CN110847899A - Method and device for calculating reservoir reserves of fracture-cavity carbonate rock containing closed water body - Google Patents
Method and device for calculating reservoir reserves of fracture-cavity carbonate rock containing closed water body Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 157
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 132
- 239000011435 rock Substances 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000003921 oil Substances 0.000 claims abstract description 93
- 239000010779 crude oil Substances 0.000 claims abstract description 40
- 239000008398 formation water Substances 0.000 claims abstract description 39
- 230000003068 static effect Effects 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 29
- 238000012545 processing Methods 0.000 claims description 18
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 claims description 5
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- 239000004576 sand Substances 0.000 description 2
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Abstract
The embodiment of the invention provides a method and a device for calculating the reserve volume of a fracture-cavity carbonate rock reservoir containing a closed water bodyopVolume coefficient of original produced formation water BoiCrude oil density ρ0According to the volume V of the dynamic oil body containing the carbonate rock of the closed water bodyopVolume coefficient of original produced formation water BoiCrude oil density ρ0And calculating to obtain the reserves of the fracture-cavity carbonate rock reservoir containing the closed water body, and pushing the reserves of the reservoir, so that the reserves of the fracture-cavity carbonate rock reservoir containing the closed water body are calculated, and the accuracy of a calculation result is improved.
Description
Technical Field
The embodiment of the invention relates to the field of oilfield exploitation, in particular to a method and a device for calculating the reserve of a fracture-cavity carbonate reservoir containing a closed water body.
Background
At present, more than half of oil and gas reserves discovered in the world come from carbonate oil and gas reservoirs, and fracture-cavity carbonate oil reserves occupy a great proportion in oil and gas resources, so that the accurate prediction of the fracture-cavity carbonate oil reservoir reserves is particularly important.
In the related art, because the oil-water interface of the fracture-cavity type carbonate rock cannot be determined, and the oil and water need to be calculated integrally, the proportion of the closed water body is added into a material balance equation, the dynamic reservoir reserves of the carbonate rock can be calculated by adopting the material balance equation, and in addition, the static reservoir reserves of the carbonate rock are usually calculated by adopting a carving volume method.
However, the method for calculating the reservoir reserves of the carbonate rocks causes inaccurate calculation results and large errors.
Disclosure of Invention
The embodiment of the invention provides a method and a device for calculating the reserve of a fracture-cavity carbonate rock reservoir containing a closed water body, which aim to solve the problem of inaccurate result when the reserve of the reservoir is predicted by adopting the conventional calculation method.
In a first aspect, an embodiment of the present invention provides a method for calculating a reservoir reserve of a fracture-cavity carbonate rock containing a closed water body, including:
obtaining the dynamic oil body volume V of the fracture-cave carbonate rock containing the closed water bodyopVolume coefficient of original produced formation water BoiCrude oil density ρ0；
According to the volume V of the dynamic oil body containing the closed water body fracture-cave carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0Calculating and obtaining the reservoir reserves of the fracture-cave carbonate rock containing the closed water body;
and pushing the oil reservoir reserves.
Optionally, the obtained carbonDynamic oil volume V in sour rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0The method specifically comprises the following steps:
receiving user input of dynamic oil volume VopVolume coefficient of original produced formation water BoiCrude oil density ρ0。
Optionally, said volume V is determined according to the dynamic oil volume in said carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0And calculating and acquiring the reservoir reserves of the fracture-cave carbonate rock containing the closed water body, and the method comprises the following steps:
according to the volume V of dynamic oil bodies in the carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0By using pre-derived formulae
And calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body.
Optionally, said volume V is determined according to the dynamic oil volume in said carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0Before calculating and obtaining the fracture-cavity carbonate reservoir reserves, the method further comprises the following steps:
establishing dynamic oil body volume V of non-closed water body fracture-cave carbonate rock by adopting a material balance equation and a carving volume equationopAnd static oil volume VosFirst matching relationship V ofop＝F(Vos) Wherein, F represents the volume coefficient of the dynamic and static oil;
establishing the dynamic water volume V of the fracture-cavity carbonate rock containing the closed water body by adopting the material balance equation and the first matching relationwpAnd static water volume VwsSecond matching relation Vwp＝F(Vws) Wherein F represents the volume coefficient of the dynamic and static water.
Optionally, a formula obtained in advance is adopted
Calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body, wherein the method comprises the following steps:
establishing the dynamic volume V of the fracture-cave type carbonate rock containing the closed water body according to the first matching relation and the second matching relationpAnd a static volume VsThird matching relation Vp＝F(VsS), wherein S represents the volume percentage of the enclosed water in the enclosed water carbonate rock in the seam hole, and F represents a dynamic and static volume coefficient;
calculating to obtain the pre-obtained formula by using the third matching relationship and the material balance equation
Using pre-derived formulaeAnd calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body.
Optionally, the pushing the dynamic reserves includes:
displaying the reservoir reserves;
alternatively, the first and second electrodes may be,
and sending the oil reservoir reserves to terminal equipment of a user.
In a second aspect, an embodiment of the present invention provides a device for calculating reservoir reserves of a fracture-cavity carbonate rock containing a closed water body, including:
a processing module for obtaining the dynamic oil volume V of the closed water containing fracture-cavity carbonate rockOPVolume coefficient of original produced formation water BoiCrude oil density ρ0；
And is also used for determining the volume V of the dynamic oil body containing the closed water fracture-cavity carbonate rockOPVolume coefficient of original produced formation water BoiCrude oil density ρ0Calculating and obtaining the reservoir reserves of the fracture-cave carbonate rock containing the closed water body;
and the sending module is used for pushing the oil reservoir reserves.
Optionally, the processing module is specifically configured to receive a dynamic oil volume V input by a useropVolume coefficient of original produced formation water BoiCrude oil density ρ0。
Optionally, the processing module is specifically configured to determine the volume V of the dynamic oil bodies in the carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0By using pre-derived formulaeAnd calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body.
Optionally, the processing module is further configured to establish a dynamic oil volume V of the open water fracture-cavity carbonate rock by using a material balance equation and a carving volume equationopAnd static oil volume VosFirst matching relationship V ofop＝F(Vos) Wherein, F represents the volume coefficient of the dynamic and static oil;
establishing the dynamic water volume V of the fracture-cavity carbonate rock containing the closed water body by adopting the material balance equation and the first matching relationwpAnd static water volume VwsSecond matching relation Vwp＝F(Vws) Wherein F represents the volume coefficient of the dynamic and static water.
Optionally, the processing module is specifically configured to establish the dynamic volume V of the fracture-cavity carbonate rock containing the closed water body according to the first matching relationship and the second matching relationshippAnd a static volume VsThird matching relation Vp＝F(VsS), wherein S represents the volume percentage of the enclosed water in the enclosed water carbonate rock in the seam hole, and F represents a dynamic and static volume coefficient;
calculating to obtain the pre-obtained formula by using the third matching relationship and the material balance equation
Using pre-derived formulae
And calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body.
Optionally, the sending module is specifically configured to send the reservoir reserves to a terminal device of a user.
In a third aspect, an embodiment of the present invention provides a device for calculating a reservoir reserve, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes the computer-executable instructions stored in the memory to cause the at least one processor to perform the method for calculating the fracture-cavity carbonate reservoir reserves of the closed water body according to any one of the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and when a processor executes the computer-executable instructions, the method for calculating the reserves of the closed water fracture-cavity carbonate reservoir according to any one of the first aspect is implemented.
In the method and the device for calculating the reservoir reserves of the fracture-cavity carbonate rock containing the closed water body, the volume V of the dynamic oil body of the fracture-cavity carbonate rock containing the closed water body is obtainedOPVolume coefficient of original produced formation water BoiCrude oil density ρ0(ii) a According to the volume V of the dynamic oil body containing the closed water body fracture-cave carbonate rockOPVolume coefficient of original produced formation water BoiCrude oil density ρ0Calculating and obtaining the reservoir reserves of the fracture-cave carbonate rock containing the closed water body; and the reservoir reserves are pushed, so that the reservoir reserves of the fracture-cavity carbonate rock containing the closed water body are calculated, and the accuracy of the calculation result is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a first schematic flow chart of a method for calculating the reserve of a fracture-cavity carbonate reservoir containing a closed water body according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram II of a method for calculating the reserve of a fracture-cavity carbonate reservoir containing a closed water body according to an embodiment of the invention;
FIG. 3 is a graph showing the relationship between the volumes of the dynamic and static oil bodies of the open water fracture-cavity carbonate rock according to the embodiment of the present invention;
FIG. 4 is a diagram illustrating a relationship between the volumes of dynamic and static water bodies containing closed water fracture-cavity carbonate rocks according to an embodiment of the present invention;
FIG. 5 is a dynamic and static diagram of a fracture-cavity carbonate rock containing a closed water body according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a device for calculating the reserve of a fracture-cave carbonate reservoir containing a closed water body according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a hardware structure of a reservoir reserve calculation device according to an 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 embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, more than half of oil and gas reserves found in the world come from carbonate oil and gas reservoirs, fracture-cavity carbonate oil reserves account for a great proportion of oil and gas resources, fracture-cavity carbonate oil reserves are reserved in the early development stage and the invasion of bottom water is not considered, and the water invasion calculation is required in the process of reservoir calculation or dynamic prediction.
In addition, because the sandstone reservoir can realize an oil-water interface, the reserve of an oil part is calculated independently, but the oil-water interface of the carbonate cannot be determined, and the oil and water need to be calculated integrally, a closed water ratio parameter S is introduced, a material balance equation of the sandstone reservoir is referred to, a material balance equation suitable for the closed water fracture-cavity carbonate reservoir is obtained, and the dynamic reservoir reserve can be calculated through the material balance equation.
However, the calculation results of the above methods all have large errors, and in order to overcome the above problems, the present invention provides a method and an apparatus for calculating the reserve of a fracture-cavity carbonate reservoir containing a closed water body, which are described in detail below with reference to several specific embodiments.
Fig. 1 is a schematic flow chart of a first method for calculating the reserve of a fracture-cavity carbonate reservoir containing a closed water body according to an embodiment of the present invention, as shown in fig. 1, the method includes:
s101, obtaining the volume V of dynamic oil body containing closed water fracture-cave carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0。
In the step, the relation between the volume of the static oil body and the volume of the dynamic oil in the non-closed water body fracture-cavity type carbonate rock, the relation between the volume of the static water body and the volume of the dynamic water body in the fracture-cavity type carbonate rock containing the closed water body and a material balance equation can be combined to calculate the volume percentage of the closed water body to the fracture cavity, and then the volume V of the dynamic oil body is obtained according to the volume percentage of the closed water body to the fracture cavity and the carved effective pore volumeopWherein the engraved effective pore volume can be measured using prior art techniques. In addition, the original produced formation water volume coefficient BoiCrude oil density ρ0Can be measured using prior art techniques.
S102, according to the volume V of the dynamic oil body containing the closed water body fracture-cave carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0And calculating to obtain the reservoir reserve of the fracture-cave carbonate rock containing the closed water body.
In one implementation, the dynamic oil volume V is based on a user inputOPVolume coefficient of original produced formation water BoiCrude oil density ρ0Using a pre-obtained calculation formula
And calculating to obtain the reservoir capacity of the fracture-cave carbonate rock containing the closed water body.
S103, pushing the oil reservoir reserves.
After the oil reservoir reserves are obtained through calculation, the oil reservoir reserves can be pushed to a user, and optionally, the oil reservoir reserves are displayed, or the oil reserves are sent to terminal equipment of the user, so that the user can check the oil reservoir reserves in time.
The method for calculating the reservoir reserves of the fracture-cavity carbonate rock containing the closed water body provided by the embodiment includes the steps of obtaining the volume V of the dynamic oil body of the fracture-cavity carbonate rock containing the closed water bodyopVolume coefficient of original produced formation water BoiCrude oil density ρ0(ii) a According to the volume V of dynamic oil body containing closed water body fracture-cave carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0Calculating and obtaining the reservoir reserves of the fracture-cavity carbonate rock containing the closed water body; and the reservoir reserves are pushed, so that the reservoir reserves of the fracture-cavity carbonate rock containing the closed water body are calculated, and the accuracy of the calculation result is improved.
Fig. 2 is a schematic flow chart of a second method for calculating the reserve of a fracture-cavity carbonate reservoir containing a closed water body according to an embodiment of the present invention, and as shown in fig. 2, in another implementation manner of the scheme, the method specifically includes:
s201, establishing dynamic oil body volume V of the non-closed water body fracture-cavity type carbonate rock by adopting a material balance equation and a carving volume equationopAnd static oil volume VosFirst matching relationship V ofop＝F(Vos)。
Because no water body exists in the fracture-cave type carbonate rock without the closed water body type, the volume V of the dynamic oil body can be calculated according to a material balance equationopThe material balance equation is shown as formula (1):
wherein N ispIs the cumulative yield of crude oil, unit: ten thousand tons;
B0the volume coefficient and dimensionless of the produced formation crude oil is obtained;
Wpthe cumulative output of the water body is as follows: ten thousand tons;
BWthe volume coefficient of produced formation water is dimensionless;
n is the dynamic reserve of the oil reservoir, unit: ten thousand tons;
Boithe volume coefficient of the originally produced formation water is dimensionless;
C0is the compression coefficient of crude oil in MPa-1；
S is the volume percentage of the closed water body in the slot and is dimensionless;
CWis the formation water compressibility, in units: MPa of-1；
Δ P is the reservoir pressure drop or production pressure differential, in units: MPa.
Other parameters in the formula (1) are known, the dynamic reserve N of the oil reservoir can be obtained, and the volume V of the dynamic oil body is obtained according to the formula (2)op：
Where ρ is0Crude oil density, unit: ton/square.
The effective pore volume V of the carving of the fracture-cave carbonate rock without the closed water bodySIs static oil volume VosThus static oil volume VosAre known.
In the step, typical fracture-cave carbonate rocks without closed water bodies are selected for experiment, and a large number of data experiments are adopted to establish VosAnd VopReferring to table 1, table 1 shows experimental data of typical open water fracture-cave carbonate rocks.
TABLE 1
Fitting V according to the experimental data in Table 1osAnd VopFig. 3 is a relational graph of the volumes of the dynamic and static oil bodies of the non-closed water body fracture-cavity carbonate rock according to the embodiment of the present invention, and as shown in fig. 3, the volume V of the dynamic oil body is obtainedopAnd static oil volume VosFirst matching relationship V ofop＝F(Vos) Is a Vop＝0.7512Vos、Vos＝1.3234Vop。
S202, establishing dynamic water volume V containing closed water body fracture-cavity carbonate rock by adopting a material balance equation and a first matching relationwpAnd static water volume VwsSecond matching relation Vwp＝F(Vws)。
Because the oil-water interface of the fracture-cavity carbonate rock containing the closed water body can not be determined and the material balance equation can not be utilized to calculate the reservoir reserves, the oil-water interface of the fracture-cavity carbonate rock containing the closed water body is determined by adopting the existing static carving technology of the fracture-cavity body, and then the static oil body volume V is obtainedosThe following is determined according to equation (3):
Ns＝VosSoiρ0/Boi(3)
wherein N issRepresenting the reserve volume and S of the fracture-cave type carbonate rock containing closed wateroiRepresenting the water volume coefficient, ρ, of the originally produced formation0Represents the crude oil density, BoiIs the original produced formation water volume factor.
Calculating and solving the volume V of the static water body according to a formula (4)ws：
Vs＝Vws+Vos(4)
Wherein Vs represents the carving effective pore volume of the fracture-cavity carbonate rock containing the closed water body and is a known value, so that the static water volume V can be calculated according to the formula (4)ws. According to static oil volume VosAnd the first matching relation in S202 is calculated to obtain the volume V of the dynamic oil bodyop。
Further, calculating and solving the dynamic reserve N of the oil reservoir by adopting a formula (2), calculating and solving the volume percentage S of the closed water body occupying the fracture-cavity according to a material balance equation of the formula (1), and finally calculating and solving the dynamic water volume V according to a formula (5)wp。
Vwp＝Vs·S (5)
In the step, typical fracture-cave carbonate rocks without closed water bodies are selected for experiment, and a large number of data experiments are adopted to establish VwpAnd VwsReferring to table 2, table 2 is the experimental data of typical fracture-cave carbonate rock containing closed water.
TABLE 2
Fitting V according to the experimental data in Table 2wpAnd VwsFig. 4 is a relationship diagram of dynamic and static water volumes of the confined water fracture-cavity carbonate rock provided in the embodiment of the present invention, as shown in fig. 4, a dynamic water volume VwpAnd static water volume VwsSecond matching relation Vwp＝F(Vws) Is a Vwp＝1.3055Vws、Vws＝0.7633Vwp。
S203, establishing a dynamic volume V of the fracture-cave type carbonate rock containing the closed water body according to the first matching relation and the second matching relationpAnd a static volume VsThird matching relationship Vp＝F(VS,S)。
According to the first matching relationship and the second matching relationship, furtherEstablishing Vp＝F(VSAnd S), wherein S represents the volume percentage of the enclosed water in the enclosed water carbonate rock in the seam hole, and F represents the dynamic and static volume coefficient.
Fig. 5 is a dynamic and static schematic diagram of a fracture-cavity carbonate rock containing a closed water body provided in an embodiment of the present invention, and referring to fig. 5, a formula (6) is established:
substituting the first matching relationship and the second matching relationship into formula (6) to derive:
introducing S, such as formula (8) and formula (9):
the third matching relation V is obtained according to the formulas (7), (8) and (9)p＝F(VS,S)：
S204, calculating to obtain a pre-obtained formula by adopting a third matching relation and a material balance equation
And (3) combining the material balance equation and the formula (10), deducing that S and Vp simultaneously satisfy the following functional relationship, such as the formula (11):
then, the S and V can be obtained from the formulas (10), (11)sAnd a calculation formula related to the dynamic parameter, such as formula (12):
combining equation (10), V can be obtainedop＝F(VsS) as in formula (13):
in this step, S, V is calculated according to the formulas (12) and (13)opAnd obtaining a calculation formula of the reservoir reserves of the fracture-cavity carbonate rock containing the closed water body:
s205, adopting a formula acquired in advance
And calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body.
V to be obtained by calculationopAnd a known value Boi、ρ0And inputting the data into a formula (14) to calculate the reservoir reserves of the fracture-cavity carbonate rock containing the closed water body.
In the method for calculating the reservoir reserves of the closed water body fracture-cavity carbonate rock provided by the embodiment, the dynamic oil body volume V of the non-closed water body fracture-cavity carbonate rock is established by adopting a material balance equation and a carving volume equationopAnd static oil volume VosFirst matching relationship V ofop＝F(Vos) And establishing dynamic water volume V of the fracture-cavity carbonate rock containing the closed water body by adopting a material balance equation and a first matching relationwpAnd static water volume VwsSecond matching relation Vwp＝F(Vws) Then establishing a dynamic volume V of the fracture-cavity type carbonate rock containing the closed water body according to the first matching relation and the second matching relationpAnd a static volume VsThird matching relation Vp＝F(VSS), calculating to obtain a formula obtained in advance by adopting a third matching relation and a material balance equation
Using pre-derived formulae
The reserve capacity of the fracture-cavity carbonate rock reservoir containing the closed water body is obtained through calculation, the reserve capacity of the fracture-cavity carbonate rock reservoir containing the closed water body is calculated, and the accuracy of a calculation result is improved.
Fig. 6 is a schematic structural diagram of a device for calculating the reserve of the fracture-cavity carbonate reservoir containing a closed water body according to an embodiment of the present invention, and as shown in fig. 6, a device 60 for calculating the reserve of the fracture-cavity carbonate reservoir containing a closed water body includes:
a processing module 601 for obtaining the dynamic oil volume V of the closed water containing fracture-cavity carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0；
The processing module 601 is further used for processing the dynamic oil body volume V of the fracture-cavity carbonate rock containing the closed water bodyopVolume coefficient of original produced formation water BoiCrude oil density ρ0Calculating and obtaining the reservoir reserves of the fracture-cave carbonate rock containing the closed water body;
a sending module 602, configured to push the reservoir reserves.
Optionally, the processing module 601 is specifically configured to receive a dynamic oil volume V input by a useropVolume coefficient of original produced formation water BoiCrude oil density ρ0。
Optionally, the processing module 601 is specifically configured to determine the volume V of the dynamic oil bodies in the carbonate rock according to the volume V of the dynamic oil bodies in the carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0By using pre-derived formulae
And calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body.
Optionally, the processing module 601 is further configured to establish a dynamic oil volume V of the closed water fracture-cavity carbonate rock by using a material balance equation and a carving volume equationopAnd static oil volume VosFirst matching relationship V ofop＝F(Vos) Wherein, F represents the volume coefficient of the dynamic and static oil;
establishing the dynamic water volume V of the fracture-cavity carbonate rock containing the closed water body by adopting the material balance equation and the first matching relationwpAnd static water volume VwsSecond matching relation Vwp＝F(Vws) Wherein F represents the volume coefficient of the dynamic and static water.
Optionally, the processing module 601 is specifically configured to establish the dynamic volume V of the closed water containing fracture-cavity carbonate rock according to the first matching relationship and the second matching relationshippAnd a static volume VsThird matching relation Vp＝F(VsS), wherein S represents the volume percentage of the enclosed water in the enclosed water carbonate rock in the seam hole, and F represents a dynamic and static volume coefficient;
calculating to obtain the pre-obtained formula by using the third matching relationship and the material balance equation
Using pre-derived formulae
And calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body.
Optionally, the sending module 602 is specifically configured to send the reservoir reserves to a terminal device of a user.
The apparatus provided in this embodiment may be used to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
Fig. 7 is a schematic diagram of a hardware structure of a device for calculating a reservoir reserve according to an embodiment of the present invention, and as shown in fig. 7, the device 70 for calculating a reservoir reserve according to this embodiment includes: a processor 701 and a memory 702, wherein:
a memory 702 for storing computer-executable instructions;
the processor 701 is configured to execute the computer-executable instructions stored in the memory to implement the steps of the above-described embodiments. Reference may be made in particular to the description relating to the method embodiments described above.
Alternatively, the memory 702 may be separate or integrated with the processor 601.
When the memory 702 is separately provided, the voice interaction device further comprises a bus 703 for connecting the memory 702 and the processor 701.
The embodiment of the invention also provides a computer-readable storage medium, wherein a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the calculation method of the reservoir capacity of the fracture-cave type carbonate rock containing the closed water body is realized.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.
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 the reserve volume of a fracture-cave carbonate reservoir containing a closed water body is characterized by comprising the following steps:
obtaining the dynamic oil body volume V of the fracture-cave carbonate rock containing the closed water bodyopVolume coefficient of original produced formation water BoiCrude oil density ρ0；
According to the volume V of the dynamic oil body containing the closed water body fracture-cave carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0Calculating and obtaining the reservoir reserves of the fracture-cave carbonate rock containing the closed water body;
and pushing the oil reservoir reserves.
2. The method of claim 1, wherein the obtaining of the dynamic oil body volume V in the carbonate rockOPVolume coefficient of original produced formation water BoiCrude oil density ρ0The method specifically comprises the following steps:
receiving user input of dynamic oil volume VopVolume coefficient of original produced formation water BoiCrude oil density ρ0。
3. The method of claim 1, wherein said determining is based on a dynamic oil body volume V in said carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0And calculating and acquiring the reservoir reserves of the fracture-cave carbonate rock containing the closed water body, and the method comprises the following steps:
according to the volume V of dynamic oil bodies in the carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0By using pre-derived formulae
And calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body.
4. According to claimThe method of 1, wherein said method is based on the dynamic oil body volume V in said carbonate rockopVolume coefficient of original produced formation water BoiCrude oil density ρ0Before calculating and obtaining the fracture-cavity carbonate reservoir reserves, the method further comprises the following steps:
establishing dynamic oil body volume V of non-closed water body fracture-cave carbonate rock by adopting a material balance equation and a carving volume equationopAnd static oil volume VosFirst matching relationship V ofop＝F(Vos) Wherein, F represents the volume coefficient of the dynamic and static oil;
establishing the dynamic water volume V of the fracture-cavity carbonate rock containing the closed water body by adopting the material balance equation and the first matching relationwpAnd static water volume VwsSecond matching relation Vwp＝F(Vws) Wherein F represents the volume coefficient of the dynamic and static water.
5. The method of claim 3, wherein said employing a pre-obtained formulaCalculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body, wherein the method comprises the following steps:
establishing the dynamic volume V of the fracture-cave type carbonate rock containing the closed water body according to the first matching relation and the second matching relationpAnd a static volume VsThird matching relation Vp＝F(VsS), wherein S represents the volume percentage of the enclosed water in the enclosed water carbonate rock in the seam hole, and F represents a dynamic and static volume coefficient;
calculating to obtain the pre-obtained formula by using the third matching relationship and the material balance equation
Using pre-derived formulae
And calculating to obtain the reservoir reserves of the fracture-cave carbonate rock containing the closed water body.
6. The method of any of claims 1 to 5, wherein pushing the dynamic reserve comprises:
displaying the reservoir reserves;
alternatively, the first and second electrodes may be,
and sending the oil reservoir reserves to terminal equipment of a user.
7. The utility model provides a contain accounting device of closed water fracture-cavity type carbonate rock oil reservoir reserves which characterized in that includes:
a processing module for obtaining the dynamic oil volume V of the closed water containing fracture-cavity carbonate rockOPVolume coefficient of original produced formation water BoiCrude oil density ρ0；
The processing module is also used for processing the dynamic oil body volume V of the fracture-cavity carbonate rock containing the closed water bodyOPVolume coefficient of original produced formation water BoiCrude oil density ρ0Calculating and obtaining the reservoir reserves of the fracture-cave carbonate rock containing the closed water body;
and the sending module is used for pushing the oil reservoir reserves.
8. The apparatus of claim 7, wherein the processing module is specifically configured to receive a user-input dynamic volume of oil VopVolume coefficient of original produced formation water BoiCrude oil density ρ0。
9. A reservoir reserve computing device, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of calculating the confined water body fracture-vug carbonate reservoir reserves of any one of claims 1 to 6.
10. A computer readable storage medium having stored thereon computer executable instructions which, when executed by a processor, implement the method of calculating the fracture-cavity carbonate reservoir reserves of the confined water body of any one of claims 1 to 6.
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