CN103206197B - The automatically controlled commingled column of two pressure single valves and regulate and control method - Google Patents
The automatically controlled commingled column of two pressure single valves and regulate and control method Download PDFInfo
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- CN103206197B CN103206197B CN201310112196.9A CN201310112196A CN103206197B CN 103206197 B CN103206197 B CN 103206197B CN 201310112196 A CN201310112196 A CN 201310112196A CN 103206197 B CN103206197 B CN 103206197B
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Abstract
The present invention relates in oil recovery oilfield, the automatically controlled commingled column of two pressure single valves used and regulate and control method when oil reservoir list pump conjunction in down-hole two is adopted.The described automatically controlled commingled column of two pressure single valves, 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 and the cable-passing packer that connect successively; Described controlling valve is connected with ground control system by transmission cable; Its regulate and control method mainly sends instruction by ground regulator control system to two controlling valves of down-hole regulator control system, regulate the aperture of controlling valve, 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 monitoring system, and 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 automatically controlled commingled column of two pressure single valves 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
For having potentiality to be exploited, but two cover physical property differences and the larger oil reservoir of span, lower floor's developmental phase is to better, and Liquid output is relatively high, can continuous and stable production when singly adopting, but in order to save cost, generally adopts the form of closing and adopting.In prior art, one is adopt single pump to divide and take out tubing string, and utilize Back-off Pipe String packing two to overlap oil reservoir, pump is hung and is positioned at more than bottom oil layer top circle, and adopt the method for grafting to realize form that flow string and Back-off Pipe String unite two into one realizes taking out conjunction together and adopts; 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 two automatically controlled commingled column of pressure single valve 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: a kind of two automatically controlled commingled column of pressure single valve, 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 and the cable-passing packer that connect successively; Described controlling valve is connected with ground control system by transmission cable.
As preferably, above-mentioned controlling valve 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 external pressure transducer 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 described valve seat, the lower end sidewall of described valve pocket is embedded with the linkage of transmission cable and interior pressure sensor; 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 with described ground control system by MAX485 chip interface.
The regulate and control method of the above-mentioned pair of automatically controlled commingled column of pressure single valve comprises the following steps:
The first step: after commingled column is gone into the well, first closes controlling valve, and obtain output, moisture and pressure parameter when lower floor singly adopts, now external pressure sensor monitoring pressure is upper stressor layer, and pressure sensor monitoring pressure is lower floor's pressure;
Second step: again controlling valve is controlled to less aperture, aperture is determined according to the pressure of the aboveground layer of difference and Liquid output, ground Real-Time Monitoring output, moisture, external and internal pressure;
3rd step: external and internal pressure during the Dan Cai lower floor obtained according to the upper strata external and internal pressure of Real-Time Monitoring and the first step, analyze the pressure disturbances situation of two interlayers, regulate the aperture of controlling valve, control the external pressure on upper strata be greater than interior pressure and interior pressure is singly adopted close to lower floor time pressure, 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, the aperture of controlling valve is regulated in real time according to its change, when upper strata pressure increase is uncontrollable to controlling valve and controlling valve aperture 1%, pressure when interior pressure is still singly adopted higher than lower floor, all opens controlling valve, fully amplifies upper strata producing pressure differential, stressor layer in reduction, improve surface production parameter by ground control system, after upper strata pressure recover 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, valve regulator control system under control well in regulator control system, controls each oil reservoir inlet hydraulic by the aperture adjusting controlling valve, can regulate controlling valve aperture 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, each stressor layer, output, the parameter such as moisture can be surveyed in real time.Be arranged on two pressure sensors inside and outside controlling valve inlet and real-time continuous can monitor the external and internal pressure of this device.
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 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-external 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, pressure sensor in 13-, the axial passageway bridge of 14-, 15-liquid pass hole, 16-ground control system, 17-cable, 18-pressure transmission oil well pump, 19-crosses cable tubing anchor, 20-controlling valve, 21-cable-passing packer.
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, this pair of automatically controlled commingled column of pressure single valve, comprise ground control system 16, transmission cable 17 and down-hole regulator control system, described down-hole regulator control system is the pressure transmission oil well pump 18, excessively cable tubing anchor 19, controlling valve 20 and the cable-passing packer 21 that are threaded successively; Described controlling valve 20 is connected with ground control system 16 by transmission cable 17.
In down-hole, cable-passing packer 21 is stuck in bottom oil layer top circle, and top connects controlling valve 20, and controlling valve 20 is two pressure sides feed liquor controlling valves, and the top of controlling valve 20 connected cable tubing anchor 19 and pressure transmission oil well pump 18 successively.
Above-mentioned transmission cable 17 is four-core steel pipe type cable, is connected with controlling valve 20 through tubing anchor, can power supply and signal co-cable transmission, as shown in Figure 1.
As preferably
,above-mentioned controlling valve is that two pressure surveys feed liquor controlling valve, comprise valve body, ground control system 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 of axial passageway bridge 14 and radial direction on the sidewall of valve pocket 4, described side inlet opening is built-in with external pressure transducer 6 and sensor back of the body cap 5, axial passageway bridge communicates with radial side inlet opening, and the upper end of axial passageway bridge 14 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, close or open the liquid pass hole 15 on valve pocket 4; The lower end sidewall of described valve pocket 4 is embedded with cable connecting arrangement and interior pressure sensor 13; Described cable connecting arrangement is by glue pier 7, seal pressure cap 8, steel ball 9, depression bar screw 10 forms, for stube cable, on the seal pressure cap 8 that shows embed in the areole of valve pocket 4 lower surface, the inner of seal pressure cap 8 embeds glue pier 7, and outer end embeds depression bar screw 10, is equipped with steel ball between seal pressure cap 8 endoporus and depression bar screw 10, penetrate transmission cable 17 in the centre bore of depression bar screw 10, the concrete structure of above-mentioned controlling valve is as shown in Fig. 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 17 by MAX485 chip interface with described ground control system 16.
This controlling valve is arranged on the top of cable packer, sends instruction by ground control system to the valve regulator control system of down-hole control valve, regulates continuously, realize controlling upper strata liquid inlet volume to regulation and control valve opening; Bottom need be connected with cable-passing packer, and therefore lower floor's feed liquor mode is side feed liquor.Be arranged on the interior pressure sensor 13 of inlet and external pressure transducer 6 and real-time continuous can monitor the levels pressure of this device, when controlling valve is opened, external monitoring pressure is upper stream pressure, and internal monitoring pressure is stream pressure in pipe; When controlling valve is closed, external monitoring pressure is upper strata static pressure, and internal monitoring pressure is underflow pressure.
The concrete regulation process of this controlling valve is as follows: regulating command is transferred to by MAX485 interface in the chip STC12C5410AD of the valve regulator control system in the regulator control system of down-hole by supervisory keyboard by ground control system, regulating command is sent after decoding, reducing motor rotating is driven by motor drive module LM298, 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, the liquid pass hole 15 of closing or opening on valve pocket, 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 the regulator control system of down-hole 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 gauge be arranged on inside and outside inlet real-time continuous can monitor this device external and internal pressure, and when controlling valve is opened, external monitoring pressure is upper stream pressure, and internal monitoring pressure is stream pressure in pipe; When controlling valve is closed, external monitoring pressure is upper strata static pressure, and internal monitoring pressure is underflow pressure, and monitor signal is real-time transmitted to ground, is read, as shown in Figure 3 by display board playback.
The described automatically controlled commingled column of two pressure single valves is by above-mentioned controlling valve, upper strata can be controlled and enter pump pressure, amplify lower oil reservoir producing pressure differential, play lower floor's production capacity, solve the problem of two cover heterogeneitys, large span oil reservoir interlayer interference, abundant excavation top oil reservoir potential, realizes the effective lifting of automatically controlled conjunction producing horizon production fluid and the monitoring of dynamic parameter real-time continuous.Concrete regulate and control method is as follows:
The first step: after commingled column is gone into the well, first closes controlling valve, and obtain output, moisture and pressure parameter when lower floor singly adopts, now external pressure sensor monitoring pressure is upper stressor layer, and pressure sensor monitoring pressure is lower floor's pressure;
Second step: again controlling valve is controlled to less aperture, aperture is determined according to the pressure of the aboveground layer of difference and Liquid output, ground Real-Time Monitoring output, moisture, external and internal pressure;
3rd step: external and internal pressure during the Dan Cai lower floor obtained according to the upper strata external and internal pressure of Real-Time Monitoring and the first step, analyze the pressure disturbances situation of two interlayers, regulate the aperture of controlling valve, control the external pressure on upper strata be greater than interior pressure and interior pressure is singly adopted close to lower floor time pressure, 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, the aperture of controlling valve is regulated in real time according to its change, when upper strata pressure increase is uncontrollable to controlling valve and controlling valve aperture 1%, pressure when interior pressure is still singly adopted higher than lower floor, all opens controlling valve, fully amplifies upper strata producing pressure differential, stressor layer in reduction, improve surface production parameter by ground control system, after upper strata pressure recover to normal value, the repetition first step starts conjunction and adopts.
By regulating the aperture of controlling valve in this automatically controlled commingled column, 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, the producing pressure differential of abundant amplification lower floor, is adjusted the parameters such as each stressor layer, output in real time, and finds pressure balance point by ground monitoring system, eliminate interlayer interference, realize the object of two oil commingling continuous and stable production.
Claims (2)
1. two automatically controlled commingled column of pressure single valve, comprise ground control system (16), transmission cable (17) and down-hole regulator control system, it is characterized in that: described down-hole regulator control system is the pressure transmission oil well pump (18), excessively cable tubing anchor (19), controlling valve (20) and the cable-passing packer (21) that connect successively; Described controlling valve (20) is connected with ground control system (16) by transmission cable (17);
Above-mentioned controlling valve (20) 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 of the axial passageway bridge (14) communicated and radial direction on the sidewall of valve pocket (4), described side inlet opening is built-in with external pressure transducer (6) and sensor back of the body cap (5), and the upper end of axial passageway bridge (14) 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 described valve seat (12); The lower end sidewall of described valve pocket (4) is embedded with linkage and the interior pressure sensor (13) of transmission cable (17); Described valve regulator control system is placed in above-mentioned circuit board covers (1), is connected, is electrically connected by MAX485 chip interface with described ground control system by motor drive module LM298 with the reducing motor in motor shroud (2).
2. the regulate and control method of the according to claim 1 pair of automatically controlled commingled column of pressure single valve, is characterized in that comprising the following steps:
The first step: after commingled column is gone into the well, first closes controlling valve, and obtain output, moisture and pressure parameter when lower floor singly adopts, now external pressure sensor monitoring pressure is upper stressor layer, and pressure sensor monitoring pressure is lower floor's pressure;
Second step: again controlling valve is controlled to less aperture, aperture is determined according to the pressure of the aboveground layer of difference and Liquid output, ground Real-Time Monitoring output, moisture, external and internal pressure;
3rd step: external and internal pressure during the Dan Cai lower floor obtained according to the upper strata external and internal pressure of Real-Time Monitoring and the first step, analyze the pressure disturbances situation of two interlayers, regulate the aperture of controlling valve, control the external pressure on upper strata be greater than interior pressure and interior pressure is singly adopted close to lower floor time pressure, 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, the aperture of controlling valve is regulated in real time according to its change, when upper strata pressure increase is uncontrollable to controlling valve and controlling valve aperture 1%, pressure when interior pressure is still singly adopted higher than lower floor, all opens controlling valve, fully amplifies upper strata producing pressure differential, stressor layer in reduction, improve surface production parameter by ground control system, after upper strata pressure recover to normal value, the repetition first step starts conjunction and adopts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310112196.9A CN103206197B (en) | 2013-04-02 | 2013-04-02 | The automatically controlled commingled column of two pressure single valves and regulate and control method |
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| CN201310112196.9A CN103206197B (en) | 2013-04-02 | 2013-04-02 | The automatically controlled commingled column of two pressure single valves and regulate and control method |
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| CN103206197B true CN103206197B (en) | 2015-09-09 |
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| CN104343405A (en) * | 2013-07-29 | 2015-02-11 | 中国石油天然气股份有限公司 | Circuit repeated releasing and butting process in oilfield underground |
| CN104929592B (en) * | 2015-05-29 | 2017-06-16 | 大庆油田有限责任公司 | Horizontal well looks for the device and its application method of water blockoff and formation pressure monitoring |
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| CN201991505U (en) * | 2011-04-06 | 2011-09-28 | 大庆华油石油科技开发有限公司 | Underground controllable electric regulator |
| CN102828736A (en) * | 2012-09-18 | 2012-12-19 | 中国海洋石油总公司 | Real-time adjustable and controllable hanging type underground oil and water separating system |
| CN102979487A (en) * | 2012-11-26 | 2013-03-20 | 中国石油天然气股份有限公司 | Water control process for preset cable of horizontal well |
| CN202810767U (en) * | 2012-08-22 | 2013-03-20 | 吴庆民 | Layering release combination packer device |
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2013
- 2013-04-02 CN CN201310112196.9A patent/CN103206197B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270647A (en) * | 2008-04-24 | 2008-09-24 | 中国海洋石油总公司 | Injection allocation volume automatic regulation method for marine oil-field water injection well |
| CN201991505U (en) * | 2011-04-06 | 2011-09-28 | 大庆华油石油科技开发有限公司 | Underground controllable electric regulator |
| CN202810767U (en) * | 2012-08-22 | 2013-03-20 | 吴庆民 | Layering release combination packer device |
| CN102828736A (en) * | 2012-09-18 | 2012-12-19 | 中国海洋石油总公司 | Real-time adjustable and controllable hanging type underground oil and water separating system |
| CN102979487A (en) * | 2012-11-26 | 2013-03-20 | 中国石油天然气股份有限公司 | Water control process for preset cable of horizontal well |
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