CN107015289B - Trap evaluation stock number determines method and device - Google Patents
Trap evaluation stock number determines method and device Download PDFInfo
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- CN107015289B CN107015289B CN201610059924.8A CN201610059924A CN107015289B CN 107015289 B CN107015289 B CN 107015289B CN 201610059924 A CN201610059924 A CN 201610059924A CN 107015289 B CN107015289 B CN 107015289B
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Abstract
The present invention provides a kind of Trap evaluation stock number and determines method and device, wherein method includes obtaining trap effective volume and unit reserve factor；It according to trap effective volume and unit reserve factor, calculates and obtains Trap evaluation stock number, wherein Trap evaluation stock number is the product of trap effective volume and unit reserve factor.This method need to only obtain trap effective volume and unit reserve factor and can calculate Trap evaluation stock number, it solves Trap evaluation Resources calculation parameter and obtains the drawback for inaccurately causing calculated result deviation big, solid foundation has been established for objective, reasonable estimation Trap evaluation stock number, has further been conducive to Exploration planning and works out and exploration investment decision.
Description
Technical field
The present invention relates to oil-gas exploration technical fields more particularly to a kind of Trap evaluation stock number to determine method and device.
Background technique
Estimation Trap evaluation stock number is to carry out the main task of Target For Drilling Potential Evaluation, although the oil that trap is contained
Air volume is objective reality, but is limited by the prior art and economic condition that it is accurate that the exploration phase can not directly measure acquisition
Oil gas volume, can only by indirect means obtain trap correlation geologic parameter, estimate Trap evaluation stock number size.Therefore,
Calculation method is reasonably selected, objectively the oily scale of quantitative assessment trap is the core of TRAP RESERVE estimation.Exploration
Early stage causes Trap evaluation Resources calculation parameter to be difficult to take standard, therefore provide in Trap evaluation since geologic information is less
The case where source is measured in evaluation procedure, generally existing excessively high estimation Trap evaluation stock number.
Common Trap evaluation Resources calculation method has volumetric method and analogy method, and wherein volumetric method is most widely used,
This method is suitable for the meter of different exploration and development stages, different Trap Typesofs and different Storage category Trap evaluation stock numbers
It calculates, calculating mathematical formulae is Q=A × Ca × Hf × SNF, and A is trap area, and Ca is oil-containing (or gas) area coefficient, and Hf is
Oily (or gas) layer effective thickness, SNF is unit reserve factor.The degree of reliability that volumetric method calculates Trap evaluation stock number depends on geology
The quality and quantity of data.It generallys use arithmetic mean method, the area weighing method or experience value method and determines oil-containing (gas) area, oil
(gas) layer effective thickness and unit reserve factor relevant parameter, to calculate Trap evaluation stock number.Trap evaluation Resources calculation
Key is to reasonably determine oil-containing (gas) area, oil (gas) layer effective thickness and unit reserve factor.
From the point of view of current investigative technique level, determine that there are no formed to unite for the parameter of Trap evaluation Resources calculation
One, strong operability and determining method with high accuracy, so the Trap evaluation stock number and reality that are estimated using existing method
Situation differs greatly, and works out and exploration investment decision to directly affect Exploration planning.
Summary of the invention
The present invention provides a kind of Trap evaluation stock number and determines method and device, to solve estimation side in the prior art
The technical issues of method precision is low, and the Trap evaluation stock number estimated and actual conditions is made to differ greatly.
One aspect of the present invention provides a kind of Trap evaluation stock number and determines method, comprising:
Obtain trap effective volume and unit reserve factor；
According to trap effective volume and unit reserve factor, calculates and obtain Trap evaluation stock number, wherein Trap evaluation stock number
For the product of trap effective volume and unit reserve factor.
Further, trap effective volume is obtained, is specifically included:
According to push up deep data to, bottom depth data to and oil interface depth, obtain trap total volume, wherein the top depth number
According to for reservoir top surface area value and corresponding reservoir top surface depth value, the bottom depth data are to for reservoir base area value and right
The reservoir bottom surface depth value answered；
Reservoir net-gross ratio is obtained according to log；
It is calculated according to trap total volume and reservoir net-gross ratio and obtains trap effective volume, wherein trap effective volume is circle
Close the product of total volume Yu reservoir net-gross ratio.
Further, unit reserve factor is obtained according to geologic information, specifically included:
According to unit reserve factor formula S NF=100 × φ × (1-Sw)×ρoi/βoiIt calculates and obtains unit reserve factor, wherein φ is
Porosity, SwFor water saturation, ρoiFor oil density, βoiOriginal oil volume factor.
Further, according to push up deep data to, bottom depth data to and oil interface depth, obtain trap total volume, it is specific to wrap
It includes:
Obtain multiple groups top depth data to and multiple groups bottom depth data pair；
It is drawn in area-depth figure and pushes up deep data point and bottom depth data point, wherein the deep data point in the top is deep to push up
The reservoir top surface area value of data centering is abscissa, the point that reservoir top surface depth value is ordinate, and the bottom depth data point is
It is the point of ordinate, area-depth figure by abscissa, reservoir bottom surface depth value of the reservoir base area value of bottom depth data centering
To be vertical using reservoir top surface area value or reservoir base area value as abscissa, reservoir top surface depth value or reservoir bottom surface depth value
The rectangular coordinate system of coordinate；
Respectively according to deep data point, bottom depth data point acquisition reservoir top circle and reservoir bottom circle is pushed up, reservoir top circle is each
The line of deep data point is pushed up, reservoir bottom circle is the line of each bottom depth data point；
Oil interface depth is obtained, and oil interface depth line, the oil are drawn in area-depth figure according to oil interface depth
Interface depth line is the straight line that ordinate is oil interface depth；
Trap total volume is obtained according to reservoir top circle, reservoir bottom circle, oil interface depth line, wherein trap total volume is storage
The area of a polygon that Ceng Ding circle, reservoir bottom circle, oil interface depth line and axis of ordinates surround.
Further, deep data are pushed up, 5 is at least to the number with bottom depth data pair.
Further, pushing up deep data is 10 to the number with bottom depth data pair.
Further, after obtaining trap effective volume, the method also includes,
Obtain trap area and oil area coefficient；
It is calculated according to trap area and oil area coefficient and obtains trap oil area, wherein trap oil area is circle
Close the product of area and oil area coefficient；
It is calculated according to trap effective volume and trap oil area, obtains oil reservoir average effective caliper, wherein oil reservoir is average
Effective thickness is the quotient of trap effective volume and trap oil area.
Another aspect of the present invention provides a kind of Trap evaluation stock number determining device, comprising:
Trap effective volume obtains module, for obtaining trap effective volume；
Unit reserve factor obtains module, is used for unit reserve factor；
Trap evaluation stock number obtains module, for calculating with obtaining trap according to trap effective volume and unit reserve factor
Matter stock number, wherein Trap evaluation stock number is the product of trap effective volume and unit reserve factor.
Further, trap effective volume obtains module, specifically includes,
Trap total volume obtains module, for according to push up deep data to, bottom depth data to and oil interface depth, obtain trap
Total volume, wherein the deep data in the top are to for reservoir top surface area value and corresponding reservoir top surface depth value, the bottom depth data
To for reservoir base area value and corresponding reservoir bottom surface depth value；
Reservoir net-gross ratio obtains module, for obtaining reservoir net-gross ratio according to log；
Trap effective volume computing module obtains the effective body of trap for calculating according to trap total volume and reservoir net-gross ratio
Product, wherein trap effective volume is the product of trap total volume and reservoir net-gross ratio.
Further, trap total volume obtains module, specifically includes,
Data acquisition submodule, for obtain multiple groups top depth data to and multiple groups bottom depth data pair；
Data point rendering submodule pushes up deep data point and bottom depth data point for drawing in area-depth figure, wherein institute
It states and pushes up deep data point to be abscissa, reservoir top surface depth value for ordinate using the reservoir top surface area value for pushing up deep data centering
Point, it is vertical that the bottom depth data point, which is by abscissa, reservoir bottom surface depth value of the reservoir base area value of bottom depth data centering,
The point of coordinate, area-depth figure are using reservoir top surface area value or reservoir base area value as abscissa, reservoir top surface depth value
Or reservoir bottom surface depth value is the rectangular coordinate system of ordinate；
First boundary acquisition submodule, for obtaining reservoir top circle and storage according to the deep data point in top, bottom depth data point respectively
Ceng Di circle, reservoir top circle are each line for pushing up deep data point, and reservoir bottom circle is the line of each bottom depth data point；
The second boundary acquisition submodule, for obtaining oil interface depth, and according to oil interface depth in area-depth figure
Oil interface depth line is drawn, the oil interface depth line is the straight line that ordinate is oil interface depth；
Trap total volume meter operator module, for total according to reservoir top circle, reservoir bottom circle, the acquisition trap of oil interface depth line
Volume, wherein trap total volume is the polygon facet that reservoir top circle, reservoir bottom circle, oil interface depth line and axis of ordinates surround
Product.
Trap evaluation stock number provided by the invention determines method and device, by multiplying for trap effective volume and unit reserve factor
Product is used as Trap evaluation stock number, needs to obtain four parameters when calculating Trap evaluation stock number compared to the prior art, this
Method need to only obtain trap effective volume and unit reserve factor and can calculate Trap evaluation stock number, solve Trap evaluation
Resources calculation parameter obtains the drawback for inaccurately causing calculated result deviation big, provides for objective, reasonable estimation Trap evaluation
Source amount has established solid foundation, is further conducive to Exploration planning and works out and exploration investment decision.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein:
Fig. 1 is the flow diagram that method is determined according to the Trap evaluation stock number of the embodiment of the present invention one；
Fig. 2 is the flow diagram that method is determined according to the Trap evaluation stock number of the embodiment of the present invention two；
Fig. 3 is that the deep data in corresponding top are obtained according to the reservoir top surface structural map of the embodiment of the present invention two to schematic diagram；
Fig. 4 is to determine schematic diagram according to the trap total volume of the embodiment of the present invention two；
Fig. 5 is the structural schematic diagram according to the Trap evaluation stock number determining device of the embodiment of the present invention three；
Fig. 6 is the structural schematic diagram according to the Trap evaluation stock number determining device of the embodiment of the present invention four.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Embodiment one
Fig. 1 is the flow diagram that method is determined according to the Trap evaluation stock number of the embodiment of the present invention one, such as Fig. 1 institute
Show, the present embodiment provides a kind of Trap evaluation stock numbers to determine method, comprising:
Step 101, trap effective volume and unit reserve factor are obtained.
Specifically, trap effective volume refers to the part volume within the scope of trap with industrial oil productive capacity.Single storage system
Number refers to that oily (gas) hides oil in place contained by interior unit bodies oil accumulation (gas) layer.Generally use the every sq-km area of every rice bran oil layer
Interior contained oil in place indicates.
Step 102, it according to trap effective volume and unit reserve factor, calculates and obtains Trap evaluation stock number, wherein trap
Matter stock number is the product of trap effective volume and unit reserve factor.
Specifically, Trap evaluation stock number is the oil in place within the scope of trap, by trap effective volume and single storage system
Several products is as Trap evaluation stock number.
Trap evaluation stock number provided by the invention determines method, using trap effective volume and the product of unit reserve factor as
Trap evaluation stock number needs to obtain four parameters when calculating Trap evaluation stock number compared to the prior art, and this method is only
Trap effective volume and unit reserve factor, which need to be obtained, to calculate Trap evaluation stock number, solve Trap evaluation stock number
Calculating parameter obtains the drawback for inaccurately causing calculated result deviation big, establishes for objective, reasonable estimation Trap evaluation stock number
Solid foundation is determined, has further been conducive to Exploration planning and works out and exploration investment decision.
Embodiment two
The present embodiment is the supplementary explanation carried out on the basis of the above embodiments.
Fig. 2 is the flow diagram that method is determined according to the Trap evaluation stock number of the embodiment of the present invention two, such as Fig. 2 institute
Show, the present embodiment provides a kind of Trap evaluation stock numbers to determine method, comprising:
Step 1011, according to push up deep data to, bottom depth data to and oil interface depth, obtain trap total volume, wherein institute
The deep data in top are stated to for reservoir top surface area value and corresponding reservoir top surface depth value, the bottom depth data are to for reservoir bottom surface face
Product value and corresponding reservoir bottom surface depth value.
Specifically, being utilized respectively reservoir top surface structural map, bottom surface structural map establishes reservoir top surface area value and corresponding storage
The deep data in top of layer top surface depth value composition are to, the bottom depth number of reservoir base area value and corresponding reservoir bottom surface depth value composition
According to right, Fig. 3 is that the deep data in corresponding top are obtained according to reservoir top surface structural map to example, as shown in figure 3, line A, line B indicate to enclose
Close boundary, for prevent oil gas continue migration shelter, line A, line B crosspoint top surface depth value be 2150 meters, face herein
Product is 0 (area of point is 0), and top surface depth value is 2200 meters, dotted line and line A, line B institute group of the area herein where 2200
At fan-shaped area, i.e. 0.8 sq-km, when top surface depth value is 2300 meters, area herein is the dotted line where 2300
With area fan-shaped composed by line A, line B, i.e. 4.3 sq-kms, and so on, multiple groups top depth data can be obtained from Fig. 3
It is right.Depth data pair in bottom are obtained using identical method in the structural map of bottom surface.
Further, step 1011 specifically includes:
Obtain multiple groups top depth data to and multiple groups bottom depth data pair；
It is drawn in area-depth figure and pushes up deep data point and bottom depth data point, wherein the deep data point in the top is deep to push up
The reservoir top surface area value of data centering is abscissa, the point that reservoir top surface depth value is ordinate, and the bottom depth data point is
It is the point of ordinate, area-depth figure by abscissa, reservoir bottom surface depth value of the reservoir base area value of bottom depth data centering
To be vertical using reservoir top surface area value or reservoir base area value as abscissa, reservoir top surface depth value or reservoir bottom surface depth value
The rectangular coordinate system of coordinate；
Respectively according to deep data point, bottom depth data point acquisition reservoir top circle and reservoir bottom circle is pushed up, reservoir top circle is each
The line of deep data point is pushed up, reservoir bottom circle is the line of each bottom depth data point；
Oil interface depth is obtained, and oil interface depth line, the oil are drawn in area-depth figure according to oil interface depth
Interface depth line is the straight line that ordinate is oil interface depth；
Trap total volume is obtained according to reservoir top circle, reservoir bottom circle, oil interface depth line, wherein trap total volume is storage
The area of a polygon that Ceng Ding circle, reservoir bottom circle, oil interface depth line and axis of ordinates surround.
Specifically, obtaining multiple groups top depth data to, bottom depth data by reservoir top surface structural map, bottom surface structural map respectively
It is right, further, pushes up deep data and 5 are at least to the number with bottom depth data pair.Preferably, push up deep data to bottom depth number
According to pair number be 10.The data taken to more, as data to the curve where the point of formation closer to truth, meter
For the data that the trap total volume of calculating is also more nearly actual value, but takes to more, workload and calculation amount are bigger, in order to flat
The accuracy that weighs and calculation amount push up deep data to best when the number with bottom depth data pair is 10.
It is drawn in area-depth figure and pushes up deep data point and bottom depth data point, i.e., using area value as abscissa, depth value
For deep data point will be pushed up in the rectangular coordinate system of ordinate and bottom depth data point is drawn out, deep data point and bottom depth data point are pushed up
It is drawn in area-depth figure, wherein area value includes top surface area value or base area value, and depth value includes top surface depth
Value or bottom surface depth value.
Using each line for pushing up deep data point as reservoir top circle, using the line of each bottom depth data point as reservoir bottom circle.It is logical
Geological analysis research is crossed, determines oil (water) interface depth, and oil interface depth is drawn according to oil interface depth in area-depth figure
Spend line, trap total volume is the area of a polygon that reservoir top circle, reservoir bottom circle, oil interface depth line and axis of ordinates surround.
Specific example is set forth below to be illustrated.Trap total volume as shown in Figure 4 determines schematic diagram.Wherein, trap is total
Volume determines by the area of a polygon that reservoir top circle a, reservoir bottom circle b, oil interface depth line c and axis of ordinates surround, oily (water)
Interface depth line is 2300 meters, and reservoir top circle a is formed the top depth data point drawn by the deep data in top of table 1, reservoir bottom circle b
The bottom depth data point drawn is formed by the bottom depth data of table 2.
Table 1
| Top surface depth value (m) | Top surface area value (km2) |
| 2150 | 0 |
| 2200 | 0.8 |
| 2250 | 2.1 |
| 2300 | 4.3 |
| 2350 | 7.1 |
| 2400 | 9.7 |
Table 2
| Bottom surface depth value (m) | Top surface area value (km2) |
| 2250 | 0 |
| 2300 | 0.8 |
| 2350 | 2.1 |
| 2400 | 4.3 |
| 2450 | 7.1 |
Step 1012, reservoir net-gross ratio is obtained according to log.Estimate that reservoir is net according to geologic informations such as logs
Hair ratio.
Step 1013, it is calculated according to trap total volume and reservoir net-gross ratio and obtains trap effective volume, wherein trap is effective
Volume is the product of trap total volume and reservoir net-gross ratio.
Trap effective volume=trap total volume × reservoir net-gross ratio
Further, after obtaining trap effective volume, the method also includes,
Obtain trap area and oil area coefficient；It is calculated according to trap area and oil area coefficient and obtains trap oil-containing
Area, wherein trap oil area is the product of trap area and oil area coefficient；Contained according to trap effective volume and trap
Oily areal calculation obtains oil reservoir average effective caliper, wherein oil reservoir average effective caliper is trap effective volume and trap oil-containing
The quotient of area.
Specifically, oily (or gas) layer effective thickness refers to the part thickness in reservoir with industrial oil productive capacity.Make
Must have two conditions for effective thickness: first is that there is moveable oil in oil reservoir；Second is that can provide out under prior art technical conditions
Hair.Oily (or gas) layer effective thickness is the lithology, electrical property, physical property standard according to effective reservoir, deducts impermeability therein
Interlayer and remaining thickness.
By trap top surface structural map or bottom surface structural map, trap area is determined, and utilize trap area and oil area
Coefficient product obtains trap oil area, and trap effective volume is oil reservoir average effective caliper divided by oil area.Pass through oil
Layer average effective caliper can estimate the trap for the oil production rate of exploitation, estimate economic benefit.
Step 1014, according to unit reserve factor formula S NF=100 × φ × (1-Sw)×ρoi/βoiIt calculates and obtains unit reserve factor,
Wherein, φ is porosity, SwFor water saturation, ρoiFor oil density, βoiOriginal oil volume factor.
Specifically, porosity, oil saturation, bottom surface oil density and original oil volume factor can be from exploration scenes
It measures.
Step 102, it according to trap effective volume and unit reserve factor, calculates and obtains Trap evaluation stock number, wherein trap
Matter stock number is the product of trap effective volume and unit reserve factor.
For details, reference can be made to describe accordingly in embodiment one for this step.
Trap evaluation stock number provided by the invention determines method, using trap effective volume and the product of unit reserve factor as
Trap evaluation stock number, needs to obtain four parameters when calculating Trap evaluation stock number compared to the prior art, and this method is logical
Crossing reservoir top surface structural map, bottom surface structural map and oil (water) interface depth can be obtained trap total volume, then total according to trap
Volume and reservoir net-gross ratio, which calculate, obtains trap effective volume, finally can be to trap according to trap effective volume and unit reserve factor
Geological resources are calculated, and the acquisition of parameter is easier in entire calculating process, and the acquisition of each parameter is more accurate, solution
Trap evaluation Resources calculation parameter in the prior art of having determined obtains drawback that is complicated and inaccurately causing calculated result deviation big,
Solid foundation has been established for objective, reasonable estimation Trap evaluation stock number, has further been conducive to Exploration planning and works out and explore
Investment decision.
Embodiment three
The present embodiment is Installation practice, to execute the method in embodiment one.
Fig. 5 is according to the structural schematic diagram of the Trap evaluation stock number determining device of the embodiment of the present invention three, such as Fig. 5 institute
Show, the present embodiment provides a kind of Trap evaluation stock number determining devices, comprising: trap effective volume obtains module 201, single storage system
Number obtains module 202 and Trap evaluation stock number obtains module 203.
Wherein, trap effective volume obtains module 201, for obtaining trap effective volume.Unit reserve factor obtains module
202, it is used for unit reserve factor.Trap evaluation stock number obtains module 203, for according to trap effective volume and unit reserve factor, meter
It calculates and obtains Trap evaluation stock number, wherein Trap evaluation stock number is the product of trap effective volume and unit reserve factor.
The present embodiment is Installation practice corresponding with embodiment one, and for details, reference can be made to the descriptions in embodiment one, herein
It repeats no more.
Trap evaluation stock number determining device provided by the invention, using trap effective volume and the product of unit reserve factor as
Trap evaluation stock number needs to obtain four parameters when calculating Trap evaluation stock number compared to the prior art, and the present apparatus is only
Trap effective volume and unit reserve factor, which need to be obtained, to calculate Trap evaluation stock number, solve Trap evaluation stock number
Calculating parameter obtains the drawback for inaccurately causing calculated result deviation big, establishes for objective, reasonable estimation Trap evaluation stock number
Solid foundation is determined, has further been conducive to Exploration planning and works out and exploration investment decision.
Example IV
The present embodiment is the supplementary explanation carried out on the basis of the above embodiments.It is that device corresponding with embodiment two is real
Apply example.
Fig. 6 is according to the structural schematic diagram of the Trap evaluation stock number determining device of the embodiment of the present invention four, such as Fig. 6 institute
Show, the present embodiment provides a kind of Trap evaluation stock number determining devices, comprising: trap effective volume obtains module 201, single storage system
Number obtains module 202 and Trap evaluation stock number obtains module 203.
Wherein, trap effective volume obtains module 201, for obtaining trap effective volume.
Trap effective volume obtains module 201, specifically includes: trap total volume obtains module 2011, reservoir net-gross ratio obtains
Modulus block 2012 and trap effective volume computing module 2013.
Wherein, trap total volume obtains module 2011, for according to push up deep data to, bottom depth data to and oil interface it is deep
Degree obtains trap total volume, wherein top depth data to for reservoir top surface area value and corresponding reservoir top surface depth value,
The bottom depth data are to for reservoir base area value and corresponding reservoir bottom surface depth value；
Reservoir net-gross ratio obtains module 2012, for obtaining reservoir net-gross ratio according to log；
Trap effective volume computing module 2013 has for calculating acquisition trap according to trap total volume and reservoir net-gross ratio
Imitate volume, wherein trap effective volume is the product of trap total volume and reservoir net-gross ratio.
Trap total volume obtains module 2011, specifically includes data acquisition submodule, data point rendering submodule, the first side
Boundary's acquisition submodule, the second boundary acquisition submodule and trap total volume meter operator module.
Wherein, data acquisition submodule, for obtain multiple groups top depth data to and multiple groups bottom depth data pair；
Data point rendering submodule pushes up deep data point and bottom depth data point for drawing in area-depth figure, wherein institute
It states and pushes up deep data point to be abscissa, reservoir top surface depth value for ordinate using the reservoir top surface area value for pushing up deep data centering
Point, it is vertical that the bottom depth data point, which is by abscissa, reservoir bottom surface depth value of the reservoir base area value of bottom depth data centering,
The point of coordinate, area-depth figure are using reservoir top surface area value or reservoir base area value as abscissa, reservoir top surface depth value
Or reservoir bottom surface depth value is the rectangular coordinate system of ordinate；
First boundary acquisition submodule, for obtaining reservoir top circle and storage according to the deep data point in top, bottom depth data point respectively
Ceng Di circle, reservoir top circle are each line for pushing up deep data point, and reservoir bottom circle is the line of each bottom depth data point；
The second boundary acquisition submodule, for obtaining oil interface depth, and according to oil interface depth in area-depth figure
Oil interface depth line is drawn, the oil interface depth line is the straight line that ordinate is oil interface depth；
Trap total volume meter operator module, for total according to reservoir top circle, reservoir bottom circle, the acquisition trap of oil interface depth line
Volume, wherein trap total volume is the polygon facet that reservoir top circle, reservoir bottom circle, oil interface depth line and axis of ordinates surround
Product.
Unit reserve factor obtains module 202, is used for unit reserve factor.
Trap evaluation stock number obtains module 203, for calculating and obtaining trap according to trap effective volume and unit reserve factor
Geological resources, wherein Trap evaluation stock number is the product of trap effective volume and unit reserve factor.
The present embodiment is Installation practice corresponding with embodiment two, and for details, reference can be made to the descriptions in embodiment two, herein
It repeats no more.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts
Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.
Claims (6)
1. a kind of Trap evaluation stock number determines method characterized by comprising
Obtain trap effective volume and unit reserve factor；
It according to trap effective volume and unit reserve factor, calculates and obtains Trap evaluation stock number, wherein Trap evaluation stock number is circle
Close the product of effective volume and unit reserve factor；
Wherein, trap effective volume is obtained, is specifically included:
Obtain multiple groups top depth data to and multiple groups bottom depth data pair；Wherein, the deep data in the top to for reservoir top surface area value with
Corresponding reservoir top surface depth value, the bottom depth data are to for reservoir base area value and corresponding reservoir bottom surface depth value；
It is drawn in area-depth figure and pushes up deep data point and bottom depth data point, wherein the deep data point in the top is to push up deep data
The reservoir top surface area value of centering is abscissa, the point that reservoir top surface depth value is ordinate, and the bottom depth data point is the bottom of with
The reservoir base area value of deep data centering is abscissa, the point that reservoir bottom surface depth value is ordinate, area-depth figure be with
Reservoir top surface area value or reservoir base area value are that abscissa, reservoir top surface depth value or reservoir bottom surface depth value are ordinate
Rectangular coordinate system；
The deep data point line in each top is formed into reservoir top circle, each bottom depth data point line is formed into reservoir bottom circle；
Oil interface depth is obtained, and oil interface depth line, the oil interface are drawn in area-depth figure according to oil interface depth
Depth line is the straight line that ordinate is oil interface depth；
Polygon is surrounded by reservoir top circle, reservoir bottom circle, oil interface depth line and axis of ordinates, the area of a polygon is circle
Close total volume；
Reservoir net-gross ratio is obtained according to log；
It is calculated according to trap total volume and reservoir net-gross ratio and obtains trap effective volume, wherein trap effective volume is that trap is total
The product of volume and reservoir net-gross ratio.
2. Trap evaluation stock number according to claim 1 determines method, which is characterized in that obtained according to geologic information single
Coefficient is stored up, is specifically included:
According to unit reserve factor formula S NF=100 × φ × (1-Sw)×ρoi/βoiIt calculates and obtains unit reserve factor, wherein φ is hole
Degree, SwFor water saturation, ρoiFor oil density, βoiOriginal oil volume factor.
3. Trap evaluation stock number according to claim 1 determines method, which is characterized in that push up deep data to bottom depth number
According to pair number be at least 5.
4. Trap evaluation stock number according to claim 1 determines method, which is characterized in that push up deep data to bottom depth number
According to pair number be 10.
5. Trap evaluation stock number described in any one of -4 determines method according to claim 1, which is characterized in that enclosed obtaining
It closes after effective volume, the method also includes,
Obtain trap area and oil area coefficient；
It is calculated according to trap area and oil area coefficient and obtains trap oil area, wherein trap oil area is trap face
Long-pending and oil area coefficient product；
It is calculated according to trap effective volume and trap oil area, obtains oil reservoir average effective caliper, wherein oil reservoir average effective
With a thickness of the quotient of trap effective volume and trap oil area.
6. a kind of Trap evaluation stock number determining device characterized by comprising
Trap effective volume obtains module, for obtaining trap effective volume, specifically includes trap total volume and obtains module, storage
Layer net-gross ratio obtains module and trap effective volume computing module；Wherein,
The trap total volume obtains module
Data acquisition submodule, for obtain multiple groups top depth data to and multiple groups bottom depth data pair；Wherein, the deep data pair in the top
For reservoir top surface area value and corresponding reservoir top surface depth value, the bottom depth data are to for reservoir base area value and corresponding
Reservoir bottom surface depth value；
Data point rendering submodule pushes up deep data point and bottom depth data point for drawing in area-depth figure, wherein the top
It is the point of ordinate that deep data point, which is to push up the reservoir top surface area value of deep data centering as abscissa, reservoir top surface depth value,
It is ordinate that the bottom depth data point, which is by abscissa, reservoir bottom surface depth value of the reservoir base area value of bottom depth data centering,
Point, area-depth figure is using reservoir top surface area value or reservoir base area value as abscissa, reservoir top surface depth value or storage
Layer bottom surface depth value is the rectangular coordinate system of ordinate；
First boundary acquisition submodule is used to the deep data point line in each top forming reservoir top circle, and is used for each bottom depth number
Strong point line forms reservoir bottom circle；
The second boundary acquisition submodule is drawn in area-depth figure for obtaining oil interface depth, and according to oil interface depth
Oil interface depth line, the oil interface depth line are the straight line that ordinate is oil interface depth；
Trap total volume meter operator module is more for surrounding reservoir top circle, reservoir bottom circle, oil interface depth line and axis of ordinates
Side shape, the area of a polygon are trap total volume；
The reservoir net-gross ratio obtains module, for obtaining reservoir net-gross ratio according to log；
The trap effective volume computing module obtains the effective body of trap for calculating according to trap total volume and reservoir net-gross ratio
Product, wherein trap effective volume is the product of trap total volume and reservoir net-gross ratio；
Unit reserve factor obtains module, for obtaining unit reserve factor；
Trap evaluation stock number obtains module, for calculating and obtaining Trap evaluation money according to trap effective volume and unit reserve factor
Source amount, wherein Trap evaluation stock number is the product of trap effective volume and unit reserve factor.
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| CN111811988B (en) * | 2020-07-14 | 2023-05-12 | 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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