bypass hole, two circulation channels which can be switched with each other are formed, well drilling gas in the gas drilling process can continuously circulate, drilling cost and potential safety hazards of drilling operation are lowered, and the purposes of reducing downhole complex accidents, protecting oil and gas layers, and increasing oil and gas yield are achieved.
Description
Technical field
The utility model relates to a kind of uninterrupted air drilling circulating sub, belongs to oil gas field gas drilling mechanical part field.
Background technology
Gas drilling is a kind of under balance pressure drilling mode that development in recent years is got up, with gas compressor, in well, inject Compressed Gas, rely on the energy of annular space gases at high pressure, drilling cuttings is taken back to ground from shaft bottom, and on ground, carry out the separation of solid and gas body, by a kind of drilling mode of isolated gas fuel burning release, dedusting, noise reduction.Gas drilling and traditional mud drilling have the rate of penetration of raising, reduce or avoid leakage, extend bit life, reduce drilling well integrated cost, and reduce down-hole complex accident, protection oil-gas Layer, increase the advantage of oil and gas production.
But in actual oil gas field During Air Drilling, due to change drilling tool or install additional, the interruption of drilling well gas circulation channel during removal drilling rod, the cycle interruption that causes drilling well gas, make the landwaste that relies on Compressed Gas to suspend lose support, and pile up at drill bit and drill collar place, part landwaste can fall after rise to shaft bottom simultaneously, cause the repetition of drill bit broken, and then reduction drilling efficiency, increase considerably drilling cost, when serious, even there is shaft bottom hydrops rock stratum is soaked it is expanded, cause the downhole safety accidents such as cave-in and bit freezing.
Summary of the invention
The purpose of this utility model is: provide a kind of simple in structure, easy to use, to guarantee the uninterrupted circulation of drilling well gas in During Air Drilling, and then reduce the potential safety hazard of drilling cost and drillng operation, improve the uninterrupted air drilling circulating sub of drilling efficiency.
The technical solution of the utility model is:
A kind of uninterrupted air drilling circulating sub, comprise pipe nipple body, ball valve, upper valve base, lower valve base and bypass valve, it is characterized in that: pipe nipple body is a tubular body, one end of pipe nipple body is provided with the connector of taper, the through hole port of the other end of pipe nipple body is provided with connector, in the pipe nipple body of connector one end, by back-up ring and lining ring, ball valve is installed, on the pipe nipple body of ball valve one end, be provided with by-pass prot, in by-pass prot, by bypass valve seat and spring fitting, have valve plate, the by-pass prot internal thread of valve plate below is provided with plug.
Described ball valve consists of upper valve base, lower valve base, spool and rotating handle, between upper valve base and lower valve base, spool is installed, and the pipe nipple body of spool one side is provided with rotating handle; Rotating handle is fixedly connected with spool.
The utility model has the advantage of:
This uninterrupted air drilling circulating sub, by ball valve and by-pass prot, can form two circulation passages of mutual switching; Thereby can guarantee the uninterrupted circulation of drilling well gas in During Air Drilling, and then reduce the potential safety hazard of drilling cost and drillng operation, reach and reduce down-hole complex accident, protection oil-gas Layer, increase the object of oil and gas production.This uninterrupted air drilling circulating sub has feature simple in structure, easy to use, and existing rig is had to good compliance.
Accompanying drawing explanation:
Accompanying drawing 1 is structural representation of the present utility model.
In figure: 1, pipe nipple body; 2, upper valve base; 3, lower valve base; 4, by-pass prot; 5, connector; 6, connector; 7, back-up ring; 8, lining ring; 9, spool; 10, rotating handle; 11, bypass valve seat; 12, spring; 13, valve plate; 14, plug.
The specific embodiment
This uninterrupted air drilling circulating sub comprises pipe nipple body 1, ball valve, upper valve base 2, lower valve base 3 and by-pass prot 4.Pipe nipple body 1 is a tubular body, and one end of pipe nipple body 1 is provided with the connector 5 of taper, and the through hole port of the other end of pipe nipple body 1 is provided with connector 6.
In the pipe nipple body 1 of connector 6 one end, by back-up ring 7 and lining ring 8, ball valve is installed.Ball valve consists of upper valve base 2, lower valve base 3, spool 9 and rotating handle 10, between upper valve base 2 and lower valve base 3, spool 9 is installed, and the pipe nipple body 1 of spool 9 one sides is provided with rotating handle 10; Rotating handle 10 is fixedly connected with spool 9.
On the pipe nipple body 1 of ball valve one end, be provided with by-pass prot 4, in by-pass prot 4, by bypass valve seat 11 and spring 12, valve plate 13 be installed, by-pass prot 4 internal threads of valve plate 13 belows are provided with plug 14.
When this uninterrupted air drilling circulating sub is installed, by connector 5 and connector 6, be arranged between two drilling rods; Under normal drilling condition, this circulating sub is with drilling rod G.I.H; When complete the brill of a drilling rod dark after, this circulating sub is installed on drilling rod top again, so circulation, is arranged on this circulating sub on drilling rod successively.When needs promote drilling rod, operating process is contrary during with stacks, can take off one by one this circulating sub; The quantity that this circulating sub needs needs the continuous circulation well section degree of depth to determine according to determining.
In the course of work, in actual oil gas field During Air Drilling, need to change drilling tool or install additional, during removal drilling rod, first rotation removes plug 14, and communicating pipe is threaded with by-pass prot 4.Rotate rotating handle 10 simultaneously, thereby making it with movable valve plug 9, rotate 90 ° closes the through hole in pipe nipple body 1, pressure in now communicating pipe backs down valve plate 13, so that drilling well gas flows into from by-pass prot, realizes and changes the continuous circulation that shaft bottom drilling well gas is held in the continuation of insurance of drilling tool process relaying connecing.
When change drilling tool or install additional, after removal drilling rod completes, rotate rotating handle 10, make spool 9 rotate 90 °, so that the through hole in pipe nipple body 1 is opened, drilling well gas is flowed into from the through hole in pipe nipple body 1, reduce the influx of by-pass prot 4 place's pipeline drilling well gases simultaneously, now the drilling well gas pressure in pipe nipple body 1 through hole is greater than the drilling well gas pressure at by-pass prot 4 places, under the effect of the drilling well gas pressure in through hole, the active force of spring 12 is eliminated, 13 times seats of valve plate, fit tightly and are connected with closing of pipe nipple body 1, thereby by-pass prot 4 is closed; Then remove communicating pipe, plug 14 is screwed in by-pass prot 4, drilling well gas recovers normal circulation, thereby reaches the object of drilling well gas continuous circulation.
This uninterrupted air drilling circulating sub can be realized the uninterrupted circulation of downhole drill gas in whole drilling process, thereby can maintain, connects, unloads the constant of bottom pressure in drilling rod operating process, reduces cave-in and bit freezing risk, improves drilling efficiency.
Claims (2)
1. a uninterrupted air drilling circulating sub, comprise pipe nipple body (1), ball valve, upper valve base (2), lower valve base (3) and bypass valve (4), it is characterized in that: pipe nipple body (1) is a tubular body, one end of pipe nipple body (1) is provided with the connector (5) of taper, the through hole port of the other end of pipe nipple body (1) is provided with connector (6), in the pipe nipple body (1) of connector (6) one end, by back-up ring (7) and lining ring (8), ball valve is installed, on the pipe nipple body (1) of ball valve one end, be provided with by-pass prot (4), in by-pass prot (4), by bypass valve seat (11) and spring (12), valve plate (13) is installed, by-pass prot (4) internal thread of valve plate (13) below is provided with plug (14).
2. a kind of uninterrupted air drilling circulating sub according to claim 1, it is characterized in that: described ball valve consists of upper valve base (2), lower valve base (3), spool (9) and rotating handle (10), between upper valve base (2) and lower valve base (3), spool (9) is installed, on the pipe nipple body (1) of spool (9) one sides, is provided with rotating handle (10); Rotating handle (10) is fixedly connected with spool (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320625787.1U CN203531771U (en) | 2013-10-11 | 2013-10-11 | Continuous air drilling circulation nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320625787.1U CN203531771U (en) | 2013-10-11 | 2013-10-11 | Continuous air drilling circulation nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203531771U true CN203531771U (en) | 2014-04-09 |
Family
ID=50417993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320625787.1U Expired - Fee Related CN203531771U (en) | 2013-10-11 | 2013-10-11 | Continuous air drilling circulation nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203531771U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485730A (en) * | 2013-10-11 | 2014-01-01 | 长江大学 | Uninterrupted air drilling circulating nipple |
| CN104329039A (en) * | 2014-09-03 | 2015-02-04 | 中国石油天然气集团公司 | Continuous circulating valve |
-
2013
- 2013-10-11 CN CN201320625787.1U patent/CN203531771U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485730A (en) * | 2013-10-11 | 2014-01-01 | 长江大学 | Uninterrupted air drilling circulating nipple |
| CN104329039A (en) * | 2014-09-03 | 2015-02-04 | 中国石油天然气集团公司 | Continuous circulating valve |
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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: 20140409 Termination date: 20151011 |
|
| EXPY | Termination of patent right or utility model |