CN101012737A - Switch of output increasing, water searching and blocking method for oil well in production - Google Patents
Switch of output increasing, water searching and blocking method for oil well in production Download PDFInfo
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- CN101012737A CN101012737A CN 200710051505 CN200710051505A CN101012737A CN 101012737 A CN101012737 A CN 101012737A CN 200710051505 CN200710051505 CN 200710051505 CN 200710051505 A CN200710051505 A CN 200710051505A CN 101012737 A CN101012737 A CN 101012737A
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Abstract
The invention relates to a production acquiring, groundwater prospecting and water plugging method of derailing switch under the production state of oil production well. The invention sets motor control derailing switches on the ground water prospecting layer, the production acquiring layer and the water plugging layer. In two ends of derailing switch packers are installed. The shell of control part of motor is connected with the upper part of fluid in-out channel in thread so that the switch bar at the front end of motor moves forwards or backwards to close or open the fluid in-out channel in the layer when the motor rotate in clockwise or counterclockwise direction. The derailing switch has the groundwater prospecting and production acquiring period and the water plugging period. In the groundwater prospecting and production acquiring period, the derailing switch is a time derailing switch and by set groundwater prospecting time gauge it is opened or closed in timing. In the water plugging period, the derailing switch will change the state from open to close or form close to open. There are two necessary conditions shown as follows. The first is that the derailing period is in the working permitting section of set water plugging time gauge and the second is that it must be receive pressure pulse signals. The invention realizes automatic groundwater prospecting and production acquiring under the production state and manages the water plugging process in time segment by the simplest signal.
Description
Technical field
The present invention relates to layering water detection, layering in the oil-gas mining process in oil field and ask and produce and the separate zone water shutoff method, be specifically related to producing well derailing switch under production status and ask product, water detection and shutoff method.
Background technology
In the oilfield exploitation later stage, oil production by layer and relevant water detection shutoff method are one of important measures that reduce moisture content, in the prior art, Chinese patent application (publication number: 1601048, open day on March 30th, 2005) " a kind of fixed tubular column multilayer repeats to transfer layer producing well lower tubular column and implementing process thereof " discloses a kind of method that layer is produced of changing of multilayer, by on carry polished rod and drive on-off controller and pass through reversing switch from bottom to up, just can change the on off state of a place layer, reach and change the purpose that layer is produced.Produce just means because change layer, the purpose of changing layer is that moisture high layer is closed, and reduces moisture content, reduces invalid circulation.So, be by producing various schemes as a trial and therefrom filtering out a kind of best production decision, so need multiple combination on probation with the water detection process of this technology, with four layers of producing well is example, one has 16 kinds of compound modes, changes layer at every turn and must employ crane, and workload is very big; And this layer mode of changing determined it only to be suitable for insert pump, can't implement with tubing pump.Chinese patent application (publication number: 1554855, open day on December 15th, 2004) " a kind of method of oil well water detection water blockoff " disclosed shutoff method of looking for, core is with different compression waves, represents the switching mode of different votage control switch devices; When from well head with the high pressure pump truck in conjunction with falling head valve, produce pressure wave signal after, all derailing switches begin to judge whether this pressure wave signal gives " I "; Allow " I " to open or close, then, need the derailing switch of action to open or close by semaphore request.Weak point be with signal from passing to the hysteresis that the position produced and the inertia at the derailing switch place more than the km after well head sends with pump truck, bring certain degree of difficulty for the time control of every kind of pressure wavelength, misoperation is easy to generate error code.Not possessing under the situation of two merit communication conditions, whether error code appears, can't feed back to us; Because the pressure information of well head occurs at random, the control circuit of derailing switch can only be in waiting signal state or duty all the time, all can't adopt energy-saving mode in any link again.
Summary of the invention
The present invention is for the problem and the defective of the existence that overcomes above-mentioned prior art, provide a kind of producing well derailing switch under production status to ask product, water detection and shutoff method, this method realizes not having under the situation of human intervention water detection automatically and asks product under production status, with single pressure pulse signal and the water blockoff timetable water blockoff that combines.
For realizing that the scheme that goal of the invention adopted is:
Producing well is derailing switch water detection under production status, ask and produce and shutoff method, water detection, ask product, water plugging string and hoisting system comprise oil pumper 1, back-off sub 2, packer 3, derailing switch 4, one way valve 5, it is characterized in that: a, with back-off sub and packer 3, derailing switch 4 and one way valve 5 are cascaded by oil pipe, being lowered to needs water detection, ask in the oil well of product and water blockoff, wherein packer is identical with the number of plies that oil well is divided with the quantity of derailing switch 4, after they arrive corresponding position, suppress with the high pressure pump truck earlier and make packer setting on ground, pitching breaks away from the above oil pipe of back-off sub with it again, again with oil pumper 1 down to corresponding position, minimum spacing is 2.5 meters between the two-stage packer 3; It is because some big oil reservoir itself just surpasses 3 meters, so the spacing of packer can only define minimum value that the packer spacing does not provide higher limit.
B, needing water detection, asking and produce and the interval of water blockoff is placed the derailing switch that has micro machine control, packer is equipped with at the two ends of derailing switch respectively, make the liquid access way that the liquid of this layer must be by each layer derailing switch, the shell of Electric Machine Control part by screwed connection above the liquid access way, the liquid access way that makes the switch lever of motor front end can travel forward when motor just changes and close this layer moves backward when motor reverses and opens the liquid access way;
C, derailing switch are divided into two periods: term and water blockoff phase are asked in water detection, in water detection, ask between term, derailing switch is a regular switching device, and its control circuit carries out timing by the water detection timetable of prior setting, and the on off state of derailing switch changes by the requirement of water detection timetable; During water blockoff, derailing switch will change once current state: by " opening " change " pass " or by " pass " change " opens ", and must possess two conditions simultaneously: 1. derailing switch is in " the allowing working hour " in the water blockoff timetable that sets in advance; 2. receive the pressure pulse signal of prior agreement;
The liquid aqueous rate of d, extraction is drawn by the wellhead sampling chemical examination, and output is obtained by the well head gauging.
Derailing switch 4 is by top connection 6, liquid access way 14, the shell 8 of Electric Machine Control part, battery pack 9, pressure sensor 10, control circuit 11, direct current micromotor 12, switch lever 13, sprue 7 and lower contact 15 are formed, sprue 7 is each layer fluid passage, top connection 6 and lower contact 15 all are designed to tubing thread, can directly link to each other with oil pipe, the shell 8 of Electric Machine Control part by screwed connection above liquid access way 14, make can travel forward when motor just the changes liquid access way 14 of " closing " this layer of the switch lever 13 of motor front end, " opening " liquid access way 14 backward moves when motor reverses.Switch lever 13 adopts movable sealing with the shell 8 of Electric Machine Control part, control circuit 11 is hinges of Electric Machine Control part, it links to each other with battery pack 9, direct current micromotor 12, pressure sensor 10 respectively by connector or high temperature wire, simultaneously, can also realize the U mouth of control circuit and host computer or 232 mouthfuls communication with connector by the connection connected mode.
Described water detection timetable is by starting between delay time, fixed time interval and the termination time is formed.
The water detection timetable is set to sky, and when the control circuit of derailing switch 4 was read " water detection timetable " for sky, derailing switch entered the water blockoff phase at the very start.
Described water blockoff timetable by starting delay time, allowing the working hour and the working hour of forbidding to form, wherein allows working hour and forbids that working hour is that circulation is carried out.
Derailing switch 4 will be provided with the initial on off state of derailing switch 4, water detection timetable, water blockoff timetable earlier and according to depth of setting the pressure threshold value is set before going into the well according to designing requirement and geologic information.The pressure pulse signal of described gauge tap device is a single pulse signal by rising edge 16, bandwidth 17, trailing edge 18 and pressure threshold value 19.Wherein, pressure threshold value 19 is relevant with the depth of setting of derailing switch 4, and the pressure recovery value of General Definition after bumping off a well a little more than this is so the pressure threshold value is to set according to the historical geologic information of every mouthful of well; Bandwidth refers to the time range that force value is kept greater than the pressure threshold value, for convenience of implementation, that can decide is more wide in range, such as bandwidth greater than three minutes less than 15 minutes, the high-pressure pump appearance of vehicle of well head is easily implemented, also can be prevented to think the pressure recovery value after the oil pumper stop pumping by mistake to be possible of pressure signal simultaneously because of the pressure threshold value is provided with improper causing.As shown in Figure 4.
The water detection timetable is made of following column:
| Start delay time | The actuation time first time | The actuation time second time | Actuation time for the third time | ...... | Termination time |
Start control circuit energising the begin calculating of delay time from derailing switch 4, at lower tubular column with suppress in the process of seat envelope, derailing switch 4 does not have any state and changes, for saves energy, this time period control circuit is in resting state, and power consumption is 1% of normal operating conditions; Since the actuation time first time, when the data in the timetable are not sky, timer arrives constantly from this, the control motor carries out a counter motion, thereby change the on off state of derailing switch, by carrying out different combinations the actuation time to many derailing switches, reach in official hour, automatically water detection and ask the purpose of product.After various switch combinations " examination " are crossed, by the well head metering device, can be well understood to the output, moisture of each period, but all regularly the votage control switch device arrive unified termination time of water detection timetables, water detection end-of-job.In the whole water detection course of work, all " opening ", " pass " instruction are regularly finished, and need not human intervention.
The water blockoff timetable is made of following column:
| Start delay time | Wait for the working time section | Forbid the working time section |
Start delay time for but the wait working time section of many timing votage control switch devices is separated, accomplished before control signal arrives, at any one constantly, but always have only a timing votage control switch device to be in wait state, because the automatic water detection process by the front, each oil reservoir moisture known; The on off state of each oil layer switch device is known; For the layer of needs change on off state, at first from the water blockoff timetable, find out the wait working time section of a convenient construction, and give a single pulse signal from well head in this time period, just can control and change layer.Promptly in the wait working time of any derailing switch 4 section, well head has sent a qualified single pulse signal, this derailing switch will change on-off mode one time, and a mark is set on the control circuit of this motor, do not allow this derailing switch 4 to carry out the change of twice or twice above on-off mode in this wait working time section.Like this, even wait for that at one the working time section has provided two or more qualified single pulse signals, derailing switch 4 also can only move once, makes at this and waits for that the working time section has repeatedly qualified single pulse signal can only become multiple insurance, can not produce malfunction.
The invention provides a kind of producing well derailing switch under production status and ask product, water detection and shutoff method, this method realizes not having under the situation of human intervention water detection automatically and asks product under production status, with single pressure pulse signal and the water blockoff timetable water blockoff that combines.
Description of drawings
Fig. 1 is water detection of the present invention, ask the structural representation of product, water plugging string and hoisting system.
When Fig. 2 was in opening for derailing switch, the liquid that each oil reservoir produced was given rise to the schematic diagram on ground by oil pumper from the liquid access way.
When Fig. 3 was in closed condition for derailing switch, the feed pathway of derailing switch place oil reservoir and sprue were isolated, and the liquid of other oil reservoir gives rise to the schematic diagram on ground from sprue.
Fig. 4 is the pressure pulse signal schematic diagram of gauge tap device.
Fig. 5 is the control circuit figure of derailing switch.
The specific embodiment
The invention will be further described in conjunction with the accompanying drawings.
Producing well is derailing switch water detection under production status, ask and produce and shutoff method, a, will be by operation by oil pumper 1, back-off sub 2, packer 3, derailing switch 4, the precalculated position that water detecting and plugging pipe column that one way valve 5 is formed and hoisting system are lowered to oil well, concrete compound mode as shown in Figure 1, quantity according to oil reservoir, earlier with oil pipe with back-off sub 2 and with the packer 3 of some, derailing switch 4, one way valve 5 is cascaded by the mode of Fig. 1, being lowered to needs water detection, ask in the oil well of product and water blockoff, wherein packer 3 is identical with the number of plies that this oil well is divided with the quantity of derailing switch 4, and being placed on the perforated interval of each layer, packer 3 places the two ends of the perforated interval of each layer.After they arrive corresponding position, earlier ground suppress with the high pressure pump truck make packer setting and pitching that oil pipe more than the back-off sub is broken away from it after, oil pumper 1 is connected with oil pipe, down to corresponding position, minimum spacing is 2.5 meters between the two-stage packer 3 again; It is because some big oil reservoir itself just surpasses 3 meters, so the spacing of packer can only define minimum value that the packer spacing does not provide higher limit.
B, needing water detection, asking and produce and the interval of water blockoff is placed the derailing switch that has micro machine control, packer is equipped with at the two ends of derailing switch respectively, make the liquid access way that the liquid of this layer must be by each layer derailing switch, the shell of Electric Machine Control part by screwed connection above the liquid access way, the liquid access way that makes the switch lever of motor front end can travel forward when motor just changes and close this layer moves backward when motor reverses and opens the liquid access way;
C, derailing switch are divided into two periods: term and water blockoff phase are asked in water detection, in water detection, ask between term, derailing switch is a regular switching device, and its control circuit carries out timing by the water detection timetable of prior setting, and the on off state of derailing switch changes by the requirement of water detection timetable; During water blockoff, derailing switch will change once current state: by " opening " change " pass " or by " pass " change " opens ", and must possess two conditions simultaneously: 1. derailing switch is in " the allowing working hour " in the water blockoff timetable that sets in advance; 2. receive the pressure pulse signal of prior agreement;
The liquid aqueous rate of d, extraction is drawn by the wellhead sampling chemical examination, and output is obtained by the well head gauging.
Wherein, derailing switch is by top connection 6, liquid access way 14, the shell 8 of Electric Machine Control part, battery pack 9, pressure sensor 10, control circuit 11, direct current micromotor 12, switch lever 13, sprue 7 and lower contact 15 are formed, sprue 7 is each layer fluid passage, top connection 6 and lower contact 15 all are designed to tubing thread, can directly link to each other with oil pipe, the shell 8 of Electric Machine Control part by screwed connection above liquid access way 14, make can travel forward when motor just the changes liquid access way 14 of " closing " this layer of the switch lever 13 of motor front end, " opening " liquid access way 14 backward moves when motor reverses; Switch lever 13 adopts movable sealing with the shell 8 of Electric Machine Control part; Pressure sensor 10 keeps being communicated with sprue 7 always, so no matter whether derailing switch cuts out, the pressure that pressure sensor 10 can receive all the time from ground changes, relation between pressure sensor 10, control circuit 11, the direct current micromotor 12 as shown in Figure 5, by the different deciliter state of two relays of CPU control, direct current micromotor is produced rotate and reverse and quit work three kinds of states respectively; Circuit for controlling motor also leaves the communication interface with computer, so that the software that computerizeds control writes machine operation record and the pressure record of storing in data such as water detection timetable, water blockoff timetable and pressure threshold and the readout memory to circuit for controlling motor.
Sprue 7 is public passages of liquid, and the liquid of each layer has only by it and enters oil pipe.When derailing switch was in opening, after liquid entered sprue 7 from liquid access way 14, the liquid of each layer gave rise to ground by oil pumper with other, as shown in Figure 2.
When derailing switch was in closed condition, motor was released switch lever, and the sealed packing on the switch lever is isolated the feed pathway of derailing switch place oil reservoir and sprue; The liquid of the oil reservoir below it still can give rise to ground from sprue, as shown in Figure 3.
Derailing switch 4 will be provided with the initial on off state of derailing switch 4, water detection timetable, water blockoff timetable earlier and according to depth of setting the pressure threshold value is set before going into the well according to designing requirement and geologic information.
The pressure pulse signal of gauge tap device is a single pulse signal by rising edge 16, bandwidth 17, trailing edge 18 and pressure threshold value 19.Wherein, pressure threshold value 19 is relevant with the depth of setting of derailing switch 4, and the pressure recovery value of General Definition after bumping off a well a little more than this is so the pressure threshold value is to set according to the historical geologic information of every mouthful of well; Bandwidth refers to the time range that force value is kept greater than the pressure threshold value, for convenience of implementation, that can decide is more wide in range, such as bandwidth greater than three minutes less than 15 minutes, the high-pressure pump appearance of vehicle of well head is easily implemented, also can have been prevented to think the pressure recovery value after the oil pumper stop pumping by mistake to be possible of pressure signal simultaneously because of the pressure threshold value is provided with improper causing.As shown in Figure 4.
Below with four layers of oil well to ask product, water detection, water blockoff process be example, introduce the characteristics of this method:
1, the water detection timetable is set: chronomere: hour
| Initial state | Layer position | The derailing switch numbering | Start delay time | The actuation time first time | The actuation time second time | Actuation time for the third time | The 4th actuation time | Termination time | Done state |
| Open | 1 | 41 | 240 | 10 | 970 | Close | |||
| Close | 2 | 42 | 240 | 10 | 490 | 970 | Close | ||
| Close | 3 | 43 | 480 | 10 | 730 | 970 | Close | ||
| Close | 4 | 44 | 720 | 10 | 970 | Open |
Illustrate: 41 of derailing switches moved 1 time at the 250th hour, opened to become to close; Derailing switch 42 has moved twice: the 250 hours and has closed by close becoming to open with opening to become in the 490th hour; 43 close to become at the 490th hour to open with opening to become in 730 hours and close; 44 opened at 730 hours, had only action this time, when derailing switch need move several times, just inserted time value respectively on which time actuation time.
From top timetable as can be seen, if start the clock from derailing switch 4 energisings, the 10-250 that oil pumper 4 begins to produce hour, preceding 10 hours be lower tubular column and suppress an envelope time, the liquid measure of producing is from first floor, the well head gauging since the 8th day to the tenth day, the output of gained and moisture content are exactly the actual production fluid amount and the moisture content of first floor; In like manner, 250-490 hour, the liquid measure of being produced was from the second layer, since the 18 day to Ahau well head gauging, the output of gained and moisture content are exactly the actual production fluid amount and the moisture content of the second layer; In like manner, at 490-730 hour, can ask the 3rd layer and produce and water detection; 730-970 hour, can ask the 4th layer and produce and water detection.It should be foundation with every layer of last several days industry amount before closing that ordinary circumstance, water detection are asked product because a few days ago the liquid of being taken out contain oil pipe and sleeve pipe annular space before packer set, stay mixed liquor.
Behind 970 hours of powering up, water detection timetable end of run.The derailing switch water blockoff timetable that brings into operation, the water blockoff timetable is also set in advance before instrument is gone into the well.
2, the water blockoff timetable is set: chronomere: hour
| Layer position | Start delay time | Wait for the working time section | Forbid the |
| 1 | 0 | 24 | 72 |
| 2 | 24 | 24 | 72 |
| 3 | 48 | 24 | 72 |
| 4 | 72 | 24 | 72 |
As can be seen from the table, after the 970th hour, first 24 hours, all there is and have only a derailing switch 41 to be in wait state, make a call to a pressure pulse value in this period from well head, can only make derailing switch 41 change present on off state.Here it is high aquifer that the water detection result who supposes the front is the 3rd layer, need close, and first floor, the second layer and the 4th layer are the requirement producing zones, should open, and from the done state of water detection timetable as can be known, the first floor and the second layer need be opened again.
If power up a time value that begins to calculate from derailing switch during Q, as long as at 970+n * 96＜Q＜970+24+n * 96, n=0,1,2 ... .., give a pressure pulse signal from well head in time period, the on off state of derailing switch 41 just can become " opening " by " pass "; In like manner, at 970+n * 96+24＜Q＜970+24+n * 96+24, n=0,1,2 ... .., give a pressure pulse signal from well head in the time period, the on off state of derailing switch 42 just can become " opening " by " pass "; Briefly, (or the 5th any time of 24 hours any time in the 1st after powering on 970 hours that begin to calculate 24 hours ...) give a pressure pulse signal from well head, first floor derailing switch on off state just can become " opening " by " pass "; After powering on 970 hours that begin to calculate the 2nd any time in 24 hours given a pressure pulse signal from well head, and second layer derailing switch on off state just can become " opening " by " pass ".
And, also dissatisfied if after producing a period of time to present moisture content, because the water blockoff timetable is periodic duty, so, can also do further adjustment as the case may be.
Claims (6)
1, a kind of producing well derailing switch under production status is asked product, water detection and shutoff method, water detection, asks product, water plugging string and hoisting system to comprise oil pumper (1), back-off sub (2), packer (3), derailing switch (4), one way valve (5), it is characterized in that:
A, back-off sub and packer (3), derailing switch (4) and one way valve (5) are cascaded by oil pipe, be lowered to need water detection, ask produce and the oil well of water blockoff in, wherein packer is identical with the number of plies that oil well is divided with the quantity of derailing switch 4, after they arrive corresponding position, suppress with the high pressure pump truck earlier and make packer setting on ground, pitching breaks away from the above oil pipe of back-off sub with it again, again with oil pumper 1 down to corresponding position, minimum spacing is 2.5 meters between the two-stage packer 3;
B, needing water detection, asking and produce and the interval of water blockoff is placed the derailing switch that has micro machine control, packer is equipped with at the two ends of derailing switch respectively, make the liquid access way that the liquid of this layer must be by each layer derailing switch, the shell of Electric Machine Control part by screwed connection above the liquid access way, the liquid access way that makes the switch lever of motor front end can travel forward when motor just changes and close this layer moves backward when motor reverses and opens the liquid access way;
C, derailing switch are divided into two periods: term and water blockoff phase are asked in water detection, in water detection, ask between term, derailing switch is a regular switching device, and its control circuit carries out timing by the water detection timetable of prior setting, and the on off state of derailing switch changes by the requirement of water detection timetable; During water blockoff, derailing switch will change once current state: by " opening " change " pass " or by " pass " change " opens ", and must possess two conditions simultaneously: 1. derailing switch is in " the allowing working hour " in the water blockoff timetable that sets in advance; 2. receive the pressure pulse signal of prior agreement;
The liquid aqueous rate of d, extraction is drawn by the wellhead sampling chemical examination, and output is obtained by the well head gauging.
2, producing well according to claim 1 is derailing switch water detection under production status, ask and produce and shutoff method, it is characterized in that: derailing switch (4) is by top connection (6), liquid access way (14), the shell (8) of Electric Machine Control part, battery pack (9), pressure sensor (10), control circuit (11), direct current micromotor (12), switch lever (13), sprue (7) and lower contact (15) are formed, sprue (7) is each layer fluid passage, top connection (6) and lower contact (15) all are designed to tubing thread, directly link to each other with oil pipe, the shell (8) of Electric Machine Control part is by the top of screwed connection in liquid access way (14), and switch lever (13) adopts movable sealing with the shell (8) of Electric Machine Control part; Control circuit (11) links to each other with battery pack (9), direct current micromotor (12), pressure sensor (10) respectively by connector or high temperature wire.
3, producing well according to claim 1 derailing switch water detection under production status, ask and produce and shutoff method, it is characterized in that: described water detection timetable, by starting between delay time, fixed time interval and the termination time is formed.
4, producing well according to claim 1 derailing switch water detection under production status, ask and produce and shutoff method, it is characterized in that: the water detection timetable is set to sky, when the control circuit of derailing switch (4) was read " water detection timetable " for sky, derailing switch entered the water blockoff phase at the very start.
5, producing well according to claim 1 derailing switch water detection under production status, ask and produce and shutoff method, it is characterized in that: described water blockoff timetable, by starting delay time, allowing the working hour and the working hour of forbidding to form, wherein allow working hour and forbid that working hour is that circulation is carried out.
6, producing well according to claim 1 derailing switch water detection under production status, ask and produce and shutoff method, it is characterized in that: described pressure pulse signal be one by the artificial single pulse signal that defines rising edge, bandwidth, trailing edge and pressure threshold value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100515050A CN100540841C (en) | 2007-02-08 | 2007-02-08 | Producing well derailing switch water detection under production status, ask and produce and shutoff method |
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|---|---|---|---|
| CNB2007100515050A CN100540841C (en) | 2007-02-08 | 2007-02-08 | Producing well derailing switch water detection under production status, ask and produce and shutoff method |
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| CN101798912A (en) * | 2010-03-19 | 2010-08-11 | 杜立天 | Device and method for regulating and controlling water content of production fluid of underground layering of oil field |
| CN102852467A (en) * | 2011-06-30 | 2013-01-02 | 中国石油天然气股份有限公司 | Separate zone production technical string capable of protecting oil reservoirs |
| CN102953714A (en) * | 2012-10-26 | 2013-03-06 | 中国石油化工股份有限公司 | Underground intelligent layered pressure controlled oil extraction method |
| CN105064983A (en) * | 2015-06-04 | 2015-11-18 | 中国石油化工股份有限公司 | Underground wireless pressure measurement system, pressure measurement electric switchgear thereof and data collection transceiver |
| CN105178947A (en) * | 2015-09-18 | 2015-12-23 | 中国石油天然气股份有限公司 | Water locating-plugging integration method for horizontal well |
| CN106677736A (en) * | 2017-01-19 | 2017-05-17 | 天津昱利赢石油科技有限公司 | Movable shaft dynamic water exploration and plugging device |
| CN113153239A (en) * | 2020-01-23 | 2021-07-23 | 中国石油天然气股份有限公司 | From branch of control liquid production volume adopt ware and tubular column |
| CN114482912A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Horizontal well water shutoff agent injection process control method |
| CN116733426A (en) * | 2023-08-11 | 2023-09-12 | 哈尔滨艾拓普科技有限公司 | Oil well intelligent separate production system based on post-pump pressure pulse control and implementation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101798912A (en) * | 2010-03-19 | 2010-08-11 | 杜立天 | Device and method for regulating and controlling water content of production fluid of underground layering of oil field |
| CN102852467A (en) * | 2011-06-30 | 2013-01-02 | 中国石油天然气股份有限公司 | Separate zone production technical string capable of protecting oil reservoirs |
| CN102953714A (en) * | 2012-10-26 | 2013-03-06 | 中国石油化工股份有限公司 | Underground intelligent layered pressure controlled oil extraction method |
| CN105064983A (en) * | 2015-06-04 | 2015-11-18 | 中国石油化工股份有限公司 | Underground wireless pressure measurement system, pressure measurement electric switchgear thereof and data collection transceiver |
| CN105178947A (en) * | 2015-09-18 | 2015-12-23 | 中国石油天然气股份有限公司 | Water locating-plugging integration method for horizontal well |
| CN106677736A (en) * | 2017-01-19 | 2017-05-17 | 天津昱利赢石油科技有限公司 | Movable shaft dynamic water exploration and plugging device |
| CN113153239A (en) * | 2020-01-23 | 2021-07-23 | 中国石油天然气股份有限公司 | From branch of control liquid production volume adopt ware and tubular column |
| CN114482912A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Horizontal well water shutoff agent injection process control method |
| CN116733426A (en) * | 2023-08-11 | 2023-09-12 | 哈尔滨艾拓普科技有限公司 | Oil well intelligent separate production system based on post-pump pressure pulse control and implementation method |
| CN116733426B (en) * | 2023-08-11 | 2023-12-15 | 哈尔滨艾拓普科技有限公司 | Oil well intelligent separate production system based on post-pump pressure pulse control and implementation method |
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