CN201460863U - Managed pressure drilling system - Google Patents
Managed pressure drilling system Download PDFInfo
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- CN201460863U CN201460863U CN2009201102933U CN200920110293U CN201460863U CN 201460863 U CN201460863 U CN 201460863U CN 2009201102933 U CN2009201102933 U CN 2009201102933U CN 200920110293 U CN200920110293 U CN 200920110293U CN 201460863 U CN201460863 U CN 201460863U
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Abstract
The utility model relates to a managed pressure drilling system, which is characterized in that a pressure sensor is connected with a data acquisition device, and the data acquisition device is respectively connected with an industrial control computer and a computer; the industrial control computer is connected with a PLC controller, and the PLC controller is respectively connected with a mud pump motor, a back pressure pump motor, a winch motor, a pressure relief valve and a hydraulic control box; a mud pump stroke sensor is arranged on a mud pump, and one end of an underground survey sensor is connected with a drill pipe; the other end thereof is connected with a drill bit, and the outlet end of a rotary control head is divided into two ways by pipelines; one way of the rotary control head is connected with the pressure relief valve, and a pressure relief valve pressure sensor is arranged on the pressure relief valve; the other way thereof is also divided into two ways, one way is connected with a back pressure pump, and one way is connected with the throttle manifold of a managed pressure drilling; a back pressure pump stroke sensor is arranged on the back pressure pump, and a back-pressure pressure sensor is arranged on the throttle manifold of the managed pressure drilling; and a winch drilling speed sensor is arranged on the winch. The system can allow the bottom hole pressure to be in a micro-overbalance state, and prevent or reduce the drilling fluid leakage and formation fluid emission accidents.
Description
Technical field:
The utility model relates to a kind of oilfield drilling field of engineering technology, is the controlled pressure drilling system of accurate control well bottom pressure, raising drilling safety, the nonproductive timeliness of reduction.
Background technology:
Bottom pressure control is the key link in the drilling process.In the conventional drilling process, drilling liquid pressure is to be used for controlling strata pressure and to keep hole stability.Under the inactive state, bottom pressure P
BHOnly with drilling fluid liquid column hydrostatic pressure P
HydRelevant; Under the recurrent state, bottom pressure P
BHBe drilling fluid fluid pressure P
HydWith annular pressure lost P
AFBoth sums.Yet along with oil-gas exploration and development develops to deep water, deep layer, deep water and deep bad ground bring many difficult problems for the control of bottom pressure in traditional drilling process.Particularly bore to meet narrow density window stratum, strata pressure window even less than 0.02g/cm
3, this has just caused in the traditional handicraft drilling process, and turn on pump, drilling fluid leakage is serious when boring down, termination of pumping, problems such as gas cut, well kick takes place when pulling out of hole.These problems have seriously restricted the exploration and the exploitation of narrow density window hydrocarbon stratum.
Controlled pressure drilling is a fast-developing abroad new technology of recent years, this technology is used the equipment of under balance pressure drilling, make drilling fluid be in the endless form of closed loop, accurately control the wellbore annulus pressure section, the wellbore pressure section is between formation pore pressure and fracture pressure, avoids or reduce the generation of complex accident such as leakage and well kick.The controlled pressure drilling technology is be its basic point of departure to solve the drilling complexity accident, adopts underbalance or little overbalance mode to creep into, can be in the drilling process by suitable technology, technology and equipment, and safe, processing pours in the fluid of pit shaft effectively.Compare with under-balanced drilling technology, the controlled pressure drilling technology solved under-balanced drilling technology stratum water outlet, borehole well instability, the reservoir that can't overcome contain H
2Problems such as S.The advantage of controlled pressure drilling technology can be summarized as following some: solve the problem of narrow density window stratum safety drilling, alleviate injury, reduce the down-hole complex accident, improve the safety and the rate of penetration of drilling well the stratum.Therefore, the controlled pressure drilling technology can be used for finishing the drillng operation of highly difficult well, low economic benefit well and former " can not bore " well.
The controlled pressure drilling technology has multiple mode at present, as the uninterrupted circulating system, shaft bottom constant-voltage system, micrometeor control system, the two gradient systems of deep water, pressurized mud cap system and equivalent mud circulation density reduction instrument etc.These technology all have technical characterictic and the range of application of self, and the development degree of its technology also is not quite similar.
The utility model content
The purpose of this utility model provide a cover can be accurately automatically the control well bottom pressure be in the controlled pressure drilling system of balance or little overbalance state, the control well bottom pressure always less than formation leakage pressure, greater than formation pore pressure, avoid the shaft bottom complex accident that drilling fluid leakage or formation fluid are gushed out to occur, under the principle that does not change on-the-spot technician's operating habit, by intervention control to equipment, eliminate the excessive problem of manually-operated bottom hole pressure surge, improve the controlled pressure drilling operating efficiency.
Controlled pressure drilling described in the utility model system is made of pressure sensor, data acquisition unit, computer or server, Industrial Personal Computer (IPC), PLC controller, motor, swivel control head, controlled pressure drilling choke manifold, backpressure pump, mass flowmenter;
Pressure sensor comprises: slush pump towards sensor, backpressure pump towards sensor, winch drilling speed sensor, back pressure pressure sensor, underground survey sensor and overflow valve pressure sensor; Pressure sensor is connected with data acquisition unit by signal-transmitting cable, data acquisition unit is connected with computer with Industrial Personal Computer (IPC) respectively, computer is connected with Industrial Personal Computer (IPC), Industrial Personal Computer (IPC) connects the PLC controller, and the PLC controller is connected with slush pump motor, backpressure pump motor, winch motor, overflow valve and the control cabinet that surges respectively; Slush pump is installed on the slush pump towards sensor, the liquid feeding end of slush pump links to each other with mud pit by slush pump feed liquor pipeline, the water tap that the slush pump port of export drives by hose and top links to each other, underground survey sensor one end is connected with drilling rod, the other end links to each other with drill bit, drilling rod passes preventer combination and the swivel control head that well head is installed, and drives with the top by the protection joint to link to each other; The swivel control head port of export is divided into two-way by pipeline, and one the tunnel connects overflow valve, and overflow valve links to each other with mud pit by relief tube, and the overflow valve pressure sensor is installed on the overflow valve; Another road is divided into two-way again, and the plate valve of leading up to is connected with the drain side of backpressure pump, and one the tunnel connects the liquid feeding end of controlled pressure drilling choke manifold, and backpressure pump links to each other with mud pit by the backpressure pump feed tube; The controlled pressure drilling choke manifold port of export links to each other with the entrance point of mass flowmenter, and the mass flowmenter port of export links to each other with the import of deaerator, and the deaerator outlet connects vibrosieve, and vibrosieve links to each other with mud pit by discharging tube; Backpressure pump is installed on the backpressure pump towards sensor; The back pressure pressure sensor is installed in the controlled pressure drilling choke manifold; The top is driven by fishhook and is linked to each other with tourist bus, and tourist bus links to each other with winch with overhead traveling crane by wirerope, and winch is fixed on the rig floor by screw thread, and winch drilling speed sensor is installed on the winch.
The data that collection of data acquisition modular converter and conversion sensor are measured in real time are transported to waterpower respectively with the data of gathering and calculate and apparatus and process parameter optimization module and analysis-by-synthesis control module.The mode that the drilling well preset parameter imports by manual input or set form is input to waterpower and calculates and apparatus and process parameter optimization module.Waterpower is calculated and apparatus and process parameter optimization module will go out analog result according to the calculation of parameter of input, the hydraulic analogy result also is transported to the analysis-by-synthesis control module simultaneously in real time, real-time image data of analysis-by-synthesis control module comparative analysis and hydraulic analogy result, in the time of need controlling equipment, the analysis-by-synthesis control module is sent control signal to the PLC controller, finishes the control to relevant device.
Waterpower is calculated and apparatus and process is optimized module mainly by following two functions: waterpower design before (1) controlled pressure drilling operation and the real-time hydraulic analogy in the controlled pressure drilling process are calculated; (2) optimize face of land device parameter according to hydraulics result of calculation; The data input is made up of two parts: preset parameter and real-time measurement parameter.Preset parameter comprises well depth, hole diameter, casing program, drill pipe diameter etc.Measurement parameter is directly inputted in the real-time hydraulic model through format conversion in real time.According to the real-time parameter of input simulate the pit shaft drilling fluid of positive drilling well section the hydraulics feature, dope the well hydraulics feature of not drilling well section of this well section, the apparatus and process parameter of the optimum when optimizing this moment apparatus and process parameter, prediction and having beaten this single or column.Adopt real-time underground survey equipment, the data of underground survey equipment are used to proofread and correct waterpower calculating and apparatus and process parameter optimization module under the real-time online pattern, waterpower is calculated and the analog result of apparatus and process parameter optimization module can be presented on the display with graphic file by display, also with certain format the analog result data file is input to the Comprehensive Control module simultaneously.
The analysis-by-synthesis control module receives from the field real-time acquisition data and waterpower is calculated and the analog computation data of apparatus and process parameter optimization module, and contrasts the data of two kinds of correspondences, judges difference between the two.If zero deflection or deviation are in the setting range that allows between the two, equipment will keep existing operational factor so; If difference is greater than the setting range that allows, the analysis-by-synthesis control module just sends a signal to the PLC controller so that control corresponding apparatus so, as borehole pump, backpressure pump and winch etc.As when making up a joint, the data such as start-stop mode pattern of the speed that makes a trip, slush pump start-stop mode and the backpressure pump of required face of land back pressure, bottom pressure, optimization were sent to the analysis-by-synthesis control module when waterpower was calculated and apparatus and process parameter optimization module at first will make up a joint, the Comprehensive Control module is temporary with this result of calculation, and compare with live signal data that sensor obtains, judge the difference between calculated value and real-time measurement values, if difference is in the allowed band, it is constant so then to continue the present operational factor of maintenance equipment.If the difference between calculated value and real-time the measurement exceeds the deviation range of permission, the analysis-by-synthesis control module will be sent control signal to the PLC controller so, and the PLC controller transmits order according to the signal of control module to corresponding apparatus, adjusts the operational factor of equipment.The analysis-by-synthesis control module is all controlled according to optimizing back apparatus and process parameter the control of controlled pressure drilling equipment.
Executive Module is accepted the instruction of analysis-by-synthesis control module, and according to instruction corresponding apparatus is adjusted.
The invention effect:
The present invention is the control well bottom pressure automatically and accurately, make bottom pressure be in little overbalance state always, do not changing on-the-spot big boss's operating habit in principle, intervene control and can fundamentally eliminate the excessive shortcoming of bottom hole pressure surge that manually-operated can't overcome, guarantee that the annular pressure section is between the pore pressure and fracture pressure on stratum in the whole drilling process, avoid or reduce the generation that drilling fluid leakage and formation fluid are gushed out accident, improve narrow density window strata drilling operating efficiency, reduce complex accident.The present invention can be used for the drillng operation of bad grounds such as narrow density window stratum, ocean deepwater, extended reach well.
Description of drawings:
Fig. 1 controlled pressure drilling schematic diagram.
Wherein:
1 slush pump feed liquor pipeline, 2 blowdown lines, 3 mud pits, 4 tapping lines, 5 vibrosieves, 6 backpressure pump feed liquor pipelines, 7 deaerators, 8 slush pumps are towards sensor, 9 slush pumps, 10 safety overflow valves, 11 backpressure pumps, 12 backpressure pumps are towards sensor, 13 mass flowmenters, 14 controlled pressure drilling choke manifolds, 15 back pressure pressure sensors, 16 plate valves, 17 pipelines, 18 hoses, 19 transfer hook, and drive on 20 tops, 21 protection joints, 22 overhead traveling cranes, 23 wireropes, 24 tourist buses, 25 winches, 26 winch drilling speed sensors, 27 rig floors, 28 swivel control heads, 29 annular preventers, 30 drilling rods, 31 underground survey sensors, 32 drill bits;
Fig. 2 control system schematic diagram.
2001 overflow valve pressure sensors, 2002 slush pump drive motors or diesel engines, 2003 backpressure pump drive motors or diesel engines, 2004 winch motors, 2005 control cabinets that surge, 2006PLC controller, 2007 Industrial Personal Computer (IPC)s, 2008 data acquisition units, 2009 computers, 2010 signal-transmitting cables;
Fig. 3 control system high-level schematic functional block diagram.
3001 drilling well preset parameters, 3002 sensor real-time measuring datas, 3003 data acquisition modular converters, 3004 waterpower are calculated and apparatus and process parameter optimization module, 3005 analog results, 3006 analysis-by-synthesis control modules;
The specific embodiment
Controlled pressure drilling described in the utility model system is made of pressure sensor, data acquisition unit, computer or server, Industrial Personal Computer (IPC), PLC controller, motor, swivel control head, controlled pressure drilling choke manifold, backpressure pump, mass flowmenter;
Pressure sensor comprises: slush pump towards sensor 8, backpressure pump towards sensor 12, winch drilling speed sensor 26, back pressure pressure sensor 15, underground survey sensor 31 and overflow valve pressure sensor 2001; Pressure sensor is connected with data acquisition unit 2008 by signal-transmitting cable 2010, data acquisition unit is connected with computer 2009 with Industrial Personal Computer (IPC) 2007 respectively, computer is connected with Industrial Personal Computer (IPC), Industrial Personal Computer (IPC) connects PLC controller 2006, and the PLC controller is connected with slush pump motor 2002, backpressure pump motor 2003, winch motor 2004, overflow valve 10 and the control cabinet 2005 that surges respectively; Slush pump is installed on the slush pump 9 towards sensor 8, the liquid feeding end of slush pump 9 links to each other with mud pit 3 by slush pump feed liquor pipeline 1, slush pump 9 ports of export drive 20 water tap by hose 18 and top and link to each other, underground survey sensor 31 1 ends are connected with drilling rod 30, the other end links to each other with drill bit 32, and the preventer combination 29 that drilling rod 30 passes the well head installation links to each other by protecting joint 21 to drive 20 with the top with swivel control head 28; Swivel control head 28 ports of export are divided into two-way by pipeline 17, and one the tunnel connects overflow valve 10, and overflow valve 10 links to each other with mud pit 3 by relief tube, and overflow valve pressure sensor 2001 is installed on the overflow valve 10; Another road is divided into two-way again, and the plate valve 16 of leading up to is connected with the drain side of backpressure pump 11, and one the tunnel connects the liquid feeding end of controlled pressure drilling choke manifold 14, and backpressure pump 11 links to each other with mud pit 3 by backpressure pump feed tube 6; Controlled pressure drilling choke manifold 14 ports of export link to each other with the entrance point of mass flowmenter 13, and the mass flowmenter port of export links to each other with the import of deaerator 7, and deaerator 7 outlets connect vibrosieve 5, connect vibrosieve 5 and link to each other with mud pit 3 by discharging tube 4; Backpressure pump is installed on the backpressure pump towards sensor 12; Back pressure pressure sensor 15 is installed in controlled pressure drilling choke manifold 14; The top is driven 20 and is linked to each other with tourist bus 24 by fishhook 19, and tourist bus 24 links to each other with winch 25 with overhead traveling crane 22 by wirerope 23. and winch 25 is fixed on the rig floor 27 by screw thread, and winch drilling speed sensor 26 is installed on the winch 25.
The data 3002 that data acquisition modular converter 3003 is gathered and conversion sensor is measured in real time are transported to waterpower respectively with the data of gathering and calculate and apparatus and process parameter optimization module 3004 and analysis-by-synthesis control module 3006.The mode that drilling well preset parameter 3001 imports by manual input or set form is input to waterpower and calculates and apparatus and process parameter optimization module 3004.Waterpower is calculated and apparatus and process parameter optimization module 3004 will go out analog result 3005 according to the calculation of parameter of input, hydraulic analogy result 3005 also is transported to analysis-by-synthesis control module 3006 simultaneously in real time, real-time image data 3002 of analysis-by-synthesis control module 3006 comparative analyses and hydraulic analogy result 3005, in the time of need controlling equipment, analysis-by-synthesis control module 3006 is sent control signal to the PLC controller, finishes the control to relevant device.
Claims (1)
1. a controlled pressure drilling system is to be made of pressure sensor, data acquisition unit, computer or server, Industrial Personal Computer (IPC), PLC controller, motor, swivel control head, controlled pressure drilling choke manifold, backpressure pump, mass flowmenter; It is characterized in that:
Pressure sensor comprise slush pump towards sensor, backpressure pump towards sensor, winch drilling speed sensor, back pressure pressure sensor, underground survey sensor and overflow valve pressure sensor; Pressure sensor is connected with data acquisition unit by signal-transmitting cable, data acquisition unit is connected with computer with Industrial Personal Computer (IPC) respectively, computer is connected with Industrial Personal Computer (IPC), Industrial Personal Computer (IPC) connects the PLC controller, and the PLC controller is connected with slush pump motor, backpressure pump motor, winch motor, overflow valve and the control cabinet that surges respectively; Slush pump is installed on the slush pump towards sensor, the liquid feeding end of slush pump links to each other with mud pit by slush pump feed liquor pipeline, the water tap that the slush pump port of export drives by hose and top links to each other, underground survey sensor one end is connected with drilling rod, the other end links to each other with drill bit, and the preventer combination that drilling rod passes the well head installation links to each other by protecting joint to drive with the top with swivel control head; The swivel control head port of export is divided into two-way by pipeline, and one the tunnel connects overflow valve, and overflow valve links to each other with mud pit by relief tube, and the overflow valve pressure sensor is installed on the overflow valve; Another road is divided into two-way again, and the plate valve of leading up to is connected with the drain side of backpressure pump, and one the tunnel connects the liquid feeding end of controlled pressure drilling choke manifold, and backpressure pump links to each other with mud pit by the backpressure pump feed tube; The controlled pressure drilling choke manifold port of export links to each other with the entrance point of mass flowmenter, and the mass flowmenter port of export links to each other with the import of deaerator, and the deaerator outlet connects vibrosieve, and vibrosieve links to each other with mud pit by discharging tube; Backpressure pump is installed on the backpressure pump towards sensor; The back pressure pressure sensor is installed in the controlled pressure drilling choke manifold; The top is driven by fishhook and is linked to each other with tourist bus, and tourist bus links to each other with winch with overhead traveling crane by wirerope, and winch is fixed on the rig floor by screw thread, and winch drilling speed sensor is installed on the winch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201102933U CN201460863U (en) | 2009-07-30 | 2009-07-30 | Managed pressure drilling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201102933U CN201460863U (en) | 2009-07-30 | 2009-07-30 | Managed pressure drilling system |
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| CN201460863U true CN201460863U (en) | 2010-05-12 |
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| CN101892824A (en) * | 2010-07-22 | 2010-11-24 | 中国石油天然气集团公司 | Combined multi-stage pressure control method and device |
| CN102418509A (en) * | 2010-09-28 | 2012-04-18 | 中国石油化工集团公司 | Indoor test system and method for managed pressure drilling technology |
| CN102454372A (en) * | 2010-10-19 | 2012-05-16 | 中国石油化工集团公司 | Shaft pressure management system and method |
| CN102913160A (en) * | 2012-11-12 | 2013-02-06 | 中国石油集团长城钻探工程有限公司 | Continuous circulation drilling well system |
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| CN103015907A (en) * | 2012-11-23 | 2013-04-03 | 浙江盾安精工集团有限公司 | Cutter bit press-in force control device for fully slewing drilling machine |
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| CN102418509A (en) * | 2010-09-28 | 2012-04-18 | 中国石油化工集团公司 | Indoor test system and method for managed pressure drilling technology |
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| CN104213830A (en) * | 2014-07-30 | 2014-12-17 | 中国石油集团钻井工程技术研究院 | Managed pressure drilling method for geological conditions of narrow safe density window |
| CN104213830B (en) * | 2014-07-30 | 2016-03-16 | 中国石油集团钻井工程技术研究院 | For the controlled pressure drilling method of narrow ' Safe Density Windows geological conditions |
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| CN105332687B (en) * | 2014-08-06 | 2018-05-22 | 新疆格瑞迪斯石油技术股份有限公司 | The setting method and device of well head goal pressure in controlled pressure drilling control system |
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