CN103806909B - Oil reservoir passage equivalence Size Measuring System and oil reservoir path control method - Google Patents
Oil reservoir passage equivalence Size Measuring System and oil reservoir path control method Download PDFInfo
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Abstract
The present invention relates to oil-gas field development field, more particularly to a kind of oil reservoir passage equivalence Size Measuring System and oil reservoir path control method.Measuring system includes water injection well, producing well, data processor, range sensor, fluid injection gauge table and discharge opeing gauge table；Fluid injection gauge table is arranged on water injection well, and discharge opeing gauge table is arranged on producing well；Range sensor is arranged on water injection well or producing well, for measuring the distance between water injection well and producing well；Data processor is connected with range sensor, fluid injection gauge table and discharge opeing gauge table respectively.The present invention draws the volume of oil reservoir passage by gathering reservoir quantity and Discharge rate；The effective length of oil reservoir passage is drawn by the tortuosity of the distance between water injection well and producing well and oil reservoir passage；The equivalent radius of oil reservoir passage is drawn by the volume of oil reservoir passage and the effective length of oil reservoir passage again, so as to directly select out suitable blocking agent, so as to reduce cost, improves efficiency.
Description
Technical field
The present invention relates to oil-gas field development field, in particular to a kind of oil reservoir passage equivalence Size Measuring System and
Oil reservoir path control method.
Background technology
In oilfield exploitation procedure, generally require to carry out the control operation of oil reservoir path, i.e., by oil gas circulation path
It is controlled, petroleum resources can be flowed according to the path of design, injection water swept volume is improved, so as to reach raising oil gas
The purpose of yield and oil and gas gathering efficiency.
In oil reservoir path control operation traditional at present, blocking agent is transported to needs by well-digging and blocked by a kind of method
Path, by blocking agent by blocked path so that fairway changes.
But when using blocking agent, due to the size for the path for needing to block can not be predicted in advance, therefore using how many stifled
Agent, all it is difficult to determine using what kind of blocking agent.
Therefore, all it is that by the way of experiment make repeated attempts a variety of different agent in current oil reservoir path control
Amount, different types of plugging agents in combination are implemented to block, and efficiency is very low, cost is very high.
The content of the invention
It is above-mentioned to solve the problems, such as it is an object of the invention to provide a kind of oil reservoir passage equivalence Size Measuring System.
A kind of oil reservoir passage equivalence Size Measuring System is provided in an embodiment of the present invention, and it includes data processing
Device, range sensor and fluid injection gauge table；
Fluid injection gauge table is arranged on water injection well；
Range sensor is arranged on water injection well or producing well, for measuring the distance between water injection well and producing well；
Data processor is connected with range sensor and fluid injection gauge table respectively.
Further, water injection well on producing well with being provided with sample examination device.
Further, discharge opeing gauge table is additionally provided with water injection well.
Further, fluid injection gauge table and/or discharge opeing gauge table are electromagnetic flowmeter.
Present invention also offers a kind of oil reservoir path control method, comprise the following steps：
Water injection well discharge opeing；
Discharge opeing volume V is obtained by the discharge opeing gauge table being arranged on water injection wellD；
The fluid injection into water injection well；
Liquid is adopted from producing well；
Fluid injection volume V is obtained by the fluid injection gauge table being arranged on water injection wellI, by being arranged on water injection well or producing well
On range sensor obtain the distance between water injection well and producing well L；
The tortuosity τ of the oil reservoir passage obtained according to advance measurement, and the distance between water injection well and producing well L, are obtained
Go out the effective length L of oil reservoir passagee；
According to fluid injection volume VIWith discharge opeing volume VDDetermine the volume V of oil reservoir passageΦ；
According to the effective length L of oil reservoir passageeWith the volume V of oil reservoir passageΦDraw the equivalent radius r of oil reservoir passage；
According to the effective length L of oil reservoir passagee, oil reservoir passage volume VΦDetermined with the equivalent radius r of oil reservoir passage stifled
The type and dosage of agent；
Blocking agent is configured according to the blocking agent type and dosage of determination；
The blocking agent configured is transported in oil reservoir passage.
Further, the effective length L of oil reservoir passageeObtained using below equation：
Le=L/τ。
Further, after adopting liquid from producing well；Fluid injection body is obtained by the fluid injection gauge table being arranged on water injection well
Product VI, before obtaining the distance between water injection well and producing well L by the range sensor being arranged on water injection well or producing well,
This method further comprises：
The liquid that the liquid and producing well injected to water injection well is produced is sampled chemical examination respectively；
If result of laboratory test is identical for the liquid of injection and the ion concentration and composition of the liquid of corresponding producing well extraction, hold
Row obtains fluid injection volume VIThe step of with the distance between water injection well and producing well L；
Otherwise, sample examination again after preset time is waited, until the liquid of injection and the liquid of corresponding producing well extraction
Ion concentration and composition it is identical after, perform and obtain fluid injection volume VIWith the distance between water injection well and the producing well L step
Suddenly.
Further, the volume V of oil reservoir passageΦUse below equation obtain：
Vφ=VI-VD。
Further, fluid injection is water filling, the ion concentration and composition of the water that the content of sample examination is injected by water injection well
The ion concentration and composition of the water produced with producing well.
Oil reservoir passage equivalence Size Measuring System of the present invention and oil reservoir path control method, by gathering reservoir quantity and adopting liquid
Measure out the volume of oil reservoir passage；Show that oil reservoir leads to by the tortuosity of the distance between water injection well and producing well and oil reservoir passage
The effective length in road；The equivalent radius of oil reservoir passage is drawn by the volume of oil reservoir passage and the effective length of oil reservoir passage again,
For reservoir geological modeling and suitable blocking agent can be selected to provide strong foundation, it is suitable stifled so as to directly select out
Agent, so as to reduce cost, improve efficiency.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is oil reservoir passage equivalence Size Measuring System structural representation of the embodiment of the present invention；
Fig. 2 is water injection well blowdown period schematic diagram；
Fig. 3 water injection well fluid injection stage schematic diagrames；
Fig. 4 is that producing well adopts liquid stage schematic diagram；
Fig. 5 is the inventive method flow chart.
In figure, 1：Range sensor；2：Fluid injection gauge table；3：Water injection well；4：Producing well；5：The measure of production table；6：Data
Processor；7：Discharge opeing gauge table.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Clear, complete description.Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art institute resulting on the premise of creative work is not made
There are other embodiments, belong to the scope that the present invention is protected.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As shown in figure 1, the invention provides a kind of oil reservoir passage equivalence Size Measuring System, it include data processor 6,
Range sensor 1 and fluid injection gauge table 2；
Fluid injection gauge table 2 is arranged on water injection well 3；
Range sensor 1 is arranged on water injection well 3 or producing well 4, for measure between water injection well 3 and producing well 4 away from
From；
Data processor 6 is connected with range sensor 1 and fluid injection gauge table 2 respectively.
System first passes through range sensor 1 and fluid injection gauge table 2 gathers the fluid injection volume V of water injection well 3IWith the He of water injection well 3
The distance between producing well 4 L, and it is transmitted across data processor 6, after data processor 6 receives data, it is possible to carry out
Calculate and obtain a result.
Further, water injection well 3 is provided with sample examination device with producing well 4.
Sample examination device is respectively provided with water injection well 3 and producing well 4, is so assured that what water injection well 3 was injected
Whether liquid reaches producing well 4.When water injection well 3 and producing well 4 to sample examination result it is identical, liquid that water injection well 3 injects
Body reaches producing well 4, and the liquid phase that the liquid and water injection well 3 that producing well 4 gathers inject is same, as a result accurately；When water injection well 3 and adopt
Oil well 4 to sample examination result differ, the liquid that water injection well 3 injects does not reach producing well 4, the liquid that producing well 4 gathers
The liquid that body and water injection well 3 inject differs, as a result inaccurate, need to continue to exploit.
Further, it is provided with check valve between sample examination device and water injection well 3；
And/or
Check valve is provided between sample examination device and producing well 4.
Check valve is set between sample examination device and water injection well 3 and producing well 4, can effectively prevent water injection well 3
Omit with the water of producing well 4, so as to cause detection inaccurate, further the result of calculation of system is impacted.
Further, discharge opeing gauge table 7 is additionally provided with water injection well 3.
Before water injection well 3 starts fluid injection, discharge opeing first can be carried out to oil reservoir passage, oil reservoir passage can just be noted afterwards
Water.
Now, if not carrying out quantitative statisticses to discharge opeing, the measurement of final oil reservoir channel volume can be caused very
Big error, therefore, it is necessary to be the oil reservoir deficit volume V before fluid injection by the volume of discharge opeing before fluid injectionDMeasured.
Further, data processor 6 includes data acquisition module and data processing module；
Data acquisition module is used to gathering the data of range sensor 1, fluid injection gauge table 2 and discharge opeing gauge table 7, and by it
It is transferred to data processing module；
Data processing module receives the data of data acquisition module, and by it handle after draw the results of needs.
Data processor 6 includes acquisition module and data processing module, but is not limited to the two modules, and it can also be wrapped
Containing other modules, such as image display, data input module, control module.
Further, fluid injection gauge table 2 and/or discharge opeing gauge table 7 are electromagnetic flowmeter.
Electromagnetic flowmeter is the new stream developed rapidly with the development of electronic technology 50~sixties of 20th century
Measurement instrument.Electromagnetic flowmeter is to be used for conducting medium volume flow in measurement pipe according to what Faraday's electromagnetic induction law manufactured
The Ferraris instrument of amount.
The advantages of electromagnetic flowmeter is that crushing is minimum, and measurable flow amount scope is big.The ratio one of maximum stream flow and minimum discharge
As be 20：More than 1, applicable industrial caliber scope is wide, and maximum up to 3m, output signal and measured flux are linear, accuracy
It is higher, the μ s/cm of measurable electrical conductivity >=5 acid, alkali, salting liquid, water, sewage, corrosive liquids and mud, ore pulp, paper pulp
Deng fluid flow.But it can not measure the flow of gas, steam and pure water.
For these reasons, flowmeter when the present embodiment uses electromagnetic flowmeter as water filling and when recovering the oil.
As shown in figure 5, invention also improves a kind of oil reservoir passage oil reservoir path control method, comprise the following steps：
The discharge opeing of water injection well 3；
Discharge opeing volume V is obtained by the discharge opeing gauge table 7 being arranged on water injection well 3D；
The fluid injection into water injection well 3；
Liquid is adopted from producing well 4；
Fluid injection volume V is obtained by the fluid injection gauge table 2 being arranged on water injection well 3I, by being arranged on water injection well 3 or adopting
Range sensor 1 on oil well 4 obtains the distance between water injection well 3 and producing well 4 L；
The tortuosity τ of the oil reservoir passage obtained according to advance measurement, and the distance between water injection well 3 and producing well 4 L,
Draw the effective length L of oil reservoir passagee；
According to fluid injection volume VIWith discharge opeing volume VDDetermine the volume V of oil reservoir passageΦ；
According to the effective length L of oil reservoir passageeWith the volume V of oil reservoir passageΦDraw the equivalent radius r of oil reservoir passage；
According to the effective length L of oil reservoir passagee, oil reservoir passage volume VΦDetermined with the equivalent radius r of oil reservoir passage stifled
The type and dosage of agent；
Blocking agent is configured according to the blocking agent type and dosage of determination；
The blocking agent configured is transported in oil reservoir passage.
Before water injection well 3 starts water filling, discharge opeing can be first carried out to water injection well 3.Therefore, the volume for the fluid discharged before fluid injection
The injection liquid that can be injected into fluid injection is filled up, and this part is oil reservoir deficit volume V before fluid injectionD。
The tortuous angle value τ of Carbonate Reservoir is drawn according to tortuosity result of the test, passes through tortuous angle value τ and Distance-sensing
The distance L that device 1 measures draws the effective length L of oil reservoir passagee；The injection liquid measured according to fluid injection gauge table 2 accumulates VI, draw
The volume V of oil reservoir passageΦ；Pass through the effective length L of oil reservoir passageeWith volume VΦThe equivalent radius r of oil reservoir passage can be drawn,
So as to the effective length L according to oil reservoir passagee, volume VΦThese data may be selected by effective blocking agent with equivalent radius r, from
And reach optimal water plugging effect.
The blocking agent type and plug agent amount chosen with postponing, by oil reservoir passage plugging, complete water blockoff, make injection water
Turn to, reach adjustment intake profile, improve injection water swept volume, improve the purpose of recovery ratio.
Further, the effective length L of oil reservoir passageeObtained using below equation：
Le=L/τ。
Big passage macro length between water injection well 3 and producing well 4 is the distance L and oil reservoir that range sensor 1 measures
The effective length L of oil reservoir passage of the ratio between water injection well 3 and producing well 4 between the tortuosity τ of passagee, and oil reservoir leads to
The tortuosity in road can be drawn by experiment.
Further, after adopting liquid from producing well 4；2 tables are measured by the fluid injection being arranged on water injection well 3 and obtain fluid injection
Volume VI, obtained by the discharge opeing gauge table 7 being arranged on producing well 4 and adopt liquid product VD, by being arranged on water injection well 3 or recovering the oil
Before range sensor 1 on well 4 obtains the distance between water injection well 3 and producing well 4 L, this method further comprises：
The liquid that the liquid and producing well 4 injected to water injection well 3 is produced is sampled chemical examination respectively；
If result of laboratory test is identical for the liquid of injection and the ion concentration and composition of the liquid of the corresponding extraction of producing well 4,
Perform and obtain fluid injection volume VIThe step of with the distance between water injection well 3 and producing well 4 L；
Otherwise, sample examination again after preset time is waited, until the liquid that the liquid of injection and corresponding producing well 4 produce
Ion concentration and composition it is identical after, perform and obtain fluid injection volume VIThe step of with the distance between water injection well 3 and producing well 4 L.
Further, the volume V of oil reservoir passageΦUse below equation obtain：
Vφ=VI-VD。
The water of injection oil reservoir passage is the injection liquid product V of oil reservoir passageI, injection water one side supplement oil reservoir passage
Volume in debt, is produced, the body for the fluid that water injection well 3 is discharged after oil reservoir passage deficit is met by corresponding producing well 4
Product VDOil reservoir passage deficit volume as before water filling.
Further, fluid injection is water filling.
Water is most common liquid, and can be recycled and free of contamination liquid, and therefore, the present embodiment selects water filling.
Further, the content of sample examination is adopted by the ion concentration and composition and producing well of water that water injection well injects
The ion concentration and composition of the water gone out.
The content of sample examination is mainly that the ion concentration of the water injected in water injection well 3 and composition and producing well 4 are adopted
The ion concentration and composition of the water gone out, thus judge inject liquid whether from water injection well 3 reach producing well 4.
If that is, water ion content and composition phase that the water injected in water injection well 3 is produced with producing well 4
Together, then illustrate that inject water reaches producing well 4 from water injection well 3.It is pointed out that the content of sample examination is not limited solely to
The composition for the water that the composition and producing well 4 of the water injected in water injection well 3 are produced, it can also be other data, as long as
Can by two numbers it is judged that go out to inject water whether from water injection well 3 reach producing well 4.
System-computed process is as follows：
1st, A1 is discharge opeing gauge table 7 in Fig. 2, and when measuring 3 discharge opeing of water injection well, oil reservoir displaced volume is oil reservoir deficit before water filling
Volume VD；
2nd, B is water injecting pump in Fig. 3, the water pump note at water source is arrived by water injecting pump the well head of water injection well 3, C1 is water injection well 3
Sample examination device, chemical examination injection water mineral constituents, A1 be water injecting metering table 2, is measured in 3 water filling of water injection well, inject
Water in oil reservoir passage is oil reservoir injection liquid product VI, on the one hand injection water supplements oil reservoir volume in debt, in satisfaction oil
Produced after hiding the deficit of passage by corresponding producing well 4, D is pressure gauge, and record water injection well 3 injects pressure；
3rd, A3 is the measure of production table 5 on producing well 4 in Fig. 4, measures the Liquid output of producing well 4, and C2 is taking for producing well 4
Sample assay device, chemically examines the moisture content of production fluid and the Analysis of Mineral Ingredient of output water of producing well 4, and checking output water is corresponding
Injection water, water injection well 3 inject water produced after the deficit of oil reservoir passage is met by corresponding producing well 4；
4th, according to injection liquid product VILiquid product V is adopted with the volume in debt of oil reservoir passage before water fillingDDetermine oil reservoir passage
Volume VΦ：
Vφ=VI-VD；
5th, the range sensor 1 according to Fig. 1 determines distance L between water injection well 3 and producing well 4；
6th, tortuosity experiment is carried out according to reservoir static data, so that it is determined that the tortuosity τ of oil reservoir passage；
7th, water injection well 3 and producing well are determined according to distance L between water injection well 3 and producing well 4 and oil reservoir passage tortuosity τ
The coverage L of oil reservoir passage between 4e：
Le=L/τ；
8th, oil reservoir passage equivalent radius r is calculated using radius formula：
So far, calculating terminates.
Oil reservoir passage equivalence Size Measuring System of the present invention and oil reservoir path control method, by gathering reservoir quantity and adopting liquid
Measure out the volume of oil reservoir passage；Show that oil reservoir leads to by the tortuosity of the distance between water injection well and producing well and oil reservoir passage
The effective length in road；The equivalent radius of oil reservoir passage is drawn by the volume of oil reservoir passage and the effective length of oil reservoir passage again,
So as to provide strong foundation for reservoir geological modeling and the suitable blocking agent of selection.
It is known that Carbonate Reservoir storage space by substantially do not have penetrating power matrix and hole therein,
Hole, seam composition, hole, hole, seam are main reservoir spaces and seepage flow and flow channel.The system be exactly based on this recognizes,
Passage and seam_cavern type that water injection well 3 and producing well 4 are connected in oil reservoir are integrated consideration, recognized as passage of equal value
Know, the equivalent radius for calculating oil reservoir passage is portrayed with the system of Reservoir behavior, foundation is provided for reservoir geological modeling, in next step
Profile control and water plugging, improve oil recovery lay the first stone.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (5)
1. a kind of oil reservoir path control method, it is characterised in that comprise the following steps：
Water injection well discharge opeing；
Liquid is adopted from producing well；
Discharge opeing volume V is obtained by the discharge opeing gauge table being arranged on the water injection wellD；
The fluid injection into the water injection well；
Fluid injection volume V is obtained by the fluid injection gauge table being arranged on the water injection wellI, by being arranged on the water injection well or adopting
Range sensor on oil well obtains the distance between the water injection well and the producing well L；
The tortuosity τ of the oil reservoir passage obtained according to advance measurement, and the distance between the water injection well and the producing well
L, draw the effective length L of oil reservoir passagee；
According to the fluid injection volume VIWith discharge opeing volume VDDetermine the volume V of oil reservoir passageΦ；
According to the effective length L of the oil reservoir passageeWith the volume V of the oil reservoir passageΦDraw the equivalent radius r of oil reservoir passage；
According to the effective length L of the oil reservoir passagee, the oil reservoir passage volume VΦWith the equivalent radius r of the oil reservoir passage
Determine the type and dosage of blocking agent；
Blocking agent is configured according to the blocking agent type and dosage of the determination；
The blocking agent configured is transported in the oil reservoir passage.
2. oil reservoir path control method according to claim 1, it is characterised in that the effective length L of the oil reservoir passagee
Obtained using below equation：
Le=L/ τ.
3. oil reservoir path control method according to claim 1, it is characterised in that it is described adopt liquid from producing well after；
The fluid injection gauge table by being arranged on water injection well obtains fluid injection volume VI, by being arranged on the water injection well or described adopting
Before range sensor on oil well obtains the distance between the water injection well and the producing well L, this method further comprises：
The liquid that the liquid and producing well injected to water injection well is produced is sampled chemical examination respectively；
If result of laboratory test is identical for the liquid of injection and the ion concentration and composition of the liquid of corresponding producing well extraction, institute is performed
State and obtain fluid injection volume VIThe step of with the distance between water injection well and the producing well L；
Otherwise, wait sample examination again after preset time, until the liquid of injection and the liquid of corresponding producing well extraction from
After sub- content and composition are identical, the acquisition fluid injection volume V is performedIWith the distance between water injection well and the producing well L step
Suddenly.
4. oil reservoir path control method according to claim 3, it is characterised in that the volume V of the oil reservoir passageΦUsing
Below equation obtains：
Vφ=VI-VD。
5. oil reservoir path control method according to claim 4, it is characterised in that the fluid injection is water filling, sample examination
The ion concentration of water that is produced by the ion concentration and composition and the producing well of water that the water injection well injects of content
And composition.
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| US4084638A (en) * | 1975-10-16 | 1978-04-18 | Probe, Incorporated | Method of production stimulation and enhanced recovery of oil |
| CN2033049U (en) * | 1987-11-26 | 1989-02-22 | 浙江省苍南县仪表三厂 | High-pressure water meter central detecting meter |
| RU2139421C1 (en) * | 1998-09-09 | 1999-10-10 | Боксерман Аркадий Анатольевич | Method for development of oil deposit |
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