CN101936149B - Automatic circulation switchers, separate zone water injection system and automatic circulation water injection method - Google Patents
Automatic circulation switchers, separate zone water injection system and automatic circulation water injection method Download PDFInfo
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Abstract
The invention discloses an automatic circulation separate zone periodical water injection method of a water injection well. More than two automatic circulation switchers are arranged in a water injection string and in a way of corresponding to each oil layer; in each automatic circulation switcher, a motor for opening or closing an eccentric water distribution valve is connected with a micro processor; the micro processors of the automatic circulation switchers are configured with opening and closing programs respectively; and the automatic circulation switchers automatically and alternately open and close according to a set time sequence to inject water into each oil layer circularly to realize periodical pulse water injection to underground oil layers. The method is simple in operation, reliable in operation and high in success rate, avoids manual control and a manual control factor, which causes errors easily, and improves water injection development effect.
Description
Technical field
The invention belongs to the oil extraction in oil field technical field, definite saying relates to the seperated layer water injection automatic cycle derailing switch used on water injection string in a kind of water injection well and includes the seperated layer water injection system of this seperated layer water injection automatic cycle derailing switch and the circulated layered periodicity automatic water injection method that this seperated layer water injection system is used.
Background technology
The down-hole oil reservoir situation in east China oil field is more complicated, entered the waterflooding extraction later stage at present, particularly some oil wells has entered the exploitation late period of ultra-high water-containing, the interlayer contradiction of each oil reservoir of oil well is increasingly sharpened, comprehensive water cut constantly raises, the object complexity of taping the latent power, the oilfield exploitation difficulty continues to increase, and makes and takes conventional zonal injection technology to carry out dynamically adjusting difficulty.
By petroleum industry publishing house in March, 2005 publish " in the oil recovery technique handbook third edition the 686th page-707 pages " layered water injection tool and tubing string ", introduced employing hollow allocation water pipe post, eccentric water distribution pipe column, subdivision injection tubing string hierarchical water flooding regime.Main use is eccentric subdivision injection tubing string now, control each layer of injection rate by the injection well downhole flow regulator water nozzle, the regularly wire Launching and Bailing test allotment water yield, it has solved the interlayer interference problem of each oil reservoir in the water injection well to a certain extent, alleviated interlayer contradiction, but because separate injection tubing string is subject to the restriction of packer setting section and test technology, and the impact of interlayer stability, after adopting subdivision injection to a certain extent, just can't further segment, its development space is limited, and exist due to water quality, fouling, the obstruction of the downhole water injection string that the reasons such as hole condition hole deviation cause, can't the pulling allotment etc. problem.
In addition, subdivision injection process using water nozzle is controlled each layer of water yield and is adopted down-hole steel wire dropping-fishing test technique also to have following problem:
1., during water filling, because the interlayer permeability grade is large, interlayer interference is large, make the difficulty that adopts water nozzle to control each layer of water yield larger, the laminated distributor under well water yield is unclear, is difficult to realize effective dispensing by water nozzle; Because interlayer pressure difference is large, also there is the problem of water filling crossflow simultaneously, do not reach the seperated layer water injection purpose.
2., for single water filling layer, layer intrinsic permeability is differential large, injected water is advanced by leaps and bounds along high permeability zone advantage passage, affect the injected water swept volume, increases the Tapping Residual Oil difficulty of middle hyposmosis in layer.
3., down-hole steel wire dropping-fishing test technique is affected greatly by hole condition, when oil field enters the waterflooding extraction later stage, along with the increase of recovered water, the produced-water reinjection amount increases, because the sewerage treatment difficulty is large, the water quality of water filling is variation gradually, content of impurities in water is high, and the tubing string fouling is serious, and oil pipe returns and the reason such as tells and cause pulling to be hampered or meet card, cause operation to do over again, affect the dispensing period of validity.
The Chinese invention patent manual that on September 10th, 2008, disclosed application number was 200810064336.9 discloses a kind of electromagnetical linearly adjusted flux device for down-hole injection-production, this device is to be provided with successively electromagnetic signal receiver, drive motor controller and drive motors in the injection well downhole flow regulator of setovering in down-hole string, the output shaft spiral of drive motors connects valve rod, and the valve rod lower end connects the valve ball coordinated with valve seat; Dangled an electromagnetic signal emitting device by steel wire by winch on ground by injection well downhole flow regulator in tubing string, ground control system is by electromagnetic signal emitting device emissioning controling signal, and the electromagnetic signal receiver in injection well downhole flow regulator opens and closes according to the signal controlling drive motors received the water yield that water distribution valve is adjusted water filling.But this electromagnetical linearly adjusted flux device for down-hole injection-production needs the ground handling personnel to control the switching of injection well downhole flow regulator by electromagnetic signal, thereby its water filling allotment operation is comparatively complicated, the human operational error easily occurs, cause layered waterflooding quantity error to occur, flood effectiveness is poor.
Summary of the invention
An object of the present invention is: provide a kind of and can automatically control the seperated layer water injection automatic cycle derailing switch that water distribution valve opens and closes.
For achieving the above object, the technical solution of the utility model is: a kind of seperated layer water injection automatic cycle derailing switch, comprise the switch main body that axially offers the central water flooding pipeline, in switch main body, biasing is provided with the eccentric center water-distributing valve, described eccentric center water-distributing valve comprises valve pocket, offer the inlet opening that is communicated with valve pocket on the tube wall of central water flooding pipeline, offer the weep hole be communicated with valve pocket on the outer wall of switch main body, be provided with spool in described valve pocket, spool is in transmission connection on the output shaft of a drive motors by transmission mechanism, also comprise that reaching for controlling batteries for the batteries to the drive motors power supply is the microprocessor that drive motors is periodically powered by setting sequential, the input interface of microprocessor is connected with batteries, the output interface of microprocessor is connected with drive motors.
Upper/lower terminal at described switch main body is connected with respectively upper and lower joint, be provided with an enclosure space between the outer wall of the inwall of described top connection and switch main body, described batteries, microprocessor and drive motors all are fixedly mounted in this enclosure space.
Between described drive motors and spool, adopt screw rod, nut transmission mechanism to be in transmission connection.
The hollow trunk-piston that described spool is and valve pocket inner wall sealing slidable fit axial along switch main body, the upper surface central axis of piston is to offering screwed hole, axially offer groove on the outer wall of piston, be fixed with the stop pin be slidably matched with this groove on the inwall of described valve pocket, described screw coaxial is fixed on the output shaft of drive motors.
Another object of the present invention is: a kind of automatic cycle seperated layer water injection system mainly be comprised of above-mentioned seperated layer water injection automatic cycle derailing switch is provided, comprise downhole water injection string, in water injection string, interval is provided with plural seperated layer water injection automatic cycle derailing switch, described seperated layer water injection automatic cycle derailing switch comprises the switch main body that axially offers the central water flooding pipeline, in switch main body, biasing is provided with the eccentric center water-distributing valve, described eccentric center water-distributing valve comprises valve pocket, offer the inlet opening that is communicated with valve pocket on the tube wall of central water flooding pipeline, offer the weep hole be communicated with valve pocket on the outer wall of switch main body, be provided with spool in described valve pocket, spool is in transmission connection on the output shaft of a drive motors by transmission mechanism, it is characterized in that, also comprise that reaching for controlling batteries for the batteries to the drive motors power supply is the microprocessor that drive motors is periodically powered by setting sequential, the input interface of microprocessor is connected with batteries, the output interface of microprocessor is connected with drive motors, the sequential of setting in the microprocessor of each seperated layer water injection automatic cycle derailing switch according to its installation opens and closes in turn.
Of the present invention also have a purpose to be: provide a kind of stratified periodical of the water injection well automatic cycle for above-mentioned automatic cycle seperated layer water injection system water-filling method, to solve in prior art the defect of easily making a fault because can not automatically controlling the manually-operated that causes.
Technical scheme of the present invention is: a kind of water injection well automatic cycle stratified periodical water-filling method, in water injection string, corresponding each oil reservoir is provided with more than two and oil reservoir seperated layer water injection automatic cycle derailing switch one to one, in each seperated layer water injection automatic cycle derailing switch, be provided with for opening and closing the water distribution valve of waterflood path, be connected with respectively drive motors on the spool of the water distribution valve in each seperated layer water injection automatic cycle derailing switch, upper being connected with respectively for controlling the microprocessor of batteries to the drive motors power supply in each seperated layer water injection automatic cycle derailing switch, microprocessor on each automatic cycling switch device is set with respectively for controlling batteries and powers to open or close the keying sequential of waterflood path to drive motors, open and close sequential and comprise the waterflood path opening time, continue the unlatching cycle, the waterflood path shut-in time, continue the cycle of closing, each seperated layer water injection automatic cycle derailing switch is by the keying sequential opening and closing in turn automatically of setting, for each oil reservoir according to the cycle of the setting water filling that circulated, realize down-hole oil reservoir Cyclic injection.
In described water injection string, the quantity of automatic cycle derailing switch is no more than 4.
Described water injection string is connected with flow control valve and pressure meter by surface line, by ground artificial, is rotated and is regulated the individual layer water filling water yield.
Adopt technical scheme of the present invention can obtain following effect:
1. simple to operate, reliable operation, eliminated the factor that manual control easily causes error, makes the efficiency of seperated layer water injection greatly improve;
2. the regular automatic operation of cycling switch device, can realize the water filling of multiple zone recurrent pulses, solves a layer interior contradiction, increases the remaining oil sweep efficiency of middle hyposmosis in layer;
3. solve interlayer pressure difference large, the problem of water injection well crossflow, improve waterflooding development effect;
4. the ground Real-Time Monitoring individual layer water yield, individual layer stream are pressed, and can allocate in real time the water yield, solve water nozzle and control each layer of large problem of water yield difficulty, and the individual layer water injection rate is accurate, clear; Do not need down-hole steel wire dropping-fishing test and allotment, reduce energy consumption, raise the efficiency, improve the dispensing period of validity.
The accompanying drawing explanation
The structural representation that Fig. 1 is seperated layer water injection automatic cycle derailing switch in the present invention;
The structural representation that Fig. 2 is water injection string system of the present invention;
The Deplug schematic diagram that Fig. 3 ~ Fig. 6 is automatic cycle layered water injection method of the present invention.
The specific embodiment
For realizing integrated installation microprocessor in seperated layer water injection automatic cycle derailing switch that the water filling of water injection well automatic cycle stratified periodical need to connect in water injection string, by microprocessor, control and realize automatic water filling.Its concrete structure as shown in Figure 1, comprise that central axis is to the switch main body 8 that offers filling pipe, the upper/lower terminal of switch main body 8 has been threaded connection respectively top connection 1 and lower contact 9, be provided with the eccentric center water-distributing valve in the interior biasing of switch main body 8, this eccentric center water-distributing valve comprises the valve pocket 11 of axially offering, offer respectively the inlet opening 10 and the weep hole 12 that are communicated with this valve pocket 11 on the inside and outside wall of switch main body 8, the common water distribution passage that forms of inlet opening 10, weep hole 12 and valve pocket 11.In valve pocket 11, sealing is slided and is equipped with the spool 7 for opening and closing the water distribution passage, and spool 7 is connected on the output shaft of drive motors 4 by screw rod, nut rotation mechanism driving.In the present embodiment, screw rod 5 coaxially is connected with the output shaft of drive motors 4, spool 7 adopts hollow tubular piston structure, offer the screwed hole with screw rod 5 threaded engagement in the upper surface of this piston, axially offer groove on the outer wall of piston, be fixed with on the sidewall of valve pocket 11 with the piston outer wall respective grooves and be slidably matched for preventing that it is by the stop pin 6 of screw rod 5 driven rotary.Be connected with the microprocessor 3 of periodically powering by the setting sequential for controlling it on drive motors 4, the input of microprocessor 3 is connected with batteries 2, and the output of microprocessor 3 is connected on drive motors 4.Between the inwall of the outer wall of switch main body 8 and top connection 1, sealing is provided with an enclosure space, and batteries 2, microprocessor 3 and drive motors 4 are fixed in this enclosure space from top to bottom successively.
What the microprocessor 3 used in the present embodiment adopted is the PIC18F2620 single-chip microcomputer of Microchip company, before use, first at aboveground test drive motors 4, start to rotate until hollow trunk-piston 7 opens or closes water distribution passage needed duration of runs, then write opening time of controlling drive motors 4 work in the clock circuit of microprocessor 3, duration of runs of drive motors when continuing unlatching cycle, shut-in time, continue the cycle of closing and opening and closing the water distribution passage, make microprocessor can send starting or halt instruction when arriving the specific time cycle.
Being installed in water injection string of above-mentioned seperated layer water injection automatic cycle derailing switch formed to automatic cycle seperated layer water injection system, as shown in Figure 2, in the present embodiment, oil well has four oil reservoir 22-1,22-2,22-3 and 22-4, be connected in down-hole string corresponding each oil reservoir down to correspondence position by four automatic cycle switch 17-1,17-2,17-3 and 17-4 are alternate with three packers 18, be provided with hydraulic anchor 16 on the top of tubing string, the bottom of tubing string is provided with flow-limiting valve 19, screen casing 20 and plug 21.Be provided with surface line 33, flow control valve 32 and pressure meter 31 on ground and form the surface flow amount control system.Tubing string is gone into the well to design attitude.While setting, water enters oil pipe 14 from surface line 33, and when pressure reaches 4MPa, hydraulic anchor 16 anchor teeth open promptly sleeve pipe 15 inwalls; When pressure reaches 8MPa, water injection packers 18 at different levels set simultaneously, realize the interlayer packing of oil reservoir.
Before carrying out seperated layer water injection, each automatic cycling switch device 17-1,17-2,17-3 and 17-4 close, suppose now any one oil reservoir in each oil reservoir 22-1,22-2,22-3 and 22-4 to be carried out to seperated layer water injection, when individual layer circulation water injection cycle is X days, the process of circulated layered cyclic waterflooding method is as follows:
1., if while wanting oiling layer 22-4, corresponding seperated layer water injection cycling switch device 17-4 opens, other seperated layer water injection cycling switch device 17-1, 17-2 and 17-3 keep closing, see Fig. 3, single oiling layer 22-4, microprocessor 3 in seperated layer water injection cycling switch device 17-4 is connected batteries 2 and drive motors 4 send according to the predefined opening time and is rotated in the forward signal, drive motors 4 is rotated in the forward, driving screw rod 5 is rotated in the forward, under the barrier effect coordinated with respective grooves at stop pin 6, hollow trunk-piston 7 passes through screw rod, nut transmission mechanism moves upward and opens waterflood path, after drive motors 4 is rotated in the forward the time of setting, microprocessor 3 sends stop signal, drive motors 4 stops the rotation, the place of being sealed and matched that the sealing ring of hollow trunk-piston 7 arrives valve pocket 11 closes the water distribution passage, automatic cycle derailing switch 17-4 enters and continues the unlatching cycle, start water filling, by surface flow amount controller 32 allotment water injection rates, water filling after x days, reach the shut-in time when 3 working times of microprocessor, microprocessor 3 sends the reverse rotation signal, drive motors 4 reverse rotations, drive screw rod 5 reverse rotations, under the barrier effect of stop pin 6, hollow trunk-piston 7 moves downward, after drive motors 4 reverse rotation setting-up times, microprocessor 3 sends stop signal, drive motors 4 stops the rotation, the place of being sealed and matched that hollow trunk-piston 7 sealing rings arrive valve pocket 11 closes the water distribution passage, seperated layer water injection cycling switch device 17-4 closes, start to continue the cycle of closing.Seperated layer water injection cycling switch device 17-4 closes, and produces unsettled Pressure Drop oil reservoir is inner, makes between different permeability substratums fluid carry out corresponding unstable friendship seepage flow moving, promote the capillary imbibition effect, increase its imbibition degree of depth, enlarge the sweep efficiency of injected water, improve oil production.Just realize above-mentioned purpose, prepare to change layer.
2., if while wanting oiling layer 22-3, corresponding seperated layer water injection cycling switch device 17-3 opens, other seperated layer water injection cycling switch device 17-1, 17-2 and 17-4 keep closing, see Fig. 4, single oiling layer 22-3, microprocessor 3 in seperated layer water injection cycling switch device 17-3 is connected batteries 2 and drive motors 4 send according to the predefined opening time and is rotated in the forward signal, drive motors 4 is rotated in the forward, driving screw rod 5 is rotated in the forward, under the barrier effect coordinated with respective grooves at stop pin 6, hollow trunk-piston 7 passes through screw rod, nut transmission mechanism moves upward and opens waterflood path, after drive motors 4 is rotated in the forward the time of setting, microprocessor 3 sends stop signal, drive motors 4 stops the rotation, automatic cycle derailing switch 17-3 enters and continues the unlatching cycle, start water filling, by surface flow amount controller 32 allotment water injection rates, water filling after x days, reach the shut-in time when 3 working times of microprocessor, microprocessor 3 sends the reverse rotation signal, drive motors 4 reverse rotations, drive screw rod 5 reverse rotations, under the barrier effect of stop pin 6, hollow trunk-piston 7 moves downward, after drive motors 4 reverse rotation setting-up times, microprocessor 3 sends stop signal, drive motors 4 stops the rotation, the place of being sealed and matched that hollow trunk-piston 7 sealing rings arrive valve pocket 11 closes the water distribution passage, seperated layer water injection cycling switch device 17-3 closes, start to continue the cycle of closing.Seperated layer water injection cycling switch device 17-3 closes, and produces unsettled Pressure Drop oil reservoir is inner, makes between different permeability substratums fluid carry out corresponding unstable friendship seepage flow moving, promote the capillary imbibition effect, increase its imbibition degree of depth, enlarge the sweep efficiency of injected water, improve oil production.Just realize above-mentioned purpose, prepare to change layer.
3., if while wanting oiling layer 22-2, corresponding seperated layer water injection cycling switch device 17-2 opens, other seperated layer water injection cycling switch device 17-1, 17-3 and 17-4 keep closing, see Fig. 5, single oiling layer 22-2, microprocessor 3 in seperated layer water injection cycling switch device 17-2 is connected batteries 2 and drive motors 4 send according to the predefined opening time and is rotated in the forward signal, drive motors 4 is rotated in the forward, driving screw rod 5 is rotated in the forward, under the barrier effect coordinated with respective grooves at stop pin 6, hollow trunk-piston 7 passes through screw rod, nut transmission mechanism moves upward and opens waterflood path, after drive motors 4 is rotated in the forward the time of setting, microprocessor 3 sends stop signal, drive motors 4 stops the rotation, automatic cycle derailing switch 17-2 enters and continues the unlatching cycle, start water filling, by surface flow amount controller 32 allotment water injection rates, water filling after x days, reach the shut-in time when 3 working times of microprocessor, microprocessor 3 sends the reverse rotation signal, drive motors 4 reverse rotations, drive screw rod 5 reverse rotations, under the barrier effect of stop pin 6, hollow trunk-piston 7 moves downward, after drive motors 4 reverse rotation setting-up times, microprocessor 3 sends stop signal, drive motors 4 stops the rotation, the place of being sealed and matched that hollow trunk-piston 7 sealing rings arrive valve pocket 11 closes the water distribution passage, seperated layer water injection cycling switch device 17-2 closes, start to continue the cycle of closing.Seperated layer water injection cycling switch device 17-2 closes, and produces unsettled Pressure Drop oil reservoir is inner, makes between different permeability substratums fluid carry out corresponding unstable friendship seepage flow moving, promote the capillary imbibition effect, increase its imbibition degree of depth, enlarge the sweep efficiency of injected water, improve oil production.Just realize above-mentioned purpose, prepare to change layer.
4., if while wanting oiling layer 22-1, corresponding seperated layer water injection cycling switch device 17-1 opens, other seperated layer water injection cycling switch device 17-2, 17-3 and 17-4 keep closing, see Fig. 6, single oiling layer 22-1, microprocessor 3 in seperated layer water injection cycling switch device 17-1 is connected batteries 2 and drive motors 4 send according to the predefined opening time and is rotated in the forward signal, drive motors 4 is rotated in the forward, driving screw rod 5 is rotated in the forward, under the barrier effect coordinated with respective grooves at stop pin 6, hollow trunk-piston 7 passes through screw rod, nut transmission mechanism moves upward and opens waterflood path, after drive motors 4 is rotated in the forward the time of setting, microprocessor 3 sends stop signal, drive motors 4 stops the rotation, automatic cycle derailing switch 17-1 enters and continues the unlatching cycle, start water filling, by surface flow amount controller 32 allotment water injection rates, water filling after x days, reach the shut-in time when 3 working times of microprocessor, microprocessor 3 sends the reverse rotation signal, drive motors 4 reverse rotations, drive screw rod 5 reverse rotations, under the barrier effect of stop pin 6, hollow trunk-piston 7 moves downward, after drive motors 4 reverse rotation setting-up times, microprocessor 3 sends stop signal, drive motors 4 stops the rotation, the place of being sealed and matched that hollow trunk-piston 7 sealing rings arrive valve pocket 11 closes the water distribution passage, seperated layer water injection cycling switch device 17-1 closes, start to continue the cycle of closing.Seperated layer water injection cycling switch device 17-1 closes, and produces unsettled Pressure Drop oil reservoir is inner, makes between different permeability substratums fluid carry out corresponding unstable friendship seepage flow moving, promote the capillary imbibition effect, increase its imbibition degree of depth, enlarge the sweep efficiency of injected water, improve oil production.Just realize above-mentioned purpose, prepare to change layer.
Circulation water injection cycle finishes, repeat front 1., 2., 3., 4. step, carry out the next round cyclic waterflooding, so move in circles, realize the regularly periodic cycle of Open-closure-unlatching automatically of automatic cycle derailing switch.Be connected on each the automatic cycle derailing switch in water injection string different sequential is set respectively, each automatic cycling switch device opens and closes according to the sequential rotation of setting in self microprocessor, thereby reaches the water filling of water injection well automatic cycle stratified periodical.
During seperated layer water injection, the flow control valve 2 of ground control system shows the water injection rate of corresponding oil reservoir, and pressure meter 1 shows the injection stream pressure of corresponding oil reservoir, and flow control valve 2 Real-Time Monitorings inject flows, and changes in flow rate is regulated water injection rate by flow control valve 2 at any time; According to pressure changing, can judge the water suction situation of corresponding oil reservoir, the down-hole string situation, as pressure raises suddenly, can judge that there is obstruction down-hole, needs to carry out the well-flushing processing simultaneously.
During well-flushing, injected water enters sleeve pipe 15 annular spaces by surface line 33, pass through successively from top to bottom the well-flushing passage of each water injection packer 18, arrive tubing string bottom plug 21, from screen casing 20, flow-limiting valve 19, enter in oil pipe 14, always uply from well mouth oil pipe, return out, circulation well cleanup, remove shaft bottom foul, dirt etc.
During deblocking, above carry down-hole string, each water injection packer 18 deblockings, packing element resilience deblocking, trip out tubing string.
The present invention is not limited to above-described embodiment, and in actual applications, the cycling switch device 7 be arranged on water injection string can be 2～4, according to the actual conditions flexible configuration of oil reservoir in oil well.
Claims (8)
1. a seperated layer water injection automatic cycle derailing switch, comprise the switch main body that axially offers the central water flooding pipeline, in switch main body, biasing is provided with the eccentric center water-distributing valve, described eccentric center water-distributing valve comprises valve pocket, offer the inlet opening that is communicated with valve pocket on the tube wall of central water flooding pipeline, offer the weep hole be communicated with valve pocket on the outer wall of switch main body, be provided with spool in described valve pocket, spool is in transmission connection on the output shaft of a drive motors by transmission mechanism, it is characterized in that, also comprise that reaching for controlling batteries for the batteries to the drive motors power supply is the microprocessor that drive motors is periodically powered by setting sequential, the input interface of microprocessor is connected with batteries, the output interface of microprocessor is connected with drive motors.
2. seperated layer water injection automatic cycle derailing switch according to claim 1, it is characterized in that, upper/lower terminal at described switch main body is connected with respectively upper and lower joint, be provided with an enclosure space between the outer wall of the inwall of described top connection and switch main body, described batteries, microprocessor and drive motors all are fixedly mounted in this enclosure space.
3. seperated layer water injection automatic cycle derailing switch according to claim 1, is characterized in that, between described drive motors and spool, adopts screw rod, nut transmission mechanism to be in transmission connection.
4. seperated layer water injection automatic cycle derailing switch according to claim 3, it is characterized in that, the hollow trunk-piston that described spool is and valve pocket inner wall sealing slidable fit axial along switch main body, the upper surface central axis of piston is to offering screwed hole, axially offer groove on the outer wall of piston, be fixed with the stop pin be slidably matched with this groove on the inwall of described valve pocket, described screw coaxial is fixed on the output shaft of drive motors.
5. an automatic cycle seperated layer water injection system, comprise downhole water injection string, in water injection string, interval is provided with plural seperated layer water injection automatic cycle derailing switch, described seperated layer water injection automatic cycle derailing switch comprises the switch main body that axially offers the central water flooding pipeline, in switch main body, biasing is provided with the eccentric center water-distributing valve, described eccentric center water-distributing valve comprises valve pocket, offer the inlet opening that is communicated with valve pocket on the tube wall of central water flooding pipeline, offer the weep hole be communicated with valve pocket on the outer wall of switch main body, be provided with spool in described valve pocket, spool is in transmission connection on the output shaft of a drive motors by transmission mechanism, it is characterized in that, also comprise that reaching for controlling batteries for the batteries to the drive motors power supply is the microprocessor that drive motors is periodically powered by setting sequential, the input interface of microprocessor is connected with batteries, the output interface of microprocessor is connected with drive motors, the sequential of setting in the microprocessor of each seperated layer water injection automatic cycle derailing switch according to its installation opens and closes in turn.
6. a water injection well automatic cycle stratified periodical water-filling method, it is characterized in that, in water injection string, corresponding each oil reservoir is provided with more than two and oil reservoir seperated layer water injection automatic cycle derailing switch one to one, described each seperated layer water injection automatic cycle derailing switch comprises the switch main body that axially offers the central water flooding pipeline, in switch main body, biasing is provided with the eccentric center water-distributing valve, described eccentric center water-distributing valve comprises valve pocket, offer the inlet opening that is communicated with valve pocket on the tube wall of central water flooding pipeline, offer the weep hole be communicated with valve pocket on the outer wall of switch main body, be provided with spool in described valve pocket, spool is in transmission connection on the output shaft of a drive motors by transmission mechanism, on described drive motors, be connected with for the batteries to drive motors power supply and for microprocessor that to control batteries be the drive motors power supply, the input interface of microprocessor is connected with batteries, the output interface of microprocessor is connected with drive motors, microprocessor on each automatic cycling switch device is set with respectively for controlling batteries and powers to open or close the keying sequential of waterflood path to drive motors, open and close sequential and comprise the waterflood path opening time, continue the unlatching cycle, the waterflood path shut-in time, the duration of runs of drive motors when continuing the cycle of closing and opening and closing waterflood path, each seperated layer water injection automatic cycle derailing switch is by the keying sequential opening and closing in turn automatically of setting, for each oil reservoir according to the cycle of the setting water filling that circulated, realize down-hole oil reservoir Cyclic injection.
7. water injection well automatic cycle stratified periodical water-filling method according to claim 6, is characterized in that, in described water injection string, the quantity of automatic cycle derailing switch is no more than 4.
8. water injection well automatic cycle stratified periodical water-filling method according to claim 6, is characterized in that, described water injection string is connected with flow control valve and pressure meter by surface line, by ground artificial, regulates the individual layer water filling water yield.
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| CN112682005B (en) * | 2020-12-29 | 2022-09-20 | 四川省科学城久利电子有限责任公司 | Novel structure is adjusted to water injection mandrel |
| CN113389542B (en) * | 2021-06-08 | 2022-09-20 | 北京六合伟业科技股份有限公司 | Novel stratified water injection pulse generation system |
| CN113216914A (en) * | 2021-06-09 | 2021-08-06 | 门万龙 | Layered injection allocation device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013333Y (en) * | 2007-03-26 | 2008-01-30 | 邓亚东 | Computer allocated gauging water distributor |
| CN101498211A (en) * | 2009-02-26 | 2009-08-05 | 中国石油化工股份有限公司 | Method for water distribution by sound wave remote control |
| CN201306161Y (en) * | 2008-12-09 | 2009-09-09 | 薛相君 | A full-automatic flow regulation water distributor |
| RU2387816C1 (en) * | 2009-04-23 | 2010-04-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method of cluster water injection into fill-in wells |
| 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 |
| CN201810291U (en) * | 2010-09-17 | 2011-04-27 | 中国石油化工股份有限公司 | Zonal injection automatic circulation switch device and automatic circulation zonal injection system |
-
2010
- 2010-09-17 CN CN2010102850661A patent/CN101936149B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013333Y (en) * | 2007-03-26 | 2008-01-30 | 邓亚东 | Computer allocated gauging water distributor |
| CN201306161Y (en) * | 2008-12-09 | 2009-09-09 | 薛相君 | A full-automatic flow regulation water distributor |
| CN101498211A (en) * | 2009-02-26 | 2009-08-05 | 中国石油化工股份有限公司 | Method for water distribution by sound wave remote control |
| RU2387816C1 (en) * | 2009-04-23 | 2010-04-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method of cluster water injection into fill-in wells |
| 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 |
| CN201810291U (en) * | 2010-09-17 | 2011-04-27 | 中国石油化工股份有限公司 | Zonal injection automatic circulation switch device and automatic circulation zonal injection system |
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