CN201818257U - Wellbore pressure management system - Google Patents
Wellbore pressure management system Download PDFInfo
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- CN201818257U CN201818257U CN2010205669762U CN201020566976U CN201818257U CN 201818257 U CN201818257 U CN 201818257U CN 2010205669762 U CN2010205669762 U CN 2010205669762U CN 201020566976 U CN201020566976 U CN 201020566976U CN 201818257 U CN201818257 U CN 201818257U
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Abstract
The utility model discloses a wellbore pressure management system, which includes a conventional drilling circulation system, an annular back pressure system and a monitoring control system. A main throttling back pressure system of the annular back pressure system implements control on the back pressure in a drilling circulation process; the back pressure control and the automatic grouting are implemented by an auxiliary pump back pressure system of the annular back pressure system when a connection and a trip are made; the automatic switching of a drilling fluid circulation and circulation stop process is implemented by the main throttling back pressure system and the auxiliary pump back pressure system through a hydraulic flat valve; and the monitoring and control system can monitor relative information of the conventional drilling circulation system, the annular back pressure system and slurry, compare a predicted value of a control object with a set value, and then control the annular back pressure system. The wellbore pressure management system can improve control capability of drilling, implement constant bottom pressure in whole process of well drilling or well completion, and also finish automatic grouting in the process of a trip.
Description
Technical field
The utility model relates to a kind of wellbore pressure management system, relates in particular to the system that carries out the wellbore pressure management during a kind of overall process of drilling and well completion.
Background technology
In the conventional drilling process, the drill string endoporus has formed a system that is communicated with, i.e. U-shaped pipe by bit port and annular space.According to U-shaped pipe principle, the bottom pressure expression formula in the conventional drilling process is:
Pb＝Pmd+Pla (1)
In the formula 1, Pb-bottom pressure, Pmd-drilling fluid liquid column hydrostatic pressure, Pla-circulation time annular space friction pressure.
From then in the formula as can be seen, for the depleted stratum of the pressure of narrow pressure window stratum or old filed, the design of conventional mud density can guarantee that bottom pressure equals required pressure (design pressure) when static.Begin circulation time but work as drilling fluid, bottom pressure has increased an annular space friction pressure, just just causes leakage this moment probably.Need reduce mud density at this moment to be lower than formation fracture pressure according to conventional well control, if run into abnormal formation pressure, well kick just might take place thereupon.This will cause extra drilling well nonproductive time, the mud cost that exceeds the quata and frequent well control problem, even can not bore and reach the design well depth, can't realize the management to wellbore pressure rapidly reliably.
Be equipped with drill string one way valve, swivel control head and special-purpose choke manifold in the conventional drilling technical process, whole like this well system can bear certain sleeve pipe back pressure, becomes a kind of closed circulation system, and the bottom pressure expression formula of this moment is:
Pb＝Pmd+Pla+Pa (2)
In the formula 2, Pa-wellhead back pressure (casing pressure).
From then in the formula as can be seen, in the process that circulates and make up a joint, can remedy the variation of annular space friction pressure, thereby can finish wellbore pressure management rapidly by the continuous variation of wellhead back pressure, such as keeping constant bottom pressure.
Patent ZL 200820209869.7,01136291.X and 200310103433.1 have provided the sealing back pressure system in the underbalance process respectively, but because the intrusion well of formation gas, it is longer that this moment, back pressure acted on time in shaft bottom, must close preventer under the serious situation, and can not realize making up a joint and make a trip the wellbore pressure management in the process of these closed systems.
Summary of the invention
The purpose of this utility model just provides a kind of wellbore pressure management system, realizes that bottom pressure keeps constant in the overall process of drilling well or completion, and finishes the operations such as automatic grouting in the process of making a trip.
For achieving the above object, the utility model adopts following design scheme:
A kind of wellbore pressure management system, its monitoring and control system can be monitored the relevant information of the conventional drilling circulating system, annulus back pressure system and mud, predicted value and the setting value of controlling object are compared, then gate ring backlash pressing system;
The top attachment rotation blowout prevention preventer of the blowout preventer set of the conventional drilling circulating system, DHA comprises one way valve;
The diversion outlet of rotating blowout preventer is prized through a four-way valve, and one tunnel process block valve directly arrives mud disposal system, and one tunnel process block valve connects with drilling spool, and one tunnel process block valve connects with the annulus back pressure system;
The annulus back pressure system comprises main throttling back pressure system and auxiliary pump back pressure system; Main throttling back pressure system comprises the flap type that surges, the choke valve that surges, flow meter, and the flap type that wherein surges connects with the four-way valve sled pipeline of upstream, and flow meter connects with the downstream mud disposal system; The auxiliary pump back pressure system comprises auxiliary pump, flow meter, the flap type that surges, choke valve surges, wherein auxiliary pump is divided into two-way through behind the flow meter, one the tunnel prizes pipeline through the flap type that surges with the four-way valve of upstream connects, and another road is through surging choke valve) connect with flow meter upper end pipeline;
Described flow is counted mass flowmenter;
Monitoring and control system can be monitored the relevant information of well system, annulus back pressure system and mud, comprise that drilling well founds the valve position that pressure, casing pressure, well depth, the pressure of the drill, drill bit depth of setting, drill string rotating speed, rate of penetration, slush pump discharge capacity, mud density, mud are returned out discharge capacity, auxiliary pump discharge capacity, auxiliary pump pressure and each hydraulic operated valve, monitor value and setting value to the control object compare, then gate ring backlash pressing system;
The control object can be or individual arbitrarily combination in the upright pressure of drilling well, sleeve pipe back pressure, bottom pressure and the flow;
Monitoring can obtain actual bottom pressure by the ground receiving wastewater facility of measurement-while-drilling system with control system, correction is to the predicted value of bottom pressure, thereby revise the parameter of monitor control system, draw and more reasonably control the object setting value, then monitor value and setting value are compared gate ring backlash pressing system.
The utility model has the advantages that: (1) can improve drilling well control ability, faster, more economical reach final drilling depth; (2) can realize that bottom pressure keeps constant in the whole process of drilling well or completion; (3) realize automatic grouting in the process that makes a trip;
Description of drawings
Fig. 1 is the schematic diagram of a kind of wellbore pressure management system of the utility model.
The 1. conventional drilling circulating systems among the figure, 2. rotation blowout prevention preventer, 3. blowout preventer set, 4. drilling spool, 5. one way valve, 6. measurement while drilling instrument, 7. four-way valve sled, 8. monitor control system, 9. mud circulation pond, 10. mud disposal system, 11. the annulus back pressure system, 12. main throttling back pressure system, 13. auxiliary pump back pressure system, 14. slush pump, 15.16.17.24.26. block valve, 18. auxiliary pumps, the choke valve 19.25. flow meter, 20.23. surge, the 21.22. flap type that surges.
The specific embodiment
Be further described below in conjunction with 1 pair of the utility model of accompanying drawing:
The top attachment rotation blowout prevention preventer 2 of the blowout preventer set 3 of the conventional drilling circulating system 1, DHA comprises one way valve 6 and measurement while drilling instrument 5, the conventional drilling system becomes the sealing pressure bearing system in the drilling process thus.
In the normal drilling process, the back pressure of annulus back pressure system 11 acts on the diversion outlet of rotating blowout preventer 2, and when needs were closed blowout preventer set 3, the back pressure of annulus back pressure system 11 acted on drilling spool 4.
Annulus back pressure system 11 comprises main throttling back pressure system 12 and auxiliary pump back pressure system 13; Main throttling back pressure system 12 comprises the flap type 22 that surges, the choke valve 23 that surges, flow meter 25, and the flap type 22 that wherein surges is prized 7 pipelines with the four-way valve of upstream and connected, and flow meter 25 connects with downstream mud disposal system 10; Auxiliary pump back pressure system 13 comprises auxiliary pump 18, flow meter 19, the flap type 21 that surges, choke valve 20 surges, wherein auxiliary pump 18 is divided into two-way through behind the flow meter 19, one the tunnel prizes 7 pipelines through the flap type 21 that surges with the four-way valve of upstream connects, and another road connects with flow meter 25 upper end pipelines through the choke valve 20 that surges;
Mass flowmenter 25.19 is selected mass flowmenter.
Utilize the main throttling back pressure system 12 of annulus back pressure system 11 to realize the control of back pressure in the drilling well cyclic processes; Back pressure control and automatic grouting when utilizing the auxiliary pump back pressure system 13 of annulus back pressure system 11 to realize making up a joint and making a trip; Main throttling back pressure system 12 utilizes the flap type 21.22 that surges to realize circulation of drilling fluid and the automatic switchover that stops in the cyclic process with auxiliary pump back pressure system 13;
Monitoring and control system 8 can be monitored the relevant information of the conventional drilling circulating system 1, annulus back pressure system 11 and mud, predicted value and the setting value of controlling object are compared, then gate ring backlash pressing system 11.
Monitoring and control system 8 can be monitored the relevant information of well system 1, annulus back pressure system 11 and mud, comprise that drilling well founds the valve position that pressure, casing pressure, well depth, the pressure of the drill, drill bit depth of setting, drill string rotating speed, rate of penetration, slush pump discharge capacity, mud density, mud are returned out discharge capacity, auxiliary pump discharge capacity, auxiliary pump pressure and each hydraulic operated valve, monitor value and setting value to the control object compare, then gate ring backlash pressing system 11.
Described control object can be or individual arbitrarily combination in the upright pressure of drilling well, sleeve pipe back pressure, bottom pressure and the flow.
Monitoring can obtain actual bottom pressure by the ground receiving wastewater facility of measurement-while-drilling system with control system, correction is to the predicted value of bottom pressure, thereby revise the parameter of monitor control system, draw and more reasonably control the object setting value, then monitor value and setting value are compared gate ring backlash pressing system 11.
Claims (6)
1. wellbore pressure management system, it is characterized in that, monitoring and control system (8) can be monitored the relevant information of the conventional drilling circulating system (1), annulus back pressure system (11) and mud, predicted value and setting value to the control object compare, gate ring backlash pressing system (11) then, thereby the generation annulus back pressure is carried out the wellbore pressure management;
The top attachment rotation blowout prevention preventer (2) of the blowout preventer set (3) of the conventional drilling circulating system (1), DHA comprises one way valve (6);
The diversion outlet of rotating blowout preventer (2) is prized (7) through a four-way valve, one tunnel process block valve (17) directly arrives mud disposal system (10), one tunnel process block valve (16) connects with drilling spool (4), and one tunnel process block valve (15) connects with annulus back pressure system (11);
Annulus back pressure system (11) comprises main throttling back pressure system (12) and auxiliary pump back pressure system (13); Main throttling back pressure system (12) comprises the flap type that surges (22), the choke valve that surges (23), flow meter (25), and the flap type (22) that wherein surges connects with four-way valve sled (7) pipeline of upstream, and flow meter (25) connects with downstream mud disposal system (10); Auxiliary pump back pressure system (13) comprises auxiliary pump (18), flow meter (19), the flap type that surges (21), the choke valve that surges (20), wherein be divided into two-way behind auxiliary pump (18) the process flow meter (19), one the tunnel prizes (7) pipeline through the flap type (21) that surges with the four-way valve of upstream connects, and another road connects with flow meter (25) upper end pipeline through the choke valve (20) that surges.
2. a kind of wellbore pressure management system according to claim 1 is characterized in that flow is counted mass flowmenter.
3. a kind of wellbore pressure management system according to claim 1, it is characterized in that, monitoring and control system (8) can be monitored the relevant information of well system (1), annulus back pressure system (11) and mud, comprise that drilling well founds the valve position that pressure, casing pressure, well depth, the pressure of the drill, drill bit depth of setting, drill string rotating speed, rate of penetration, slush pump discharge capacity, mud density, mud are returned out discharge capacity, auxiliary pump discharge capacity, auxiliary pump pressure and each hydraulic operated valve, monitor value and setting value to the control object compare, then gate ring backlash pressing system (11).
4. according to claim 1 or the described a kind of wellbore pressure management system of claim 3, it is characterized in that described control object can be or individual arbitrarily combination in the upright pressure of drilling well, sleeve pipe back pressure, bottom pressure and the flow.
5. a kind of wellbore pressure management system according to claim 1 is characterized in that, is connected with measurement while drilling instrument (5) in the DHA.
6. according to the described a kind of wellbore pressure management system of claim 1, claim 4 and claim 5, it is characterized in that, monitoring can obtain actual bottom pressure by the ground receiving wastewater facility of measurement-while-drilling system with control system, correction is to the predicted value of bottom pressure, thereby revise the parameter of monitor control system, draw and more reasonably control the object setting value, then monitor value and setting value are compared gate ring backlash pressing system (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205669762U CN201818257U (en) | 2010-10-19 | 2010-10-19 | Wellbore pressure management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205669762U CN201818257U (en) | 2010-10-19 | 2010-10-19 | Wellbore pressure management system |
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| CN201818257U true CN201818257U (en) | 2011-05-04 |
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| CN2010205669762U Expired - Lifetime CN201818257U (en) | 2010-10-19 | 2010-10-19 | Wellbore pressure management system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454372A (en) * | 2010-10-19 | 2012-05-16 | 中国石油化工集团公司 | Shaft pressure management system and method |
| CN102606098A (en) * | 2012-04-01 | 2012-07-25 | 中国石油集团西部钻探工程有限公司 | Drilling pressure-control device and usage thereof |
| WO2013059971A1 (en) * | 2011-10-28 | 2013-05-02 | 中国石油集团川庆钻探工程有限公司钻采工程技术研究院 | Well bore pressure model prediction system control method |
| CN104453716A (en) * | 2014-11-10 | 2015-03-25 | 张朝纯 | Compound double-circulation under-balanced casing pipe while-drilling drilling technology |
| CN104533282A (en) * | 2014-11-10 | 2015-04-22 | 张朝纯 | Duplex double-circulating under-balanced drilling technology |
| CN105114031A (en) * | 2015-08-27 | 2015-12-02 | 长江大学 | Method and system for controlling well cementation pressure on account of U-shaped pipe effect |
| CN105178943A (en) * | 2015-09-08 | 2015-12-23 | 中国石油天然气集团公司 | Method for correcting well shaft pressure in real time |
| WO2016081448A1 (en) * | 2014-11-17 | 2016-05-26 | Weatherford Technology Holdings, LLC. | Controlled pressure drilling system with flow measurement and well control |
| CN105626620A (en) * | 2016-03-04 | 2016-06-01 | 中国石油集团渤海钻探工程有限公司 | Downhole electrical-control hydraulic bi-directional power device |
-
2010
- 2010-10-19 CN CN2010205669762U patent/CN201818257U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454372A (en) * | 2010-10-19 | 2012-05-16 | 中国石油化工集团公司 | Shaft pressure management system and method |
| WO2013059971A1 (en) * | 2011-10-28 | 2013-05-02 | 中国石油集团川庆钻探工程有限公司钻采工程技术研究院 | Well bore pressure model prediction system control method |
| RU2570687C1 (en) * | 2011-10-28 | 2015-12-10 | Чайна Нэшнл Петролеум Корпорейшн Чуаньцин Дриллинг Инджиниринг Ко., Лтд. | Downhole pressure control method based on control theory with prediction models and system theory |
| CN102606098A (en) * | 2012-04-01 | 2012-07-25 | 中国石油集团西部钻探工程有限公司 | Drilling pressure-control device and usage thereof |
| CN104453716A (en) * | 2014-11-10 | 2015-03-25 | 张朝纯 | Compound double-circulation under-balanced casing pipe while-drilling drilling technology |
| CN104533282A (en) * | 2014-11-10 | 2015-04-22 | 张朝纯 | Duplex double-circulating under-balanced drilling technology |
| CN104533282B (en) * | 2014-11-10 | 2016-06-08 | 张朝纯 | Compound Two-way Cycle under balance pressure drilling technique |
| WO2016081448A1 (en) * | 2014-11-17 | 2016-05-26 | Weatherford Technology Holdings, LLC. | Controlled pressure drilling system with flow measurement and well control |
| CN105114031A (en) * | 2015-08-27 | 2015-12-02 | 长江大学 | Method and system for controlling well cementation pressure on account of U-shaped pipe effect |
| CN105114031B (en) * | 2015-08-27 | 2018-02-27 | 长江大学 | A kind of well cementation compress control method and system for U-tube effect |
| CN105178943A (en) * | 2015-09-08 | 2015-12-23 | 中国石油天然气集团公司 | Method for correcting well shaft pressure in real time |
| CN105626620A (en) * | 2016-03-04 | 2016-06-01 | 中国石油集团渤海钻探工程有限公司 | Downhole electrical-control hydraulic bi-directional power device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151113 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |
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| CX01 | Expiry of patent term |