CN103195399A - Single-pressure double-valve electrical-control joint exploitation pipe column and controlling method - Google Patents
Single-pressure double-valve electrical-control joint exploitation pipe column and controlling method Download PDFInfo
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- CN103195399A CN103195399A CN2013101119314A CN201310111931A CN103195399A CN 103195399 A CN103195399 A CN 103195399A CN 2013101119314 A CN2013101119314 A CN 2013101119314A CN 201310111931 A CN201310111931 A CN 201310111931A CN 103195399 A CN103195399 A CN 103195399A
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Abstract
The invention relates to a single-pressure double-valve electrical-control joint exploitation pipe column and a controlling method which are both adopted for two overlapping area oil layers with large physical property difference and span in a single-pump joint exploitation well in the field of oil production oil fields. The pipe column comprises a ground control system, a transmission cable and a downhole control system. The downhole control system comprises a pressure transmitting oil pump, a cable passing tubing anchor, a first control valve, a cable passing packer and a second control valve which are all connected in sequence. The first control valve and the second control valve are connected with the ground control system through the transmission cable. The controlling method of the single-pressure double-valve electrical-control joint exploitation pipe column mainly comprises the steps of sending out instructions to the downhole control system through the ground control system, adjusting opening of the first control valve, controlling inflow amount of liquid of an upper layer entering an oil pipe so as to reduce liquid inflow pressure of the upper layer and reduce interlayer disturbance to a lower layer caused by the liquid inflow pressure, fully amplifying production differential pressure, adjusting parameters of pressure of each layer and yields and the like in real time through the ground control system, finding a pressure balance point, and achieving the goal of joint exploitation continuous stable production of two oil layers.
Description
Technical field
The present invention relates to recover the oil in the field, oil field, in single pump commingled producing well for superimposed district two cover physical property differences and span all bigger oil reservoir adopt singly press automatically controlled the closing of bivalve to adopt tubing string and regulate and control method.
Background technology
To the bigger oil commingling of two cover physical difference and spans the time, in the prior art, the one, adopt single pump branch to take out tubing string, the utilization tubing string packing two cover oil reservoirs of giving up, pump is hung and is positioned at more than the circle, oil reservoir top, bottom, adopts the method realization flow string of pegging graft and the tubing string of giving up to unite two into one and realizes with taking out the form of adopting of closing; The 2nd, two feed liquor oil well pump for separated zone operation, utilize packer to separate upper and lower two cover oil reservoirs, solid connecting rod connects upper and lower two pump plungers, lower floor's production fluid is by subordinate's oil well pump pumping, the upper strata production fluid enters higher level's pump pump barrel through the sidewall valve, with give rise to well head after the lower floor production fluid mixes, realize the cover dynamical system form of simultaneous pumping system in proportion.Adopt two oil reservoirs if the application light pipe generally closes, because last stressor layer is big, lower floor's pressure is little, and two-layer span is big, and last stressor layer adds that two interlayer liquid column hydrostatic pressures will cause serious interlayer interference to lower floor, makes lower floor " be killed " not fluid; If singly adopt lower floor again because its pressure is low, the production fluid amount descends comparatively fast, can not produce continuously, bring big difficulty for producing management maintenance, thereby increase cost of production, and can not divide control in real time, can not measure hierarchical production and water content each layer production fluid, lower floor since packer lower floor is separated can't observed pressure.
Summary of the invention
In order to eliminate the interlayer interference of closing when adopting, and can monitor production fluid amount and pressure in real time, the invention provides and a kind ofly singly press automatically controlled the closing of bivalve to adopt tubing string and regulate and control method.Use this tubing string and can control each layer inlet hydraulic respectively, amplify lower floor's producing pressure differential, eliminate interlayer interference, can realize when adopting that automatically controlled closing each oil reservoir production fluid continuous controllable is adjustable, each stressor layer, output, moisturely can survey in real time.
Technical solution of the present invention: automatically controlled the closing of a kind of single pressure bivalve adopted tubing string, comprise ground control system, transmission cable and down-hole regulator control system, described down-hole regulator control system is pressure transmission oil well pump, mistake cable tubing anchor, controlling valve one, cable-passing packer and the controlling valve two that connects successively; Controlling valve one and controlling valve two are connected with ground control system by transmission cable.
As preferably, above-mentioned controlling valve two comprises valve body and valve regulator control system, described valve body comprises circuit board guard shield, motor shroud and valve pocket, described circuit board guard shield is connected with described valve pocket, have the axial passageway bridge that communicates and side inlet opening radially on the sidewall of valve pocket, described side inlet opening is built-in with sensor and sensor back of the body cap, and the upper end of passageway bridge communicates with oil pipe; Fixed electrical machinery guard shield, valve seat and connected valve seat back of the body cap in the centre bore of described valve pocket, described motor shroud is built-in with reducing motor, screw-nut body and the spool that connects successively, and the lower end of spool cooperates with the endoporus of valve seat; The lower end of described controlling valve two upper valve sleeves is embedded with the cable connecting arrangement that is connected with cable; Described valve regulator control system places in the above-mentioned circuit board guard shield, is connected with reducing motor in the motor shroud by motor drive module LM298, is electrically connected with above-mentioned ground control system through transmission cable by the MAX485 chip interface.
Above-mentioned single automatically controlled regulate and control method of adopting tubing string that closes of bivalve of pressing may further comprise the steps:
The first step: close adopt tubing string and go into the well after, close controlling valve one earlier, regulate controlling valve two apertures 100%, output, moisture and pressure when obtaining lower floor and singly adopting, controlling valve one aperture 100% is regulated in the back, closes controlling valve two, output, moisture and pressure when obtaining the upper strata and singly adopting;
Second step: again controlling valve one is controlled to less aperture, aperture determines that according to pressure and the production fluid amount of the aboveground layer of difference controlling valve two apertures are 100%, and ground is monitored upper strata output, moisture, zonal pressure in real time;
The 3rd step: the pressure the when lower floor that obtains according to the zonal pressure of real-time monitoring and the first step singly adopts, analyze the pressure disturbances situation of two interlayers, regulate controlling valve one aperture, if adjusting to close, each controlling valve adopts moment pressure when going up stressor layer and being higher than it and singly adopting, illustrate that lower floor produces interference to the upper strata, amplifies aperture; Adopt pressure when lower floor's pressure was higher than it and singly adopted moment if each controlling valve is adjusted to close, illustrate that the upper strata produces interference to lower floor, reduce aperture, find two-layer pressure balance point, reach no interlayer interference and close and adopt;
The 4th step: last stressor layer constantly rises when adopting owing to close, lower floor's pressure constantly descends, and changes the aperture of regulating controlling valve one in real time according to it, and stressor layer drops in the time of can't regulating and control instantly, when being the aperture 1% of controlling valve 1 two stressor layers approach or lower floor's pressure a little more than last stressor layer, close controlling valve two, the aperture of regulating controlling valve one is 100%, singly adopts the upper strata, stressor layer in the reduction, recover lower floor's pressure, when pressure returned to normal value, the repetition first step begins to close adopted.
Beneficial effect of the present invention: in the such scheme, under the monitoring of ground control system, two valve regulator control systems under the control well in the regulator control system, control each oil reservoir inlet hydraulic by the aperture of adjusting two controlling valves respectively, can regulate layering controlling valve aperture in real time with each stressor layer variation, amplify lower floor's producing pressure differential, realize that two oil reservoir production fluid continuous controllable are adjustable, find the pressure balance point, and in time eliminate interlayer interference, realize the effective lifting of bottom oil reservoir production fluid, can survey parameters such as each stressor layer, output in real time.
Description of drawings
Fig. 1 adopts each member connection diagram in the tubing string for of the present invention closing;
Fig. 2 is the structural representation of controlling valve two among Fig. 1;
Fig. 3 is valve regulator control system and ground control system module connection diagram.
1-circuit board guard shield among the figure, 2-motor shroud, 3-spool, 4-valve pocket, 5-sensor back of the body cap, 6-pressure sensor, 7-Jiao Dun, 8-seal pressure cap, the 9-steel ball, 10-depression bar screw, 11-valve seat back of the body cap, 12-valve seat, the 13-passageway bridge, 14-side inlet opening, 15-liquid pass hole, 16-air equalizer opening, the 17-ground control system, the 18-transmission cable, 19-pressure transmission oil well pump, 20-crosses the cable tubing anchor, 21-controlling valve one, 22-cable-passing packer, 23-controlling valve two.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
Extremely shown in Figure 3 by Fig. 1, this list presses automatically controlled the closing of bivalve to adopt tubing string and comprise ground control system 17, transmission cable 18 and down-hole regulator control system, described down-hole regulator control system for the pressure transmission oil well pump 19 that is threaded successively, cross cable tubing anchor 20, controlling valve 1, cable-passing packer 22 and controlling valve 2 23; Above-mentioned controlling valve 1 and controlling valve 2 23 are connected with ground control system 17 by transmission cable 18.
In the down-hole, cable-passing packer 22 is stuck in circle, oil reservoir top, bottom, top connects controlling valve 1, the bottom connects controlling valve 2 22, wherein controlling valve 1 is single side feed liquor controlling valve of pressing, controlling valve 2 22 is for singly depressing the feed liquor controlling valve, and the top of controlling valve 1 connected cable tubing anchor 20 and pressure transmission oil well pump 19 successively.
Above-mentioned transmission cable 18 is four-core steel pipe cable, passes tubing anchor and is connected with controlling valve 1, pass packer and be connected with controlling valve 2 23, but the cable transmission altogether of power supply and signal, as shown in Figure 1.
Above-mentioned controlling valve 1 is called for the name of applying for 2011.12.19 day: the concentric integral type continuous and quantitative of porous production mandrel, and application number 201120532854.6, notice of authorization number: CN202348248U, notice of authorization day is 2012.07.25.
As preferably, above-mentioned controlling valve 2 23 is for singly depressing the feed liquor controlling valve, comprise valve body and valve regulator control system, described valve body comprises circuit board guard shield 1, motor shroud 2 and valve pocket 4, described circuit board guard shield 1 is threaded with described valve pocket 4, have axial passageway bridge 13 and side inlet opening 14 radially on the sidewall of valve pocket 4, described side inlet opening 14 is built-in with sensor 6 and sensor back of the body cap 5, axially passageway bridge 13 communicates with radially side inlet opening 14, and the upper end of passageway bridge 13 communicates with oil pipe; The centre bore internal thread fixed electrical machinery guard shield 2 of described valve pocket 4, the valve seat 12 that has through hole and connected valve seat back of the body cap 11, described motor shroud 2 is built-in with reducing motor, screw-nut body and spool 3, reducing motor, screw-nut body and spool 3 connect successively, the lower end of spool 3 can cooperate with the endoporus of valve seat 12, close or open the liquid pass hole 15 on the valve pocket 4, in addition, also have air equalizer opening 16 on the spool 3; Described down-hole regulator control system places in the above-mentioned circuit board guard shield 1, is connected by the reducing motor in motor drive module LM298 and the motor shroud 2, is electrically connected with described ground control system by the MAX485 chip interface; The lower end of described valve pocket 4 is embedded with cable connecting arrangement, by glue pier 7, seal pressure cap 8, steel ball 9, depression bar screw 10 is formed, be used for stube cable, in the areole that shown seal pressure cap 8 embedding valve pockets 4 are held below, the inner of seal pressure cap 8 embeds glue pier 7, the outer end embeds depression bar screw 10,10 on seal pressure cap 8 endoporus and depression bar screw are equipped with steel ball, penetrate transmission cable 18 in the centre bore of depression bar screw 10, and the concrete structure of above-mentioned controlling valve 2 23 as shown in Figure 2; Described valve regulator control system places in the above-mentioned circuit board guard shield 1, is connected by the reducing motor in motor drive module LM298 and the motor shroud 2, is electrically connected with above-mentioned ground control system 17 through transmission cable 18 by the MAX485 chip interface.
This controlling valve two adopts down the feed liquor mode because of it, inlet can be added and be deep to the lower floor middle part, solving lower floor's producing fluid level descends fast, the problem of not enough suction, but and real-time continuous monitoring lower floor pressure, when lower floor's pressure descends not enough suction soon, can close controlling valve and recover this stressor layer, by the sensor in the side inlet opening, can ask for the every dynamic parameter in upper strata simultaneously.
The concrete regulation process of controlling valve two is as follows: in the chip STC12C5410AD of the valve regulator control system ground control system is transferred to regulating command by supervisory keyboard by the MAX485 interface in, the decoding back is to sending regulating command, drive the reducing motor rotating by motor drive module ML298, deceleration rear drive screw-nut body, push rod on the screw-nut body drives spool 3 actions, cooperate with the through hole of valve seat 12, close or open the inlet opening 15 of lower floor's feed pathway, realize that the continuous and quantitative of its aperture is regulated.The valve regulator control system judges by detecting the motor rotation blockage electric current whether valve is closed fully or opened: when valve is opened fully or fastened, motor generation stall, the electric current that flows through motor increases rapidly, surpassing testing circuit after a certain threshold value delivers to a high level in the chip STC12C5410AD in the valve regulator control system, system detects just thinks that valve closes fully or open behind this level, so reducing motor is closed, and control system report earthward.At this moment, the indicator lamp of corresponding each layer on off state will brighten on the display board that connects of ground control system and chip STC89C51RC.The pressure sensor 6 that is installed in side inlet opening 14 simultaneously can be monitored upper strata production fluid pressure in real time, and monitor signal is real-time transmitted to ground, reads by the display board playback, as shown in Figure 3.
Above-mentionedly single press automatically controlled the closing of bivalve to adopt tubing string and mainly be fit to two oil reservoir thing physical properties and differ greatly, interlayer pressure difference and span are bigger, and the high pressure high productivity layer is positioned at top, and lower floor is owing to grow two low cover series of strata of difference production fluid amount and divide control to close to adopt.Concrete regulate and control method may further comprise the steps:
The first step: close adopt tubing string and go into the well after, close controlling valve one earlier, regulate controlling valve two apertures 100%, output, moisture and pressure when obtaining lower floor and singly adopting, controlling valve one aperture 100% is regulated in the back, closes controlling valve two, output, moisture and pressure when obtaining the upper strata and singly adopting.
Second step: again controlling valve one is controlled to less aperture, aperture determines that according to pressure and the production fluid amount of the aboveground layer of difference controlling valve two apertures are 100%, and ground is monitored upper strata output, moisture, zonal pressure in real time.
The 3rd step: the pressure the when lower floor that obtains according to the zonal pressure of real-time monitoring and the first step singly adopts, analyze the pressure disturbances situation of two interlayers, regulate controlling valve one aperture, if adjusting to close, each controlling valve adopts moment pressure when going up stressor layer and being higher than it and singly adopting, illustrate that lower floor produces interference to the upper strata, amplifies aperture; Adopt pressure when lower floor's pressure was higher than it and singly adopted moment if each controlling valve is adjusted to close, illustrate that the upper strata produces interference to lower floor, reduce aperture, find two-layer pressure balance point, reach no interlayer interference and close and adopt.
The 4th step: last stressor layer constantly rises when adopting owing to close, lower floor's pressure constantly descends, and changes the aperture of regulating controlling valve one in real time according to it, and stressor layer drops in the time of can't regulating and control instantly, when being the aperture 1% of controlling valve 1 two stressor layers approach or lower floor's pressure a little more than last stressor layer, close controlling valve two, the aperture of regulating controlling valve one is 100%, singly adopts the upper strata, stressor layer in the reduction, recover lower floor's pressure, when pressure returned to normal value, the repetition first step begins to close adopted.
This automatically controlled controlling valve two of adopting in the tubing string that closes cooperates with controlling valve one, control each oil reservoir inlet hydraulic by the aperture of adjusting two controlling valves respectively, can regulate layering controlling valve aperture in real time with each stressor layer variation, amplify lower floor's producing pressure differential, adjust each stressor layer, output, parameter such as moisture in real time by ground monitoring system, and find the pressure balance point, and eliminate interlayer interference, realize the purpose of two oil commingling continuous and stable production.
Claims (3)
1. automatically controlled the closing of single pressure bivalve adopted tubing string, comprise ground control system (17), transmission cable (18) and down-hole regulator control system, it is characterized in that: pressure transmission oil well pump (19), mistake cable tubing anchor (20), controlling valve one (21), cable-passing packer (22) and the controlling valve two (23) of described down-hole regulator control system for connecting successively; Controlling valve one (21) and controlling valve two (23) are connected with ground control system (17) by transmission cable (18).
2. automatically controlled the closing of single pressure bivalve according to claim 1 adopted tubing string, it is characterized in that: above-mentioned controlling valve two (23) comprises valve body and valve regulator control system, described valve body comprises circuit board guard shield (1), motor shroud (2) and valve pocket (4), described circuit board guard shield (1) is connected with described valve pocket (4), have the axial passageway bridge (13) that communicates and side inlet opening (14) radially on the sidewall of valve pocket (4), described side inlet opening (14) is built-in with sensor (6) and sensor back of the body cap (5), and the upper end of passageway bridge (13) communicates with oil pipe; Fixed electrical machinery guard shield (2), valve seat (12) and connected valve seat back of the body cap (11) in the centre bore of described valve pocket (4), described motor shroud (2) is built-in with reducing motor, screw-nut body and the spool (3) that connects successively, and the lower end of spool (3) cooperates with the endoporus of valve seat (12); The lower end of described controlling valve two (23) upper valve sleeves (4) is embedded with the cable connecting arrangement that is connected with transmission cable; Described valve regulator control system places in the above-mentioned circuit board guard shield (1), be connected by the reducing motor in motor drive module LM298 and the motor shroud (2), be electrically connected with above-mentioned ground control system (17) through transmission cable (18) by the MAX485 chip interface.
3. the described list of claim 1 is pressed the automatically controlled regulate and control method of adopting tubing string that closes of bivalve, it is characterized in that may further comprise the steps:
The first step: close adopt tubing string and go into the well after, close controlling valve one earlier, regulate controlling valve two apertures 100%, output, moisture and pressure when acquisition lower floor singly adopts, controlling valve one aperture 100% is regulated in the back, closes controlling valve two, output, moisture and pressure parameter when singly adopt on the acquisition upper strata;
Second step: again controlling valve one is controlled to less aperture, aperture determines that according to pressure and the production fluid amount of the aboveground layer of difference controlling valve two apertures are 100%, and ground is monitored upper strata output, moisture, zonal pressure in real time;
The 3rd step: the pressure the when lower floor that obtains according to the zonal pressure of real-time monitoring and the first step singly adopts, analyze the pressure disturbances situation of two interlayers, regulate controlling valve one aperture, if adjusting to close, each controlling valve adopts moment pressure when going up stressor layer and being higher than it and singly adopting, illustrate that lower floor produces interference to the upper strata, amplifies aperture; Adopt pressure when lower floor's pressure was higher than it and singly adopted moment if each controlling valve is adjusted to close, illustrate that the upper strata produces interference to lower floor, reduce aperture, find two-layer pressure balance point, reach no interlayer interference and close and adopt;
The 4th step: last stressor layer constantly rises when adopting owing to close, lower floor's pressure constantly descends, and changes the aperture of regulating controlling valve one in real time according to it, and stressor layer drops in the time of can't regulating and control instantly, when being the aperture 1% of controlling valve 1 two stressor layers approach or lower floor's pressure a little more than last stressor layer, close controlling valve two, the aperture of regulating controlling valve one is 100%, singly adopts the upper strata, stressor layer in the reduction, recover lower floor's pressure, when pressure returned to normal value, the repetition first step begins to close adopted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310111931.4A CN103195399B (en) | 2013-04-02 | 2013-04-02 | Single pressure automatically controlled commingled column of bivalve and regulate and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310111931.4A CN103195399B (en) | 2013-04-02 | 2013-04-02 | Single pressure automatically controlled commingled column of bivalve and regulate and control method |
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| CN103195399A true CN103195399A (en) | 2013-07-10 |
| CN103195399B CN103195399B (en) | 2015-09-30 |
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| CN201310111931.4A Active CN103195399B (en) | 2013-04-02 | 2013-04-02 | Single pressure automatically controlled commingled column of bivalve and regulate and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968656A (en) * | 2017-04-11 | 2017-07-21 | 西南石油大学 | One kind, which builds the pressure, increases well yield method |
| CN109098698B (en) * | 2018-10-19 | 2020-12-04 | 中国地质大学（北京） | Blade type pressure self-adjusting coal bed gas collecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5896924A (en) * | 1997-03-06 | 1999-04-27 | Baker Hughes Incorporated | Computer controlled gas lift system |
| CN202047757U (en) * | 2011-03-31 | 2011-11-23 | 中国石油化工股份有限公司 | Layered sand prevention layered testing and layered oil extraction integrated pipe column |
| CN202157792U (en) * | 2011-06-17 | 2012-03-07 | 中国石油天然气股份有限公司 | Underground production allocation device for oil well |
| CN102536154A (en) * | 2012-02-23 | 2012-07-04 | 大庆新力科技开发有限公司 | Intelligent water-plugging production-increasing device for production well and control method thereof |
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2013
- 2013-04-02 CN CN201310111931.4A patent/CN103195399B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5896924A (en) * | 1997-03-06 | 1999-04-27 | Baker Hughes Incorporated | Computer controlled gas lift system |
| CN202047757U (en) * | 2011-03-31 | 2011-11-23 | 中国石油化工股份有限公司 | Layered sand prevention layered testing and layered oil extraction integrated pipe column |
| CN202157792U (en) * | 2011-06-17 | 2012-03-07 | 中国石油天然气股份有限公司 | Underground production allocation device for oil well |
| CN102536154A (en) * | 2012-02-23 | 2012-07-04 | 大庆新力科技开发有限公司 | Intelligent water-plugging production-increasing device for production well and control method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968656A (en) * | 2017-04-11 | 2017-07-21 | 西南石油大学 | One kind, which builds the pressure, increases well yield method |
| CN109098698B (en) * | 2018-10-19 | 2020-12-04 | 中国地质大学（北京） | Blade type pressure self-adjusting coal bed gas collecting device |
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| CN103195399B (en) | 2015-09-30 |
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Inventor after: Huang Boyuan Inventor after: Sun Xiaoming Inventor after: Hao Weidong Inventor after: Wang Zhixin Inventor after: Song Zhansheng Inventor before: Huang Youquan Inventor before: Sun Xiaoming Inventor before: Hao Weidong Inventor before: Wang Zhixin Inventor before: Song Zhansheng |
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Free format text: CORRECT: INVENTOR; FROM: HUANG YOUQUAN SUN XIAOMING HAO WEIDONG WANG ZHIXIN SONG ZHANSHENG TO: HUANG BOYUAN SUN XIAOMING HAO WEIDONG WANG ZHIXIN SONG ZHANSHENG |
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