CN1601053A - Method for measuring and adjusting flux of separated-zone water infection oil field - Google Patents
Method for measuring and adjusting flux of separated-zone water infection oil field Download PDFInfo
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- CN1601053A CN1601053A CN 200410081195 CN200410081195A CN1601053A CN 1601053 A CN1601053 A CN 1601053A CN 200410081195 CN200410081195 CN 200410081195 CN 200410081195 A CN200410081195 A CN 200410081195A CN 1601053 A CN1601053 A CN 1601053A
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Abstract
The invention is a method of testing and regulating oil-field layered injected water flow, and its characteristic: putting down flow testing and regulating meter to butt with regulable flow stopper in the deviation hole of an eccentric water distributor, and then measure the actual flow by an electromagnetic flowmeter in the flow testing and regulating meter and then sending the measured result through the cable to a ground control system, comparing the measured signal with the water injection set signal for the layer by the ground control system: if they do not tally with each other, it sends a control instrument to regulate water injection to the flow testing and regulating meter to drive a regulating rod on the flow stopper for regulating the size of water outlet by the butt joint, and then achieving the purpose of regulating water injection. The invention has the characters of high testing precision and short time for testing and regulating.
Description
Technical field:
The present invention relates to a kind of method used in the oil recovery field, oil field, especially relate to a kind of method that the stratum water injection rate is regulated in test in oil recovery process.
Background technology:
Present oil field is carried out the common method that adopts of seperated layer water injection and is: utilize the memory-type turbine flowmeter as conventional stratified flow rate test downhole flowmeter, read data on flows by the ground playback then, determine according to flow results whether needs carry out the water injection rate adjusting; When the water injection rate adjusting is carried out in decision, at first need the down-hole blanking plug is taken out, replace with the satisfactory water nozzle of possibility, then this blanking plug is lowered in the eccentric center water-distributing separate injection tubing string, remeasures water injection rate, if conform to then no longer adjust water nozzle, if do not conform to, then need to readjust water nozzle, the rest may be inferred, until the requirement that meets geology injection allocation scheme.Make in this way, exist two big defectives, at first, under this method, must adopt the diminishing method calculated flow rate, test process is begun up to measure successively by the orlop flow, up to all layer EOTs.The diminishing method cardinal principle is: supposing that water injection well M divides four interval water fillings, is layer 1, layer 2, layer 3, layer 4 successively from well head to the downhole interval sequence number.Test process is successively by layer 4, layer 3, layer 2, layer 1.Suppose that the flow size that flow meter records is Q
StreamSo, the actual flow of each layer then is followed successively by Q
Layer 4=Q
Stream, Q
Layer 3=Q
Stream-Q
Layer 4, Q
Layer 2=Q
Stream-Q
Layer3-Q
Layer 4, Q
Layer 1=Q
Stream-Q
Layer 2-Q
Layer 3-Q
Layer 4Owing to there is interlayer interference, therefore this computational methods cause the test passes rate lower inevitably, survey between timing longer; Secondly, under this method, need carry out must at first pulling the down-hole blanking plug out when the water yield is adjusted, according to water yield size, the artificial ceramic water nozzle of replacing of selecting, then, blanking plug behind the ceramic water nozzle of replacing is put in the corresponding hole partially again, proceeded to measure, until reaching the water injection rate that satisfies the geological scheme requirement, long between so just feasible survey timing to water injection well, efficient is transferred in the survey that has influenced the oil field greatly.Use this method, the average individual well in Xing Bei oil field is surveyed between timing and has been reached 4 to 5 days, and therefore, efficient is lower.
Summary of the invention:
For overcome the test passes rate that exists in the seperated layer water injection adjustment method that existing water injection well in oil fields adopts lower, survey long between timing, survey and transfer inefficient deficiency, the invention provides a kind of seperated layer water injection adjustment method that can promptly carry out water yield adjustment in the test water injection rate, this kind surveyed the characteristics that accent interlock stratified flow rate method for testing has the measuring accuracy height, surveys weak point between timing.
Technical scheme of the present invention is: this method is made up of following step:
(1) the adjustable blanking plug of flow that will mainly be made of governor motion, steel ball locking mechanism, filter screen, current stabilization and ceramic adjustable water nozzle is put in the inclined to one side hole of the eccentric injection mandrel that has two bridge-type through holes on the main body;
(2) utilize flow metering and adjusting apparatus that cable on the winch will be mainly be made up of electromagnetic flowmeter and double plate root testing seal section etc. to dock with the adjustable blanking plug of flow in the inclined to one side hole of eccentric injection mandrel;
(3) electromagnetic flowmeter in the flow metering and adjusting apparatus is uploaded to ground control system with measurement result by control cables after recording actual flow;
(4) ground control system compares the measuring-signal that receives and the setting water injection rate signal of this layer, if do not conform to, then sends the control instruction of adjusting water injection rate;
(5) control instruction of being sent by ground control system is passed to flow metering and adjusting apparatus by cable, drives the motor rotation of its control and regulation bar, and then the up-down adjustment bar on the adjustable blanking plug is rotated, and changes the size of adjustable water nozzle, realizes the adjustment of flow;
(6) flow metering and adjusting apparatus is carried from the interval of measuring, having debugged after, sending instruction by ground control system regains the ejection jack of measurement and adjustment instrument, measurement and adjustment instrument is ejected from the adjustable blanking plug of flow, enter next interval and test in the adjustable blanking plug and eject, enter next stratum and test;
(7) successively test is regulated, until reaching the water yield that geology injection allocation scheme requires.
The present invention has following beneficial effect: when regulating owing to the water injection rate of taking such scheme to carry out water injection well, can obtain the accurate water yield at individual layer, adjust water injection rate in real time by ground system control then, single-interval test, adjustment have been realized, need not to utilize again the layering Calculation Method to calculate water injection rate, solve the error that the diminishing method test is produced, therefore realized the dynamic adjustment of laminated distributor under well water injection rate, improved measuring accuracy; In addition, utilize this kind method to need not the down-hole blanking plug is taken out the adjustment that can finish water injection rate, therefore avoided frequent taking-up blanking plug to change the work of water nozzle, reduced working strength of workers, improved the survey of water injection well and transferred efficient.
Description of drawings:
Accompanying drawing 1 is to use the schematic diagram of the present invention when carrying out work;
The structure diagram of the flow metering and adjusting apparatus that accompanying drawing 2 is among the present invention to be applied to;
The structure sectional view of the adjustable blanking plug that accompanying drawing 3 is among the present invention to be applied to;
Ground Control case electrical schematic diagram in the ground control system that accompanying drawing 4 is among the present invention to be applied to;
Control circuit board electrical schematic diagram one in the ground control system that accompanying drawing 5 is among the present invention to be applied to;
Control circuit board electrical schematic diagram two in the ground control system that accompanying drawing 6 is among the present invention to be applied to.
1-overcoat among the figure, 2-raises pole, 3-groove, the 4-groove, 5-stage, 6-keyway, the 7-spring, 8-opening, 9-slide block, the 10-swivel nut, 11-helical axis, 12-interstage sleeve, the 13-spring, 14-cable head joint, 15-dc motor, the 16-Hooks coupling universal coupling, 17-jack, the butt joint of 18-blanking plug, the 19-water export, 20-electromagnetic flowmeter, 21-water stream channel, the 22-guiding mechanism, 23-connects support, 24-double plate root testing seal section, the S1-programmable controller, S2-transformer, S3-digital quantity output module, the S4-pulse counter module, S5-downhole logging instrument device control circuit board, S6-RS232/RS485 communication protocol module.
The specific embodiment:
The invention will be further described below in conjunction with accompanying drawing:
Accompanying drawing 1 is to use the schematic diagram of the present invention when carrying out work, and as can be seen from the figure involved instrument can be divided into two major parts: ground instrument and downhole instrument.Wherein, ground instrument finish to the power supply of downhole instrument control, upload Signal Processing and collection and with the communication of downhole instrument; Downhole instrument is finished the survey conditioning function, is the core of whole system.
When carrying out the flux of separated-zone water infection oil field test and adjusting, at first adjustable blanking plug is put in the inclined to one side hole of the eccentric injection mandrel that has two bridge-type through holes on the main body.Here, the tubing string part mainly is made up of Y341-114MS packer and 665-6 eccentric injection mandrel and ball seat etc.The 665-6 eccentric injection mandrel is to have on the 665-6 eccentric injection mandrel main body two bridge-type through holes with the difference of the conventional 665-2 eccentric injection mandrel that uses, it can realize the test of flow single deck tape-recorder, and do not influence the normal water filling of other intervals, thereby, interlayer interference can be reduced greatly.The structure sectional view of the adjustable blanking plug of flow as shown in Figure 3, the adjustable blanking plug of this flow comprises overcoat 1, raises pole 2 and swivel nut 10, there are two corresponding L shaped grooves 3 overcoat 1 external surface upper end, 3 times annular grooves 4 of groove, there are two stages 5 overcoat 1 lower end, and raising pole 2 upper end conical surfaces has three keyways 6, and keyway 6 conveniently is connected with tester, 3 locking actions of groove, stage 5 can make overcoat 1 and sliding sleeve be slidingly connected; Raise pole 2 lower ends and be connected with slide block 9, slide block 9 holes are built-in with spring 7, slide block 9 lower ends have opening 8, being covered with top in the opening 8 is the helical axis 11 of rectangle, and helical axis 11 lower ends are connected with swivel nut 10 by screw thread, helical axis 11 outer interstage sleeve 12 and the springs 13 of being covered with successively, can give dynamic and static valve with power transmission like this, drive swivel nut 10 when rotating rise bar 2, swivel nut 10 drives moving valve and rotates, and the water hole of feasible moving valve is corresponding with the water hole of quiet valve.
After adjustable blanking plug being put in the inclined to one side hole of the eccentric injection mandrel that has two bridge-type through holes on the main body, utilize flow metering and adjusting apparatus that cable on the winch will be mainly be made up of electromagnetic flowmeter and double plate root testing seal section etc. to dock with the adjustable blanking plug of flow in the inclined to one side hole of eccentric injection mandrel.Be illustrated in figure 2 as the structure diagram of flow metering and adjusting apparatus, as can be seen from Figure, this kind separated-zone water infection oil field flow metering and adjusting apparatus, device for subsurface measuring partly comprises cable head joint 14, dc motor 15, Hooks coupling universal coupling 16, electromagnetic flowmeter 20 and jack 17, blanking plug butt joint 18 and guiding mechanism 22, and the structure of these parts, concrete connected mode and the function of being finished separately are as follows:
Cable head joint 14 links to each other with cable link on the dc motor 15, the fuselage of dc motor 15 is fixed on the hollow connection support 23 of flow metering and adjusting apparatus, the axis of Hooks coupling universal coupling 16 is fixed in the power transmission shaft lower end of dc motor 15, and the turning cylinder of Hooks coupling universal coupling 16 lower ends then links with the upper end turning cylinder of blanking plug butt joint 18.
Jack 17 is made of two " L " shape steel poles, two quarter butt ends wherein are connected on the support of blanking plug butt joint 18, its connected mode is for being rotationally connected, two stock ends wherein are connected to the two ends up and down on the connection support 23 of described flow metering and adjusting apparatus respectively, and its connected mode is for being rotationally connected.
When dc motor 15 begins to clockwise rotate under the effect of the control signal that ground control system is sent, Hooks coupling universal coupling 16 begins to do to rotate in the same way under the rotating torque effect that comes from the axle of dc motor 15, under the effect of this rotatory force, blanking plug butt joint 18 is pulled outwardly out along the run-on point on the jack 17.
Electromagnetic flowmeter 20 is fixed in the lower end that connects support 23 by two double plate root testing seal sections 24 as shown in the figure, wherein the effect of water export 19 is and can joins with the flow inlet on the blanking plug, makes the water of process water stream channel 21 to enter the purpose stratum by blanking plug.Guiding mechanism 22 mainly is to be made of a steel pole that has the location sliding recess, it is fixed in the lower end of electromagnetic flowmeter 20 by being rotationally connected, the guide peg of the adjustable blanking plug in down-hole can be along the location sliding recess in it along linear slide, its effect is exactly to be adjustable blanking plug location, down-hole, can realize accurately docking with the water yield adjusting rod that has keyway 6 on the adjustable blanking plug to guarantee the blanking plug butt joint 18 on the measurement and adjustment instrument.
When concrete the use, at first this separated-zone water infection oil field correctly is connected with GCU with flow metering and adjusting apparatus, be about to power cable and be connected to dc motor 15 by the part lead in the cable head joint 14, the measuring-signal of electromagnetic flowmeter is also uploaded by the part output cable in the cable head joint 14, the purpose of this configuration is to realize detecting in real time the seperated layer water injection amount, and measuring-signal is transferred to ground control system by cable, after comparing with the desired numerical value of geology injection allocation scheme, output control signal, this control signal can be controlled dc motor 15 rotations.When dc motor 15 turned clockwise, jack 17 beginning slowly was pulled the back and ejects, in the keyway 6 that blanking plug raises pole enters blanking plug butt joint 18 on the measurement and adjustment instrument.At this moment dc motor will begin to drive the adjustable blanking plug in down-hole and raise pole and be rotated counterclockwise under the effect that comes from the Ground Control signal, because the adjustable blanking plug in down-hole raises the opening degree of valve in the pole control blanking plug, so so far just can realize the dynamic control of flux of separated-zone water infection.
With flow metering and adjusting apparatus with after the adjustable blanking plug of the flow that is positioned at the inclined to one side hole of eccentric injection mandrel docks, measurement result is uploaded to ground control system again by control cables after recording actual flow by the electromagnetic flowmeter in the ground control system control flow metering and adjusting apparatus; Ground control system compares the measuring-signal that receives and the setting water injection rate signal of this layer, if do not conform to, then sends the control instruction of adjusting water injection rate.Here ground control system as shown in fig. 1, mainly refers to the ground instrument part.Ground control system is powered to downhole instrument according to the job requirement of downhole instrument, after downhole instrument is powered, survey regulation and control system circuit and can decide the action of downhole instrument according to the polarity of the signal of position sensor and power supply, i.e. instrument folding and unfolding, flow measurement are still regulated.If instrument folding and unfolding and Flow-rate adjustment, then motor can be carried out corresponding action.If flow measurement, ground instrument can send flow, pressure, the corresponding communication signal of temperature survey, and single chip part is opened corresponding passage according to communication signal, measures flow, temperature and pressure, modulation and hop are finished the modulation and the transmission of signal simultaneously, and signal is passed to ground.Ground instrument receives the signal of downhole instrument, signal is handled, and uploaded to the portable machine demonstration.
Ground Control case electrical schematic diagram in the ground control system that Fig. 4 is among the present invention to be applied to, external ac power source 220V five core hole aviation socket pins CZ1-1, CZ1-2 from the Ground Control case panel import control cabinet.Power knob AN, the fuse FU of AC power on Ground Control case panel of input is connected to power transformer B.
Power transformer S2 plays power conversion and buffer action.It is transformed to 6 groups with alternating current 220V and exchanges 28V, 2 groups and exchange 12V and deliver to control circuit board S3 in the Ground Control case.RS-232-＞RS-485 module S6 is for to play the protocol conversion effect between the RS-232 of RS-485 communication modes and computer communication modes.Its protocol conversion is finished the user transparent fully automatically.Play the output signal control action between the control circuit board S5 of digital quantity output module S3 in single-chip microcomputer S1 internal control software and Ground Control case.Realize the control of light current through control circuit board S5 to forceful electric power.Play the pulse count signal effect between the control circuit board of counter module S4 in computer-internal control software and Ground Control case.Downhole parameters such as the flow that downhole measurement adjusting instrument is measured in real time, temperature, pressure all exist with the pulse signal that quantizes, and they are to be sent in the ground control system with the corresponding certain flow of a certain amount of pulse signal.This module is counted the pulse signal that quantizes, get final product down-hole flow, temperature, the pressure and other parameters value measured in real time.Fig. 5, Fig. 6 are the control circuit board electrical schematic diagram in the ground control system that is applied among the present invention, wherein in three rectification units 6 rectifier bridge heaps are arranged, the DC voltage of ac voltage rectifier with the power transformer input for pulsing, again through the big capacity electrochemical capacitor filtering of rear end, be transformed to level and smooth DC voltage, this voltage is output as direct current 30V voltage under the effect of integrated regulator.Voltage among the figure between ' D ', ' E ' is 30V, and the voltage between ' E ', ' F ' is 30V, and the voltage between ' F ', ' CK ' is 30V.T4-T6 is outside adjustable integrated regulator, and ' P1 ', ' P2 ', ' P3 ' are the external adjustable resistances of each adjustable regulator block among the figure.Change adjustable resistance, ' 3 ' end output voltage 0～30V of T4, T5, T6.RL5-RL7 is a voltage selection relay, and by ' CH8-7 ', ' CH8-8 ' end input low level effective control signal, the voltage that each end is different inserts in the supercircuit.' D ', ' E ', ' F ', ' CK ' form voltage overlaying circuit among the figure.K1-K3 is a voltage-selected switch, by selecting various voltages such as the exportable 0～30V of Ground Control case, 30V～60V, 60V～90V, 90V～120V.' K1 ' selects output ' METER ' to be the motor power supply, and ' K2 ' selects output ' FLOW ' to be the flow meter power supply, and ' K3 ' selects output ' PRESS ' to be the pressure gauge power supply.RL3, RL4 are the output voltage selective relay, by ' CH8-7 ', ' CH8-8 ' end input low level effective control signal, select output ' METER ', ' FLOW ' or ' PRESS ' voltage.RL2 is the output negative-phase relay, and by ' CH8-8 ' end input low level effective control signal, output voltage is reverse.Downhole measurement adjusting instrument is regulated flow and has partly been adopted direct current generator, regulates the flow size, corresponding to the rotating of direct current generator.RL1 is the output voltage control relay, by ' CH8-4 ' end input low level effective control signal, whether controls output voltage.B7, B8 are the rectifier bridge heap, and the DC voltage of ac voltage rectifier for pulsing with the power transformer input again through the big capacity electrochemical capacitor filtering of rear end, is transformed to level and smooth DC voltage.This DC voltage comprises integrated circuit, relay etc. as control circuit board upper control line road power supply.CH2-5 termination downhole measurement adjusting instrument upload signal, adopt the capacitive coupling acquired signal, integrated circuit U1 is that operational amplifier is delivered to the positive input that integrated circuit U2 is a comparator for 10 times with the input signal amplification, and the reverse input end of integrated circuit U2 comparator connects the DC voltage that is proportional to the input signal amplitude simultaneously.Integrated circuit U2 comparator plays the signal shaping effect, and the signal of output meets counting module S4.
The control instruction of being sent by ground control system is passed to flow metering and adjusting apparatus by cable, drives the motor rotation of its control and regulation bar, and then the up-down adjustment bar on the flow metering and adjusting apparatus is rotated, and changes the size of the adjustable water nozzle of blanking plug, realizes the adjustment of flow.
After this, flow metering and adjusting apparatus is carried from the interval of measuring, having debugged, the ejection jack of measurement and adjustment instrument is regained, be about to measurement and adjustment instrument and from adjustable blanking plug, eject, enter next interval and test by instruction; Then successively test is regulated, until reaching the water yield that geology injection allocation scheme requires.
In the technical program, specify as follows to the operation of measurement and adjustment instrument:
At first in oil pipe measurement and adjustment instrument is flicked, at this moment, ground instrument is oppositely powered, and motor just changes, until opening.
After then measurement and adjustment instrument being set, measurement and adjustment instrument begins to carry out Flow-rate adjustment, and at this moment ground instrument is oppositely powered, and motor just changes, and regulates flow.
After Flow-rate adjustment finished, measurement and adjustment instrument was packed up, and instrument is packed up and must be carried out in oil pipe, at this moment instrument forward power supply, position sensor control motor counter-rotating line work, after instrument was packed up, position sensor can be controlled supply line and automatically switch to the measurement circuitry duty.
Instrument temperature is measured: after instrument sets, and the power supply of instrument forward, position sensor control instrument line work is at the measurement state, and ground instrument is sent out temperature measurement signal, after downhole instrument receives signal, opens the temperature survey passage, begins to measure flow.
The instrument pressure measxurement: after instrument sets, the power supply of instrument forward, position sensor control instrument line work is at the measurement state, and ground instrument is sent out pressure measurement signal, after downhole instrument receives signal, opens the pressure measxurement passage, the beginning gaging pressure.
The instrument flow measurement: after instrument sets, the power supply of instrument forward, position sensor control instrument line work is at the measurement state, and ground instrument is sent out flow measurement signal, after downhole instrument receives signal, opens the flow measurement passage, begins to measure flow.
Take the technical program, when carrying out separated-zone water infection oil field, can detect the seperated layer water injection amount in real time by electromagnetic flowmeter, and measuring-signal is transferred to ground control system by cable, after comparing with the desired numerical value of geology injection allocation scheme, the output control signal, this control signal control dc motor rotation, and then the opening degree of valve in the adjustable blanking plug under the control well, promptly realized the dynamic adjustment of seperated layer water injection amount, shortened between the survey timing, improved to survey and transferred efficient, reduced the test operation working strength of workers; In addition, utilize the technical program, need not adopt diminishing method to calculate zonal flow rate again, reduced measure error, improved the qualification rate and the accuracy rate of data.
Claims (1)
1, a kind of flux of separated-zone water infection oil field test and method of adjustment is characterized in that:
(1) adjustable blanking plug is put in the inclined to one side hole of the eccentric injection mandrel that has two bridge-type through holes on the main body;
(2) utilize the cable on the winch that flow metering and adjusting apparatus is transferred, dock with the adjustable blanking plug of flow in the inclined to one side hole of eccentric injection mandrel;
(3) electromagnetic flowmeter in the flow metering and adjusting apparatus is uploaded to ground control system with measurement result by control cables after recording actual flow;
(4) ground control system compares the measuring-signal that receives and the setting water injection rate signal of this layer, if do not conform to, then sends the control instruction of adjusting water injection rate;
(5) control instruction of being sent by ground control system is passed to flow metering and adjusting apparatus by cable, drive the motor rotation of its control and regulation bar, and then the up-down adjustment bar of the adjustable blanking plug of flow is rotated, and change the openings of sizes of the adjustable water nozzle of the adjustable blanking plug of flow, realize the adjustment of flow;
(6) flow metering and adjusting apparatus is carried from the interval of measuring, having debugged after, send instruction by ground control system the ejection jack of measurement and adjustment instrument regained, measurement and adjustment instrument is ejected from the adjustable blanking plug of flow, enter next interval and test;
(7) successively test is regulated, until reaching the water yield that geology injection allocation scheme requires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200410081195 CN1601053A (en) | 2004-10-12 | 2004-10-12 | Method for measuring and adjusting flux of separated-zone water infection oil field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410081195 CN1601053A (en) | 2004-10-12 | 2004-10-12 | Method for measuring and adjusting flux of separated-zone water infection oil field |
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| CN1601053A true CN1601053A (en) | 2005-03-30 |
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| CN101787873A (en) * | 2010-03-24 | 2010-07-28 | 大庆油田有限责任公司 | Intelligent injection allocation process 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 |
| CN101457639B (en) * | 2008-12-31 | 2011-12-28 | 大庆油田有限责任公司 | Method for measuring and adjusting oilfield injection well by utilizing indication curve |
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- 2004-10-12 CN CN 200410081195 patent/CN1601053A/en active Pending
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| CN101555788B (en) * | 2008-04-09 | 2013-08-14 | 吴凤祥 | Double-detection probe measuring and adjusting instrument and detection method thereof |
| 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 |
| CN101457639B (en) * | 2008-12-31 | 2011-12-28 | 大庆油田有限责任公司 | Method for measuring and adjusting oilfield injection well by utilizing indication curve |
| CN101672179B (en) * | 2009-08-05 | 2013-12-11 | 阜新驰宇石油机械有限公司 | Intelligent synchronous testing and adjusting method capable of simultaneously infusing, testing and regulating |
| CN101649733B (en) * | 2009-09-04 | 2012-09-19 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Concentric type integrated test modification water injection technology and device |
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