CN113742633A - Method, device, electronic device and medium for obtaining rock skeleton - Google Patents
Method, device, electronic device and medium for obtaining rock skeleton Download PDFInfo
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- 239000011435 rock Substances 0.000 title claims abstract description 276
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 238000005553 drilling Methods 0.000 description 11
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- 240000001987 Pyrus communis Species 0.000 description 4
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- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
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Abstract
The invention discloses a method, a device, electronic equipment and a medium for obtaining a rock skeleton, wherein the method comprises the following steps: respectively obtaining various mineral contents of a plurality of rock samples; obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples; and calculating the mixed rock skeleton value of the reservoir based on the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral. The method obtains the contents of various minerals of a plurality of rock samples by utilizing the rock mineral components, obtains the proportion of each mineral in a reservoir, obtains the mixed rock skeleton value of the reservoir by calculation according to the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral, and accurately obtains the rock skeleton value of a complex reservoir, thereby achieving the purpose of accurately calculating the porosity of the reservoir.
Description
Technical Field
The invention belongs to the field of oil and gas field exploration and development, and particularly relates to a method and a device for solving a rock skeleton by utilizing rock mineral components, electronic equipment and a medium.
Background
The rock skeleton is a basic parameter for accurately calculating the porosity of a reservoir, and is obtained mainly through experiments, namely measurement of single mineral. Generally speaking, carbonate rock or long-distance transported sedimentary rock mineral has a stable rock skeleton, and accurate reservoir porosity can be obtained by directly applying experimental results when reservoir porosity is calculated and inputting the rock skeleton.
For fast near source sedimentary reservoirs or volcanic reservoirs, the rock framework is often difficult to determine because the minerals in the sedimentary rock change regularly with the distance of the hydrodynamic transport distance. Wherein, the weathering resistance of the quartz mineral is strongest, the carrying distance is farthest, feldspar is second, and the rock debris is weakest. Therefore, the near-source sedimentary reservoir has higher content of rock debris or feldspar, various minerals in the rock debris are related to the parent rock substances, and the rock framework of the reservoir is a mixed framework which is related to short sedimentary transport distance and certain storage quantity of the rock debris substances in a certain geological history period. Volcanic rock, as it is built in situ, is derived from the mantle or crust, and is therefore also a "mixed skeleton", with different sources of material (crust or mantle), and with differences in the same type of rock skeleton, which is associated with the supply of parent rock in the crust or mantle.
The mixed skeleton is usually obtained by reading the curve value of reservoir porosity approaching zero in the porosity curve. However, this method is difficult to apply when several situations are encountered. Firstly, when skeleton points with porosity approaching zero are difficult to find in a logging curve, the mixed skeleton value is difficult to determine; secondly, when the well diameter is expanded to cause the distortion of the logging curve part, it is difficult to select which porosity curves can accurately calculate the porosity; thirdly, when rock debris minerals in the reservoir are complex and the logging responses of three porosity curves (sound waves, density and neutrons) are inconsistent due to the special framework characteristics of the minerals, the rock framework of the reservoir cannot be easily determined; fourthly, the drilling fluid material is complex, and the rock skeleton of the reservoir cannot be easily determined when the drilling fluid material cannot be determined to interfere with the three porosity logging curve values; and fifthly, when the core of the high-temperature and high-pressure stratum of the reservoir is difficult to be extracted, only the method is adopted, and an accurate verification means is lacked.
The five factors show that for the complex reservoir stratum of today, other new methods for acquiring the rock skeleton of the reservoir stratum need to be explored.
Disclosure of Invention
The invention aims to provide a method, a device, electronic equipment and a medium for solving a rock framework by utilizing rock mineral components, which can accurately obtain a rock framework value of a complex reservoir.
In view of the above, the present invention provides a method, an apparatus, an electronic device, and a medium for obtaining a rock skeleton from rock mineral components, which at least solve the problem of accurately obtaining a rock skeleton value of a complex reservoir at present.
In a first aspect, the present invention provides a method of using rock mineral composition to find a rock skeleton, comprising: respectively obtaining various mineral contents of a plurality of rock samples; obtaining a proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples; and calculating a mixed rock skeleton value of the reservoir based on the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
Optionally, the respectively obtaining the plurality of mineral contents of the plurality of rock samples includes: and for each rock sample, performing mineral content analysis on the slices of the rock sample to obtain a plurality of mineral contents of each rock sample.
Optionally, the obtaining a proportion of each mineral in the reservoir based on a content of each mineral in the plurality of rock samples comprises: for each mineral, taking an average of the mineral content of a plurality of rock samples, and taking the average as the proportion of the mineral in the reservoir.
Optionally, the obtaining a proportion of each mineral in the reservoir based on a content of each mineral in the plurality of rock samples comprises: combining a plurality of minerals with the same skeleton into one mineral, and summing the proportions of the plurality of minerals with the same skeleton in the reservoir together, wherein the sum is used as the proportion of the one mineral in the reservoir.
Optionally, the mixed rock skeleton value of the reservoir is obtained by using the following formula:
wherein f is the mixed rock skeleton value of the reservoir, n is the type of the mineral, a is the mineral skeleton value corresponding to the mineral, and x is the proportion of the mineral in the reservoir.
In a second aspect, the present invention also provides an electronic device, including: a memory storing executable instructions; a processor executing the executable instructions in the memory to implement the above method of using rock mineral composition to find a rock skeleton.
In a third aspect, the present invention also provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the above method for finding a rock skeleton from rock mineral components.
In a fourth aspect, the present invention also provides an apparatus for determining a rock skeleton from rock mineral components, comprising: the mineral content acquisition module is used for respectively acquiring various mineral contents of a plurality of rock samples; the mineral reservoir proportion acquisition module is used for acquiring the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples; and the calculation module is used for calculating the mixed rock skeleton value of the reservoir based on the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
Optionally, the respectively obtaining the plurality of mineral contents of the plurality of rock samples includes: and for each rock sample, performing mineral content analysis on the slices of the rock sample to obtain a plurality of mineral contents of each rock sample.
Optionally, the obtaining a proportion of each mineral in the reservoir based on a content of each mineral in the plurality of rock samples comprises: for each mineral, taking an average of the mineral content of a plurality of rock samples, and taking the average as the proportion of the mineral in the reservoir. .
Optionally, the obtaining a proportion of each mineral in the reservoir based on a content of each mineral in the plurality of rock samples comprises: combining a plurality of minerals with the same skeleton into one mineral, and summing the proportions of the plurality of minerals with the same skeleton in the reservoir together, wherein the sum is used as the proportion of the one mineral in the reservoir.
Optionally, the mixed rock skeleton value of the reservoir is obtained by using the following formula:
wherein f is the mixed rock skeleton value of the reservoir, n is the type of the mineral, a is the mineral skeleton value corresponding to the mineral, and x is the proportion of the mineral in the reservoir.
The invention has the beneficial effects that: the method for obtaining the rock framework by utilizing the rock mineral components obtains the contents of various minerals of a plurality of rock samples, obtains the proportion of each mineral in a reservoir, obtains the mixed rock framework value of the reservoir by calculation according to the proportion of each mineral in the reservoir and the mineral framework value corresponding to the mineral, and accurately obtains the rock framework value of the complex reservoir, thereby achieving the purpose of accurately calculating the porosity of the reservoir.
The present invention has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a flow diagram of a method for finding a rock skeleton using rock mineral components according to an embodiment of the invention.
Fig. 2 shows a well logging graph of a pear tree in a deep layer.
FIG. 3 shows a validation graph of rock-blending-skeleton values obtained with reservoir porosity approaching zero.
Fig. 4 shows a verification diagram of the substitution of rock skeleton extracted from rock mineral composition into adjacent strata core analysis porosity according to one embodiment of the invention.
FIG. 5 shows a validation graph of core analysis porosity for adjacent layers using density skeleton calculations.
Fig. 6 shows a block diagram of an apparatus for finding a rock skeleton from rock mineral composition according to an embodiment of the invention.
102. A mineral content acquisition module; 104. a mineral reservoir proportion module; 106. and a calculation module.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein.
The invention provides a method for solving a rock framework by utilizing rock mineral components, which comprises the following steps: respectively obtaining various mineral contents of a plurality of rock samples; obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples; and calculating the mixed rock skeleton value of the reservoir based on the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
Specifically, a plurality of rock samples in the same stratum are analyzed for the content of the thin minerals, wells with drilling coring can obtain the content of the minerals through the thin analysis of the rock samples, when the wells do not have the drilling coring, the thin analysis of the thin minerals of the logging rock debris samples can be selected, the content of the multiple minerals of each rock sample is respectively obtained, the proportion of each mineral content in the reservoir is obtained, and the mixed rock skeleton value of the reservoir is calculated according to the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
The rock mixed skeleton value obtained by calculation can be verified by the rock mixed skeleton value obtained when the porosity of the reservoir tends to zero. The porosity calculated based on the mixed rock skeleton value obtained by the invention can be verified by the porosity of the reservoir obtained by core analysis, so that the risk of low potential calculation precision caused by the fact that the porosity is obtained by a single method under a complex condition can be avoided.
According to an exemplary implementation mode, the method for obtaining the rock framework by utilizing the rock mineral components obtains the content of various minerals of a plurality of rock samples, obtains the proportion of each mineral in a reservoir, calculates and obtains the mixed rock framework value of the reservoir according to the proportion of each mineral in the reservoir and the mineral framework value corresponding to the mineral, and accurately obtains the rock framework value of a complex reservoir, so as to achieve the purpose of accurately calculating the porosity of the reservoir.
Alternatively, separately obtaining the plurality of mineral contents of the plurality of rock samples comprises: and performing mineral content analysis on the thin slices of the rock samples aiming at each rock sample to obtain various mineral contents of each rock sample.
Alternatively, obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples comprises: for each mineral, an average of the mineral content of the plurality of rock samples is taken, and the average is taken as the mineral proportion in the reservoir.
Specifically, the method comprises the steps of counting the content of various minerals (the result of analyzing the content of the minerals in all rock cores or rock sample slices of the same stratum) of a plurality of rock samples in a well, taking the average value as the proportion of the minerals in a reservoir, taking the average value as the proportion of the minerals in the reservoir, and providing a basis for obtaining a rock framework by utilizing the content of the minerals.
Alternatively, obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples comprises: combining a plurality of minerals with the same skeleton into one mineral, and summing the proportions of the plurality of minerals with the same skeleton in the reservoir together to obtain the sum as the proportion of one mineral in the reservoir.
Specifically, after the proportion of each mineral in the reservoir is obtained, the same minerals are combined. Such as quartz mineral in sedimentary rock, flint in metamorphic rock, fine quartz rock, etc., which have the same skeleton, and flint and fine quartz rock in metamorphic rock are incorporated into the quartz mineral as one mineral, the proportion of such one mineral in the reservoir is the sum of the proportions of the incorporated minerals in the reservoir, for example, the proportion of the quartz mineral in the reservoir, the proportion of the quartz mineral in sedimentary rock in the reservoir + the proportion of the flint in metamorphic rock in the reservoir + the proportion of the fine quartz rock in the reservoir. The minerals that can be combined are combined, and the minerals that cannot be combined are used as independent minerals.
Alternatively, the mixed rock skeleton value of the reservoir is obtained by adopting the following formula:
wherein f is the mixed rock skeleton value of the reservoir, n is the type of the mineral, a is the mineral skeleton value corresponding to the mineral, and x is the proportion of the mineral in the reservoir.
Specifically, the mixed rock skeleton value of the reservoir is the sum of the products of the proportion of each mineral in the reservoir and the corresponding mineral skeleton value.
Alternatively, when the mineral is a volcanic mineral, determining a mineral skeleton value corresponding to the volcanic mineral by combining the regional characteristics of the rock skeleton.
Specifically, because the volcanic mother rock in each region has different causes and corresponding rock skeleton values are different, that is, the corresponding rock skeleton has regional characteristics, the rock type of the volcanic mother rock needs to be judged first, the mineral composition of the volcanic rock, that is, the rock type of the volcanic mother rock, and the mineral skeleton values are determined according to the corresponding mineral composition (that is, the rock type of the mother rock), and the mineral skeleton values of the volcanic rock in one region are the same. Therefore, the mineral skeleton values of the volcanic rocks in different areas are different, and the volcanic rock skeleton value is determined by combining the area characteristics of the volcanic rocks.
Alternatively, the mixed rock skeleton value is subjected to verification analysis.
Specifically, the porosity of the reservoir is obtained by calculating the mixed rock skeleton value obtained by calculation based on the method, and compared with the porosity of the reservoir obtained by core analysis, the porosity of the reservoir is obtained by calculating the mixed rock skeleton value obtained by calculation based on the method, and is completely consistent with the porosity of the reservoir obtained by core analysis. The rock mixed skeleton value obtained by calculation is compared with the rock mixed skeleton value obtained when the porosity of the reservoir tends to zero, and the rock mixed skeleton value obtained by calculation is completely consistent with the rock mixed skeleton value obtained when the porosity of the reservoir tends to zero.
The present invention also provides an electronic device, comprising: a memory storing executable instructions; and the processor runs the executable instructions in the memory to realize the method for solving the rock skeleton by utilizing the rock mineral composition.
The invention also provides a computer-readable storage medium, in which a computer program is stored, which computer program, when being executed by a processor, is adapted to carry out the method of finding a rock skeleton from rock mineral composition as described above.
The invention also provides a device for solving the rock skeleton by utilizing rock mineral components, which comprises: the mineral content acquisition module is used for respectively acquiring various mineral contents of a plurality of rock samples; the mineral reservoir proportion obtaining module is used for obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples; and the calculation module is used for calculating the mixed rock skeleton value of the reservoir based on the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
Specifically, a plurality of rock samples in the same stratum are analyzed for the content of the thin minerals, wells with drilling coring can obtain the content of the minerals through the thin analysis of the rock samples, when the wells do not have the drilling coring, the thin analysis of the thin minerals of the logging rock debris samples can be selected, the content of the multiple minerals of each rock sample is respectively obtained, the proportion of each mineral content in the reservoir is obtained, and the mixed rock skeleton value of the reservoir is calculated according to the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
The rock mixed skeleton value obtained by calculation can be verified by the rock mixed skeleton value obtained when the porosity of the reservoir tends to zero. The porosity calculated based on the mixed rock skeleton value obtained by the invention can be verified by the porosity of the reservoir obtained by core analysis, so that the risk of low potential calculation precision caused by the fact that the porosity is obtained by a single method under a complex condition can be avoided.
According to an exemplary implementation mode, the device for obtaining the rock framework by utilizing the rock mineral components obtains the content of various minerals of a plurality of rock samples, obtains the proportion of each mineral in a reservoir, calculates and obtains the mixed rock framework value of the reservoir according to the proportion of each mineral in the reservoir and the mineral framework value corresponding to the mineral, and accurately obtains the rock framework value of a complex reservoir, so that the aim of accurately calculating the porosity of the reservoir is fulfilled.
Alternatively, separately obtaining the plurality of mineral contents of the plurality of rock samples comprises: and performing mineral content analysis on the thin slices of the rock samples aiming at each rock sample to obtain various mineral contents of each rock sample.
Alternatively, obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples comprises: for each mineral, an average of the mineral content of the plurality of rock samples is taken, and the average is taken as the mineral proportion in the reservoir.
Specifically, the method comprises the steps of counting the content of various minerals of a plurality of rock samples in a well, taking the average value as the proportion of the minerals in a reservoir, taking the average value as the proportion of the minerals in the reservoir, and providing a basis for obtaining a rock framework by utilizing the content of the minerals.
Alternatively, obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples comprises: combining a plurality of minerals with the same skeleton into one mineral, and summing the proportions of the plurality of minerals with the same skeleton in the reservoir together to obtain the sum as the proportion of one mineral in the reservoir.
Specifically, after the proportion of each mineral in the reservoir is obtained, the same minerals are combined. Such as quartz mineral in sedimentary rock, flint in metamorphic rock, fine quartz rock, etc., which have the same skeleton, and flint and fine quartz rock in metamorphic rock are incorporated into the quartz mineral as one mineral, the proportion of such one mineral in the reservoir is the sum of the proportions of the incorporated minerals in the reservoir, for example, the proportion of the quartz mineral in the reservoir, the proportion of the quartz mineral in sedimentary rock in the reservoir + the proportion of the flint in metamorphic rock in the reservoir + the proportion of the fine quartz rock in the reservoir. The minerals that can be combined are combined, and the minerals that cannot be combined are used as independent minerals.
Alternatively, the mixed rock skeleton value of the reservoir is obtained by adopting the following formula:
wherein f is the mixed rock skeleton value of the reservoir, n is the type of the mineral, a is the mineral skeleton value corresponding to the mineral, and x is the proportion of the mineral in the reservoir.
Specifically, the mixed rock skeleton value of the reservoir is the sum of the products of the proportion of each mineral in the reservoir and the corresponding mineral skeleton value.
Example one
Fig. 1 shows a flow diagram of a method for finding a rock skeleton using rock mineral components according to an embodiment of the invention. Fig. 2 shows a well logging graph of a pear tree in a deep layer. FIG. 3 shows a validation graph of rock-blending-skeleton values obtained with reservoir porosity approaching zero. Fig. 4 shows a verification diagram of the substitution of rock skeleton extracted from rock mineral composition into adjacent strata core analysis porosity according to one embodiment of the invention. FIG. 5 shows a validation graph of core analysis porosity for adjacent layers using density skeleton calculations.
As shown in figure 1, the method for solving the rock skeleton by using rock mineral components comprises the following steps:
step 1: respectively obtaining various mineral contents of a plurality of rock samples;
wherein obtaining the plurality of mineral contents of the plurality of rock samples, respectively, comprises: and performing mineral content analysis on the thin slices of the rock samples aiming at each rock sample to obtain various mineral contents of each rock sample.
Step 2: obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples;
wherein obtaining a proportion of each mineral in the reservoir based on a content of each mineral in the plurality of rock samples comprises: for each mineral, an average of the mineral content of the plurality of rock samples is taken, and the average is taken as the mineral proportion in the reservoir. .
Wherein obtaining a proportion of each mineral in the reservoir based on a content of each mineral in the plurality of rock samples comprises: combining a plurality of minerals with the same skeleton into one mineral, and summing the proportions of the plurality of minerals with the same skeleton in the reservoir together to obtain the sum as the proportion of one mineral in the reservoir.
And step 3: and calculating the mixed rock skeleton value of the reservoir based on the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
The method comprises the following steps of obtaining a mixed rock skeleton value of a reservoir by adopting the following formula:
wherein f is the mixed rock skeleton value of the reservoir, n is the type of the mineral, a is the mineral skeleton value corresponding to the mineral, and x is the proportion of the mineral in the reservoir.
Taking a certain well in the deep layer of a pear tree as an example, the well logging curve graph is shown in fig. 2, sandstone reservoir sound waves and neutrons reflect that the reservoir porosity is low, the reservoir porosity reflected by the density is high, a reservoir porosity calculation curve is difficult to select according to three porosity curves, and the high and low of the reservoir porosity are related to whether the risk well can obtain breakthrough. The well is a key risk well for pear tree concave arrangement, and the porosity calculation faces multiple problems due to the fact that a target layer has high temperature and high pressure. Firstly, in order to ensure safe drilling and completion, the target layer of the well is finally determined not to be cored, so that the hidden danger is buried for the porosity evaluation of the target layer of the well due to the lack of accurate verification of the core analysis porosity of a plurality of well logging evaluation professional organizations; secondly, in order to protect the well wall and avoid blowout or kick, a large amount of superfine calcium carbonate and barite are added into the target layer of the well, and whether the drilling materials influence three porosity and resistivity curves or not is difficult to prove; thirdly, logging responses of three porosity curves (sound wave, density and neutron) of a target layer are inconsistent, and the porosity is calculated by selecting a person without basis; and fourthly, the target layer is predicted to be a reservoir with higher porosity according to the seismic data, and the calculation of the density curve seems to be matched with the reservoir, but if the porosity of the reservoir is evaluated by using sound waves or neutrons, the result is completely opposite to the seismic prediction result, and the selection of the porosity calculation curve lacks basis.
The rock skeleton obtained by using the rock mineral components is shown in the following table 1, in the table 1, reservoir layer ratios of quartz, feldspar and rock debris are obtained according to the thin-sheet mineral content analysis of a logging rock debris sample, and the mixed skeleton of sound waves and density is respectively calculated according to a calculation formula.
Table 1 is a table of the calculation results of the mineral content ratio and the mixed skeleton
Fig. 3 is a verification diagram of a rock mixed skeleton value obtained when the porosity of a reservoir tends to zero, and since the resistivity of a general sandstone reservoir is difficult to reach thousands of ohm meters, and experts suspect that the reservoir of the well is affected by drilling materials, which results in high resistivity and low acoustic wave time difference, the rock skeleton value obtained when the porosity tends to zero is questioned once and lacks of evidences. The method for obtaining the rock skeleton by using the rock mineral components has the advantages that the rock skeleton is not influenced by well drilling materials, is an objectively obtained rock skeleton value, and has reliability.
The value of the sound wave rock mixed skeleton obtained when the porosity of the reservoir tends to zero is 171.96 mu s/m, and is basically consistent with the rock skeleton 171.36 mu s/m obtained by using rock mineral components, which shows that the two can be mutually proved, and the drilling material is indirectly proved not to have influence on the logging curve.
The fourth continuous curve on the right side in fig. 4 is the porosity of the adjacent reservoir calculated by using the rock skeleton value obtained by the method, the rod-shaped curve enveloped by the curve is the porosity of core analysis, and the porosity and the rod-shaped curve are in good agreement, which indicates that the rock skeleton obtained by the method is consistent with the real rock skeleton of the stratum.
In fig. 5, the fourth continuous curve on the right side is the porosity of the adjacent reservoir calculated by using a density skeleton, the rod-shaped curve enveloped by the curve is the porosity of core analysis, the relationship between the porosity and the adjacent reservoir calculated by using the density skeleton is poor, it can be seen that the method for solving the rock skeleton by using rock mineral components can be verified by a plurality of methods, and the risk exists when the porosity of the reservoir is calculated by using a single method without verification.
Example two
Fig. 6 shows a block diagram of an apparatus for finding a rock skeleton using rock mineral composition according to an embodiment of the present invention.
As shown in fig. 6, the apparatus for finding a rock skeleton using rock mineral composition includes:
a mineral content obtaining module 102, which obtains a plurality of mineral contents of a plurality of rock samples respectively;
wherein obtaining the plurality of mineral contents of the plurality of rock samples, respectively, comprises: and performing mineral content analysis on the thin slices of the rock samples aiming at each rock sample to obtain various mineral contents of each rock sample.
A mineral reservoir proportion obtaining module 104 for obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples;
wherein obtaining a proportion of each mineral in the reservoir based on a content of each mineral in the plurality of rock samples comprises: for each mineral, an average of the mineral content of the plurality of rock samples is taken, and the average is taken as the mineral proportion in the reservoir. .
Wherein obtaining a proportion of each mineral in the reservoir based on a content of each mineral in the plurality of rock samples comprises: combining a plurality of minerals with the same skeleton into one mineral, and summing the proportions of the plurality of minerals with the same skeleton in the reservoir together to obtain the sum as the proportion of one mineral in the reservoir.
And the calculating module 106 is used for calculating the mixed rock skeleton value of the reservoir based on the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
The method comprises the following steps of obtaining a mixed rock skeleton value of a reservoir by adopting the following formula:
wherein f is the mixed rock skeleton value of the reservoir, n is the type of the mineral, a is the mineral skeleton value corresponding to the mineral, and x is the proportion of the mineral in the reservoir.
EXAMPLE III
The present disclosure provides an electronic device including: a memory storing executable instructions; and the processor runs the executable instructions in the memory to realize the method for solving the rock skeleton by utilizing the rock mineral composition.
An electronic device according to an embodiment of the present disclosure includes a memory and a processor.
The memory is to store non-transitory computer readable instructions. In particular, the memory may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, Random Access Memory (RAM), cache memory (cache), and/or the like. The non-volatile memory may include, for example, Read Only Memory (ROM), hard disk, flash memory, etc.
The processor may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the electronic device to perform desired functions. In one embodiment of the disclosure, the processor is configured to execute the computer readable instructions stored in the memory.
Those skilled in the art should understand that, in order to solve the technical problem of how to obtain a good user experience, the present embodiment may also include well-known structures such as a communication bus, an interface, and the like, and these well-known structures should also be included in the protection scope of the present disclosure.
For the detailed description of the present embodiment, reference may be made to the corresponding descriptions in the foregoing embodiments, which are not repeated herein.
Example four
The present disclosure provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described method of finding a rock skeleton from rock mineral components.
A computer-readable storage medium according to an embodiment of the present disclosure has non-transitory computer-readable instructions stored thereon. The non-transitory computer readable instructions, when executed by a processor, perform all or a portion of the steps of the methods of the embodiments of the disclosure previously described.
The computer-readable storage media include, but are not limited to: optical storage media (e.g., CD-ROMs and DVDs), magneto-optical storage media (e.g., MOs), magnetic storage media (e.g., magnetic tapes or removable disks), media with built-in rewritable non-volatile memory (e.g., memory cards), and media with built-in ROMs (e.g., ROM cartridges).
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A method of using rock mineral composition to find a rock skeleton, comprising:
respectively obtaining various mineral contents of a plurality of rock samples;
obtaining a proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples;
and calculating a mixed rock skeleton value of the reservoir based on the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
2. The method of claim 1, wherein the obtaining the plurality of mineral contents of the plurality of rock samples comprises:
and for each rock sample, performing mineral content analysis on the slices of the rock sample to obtain a plurality of mineral contents of each rock sample.
3. The method of claim 2, wherein the obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples comprises:
for each mineral, taking an average of the mineral content of a plurality of rock samples, and taking the average as the proportion of the mineral in the reservoir.
4. The method of claim 2, wherein the obtaining the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples comprises:
combining a plurality of minerals with the same skeleton into one mineral, and summing the proportions of the plurality of minerals with the same skeleton in the reservoir together, wherein the sum is used as the proportion of the one mineral in the reservoir.
5. The method of claim 4, wherein the mixed rock skeleton value of the reservoir is obtained by using the following formula:
wherein f is the mixed rock skeleton value of the reservoir, n is the type of the mineral, a is the mineral skeleton value corresponding to the mineral, and x is the proportion of the mineral in the reservoir.
6. An electronic device, characterized in that the electronic device comprises:
a memory storing executable instructions;
a processor executing the executable instructions in the memory to implement the method of using rock mineral composition to find a rock skeleton according to any one of claims 1 to 5.
7. A computer-readable storage medium, characterized in that it stores a computer program which, when being executed by a processor, carries out a method for rock skeleton extraction from rock mineral composition according to any one of claims 1-5.
8. An apparatus for determining a rock skeleton from rock mineral constituents, comprising:
the mineral content acquisition module is used for respectively acquiring various mineral contents of a plurality of rock samples;
the mineral reservoir proportion acquisition module is used for acquiring the proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples;
and the calculation module is used for calculating the mixed rock skeleton value of the reservoir based on the proportion of each mineral in the reservoir and the mineral skeleton value corresponding to the mineral.
9. The apparatus for exploring rock skeletons from rock mineral composition as defined in claim 8, wherein said separately acquiring a plurality of mineral contents of a plurality of rock samples comprises:
for each rock sample, performing mineral content analysis on the slices of the rock sample to obtain a plurality of mineral contents of each rock sample;
the obtaining a proportion of each mineral in the reservoir based on the content of each mineral in the plurality of rock samples comprises:
for each mineral, taking an average of the mineral content of a plurality of rock samples, and taking the average as the proportion of the mineral in the reservoir.
10. The apparatus for exploring rock framework from rock mineral composition as claimed in claim 9, wherein the mixed rock framework value of said reservoir is obtained by using the following formula:
wherein f is the mixed rock skeleton value of the reservoir, n is the type of the mineral, a is the mineral skeleton value corresponding to the mineral, and x is the proportion of the mineral in the reservoir.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617345A (en) * | 2013-11-11 | 2014-03-05 | 中国石油集团川庆钻探工程有限公司 | Method of calculating mineral components of rock in formations through element contents |
| RU2615051C1 (en) * | 2015-10-30 | 2017-04-03 | Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий - Газпром ВНИИГАЗ" | Method of determination of rock fracture porosity |
| CN109709608A (en) * | 2018-12-07 | 2019-05-03 | 中国石油天然气股份有限公司 | The mixed product hydrocarbon source rock TOC content of one kind and lithology compound mensuration method and application |
| CN110554441A (en) * | 2019-08-16 | 2019-12-10 | 中国石油天然气集团有限公司 | compact sandstone gas saturation calculation method based on calcareous content correction |
-
2020
- 2020-05-27 CN CN202010462046.0A patent/CN113742633A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617345A (en) * | 2013-11-11 | 2014-03-05 | 中国石油集团川庆钻探工程有限公司 | Method of calculating mineral components of rock in formations through element contents |
| RU2615051C1 (en) * | 2015-10-30 | 2017-04-03 | Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий - Газпром ВНИИГАЗ" | Method of determination of rock fracture porosity |
| CN109709608A (en) * | 2018-12-07 | 2019-05-03 | 中国石油天然气股份有限公司 | The mixed product hydrocarbon source rock TOC content of one kind and lithology compound mensuration method and application |
| CN110554441A (en) * | 2019-08-16 | 2019-12-10 | 中国石油天然气集团有限公司 | compact sandstone gas saturation calculation method based on calcareous content correction |
Non-Patent Citations (2)
| Title |
|---|
| 李淑荣等: "四川盆地二叠统海相碳酸盐岩储层测井评价", 《测井技术》, vol. 42, no. 1, pages 36 - 53 * |
| 蔡德洋等: "利用元素俘获测井评价致密砂岩岩性及有效性", 《工程地球物理学报》, vol. 9, no. 4, pages 440 - 444 * |
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