CN103195399B - Single pressure automatically controlled commingled column of bivalve and regulate and control method - Google Patents
Single pressure automatically controlled commingled column of bivalve and regulate and control method Download PDFInfo
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- CN103195399B CN103195399B CN201310111931.4A CN201310111931A CN103195399B CN 103195399 B CN103195399 B CN 103195399B CN 201310111931 A CN201310111931 A CN 201310111931A CN 103195399 B CN103195399 B CN 103195399B
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Abstract
The present invention relates in oil recovery oilfield, in single pump commingled producing well, the list pressure automatically controlled commingled column of bivalve and regulate and control method that physical property difference and all larger oil reservoir of span adopt is overlapped for superimposed district two.This tubing string comprises ground control system, transmission cable and down-hole regulator control system, and described down-hole regulator control system is the pressure transmission oil well pump, excessively cable tubing anchor, controlling valve one, cable-passing packer and the controlling valve two that connect successively; Controlling valve one and controlling valve two are connected with ground control system by transmission cable; Its regulate and control method sends instruction mainly through ground control system to down-hole regulator control system, regulate the aperture of controlling valve one, control upper strata enters the liquid inlet volume in oil pipe, thus reduce the inlet hydraulic on upper strata, to reduce its interlayer interference to lower floor, fully amplify the producing pressure differential of lower floor, and adjust the parameters such as each stressor layer, output in real time by ground control system, find pressure balance point, realize the object of two oil commingling continuous and stable production.
Description
Technical field
The present invention relates in oil recovery oilfield, in single pump commingled producing well, the list pressure automatically controlled commingled column of bivalve and regulate and control method that physical property difference and all larger oil reservoir of span adopt is overlapped for superimposed district two.
Background technology
When to two cover physical difference and span larger oil commingling, in prior art, one is adopt single pump to divide to take out tubing string, Back-off Pipe String packing two is utilized to overlap oil reservoir, pump is hung and is positioned at more than bottom oil layer top circle, adopts the method for grafting to realize flow string and unites two into one with Back-off Pipe String and realize taking out the form of closing and adopting together; Two is two fluid dual pumping pumps, packer is utilized 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, upper strata production fluid enters higher level's pump pump barrel through sidewall valve, give rise to well head after mixing with lower floor production fluid, realize the form of a set of dynamical system simultaneous pumping system in proportion.If application light pipe generally closes adopt two oil reservoirs, because upper stressor layer is large, lower floor's pressure is little, and two-layer span is large, and upper 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 Dan Cai lower floor is very fast because its pressure is low, Liquid output declines again, can not continuous seepage, larger difficulty is brought for producing management maintenance, thus increase cost of production, and can not to the real-time sub-control of each layer production fluid, can not metering layered output and water content, lower floor due to lower floor separates by packer cannot observed pressure.
Summary of the invention
In order to eliminate the interlayer interference of closing when adopting, and energy Real-Time Monitoring Liquid output and pressure, the invention provides a kind of single pressure automatically controlled commingled column of bivalve and regulate and control method.Apply this tubing string and can control each layer inlet hydraulic respectively, amplify lower floor producing pressure differential, eliminate interlayer interference, each oil reservoir production fluid can be realized when automatically controlled conjunction is adopted controllable continuously, each stressor layer, output, moisturely can to survey in real time.
Technical solution of the present invention: the automatically controlled commingled column of a kind of single pressure bivalve, comprise ground control system, transmission cable and down-hole regulator control system, described down-hole regulator control system is the pressure transmission oil well pump, excessively cable tubing anchor, controlling valve one, cable-passing packer and the controlling valve two that connect 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 covers, motor shroud and valve pocket, described circuit board covers is connected with described valve pocket, with the side inlet opening of the axial passageway bridge communicated and radial direction 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; The centre bore internal fixtion motor shroud of described valve pocket, valve seat and connected valve seat back of the body cap, described motor shroud is built-in with the reducing motor, screw-nut body and the spool that connect successively, the lower end of spool and the inner hole of valve seat; The lower end of described controlling valve two upper valve sleeve is embedded with the cable connecting arrangement be connected with cable; Described valve regulator control system is placed in above-mentioned circuit board covers, is connected with the reducing motor in motor shroud by motor drive module LM298, is electrically connected through transmission cable by MAX485 chip interface with above-mentioned ground control system.
The regulate and control method of the automatically controlled commingled column of above-mentioned single pressure bivalve comprises the following steps:
The first step: after commingled column is gone into the well, first closes controlling valve one, regulates controlling valve two aperture 100%, obtains output, moisture and pressure when lower floor singly adopts, rear adjustment controlling valve one aperture 100%, closes controlling valve two, obtains output, moisture and pressure when upper strata is singly adopted;
Second step: again controlling valve one is controlled to less aperture, aperture is determined according to the pressure of the aboveground layer of difference and Liquid output, and controlling valve two aperture is 100%, Real-Time Monitoring upper strata, ground output, moisture, zonal pressure;
3rd step: pressure when singly adopting according to the zonal pressure of Real-Time Monitoring and the lower floor of first step acquisition, analyze the pressure disturbances situation of two interlayers, regulate controlling valve one aperture, if each controlling valve is adjusted to conjunction and is adopted and go up pressure when stressor layer is singly adopted higher than it instantaneously, illustrate that lower floor produces interference to upper strata, amplify aperture; If each controlling valve adjusts to pressure when conjunction adopts that moment, lower floor pressure was singly adopted higher than it, illustrates that upper strata produces interference to lower floor, reduce aperture, find two-layer pressure balance point, reach and adopt without interlayer interference conjunction;
4th step: when adopting owing to closing, upper stressor layer constantly rises, lower floor's pressure constantly declines, and regulates in real time the aperture of controlling valve one according to its change, and stressor layer drops to when cannot regulate and control instantly, during the aperture 1% of i.e. controlling valve 1 two stressor layers close to or lower floor's pressure a little more than upper stressor layer, close controlling valve two, the aperture regulating controlling valve one is 100%, singly adopts upper strata, stressor layer in reduction, recover lower floor's pressure, when pressure recover is to normal value, the repetition first step starts conjunction and adopts.
Beneficial effect of the present invention: in such scheme, under the monitoring of ground control system, two valve regulator control systems under control well in regulator control system, each oil reservoir inlet hydraulic is controlled by the aperture adjusting two controlling valves respectively, layering controlling valve aperture can be regulated in real time with each stressor layer change, amplify lower floor's producing pressure differential, realize two oil reservoir production fluids controllable continuously, find pressure balance point, and eliminate interlayer interference in time, realize the effective lifting of bottom oil layer production fluid, the parameters such as each stressor layer, output can be surveyed in real time.
Accompanying drawing explanation
Fig. 1 is each component connection diagram in commingled column of the present invention;
Fig. 2 is the structural representation of controlling valve two in Fig. 1;
Fig. 3 is valve regulator control system and ground control system model calling schematic diagram.
1-circuit board covers in 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, 9-steel ball, 10-depression bar screw, 11-valve seat back of the body cap, 12-valve seat, 13-passageway bridge, 14-side inlet opening, 15-liquid pass hole, 16-air equalizer opening, 17-ground control system, 18-transmission cable, 19-pressure transmission oil well pump, 20-crosses cable tubing anchor, 21-controlling valve one, 22-cable-passing packer, 23-controlling valve two.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
By shown in Fig. 1 to Fig. 3, the automatically controlled commingled column of this list pressure bivalve comprises ground control system 17, transmission cable 18 and down-hole regulator control system, and described down-hole regulator control system is the pressure transmission oil well pump 19, excessively cable tubing anchor 20, controlling valve 1, cable-passing packer 22 and the controlling valve 2 23 that are threaded successively; Above-mentioned controlling valve 1 and controlling valve 2 23 are connected with ground control system 17 by transmission cable 18.
In down-hole, cable-passing packer 22 is stuck in bottom oil layer top circle, top connects controlling valve 1, bottom connects controlling valve 2 22, wherein controlling valve 1 is single pressure side feed liquor controlling valve, controlling valve 2 22 is single pressure 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 type cable, is connected, is connected through packer with controlling valve 2 23 through tubing anchor with controlling valve 1, can power supply and signal co-cable transmission, as shown in Figure 1.
Above-mentioned controlling valve 1 is called for the name that 2011.12.19 day applies for: porous concentric integral type continuous and quantitative production mandrel, application number 201120532854.6, Authorization Notice No.: CN202348248U, authorized announcement date is 2012.07.25.
As preferably, above-mentioned controlling valve 2 23 is single pressure feed liquor controlling valve, comprise valve body and valve regulator control system, described valve body comprises circuit board covers 1, motor shroud 2 and valve pocket 4, described circuit board covers 1 is threaded with described valve pocket 4, with the side inlet opening 14 of axial passageway bridge 13 and radial direction 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, axial passageway bridge 13 communicates with radial 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, with the valve seat 12 of 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 connects successively, the lower end of spool 3 can with the inner hole of valve seat 12, the liquid pass hole 15 of closing or opening on valve pocket 4, in addition, on spool 3 also with air equalizer opening 16; Described down-hole regulator control system is placed in above-mentioned circuit board covers 1, is connected with the reducing motor in motor shroud 2 by motor drive module LM298, is electrically connected with described ground control system by 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 forms, for stube cable, shown seal pressure cap 8 embeds in the areole that valve pocket 4 holds below, and the inner of seal pressure cap 8 embeds glue pier 7, outer end embeds depression bar screw 10, be equipped with steel ball between seal pressure cap 8 endoporus and depression bar screw 10, penetrate transmission cable 18 in the centre bore of depression bar screw 10, the concrete structure of above-mentioned controlling valve 2 23 as shown in Figure 2; Described valve regulator control system is placed in above-mentioned circuit board covers 1, is connected with the reducing motor in motor shroud 2 by motor drive module LM298, is electrically connected through transmission cable 18 by MAX485 chip interface with above-mentioned ground control system 17.
This controlling valve two adopts lower feed liquor mode because of it, inlet can be added is deep in the middle part of lower floor, solving lower floor's producing fluid level declines fast, the problem of inadequate suction, and real-time continuous can monitor lower floor's pressure, controlling valve can be closed when lower floor's pressure drop aspirates soon not and recover this stressor layer, simultaneously by the sensor in the inlet opening of side, the every dynamic parameter in upper strata can be asked for.
The concrete regulation process of controlling valve two is as follows: in the chip STC12C5410AD of the valve regulator control system during regulating command is transferred to by MAX485 interface by supervisory keyboard by ground control system, to sending regulating command after decoding, reducing motor rotating is driven by motor drive module ML298, deceleration rear drive screw-nut body, push rod band movable valve plug 3 action on screw-nut body, coordinate with the through hole of valve seat 12, close or open the inlet opening 15 of lower floor's feed pathway, the continuous and quantitative realizing its aperture regulates.By detecting motor rotation blockage electric current, valve regulator control system judges whether valve closes completely or open: when valve is opened completely or fastened, motor generation stall, the electric current flowing through motor increases rapidly, after exceeding a certain threshold value, a high level is delivered in the chip STC12C5410AD in valve regulator control system by testing circuit, just think after systems axiol-ogy to this level that valve has been closed completely or opened, so reducing motor is closed, and control system report earthward.At this moment, the indicator lamp of ground control system each layer on off state corresponding on the display board that chip STC89C51RC connects will brighten.The pressure sensor 6 being simultaneously arranged on side inlet opening 14 can Real-Time Monitoring upper strata production fluid pressure, and monitor signal is real-time transmitted to ground, is read, as shown in Figure 3 by display board playback.
The automatically controlled commingled column of above-mentioned single pressure bivalve is mainly applicable to two oil reservoir thing physical properties and differs greatly, and interlayer pressure difference and span are comparatively large, and high pressure high productivity layer is positioned at top, and lower floor closes adopt owing to growing two low cover series of strata sub-controls of poor Liquid output.Concrete regulate and control method comprises the following steps:
The first step: after commingled column is gone into the well, first closes controlling valve one, regulates controlling valve two aperture 100%, obtains output, moisture and pressure when lower floor singly adopts, rear adjustment controlling valve one aperture 100%, closes controlling valve two, obtains output, moisture and pressure when upper strata is singly adopted.
Second step: again controlling valve one is controlled to less aperture, aperture is determined according to the pressure of the aboveground layer of difference and Liquid output, and controlling valve two aperture is 100%, Real-Time Monitoring upper strata, ground output, moisture, zonal pressure.
3rd step: pressure when singly adopting according to the zonal pressure of Real-Time Monitoring and the lower floor of first step acquisition, analyze the pressure disturbances situation of two interlayers, regulate controlling valve one aperture, if each controlling valve is adjusted to conjunction and is adopted and go up pressure when stressor layer is singly adopted higher than it instantaneously, illustrate that lower floor produces interference to upper strata, amplify aperture; If each controlling valve adjusts to pressure when conjunction adopts that moment, lower floor pressure was singly adopted higher than it, illustrates that upper strata produces interference to lower floor, reduce aperture, find two-layer pressure balance point, reach and adopt without interlayer interference conjunction.
4th step: when adopting owing to closing, upper stressor layer constantly rises, lower floor's pressure constantly declines, and regulates in real time the aperture of controlling valve one according to its change, and stressor layer drops to when cannot regulate and control instantly, during the aperture 1% of i.e. controlling valve 1 two stressor layers close to or lower floor's pressure a little more than upper stressor layer, close controlling valve two, the aperture regulating controlling valve one is 100%, singly adopts upper strata, stressor layer in reduction, recover lower floor's pressure, when pressure recover is to normal value, the repetition first step starts conjunction and adopts.
Controlling valve two in this automatically controlled commingled column coordinates with controlling valve one, each oil reservoir inlet hydraulic is controlled by the aperture adjusting two controlling valves respectively, layering controlling valve aperture can be regulated in real time with each stressor layer change, amplify lower floor's producing pressure differential, each stressor layer, output, the parameter such as moisture is adjusted in real time by ground monitoring system, and find pressure balance point, eliminate interlayer interference, realize the object of two oil commingling continuous and stable production.
Claims (2)
1. the automatically controlled commingled column of single pressure bivalve, comprise ground control system (17), transmission cable (18) and down-hole regulator control system, it is characterized in that: described down-hole regulator control system is the pressure transmission oil well pump (19), excessively cable tubing anchor (20), controlling valve one (21), cable-passing packer (22) and the controlling valve two (23) that connect successively; Controlling valve one (21) and controlling valve two (23) are connected with ground control system (17) by transmission cable (18);
Above-mentioned controlling valve two (23) comprises valve body and valve regulator control system, described valve body comprises circuit board covers (1), motor shroud (2) and valve pocket (4), described circuit board covers (1) is connected with described valve pocket (4), with the side inlet opening (14) of the axial passageway bridge (13) communicated and radial direction 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; The centre bore internal fixtion motor shroud (2) of described valve pocket (4), valve seat (12) and connected valve seat back of the body cap (11), described motor shroud (2) is built-in with the reducing motor, screw-nut body and the spool (3) that connect successively, the lower end of spool (3) and the inner hole of valve seat (12); The lower end of described controlling valve two (23) upper valve sleeve (4) is embedded with the cable connecting arrangement be connected with transmission cable; Described valve regulator control system is placed in above-mentioned circuit board covers (1), be connected with the reducing motor in motor shroud (2) by motor drive module LM298, be electrically connected with above-mentioned ground control system (17) through transmission cable (18) by MAX485 chip interface.
2. the regulate and control method of the automatically controlled commingled column of single pressure bivalve according to claim 1, is characterized in that comprising the following steps:
The first step: after commingled column is gone into the well, first closes controlling valve one, regulates controlling valve two aperture 100%, obtain output, moisture and pressure when lower floor singly adopts, rear adjustment controlling valve one aperture 100%, closes controlling valve two, obtains output, moisture and pressure parameter when upper strata is singly adopted;
Second step: again controlling valve one is controlled to less aperture, aperture is determined according to the pressure of the aboveground layer of difference and Liquid output, and controlling valve two aperture is 100%, Real-Time Monitoring upper strata, ground output, moisture, zonal pressure;
3rd step: pressure when singly adopting according to the zonal pressure of Real-Time Monitoring and the lower floor of first step acquisition, analyze the pressure disturbances situation of two interlayers, regulate controlling valve one aperture, if each controlling valve is adjusted to conjunction and is adopted and go up pressure when stressor layer is singly adopted higher than it instantaneously, illustrate that lower floor produces interference to upper strata, amplify aperture; If each controlling valve adjusts to pressure when conjunction adopts that moment, lower floor pressure was singly adopted higher than it, illustrates that upper strata produces interference to lower floor, reduce aperture, find two-layer pressure balance point, reach and adopt without interlayer interference conjunction;
4th step: when adopting owing to closing, upper stressor layer constantly rises, lower floor's pressure constantly declines, and regulates in real time the aperture of controlling valve one according to its change, and stressor layer drops to when cannot regulate and control instantly, during the aperture 1% of i.e. controlling valve 1 two stressor layers close to or lower floor's pressure a little more than upper stressor layer, close controlling valve two, the aperture regulating controlling valve one is 100%, singly adopts upper strata, stressor layer in reduction, recover lower floor's pressure, when pressure recover is to normal value, the repetition first step starts conjunction and adopts.
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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 CN103195399A (en) | 2013-07-10 |
| CN103195399B true CN103195399B (en) | 2015-09-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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 |
-
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 |
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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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