CN202493232U - Drilling pressure control device - Google Patents
Drilling pressure control device Download PDFInfo
- Publication number
- CN202493232U CN202493232U CN 201220136600 CN201220136600U CN202493232U CN 202493232 U CN202493232 U CN 202493232U CN 201220136600 CN201220136600 CN 201220136600 CN 201220136600 U CN201220136600 U CN 201220136600U CN 202493232 U CN202493232 U CN 202493232U
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- drilling
- pipeline
- pressure
- fixedly connected
- control device
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- 238000005553 drilling Methods 0.000 title claims abstract description 118
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 230000008676 import Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000008021 deposition Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 9
- 238000005086 pumping Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model relates to the field of drilling technology for controlling fluctuation of a pressure at the bottom of a well and discloses a drilling pressure control device. The drilling pressure control device comprises a drilling pump, a well mouth rotary blowout preventer, a circular drilling liquid tank, a return pressure pump, a controlled pressure drilling throttle manifold, a drilling crew throttle manifold, a deposition tank and a liquid-gas separator, wherein the well mouth rotary blowout preventer and a drilling spool are fixedly mounted together; and the inlet of the drilling pump is provided with a liquid inlet pipe in a connecting manner. By adding branch loops of the drilling liquid entering into a shaft, the drilling pressure control device, disclosed by the utility model, has the advantages of reducing difficulty of controlling the pressure of the shaft by the controlled pressure drilling throttle manifold and damage to each valve of the controlled pressure drilling throttle manifold, reducing requirements of the controlled pressure drilling operation to a drilling machine, being better for the implementation of the controlled pressure drilling operation and enabling the drilling liquid entering into the shaft during the controlled pressure drilling operation to reach to the ruled requirements, thereby realizing the goal of controlled pressure drilling; ground devices are simple in structure; and the drilling pressure control device is convenient and easy to operate.
Description
Technical field
the utility model relates to the drilling technology field of controlling bottom hole pressure surge, is a kind of drilling well pressure control device.
Background technology
controlled pressure drilling technology is one of important content of 21 century drilling well development of new techniques, and international-domestic number of applications practice shows that the controlled pressure drilling technology has realistic meaning to safety drilling, the prevention hole condition complicacy of narrow density window well.The range request borehole pump is crossed in controlled pressure drilling turn on pump and termination of pumping can be by the strokes per minute substep turn on pump and the termination of pumping of regulation; Drilling fluid to realize getting in the pit shaft increases and reduces by the staged of stipulating; But the electric drilling machine particularly turn on pump and the termination of pumping of machine dimensions drill can't accurately be controlled, and can not satisfy controlled pressure drilling closes termination of pumping to the borehole pump turn on pump requirement.
Summary of the invention
the utility model provides a kind of drilling well pressure control device; Overcome the deficiency of above-mentioned prior art, it can effectively solve the drilling process middle-opening pump and the problem of controlled pressure drilling to the requirement of borehole pump turn on pump and termination of pumping can't be accurately controlled, can't be satisfied in termination of pumping.
The technical scheme of
the utility model realizes through following measure: a kind of drilling well pressure control device comprises well head rotating blowout preventer, drilling spool, borehole pump, circulating drilling flow container, controlled pressure drilling choke manifold, drilling team's choke manifold, liquid-gas separator, settling tank and backpressure pump; Well head rotating blowout preventer and drilling spool are fixedly installed togather; The import of borehole pump is fixedly connected with feed tube; Be fixedly connected with first pipeline between drilling well delivery side of pump and the well head rotating blowout preventer; Be fixedly connected with second pipeline between feed tube and the circulating drilling flow container; Be fixedly connected with the 3rd pipeline between first pipeline and the circulating drilling flow container, be fixedly connected with the 4th pipeline between the import of well head rotating blowout preventer and controlled pressure drilling choke manifold, be fixedly connected with the 5th pipeline between drilling spool and the drilling team's choke manifold; Be fixedly connected with the 6th pipeline between the outlet of drilling team's choke manifold and the liquid-gas separator; Be fixedly connected with the 7th pipeline between the liquid outlet of liquid-gas separator and the settling tank, be fixedly connected with the 8th pipeline between settling tank and the circulating drilling flow container, be fixedly connected with the 9th pipeline between the outlet of controlled pressure drilling choke manifold and the 7th pipeline; Backpressure pump is fixed together through the tenth pipeline and controlled pressure drilling choke manifold, on the 3rd pipeline of circulating drilling flow container, is installed with slide valve, ball-and-seat and choke valve from first pipeline successively.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
above-mentioned settling tank can be the taper settling tank.
above-mentioned first pipeline can be hard tube.
above-mentioned the 4th pipeline can be high-pressure hose.
the utility model is through increasing the shunting circuit of the drilling fluid that gets into pit shaft; With the difficulty that reduces controlled pressure drilling choke manifold control wellbore pressure with to the infringement of each valve of controlled pressure drilling choke manifold, reduce the requirement of controlled pressure drilling operation to rig, be more conducive to the enforcement of controlled pressure drilling operation; Realize getting in the controlled pressure drilling operation process requirement that the interior drilling fluid of pit shaft reaches regulation simultaneously; With the target of realization controlled pressure drilling, and ground installation is simple in structure, and is easy and simple to handle.
Description of drawings
accompanying drawing 1 is the process flow diagram of the utility model.
Coding in
accompanying drawing is respectively: 1 is the well head rotating blowout preventer, and 2 is drilling spool, and 3 is borehole pump, and 4 is feed tube, and 5 is first pipeline; 6 is the circulating drilling flow container, and 7 is second pipeline, and 8 is the 3rd pipeline, and 9 is the controlled pressure drilling choke manifold, and 10 is the 4th pipeline; 11 is drilling team's choke manifold, and 12 is the 5th pipeline, and 13 is liquid-gas separator, and 14 is the 6th pipeline, and 15 is settling tank; 16 is the 7th pipeline, and 17 is the 8th pipeline, and 18 is the 9th pipeline, and 19 is backpressure pump; 20 is the tenth pipeline, and 21 is slide valve, and 22 is ball-and-seat, and 23 is choke valve.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
embodiment: shown in accompanying drawing 1, this drilling well pressure control device comprises well head rotating blowout preventer 1, drilling spool 2, borehole pump 3, circulating drilling flow container 6, controlled pressure drilling choke manifold 9, drilling team's choke manifold 11, liquid-gas separator 13, settling tank 15 and backpressure pump 19; Well head rotating blowout preventer 1 is fixedly installed togather with drilling spool 2; The import of borehole pump 3 is fixedly connected with feed tube 4; Be fixedly connected with first pipeline 5 between the outlet of borehole pump 3 and the well head rotating blowout preventer 1; Be fixedly connected with second pipeline 7 between feed tube 4 and the circulating drilling flow container 6; Be fixedly connected with the 3rd pipeline 8 between first pipeline 5 and the circulating drilling flow container 6, be fixedly connected with the 4th pipeline 10 between the import of well head rotating blowout preventer 1 and controlled pressure drilling choke manifold 9, be fixedly connected with the 5th pipeline 12 between drilling spool 2 and the drilling team's choke manifold 11; Be fixedly connected with the 6th pipeline 14 between the outlet of drilling team's choke manifold 11 and the liquid-gas separator 13; Be fixedly connected with the 7th pipeline 16 between the liquid outlet of liquid-gas separator 13 and the settling tank 15, be fixedly connected with the 8th pipeline 17 between settling tank 15 and the circulating drilling flow container 6, be fixedly connected with the 9th pipeline 18 between the outlet of controlled pressure drilling choke manifold 9 and the 7th pipeline 16; Backpressure pump 19 is fixed together with controlled pressure drilling choke manifold 9 through the tenth pipeline 20, on the 3rd pipeline 8 of circulating drilling flow container 6, is installed with slide valve 21, ball-and-seat 22 and choke valve 23 from first pipeline 5 successively.Set up the drilling fluid shunting circuit through borehole pump 3, circulating drilling flow container 6 and the 3rd pipeline 8, slide valve 21, choke valve 23 can be controlled automatically, and the minimum bearing capacity that slide valve 21, ball-and-seat 22, choke valve 23, the 3rd pipeline 8 require is 35 MPas.
Can according to actual needs above-mentioned drilling well pressure control device be done further to optimize or/and improve:
are as shown in Figure 1, and settling tank 15 is the taper settling tank.
are as shown in Figure 1, and first pipeline 5 is a hard tube.
are as shown in Figure 1, and the 4th pipeline 10 is a high-pressure hose.
above technical characterictic has constituted the embodiment of the utility model, and it has stronger compliance and implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The method for using of the utility model drilling well pressure control device is undertaken by following step:
(1) when being the duty of normal drilling well or circulation of drilling fluid, slide valve 21 is in closed condition, controls bottom hole pressure surge separately by controlled pressure drilling choke manifold 9, realizes controlled pressure drilling;
(2) when being the turn on pump duty, borehole pump 3 is opened by strokes per minute step by step, opens slide valve 21 the drilling fluid displacement staged that gets in the pit shaft is increased; Shunt through regulating 23 pairs of drilling fluids that get in the pit shaft of choke valve, cooperate the operation of controlled pressure drilling choke manifold 9 and backpressure pump 19 simultaneously, carry out back pressure control; Make the smooth transition of whole pit shaft internal pressure; The balance that keep-ups pressure when treating that turn on pump end-of-job pump gets into normal operating conditions, is closed backpressure pump 19, slide valve 21; Control bottom hole pressure surge separately by controlled pressure drilling choke manifold 9, realize controlled pressure drilling;
When for pass pump work state, borehole pump 3 progressively turns down by strokes per minute
(3), opens slide valve 21 the drilling fluid displacement staged that gets in the pit shaft is reduced; Shunt through regulating 23 pairs of drilling fluids that get in the pit shaft of choke valve; Open backpressure pump 19 simultaneously to cooperate control controlled pressure drilling choke manifold 9, carry out back pressure control, make the smooth transition of whole pit shaft internal pressure; To reach pressure balance; Wait to close pump and finish, close slide valve 21, by controlled pressure drilling choke manifold 9 and backpressure pump 19 control back pressure.
above technical characterictic has constituted the embodiment of the utility model, and it has stronger compliance and implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
Claims (5)
1. a drilling well pressure control device is characterized in that comprising well head rotating blowout preventer, drilling spool, borehole pump, circulating drilling flow container, controlled pressure drilling choke manifold, drilling team's choke manifold, liquid-gas separator, settling tank and backpressure pump; Well head rotating blowout preventer and drilling spool are fixedly installed togather; The import of borehole pump is fixedly connected with feed tube; Be fixedly connected with first pipeline between drilling well delivery side of pump and the well head rotating blowout preventer; Be fixedly connected with second pipeline between feed tube and the circulating drilling flow container; Be fixedly connected with the 3rd pipeline between first pipeline and the circulating drilling flow container, be fixedly connected with the 4th pipeline between the import of well head rotating blowout preventer and controlled pressure drilling choke manifold, be fixedly connected with the 5th pipeline between drilling spool and the drilling team's choke manifold; Be fixedly connected with the 6th pipeline between the outlet of drilling team's choke manifold and the liquid-gas separator; Be fixedly connected with the 7th pipeline between the liquid outlet of liquid-gas separator and the settling tank, be fixedly connected with the 8th pipeline between settling tank and the circulating drilling flow container, be fixedly connected with the 9th pipeline between the outlet of controlled pressure drilling choke manifold and the 7th pipeline; Backpressure pump is fixed together through the tenth pipeline and controlled pressure drilling choke manifold, on the 3rd pipeline of circulating drilling flow container, is installed with slide valve, ball-and-seat and choke valve from first pipeline successively.
2. drilling well pressure control device according to claim 1 is characterized in that settling tank is the taper settling tank.
3. drilling well pressure control device according to claim 1 and 2 is characterized in that first pipeline is a hard tube.
4. drilling well pressure control device according to claim 1 and 2 is characterized in that the 4th pipeline is a high-pressure hose.
5. drilling well pressure control device according to claim 3 is characterized in that the 4th pipeline is a high-pressure hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136600 CN202493232U (en) | 2012-04-01 | 2012-04-01 | Drilling pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136600 CN202493232U (en) | 2012-04-01 | 2012-04-01 | Drilling pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493232U true CN202493232U (en) | 2012-10-17 |
Family
ID=46999466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220136600 Expired - Lifetime CN202493232U (en) | 2012-04-01 | 2012-04-01 | Drilling pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493232U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847287A (en) * | 2014-02-19 | 2015-08-19 | 中国石油化工集团公司 | Balanced pressure drilling pressure control device and method |
| CN106545305A (en) * | 2015-09-23 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of drilling-fluid circulation system and its control method |
| CN107201884A (en) * | 2017-07-10 | 2017-09-26 | 中国石油集团西部钻探工程有限公司 | Fine controlled pressure drilling standpipe flow shunt control device and its back pressure compensation method |
-
2012
- 2012-04-01 CN CN 201220136600 patent/CN202493232U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847287A (en) * | 2014-02-19 | 2015-08-19 | 中国石油化工集团公司 | Balanced pressure drilling pressure control device and method |
| CN106545305A (en) * | 2015-09-23 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of drilling-fluid circulation system and its control method |
| CN106545305B (en) * | 2015-09-23 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of drilling-fluid circulation system and its control method |
| CN107201884A (en) * | 2017-07-10 | 2017-09-26 | 中国石油集团西部钻探工程有限公司 | Fine controlled pressure drilling standpipe flow shunt control device and its back pressure compensation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201104 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 834000 the Xinjiang Uygur Autonomous Region Karamay Hongyan Road No. 80 Western Drilling Engineering Technology Research Institute of science and technology management department Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |
|
| CX01 | Expiry of patent term |