CN110805425A - Crude oil compression coefficient calculation method, device, equipment and readable storage medium - Google Patents
Crude oil compression coefficient calculation method, device, equipment and readable storage medium Download PDFInfo
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Abstract
The invention provides a method, a device, equipment and a readable storage medium for calculating a compression coefficient of crude oil, wherein the method comprises the following steps: acquiring a compression coefficient calculation parameter, wherein the compression coefficient calculation parameter comprises a produced gas-oil ratio and a current formation pressure; and calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula. Therefore, the compression coefficients of crude oil under different gas-oil ratios and different formation pressures can be accurately obtained, and the accuracy of the calculated reserves of the obtained oil field is further improved.
Description
Technical Field
The invention relates to the field of petroleum exploration, in particular to a method, a device and equipment for calculating a compression coefficient of crude oil and a readable storage medium.
Background
The crude compressibility is the rate of change in volume per unit volume of formation crude as the pressure changes 101325P (one atmosphere). The crude oil compression coefficient bubble point pressure, the crude oil volume coefficient and the density are the same, the crude oil is one of important physical properties, the reserves of an oil field can be calculated by utilizing the formation crude oil compression coefficient, and further necessary basic data can be provided for formulating a development scheme and developing numerical reservoir simulation.
In the prior art, a method for calculating a crude oil compression coefficient is provided, which can calculate the crude oil compression coefficient through a formula (2) and obtain the crude oil compression coefficient under a certain fixed pressure.
Coi＝0.027Rt+8.5677 (2)
Wherein, CoiIs the compression factor of crude oil, RtFor the current production gas-oil ratio, the compression coefficient of the crude oil under the condition that P is 75-80 MPa can be realized according to the formula (1) only by testing and obtaining the current production gas-oil ratio.
However, since the formation crude oil compressibility depends on the gas-oil ratio of crude oil to natural gas, pressure, and other factors, when the pressure changes, the crude oil compressibility changes accordingly. Therefore, when the crude oil compression coefficient is calculated by adopting the method, the crude oil compression coefficient calculated by adopting the method is often not accurate enough because only the factor of the gas-oil ratio is considered, but the influence of the pressure on the crude oil compression coefficient is not considered. In addition, when the pressure is not within the range of 75-80 MPa, the crude oil compression coefficient obtained by calculation by the method cannot truly represent the real crude oil compression coefficient of the oil-gas reservoir, and the reserves of the oil field obtained by calculation according to the crude oil compression coefficient are not accurate enough.
Disclosure of Invention
The invention provides a method, a device and equipment for calculating a crude oil compression coefficient and a readable storage medium, which are used for solving the technical problem that the crude oil compression coefficient is inaccurate due to the fact that only the factor of gas-oil ratio is considered in the conventional crude oil compression coefficient calculating method and the influence of pressure on the crude oil compression coefficient is not considered.
The first aspect of the invention provides a method for calculating a compression factor of crude oil, which comprises the following steps:
acquiring a compression coefficient calculation parameter, wherein the compression coefficient calculation parameter comprises a produced gas-oil ratio and a current formation pressure;
and calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula.
Another aspect of the present invention provides a crude oil compressibility calculation apparatus, including:
the parameter acquisition module is used for acquiring compression coefficient calculation parameters, wherein the compression coefficient calculation parameters comprise a produced gas-oil ratio and a current formation pressure;
and the crude oil compression coefficient calculation module is used for calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula.
Still another aspect of the present invention provides a crude oil compressibility calculation apparatus, including: a memory, a processor;
a memory; a memory for storing the processor-executable instructions;
wherein the processor is configured to execute the crude oil compression factor calculation method as described above.
Yet another aspect of the present invention is to provide a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by a processor to implement the method for calculating a compression factor of crude oil as described above.
According to the method, the device and the equipment for calculating the compression coefficient of the crude oil and the readable storage medium, the compression coefficient calculation parameters are obtained, wherein the compression coefficient calculation parameters comprise the production gas-oil ratio and the current formation pressure; and calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula. Therefore, the compression coefficients of crude oil under different gas-oil ratios and different formation pressures can be accurately obtained, and the accuracy of the calculated reserves of the obtained oil field is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic flow chart of a method for calculating a compressibility of crude oil according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for calculating a compressibility of crude oil according to a second embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method for calculating a compressibility of crude oil according to a third embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method for calculating a compressibility of crude oil according to a fourth embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to a fifth embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to a sixth embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to a seventh embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to an eighth embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to a ninth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other examples obtained based on the examples in the present invention are within the scope of the present invention.
The crude compressibility is the rate of change in volume per unit volume of formation crude as the pressure changes 101325P (one atmosphere). The crude oil compression coefficient bubble point pressure, the crude oil volume coefficient and the density are the same, the crude oil is one of important physical properties, the reserves of an oil field can be calculated by utilizing the formation crude oil compression coefficient, and further necessary basic data can be provided for formulating a development scheme and developing numerical reservoir simulation.
In the prior art, a method for calculating a crude oil compression coefficient is provided, which can calculate the crude oil compression coefficient through a formula (2) and obtain the crude oil compression coefficient under a certain fixed pressure.
Coi＝0.027Rt+8.5677 (2)
Wherein, CoiIs the compression factor of crude oil, RtFor the current production gas-oil ratio, the compression coefficient of the crude oil under the condition that P is 75-80 MPa can be realized according to the formula (1) only by testing and obtaining the current production gas-oil ratio.
However, since the formation crude oil compressibility depends on the gas-oil ratio of crude oil to natural gas, pressure, and other factors, when the pressure changes, the crude oil compressibility changes accordingly. Therefore, when the crude oil compression coefficient is calculated by adopting the method, the crude oil compression coefficient calculated by adopting the method is often not accurate enough because only the factor of the gas-oil ratio is considered, but the influence of the pressure on the crude oil compression coefficient is not considered. In addition, when the pressure is not within the range of 75-80 MPa, the crude oil compression coefficient obtained by calculation by the method cannot truly represent the real crude oil compression coefficient of the oil-gas reservoir, and the reserves of the oil field obtained by calculation according to the crude oil compression coefficient are not accurate enough.
In order to solve the technical problem, the invention provides a method, a device, equipment and a readable storage medium for calculating a compression coefficient of crude oil.
Fig. 1 is a schematic flow chart of a method for calculating a compressibility of crude oil according to an embodiment of the present invention, as shown in fig. 1, the method includes:
In practical application, the formation crude oil compressibility depends on factors such as gas-oil ratio of crude oil and natural gas, pressure and the like, and when the pressure changes, the crude oil compressibility changes correspondingly. The current crude oil compressibility calculation method can only realize the calculation of the crude oil compressibility under certain formation pressure through the produced gas-oil ratio, and when the formation pressure changes, the crude oil compressibility obtained by continuously adopting the method is not accurate enough. Therefore, in order to accurately determine the compressibility of the crude oil, firstly, a compressibility calculation parameter needs to be obtained, and specifically, in order to obtain an accurate compressibility of the crude oil under different formation pressures, the compressibility calculation parameter includes a production gas-oil ratio and a current formation pressure.
102, calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula, wherein the preset compression coefficient calculation formula is shown as a formula (1):
wherein, R istFor producing gas oil ratio, P is current stratum pressure.
In this embodiment, after the compression coefficient calculation parameter is obtained, the crude oil compression coefficient may be calculated according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula. Specifically, when the crude oil compression coefficient is calculated, the formation pressure parameter is introduced on the basis of the existing crude oil compression coefficient calculation through the produced gas-oil ratio, and the formation pressure and the produced gas-oil ratio are input into a preset compression coefficient calculation formula, so that the crude oil compression parameter under any formation pressure can be calculated.
Specifically, the preset compression coefficient calculation formula is shown in formula 1, wherein R is the same as RtFor producing gas oil ratio, P is current stratum pressure. Because the parameters of the produced gas-oil ratio and the current formation pressure are introduced into the preset compressibility calculation formula, a user can obtain the crude oil compressibility corresponding to the current produced gas-oil ratio and the formation pressure only by inputting the current produced gas-oil ratio and the formation pressure into the formula (1). Compared with the crude oil compression coefficient determined only by the production gas-oil ratio, the formula (1) can adapt to all formation pressures, and the flexibility is high.
In the method for calculating the compression coefficient of crude oil provided by the embodiment, the compression coefficient calculation parameters are obtained, and the compression coefficient calculation parameters comprise a production gas-oil ratio and a current formation pressure; and calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula. Therefore, the compression coefficients of crude oil under different gas-oil ratios and different formation pressures can be accurately obtained, and the accuracy of the calculated reserves of the obtained oil field is further improved.
By introducing the parameters of the produced gas-oil ratio and the current formation pressure into the preset compressibility calculation formula, a user can obtain the crude oil compressibility corresponding to the current produced gas-oil ratio and the formation pressure only by inputting the current produced gas-oil ratio and the formation pressure into the preset compressibility calculation formula. Therefore, the method can adapt to all formation pressures, the flexibility is high, and in addition, as more parameters are calculated in the compression coefficient calculation formula, the crude oil compression coefficient calculated by the compression coefficient calculation formula is closer to the real crude oil compression coefficient.
Fig. 2 is a schematic flow chart of a method for calculating a compression factor of crude oil according to a second embodiment of the present invention, and based on the second embodiment, as shown in fig. 2, the method includes:
step 201, obtaining a compression coefficient calculation parameter, wherein the compression coefficient calculation parameter comprises a produced gas-oil ratio and a current formation pressure;
step 202, acquiring real crude oil compression coefficients of a stratum under different gas-oil ratios and stratum pressures;
step 203, calculating to obtain the preset compression coefficient calculation formula according to the real crude oil compression coefficients corresponding to the different gas-oil ratios and the formation pressure;
and 204, calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula.
In the present embodiment, in order to realize the calculation of the compressibility of the crude oil under different formation pressures, after the compressibility calculation parameters are obtained, a compressibility calculation formula needs to be established. Specifically, a plurality of groups of real crude oil compressibility of the stratum under different gas-oil ratios and stratum pressures can be obtained, the real crude oil compressibility corresponding to the different gas-oil ratios and stratum pressures is analyzed, and a compressibility calculation formula is obtained through calculation. After the preset compression coefficient calculation formula is obtained, the obtained current compression coefficient calculation parameters can be input into the compression coefficient calculation formula, so that the crude oil compression coefficient corresponding to the current compression coefficient calculation parameters can be obtained.
The method for calculating the compressibility of crude oil provided by this embodiment obtains a plurality of sets of real compressibility of crude oil of a formation under different gas-oil ratios and formation pressures, analyzes the real compressibility of crude oil corresponding to the different gas-oil ratios and formation pressures, and calculates to obtain a compressibility calculation formula. Thereby providing a basis for the compression coefficient of crude oil under different gas-oil ratios and formation pressures.
Fig. 3 is a schematic flow chart of a method for calculating a compressibility of crude oil according to a third embodiment of the present invention, where on the basis of any of the above embodiments, as shown in fig. 3, the method for calculating a compressibility of crude oil includes:
and 303, calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula.
In the embodiment, in order to realize the calculation of the compressibility of the crude oil under different formation pressures, the compressibility calculation parameters need to be determined and obtained first. Specifically, the content of crude oil and natural gas in the current reservoir can be determined, and the ratio between the content of crude oil and natural gas in the current reservoir is calculated and taken as the production gas-oil ratio. In addition, the current formation pressure can be measured through a preset pressure gauge, so that the compression coefficient calculation parameter can be acquired. Accordingly, after the compression coefficient calculation parameter is obtained, the compression coefficient calculation parameter can be input to the compression coefficient calculation formula, so that the crude oil compression coefficient corresponding to the current compression coefficient calculation parameter can be obtained.
In the method for calculating the compression coefficient of crude oil provided by the embodiment, the content of crude oil and natural gas in the current oil and gas reservoir is determined, and the ratio of the content of crude oil to the content of natural gas is used as the production gas-oil ratio; and measuring the current formation pressure through a preset pressure gauge, thereby providing a foundation for crude oil compression coefficients under different gas-oil ratios and formation pressures.
Fig. 4 is a schematic flow chart of a method for calculating a compression factor of crude oil according to a fourth embodiment of the present invention, and based on any of the foregoing embodiments, as shown in fig. 4, the method includes:
step 401, obtaining a compressibility calculation parameter, wherein the compressibility calculation parameter comprises a produced gas-oil ratio and a current formation pressure;
step 402, measuring real crude oil compressibility of the stratum under different gas-oil ratios and stratum pressures through experiments;
step 403, calculating to obtain the preset compression coefficient calculation formula according to the real crude oil compression coefficients corresponding to the different gas-oil ratios and the formation pressure;
and step 404, calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula.
In this embodiment, after obtaining the compressibility calculation parameter, the real crude oil compressibility of the formation under different gas-oil ratios and formation pressures may be measured through experiments, and the real crude oil compressibility corresponding to the different gas-oil ratios and formation pressures may be analyzed and calculated to obtain the compressibility calculation formula. After the preset compression coefficient calculation formula is obtained, the obtained current compression coefficient calculation parameters can be input into the compression coefficient calculation formula, so that the crude oil compression coefficient corresponding to the current compression coefficient calculation parameters can be obtained.
The method for calculating the compressibility of crude oil provided by this embodiment obtains a plurality of sets of real compressibility of crude oil of a formation under different gas-oil ratios and formation pressures, analyzes the real compressibility of crude oil corresponding to the different gas-oil ratios and formation pressures, and calculates to obtain a compressibility calculation formula. Thereby providing a basis for the compression coefficient of crude oil under different gas-oil ratios and formation pressures.
Fig. 5 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to a fifth embodiment of the present invention, as shown in fig. 5, the apparatus includes:
the parameter obtaining module 51 is configured to obtain a compressibility calculation parameter, where the compressibility calculation parameter includes a produced gas-oil ratio and a current formation pressure.
A crude oil compressibility calculation module 52, configured to calculate the crude oil compressibility according to the compressibility calculation parameter and a preset compressibility calculation formula, where the preset compressibility calculation formula is shown as formula (1):
wherein, R istFor producing gas oil ratio, P is current stratum pressure.
In practical application, the formation crude oil compressibility depends on factors such as gas-oil ratio of crude oil and natural gas, pressure and the like, and when the pressure changes, the crude oil compressibility changes correspondingly. The current crude oil compressibility calculation method can only realize the calculation of the crude oil compressibility under certain formation pressure through the produced gas-oil ratio, and when the formation pressure changes, the crude oil compressibility obtained by continuously adopting the method is not accurate enough. Therefore, in order to accurately determine the compressibility of the crude oil, the parameter obtaining module 51 first needs to obtain compressibility calculation parameters, and specifically, in order to obtain an accurate compressibility of the crude oil at different formation pressures, the compressibility calculation parameters include a production gas-oil ratio and a current formation pressure.
In this embodiment, after obtaining the compression coefficient calculation parameter, the crude oil compression coefficient calculation module 52 may calculate the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula. Specifically, when the crude oil compression coefficient is calculated, the formation pressure parameter is introduced on the basis of the existing crude oil compression coefficient calculation through the produced gas-oil ratio, and the formation pressure and the produced gas-oil ratio are input into a preset compression coefficient calculation formula, so that the crude oil compression parameter under any formation pressure can be calculated.
Specifically, the preset compression coefficient calculation formula is shown in formula 1, wherein R is the same as RtFor producing gas oil ratio, P is current stratum pressure. Because the parameters of the produced gas-oil ratio and the current formation pressure are introduced into the preset compressibility calculation formula, a user can obtain the crude oil compressibility corresponding to the current produced gas-oil ratio and the formation pressure only by inputting the current produced gas-oil ratio and the formation pressure into the formula (1). Compared with the crude oil compression coefficient determined only by the production gas-oil ratio, the formula (1) can adapt to all formation pressures, and the flexibility is high.
The crude oil compressibility calculation device provided by this embodiment calculates parameters by obtaining compressibility, where the compressibility calculation parameters include a produced gas-oil ratio and a current formation pressure; and calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula. Therefore, the compression coefficients of crude oil under different gas-oil ratios and different formation pressures can be accurately obtained, and the accuracy of the calculated reserves of the obtained oil field is further improved.
By introducing the parameters of the produced gas-oil ratio and the current formation pressure into the preset compressibility calculation formula, a user can obtain the crude oil compressibility corresponding to the current produced gas-oil ratio and the formation pressure only by inputting the current produced gas-oil ratio and the formation pressure into the preset compressibility calculation formula. Therefore, the method can adapt to all formation pressures, the flexibility is high, and in addition, as more parameters are calculated in the compression coefficient calculation formula, the crude oil compression coefficient calculated by the compression coefficient calculation formula is closer to the real crude oil compression coefficient.
Fig. 6 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to a sixth embodiment of the present invention, and based on the foregoing embodiment, as shown in fig. 6, the apparatus includes:
the parameter obtaining module 61 is configured to obtain a compressibility calculation parameter, where the compressibility calculation parameter includes a produced gas-oil ratio and a current formation pressure;
the coefficient acquisition module 62 is used for acquiring the real crude oil compression coefficient of the stratum under different gas-oil ratios and stratum pressures;
the calculation module 63 is configured to calculate and obtain the preset compression coefficient calculation formula according to the real crude oil compression coefficients corresponding to the different gas-oil ratios and the formation pressure;
and a crude oil compression coefficient calculation module 64, configured to calculate the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula.
In the present embodiment, in order to realize the calculation of the compressibility of the crude oil under different formation pressures, after the parameter obtaining module 61 obtains the compressibility calculation parameter, a compressibility calculation formula needs to be established. Specifically, the coefficient obtaining module 62 may obtain a plurality of sets of real crude oil compressibility of the formation under different gas-oil ratios and formation pressures, analyze the real crude oil compressibility corresponding to the different gas-oil ratios and the formation pressures, and calculate to obtain a compressibility calculation formula by the calculating module 63. After obtaining the preset compression coefficient calculation formula, the crude oil compression coefficient calculation module 64 may input the obtained current compression coefficient calculation parameter into the compression coefficient calculation formula, so as to obtain the crude oil compression coefficient corresponding to the current compression coefficient calculation parameter.
The crude oil compressibility calculation device provided by this embodiment obtains a plurality of sets of real crude oil compressibility of the formation under different gas-oil ratios and formation pressures, analyzes the real crude oil compressibility corresponding to the different gas-oil ratios and the formation pressures, and calculates to obtain a compressibility calculation formula. Thereby providing a basis for the compression coefficient of crude oil under different gas-oil ratios and formation pressures.
Fig. 7 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to a seventh embodiment of the present invention, as shown in fig. 7, based on any of the above embodiments, the crude oil compressibility calculation apparatus includes:
the parameter obtaining module 71 specifically includes:
a produced gas-oil ratio determining unit 701, configured to determine contents of crude oil and natural gas in a current oil and gas reservoir, and use a ratio of the contents of the crude oil and the natural gas as the produced gas-oil ratio;
a formation pressure measuring unit 702, configured to measure the current formation pressure through a preset pressure gauge;
and a crude oil compression coefficient calculation module 702, configured to calculate the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula.
In the embodiment, in order to realize the calculation of the compressibility of the crude oil under different formation pressures, the compressibility calculation parameters need to be determined and obtained first. Specifically, the production gas-oil ratio determining unit 701 may determine the content of crude oil and natural gas in the current reservoir, and calculate a ratio between the content of crude oil and natural gas in the current reservoir, and use the ratio as the production gas-oil ratio. In addition, the formation pressure measurement unit 702 may also measure the current formation pressure through a preset pressure gauge, so as to obtain the compressibility calculation parameter. Accordingly, after obtaining the compression coefficient calculation parameter, the crude oil compression coefficient calculation module 702 may input the compression coefficient calculation parameter to the compression coefficient calculation formula, so as to obtain the crude oil compression coefficient corresponding to the current compression coefficient calculation parameter.
The crude oil compression coefficient calculation device provided by this embodiment determines the contents of crude oil and natural gas in the current oil and gas reservoir, and takes the ratio of the contents of crude oil and natural gas as the production gas-oil ratio; and measuring the current formation pressure through a preset pressure gauge, thereby providing a foundation for crude oil compression coefficients under different gas-oil ratios and formation pressures.
Fig. 8 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to an eighth embodiment of the present invention, as shown in fig. 8, on the basis of any of the foregoing embodiments, the apparatus includes:
the parameter obtaining module 81 is configured to obtain compression coefficient calculation parameters, where the compression coefficient calculation parameters include a produced gas-oil ratio and a current formation pressure;
the coefficient obtaining module 82 specifically includes:
the coefficient acquisition unit 801 is used for measuring the real crude oil compression coefficient of the stratum under different gas-oil ratios and stratum pressures through experiments;
the calculation module 83 is configured to calculate and obtain the preset compression coefficient calculation formula according to the real crude oil compression coefficients corresponding to the different gas-oil ratios and the formation pressure;
and a crude oil compression coefficient calculation module 84, configured to calculate the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula.
In this embodiment, after obtaining the compressibility calculation parameter, the coefficient obtaining unit 801 may specifically measure the real crude oil compressibility of the formation under different gas-oil ratios and formation pressures through experiments, and the calculating module 83 analyzes the real crude oil compressibility corresponding to the different gas-oil ratios and the formation pressures and calculates to obtain the compressibility calculation formula. After obtaining the preset compression coefficient calculation formula, the crude oil compression coefficient calculation module 84 may input the obtained current compression coefficient calculation parameter into the compression coefficient calculation formula, so as to obtain the crude oil compression coefficient corresponding to the current compression coefficient calculation parameter.
The crude oil compressibility calculation device provided by this embodiment obtains a plurality of sets of real crude oil compressibility of the formation under different gas-oil ratios and formation pressures, analyzes the real crude oil compressibility corresponding to the different gas-oil ratios and the formation pressures, and calculates to obtain a compressibility calculation formula. Thereby providing a basis for the compression coefficient of crude oil under different gas-oil ratios and formation pressures.
Fig. 9 is a schematic structural diagram of a crude oil compressibility calculation apparatus according to a ninth embodiment of the present invention, and as shown in fig. 9, the image processing apparatus includes a memory 91 and a processor 92;
a memory 91; a memory 91 for storing instructions executable by the processor 92;
wherein the processor 92 is configured to perform the above-described method by the processor 92.
When at least a portion of the functions of the method for calculating a compression factor of crude oil according to the embodiments of the present invention are implemented by software, the embodiments of the present invention further provide a computer storage medium for storing computer software instructions for calculating a compression factor of crude oil, which, when executed on a computer, enable the computer to perform various possible methods for calculating a compression factor of crude oil according to the embodiments of the present invention. The processes or functions described in accordance with the embodiments of the present invention may be generated in whole or in part when the computer-executable instructions are loaded and executed on a computer. The computer instructions may be stored on a computer storage medium or transmitted from one computer storage medium to another via wireless (e.g., cellular, infrared, short-range wireless, microwave, etc.) to another website site, computer, server, or data center. The computer storage media may be any available media that can be accessed by a computer or a data storage device, such as a server, data center, etc., that incorporates one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., SSD), among others.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus described above may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for calculating a compression factor of crude oil, comprising:
acquiring a compression coefficient calculation parameter, wherein the compression coefficient calculation parameter comprises a produced gas-oil ratio and a current formation pressure;
calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula;
the preset compression coefficient calculation formula is shown as formula (1):
wherein, R istFor producing gas oil ratio, P is current stratum pressure.
2. The method according to claim 1, wherein before the calculating the parameter according to the compression coefficient and the predetermined compression coefficient calculation formula, further comprising:
acquiring real crude oil compression coefficients of a stratum under different gas-oil ratios and stratum pressures;
and calculating to obtain the preset compression coefficient calculation formula according to the real crude oil compression coefficients corresponding to the different gas-oil ratios and the formation pressure.
3. The method of claim 1, wherein obtaining the compression factor calculation parameter comprises:
determining the content of crude oil and natural gas in the current oil and gas reservoir, and taking the ratio of the content of the crude oil to the content of the natural gas as the production gas-oil ratio.
4. The method of claim 1, wherein obtaining the compression factor calculation parameter comprises:
and measuring the current formation pressure through a preset pressure gauge.
5. The method of claim 2, wherein the obtaining of the true crude oil compressibility of the formation at different gas to oil ratios and formation pressures comprises:
and measuring the real crude oil compressibility of the stratum under different gas-oil ratios and stratum pressures through experiments.
6. A crude oil compressibility calculation apparatus, comprising:
the parameter acquisition module is used for acquiring compression coefficient calculation parameters, wherein the compression coefficient calculation parameters comprise a produced gas-oil ratio and a current formation pressure;
the crude oil compression coefficient calculation module is used for calculating the crude oil compression coefficient according to the compression coefficient calculation parameter and a preset compression coefficient calculation formula;
the preset compression coefficient calculation formula is shown as formula (1):
wherein, R istFor producing gas oil ratio, P is current stratum pressure.
7. The apparatus of claim 6, further comprising:
the coefficient acquisition module is used for acquiring the real crude oil compression coefficient of the stratum under different gas-oil ratios and stratum pressures;
and the calculation module is used for calculating and obtaining the preset compression coefficient calculation formula according to the real crude oil compression coefficients corresponding to the different gas-oil ratios and the formation pressure.
8. The apparatus of claim 6, wherein the parameter obtaining module comprises:
and the production gas-oil ratio determining unit is used for determining the content of crude oil and natural gas in the current oil and gas reservoir and taking the ratio of the content of the crude oil to the content of the natural gas as the production gas-oil ratio.
9. A crude oil compressibility calculation apparatus, comprising: a memory, a processor;
a memory; a memory for storing the processor-executable instructions;
wherein the processor is configured to perform the crude oil compressibility calculation method of any of claims 1-5 by the processor.
10. A computer-readable storage medium having stored thereon computer-executable instructions for implementing the method of calculating a compression factor of crude oil according to any one of claims 1 to 5 when executed by a processor.
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