CN102606098A - Drilling pressure-control device and usage thereof - Google Patents
Drilling pressure-control device and usage thereof Download PDFInfo
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- CN102606098A CN102606098A CN2012100953431A CN201210095343A CN102606098A CN 102606098 A CN102606098 A CN 102606098A CN 2012100953431 A CN2012100953431 A CN 2012100953431A CN 201210095343 A CN201210095343 A CN 201210095343A CN 102606098 A CN102606098 A CN 102606098A
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Abstract
The invention relates to the technical field of drilling for controlling bottom hole pressure surge, and discloses a drilling pressure-control device and the usage thereof. The drilling pressure-control device comprises a drilling pump, a well mouth rotary blowout preventer, a circular drilling liquid tank, a back pressure pump, a pressure-control drilling choke manifold, a drilling crew choke manifold, a depositing tank and a liquid-vapor separator, the well mouth rotary blowout preventer and a drilling spool are fixedly mounted together, and a feeding port of the drilling pump is connected with a liquid inlet pipe. By means of adding distributing return paths for drilling fluid entering a shaft, difficulty for the pressure-control drilling choke manifold in control of the pressure of the shaft and damage to valves of the pressure-control drilling choke manifold are decreased, the requirements of pressure-control drilling operation on a drilling machine are lowered, implementation of pressure-control drilling operation is more effectively benefited, the drilling fluid entering the shaft during pressure-control drilling operation can meet the specified requirements so that the purpose of pressure-control drilling is realized, and ground equipment is simple in structure and simple and convenient in operation.
Description
Technical field
the present invention relates to control the drilling technology field of bottom hole pressure surge, are a kind of drilling well pressure control device and method for using.
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 invention provides a kind of drilling well pressure control device and method for using; 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.
One of
technical scheme of the present invention 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 one of foregoing invention 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.
Two of technical scheme of the present invention realizes through following measure: a kind of method for using of drilling well pressure control device: undertaken by following step:
(1) when being the duty of normal drilling well or circulation of drilling fluid, slide valve is in closed condition, controls bottom hole pressure surge separately by the controlled pressure drilling choke manifold, realizes controlled pressure drilling;
(2) when being the turn on pump duty, borehole pump is opened by strokes per minute step by step, opens slide valve the drilling fluid displacement staged that gets in the pit shaft is increased; Through regulating choke valve the drilling fluid that gets in the pit shaft is shunted, cooperated the operation of controlled pressure drilling choke manifold and backpressure pump 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, slide valve; Control bottom hole pressure surge separately by the controlled pressure drilling choke manifold, realize controlled pressure drilling;
When for pass pump work state, borehole pump progressively turns down by strokes per minute
(3), opens slide valve the drilling fluid displacement staged that gets in the pit shaft is reduced; Through regulating choke valve the drilling fluid that gets in the pit shaft is shunted; Open backpressure pump simultaneously to cooperate control controlled pressure drilling choke manifold, 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, by controlled pressure drilling choke manifold and backpressure pump control back pressure.
the present invention 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 a process flow diagram of the present invention.
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 present invention is further described:
embodiment one: 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.
Embodiment two: the method for using of this 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 embodiments of the invention, 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 (6)
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.
6. according to the method for using of any described drilling well pressure control device in the claim 1 to 4, it is characterized in that being undertaken by following step:
(1) when being the duty of normal drilling well or circulation of drilling fluid, slide valve is in closed condition, controls bottom hole pressure surge separately by the controlled pressure drilling choke manifold, realizes controlled pressure drilling;
(2) when being the turn on pump duty, borehole pump is opened by strokes per minute step by step, opens slide valve the drilling fluid displacement staged that gets in the pit shaft is increased; Through regulating choke valve the drilling fluid that gets in the pit shaft is shunted, cooperated the operation of controlled pressure drilling choke manifold and backpressure pump 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, slide valve; Control bottom hole pressure surge separately by the controlled pressure drilling choke manifold, realize controlled pressure drilling;
(3) when for pass pump work state, borehole pump progressively turns down by strokes per minute, opens slide valve the drilling fluid displacement staged that gets in the pit shaft is reduced; Through regulating choke valve the drilling fluid that gets in the pit shaft is shunted, opened backpressure pump simultaneously, carry out back pressure control to cooperate control controlled pressure drilling choke manifold; Make the smooth transition of whole pit shaft internal pressure,, wait to close pump and finish to reach pressure balance; Close slide valve, by controlled pressure drilling choke manifold and backpressure pump control back pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100953431A CN102606098A (en) | 2012-04-01 | 2012-04-01 | Drilling pressure-control device and usage thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100953431A CN102606098A (en) | 2012-04-01 | 2012-04-01 | Drilling pressure-control device and usage thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573198A (en) * | 2012-08-03 | 2014-02-12 | 中国石油化工股份有限公司 | Well tube pressure and flow rate management system and method |
| CN103775049A (en) * | 2014-01-24 | 2014-05-07 | 中国石油大学(华东) | Managed pressure drilling experimental device and control method thereof |
| CN103775011A (en) * | 2012-10-22 | 2014-05-07 | 中国石油化工股份有限公司 | Shaft pressure control system and method |
| CN104499973A (en) * | 2014-11-26 | 2015-04-08 | 中国石油集团西部钻探工程有限公司 | Device for replacing rubber core of rotary blowout preventer in pressure control state of pressure control well drilling |
| CN106401512A (en) * | 2016-10-09 | 2017-02-15 | 中国石油集团渤海钻探工程有限公司 | Pressure-control drilling system utilizing automatic shunt manifold for pressure-control drilling and pressure-control drilling 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 |
| CN110331952A (en) * | 2019-07-18 | 2019-10-15 | 北京格瑞迪斯石油技术有限公司 | It is a kind of to be switched fast part flow arrangement for fine controlled pressure drilling |
| CN114635656A (en) * | 2021-11-17 | 2022-06-17 | 中国石油天然气集团有限公司 | Automatic flow-dividing and pressure-supplementing device and method without pump stop during column connection and tripping |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573198B (en) * | 2012-08-03 | 2016-09-07 | 中国石油化工股份有限公司 | wellbore pressure and flow management system and method |
| CN103573198A (en) * | 2012-08-03 | 2014-02-12 | 中国石油化工股份有限公司 | Well tube pressure and flow rate management system and method |
| CN103775011A (en) * | 2012-10-22 | 2014-05-07 | 中国石油化工股份有限公司 | Shaft pressure control system and method |
| CN103775011B (en) * | 2012-10-22 | 2016-10-19 | 中国石油化工股份有限公司 | wellbore pressure control system and control method |
| CN103775049A (en) * | 2014-01-24 | 2014-05-07 | 中国石油大学(华东) | Managed pressure drilling experimental device and control method thereof |
| CN104499973A (en) * | 2014-11-26 | 2015-04-08 | 中国石油集团西部钻探工程有限公司 | Device for replacing rubber core of rotary blowout preventer in pressure control state of pressure control well drilling |
| CN104499973B (en) * | 2014-11-26 | 2017-06-06 | 中国石油集团西部钻探工程有限公司 | The device of rotating blowout preventer rubber core is changed in controlled pressure drilling under pressure control state |
| 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 |
| 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 |
| CN106401512A (en) * | 2016-10-09 | 2017-02-15 | 中国石油集团渤海钻探工程有限公司 | Pressure-control drilling system utilizing automatic shunt manifold for pressure-control drilling and pressure-control drilling method |
| CN106401512B (en) * | 2016-10-09 | 2019-04-12 | 中国石油集团渤海钻探工程有限公司 | A kind of managed pressure drilling system and its controlled pressure drilling method using controlled pressure drilling automatic shunt manifold |
| 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 |
| CN110331952A (en) * | 2019-07-18 | 2019-10-15 | 北京格瑞迪斯石油技术有限公司 | It is a kind of to be switched fast part flow arrangement for fine controlled pressure drilling |
| CN114635656A (en) * | 2021-11-17 | 2022-06-17 | 中国石油天然气集团有限公司 | Automatic flow-dividing and pressure-supplementing device and method without pump stop during column connection and tripping |
| CN114635656B (en) * | 2021-11-17 | 2024-05-28 | 中国石油天然气集团有限公司 | Automatic diversion pressure supplementing device and method without stopping pump during stand column connection and drill lifting |
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Address after: 830026, the Xinjiang Uygur Autonomous Region Urumqi economic and Technological Development Zone, No. 326 South Central Road, West drilling and Drilling Engineering Research Institute, science and technology management Applicant after: CNPC Xibu Drilling Engineering Company Limited 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 Applicant before: CNPC Xibu Drilling Engineering Company Limited |
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Application publication date: 20120725 |