CN104806195B - A kind of alternative effect thickening thin oil transfer drive method and system - Google Patents
A kind of alternative effect thickening thin oil transfer drive method and system Download PDFInfo
- Publication number
- CN104806195B CN104806195B CN201510111988.3A CN201510111988A CN104806195B CN 104806195 B CN104806195 B CN 104806195B CN 201510111988 A CN201510111988 A CN 201510111988A CN 104806195 B CN104806195 B CN 104806195B
- Authority
- CN
- China
- Prior art keywords
- water
- agent
- transfer drive
- control
- profile control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012546 transfer Methods 0.000 title claims abstract description 67
- 230000008719 thickening Effects 0.000 title claims abstract description 31
- 230000000694 effects Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000002347 injection Methods 0.000 claims abstract description 75
- 239000007924 injection Substances 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 230000005012 migration Effects 0.000 claims abstract description 6
- 238000013508 migration Methods 0.000 claims abstract description 6
- 238000011084 recovery Methods 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 230000037361 pathway Effects 0.000 claims abstract description 4
- 230000035699 permeability Effects 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 74
- 238000003860 storage Methods 0.000 claims description 28
- 239000003431 cross linking reagent Substances 0.000 claims description 20
- 229920000642 polymer Polymers 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000012752 auxiliary agent Substances 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000002562 thickening agent Substances 0.000 claims description 7
- 239000000049 pigment Substances 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000004891 communication Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 239000010779 crude oil Substances 0.000 description 8
- 238000011161 development Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 3
- 240000002853 Nelumbo nucifera Species 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 102100038591 Endothelial cell-selective adhesion molecule Human genes 0.000 description 2
- 101000882622 Homo sapiens Endothelial cell-selective adhesion molecule Proteins 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 102100036285 25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial Human genes 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 101000875403 Homo sapiens 25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial Proteins 0.000 description 1
- 101100489713 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND1 gene Proteins 0.000 description 1
- 101100489717 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND2 gene Proteins 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention provides a kind of alternative effect thickening thin oil deep profile correction method and system, and methods described includes step：The first step：Water injection well is cleaned with clear water；Second step：Prepare deep profile correction liquid；3rd step：By in the deep profile correction liquid injection water injection well of above-mentioned preparation；4th step：Deep profile correction liquid stops after note, when moisture content reaches more than 40% in profile control agent, and profile control agent viscosity increases sharply, and the purpose of deep profile correction is played in remote well area.This technology is a kind of execute-in-place simplicity, the transfer drive technology of alternative closure；By the way that thickening thin oil profile control agent is well mixed on ground, inject water injection well, profile control agent is contacted in the migration process of stratum with stratum water, viscosity gradually increases, predominant pathway, high permeability zone can be effectively blocked after into oil deposit deep part, make follow-up fluid diversion, expand sweep efficiency, and then improve oil recovery factor.
Description
Technical field
The present invention relates to geophysics field, oil recovery rate technology, more particularly to one are improved specifically by exploration
Plant the alternative effect thickening thin oil transfer drive method and system for oil field.
Background technology
During water flooding, due to the anisotropism on stratum, after injection water is broken through in oil well, cause channelling
With it is serious around flow phenomenon, sweep efficiency is low, and in waterflooding development interlayer, layer, horizontal contradiction protrudes so that produced liquid in oil well moisture content
Steeply rise, development effectiveness is deteriorated, not only influence waterflood efficiency, and Produced Liquid processing and the protection of gathering line are caused
Series of negative influences, and drastically influence development cost.To solve the above problems, transfer drive technology has been obtained extensively in oil field development
General attention and development.
Transfer drive technology is mainly change oil deposit deep part liquid flow path direction, expands swept volume, improves oil displacement efficiency.Domestic and international mesh
The profile control agent species of preceding application is a lot, including：A kind of viscoplasticity Weak Gels class (viscoelastic weak gel profile control agents of the such as Wang Hongguan
CN101712865A), foam class (agent of the foam profiles such as Li Zhaomin, oil displacement system and flooding method CN101314710), tune
The profile control agents such as agent microballoon class (week bright grade a kind of hud typed profile control agent microballoon profile control agent and preparation method CN102504793A) are driven,
But it there is following shortcoming or deficiency in applying at the scene：
(1) viscoplasticity Weak Gels class profile control agent gelation time is short, is easily formed and blocked near wellbore zone, it is impossible to reaches transfer drive
Purpose.Foam class profile control agent has that foaming is whard to control, foam under formation condition.Profile control agent microballoon class profile control agent is deposited
It is weak in transfer drive ability, it is not suitable for the limitation problems such as high hole, hypertonic reservoir.
(2) profile control agent of injection can not realize selective shut-off, i.e. water blockoff to oil-water-layer without stifled oil, but generally will
Oil-water-layer is blocked together, causes part potentiality oil reservoir can not start production.
(3) profile control agent injection stratum after can not recycling, if oil well produced, also need to take particular form to carry out
Processing, result in transfer drive financial cost and is remained high with running cost.
Therefore, develop and a kind of do not injure reservoir, the inexpensive transfer drive side with selective shut-off, recyclable recycling
Method, improves recovery ratio significant to water filling old filed.
The content of the invention
It is an object of the invention to provide a kind of alternative effect thickening thin oil transfer drive method and system for oil field,
It is a kind of execute-in-place simplicity, the transfer drive technology of alternative closure.By the way that thickening thin oil profile control agent is mixed on ground
It is even, water injection well is injected, profile control agent is contacted in the migration process of stratum with stratum water, and viscosity gradually increases, into after oil deposit deep part
Predominant pathway, high permeability zone can be effectively blocked, makes follow-up fluid diversion, expands sweep efficiency, and then improve oil recovery factor.
According to the first aspect of the present invention there is provided a kind of alternative effect thickening thin oil transfer drive method, it includes following
Step：
The first step：Water injection well is cleaned with clear water；
Second step：Prepare transfer drive liquid；
3rd step：By in the transfer drive liquid injection water injection well of above-mentioned preparation；
4th step：Transfer drive liquid stops after note, when moisture content reaches more than 40% in profile control agent, and profile control agent viscosity increases rapidly
Plus, play the purpose of transfer drive in remote well area.
Wherein, in the first step, in original annotation well waterflood injection rate, (waterflood injection rate is 50-80m to the injection rate of clear water3/d)
On the basis of increase by 10%, the increase on original annotation well injection pressure-based of injection pressure is no more than 5%.
In second step, it is less than 1%, viscosity to moisture content and is less than in 50mPa.s dewatered oil according to weight ratio successively
0.9% thickening agent, 0.1% auxiliary agent are added, remaining 99% composition is crude oil, is stirred 1 hour, is well mixed it, is configured to thick
Change thin oil profile control agent.
In the third step, injection mode is, (waterflood injection rate is in original annotation well waterflood injection rate for the injection rate of transfer drive liquid
50-80m3/ d) on the basis of reduce by 10%, injection rate is 0.01-0.05 times of reservoir pore space volume, when injection hydraulic coupling exceedes stratum
Reset pressure, stops injection transfer drive liquid.
In the 4th step, injection well recovers original annotation water, and according to original annotation water speed, (waterflood injection rate is 50-80m3/ d) start note
Water, with injection water contacted with thickened oil profile control agent, profile control agent is aqueous gradually to be increased, when in profile control agent moisture content reach 40% with
When upper, profile control agent viscosity is increased sharply, and the purpose of transfer drive is played in remote well area.
Wherein, the profile control agent in the present invention is made up of dehydration thin oil, thickening agent and auxiliary agent；The above method is opened suitable for water filling
Hair oil field is thickened thin oil transfer drive.
According to the second aspect of the present invention, the present invention provides a kind of for being thickened thin oil transfer drive system, optional to realize
Property effect thickening thin oil transfer drive method.The system mainly includes：Cementing truck (volume 50m3, belt stirrer), tri-plunger high pressure pump
(discharge capacity 3-5m3/ h, operating pressure 8-16MPa), frequency-variable controller (out-put supply frequency 25-400Hz, adjustable), Electromagnetic Flow
Count (measurement range 30：1), high pressure line (pressure-resistant 20MPa).
According to the third aspect of the present invention, the present invention provides a kind of alternative effect thickening thin oil transfer drive system, comes real
Existing alternative effect thickening thin oil transfer drive method.The system includes reciprocating pump, intelligence control system, automatic charging device, stirred
Mix tank and blind controller system；
Wherein, reciprocating pump is Double-cylinder single-acting reciprocating pump, and plunger motion speed is slow, and the shearing caused to profile control agent is very
Small, variable-frequency electric acc power is 75Kw, and discharge capacity can be controlled in 6-15m3/h, and maximum working pressure is up to 30MPa, complete machine matter
10t is measured, mounting means is skid-mounted type, be easy to resettlement.Further, since plunger motion speed is slow, wear and tear small, so the time between overhauls(TBO) is very
Long, the cycle of operation is average up to more than 60d；
(2) intelligence control system.Intelligence control system is by auto-control software, industrial computer, AD/DA analog-digital converters, logical
The composition such as card, flowmeter, pressure gauge, liquid level feedback system, wireless transport module is interrogated, is whole system " heart ", Suo Youqi
Its partial switch and regulating command, all by it by being sent after gathered data and analysis.Instantaneous delivery in work progress
Pressure and other parameters system interface is reached by wireless transmitting system, operating personnel can be directly read by intelligence control system and
Adjustment, is easy to workmen to grasp well head injection situation at any time；
(3) automatic charging device.Automatic charging device is by the profile control agent powder lifting of falling people hopper, and screw elevator will expect
The material that powder is delivered in tapered hopper, tapered hopper is mixed through screw feeder, venturi-type eductors, electrical ball valve, pigment
Head, is handled by powertrain system and delivers to solution agitator tank；
(4) agitator tank.Water injection agitator tank from water pot, the supplied materials with automatical feeding system is preliminary in pigment mixing head
Mixing, into tank in be sufficiently stirred for.It is furnished with ultrasonic level gage on agitator tank, liquid level can be in real time monitored, is believed
Number intelligence control system is reached, with alarm and automatic stopping function；
(5) blind controller system.It is made up of elements such as magnetic valve, frequency converter, multiple contactors, air switch, relays,
Complete equipment can realize it is chain automatically control and control manually, control liquid level, flow and can be in intelligent control system during pressure
Carry out, also can manually be carried out in instrument control room in system.
The present invention compared with prior art, has the following advantages that：
(1) thickening thin oil transfer drive method is different from gel-like transfer drive, can avoid due to plastic is too fast and only in nearly well
Band is played
Only viscosity just gradually increases after contact with water behind effect, profile control agent injection stratum, therefore is easier to migration
To earth formation deep, the distance for playing profile control effect is farther.
(2) there is thickening thin oil profile control agent chance water thickening, chance oil not to viscosify feature, dissolves each other, rises with underground crude oil in oil reservoir
To displacement effect；In water layer alternative closure water layer, flowable after pressurization, suggestions for improvement by a relatively large margin.
(3) application crude oil is as primary raw material, the raw material wide material sources in oil field, and good with oil reservoir compatibility, to reservoir
It is fanout free region, pollution-free.
(4) profile control agent main component be crude oil, injection stratum after, as oil field is continually developed, can also back production come out, carry out
Recycle, while Produced Liquid is not required to specially treated, significantly reduce financial cost.
Brief description of the drawings
Fig. 1 is the thickening thin oil transfer drive liquid system according to the present invention；
Fig. 2 is live profile control agent injection rate and pressure history；
Fig. 3 is live profile control agent control system schematic diagram；
Fig. 4 is the structured flowchart of the programmable control system in live profile control agent control system；
Fig. 5 is the electrical block diagram of the programmable control system in live profile control agent control system；
Fig. 6 is the storage chip circuit theory diagrams of the programmable control system in live profile control agent control system；
Fig. 7 is the magnetic coupling isolation circuit schematic diagram of the programmable control system in live profile control agent control system.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.Additionally, protection scope of the present invention should not be only limited to following
Concrete structure or part or design parameter.
Alternative effect thickening thin oil transfer drive technology is a kind of execute-in-place simplicity, the transfer drive skill of alternative closure
Art.Thickening thin oil profile control agent is well mixed on ground, water injection well is injected, profile control agent connects in the migration process of stratum with stratum water
Touch, viscosity gradually increases, into oil deposit deep part after can effectively block predominant pathway, high permeability zone, make follow-up fluid diversion, expand
Sweep efficiency, improves a kind of technology of oil recovery factor.
Profile control agent in the present invention is made up of dehydration thin oil, thickening agent and auxiliary agent, above-mentioned thick suitable for waterflooding oil field
Change thin oil transfer drive method as follows：
The first step：Clean water injection well with clear water, (waterflood injection rate is in original annotation well waterflood injection rate for the injection rate of clear water
50-80m3/ d) on the basis of increase by 10%, the increase on original annotation well injection pressure-based of injection pressure is no more than 5%.
Second step：Transfer drive liquid is prepared, being less than 1%, viscosity to moisture content is less than in 50mPa.s dewatered oil according to weight
Amount ratio sequentially adds 0.9% thickening agent, 0.1% auxiliary agent, and remaining 99% composition is crude oil, is stirred 1 hour, is well mixed it,
It is configured to be thickened thin oil profile control agent.
3rd step：By in the transfer drive liquid injection water injection well of above-mentioned preparation, injection mode is that the injection rate of transfer drive liquid is in original
(waterflood injection rate is 50-80m to water injection well waterflood injection rate3/ d) on the basis of reduce by 10%, injection rate is 0.01-0.05 times of reservoir pore space
Volume, when injection hydraulic coupling exceedes stratum reset pressure, stops injection transfer drive liquid.
4th step：Transfer drive liquid stops after note, and injection well recovers original annotation water, and according to original annotation water speed, (waterflood injection rate is 50-
80m3/ d) start water filling, as injection water is contacted with thickened oil profile control agent, profile control agent is aqueous gradually to be increased, when containing in profile control agent
When water rate reaches more than 40%, profile control agent viscosity is increased sharply, and the purpose of transfer drive is played in remote well area.
The present invention also aims to provide a kind of operating system for being used to be thickened thin oil transfer drive, to realize alternative work
With thickening thin oil transfer drive method.The system mainly includes：Cementing truck (volume 50m3, belt stirrer), tri-plunger high pressure pump (discharge capacity
3-5m3/ h, operating pressure 8-16MPa), frequency-variable controller (out-put supply frequency 25-400Hz, adjustable), electromagnetic flowmeter (survey
Measure scope 30：1), high pressure line (pressure-resistant 20MPa).
The present invention provides a kind of alternative effect thickening thin oil transfer drive system, to realize alternative effect thickening thin oil
Transfer drive method.The system includes reciprocating pump, intelligence control system, automatic charging device, agitator tank and blind controller system；
Wherein, reciprocating pump is Double-cylinder single-acting reciprocating pump, and plunger motion speed is slow, and the shearing caused to profile control agent is very
Small, variable-frequency electric acc power is 75Kw, and discharge capacity can be controlled in 6-15m3/h, and maximum working pressure is up to 30MPa, complete machine matter
10t is measured, mounting means is skid-mounted type, be easy to resettlement.Further, since plunger motion speed is slow, wear and tear small, so the time between overhauls(TBO) is very
Long, the cycle of operation is average up to more than 60d；
(2) intelligence control system.Intelligence control system is by auto-control software, industrial computer, AD/DA analog-digital converters, logical
The composition such as card, flowmeter, pressure gauge, liquid level feedback system, wireless transport module is interrogated, is whole system " heart ", Suo Youqi
Its partial switch and regulating command, all by it by being sent after gathered data and analysis.Instantaneous delivery in work progress
Pressure and other parameters system interface is reached by wireless transmitting system, operating personnel can be directly read by intelligence control system and
Adjustment, is easy to workmen to grasp well head injection situation at any time；
(3) automatic charging device.Automatic charging device is by the profile control agent powder lifting of falling people hopper, and screw elevator will expect
The material that powder is delivered in tapered hopper, tapered hopper is mixed through screw feeder, venturi-type eductors, electrical ball valve, pigment
Head, is handled by powertrain system and delivers to solution agitator tank；
(4) agitator tank.Water injection agitator tank from water pot, the supplied materials with automatical feeding system is preliminary in pigment mixing head
Mixing, into tank in be sufficiently stirred for.It is furnished with ultrasonic level gage on agitator tank, liquid level can be in real time monitored, is believed
Number intelligence control system is reached, with alarm and automatic stopping function；
(5) blind controller system.It is made up of elements such as magnetic valve, frequency converter, multiple contactors, air switch, relays,
Complete equipment can realize it is chain automatically control and control manually, control liquid level, flow and can be in intelligent control system during pressure
Carry out, also can manually be carried out in instrument control room in system.
Dispensing control system (the control system therein used with above-mentioned alternative effect thickening thin oil transfer drive system support
System part is as shown in Figure 3) by high-pressure water inlet piping, polymer feed device, crosslinking agent feed arrangement and automatic control system
Several major is constituted, control system part as shown in Figure 3 include programmable control system, electromagnetic flowmeter, feeding screw,
Frequency converter, measuring pump and electric control valve.Hand stop valve, electric control valve, electromagnetism are mounted with high-pressure water inlet pipeline successively
Flowmeter and ejector, when High-Pressure Water is through ejector, the negative pressure of generation can inhale crosslinking agent liquid or polymer dry powder
In oral siphon road, add in profile control agent tank.Agitator is installed in profile control agent tank, can make to be sufficiently mixed into water and medicament.Work as tank
When interior liquid level reaches preset value, automatic program is out of service, and motor-driven valve is closed automatically, and profile control agent prepares completion automatically.It is poly-
Stuff level switch is installed, discharge outlet installs blanking switch and feeding screw, feed on the polymer storage tank of compound feed arrangement
When polymer fall into hopper, thereon equipped with stuff level switch, and be connected by flexible pipe with the ejector on inlet pipeline.Spiral is fed
Control cabinet is wired at motor, frequency converter and the stuff level switch of device.Crosslinking agent feed arrangement is pacified on crosslinking agent storage tank
Liquid-level switch has been filled, hand-operated valve is housed in exit, measuring pump is subsequently connected to.Crosslinking agent falls into hopper during charging, and hopper leads to
Flexible pipe is crossed with the ejector on inlet pipeline to be connected.Control cabinet is wired at measuring pump and liquid-level switch.Automatic control system
By human and machine interface unit, central control unit and detection unit composition are real to water inlet electric control valve by detecting flow of inlet water
PID regulations are applied, hand control box is carried out and automatically controls two ways, according to technological requirement, with crosslinking agent and polymer controls shape
Into chain control, automatically controlling for whole system is completed.Wherein, the keying and regulation of the controllable pipeline of electric control valve are entered
The size of water-carrying capacity；The instantaneous delivery and accumulative liquid inlet volume of water inlet can be obtained by electromagnetic flowmeter；High-Pressure Water is through ejector
When, negative pressure can be produced and suck medicament in profile control agent tank.Polymer feed device it is main by polymer storage tank, feeding screw and
Dry powder hopper is constituted.The stuff level switch installed on storage tank can realize material low alarm function.The keying of feeding screw is by controlling
Processing procedure sequence is automatically controlled according to inflow and feed time, can be adjusted speed of screw shaft by frequency converter and be changed feeding quantity.Feed
When polymer fall into dry powder hopper, hopper is inhaled polymer under suction function with the ejector on inlet pipeline by flexible pipe
Enter.Crosslinking agent feed arrangement is made up of crosslinking agent storage tank, measuring pump and crosslinking agent hopper.Liquid-level switch realizes liquid level low alarm
Function.The keying of measuring pump is automatically controlled by control program according to inflow and feed time, and its feed speed is adjustable.During charging
Crosslinking agent falls into hopper, and hopper is sucked crosslinking agent under suction function with the ejector on inlet pipeline by flexible pipe.
As shown in figs. 4-7, further the programmable control system in live profile control agent control system in the present invention is carried out
Describe in detail；Fig. 4 is the structured flowchart of the programmable control system in live profile control agent control system；Fig. 5 is live profile control agent
The electrical block diagram of programmable control system in control system；Fig. 6 is programmable in live profile control agent control system
The storage chip circuit theory diagrams of control system；Fig. 7 is the magnetic coupling of the programmable control system in live profile control agent control system
Isolation circuit schematic diagram.
Refer to the attached drawing 4, show in particular the structured flowchart of the programmable control system in live profile control agent control system, existing
Programmable control system in the profile control agent control system of field includes：Power circuit, voltage sampling circuit, current sampling circuit, meter
Measure chip circuit, storage circuit, control circuit, liquid crystal display, infrared communication module, 485 communication modules, carrier communication mould
Block, ESAM security modules and microprocessor.Power circuit is that modules circuit is powered；Voltage sampling circuit and current sample electricity
Road is input to the collection port of computation chip circuit；Computation chip circuit be used for control signal metering and by spi bus with
Microprocessor communication；Storage circuit is by I2C buses and microprocessor communication, for storage control signal；Microprocessor according to
Control signal output safety indication signal；Liquid crystal display shows safe indication signal, power, voltage, current information；It is infrared
Communication module, 485 communication modules, carrier communication module pass through UART mouthfuls and microprocessor communication；ESAM modules add control
The security of signal processed, only can just change the data of write control circuit by authentication.
Refer to the attached drawing 5, the circuit structure for further providing the programmable control system in live profile control agent control system shows
It is intended to, storage chip is under microprocessor I/O pin powereds, default conditions, I/O pins output low level, storage chip not work
Work, not power consumption, only during access data in need, microprocessor just controls I/O pins to export high level, is that storage chip is powered,
Storage chip exchanges data by I2C buses with microprocessor；The communication modules such as RS485, carrier wave are by the isolation connection of magnetic coupling
The UART mouths of microprocessor；The terminations of photo resistance R1 mono- power end, photo resistance R1 other end connection resistance R2 and microprocessor
The AD interfaces of device；Resistance R2 mono- terminates AD interfaces, the resistance R2 other end earth terminal of photo resistance and microprocessor.
Refer to the attached drawing 6, further provides the storage chip electricity of the programmable control system in live profile control agent control system
Road schematic diagram, the storage chip U1 equal earth terminal of A0, A1, A2 and VSS, storage chip U1 VCC ports connect the logical of microprocessor
Microprocessor is connect with I/O interface CPU_I/O ends, storage chip U1 WP ports earth terminal, storage chip U1 SCL ports
I2C interface CPU_SCL ends, storage chip U1 SDA ports connect the I2C interface CPU_SDA ends of microprocessor；Electric capacity C1 is in parallel
Between storage chip U1 VCC ports and WP ports；Resistance R2 be connected in parallel on storage chip U1 VCC ports and SCL ports it
Between；Resistance R2 is connected in parallel between storage chip U1 VCC ports and SDA ports.
Refer to the attached drawing 7, further provides the magnetic coupling isolation electricity of the programmable control system in live profile control agent control system
Road schematic diagram, magnetic lotus root isolating chip U2 VIA/VOA ports connect data receiver RX, V1B ports connection letter mould of communication module
The data that data sending terminal TX, GND1 termination communication module power supply ground terminal of block, VOA/VIA ports connect microprocessor are sent to
Data receiver CPU_RX, GND2 ports that CPU_TX, VOB port connect microprocessor connect power supply of microprocessor ground terminal；Electric capacity C2
Communication module power end VCCM and magnetic lotus root isolating chip U2 VDD1 ports are connected on resistance R4；Electric capacity C3 and resistance R5 are equal
It is connected on power supply of microprocessor end VCC and magnetic lotus root isolating chip U2 VDD2 ports.
By embodiment, the present invention is described in detail further below.
Embodiment 1：It is thickened thin oil transfer drive liquid process for preparation
Transfer drive liquid by according to weight than dehydration thin oil 99%, thickening agent 0.9%, auxiliary agent 0.1%, in normal temperature Agitation Tank
1h is stirred with 100r/min mixing speed, obtains uniformly being thickened thin oil transfer drive liquid.
Embodiment 2：It is thickened thin oil transfer drive liquid implant operation system flow chart
In thickening thin oil transfer drive liquid injection process, transfer drive liquid is prepared according to embodiment 1 in cementing truck tank, prepares and completes
Afterwards, transfer drive liquid is squeezed into stratum through sleeve valve from oil jacket annular space by three plunger high head injection pumps.
1- cementing trucks in Fig. 1；2- frequency-variable controllers；3- tri-plunger high pressure pumps；4- electromagnetic flowmeters；5- tubing valves；6-
Sleeve valve；7- tubing gauges.
Embodiment 3：Live confidentiality has been carried out in Liaohe River Huan Xi oil fields to test and achieve satisfied effect
Nearly 40 years waterflooding extractions are passed through in Liaohe River Huan Xi oil fields, have been enter into development late stage at present, well water 90% with
On, day oil-producing be less than 1.5 tons, problem is not all solved by gel profile control several times；Using the technology of the present invention, we are to joyous west
Certain well has carried out thickening thin oil transfer drive, and effect is notable.
Joyous certain well basic data of west：
Reservoir interpretation table
Joyous western oil field well, produces the side of liquid 53.7 daily, day 1.1 tons of oil-producing, aqueous 98%.Oil well High water cut, determines that development is thick
Change thin oil transfer drive.Design 130 sides of injection, are actually implanted into 130 sides, injection process pressure history is shown in Fig. 2.Profile control agent terminates note
After entering, profile control agent is replaced to oil reservoir deep, closing well 1 day with the side of return water 50.
After driving a well, produce the side of liquid 38.9 daily, day 10.5 tons of oil-producing, aqueous 73.0%, tire out and increase 1126 tons of oil, the side of precipitation 2670,
Effect is obvious.Add up to implement 15 wells at present, added up to increase 10890 tons of oil.
The present invention compared with prior art, has the following advantages that：
(1) thickening thin oil transfer drive method is different from gel-like transfer drive, can avoid due to plastic is too fast and only in nearly well
Band is played
Only viscosity just gradually increases after contact with water behind effect, profile control agent injection stratum, therefore is easier to migration
To earth formation deep, the distance for playing profile control effect is farther.
(2) there is thickening thin oil profile control agent chance water thickening, chance oil not to viscosify feature, dissolves each other, rises with underground crude oil in oil reservoir
To displacement effect；In water layer alternative closure water layer, flowable after pressurization, suggestions for improvement by a relatively large margin.
(3) application crude oil is as primary raw material, the raw material wide material sources in oil field, and good with oil reservoir compatibility, to reservoir
It is fanout free region, pollution-free.
(4) profile control agent main component be crude oil, injection stratum after, as oil field is continually developed, can also back production come out, carry out
Recycle, while Produced Liquid is not required to specially treated, significantly reduce financial cost.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Those skilled in the art is appreciated that without departing substantially from appended right
It is required that in the case of the spirit and scope of the present invention of definition, various modifications can be made in form and details.
Claims (1)
1. a kind of alternative effect thickening thin oil transfer drive method, it is well mixed by will be thickened thin oil profile control agent on ground,
Inject water injection well, profile control agent contacts in the migration process of stratum with stratum water, viscosity gradually increases, into oil deposit deep part after can have
Effect closure predominant pathway, high permeability zone, make follow-up fluid diversion, expand sweep efficiency, and then improve oil recovery factor；
It comprises the following steps：
The first step：Water injection well is cleaned with clear water；
Second step：Prepare transfer drive liquid；
3rd step：By in the transfer drive liquid injection water injection well of above-mentioned preparation；
4th step：Transfer drive liquid stops after note, when moisture content reaches more than 40% in profile control agent, and profile control agent viscosity increases sharply,
Remote well area plays the purpose of transfer drive；
Wherein, in the first step, the injection rate of clear water is in original annotation well waterflood injection rate 50-80m3Increase by 10%, note on the basis of/d
Enter pressure increase on original annotation well injection pressure-based and be no more than 5%；In second step, it is less than 1%, viscosity to moisture content small
0.9% thickening agent, 0.1% auxiliary agent are sequentially added according to weight ratio in 50mPa.s dewatered oil, remaining 99% composition is original
Oil, is stirred 1 hour, is well mixed it, is configured to be thickened thin oil profile control agent；In the third step, injection mode is, transfer drive liquid
Injection rate is in original annotation well waterflood injection rate 50-80m310% is reduced on the basis of/d, injection rate is 0.01-0.05 times of reservoir pore space
Volume, when injection hydraulic coupling exceedes stratum reset pressure, stops injection transfer drive liquid；In the 4th step, injection well recovers original annotation water,
According to original annotation water speed 50-80m3/ d starts water filling, and as injection water is contacted with thickened oil profile control agent, profile control agent is aqueous gradually to be increased
Plus, when moisture content reaches more than 40% in profile control agent, profile control agent viscosity is increased sharply, and the mesh of transfer drive is played in remote well area
's；
Wherein profile control agent is made up of dehydration thin oil, thickening agent and auxiliary agent；The alternative effect thickening thin oil transfer drive method is fitted
Thin oil transfer drive is thickened for waterflooding oil field；
The alternative effect thickening thin oil transfer drive method is thickened thin oil transfer drive system to realize by alternative effect, should
System includes reciprocating pump, intelligence control system, automatic charging device, agitator tank and blind controller system；Wherein, reciprocating pump is double
Cylinder single-acting reciprocating pump, variable-frequency electric acc power is 75Kw, and discharge capacity is controlled in 6-15m3/h, and maximum working pressure is reachable
30MPa, overall mass 10t, mounting means is skid-mounted type, is easy to resettlement；Intelligence control system is by auto-control software, industry control
Machine, AD/DA analog-digital converters, address card, flowmeter, pressure gauge, liquid level feedback system, wireless transport module composition；Constructed
The pressure parameter of instantaneous delivery in journey reaches system interface by wireless transmitting system, and operating personnel can pass through intelligent control system
System directly reads and adjusted, and is easy to workmen to grasp well head injection situation at any time；Automatic charging device falls profile control agent powder
In people's lifting hopper, feed powder is delivered to material in tapered hopper, tapered hopper through screw feeder, Wen Qiu by screw elevator
In injector, electrical ball valve, pigment mixing head, handled by powertrain system and deliver to solution agitator tank；Water note from water pot
Enter agitator tank, tentatively mixed in pigment mixing head with the supplied materials of automatical feeding system, into tank in be sufficiently stirred for；Match somebody with somebody on agitator tank
There is ultrasonic level gage, liquid level can in real time be monitored, signal reaches intelligence control system, with alarm and automatically
Parking function；It is a whole set of optional by magnetic valve, frequency converter, multiple contactors, air switch, relay group into blind controller system
Selecting property effect thickening thin oil transfer drive system can realize it is chain automatically control and control manually, control liquid level, flow and during pressure
It can carry out, also can manually be carried out in instrument control room in intelligence control system；
The dispensing control system used with alternative effect thickening thin oil transfer drive system support is by high-pressure water inlet piping, polymer
Feed arrangement, crosslinking agent feed arrangement and automatic control system are constituted, and control system part includes programmable control system, electricity
Magnetic flowmeter, feeding screw, frequency converter, measuring pump and electric control valve；It is mounted with to cut manually successively on high-pressure water inlet pipeline
Only valve, electric control valve, electromagnetic flowmeter and ejector, when High-Pressure Water is through ejector, the negative pressure of generation can be by crosslinking agent
In liquid or polymer dry powder suction water lines, add in profile control agent tank；Agitator is installed in profile control agent tank, can be made into water
It is sufficiently mixed with medicament；When liquid level reaches preset value in tank, automatic program is out of service, and motor-driven valve is closed automatically, adjusts
Drive agent and prepare completion automatically；Stuff level switch is installed, discharge outlet is installed blanking and opened on the polymer storage tank of polymer feed device
Close and feeding screw, polymer falls into hopper during feed, thereon equipped with stuff level switch, and by flexible pipe and inlet pipeline
Ejector is connected；Control cabinet is wired at motor, frequency converter and the stuff level switch of feeding screw；Crosslinking agent charging dress
Put and be mounted with liquid-level switch on crosslinking agent storage tank, hand-operated valve is housed in exit, measuring pump is subsequently connected to；It is crosslinked during charging
Agent falls into hopper, and hopper is connected by flexible pipe with the ejector on inlet pipeline；Control is wired at measuring pump and liquid-level switch
Case processed；Automatic control system is by human and machine interface unit, central control unit and detection unit composition, by detecting flow of inlet water,
PID regulations are implemented to water inlet electric control valve, carries out hand control box and automatically controls two ways, according to technological requirement, with friendship
Connection agent and polymer controls form chain control, complete automatically controlling for whole system；Wherein electric control valve can control
The keying of pipeline and the size for adjusting flow of inlet water；The instantaneous delivery and accumulative feed liquor of water inlet can be obtained by electromagnetic flowmeter
Amount；When High-Pressure Water is through ejector, negative pressure can be produced and suck medicament in profile control agent tank；Polymer feed device is main by polymerizeing
Thing storage tank, feeding screw and dry powder hopper composition；The stuff level switch installed on storage tank can realize material low alarm function；Spiral shell
The keying of precession glassware is automatically controlled by control program according to inflow and feed time, can be adjusted helical axis by frequency converter and be turned
Speed changes feeding quantity；Polymer falls into dry powder hopper during feed, and hopper is by the ejector on flexible pipe and inlet pipeline in negative pressure
Polymer is sucked under effect；Crosslinking agent feed arrangement is made up of crosslinking agent storage tank, measuring pump and crosslinking agent hopper；Liquid-level switch
Realize liquid level low alarm function；The keying of measuring pump is automatically controlled by control program according to inflow and feed time, and it enters
Liquid speed degree is adjustable；Crosslinking agent falls into hopper during charging, and hopper is by the ejector on flexible pipe and inlet pipeline under suction function
Crosslinking agent is sucked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111988.3A CN104806195B (en) | 2015-03-14 | 2015-03-14 | A kind of alternative effect thickening thin oil transfer drive method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111988.3A CN104806195B (en) | 2015-03-14 | 2015-03-14 | A kind of alternative effect thickening thin oil transfer drive method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104806195A CN104806195A (en) | 2015-07-29 |
| CN104806195B true CN104806195B (en) | 2017-07-28 |
Family
ID=53691348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510111988.3A Active CN104806195B (en) | 2015-03-14 | 2015-03-14 | A kind of alternative effect thickening thin oil transfer drive method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806195B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298438B (en) * | 2015-10-23 | 2017-12-22 | 克拉玛依新科澳石油天然气技术股份有限公司 | More fine profile control methods in round polymer gel deep |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076361A (en) * | 1990-09-07 | 1991-12-31 | Texaco Inc. | Gel method for decreasing permeability around a wellbore |
| CN101003727A (en) * | 2006-06-27 | 2007-07-25 | 中国石化股份胜利油田分公司孤岛采油厂 | Preparing shift drive agent of self cross-linked polymer, and application method |
| CN101003726A (en) * | 2006-06-27 | 2007-07-25 | 中国石化股份胜利油田分公司孤岛采油厂 | Method for preparing and using shift drive agent of reversed phase latex of polyacrylamide |
| CN101012744A (en) * | 2006-10-30 | 2007-08-08 | 大庆油田有限责任公司 | Nitrogen foam adjusting-actuating segment plug injection technique |
| CN102604605A (en) * | 2012-02-07 | 2012-07-25 | 大庆鼎奥油田科技有限公司 | Inorganic salt dual fluid profile control agent and profile control method thereof |
-
2015
- 2015-03-14 CN CN201510111988.3A patent/CN104806195B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076361A (en) * | 1990-09-07 | 1991-12-31 | Texaco Inc. | Gel method for decreasing permeability around a wellbore |
| CN101003727A (en) * | 2006-06-27 | 2007-07-25 | 中国石化股份胜利油田分公司孤岛采油厂 | Preparing shift drive agent of self cross-linked polymer, and application method |
| CN101003726A (en) * | 2006-06-27 | 2007-07-25 | 中国石化股份胜利油田分公司孤岛采油厂 | Method for preparing and using shift drive agent of reversed phase latex of polyacrylamide |
| CN101012744A (en) * | 2006-10-30 | 2007-08-08 | 大庆油田有限责任公司 | Nitrogen foam adjusting-actuating segment plug injection technique |
| CN102604605A (en) * | 2012-02-07 | 2012-07-25 | 大庆鼎奥油田科技有限公司 | Inorganic salt dual fluid profile control agent and profile control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104806195A (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102423655B (en) | Large-flow fracturing fluid preparation system and method | |
| CN201223776Y (en) | Polymer dispersion and fusion device | |
| CN202398329U (en) | Large-traffic sled dress formula of fracturing fluid joins in marriage liquid device | |
| CN204984386U (en) | Automatic water mixing charge device of oil -water well | |
| CN107939342A (en) | A kind of water injection well stimulation device and construction method | |
| CN104265240A (en) | Added water diluting electric wellhead dosing process | |
| CN204532297U (en) | A kind of oil-field water injection device | |
| CN104806195B (en) | A kind of alternative effect thickening thin oil transfer drive method and system | |
| CN206158715U (en) | Viscous crude thinner evaluation device | |
| CN201013309Y (en) | Down-hole piezo-electric control switch for water finding and blocking of oil layer | |
| CN104712289B (en) | One kind is used for oil well thin oil and is thickened shutoff method and system | |
| CN203842550U (en) | Automatic mixing control system of oil well binary compound displacement agent | |
| CN205827208U (en) | A kind of water filling integral automation frequency-changing control system | |
| CN204627528U (en) | A kind of for oil well thin oil multiviscosisty water blockoff system | |
| CN104775799B (en) | Profile control method and system for thickening well thin oil | |
| CN201804242U (en) | PLC automatic control system for drilling fluid | |
| CN204627571U (en) | A kind of for well thin oil multiviscosisty profile control system | |
| CN204627529U (en) | A kind of alternative effect multiviscosisty thin oil transfer drive system | |
| CN208203231U (en) | A kind of sledge formula produced sludge device | |
| CN107654214A (en) | A kind of oil well casing automatic medicine adding apparatus and its application method | |
| CN207776837U (en) | A kind of water injection well stimulation device | |
| CN208757474U (en) | A kind of dispensation apparatus of profile control transfer drive medicament | |
| CN209556984U (en) | A kind of novel wellhead quantitative remedy-adding system | |
| CN103809634B (en) | Water-bearing structure conducting water flow control device and method of work thereof | |
| CN207795202U (en) | Automatic medicine adding apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201116 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: PetroChina Company Limited Address before: 124010 Experimental Technology Research Institute of Liaohe oilfield exploration and development, Xinglongtai District, Panjin, Liaoning Patentee before: Xiao Chuanmin |
|
| TR01 | Transfer of patent right |