CN1339650A - Microcomputerized automatic control system for oil and gas well drilling throttling pressure - Google Patents
Microcomputerized automatic control system for oil and gas well drilling throttling pressure Download PDFInfo
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- CN1339650A CN1339650A CN 01136291 CN01136291A CN1339650A CN 1339650 A CN1339650 A CN 1339650A CN 01136291 CN01136291 CN 01136291 CN 01136291 A CN01136291 A CN 01136291A CN 1339650 A CN1339650 A CN 1339650A
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Abstract
The present invention relates to the autocontrol in oil and gas exploitation and the microcomputerized autocontrol system incldues: pressure sensor to measure the pressure inside the vertical pipe and the casing, displacement sensor to measure the opening of the hydraulic throttle valve, pump stroke sensor to measure pump stroke, gas flowmeter to measure the flow rate of separated gas, filter and amplifier to process to collected signals, A/D converter, microcomputer for record, storage, calculation data display and issuing control commands for regulation. The system completes the microcomputerized autocontrol of throttle pressure in underbalance well drilling and realize precise control.
Description
(1) technical field
The invention belongs to the oil-gas exploration and development automation field, specially refer to Microcomputerized automatic control system for oil and gas well drilling throttling pressure.
(2) background technology
In the oil-gas exploration and development engineering; in order to protect oil-gas Layer better; reducing drilling fluid effectively causes damage to oil-gas Layer; simultaneously for reducing or overcoming the influence of pressure reduction to drilling speed; to increase substantially rate of penetration; the successful Mian that improves the oil well probing effectively lowers the integrated cost of oil and gas development; just require the choke pressure that surges is carried out better controlled; adopt the control device of the under-balanced drilling technology and the choke manifold that surges; carry out Long-distance Control and keep stable bottom pressure, minimum degree is reduced in the infringement of oil-gas Layer to realize drilling fluid.
Yet, the control mode of the kill manifold that uses is to observe standpipe, casing pressure table by the people at present, manual adjustments choke valve on demand, the problem that adopts this class mode to exist is that control accuracy is low, inconvenient operation, slow in reacting, man's activity is bigger etc., the pneumatic element that is adopted, be subject to the influence of weather and working environment, this mode is unsuitable for continuous, the accurately control to bottom pressure, can not satisfy under balance pressure drilling and standpipe pressure, casing pressure, choke valve cascading water amount be implemented requirements such as accurately control.Along with development of technology, fast development of computer technology especially, microcomputer is introduced in the control of oil/gas drilling choke pressure, makes above-mentioned controlling level step into new height, has reached the target of accurate control.
(3) summary of the invention
The technical problem that solves is, mode by manual observation control in the control pressurer system of oil/gas drilling can't improve control accuracy, sensitivity, be unsuitable for defectives such as continued operation, and redesign a kind of by microcomputer to choke valve in the kill-job choke manifold, realize control automatically, to satisfy control accuracy, the requirement of sensitivity, for reaching this purpose, the technical scheme that is adopted is, a kind of Microcomputerized automatic control system for oil and gas well drilling throttling pressure, comprise and utilize pressure sensor to measure standpipe and casing pressure, with the displacement sensor throttle valve opening that surges, pump dashes towards the sensor measurement pump, gas flowmeter is measured the gas flow after separating, it is characterized in that, the signal that described each road is gathered carry out that filtering is amplified and
Entering computer after the conversion writes down, stores, calculate standpipe pressure, casing pressure, carrying out data shows, and press and the control of casing pressure requires to send action command to Hydrauservo System according to upright, operate according to pressure control flow step, control servo valve action, System Outlet is regulated control to surge throttle valve opening and responsiveness in the kill-job choke manifold, to realize the accurate control to standpipe pressure, casing pressure.
In the native system operation, utilize pressure feedback signal that standpipe pressure, casing pressure are regulated, realize that its result will improve the science of well control, under-balanced drilling technology greatly to accurate, the stable closed-loop control of controlling parameter.At the oil pressure control section, replace original air-driven hydraulic pump with electric hydraulic pump, in system, also be equipped with simultaneously hydraulic hand-pump, to be the requirement that under the special operation condition situation, also can control smoothly in order satisfying, to make this system can have the control mode of controlling and depositing with microcomputer control and conventional manual.
In the native system, be arranged on control panel
On the control port, be connected to acoustic-optic alarm by feeder line, its effect is when the control appearance is unusual, promptly can send sound, light warning.
The good effect of the technical program is, overcome the dependence manpower and observed defectives such as control accuracy is poor in standpipe, casing pressure table and the simple manual adjustments choke pressure, operation is inconvenient, slow in reacting, native system has been realized the choke pressure microcomputer automatic control of under balance pressure drilling, and reached very accurate control function, when founding pressure-controlled, departure is not more than ± 0.5 μ Pa.
(4) description of drawings
Fig. 1 is a Microcomputerized automatic control system for oil and gas well drilling throttling pressure mainframe outline drawing
Fig. 2 is each parts annexation schematic diagram in this control system
Fig. 3 is a microcomputer signals collecting FB(flow block)
Fig. 4 is the pressure control flow chart
Fig. 5 is a SERVO CONTROL assembly principle block diagram
Fig. 7 a is a gasbag-type accumulator structural representation
Fig. 7 b is a gasbag-type accumulator symbol table diagrammatic sketch
Fig. 8 a is the choke valve structural representation that surges
Fig. 8 b is the choke valve symbol table diagrammatic sketch that surges
(5) specific embodiment
With reference to Fig. 1, represent oil/gas drilling choke pressure automatic microcomputer controller of the present invention The mainframe outline drawing, 1 is rack enclosure, its front panel is provided with computer display 2 and keyboard Box 3, panel side acousto-optic warning hole 5 and power switch and indicator lamp part 6, rack table top One side is provided with choke valve knob 4, and it links to each other with the throttle 12 of cabinet inside, and opposite side is provided with three Position four-way valve 9; With reference to Fig. 2, represent each parts annexation principle in the control system of the present invention Figure, 10 is servo proportion among the figure, it links to each other with servo control division equipments 11, at the oil of oil pressure control In the road, choke valve 12 is connecting respectively electrodynamic pump 15 and manual pump 16, and the fluid in the fuel tank 17 is logical Cross these two oil pumps and communicate with each valve, in the present embodiment, oil circuit is by air bag accumulator 13 and [limit Pressure valve, pressure-relief valve] 14 connect oil circuits, connecting respectively six by the sensor input port of rack and putting Put at different local sensors, they are to gather drilling riser pipe pressure sensor 18, gather drilling well Casing pressure sensor 19 is gathered two sensors 20 and 21 of drilling pump punching, gathers exit gas The sensor 22 of flow and the sensor 23 of gathering the throttle valve opening that surges, these sensors are respectively Image data is delivered to the filter amplification circuit part in the combination control panel 7 in the rack, again by control In the making sheet、
Conversion is delivered to and is carried out numerical calculation, relatively also demonstration in the main frame 8, in the combination control panel 7Control section is connected with acoustic-optic alarm, when system occurs unusually existing Instant alarming when resembling. The lower right side of rack has output port, connects the joint that surges to controlled pin type Stream valve body 24 is realized automatically control.
Claims (4)
1, a kind of Microcomputerized automatic control system for oil and gas well drilling throttling pressure, comprise utilize pressure sensor measure standpipe and casing pressure, with displacement sensor surge throttle valve opening, pump towards the sensor measurement pump dash, the gas flow of gas flowmeter measurement after separating, it is characterized in that, the signal that described each road is gathered carry out that filtering is amplified and
Entering computer after the conversion writes down, stores, calculate standpipe pressure, casing pressure, carrying out data shows, and press and the control of casing pressure requires to send action command to Hydrauservo System according to upright, operate according to pressure control flow step, control servo valve action, System Outlet is regulated control to surge throttle valve opening and responsiveness in the kill-job choke manifold.
2, control system according to claim 1 is characterized in that, in the native system operation, utilizes pressure feedback signal that standpipe pressure, casing pressure are regulated, and realizes accurate, the stable closed-loop control of controlling parameter.
3, control system according to claim 1 is characterized in that, at the oil pressure control section, replaces original air-driven hydraulic pump with electric hydraulic pump.
4, control system according to claim 1 is characterized in that, also has been equipped with hydraulic hand-pump in system simultaneously, makes this system can have microcomputer and controls the control mode of controlling and depositing with conventional manual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01136291 CN1339650A (en) | 2001-10-15 | 2001-10-15 | Microcomputerized automatic control system for oil and gas well drilling throttling pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01136291 CN1339650A (en) | 2001-10-15 | 2001-10-15 | Microcomputerized automatic control system for oil and gas well drilling throttling pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1339650A true CN1339650A (en) | 2002-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01136291 Pending CN1339650A (en) | 2001-10-15 | 2001-10-15 | Microcomputerized automatic control system for oil and gas well drilling throttling pressure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7158886B2 (en) | 2003-10-31 | 2007-01-02 | China Petroleum & Chemical Corporation | Automatic control system and method for bottom hole pressure in the underbalance drilling |
| CN1313700C (en) * | 2004-06-25 | 2007-05-02 | 中国石油天然气股份有限公司 | Control device for well killing operation |
| CN1332122C (en) * | 2004-05-31 | 2007-08-15 | 中国石油天然气股份有限公司 | Multi-stage throttling method for drilling high-pressure oil and gas well |
| CN101737018A (en) * | 2008-11-26 | 2010-06-16 | 西部钻探克拉玛依钻井工艺研究院 | Real-time monitoring method and device of underbalanced drilling well bottom pressure |
| WO2011050500A1 (en) * | 2009-10-30 | 2011-05-05 | 北京联合大学 | Multi-level refined throttle manifold and automatic control system |
| CN103015966A (en) * | 2012-12-20 | 2013-04-03 | 中国科学院自动化研究所 | Visually-operated hydraulic control system of petroleum drilling machine |
| CN103132982A (en) * | 2013-03-22 | 2013-06-05 | 广州东塑石油钻采专用设备有限公司 | Well shutdown system by one key |
| CN109779568A (en) * | 2018-12-14 | 2019-05-21 | 中国石油天然气集团有限公司 | The closed loop control method and system of automation control pressure implementation kill-job |
| CN111577240A (en) * | 2020-04-24 | 2020-08-25 | 洲际海峡能源科技有限公司 | Wireless centralized control system of well drilling well control equipment |
-
2001
- 2001-10-15 CN CN 01136291 patent/CN1339650A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7158886B2 (en) | 2003-10-31 | 2007-01-02 | China Petroleum & Chemical Corporation | Automatic control system and method for bottom hole pressure in the underbalance drilling |
| CN100353027C (en) * | 2003-10-31 | 2007-12-05 | 中国石油化工股份有限公司 | Under balance drilling bottom pressure automatic control system and method |
| CN1332122C (en) * | 2004-05-31 | 2007-08-15 | 中国石油天然气股份有限公司 | Multi-stage throttling method for drilling high-pressure oil and gas well |
| CN1313700C (en) * | 2004-06-25 | 2007-05-02 | 中国石油天然气股份有限公司 | Control device for well killing operation |
| CN101737018B (en) * | 2008-11-26 | 2013-09-18 | 西部钻探克拉玛依钻井工艺研究院 | Real-time monitoring method and device of underbalanced drilling well bottom pressure |
| CN101737018A (en) * | 2008-11-26 | 2010-06-16 | 西部钻探克拉玛依钻井工艺研究院 | Real-time monitoring method and device of underbalanced drilling well bottom pressure |
| WO2011050500A1 (en) * | 2009-10-30 | 2011-05-05 | 北京联合大学 | Multi-level refined throttle manifold and automatic control system |
| CN101694152B (en) * | 2009-10-30 | 2012-12-26 | 中国石油大学(北京) | Multi-level fine choke manifold and automatic control system |
| CN103015966A (en) * | 2012-12-20 | 2013-04-03 | 中国科学院自动化研究所 | Visually-operated hydraulic control system of petroleum drilling machine |
| CN103015966B (en) * | 2012-12-20 | 2015-07-08 | 中国科学院自动化研究所 | Visually-operated hydraulic control system of petroleum drilling machine |
| CN103132982A (en) * | 2013-03-22 | 2013-06-05 | 广州东塑石油钻采专用设备有限公司 | Well shutdown system by one key |
| CN109779568A (en) * | 2018-12-14 | 2019-05-21 | 中国石油天然气集团有限公司 | The closed loop control method and system of automation control pressure implementation kill-job |
| CN109779568B (en) * | 2018-12-14 | 2022-01-04 | 中国石油天然气集团有限公司 | Closed-loop control method and system for automatically controlling pressure to implement well killing |
| CN111577240A (en) * | 2020-04-24 | 2020-08-25 | 洲际海峡能源科技有限公司 | Wireless centralized control system of well drilling well control equipment |
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