CN107246900A - A kind of method and device for determining oil-water interface position - Google Patents
A kind of method and device for determining oil-water interface position Download PDFInfo
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- CN107246900A CN107246900A CN201710389361.3A CN201710389361A CN107246900A CN 107246900 A CN107246900 A CN 107246900A CN 201710389361 A CN201710389361 A CN 201710389361A CN 107246900 A CN107246900 A CN 107246900A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
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Abstract
The embodiment of the present application discloses a kind of method and device for determining oil-water interface position.Methods described includes：Obtain the pressure measurement data in region interval of interest to be measured at multiple water layer pressure tap positions and the pressure measurement data at multiple oil reservoir pressure tap positions；The interval of interest includes：Oil reservoir and water layer；The pressure measurement data include：Stratum observed pressure and depth of stratum；According to the pressure measurement data at initial Hydrostatic pressure gradient set and the multiple water layer pressure tap position, target Hydrostatic pressure gradient is determined；According to the pressure measurement data at the target Hydrostatic pressure gradient and the multiple water layer pressure tap position, the corresponding measuring pressure basis surface pressure of the interval of interest is determined；According to the pressure measurement data at the measuring pressure basis surface pressure, the target Hydrostatic pressure gradient and the multiple oil reservoir pressure tap position, the oil-water interface position of the interval of interest is determined.The degree of accuracy of oil-water interface position determined by can improving.
Description
Technical field
The application is related to petroleum exploration and development technical field, more particularly to a kind of method and dress for determining oil-water interface position
Put.
Background technology
The determination of oil-water interface position is one of key problem that oil ＆ gas pool size estimation and reserves are calculated.In the prior art
The determination method of oil-water interfaces has many kinds, and wherein pressure-depth method is one of common method.
Pressure-depth method has main steps that：Obtain the stratum observed pressure of Different Strata depth in interval of interest；Its
In, the interval of interest includes oil reservoir and water layer；According to the stratum observed pressure of Different Strata depth, depth of stratum and ground are drawn
Layer observed pressure graph of a relation, obtains depth of stratum-stratum observed pressure profile, then by being surveyed to depth of stratum-stratum
Data point on pressure traverse figure carries out fitting a straight line recurrence, obtains reservoir pressure gradient line and aquifer pressure gradient line, due to
The oil density of oil reservoir is different from the water density of water layer, between the slope of reservoir pressure gradient line and the slope of aquifer pressure gradient line
It can have differences, corresponding depth of stratum at this two straight-line intersections can be regard as oil-water interfaces position.
Inventor has found that at least there are the following problems in the prior art：For the interval of interest with heavy crude reservoir, oil is close
Difference between degree and water density is smaller, and this less difference may be close to the measurement accuracy of means of pressure measurement, may
The slope of resulting reservoir pressure gradient line and aquifer pressure gradient line is caused to be closer to, so that more difficult accurately determine mesh
Interval in oil-water interfaces position.
The content of the invention
The purpose of the embodiment of the present application is to provide a kind of method and device for determining oil-water interface position, is determined with improving
Oil-water interface position the degree of accuracy.
In order to solve the above technical problems, a kind of method and device of determination oil-water interface position of the embodiment of the present application offer is
It is achieved in that：
A kind of method for determining oil-water interface position, including：
Obtain the pressure measurement data and multiple oil reservoir pressure taps in region interval of interest to be measured at multiple water layer pressure tap positions
Pressure measurement data at position；The interval of interest includes：Oil reservoir and water layer；The pressure measurement data include：Stratum observed pressure and
Depth of stratum；
According to the pressure measurement data at initial Hydrostatic pressure gradient set and the multiple water layer pressure tap position, target is determined
Hydrostatic pressure gradient；
According to the pressure measurement data at the target Hydrostatic pressure gradient and the multiple water layer pressure tap position, it is determined that described
The corresponding measuring pressure basis surface pressure of interval of interest；
At the measuring pressure basis surface pressure, the target Hydrostatic pressure gradient and the multiple oil reservoir pressure tap position
Pressure measurement data, determine the oil-water interface position of the interval of interest.
In preferred scheme, the survey at the initial Hydrostatic pressure gradient set of basis and the multiple water layer pressure tap position
Data are pressed, target Hydrostatic pressure gradient is determined, including：
According to the pressure measurement data at initial Hydrostatic pressure gradient set and the multiple water layer pressure tap position, gathered using examination
Method determines the target Hydrostatic pressure gradient.
In preferred scheme, the survey at the initial Hydrostatic pressure gradient set of basis and the multiple water layer pressure tap position
Data are pressed, the target Hydrostatic pressure gradient is determined using the examination method of gathering, including：
According to an initial Hydrostatic pressure gradient and the multiple water layer pressure measurement in the initial Hydrostatic pressure gradient set
Stratum observed pressure and depth of stratum in pressure measurement data at point position, determine that the initial Hydrostatic pressure gradient is corresponding described more
Residual compression at individual water layer pressure tap position；
According to the residual compression and depth of stratum at the multiple water layer pressure tap position, the initial hydrostatic pressure ladder is determined
Spend residual compression fitting a straight line in a corresponding water layer；
Calculate the residual compression variance at the multiple water layer pressure tap position corresponding with the Hydrostatic pressure gradient value；One
Individual initial Hydrostatic pressure gradient correspondence obtains a residual compression fitting a straight line and a residual compression variance, the initial hydrostatic
Barometric gradient set correspondence obtains a plurality of residual compression fitting a straight line and multiple residual compression variances；
It regard the initial Hydrostatic pressure gradient for meeting following conditions as the target Hydrostatic pressure gradient：Obtained described
In a plurality of fitting a straight line, residual compression fitting a straight line and residual compression vertical line shape that the initial Hydrostatic pressure gradient correspondence is obtained
Angle into angle is minimum；Or, in obtained multiple residual compression variances, the initial Hydrostatic pressure gradient correspondence
Obtained residual compression variance is minimum.
In preferred scheme, when in the initial Hydrostatic pressure gradient set at least two initial Hydrostatic pressure gradients to deserved
When the residual compression fitting a straight line arrived is identical and minimum with the angle of residual compression vertical line formation angle, by the beginning of described at least two
The initial Hydrostatic pressure gradient for the residual compression variance minimum that correspondence is obtained in beginning Hydrostatic pressure gradient is as the target hydrostatic
Barometric gradient.
In preferred scheme, when multiple initial Hydrostatic pressure gradients correspond to what is obtained in the initial Hydrostatic pressure gradient set
When residual compression variance is identical and minimum, the residual compression that correspondence is obtained in the multiple initial Hydrostatic pressure gradient is fitted straight
The line initial Hydrostatic pressure gradient minimum with residual compression vertical line formation angle angle is used as the target Hydrostatic pressure gradient.
In preferred scheme, the survey according at the target Hydrostatic pressure gradient and the multiple water layer pressure tap position
Data are pressed, the corresponding measuring pressure basis surface pressure of the interval of interest is determined, including：
According to the pressure measurement data at the target Hydrostatic pressure gradient and the multiple water layer pressure tap position, it is determined that and institute
State multiple water layer pressure tap positions and distinguish corresponding target residual compression；
It regard the average value of target residual compression corresponding with the multiple water layer pressure tap position difference as the pressure measurement
Benchmark surface pressure.
It is described according to the measuring pressure basis surface pressure, the target Hydrostatic pressure gradient and the multiple in preferred scheme
Pressure measurement data at oil reservoir pressure tap position, determine the oil-water interface position of the interval of interest, including：
According to stratum observed pressure and depth of stratum, Yi Jisuo in the pressure measurement data at the multiple oil reservoir pressure tap position
Target Hydrostatic pressure gradient is stated, it is determined that target residual compression corresponding with the multiple oil reservoir pressure tap position difference；
According to target residual compression corresponding with the multiple oil reservoir pressure tap position difference and depth of stratum, it is determined that described
Residual compression target fitting a straight line in oil reservoir；
According to residual compression target fitting a straight line in the oil reservoir and the measuring pressure basis surface pressure, the target zone is determined
The oil-water interface position of section.
It is described according to residual compression target fitting a straight line in the oil reservoir and the measuring pressure basis face pressure in preferred scheme
Power, determines the oil-water interface position of the interval of interest, including：
According to the measuring pressure basis surface pressure, residual compression target fitting a straight line in the water layer is determined；
By the friendship of residual compression target fitting a straight line in residual compression target fitting a straight line in the oil reservoir and the water layer
Point at corresponding depth of stratum as the interval of interest oil-water interface position.
It is described according to the measuring pressure basis surface pressure in preferred scheme, determine that residual compression target is fitted in the water layer
Straight line, including：
Set up using residual compression be abscissa and depth of stratum as ordinate coordinate system；
Residual compression in the coordinate system is regard as remaining pressure in the water layer for the vertical line of the measuring pressure basis surface pressure
Power target fitting a straight line.
A kind of device for determining oil-water interface position, described device includes：Pressure measurement data acquisition module, target hydrostatic pressure
Gradient determining module, measuring pressure basis surface pressure determining module and oil-water interface position determining module；Wherein,
The pressure measurement data acquisition module, for obtaining in region interval of interest to be measured at multiple water layer pressure tap positions
Pressure measurement data at pressure measurement data and multiple oil reservoir pressure tap positions；The interval of interest includes：Oil reservoir and water layer；The pressure measurement
Data include：Stratum observed pressure and depth of stratum；
The target Hydrostatic pressure gradient determining module, for according to initial Hydrostatic pressure gradient set and the multiple water
Pressure measurement data at layer pressure tap position, determine target Hydrostatic pressure gradient；
The measuring pressure basis surface pressure determining module, for according to the target Hydrostatic pressure gradient and the multiple water layer
Pressure measurement data at pressure tap position, determine the corresponding measuring pressure basis surface pressure of the interval of interest；
The oil-water interface position determining module, for according to the measuring pressure basis surface pressure, the target hydrostatic pressure
Pressure measurement data at gradient and the multiple oil reservoir pressure tap position, determine the oil-water interface position of the interval of interest.
In preferred scheme, the measuring pressure basis surface pressure determining module includes：Water layer residual compression determining module and benchmark
Surface pressure determining module；Wherein,
The water layer residual compression determining module, for according to the target Hydrostatic pressure gradient and the survey of the multiple water layer
Pressure measurement data at pressure point position, it is determined that target residual compression corresponding with the multiple water layer pressure tap position difference；
The benchmark surface pressure determining module, is remained for that will distinguish corresponding target with the multiple water layer pressure tap position
The average value of overbottom pressure power is used as the measuring pressure basis surface pressure.
In preferred scheme, the oil-water interface position determining module includes：Oil reservoir residual compression determining module, fitting a straight line
Determining module and interface location determining module；Wherein,
The oil reservoir residual compression determining module, for according in the pressure measurement data at the multiple oil reservoir pressure tap position
Stratum observed pressure and depth of stratum, and the target Hydrostatic pressure gradient, it is determined that with the multiple oil reservoir pressure tap position
The corresponding target residual compression of difference；
The fitting a straight line determining module, for according to surplus with the corresponding target of the multiple oil reservoir pressure tap position difference
Overbottom pressure power and depth of stratum, determine residual compression target fitting a straight line in the oil reservoir；
The interface location determining module, for according to residual compression target fitting a straight line in the oil reservoir and the pressure measurement
Benchmark surface pressure, determines the oil-water interface position of the interval of interest.
The embodiment of the present application provides a kind of method and device for determining oil-water interface position, can obtain region mesh to be measured
Interval in the pressure measurement data at multiple water layer pressure tap positions and the pressure measurement data at multiple oil reservoir pressure tap positions.According to first
Pressure measurement data at beginning Hydrostatic pressure gradient set and the multiple water layer pressure tap position, it may be determined that target hydrostatic pressure ladder
Degree.According to the pressure measurement data at the target Hydrostatic pressure gradient and the multiple water layer pressure tap position, it may be determined that described
The corresponding measuring pressure basis surface pressure of interval of interest.According to the measuring pressure basis surface pressure, the target Hydrostatic pressure gradient and institute
State the pressure measurement data at multiple oil reservoir pressure tap positions, it may be determined that the oil-water interface position of the interval of interest.For with
The interval of interest of heavy crude reservoir, the application method can relatively accurately obtain oil according to identified measuring pressure basis surface pressure
The position of intersecting point of residual compression target fitting a straight line and the residual compression target fitting a straight line in water layer in layer, so as to carry
Height determines the degree of accuracy of the oil-water interface position of the interval of interest.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart for the embodiment of the method for determining oil-water interface position of the application；
Fig. 2 is that the fitting of the residual compression and depth of stratum corresponding to target Hydrostatic pressure gradient in the embodiment of the present application is straight
Line schematic diagram；
Fig. 3 is the composition structure chart for the device embodiment that the application determines oil-water interface position；
Fig. 4 is the composition that the application determines measuring pressure basis surface pressure determining module in the device embodiment of oil-water interface position
Structure chart；
Fig. 5 is the composition knot that the application determines oil-water interface position determining module in the device embodiment of oil-water interface position
Composition.
Embodiment
The embodiment of the present application provides a kind of method and device for determining oil-water interface position.
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
Fig. 1 is a kind of flow chart for the embodiment of the method for determining oil-water interface position of the application.As shown in figure 1, described true
Determine the method for oil-water interface position, comprise the following steps：
Step S101：Obtain pressure measurement data and multiple oil at multiple water layer pressure tap positions in region interval of interest to be measured
Pressure measurement data at layer pressure tap position.
The region to be measured can be the subregion in whole oil field region or oil field.The interval of interest
Single trap can be formed.Populated with heavy crude reservoir in the trap.The interval of interest can include：Oil reservoir and water layer.It is described
Pressure between oil reservoir and water layer can be interconnected, and not have other liquid barriers layer between this two layers.
Depth of stratum in the interval of interest at multiple water layer pressure tap positions is different.Multiple oil in the interval of interest
Depth of stratum at layer pressure tap position is also different.
The pressure measurement data can include：Stratum observed pressure and depth of stratum.By way of drilling well and data acquisition
Mode, the pressure measurement data can be obtained.
Step S102：According to the pressure measurement number at initial Hydrostatic pressure gradient set and the multiple water layer pressure tap position
According to determining target Hydrostatic pressure gradient.
The a certain interval in a certain work area can form single trap.Can be with populated with oil reservoir in the trap.In the interval,
Residual compression at a certain depth of stratum is the stratum observed pressure at the depth of stratum and the hydrostatic pressure at the depth of stratum
Difference.Wherein, in the water layer of the interval, the residual compression of Different Strata depth is identical, as a constant.In the interval
In oil reservoir, the residual compression at any depth of stratum is all higher than the constant, and more remote apart from oil-water interface position, and residual compression is got over
Greatly.The constant is usually the corresponding measuring pressure basis surface pressure of the interval.Certain in the interval generally can be represented using following formula
Residual compression at pressure tap position：
Pr=P-Pw=P-Gwh (1)
In formula (1), PrThe residual compression at the pressure tap position is represented, unit is pound/square inch (psi), and P is represented
Stratum observed pressure at the pressure tap position, unit is psi, PwThe hydrostatic pressure at the pressure tap position is represented, unit is
Psi, GwRepresent Hydrostatic pressure gradient, Gw=0.1450377 ρwG, ρwThe water density under formation conditions is represented, unit is gram/cube
Centimetre (g/cm3), g represents acceleration of gravity, and value is square (m/s of 9.78 meter per seconds2), 0.1450377 be the PSI system of units and
Unit conversion factor between the MPA system of units.
According to the pressure measurement data at initial Hydrostatic pressure gradient set and the multiple water layer pressure tap position, it may be determined that
Target Hydrostatic pressure gradient.The initial Hydrostatic pressure gradient set can be the one group of Hydrostatic pressure gradient value pre-set.
In one embodiment, at according to initial Hydrostatic pressure gradient set and the multiple water layer pressure tap position
Pressure measurement data, can determine the target Hydrostatic pressure gradient using the examination method of gathering.Specifically, according to the initial hydrostatic pressure
Stratum is real in an initial Hydrostatic pressure gradient in gradient set, and pressure measurement data at the multiple water layer pressure tap position
Measuring pressure and depth of stratum, it may be determined that surplus at the corresponding the multiple water layer pressure tap position of the initial Hydrostatic pressure gradient
Overbottom pressure power.According to the residual compression and depth of stratum at the multiple water layer pressure tap position, it may be determined that the initial hydrostatic pressing
Residual compression fitting a straight line in the corresponding water layer of power gradient.It can calculate corresponding with the Hydrostatic pressure gradient value described many
Residual compression variance at individual water layer pressure tap position.So, an initial Hydrostatic pressure gradient correspondence obtains a remaining pressure
Power fitting a straight line and a residual compression variance, the initial Hydrostatic pressure gradient set can correspond to and obtain a plurality of residual compression
Fitting a straight line and multiple residual compression variances.Can be quiet as the target using the initial Hydrostatic pressure gradient for meeting following conditions
Water pressure gradient：In the obtained a plurality of fitting a straight line, the residual compression that the initial Hydrostatic pressure gradient correspondence is obtained
Fitting a straight line and the angle of residual compression vertical line formation angle are minimum.Wherein it is possible to the residue at the water layer pressure tap position
Pressure is abscissa and depth of stratum is ordinate one coordinate system of composition.The residual compression vertical line can be with the coordinate system
The parallel a certain vertical line of ordinate.
It is possible to further calculate the corresponding the multiple water layer of the initial Hydrostatic pressure gradient using the formula (1)
Residual compression at pressure tap position.
In another embodiment, when at least two initial hydrostatic pressure ladder in the initial Hydrostatic pressure gradient set
, can be by institute when the residual compression fitting a straight line that degree correspondence is obtained is identical and minimum with the angle of residual compression vertical line formation angle
State the initial Hydrostatic pressure gradient conduct for the residual compression variance minimum that correspondence is obtained at least two initial Hydrostatic pressure gradients
The target Hydrostatic pressure gradient.
In another embodiment, can be quiet as the target using the initial Hydrostatic pressure gradient for meeting following conditions
Water pressure gradient：In obtained multiple residual compression variances, the residue that the initial Hydrostatic pressure gradient correspondence is obtained
Pressure variance is minimum.
In another embodiment, when multiple initial Hydrostatic pressure gradients pair in the initial Hydrostatic pressure gradient set
When the residual compression variance that should be obtained is identical and minimum, can obtain correspondence in the multiple initial Hydrostatic pressure gradient is surplus
The overbottom pressure power fitting a straight line initial Hydrostatic pressure gradient minimum with residual compression vertical line formation angle angle is quiet as the target
Water pressure gradient.
Step S103：According to the pressure measurement number at the target Hydrostatic pressure gradient and the multiple water layer pressure tap position
According to determining the corresponding measuring pressure basis surface pressure of the interval of interest.
Specifically, according to the pressure measurement data at the target Hydrostatic pressure gradient and the multiple water layer pressure tap position,
Target residual compression corresponding with the multiple water layer pressure tap position difference can be determined.It can be surveyed described with multiple water layers
The average value that corresponding target residual compression is distinguished in pressure point position is used as the measuring pressure basis surface pressure.
Step S104：Surveyed according to the measuring pressure basis surface pressure, the target Hydrostatic pressure gradient and the multiple oil reservoir
Pressure measurement data at pressure point position, determine the oil-water interface position of the interval of interest.
According to stratum observed pressure and depth of stratum, Yi Jisuo in the pressure measurement data at the multiple oil reservoir pressure tap position
State target Hydrostatic pressure gradient, it may be determined that target residual compression corresponding with the multiple oil reservoir pressure tap position difference.Root
According to corresponding with multiple oil reservoir pressure tap position difference the target residual compression and depth of stratum, it may be determined that in the oil reservoir
Residual compression target fitting a straight line.According to residual compression target fitting a straight line in the oil reservoir and the measuring pressure basis surface pressure,
The oil-water interface position of the interval of interest can be determined.
In one embodiment, according to residual compression target fitting a straight line in the oil reservoir and the measuring pressure basis face pressure
Power, determines the oil-water interface position of the interval of interest.Specifically, due to the residual compression phase of Different Strata depth in water layer
Together, it is the measuring pressure basis surface pressure, according to the measuring pressure basis surface pressure, it may be determined that residual compression mesh in the water layer
Mark fitting a straight line.Residual compression target in residual compression target fitting a straight line in the oil reservoir and the water layer can be fitted straight
The corresponding depth of stratum of point of intersection of line as the interval of interest oil-water interface position.
In one embodiment, according to the measuring pressure basis surface pressure, determine that residual compression target is intended in the water layer
Close straight line.Specifically, can set up using residual compression be abscissa and depth of stratum as ordinate coordinate system.Can will be described
Residual compression is intended for the vertical line of the measuring pressure basis surface pressure as residual compression target in the water layer in the coordinate system of foundation
Close straight line.
For example, Fig. 2 is the residual compression and depth of stratum corresponding to target Hydrostatic pressure gradient in the embodiment of the present application
Fitting a straight line schematic diagram.Abscissa is residual compression in Fig. 2, and ordinate is depth of stratum.Depth of stratum and residual compression are one by one
Correspondence.As shown in Fig. 2 the corresponding measuring pressure basis surface pressure of the interval of interest is the residue at multiple pressure tap positions in water layer
The average value of pressure, i.e. 854.07psi.So, the residual compression target fitting a straight line in the water layer is that residual compression is
854.07psi and the vertical line parallel with ordinate.By residual compression target fitting a straight line in the oil reservoir and the intersection point of the vertical line
Locate corresponding depth of stratum as the position that the oil-water interface position of the interval of interest, i.e. depth of stratum are 533.3m.In this way,
For the interval of interest with heavy crude reservoir, based on identified measuring pressure basis surface pressure, it can accurately obtain in oil reservoir and remain
The position of intersecting point of remaining pressure target fitting a straight line and the residual compression target fitting a straight line in water layer, so as to relatively accurately
Determine the oil-water interface position of interval of interest.
The embodiment of the method for determining oil-water interface position, can obtain multiple water layers in region interval of interest to be measured and survey
The pressure measurement data at pressure measurement data and multiple oil reservoir pressure tap positions at pressure point position.According to initial Hydrostatic pressure gradient set
With the pressure measurement data at the multiple water layer pressure tap position, it may be determined that target Hydrostatic pressure gradient.It is quiet according to the target
Pressure measurement data at water pressure gradient and the multiple water layer pressure tap position, it may be determined that the corresponding pressure measurement of the interval of interest
Benchmark surface pressure.According to the measuring pressure basis surface pressure, the target Hydrostatic pressure gradient and the multiple oil reservoir pressure tap position
Put the pressure measurement data at place, it may be determined that the oil-water interface position of the interval of interest.For the interval of interest with heavy crude reservoir,
The application method can be according to identified measuring pressure basis surface pressure, and the residual compression target relatively accurately obtained in oil reservoir is intended
Straight line and the position of intersecting point of the residual compression target fitting a straight line in water layer are closed, the interval of interest is determined so as to improve
The degree of accuracy of oil-water interface position.
Fig. 3 is the composition structure chart for the device embodiment that the application determines oil-water interface position.As shown in figure 3, the oil
The device of water termination position can include：Pressure measurement data acquisition module 100, target Hydrostatic pressure gradient determining module 200, pressure measurement
Benchmark surface pressure determining module 300 and oil-water interface position determining module 400.
The pressure measurement data acquisition module 100, can be used for obtaining multiple water layer pressure taps in region interval of interest to be measured
The pressure measurement data at pressure measurement data and multiple oil reservoir pressure tap positions at position；The interval of interest can include：Oil reservoir and
Water layer；The pressure measurement data can include：Stratum observed pressure and depth of stratum.
The target Hydrostatic pressure gradient determining module 200, can be used for according to initial Hydrostatic pressure gradient set and institute
The pressure measurement data at multiple water layer pressure tap positions are stated, target Hydrostatic pressure gradient is determined.
The measuring pressure basis surface pressure determining module 300, can be used for according to the target Hydrostatic pressure gradient and described
Pressure measurement data at multiple water layer pressure tap positions, determine the corresponding measuring pressure basis surface pressure of the interval of interest.
The oil-water interface position determining module 400, can be used for quiet according to the measuring pressure basis surface pressure, the target
Pressure measurement data at water pressure gradient and the multiple oil reservoir pressure tap position, determine the oil-water interfaces position of the interval of interest
Put.
Fig. 4 is the composition that the application determines measuring pressure basis surface pressure determining module in the device embodiment of oil-water interface position
Structure chart.As shown in figure 4, measuring pressure basis surface pressure determining module 300 can include in Fig. 3：Water layer residual compression determining module
310 and benchmark surface pressure determining module 320.
The water layer residual compression determining module 310, can be used for according to the target Hydrostatic pressure gradient and described many
Pressure measurement data at individual water layer pressure tap position, it is determined that target corresponding with the multiple water layer pressure tap position difference residue pressure
Power.
The benchmark surface pressure determining module 320, can be used for will be described corresponding respectively with multiple water layer pressure tap positions
The average value of target residual compression be used as the measuring pressure basis surface pressure.
Fig. 5 is the composition knot that the application determines oil-water interface position determining module in the device embodiment of oil-water interface position
Composition.As shown in figure 5, oil-water interface position determining module 400 can include in Fig. 3：Oil reservoir residual compression determining module 410,
Fitting a straight line determining module 420 and interface location determining module 430.
The oil reservoir residual compression determining module 410, can be used for according to the survey at the multiple oil reservoir pressure tap position
Stratum observed pressure and depth of stratum in data, and the target Hydrostatic pressure gradient are pressed, it is determined that being surveyed with the multiple oil reservoir
Distinguish corresponding target residual compression in pressure point position.
The fitting a straight line determining module 420, can be used for according to corresponding respectively with the multiple oil reservoir pressure tap position
Target residual compression and depth of stratum, determine residual compression target fitting a straight line in the oil reservoir.
The interface location determining module 430, can be used for according to residual compression target fitting a straight line in the oil reservoir and
The measuring pressure basis surface pressure, determines the oil-water interface position of the interval of interest.
The embodiment of the method phase of the device embodiment for determining oil-water interface position and the determination oil-water interface position
Correspondence, it is possible to achieve the present processes embodiment, and the technique effect of adquisitiones embodiment.
In the 1990s, for a technology improvement can clearly distinguish be on hardware improvement (for example,
Improvement to circuit structures such as diode, transistor, switches) or software on improvement (for the improvement of method flow).So
And, with the development of technology, the improvement of current many method flows can be considered as directly improving for hardware circuit.
Designer nearly all obtains corresponding hardware circuit by the way that improved method flow is programmed into hardware circuit.Cause
This, it cannot be said that the improvement of a method flow cannot be realized with hardware entities module.For example, PLD
(Programmable Logic Device, PLD) (such as field programmable gate array (Field Programmable Gate
Array, FPGA)) it is exactly such a integrated circuit, its logic function is determined by user to device programming.By designer
Voluntarily programming comes a digital display circuit " integrated " on a piece of PLD, without asking chip maker to design and make
Special IC chip 2.Moreover, nowadays, substitution manually makes IC chip, and this programming is also used instead mostly
" logic compiler (logic compiler) " software realizes that software compiler used is similar when it writes with program development
Seemingly, and the source code before compiling also handy specific programming language is write, this is referred to as hardware description language
(Hardware Description Language, HDL), and HDL is also not only a kind of, but have many kinds, such as ABEL
(Advanced Boolean Expression Language)、AHDL(Altera Hardware Description
Language)、Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL
(Java Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby
Hardware Description Language) etc., VHDL (Very-High-Speed are most generally used at present
Integrated Circuit Hardware Description Language) and Verilog2.Those skilled in the art
It will be apparent to the skilled artisan that only needing to method flow slightly programming in logic and being programmed into integrated circuit with above-mentioned several hardware description languages
In, it is possible to it is readily available the hardware circuit for realizing the logical method flow.
Controller can be implemented in any suitable manner, for example, controller can take such as microprocessor or processing
Device and storage can by the computer of the computer readable program code (such as software or firmware) of (micro-) computing device
Read medium, gate, switch, application specific integrated circuit (Application Specific Integrated Circuit,
ASIC), the form of programmable logic controller (PLC) and embedded microcontroller, the example of controller includes but is not limited to following microcontroller
Device：ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320, are deposited
Memory controller is also implemented as a part for the control logic of memory.
It is also known in the art that in addition to realizing controller in pure computer readable program code mode, it is complete
Controller can be caused with gate, switch, application specific integrated circuit, programmable by the way that method and step is carried out into programming in logic entirely
Logic controller realizes identical function with the form of embedded microcontroller etc..Therefore this controller is considered one kind
Hardware component, and the structure in hardware component can also be considered as to the device for realizing various functions included in it.Or
Even, it not only can be able to will be the software module of implementation method for realizing that the device of various functions is considered as but also can be Hardware Subdivision
Structure in part.
System, device, module or unit that above-described embodiment is illustrated, can specifically be realized by computer chip or entity,
Or realized by the product with certain function.
For convenience of description, it is divided into various units during description apparatus above with function to describe respectively.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during application.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
Realized by the mode of software plus required general hardware platform.Understood based on such, the technical scheme essence of the application
On the part that is contributed in other words to prior art can be embodied in the form of software product, in a typical configuration
In, computing device includes one or more processors (CPU), input/output interface, network interface and internal memory.The computer is soft
Part product can include some instructions to cause a computer equipment (can be personal computer, server, or network
Equipment etc.) perform method described in some parts of each embodiment of the application or embodiment.The computer software product can
To be stored in internal memory, internal memory potentially includes the volatile memory in computer-readable medium, random access memory
And/or the form, such as read-only storage (ROM) or flash memory (flash RAM) such as Nonvolatile memory (RAM).Internal memory is computer
The example of computer-readable recording medium.Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by
Any method or technique come realize information store.Information can be computer-readable instruction, data structure, the module of program or its
His data.The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM
(SRAM), dynamic random access memory (DRAM), other kinds of random access memory (RAM), read-only storage
(ROM), Electrically Erasable Read Only Memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc are read-only
Memory (CD-ROM), digital versatile disc (DVD) or other optical storages, magnetic cassette tape, tape magnetic rigid disk storage or
Other magnetic storage apparatus or any other non-transmission medium, the information that can be accessed by a computing device available for storage.According to
Herein defines, and computer-readable medium does not include of short duration computer readable media (transitory media), such as modulation
Data-signal and carrier wave.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for system
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
The application can be used in numerous general or special purpose computing system environments or configuration.For example：Personal computer, clothes
Business device computer, handheld device or portable set, laptop device, multicomputer system, the system based on microprocessor, put
Top box, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer including any of the above system or equipment
DCE etc..
The application can be described in the general context of computer executable instructions, such as program
Module.Usually, program module includes performing particular task or realizes routine, program, object, the group of particular abstract data type
Part, data structure etc..The application can also be put into practice in a distributed computing environment, in these DCEs, by
Remote processing devices connected by communication network perform task.In a distributed computing environment, program module can be with
Positioned at including in the local and remote computer-readable storage medium including storage device.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have it is many deformation and
Change is without departing from spirit herein, it is desirable to which appended claim includes these deformations and changed without departing from the application's
Spirit.
Claims (12)
1. a kind of method for determining oil-water interface position, it is characterised in that including：
Obtain the pressure measurement data in region interval of interest to be measured at multiple water layer pressure tap positions and multiple oil reservoir pressure tap positions
The pressure measurement data at place；The interval of interest includes：Oil reservoir and water layer；The pressure measurement data include：Stratum observed pressure and stratum
Depth；
According to the pressure measurement data at initial Hydrostatic pressure gradient set and the multiple water layer pressure tap position, target hydrostatic is determined
Barometric gradient；
According to the pressure measurement data at the target Hydrostatic pressure gradient and the multiple water layer pressure tap position, the purpose is determined
The corresponding measuring pressure basis surface pressure of interval；
According to the survey at the measuring pressure basis surface pressure, the target Hydrostatic pressure gradient and the multiple oil reservoir pressure tap position
Data are pressed, the oil-water interface position of the interval of interest is determined.
2. a kind of method for determining oil-water interface position according to claim 1, it is characterised in that the basis is initially quiet
Pressure measurement data at the set of water pressure gradient and the multiple water layer pressure tap position, determine target Hydrostatic pressure gradient, including：
According to the pressure measurement data at initial Hydrostatic pressure gradient set and the multiple water layer pressure tap position, method is gathered using examination
Determine the target Hydrostatic pressure gradient.
3. a kind of method for determining oil-water interface position according to claim 2, it is characterised in that the basis is initially quiet
Pressure measurement data at the set of water pressure gradient and the multiple water layer pressure tap position, determine that the target is quiet using the examination method of gathering
Water pressure gradient, including：
According to one in the initial Hydrostatic pressure gradient set initial Hydrostatic pressure gradient and the multiple water layer pressure tap position
Stratum observed pressure and depth of stratum in the pressure measurement data at place are put, the corresponding the multiple water of the initial Hydrostatic pressure gradient is determined
Residual compression at layer pressure tap position；
According to the residual compression and depth of stratum at the multiple water layer pressure tap position, the initial Hydrostatic pressure gradient pair is determined
Residual compression fitting a straight line in the water layer answered；
Calculate the residual compression variance at the multiple water layer pressure tap position corresponding with the Hydrostatic pressure gradient value；At the beginning of one
Beginning Hydrostatic pressure gradient correspondence obtains a residual compression fitting a straight line and a residual compression variance, the initial hydrostatic pressure
Gradient set correspondence obtains a plurality of residual compression fitting a straight line and multiple residual compression variances；
It regard the initial Hydrostatic pressure gradient for meeting following conditions as the target Hydrostatic pressure gradient：It is described obtain it is a plurality of
In fitting a straight line, the residual compression fitting a straight line that the initial Hydrostatic pressure gradient correspondence is obtained is pressed from both sides with the formation of residual compression vertical line
The angle at angle is minimum；Or, in obtained multiple residual compression variances, the initial Hydrostatic pressure gradient correspondence is obtained
Residual compression variance it is minimum.
4. a kind of method for determining oil-water interface position according to claim 3, it is characterised in that when the initial hydrostatic
The residual compression fitting a straight line that at least two initial Hydrostatic pressure gradient correspondences are obtained in barometric gradient set is hung down with residual compression
When the angle of line formation angle is identical and minimum, the remaining pressure that correspondence in described at least two initial Hydrostatic pressure gradients is obtained
The minimum initial Hydrostatic pressure gradient of power variance is used as the target Hydrostatic pressure gradient.
5. a kind of method for determining oil-water interface position according to claim 3, it is characterised in that when the initial hydrostatic
, will be described many when the residual compression variance that multiple initial Hydrostatic pressure gradient correspondences are obtained in barometric gradient set is identical and minimum
The residual compression fitting a straight line that correspondence is obtained in individual initial Hydrostatic pressure gradient and residual compression vertical line formation angle angle are minimum
Initial Hydrostatic pressure gradient be used as the target Hydrostatic pressure gradient.
6. a kind of method for determining oil-water interface position according to claim 1, it is characterised in that described according to the mesh
The pressure measurement data at Hydrostatic pressure gradient and the multiple water layer pressure tap position are marked, the corresponding pressure measurement of the interval of interest is determined
Benchmark surface pressure, including：
According to the pressure measurement data at the target Hydrostatic pressure gradient and the multiple water layer pressure tap position, it is determined that with it is described many
Distinguish corresponding target residual compression in individual water layer pressure tap position；
It regard the average value of target residual compression corresponding with the multiple water layer pressure tap position difference as the measuring pressure basis
Surface pressure.
7. a kind of method for determining oil-water interface position according to claim 1, it is characterised in that described to be surveyed according to described
The pressure measurement data at benchmark surface pressure, the target Hydrostatic pressure gradient and the multiple oil reservoir pressure tap position are pressed, institute is determined
The oil-water interface position of interval of interest is stated, including：
According to stratum observed pressure and depth of stratum in the pressure measurement data at the multiple oil reservoir pressure tap position, and the mesh
Hydrostatic pressure gradient is marked, it is determined that target residual compression corresponding with the multiple oil reservoir pressure tap position difference；
According to target residual compression corresponding with the multiple oil reservoir pressure tap position difference and depth of stratum, the oil reservoir is determined
Interior residual compression target fitting a straight line；
According to residual compression target fitting a straight line in the oil reservoir and the measuring pressure basis surface pressure, the interval of interest is determined
Oil-water interface position.
8. a kind of method for determining oil-water interface position according to claim 7, it is characterised in that described according to the oil
Residual compression target fitting a straight line and the measuring pressure basis surface pressure, determine the oil-water interface position of the interval of interest in layer,
Including：
According to the measuring pressure basis surface pressure, residual compression target fitting a straight line in the water layer is determined；
By the point of intersection of residual compression target fitting a straight line in residual compression target fitting a straight line in the oil reservoir and the water layer
Corresponding depth of stratum as the interval of interest oil-water interface position.
9. a kind of method for determining oil-water interface position according to claim 8, it is characterised in that described to be surveyed according to described
Benchmark surface pressure is pressed, residual compression target fitting a straight line in the water layer is determined, including：
Set up using residual compression be abscissa and depth of stratum as ordinate coordinate system；
Residual compression in the coordinate system is regard as residual compression mesh in the water layer for the vertical line of the measuring pressure basis surface pressure
Mark fitting a straight line.
10. a kind of device for determining oil-water interface position, it is characterised in that described device includes：Pressure measurement data acquisition module, mesh
Mark Hydrostatic pressure gradient determining module, measuring pressure basis surface pressure determining module and oil-water interface position determining module；Wherein,
The pressure measurement data acquisition module, for obtaining the pressure measurement in region interval of interest to be measured at multiple water layer pressure tap positions
Pressure measurement data at data and multiple oil reservoir pressure tap positions；The interval of interest includes：Oil reservoir and water layer；The pressure measurement data
Including：Stratum observed pressure and depth of stratum；
The target Hydrostatic pressure gradient determining module, for according to initial Hydrostatic pressure gradient set and the survey of the multiple water layer
Pressure measurement data at pressure point position, determine target Hydrostatic pressure gradient；
The measuring pressure basis surface pressure determining module, for according to the target Hydrostatic pressure gradient and the multiple water layer pressure measurement
Pressure measurement data at point position, determine the corresponding measuring pressure basis surface pressure of the interval of interest；
The oil-water interface position determining module, for according to the measuring pressure basis surface pressure, the target Hydrostatic pressure gradient
Pressure measurement data with the multiple oil reservoir pressure tap position, determine the oil-water interface position of the interval of interest.
11. a kind of device for determining oil-water interface position according to claim 10, it is characterised in that the measuring pressure basis
Surface pressure determining module includes：Water layer residual compression determining module and benchmark surface pressure determining module；Wherein,
The water layer residual compression determining module, for according to the target Hydrostatic pressure gradient and the multiple water layer pressure tap
Pressure measurement data at position, it is determined that target residual compression corresponding with the multiple water layer pressure tap position difference；
The benchmark surface pressure determining module, for target residue corresponding with the multiple water layer pressure tap position difference to be pressed
The average value of power is used as the measuring pressure basis surface pressure.
12. a kind of device for determining oil-water interface position according to claim 10, it is characterised in that the oil-water interfaces
Position determination module includes：Oil reservoir residual compression determining module, fitting a straight line determining module and interface location determining module；Its
In,
The oil reservoir residual compression determining module, for according to stratum in the pressure measurement data at the multiple oil reservoir pressure tap position
Observed pressure and depth of stratum, and the target Hydrostatic pressure gradient, it is determined that distinguishing with the multiple oil reservoir pressure tap position
Corresponding target residual compression；
The fitting a straight line determining module, for according to target corresponding with the multiple oil reservoir pressure tap position difference residue pressure
Power and depth of stratum, determine residual compression target fitting a straight line in the oil reservoir；
The interface location determining module, for according to residual compression target fitting a straight line in the oil reservoir and the measuring pressure basis
Surface pressure, determines the oil-water interface position of the interval of interest.
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| CN111044118A (en) * | 2018-10-15 | 2020-04-21 | 中国石油天然气股份有限公司 | System, method and device for measuring oil-water interface height in normal-pressure oil tank |
| CN111811988A (en) * | 2020-07-14 | 2020-10-23 | 中海石油(中国)有限公司 | Method for predicting gas-oil interface in trap based on fluid analysis and application thereof |
| CN112446065A (en) * | 2019-09-03 | 2021-03-05 | 中国石油天然气集团有限公司 | Oil-water interface depth determination method and system |
| CN113803054A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | Oil-water interface depth determination method and early warning method for preventing water channeling of production well |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111044118A (en) * | 2018-10-15 | 2020-04-21 | 中国石油天然气股份有限公司 | System, method and device for measuring oil-water interface height in normal-pressure oil tank |
| CN112446065A (en) * | 2019-09-03 | 2021-03-05 | 中国石油天然气集团有限公司 | Oil-water interface depth determination method and system |
| CN113803054A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | Oil-water interface depth determination method and early warning method for preventing water channeling of production well |
| CN113803054B (en) * | 2020-06-11 | 2024-04-09 | 中国石油化工股份有限公司 | Oil-water interface depth determining method and early warning method for preventing production well water channeling |
| CN111811988A (en) * | 2020-07-14 | 2020-10-23 | 中海石油(中国)有限公司 | Method for predicting gas-oil interface in trap based on fluid analysis and application thereof |
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| CN107246900B (en) | 2019-09-10 |
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