CN1525041A - Automatic adjustment method for injection allocation quantity of oil field water injection well - Google Patents
Automatic adjustment method for injection allocation quantity of oil field water injection well Download PDFInfo
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- CN1525041A CN1525041A CNA031358659A CN03135865A CN1525041A CN 1525041 A CN1525041 A CN 1525041A CN A031358659 A CNA031358659 A CN A031358659A CN 03135865 A CN03135865 A CN 03135865A CN 1525041 A CN1525041 A CN 1525041A
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- spool
- blanking plug
- water nozzle
- injection well
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Abstract
The invention is a method to automatically regulate injection quantity of water injection well in oil field, it installs in advance a regulable valve water injector which can regulate the opening size of the valve and installs a driving shaft on the stopper, which can drive the valve core of the water injector to move, it controls the driving circuit of the electric machine by the MCU signals and drives the electric machine to rotate, the electric machine drives the driving shaft by driving mechanism to rotate so as to regulate the opening size of the water injector, and the flux signal of the water injector is detected by flowmeter and input to MCU control signal input end, which composes a closed-loop control system, achieving the purpose of automatically regulating layered injection quantity. It can regulate the injection quantity of each layer without fishing the stopper and has advantages of convenient use, low operation cost, largely reducing labor strength, enhancing worked efficiency and saving testing cost.
Description
Technical field:
The present invention relates to a kind of Automatic adjustment method that is used for water injection well in oil fields injection allocation amount, belong to water injection well in oil fields injection allocation amount and regulate the control technology field automatically.
Background technology:
Having recovered the oil the middle and later periods in the oil field, adopts the displacement of reservoir oil by filling water technology in a large number.Because a bite well needs the while to a plurality of oil-bearing stratum floodings, in order to reach optimum efficiency, must carry out quantitative injection to different oil reservoirs.In the prior art at present, the oil field mainly is the method that adopts eccentric water filling, this method with water under high pressure from top injection, during through the one-level injection well downhole flow regulator, eccentric orfice from injection well downhole flow regulator injects oil reservoir to part water behind the injection well downhole flow regulator blanking plug by putting in advance, and another part continues to inject other oil reservoir downwards behind all the other injection well downhole flow regulators and blanking plug.Because the aperture of the water nozzle in the prior art on the blanking plug all be a definite value, thus when the injection allocation amount of certain layer of needs change, must salvage the blanking plug of this layer earlier, change the water nozzle in suitable aperture on it after, again blanking plug is rendered to original position.The disadvantage of this method is that workload is big.Particularly when regulating number of plies increase, the number of times of salvaging and throw in blanking plug also is multiplied, and has therefore increased operator's labour intensity greatly and has reduced operating efficiency.For addressing this problem, there is the people once to propose the technical scheme of " the automatically controlled seperated layer water injection of water injection well in oil fields, water transfer method ", though this method can solve some problems, need transform the existing water injection well structure in oil field.Need spend hundreds thousand of RMB owing to transform a bite well, and there are thousands of mouthfuls of water injection wells a common oil recovery factory to units up to a million, if thereby popularize this technology in an all-round way, required improvement expenses will be an astronomical figure.Therefore, the control method of existing water injection well in oil fields injection allocation amount still is not ideal enough.
Summary of the invention:
The objective of the invention is: providing a kind of can keep under the constant situation of the existing tubular column structure of water injection well in oil fields, realize that not pulling blanking plug can regulate each layer injection allocation water injection well in oil fields allocation volume automatic regulation method amount, easy to use, both economical, reduce labour intensity to reach, increase work efficiency, save the purpose of testing cost, thereby overcome the deficiencies in the prior art.
The present invention is achieved in that it comprises the method for in the eccentric injection mandrel that adopts blanking plug to be installed in water injection well in oil fields water filling is carried out in the oil field, it in blanking plug, be equipped with in advance one can the control valve openings of sizes adjustable valve water nozzle, and a power transmission shaft that can drive the spool activity of adjustable valve water nozzle is housed on blanking plug, then with motor, flow meter and single-chip microcomputer and motor-drive circuit are contained in the cylindrical shell in the eccentric injection mandrel that can put water injection well in oil fields into, and on this cylindrical shell, be provided with a power output shaft, one end of this power output shaft is connected with the machine shaft in being contained in cylindrical shell, its other end can be connected with the power transmission shaft on the blanking plug or separate, the signal input part of flow meter detects the injection flow signal by the adjustable valve water nozzle of blanking plug, and count feedback element with the signal input part of detected injection flow signal feedback by the blanking plug water nozzle to single-chip microcomputer with flow, single-chip microcomputer outputs a control signal to motor-drive circuit again according to the feedback signal of flow meter and controls the running of motor, motor drives the valve core movement of adjustable valve water nozzle by the power transmission shaft on power output shaft and the blanking plug, thereby regulates the size of adjustable valve water nozzle opening; The present invention forms closed-loop control system by the blanking plug that an adjustable valve water nozzle is housed, motor, storing flow and single-chip microcomputer and motor-drive circuit, and flow is counted storing flow; Its adjustable valve water nozzle is made up of valve body and movable spool, on valve body, be provided with manhole, be provided with skewed slot on the sidewall of manhole, movable spool is contained in the manhole and can slides in manhole, and movable spool is threaded with power transmission shaft on the blanking plug; Adjustable valve water nozzle also can be made up of valve body and movable spool, is provided with taper hole on valve body, and valve core housing is threaded in its taper hole and with power transmission shaft on the blanking plug; Adjustable valve water nozzle also can be made up of cartridge type valve body and spool, and valve body is enclosed within on the spool, all is provided with the through hole that can stagger mutually and be communicated with on the sidewall of valve body and spool, and spool is fixedlyed connected with the power transmission shaft on the blanking plug; Adjustable valve water nozzle also can be made up of wafer-type valve body and spool, and valve body and spool are superimposed together, and all is provided with the through hole that can stagger mutually and be communicated with on valve body and spool, and spool is fixedlyed connected with the power transmission shaft on the blanking plug; Also be separately installed with a centralizer and a pulling controller at the two ends of cylindrical shell.
Owing to adopted technique scheme, the present invention utilizes the mode of closed-loop control, form a closed-loop control system with the power transmission shaft of single-chip microcomputer and motor-drive circuit, motor, connection motor and water nozzle, adjustable valve water nozzle on the blanking plug and flow meter are common, realize the automatic adjusting of multi-zone flow regulating amount by the size that changes water nozzle valve port in the blanking plug.Use when of the present invention, configure the flow desired value of needed water distribution layer earlier by single-chip microcomputer, motor will be housed, the cylindrical shell of flow meter and single-chip microcomputer and motor-drive circuit is put in the eccentric injection mandrel of water injection well in oil fields, and make the power output shaft sleeve on the cylindrical shell that its power transmission shaft that can drive on the blanking plug is rotated, then with flow meter test actual flow value, and flow desired value and flow rate test value are compared by single-chip microcomputer, rotate according to comparative result control motor, motor rotates and drives corresponding transmission mechanism motion, blanking plug water nozzle port size is changed, and then cause actual flow to change; Flow meter is tested the flow after the change again and is compared and regulate by single-chip microcomputer, stops to regulate after comparative result satisfies required precision, and like this, this water filling layer is surveyed to transfer and finished; And then will carry on the cylindrical shell, its power output shaft is separated with power transmission shaft on the blanking plug, again with it with after the blanking plug of last layer docks, with said method its injection allocation amount is regulated.The present invention once goes into the well and can regulate the water nozzle valve port size of the blanking plug of a plurality of water distribution layers.
The present invention is compared with prior art: at first, replace in the past mechanical pulling water transfer mode from the water transfer mode with electronic water transfer, and once go into the well and can regulate a plurality of water distribution layers.Solved that mechanical pulling water nozzle easily falls that card accident, downhole deployment water nozzle are very difficult, water transfer poor accuracy, problem such as need frequently go into the well, improved the accuracy and the water transfer efficient of water transfer.Secondly, can in original water injection well, directly use, needn't carry out any transformation, save improvement expenses original water injection well by the mode of changing blanking plug.Therefore, prodigiosin of the present invention is enough realizes under the constant situation of the existing tubular column structure of water injection well in oil fields that not pulling blanking plug can regulate the advantage of each layer injection allocation amount keeping, and also have easy to use, running cost is cheap, the advantage that reduces labour intensity greatly, increase work efficiency, save testing cost.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is the logic diagram of closed-loop control of the present invention;
Accompanying drawing 3 is single-chip microcomputer that embodiment adopted and motor-drive circuit schematic diagram of the present invention, and E represents power supply among the figure;
Accompanying drawing 4 is installed in the schematic diagram when using in the eccentric injection mandrel of water injection well in oil fields for blanking plug of the present invention, the arrow among the figure is represented the flow direction of high pressure water injection;
Work schematic diagram when its power transmission shaft was connected with the power transmission shaft of blanking plug when accompanying drawing 5 was put into the eccentric injection mandrel of water injection well in oil fields for cylindrical shell of the present invention, the arrow among the figure is represented the flow direction of high pressure water injection;
Accompanying drawing 6 is provided with the structural representation of the adjustable valve water nozzle of skewed slot for the valve body of installing on the blanking plug of the present invention;
Accompanying drawing 7 is the A-A cross-sectional schematic of accompanying drawing 6;
All be provided with the structural representation of the through hole that can stagger mutually and be communicated with on accompanying drawing 9 the sidewall for the valve body of adjustable valve water nozzle of the present invention and spool;
Accompanying drawing 10 is the B-B cross-sectional schematic of accompanying drawing 9;
Accompanying drawing 11 is the structural representation that adjustable valve water nozzle of the present invention is made up of wafer-type valve body and spool;
Accompanying drawing 12 is that the C of accompanying drawing 11 is to schematic diagram.
The specific embodiment:
Embodiments of the invention: in the present embodiment, flow meter (6) adopts the CLJC type memory-type ultrasonic flowmeter of selling on the market in the prior art, during test traffic, flow meter is put into below the injection well downhole flow regulator that needs test earlier, total flow in the test oil pipe is mentioned flow meter above the injection well downhole flow regulator that needs test again, the total flow in the test oil pipe, automatically twice measurement result is subtracted each other by flow meter, obtain injection flow by the adjustable valve water nozzle of blanking plug; It is the servomotor of EC22 type that motor (5) adopts the model of selling on the market, carries the integrated circuit modules of motor-drive circuit (8) on the motor of this kind model, and its control signal is a Transistor-Transistor Logic level; It is the single-chip microcomputer of AT89C2051 that single-chip microcomputer (7) adopts the model of selling on the market; Also have the power module that model is MAX667 in the control circuit.Wherein AT89C2051 is the core of entire circuit; be responsible for to receive the flow rate test value of flow meter and compare with the flow desired value; according to comparative result output control signal; the state of two control ends of control motor makes the motor forward or reverse, and MAX667 is a source of stable pressure; be responsible for partly providing power supply to digital circuit; when supply voltage is lower than 10V, can also send interrupt signal to single-chip microcomputer (7), realize the under-voltage protection of system.Use when of the present invention, need to adopt the method for in the eccentric injection mandrel (13) that blanking plug (1) is installed in water injection well in oil fields of the prior art water filling is carried out in the oil field, the profile of blanking plug of the present invention (1) is the same with existing blanking plug profile, this blanking plug preferably and model be the supporting use of eccentric injection mandrel of Y341-114, during making, in blanking plug (1), adorn in advance one by valve body (2) and spool (3) form can the control valve openings of sizes adjustable valve water nozzle, and on blanking plug (1), adorn a power transmission shaft (4) that the spool (3) that can drive adjustable valve water nozzle is movable, then with motor (5), flow meter (6) and single-chip microcomputer (7) and motor-drive circuit (8) are contained in the cylindrical shell (9) in the eccentric injection mandrel (13) that can put water injection well in oil fields into, and at power output shaft (10) that can draw in and eject of the last installation of this cylindrical shell (9), the structure of this power output shaft (10) is that an end is processed with the internal polygon cardan axis, the gathering and the method for ejecting of power output shaft (10) are identical with the using method of existing throw in catcher, one end of this power output shaft (10) is connected with the rotating shaft of the motor (5) that is contained in cylindrical shell (9) lining, it is processed with the internal polygon other end and can be connected with the power transmission shaft (4) on the blanking plug (1), make the signal input part of flow meter (6) can detect injection flow signal by the adjustable valve water nozzle of blanking plug (1), and be feedback element with the signal input part of detected injection flow signal feedback by the adjustable valve water nozzle of blanking plug to single-chip microcomputer (7) with flow meter (6), after can being compared according to the flow desired value of the feedback signal of flow meter (6) and input in advance, single-chip microcomputer (7) outputs a control signal to the running of drive circuit (8) control motor (5) again, motor (5) drives spool (3) motion of adjustable valve water nozzle again by the power transmission shaft (4) on power output shaft (10) and the blanking plug (1), thereby realizes automatically the opening of adjustable valve water nozzle being adjusted to the purpose of suitable size; For easy to use and reliable, can a centralizer (11) and a pulling controller (12) be installed respectively at the two ends of cylindrical shell (9), centralizer (11) and pulling controller (12) all can adopt the finished product of selling on the market of the prior art.
The valve body of adjustable valve water nozzle of the present invention (2) can be made into manhole, symmetry is made three skewed slot a on the sidewall of its manhole, movable spool (3) is contained in it can be slided in manhole, movable spool (3) is threaded with power transmission shaft (4) on the blanking plug (1) to get final product; Also the endoporus of the valve body (2) of adjustable valve water nozzle can be made into taper hole b, spool (3) be enclosed among its taper hole b and be threaded and get final product with power transmission shaft (4) on the blanking plug (1); Also the valve body (2) and the spool (3) of adjustable valve water nozzle can be made into tubular, valve body (2) is enclosed within on the spool (3), and on the sidewall of valve body (2) and spool (3), all produce a through hole c that can stagger mutually and be communicated with, spool (3) is fixedlyed connected with the power transmission shaft on the blanking plug get final product then; Perhaps valve body (2) and the spool (3) with adjustable valve water nozzle is made into the wafer-type structure, valve body (2) and spool (3) are superimposed together, and on valve body (2) and spool (3), produce 4 through holes that can stagger mutually and be communicated with symmetrically, and spool (3) fixedlyed connected with the power transmission shaft (4) on the blanking plug (1).
Claims (7)
1, a kind of water injection well in oil fields allocation volume automatic regulation method, it comprises the method for in the eccentric injection mandrel that adopts blanking plug to be installed in water injection well in oil fields water filling is carried out in the oil field, it is characterized in that: it in blanking plug, be equipped with in advance one can the control valve openings of sizes adjustable valve water nozzle, and a power transmission shaft that can drive the spool activity of adjustable valve water nozzle is housed on blanking plug, then with motor, flow meter and single-chip microcomputer and motor-drive circuit are contained in the cylindrical shell in the eccentric injection mandrel that can put water injection well in oil fields into, and on this cylindrical shell, be provided with a power output shaft, one end of this power output shaft is connected with the machine shaft in being contained in cylindrical shell, its other end can be connected with the power transmission shaft on the blanking plug or separate, the signal input part of flow meter detects the injection flow signal by the adjustable valve water nozzle of blanking plug, and count feedback element with the signal input part of detected injection flow signal feedback by the blanking plug water nozzle to single-chip microcomputer with flow, single-chip microcomputer outputs a control signal to motor-drive circuit again according to the feedback signal of flow meter and controls the running of motor, motor drives the valve core movement of adjustable valve water nozzle by the power transmission shaft on power output shaft and the blanking plug, thereby regulates the size of adjustable valve water nozzle opening.
2, water injection well in oil fields allocation volume automatic regulation method according to claim 1, it is characterized in that: form closed-loop control system by the blanking plug that an adjustable valve water nozzle is housed, motor, storing flow and single-chip microcomputer and motor-drive circuit, flow is counted storing flow.
3, water injection well in oil fields allocation volume automatic regulation method according to claim 1, it is characterized in that: adjustable valve water nozzle is made up of valve body and movable spool, on valve body, be provided with manhole, on the sidewall of manhole, be provided with skewed slot, movable spool is contained in the manhole and can slides in manhole, and movable spool is threaded with power transmission shaft on the blanking plug.
4, according to the described water injection well in oil fields allocation volume automatic regulation method of claim 1, it is characterized in that: adjustable valve water nozzle also can be made up of valve body and movable spool, be provided with taper hole on valve body, valve core housing is threaded in its taper hole and with power transmission shaft on the blanking plug.
5, according to the described water injection well in oil fields allocation volume automatic regulation method of claim 1, it is characterized in that: adjustable valve water nozzle also can be made up of cartridge type valve body and spool, valve body is enclosed within on the spool, all be provided with the through hole that can stagger mutually and be communicated with on the sidewall of valve body and spool, spool is fixedlyed connected with the power transmission shaft on the blanking plug.
6, according to the described water injection well in oil fields allocation volume automatic regulation method of claim 1, it is characterized in that: adjustable valve water nozzle also can be made up of wafer-type valve body and spool, valve body and spool are superimposed together, all be provided with the through hole that can stagger mutually and be communicated with on valve body and spool, spool is fixedlyed connected with the power transmission shaft on the blanking plug.
7, water injection well in oil fields allocation volume automatic regulation method according to claim 1 is characterized in that: also be separately installed with a centralizer and a pulling controller at the two ends of cylindrical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031358659A CN1525041A (en) | 2003-09-16 | 2003-09-16 | Automatic adjustment method for injection allocation quantity of oil field water injection well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031358659A CN1525041A (en) | 2003-09-16 | 2003-09-16 | Automatic adjustment method for injection allocation quantity of oil field water injection well |
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| CNA031358659A Pending CN1525041A (en) | 2003-09-16 | 2003-09-16 | Automatic adjustment method for injection allocation quantity of oil field water injection well |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100422504C (en) * | 2004-11-27 | 2008-10-01 | 大庆油田有限责任公司第一采油厂 | Method of regulating layered water distribution using pressure wave |
| CN101787878A (en) * | 2010-04-01 | 2010-07-28 | 大庆油田有限责任公司 | Intelligent injection allocation instrument of water injection well |
| CN102031967A (en) * | 2009-09-25 | 2011-04-27 | 贵州航天凯山石油仪器有限公司 | Layered flow test method and flow regulator used in same |
| CN101270647B (en) * | 2008-04-24 | 2011-05-11 | 中国海洋石油总公司 | Injection allocation volume automatic regulation method for marine oil-field water injection well |
| CN101270646B (en) * | 2008-05-22 | 2011-06-08 | 大庆油田有限责任公司 | Water injection well down-hole water sound intelligent control regulating and measuring system |
| CN101624906B (en) * | 2009-05-20 | 2012-02-08 | 边威 | Passive pressure increasing and decreasing water distribution method |
| CN102482938A (en) * | 2009-06-03 | 2012-05-30 | 英国石油勘探运作有限公司 | Method And System For Configuring Crude Oil Displacement System |
| CN103291230A (en) * | 2013-05-27 | 2013-09-11 | 贵州航天凯山石油仪器有限公司 | Method and device for grabbing and releasing multiple water nozzles in underground environment |
| CN104747108A (en) * | 2015-02-10 | 2015-07-01 | 中国石油天然气股份有限公司 | Multifunctional electric control throwing and dragging device |
| CN105422047A (en) * | 2015-10-16 | 2016-03-23 | 贵州航天凯山石油仪器有限公司 | Whole-pipe descaling device allowing descaling modes to be switched and whole-pipe descaling method |
| CN108999601A (en) * | 2018-07-26 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of chemical flooding dispensing well zonal flow rate deployment device and concocting method |
| CN109751006A (en) * | 2019-03-06 | 2019-05-14 | 牡丹江市江丰石油仪表配件厂 | A kind of more fishings are automatic to store special-shaped guide type throw in catcher |
| CN110206517A (en) * | 2019-06-26 | 2019-09-06 | 山东大东联石油设备有限公司 | A kind of injection well downhole flow regulator |
| CN112240185A (en) * | 2020-10-26 | 2021-01-19 | 中国石油天然气股份有限公司 | Injection regulating assembly, injection allocator, and polymer injection dynamic blending device and process |
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- 2003-09-16 CN CNA031358659A patent/CN1525041A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100422504C (en) * | 2004-11-27 | 2008-10-01 | 大庆油田有限责任公司第一采油厂 | Method of regulating layered water distribution using pressure wave |
| CN101270647B (en) * | 2008-04-24 | 2011-05-11 | 中国海洋石油总公司 | Injection allocation volume automatic regulation method for marine oil-field water injection well |
| CN101270646B (en) * | 2008-05-22 | 2011-06-08 | 大庆油田有限责任公司 | Water injection well down-hole water sound intelligent control regulating and measuring system |
| CN101624906B (en) * | 2009-05-20 | 2012-02-08 | 边威 | Passive pressure increasing and decreasing water distribution method |
| CN102482938A (en) * | 2009-06-03 | 2012-05-30 | 英国石油勘探运作有限公司 | Method And System For Configuring Crude Oil Displacement System |
| CN102031967A (en) * | 2009-09-25 | 2011-04-27 | 贵州航天凯山石油仪器有限公司 | Layered flow test method and flow regulator used in same |
| CN101787878A (en) * | 2010-04-01 | 2010-07-28 | 大庆油田有限责任公司 | Intelligent injection allocation instrument of water injection well |
| CN101787878B (en) * | 2010-04-01 | 2013-02-27 | 大庆油田有限责任公司 | Intelligent injection allocation instrument of water injection well |
| CN103291230A (en) * | 2013-05-27 | 2013-09-11 | 贵州航天凯山石油仪器有限公司 | Method and device for grabbing and releasing multiple water nozzles in underground environment |
| CN103291230B (en) * | 2013-05-27 | 2016-04-13 | 贵州航天凯山石油仪器有限公司 | The method and apparatus capturing and throw in branched water nozzle is realized in down-hole |
| CN104747108A (en) * | 2015-02-10 | 2015-07-01 | 中国石油天然气股份有限公司 | Multifunctional electric control throwing and dragging device |
| CN104747108B (en) * | 2015-02-10 | 2017-06-16 | 中国石油天然气股份有限公司 | Multifunction electro-controlled pulling device |
| CN105422047A (en) * | 2015-10-16 | 2016-03-23 | 贵州航天凯山石油仪器有限公司 | Whole-pipe descaling device allowing descaling modes to be switched and whole-pipe descaling method |
| CN108999601A (en) * | 2018-07-26 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of chemical flooding dispensing well zonal flow rate deployment device and concocting method |
| CN108999601B (en) * | 2018-07-26 | 2021-04-13 | 中国石油天然气股份有限公司 | Chemical flooding separate injection well layered flow rate allocation method |
| CN109751006A (en) * | 2019-03-06 | 2019-05-14 | 牡丹江市江丰石油仪表配件厂 | A kind of more fishings are automatic to store special-shaped guide type throw in catcher |
| CN110206517A (en) * | 2019-06-26 | 2019-09-06 | 山东大东联石油设备有限公司 | A kind of injection well downhole flow regulator |
| CN110206517B (en) * | 2019-06-26 | 2021-09-28 | 山东大东联石油设备有限公司 | Water distributor |
| CN112240185A (en) * | 2020-10-26 | 2021-01-19 | 中国石油天然气股份有限公司 | Injection regulating assembly, injection allocator, and polymer injection dynamic blending device and process |
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Owner name: GUIZHOU AEROSPACE KAISHAN PETROLEUM INSTRUMENT CO Free format text: FORMER OWNER: GUIZHOU AEROSPACE KAISHAN PETROLEUM INSTRUMENT CO., LTD. Effective date: 20060113 |
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Effective date of registration: 20060113 Address after: 563124 box 251, Kai Shan, Guizhou Applicant after: Guizhou Aerospace Kaishan Petroleum Instrument Co., Ltd. Co-applicant after: No.3 Oil Production Factory, Daqing Oil Field Co., Ltd. Address before: 563124 box 251, Kai Shan, Guizhou Applicant before: Guizhou Aerospace Kaishan Petroleum Instrument Co., Ltd. |
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