CN108999581A - A kind of continuous circulating valve - Google Patents
A kind of continuous circulating valve Download PDFInfo
- Publication number
- CN108999581A CN108999581A CN201811206804.1A CN201811206804A CN108999581A CN 108999581 A CN108999581 A CN 108999581A CN 201811206804 A CN201811206804 A CN 201811206804A CN 108999581 A CN108999581 A CN 108999581A
- Authority
- CN
- China
- Prior art keywords
- valve
- shell
- main port
- poppet shaft
- bypass
- 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.)
- Pending
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 abstract description 25
- 239000012530 fluid Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of continuous circulating valves, belong to downhole tool technical field.The continuous circulating valve is made of shell, main port valve core, bypass spool and poppet shaft, the both ends of shell have internal and external threads to connect drill string, poppet shaft is fixedly installed with by retaining ring in shell, main port valve core is equipped with by retaining ring and main port valve pedestal in the shell of poppet shaft one end, bypass valve opening is provided on the shell of poppet shaft side, bypass valve opening is interior to be fixed with bypass spool by by-pass valve cover and retaining ring.The continuous circulation valve arrangement is simple, the practicability of engineering site is good, it can be in drilling process, in the case where above not mentioning drill string, realize that the circulatory system continuously pumps drilling fluid to shaft bottom, solve the problems, such as it is existing due to making a trip, replacing the longer non-working time caused by discontinuous circulation valve, thus while effectively improving drilling efficiency, prevented also from due to the excessively high bring accident of bottom pressure.
Description
Technical field
The present invention relates to a kind of circulating valves, and in particular to a kind of continuous circulating valve belongs to downhole tool technical field.
Background technique
Oil drilling has a very important significance in downhole production operation safely.Blowout, leakage, bit freezing, well slough etc.
Accident be complexity is most strong in oil drilling exploitation, harm accident the most serious and drilling safety work it is main hidden
Suffer from, on the one hand, directly threaten the personal safety and property safety of field personnel and the periphery masses；On the other hand, also exist
Largely restrict constantly bringing forth new ideas for oil drilling technology.Site operation is for things such as blowout, leakage, bit freezing, well sloughs
Therefore consideration, fallen at this stage in drilling well, complete well, well workover, well-flushing, salvaging general in the construction operations such as well sundries and set packer
All over use circulating valve, however current circulating valve be largely limited to drilling well needed for cycle-index, and due to bore
It needs to remove the non-working time caused by drill string, the relevant tool of replacement into process, reduces the efficiency of drilling well, causing need not
The economic expenditure wanted.It is reduction at this stage using the waste of working time caused by ordinary cycle valve, improves the safety of drilling well,
Shorten drilling period, urgent need designs a kind of continuous circulating valve.
Summary of the invention
It is an object of the present invention in view of the above shortcomings of the prior art, provides and a kind of making up a joint, column and removing
During brill, it is ensured that drilling circulation medium is continuously injected, and down-hole pressure is being avoided to fluctuate and prevent down-hole accident
While generation, the safety of drilling well can be effectively improved, shorten drilling period, and then reduce the continuous circulating valve of drilling cost.
The technical scheme is that
A kind of continuous circulating valve, it is made of shell, main port valve core, bypass spool and poppet shaft, it is characterised in that: is led in shell
It crosses retaining ring A and is fixedly installed with poppet shaft, the shell of poppet shaft one end is interior to be equipped with main port valve by retaining ring B and main port valve pedestal
Core, is provided with bypass valve opening on the shell of poppet shaft side, is fixed with by-passing valve by by-pass valve cover and retaining ring C in bypass valve opening
Core.
The shell is tubular, is provided with stepped throughhole in shell.
The poppet shaft is goblet, is evenly equipped with multiple flow channel for liquids on the shell of poppet shaft periphery.
The bypass valve opening is connected to poppet shaft.
The main port valve core is in spindle, is provided with reset spring B, one end of main port valve core and retaining ring on main port valve core
B and the insertion of main port valve pedestal are slidably connected, and the other end of main port valve core extends in poppet shaft, and the master extended in poppet shaft is logical
Support base and retaining ring D are provided on spool.
Liquid through-hole is respectively arranged on the main port valve pedestal and support base.
The flange of umbrella shape is provided on the bypass spool, the lower surface of by-pass valve cover is provided with limiting groove, bypass
One end of spool is slidably connected by limiting groove and by-pass valve cover, and the other end and poppet shaft insertion sliding for bypassing spool connect
It connects.
Reset spring A is provided on bypass spool below the flange.
Feed liquor runner is provided on the by-pass valve cover, bypass spool is bonded by flange with feed liquor runner port sealing
Connection.
The beneficial effect of the present invention compared with prior art is:
The by-passing valve of the circulating valve and main port valve pass through free switching, it can be achieved that multiple cycle operation, strong operability, improve brill
The efficiency of well, and then reduce drilling cost；The continuous circulation valve arrangement is simple, and the practicability of engineering site is good, can be in drilling well
In the process, it in the case where above not mentioning drill string, realizes that the circulatory system continuously pumps drilling fluid to shaft bottom, solves existing due to rising
It is lower to bore, replace the problem of longer non-working time caused by discontinuous circulation valve, thus effectively improving drilling efficiency
Meanwhile prevented also from due to the excessively high bring accident of bottom pressure.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is housing cross-sectional structural schematic diagram of the invention；
Fig. 3 is the overlooking structure diagram of bypass valve opening of the invention.
In figure: 1, shell, 2, poppet shaft, 3, bypass valve opening, 4, flow channel for liquids, 5, bypass spool, 6, reset spring A, 7,
By-pass valve cover, 8, retaining ring C, 9, retaining ring D, 10, main port valve core, 11, retaining ring B, 12, main port valve pedestal, 13, reset spring B, 14,
Retaining ring A, 15, support base, 16, sealing ring A, 17, sealing ring B, 18, sealing ring C, 19, feed liquor runner, 20, liquid through-hole.
Specific embodiment
The continuous circulating valve is made of shell 1, main port valve core 10, bypass spool 5 and poppet shaft 2, one end setting of shell 1
There is internal screw thread, the other end of shell 1 is provided with external screw thread, and internal and external screw thread is used to connect when work with drill string, and shell 1 is tubular,
Stepped throughhole is provided in shell 1；Poppet shaft 2 is fixedly installed with by retaining ring A14 in shell 1, poppet shaft 2 is goblet,
Main port valve core 10 is equipped with by retaining ring B11 and main port valve pedestal 12 in the shell 1 of 2 one end of poppet shaft, main port valve core 10 is in spinning
Capitate, reset spring B13,10 one end of main port valve core and retaining ring B11 are provided on main port valve core 10 and main port valve pedestal 12 is inserted
Enter to be slidably connected, the other end of main port valve core 10 extends in poppet shaft 2, extends on the main port valve core 10 in poppet shaft 2 and sets
It is equipped with support base 15 and retaining ring D9；Support base 15 can play centralizing function to main port valve core 10；Main port valve pedestal 12 and support base
It is respectively arranged with liquid through-hole 20 on 15, is evenly equipped with multiple flow channel for liquids 4 on the shell 1 of 2 periphery of poppet shaft；2 side of poppet shaft
Shell 1 on be provided with bypass valve opening 3, bypass valve opening 3 be connected to poppet shaft 2；It bypasses in valve opening 3 through by-pass valve cover 7 and gear
Circle C8 is fixed with bypass spool 5.
The flange of umbrella shape is provided on bypass spool 5, the lower surface of by-pass valve cover 7 is provided with limiting groove, bypasses spool 5
Upper end be slidably connected with by-pass valve cover 7 by limiting groove, be provided with reset spring A6 on the bypass spool 5 below flange,
The lower end and the insertion of poppet shaft 2 for bypassing spool 5 are slidably connected；Feed liquor runner 19 is provided on by-pass valve cover 7, bypass spool 5 is logical
The arcwall face (upper surface) and 19 port sealing of feed liquor runner for crossing flange are fitted and connected.The setting purpose of the flange of umbrella shape, be
The resistance to fluid is reduced in work.Internal screw thread is provided on bypass valve opening 3.
When the circulating valve works normally, bypass valve opening 3 is in closed state, that is, bypass arcwall face of the spool 5 by flange
It is bonded with 19 port sealing of feed liquor runner, main port valve core 10 forms envelope to the port of poppet shaft 2 under reset spring B13 effect
Stifled, circulation fluid reaches shaft bottom through liquid through-hole 20, flow channel for liquids 4.
In the case where needing to remove drill string, the relevant tool of replacement etc. and needing to close main 12 runner of port valve pedestal, enable
The feed liquor runner 19 in valve opening 3 is bypassed, circulation fluid flows into the poppet shaft 2 of the continuous circulating valve from bypass valve opening 3, feed liquor runner 19
It is interior, during this, 5 umbrella shape flange surface of hydraulic compression by-passing valve core is recycled, so that bypass 5 downlink of spool, while compressing reset bullet
Spring A6 bypasses the sealed condition releasing of itself and 19 port of feed liquor runner of the lower enforcement of spool 5, and feed liquor runner 19 is opened, circulation fluid
It flows into poppet shaft 2.
After circulation fluid flows into poppet shaft 2, the main port valve core 10 of hydraulic compression is recycled, forces main port valve core 10 to move right, together
When compression reseting spring B13, main port valve core 10 moves right to be contacted with main port valve pedestal 12, to the liquid on main port valve pedestal 12
Through-hole 20, which is formed, to be blocked.
After main port valve core 10 forms closure to liquid through-hole 20, port sealed condition solution of the main port valve core 10 to poppet shaft 2
It removes；The circulation fluid flowed into poppet shaft 2 reaches shaft bottom through flow channel for liquids 4.
2 bottom end of poppet shaft of the continuous circulating valve and open end are equipped with sealing ring A16 and sealing ring B17, by-pass valve cover 7 with
Sealing ring C18 is equipped between shell 1, to guarantee the leakproofness of continuous circulating valve.
The bypass spool 5 of the circulating valve and main port valve core 10 pass through free switching, it can be achieved that multiple cycle operation, operability
By force, the efficiency of drilling well is improved, and then reduces drilling cost；The continuous circulation valve arrangement is simple, and the practicability of engineering site is good,
It in the case where above drill string can not mentioned in drilling process, realizes that the circulatory system continuously pumps drilling fluid to shaft bottom, solves existing
The problem of some is due to making a trip, replacing the longer non-working time caused by discontinuous circulation valve, thus effectively improving
While drilling efficiency, prevented also from due to the excessively high bring accident of bottom pressure.
Claims (9)
1. a kind of continuous circulating valve is made of, feature shell (1), main port valve core (10), bypass spool (5) and poppet shaft (2)
It is: is fixedly installed with poppet shaft (2) in shell (1) by retaining ring A(14), passes through gear in the shell (1) of poppet shaft (2) one end
Circle B(11) and main port valve pedestal (12) main port valve core (10) is installed, be provided with bypass on the shell (1) of poppet shaft (2) side
Valve opening (3), bypass valve opening (3) is interior to pass through by-pass valve cover (7) and retaining ring C(8) it is fixed with bypass spool (5).
2. a kind of continuous circulating valve according to claim 1, it is characterised in that: the shell (1) is tubular, shell
(1) stepped throughhole is provided in.
3. a kind of continuous circulating valve according to claim 1, it is characterised in that: the poppet shaft (2) is goblet, valve
Multiple flow channel for liquids (4) are evenly equipped on the shell (1) of mandrel (2) periphery.
4. a kind of continuous circulating valve according to claim 1, it is characterised in that: the bypass valve opening (3) and poppet shaft
(2) it is connected to.
5. a kind of continuous circulating valve according to claim 1, it is characterised in that: the main port valve core (10) is in spindle
Shape is provided with reset spring B(13 on main port valve core (10)), one end of main port valve core (10) and retaining ring B(11) and main port valve bottom
Seat (12) insertion is slidably connected, and the other end of main port valve core (10) extends in poppet shaft (2), extends in poppet shaft (2)
Support base (15) and retaining ring D(9 are provided on main port valve core (10)).
6. a kind of continuous circulating valve according to claim 5, it is characterised in that: the main port valve pedestal (12) and support
Liquid through-hole (20) are respectively arranged on seat (15).
7. a kind of continuous circulating valve according to claim 1, it is characterised in that: be provided on the bypass spool (5)
The flange of umbrella shape, the lower surface of by-pass valve cover (7) are provided with limiting groove, one end of bypass spool (5) by limiting groove with
By-pass valve cover (7) is slidably connected, and the other end and poppet shaft (2) insertion for bypassing spool (5) are slidably connected.
8. a kind of continuous circulating valve according to claim 7, it is characterised in that: the bypass spool below the flange
(5) reset spring A(6 is provided on).
9. a kind of continuous circulating valve according to claim 7, it is characterised in that: be provided on the by-pass valve cover (7)
Feed liquor runner (19), bypass spool (5) are fitted and connected by flange and feed liquor runner (19) port sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206804.1A CN108999581A (en) | 2018-10-17 | 2018-10-17 | A kind of continuous circulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206804.1A CN108999581A (en) | 2018-10-17 | 2018-10-17 | A kind of continuous circulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108999581A true CN108999581A (en) | 2018-12-14 |
Family
ID=64590713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811206804.1A Pending CN108999581A (en) | 2018-10-17 | 2018-10-17 | A kind of continuous circulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108999581A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482560A (en) * | 2021-09-08 | 2021-10-08 | 西南石油大学 | Novel double-valve type continuous circulating valve with clamping device |
| CN116378922A (en) * | 2023-05-31 | 2023-07-04 | 德阳市坤炜机电设备有限公司 | Drilling pumping system and monitoring method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2436646Y (en) * | 2000-07-11 | 2001-06-27 | 刘峰 | Bidirectional stabilizing check valve |
| US20100300543A1 (en) * | 2009-06-01 | 2010-12-02 | Braddick Britt O | Continuous Fluid Circulation Valve for Well Drilling |
| CN103670307A (en) * | 2013-12-09 | 2014-03-26 | 中国石油集团长城钻探工程有限公司 | Short circuit guaranteeing drilling fluid continuous circulation and drilling fluid continuous circulation process thereof |
| CN105756593A (en) * | 2014-12-19 | 2016-07-13 | 中石化胜利石油工程有限公司钻井工艺研究院 | Uninterrupted circulating valve |
| CN205532412U (en) * | 2016-01-14 | 2016-08-31 | 中石化石油工程技术服务有限公司 | Continuous circulating valve |
| CN208830918U (en) * | 2018-10-17 | 2019-05-07 | 长江大学 | A kind of continuous circulating valve |
-
2018
- 2018-10-17 CN CN201811206804.1A patent/CN108999581A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2436646Y (en) * | 2000-07-11 | 2001-06-27 | 刘峰 | Bidirectional stabilizing check valve |
| US20100300543A1 (en) * | 2009-06-01 | 2010-12-02 | Braddick Britt O | Continuous Fluid Circulation Valve for Well Drilling |
| CN103670307A (en) * | 2013-12-09 | 2014-03-26 | 中国石油集团长城钻探工程有限公司 | Short circuit guaranteeing drilling fluid continuous circulation and drilling fluid continuous circulation process thereof |
| CN105756593A (en) * | 2014-12-19 | 2016-07-13 | 中石化胜利石油工程有限公司钻井工艺研究院 | Uninterrupted circulating valve |
| CN205532412U (en) * | 2016-01-14 | 2016-08-31 | 中石化石油工程技术服务有限公司 | Continuous circulating valve |
| CN208830918U (en) * | 2018-10-17 | 2019-05-07 | 长江大学 | A kind of continuous circulating valve |
Non-Patent Citations (2)
| Title |
|---|
| 夏成宇 等: "气体钻井连续循环短节旁通阀的设计与分析", 《石油钻采工艺》, vol. 36, no. 6 * |
| 张强 等: "连续循环阀钻井技术在南海东部大位移井中应用", 《石油矿场机械》, vol. 45, no. 12 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482560A (en) * | 2021-09-08 | 2021-10-08 | 西南石油大学 | Novel double-valve type continuous circulating valve with clamping device |
| CN116378922A (en) * | 2023-05-31 | 2023-07-04 | 德阳市坤炜机电设备有限公司 | Drilling pumping system and monitoring method thereof |
| CN116378922B (en) * | 2023-05-31 | 2023-08-04 | 德阳市坤炜机电设备有限公司 | Drilling pumping system and monitoring method thereof |
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