CN116146162A - Shale gas sleeve variable well fracturing section cluster optimization method and device - Google Patents
Shale gas sleeve variable well fracturing section cluster optimization method and device Download PDFInfo
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- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
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- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/11—Locating fluid leaks, intrusions or movements using tracers; using radioactivity
- E21B47/111—Locating fluid leaks, intrusions or movements using tracers; using radioactivity using radioactivity
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Abstract
The invention provides a shale gas sleeve well-changing fracturing section cluster optimization method and device, wherein the method comprises the following steps: performing sleeve deformation analysis on a target sleeve to obtain deformation section information of the target sleeve; obtaining the deformation degree of the target casing according to the deformation section information of the target casing and a shale gas well casing deformation grading standard table; obtaining an optimization suggestion of the target casing according to the deformation degree of the target casing, shale lithology corresponding to the target casing, gas production contribution of shale lithology corresponding to the target casing and a shale gas casing well-shifting fracturing section cluster optimization standard table; the shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance. The device is used for executing the method. The shale gas sleeve well-changing fracturing segment cluster optimization method and device provided by the embodiment of the invention have the advantages that the fracturing efficiency and the transformation effect of the shale gas sleeve well-changing are improved.
Description
Technical Field
The invention relates to the technical field of oil and gas field development, in particular to a shale gas sleeve well-changing fracturing section cluster optimization method and device.
Background
In shale gas exploration exploitation, horizontal wells may be subjected to multi-stage fracturing in order to increase shale gas well production, but the fracturing process may deform casing, resulting in shale gas well production loss or cessation of exploitation.
For the areas where the geological conditions of the shale gas reservoir are complex, the reservoir heterogeneity is strong, the microstructure and the microcracking development are carried out, the problem of casing deformation in the development process is serious, and the construction efficiency and the development effect of the shale gas well are severely restricted. When the casing is deformed, the fracturing section can be modified and the fracturing process can be changed. However, how to reasonably reform and fracture design for different casing deformation is an important topic to be solved in the field.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a shale gas sleeve well-changing fracturing segment cluster optimization method and device, which can at least partially solve the problems in the prior art.
In a first aspect, the invention provides a shale gas sleeve well-shifting fracturing segment cluster optimization method, which comprises the following steps:
performing sleeve deformation analysis on a target sleeve to obtain deformation section information of the target sleeve;
obtaining the deformation degree of the target casing according to the deformation section information of the target casing and a shale gas well casing deformation grading standard table; wherein the shale gas well casing deformation grading standard table is obtained in advance;
obtaining an optimization suggestion of the target casing according to the deformation degree of the target casing, shale lithology corresponding to the target casing, gas production contribution of shale lithology corresponding to the target casing and a shale gas casing well-shifting fracturing section cluster optimization standard table; the shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
In a second aspect, the invention provides a shale gas sleeve well-shifting fracturing segment cluster optimization device, comprising:
the first obtaining unit is used for performing sleeve deformation analysis on the target sleeve to obtain deformation section information of the target sleeve;
the second obtaining unit is used for obtaining the deformation degree of the target casing according to the deformation section information of the target casing and the shale gas well casing deformation grading standard table; wherein the shale gas well casing deformation grading standard table is obtained in advance;
the third obtaining unit is used for obtaining an optimization suggestion of the target casing according to the deformation degree of the target casing, shale lithology corresponding to the target casing, gas production contribution of shale lithology corresponding to the target casing and a shale gas casing well-changing fracturing segment cluster optimization standard table; the shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
In a third aspect, the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the shale gas sleeve well-shifting fracturing segment cluster optimization method according to any of the embodiments above when executing the program.
In a fourth aspect, the present invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the shale gas sleeve well-logging fracture cluster optimization method of any of the embodiments described above.
According to the shale gas casing string change well fracturing segment cluster optimization method and device, the casing string change analysis can be carried out on the target casing to obtain deformation segment information of the target casing, the deformation degree of the target casing is obtained according to the deformation segment information of the target casing and the shale gas well casing string change grading standard table, and the optimization suggestion of the target casing is obtained according to the deformation degree of the target casing, the shale lithology corresponding to the target casing, the gas yield contribution of the shale lithology corresponding to the target casing and the shale gas casing string change well fracturing segment cluster optimization standard table, so that the optimization suggestion can be provided quickly, and the fracturing efficiency and the transformation effect of the shale gas casing string change well are improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:
fig. 1 is a schematic flow chart of a shale gas sleeve variable well fracturing segment cluster optimization method provided by a first embodiment of the invention.
Fig. 2 is a schematic flow chart of a shale gas sleeve variable well fracturing segment cluster optimization method according to a second embodiment of the invention.
Fig. 3 is a schematic structural diagram of a shale gas sleeve variable well fracturing segment cluster optimizing device according to a third embodiment of the invention.
Fig. 4 is a schematic structural diagram of a shale gas sleeve variable well fracturing segment cluster optimization device according to a fourth embodiment of the invention.
Fig. 5 is a schematic structural diagram of a shale gas sleeve variable well fracturing segment cluster optimization device according to a fifth embodiment of the invention.
Fig. 6 is a schematic physical structure of an electronic device according to a sixth embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings. The exemplary embodiments of the present invention and their descriptions herein are for the purpose of explaining the present invention, but are not to be construed as limiting the invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
The execution main body of the shale gas sleeve variable well fracturing segment cluster optimization method provided by the embodiment of the invention comprises, but is not limited to, a computer.
In order to facilitate understanding of the technical solutions provided in the present application, the following description will first explain relevant content of the technical solutions of the present application.
Shale reservoir physical property changes greatly, longitudinal and plane heterogeneity is strong, microstructure and micro fracture develop, casing deformation caused by stratum shearing and sliding is frequent, and construction efficiency and transformation effect are seriously affected. Aiming at the problems that the shale gas reservoir is strong in heterogeneity, the fracturing sleeve becomes serious and the sleeve-changing well section is not fully transformed, the embodiment of the invention provides a shale gas well fracturing section cluster optimization method under the condition of sleeve-changing, shale stratum evaluation is carried out on a mineral layer based on element analysis, lithology is quantitatively identified and judged, and then the relation between gas production and lithology is accurately and quantitatively identified by comprehensively applying test gas and production profile test analysis data, so that advice is provided for shale reservoir fracturing section cluster optimization and process selection.
Fig. 1 is a schematic flow chart of a shale gas sleeve variable well fracturing segment cluster optimization method provided by a first embodiment of the invention, and as shown in fig. 1, the shale gas sleeve variable well fracturing segment cluster optimization method provided by the embodiment of the invention comprises the following steps:
s101, performing sleeve deformation analysis on a target sleeve to obtain deformation section information of the target sleeve;
specifically, sleeve deformation analysis is performed on a target sleeve through sleeve magnetic monitoring data and multi-arm borehole diameter logging data to obtain deformation section information of the target sleeve, wherein the deformation section information comprises information such as deformation range, deformation size, deformation characteristics and the like, and the deformation section information is set according to actual needs, and the embodiment of the invention is not limited. The specific process of the set-change analysis is the prior art, and will not be described here in detail.
S102, obtaining the deformation degree of the target casing according to the deformation section information of the target casing and a shale gas well casing deformation grading standard table; wherein the shale gas well casing deformation grading standard table is obtained in advance;
specifically, based on the deformation section information of the target casing, the deformation degree of the target casing can be inquired and obtained in a shale gas well casing deformation grading standard table. The deformation degree can be classified into class I, class II, class III and the like, and is set according to actual needs, and the embodiment of the invention is not limited. Wherein the shale gas well casing deformation classification standard table is obtained in advance.
For example, table 1 is a shale gas well casing deformation grading standard table, and as shown in table 1, deformation section information includes deformation range, deformation size and deformation characteristics, and according to the deformation range, the deformation size and the deformation characteristics, the corresponding deformation degree can be obtained by inquiring in table 1. In table 1, the deformation range is the deformation length of the target casing, and the deformation size is equal to the difference between the maximum diameter of the target casing minus the average diameter. The degree of deformation is classified into class I, class II and class III. Grade I is slightly deformed, grade II is more severely deformed, and grade III is severely deformed. The deformation range corresponding to the level I is that the deformation length is smaller than 20m, the deformation size is smaller than 10mm, and the deformation characteristic is extrusion deformation. The deformation range corresponding to the grade II is that the deformation length is more than or equal to 20m and less than 50m, the deformation size is more than or equal to 10mm and less than 30mm, and the deformation characteristic is shear deformation. The deformation range corresponding to the III level is that the deformation length is more than or equal to 50m, the deformation size is more than or equal to 30mm, and the deformation characteristics are shearing and extrusion deformation. The extrusion deformation refers to that positive and negative peak values of a sleeve-changing magnetic abnormal logging curve are less than 1500mV, and the multi-arm borehole diameter logging interpretation result only includes radial diameter shrinkage of the sleeve; the shear deformation refers to that the positive peak value and the negative peak value of the sleeve variable magnetic abnormal curve are more than 1500mV, and the interpretation result of the multi-arm borehole diameter well logging is only the axial shear deformation of the sleeve; the shearing and extrusion deformation refers to that the positive peak and negative peak value of the sleeve-changing magnetic abnormal logging curve is more than 1500mV, and the multi-arm borehole diameter logging interpretation result includes radial shrinkage of the sleeve and transverse shearing deformation of the sleeve.
Table 1 shale gas well casing change grading standard table
Specifically, based on the deformation degree of the target casing, shale lithology corresponding to the target casing and the gas production contribution of shale lithology corresponding to the target casing, inquiring a shale gas casing well-shifting fracturing segment cluster optimization standard table, an optimization suggestion of the target casing can be obtained, and the optimization suggestion can comprise a fracturing segment cluster optimization suggestion and a fracturing process optimization suggestion. The associated personnel may perform fracturing modification on the target casing based on the optimization suggestions of the target casing. The shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
For example, table 2 is a table of shale gas sleeve variable well fracturing segment cluster optimization criteria, and shale lithology is classified into silicon-rich deep water canopy shale, siliceous deep water canopy shale, and calcareous shallow water canopy shale as shown in table 2. The gas production contribution is divided into high, higher and low. And according to the deformation degree, shale lithology and gas production contribution, corresponding fracturing segment cluster optimization suggestions and fracturing process optimization suggestions can be inquired and obtained.
Table 2 shale gas sleeve variable well fracturing section cluster optimization standard table
According to the shale gas casing string change well fracturing segment cluster optimization method provided by the embodiment of the invention, the target casing string can be subjected to string change analysis to obtain the deformation segment information of the target casing string, the deformation degree of the target casing string is obtained according to the deformation segment information of the target casing string and the shale gas well casing string change grading standard table, and the optimization suggestion of the target casing string is obtained according to the deformation degree of the target casing string, the shale lithology corresponding to the target casing string, the gas production contribution of the shale lithology corresponding to the target casing string and the shale gas casing string change well fracturing segment cluster optimization standard table, so that the optimization suggestion can be provided quickly, and the fracturing efficiency and the transformation effect of the shale gas casing string change well are improved.
Fig. 2 is a schematic flow chart of a shale gas casing well-changing fracturing segment cluster optimization method according to a second embodiment of the present invention, as shown in fig. 2, on the basis of the foregoing embodiments, further, the step of obtaining in advance shale lithology corresponding to the target casing includes:
s201, acquiring the mineral component content, the thorium-uranium ratio and the total organic carbon value of shale corresponding to the target casing;
specifically, through the while-drilling data, the element logging data and the core analysis data, the mineral component content, the thorium-uranium ratio (Th/U) and the total organic carbon (Total Organic Carbon, abbreviated as TOC) values of the shale corresponding to the target casing can be obtained. The mineral component content may include siliceous content, calcareous content and clay content, which are set according to actual needs, and the embodiment of the invention is not limited.
S202, according to the mineral component content, thorium-uranium ratio, total organic carbon value and logging response model of shale corresponding to the target casing, shale lithology corresponding to the target casing is obtained; wherein the logging response model is pre-established.
Specifically, the mineral component content, the thorium-uranium ratio and the total organic carbon value of shale corresponding to the target casing are input into a logging response model, and shale lithology corresponding to the target casing can be output. Wherein the logging response model is pre-established.
The logging response model may be established by the following process.
By utilizing the characteristics of mineral components of sample shale with different lithology on logging response, the logging response relation of the content of the sample shale-mineral components is constructed, the lithology of the sample shale is determined by the while-drilling, element logging and core analysis data of the sample shale, the lithology of the sample shale can be divided into silicon-rich deep water canopy shale, siliceous deep water canopy shale (siliceous shale for short) and calcareous shallow water canopy shale, and the logging response sensitive to the lithology response of the sample shale is analyzed to obtain the thorium-uranium ratio and the total organic carbon value of the sample shale. For example, shale with a thorium/uranium ratio of 2 or less, a TOC value of 3 or more, a siliceous content of greater than 50%, a calcareous content of less than 10% and a clay content of less than 20% is siliceous shale. And (3) correspondingly obtaining a logging response model by the different lithology of shale, the mineral component content, the thorium-uranium ratio and the total organic carbon value.
On the basis of the above embodiments, further, obtaining in advance the gas production contribution of shale lithology corresponding to the target casing includes:
shale lithology corresponding to the target casing and a corresponding relation between shale lithology and gas production contribution are obtained, and the gas production contribution of the shale lithology corresponding to the target casing is obtained; wherein, shale lithology and gas production contribution corresponding relation is pre-established.
Specifically, the shale lithology corresponding to the target casing is inquired about the corresponding relation between the shale lithology and the gas production contribution, and the gas production contribution of the shale lithology corresponding to the target casing can be obtained. Wherein, shale lithology and gas production contribution corresponding relation is pre-established.
The relation between the gas production and shale lithology can be determined by using the gas test evaluation and the gas production and profile test data, so that the gas production contribution of different shale lithology can be determined. According to the test gas evaluation and the production profile test data, under the same conditions, the gas yield of the silicon-rich deep water land canopy shale is highest, the gas yield of the calcium shallow water land canopy shale is lowest, and the gas yield of the siliceous deep water land canopy shale is higher than that of the calcium shallow water land canopy shale and lower than that of the silicon-rich deep water land canopy shale, so that the corresponding relation between shale lithology and gas yield contribution can be established as follows: the gas yield contribution of the silicon-rich deep water terrestrial canopy shale is high, the gas yield contribution of the siliceous deep water terrestrial canopy shale is high, and the gas yield contribution of the calcareous shallow water terrestrial canopy shale is low.
Further, on the basis of the above embodiments, the deformation section information of the target casing includes a deformation range, a deformation size and a deformation feature; accordingly, the shale gas well casing deformation classification standard table includes deformation degrees corresponding to deformation ranges, deformation sizes and deformation characteristics.
Specifically, the deformation section information of the target casing includes a deformation range, a deformation size and a deformation characteristic, the deformation degree corresponding to the deformation range, the deformation size and the deformation characteristic can be inquired and obtained in the shale gas well casing deformation grading standard table through the deformation range, the deformation size and the deformation characteristic, and under the condition that the deformation range, the deformation size and the deformation characteristic are determined, the unique corresponding deformation degree can be obtained in the shale gas well casing deformation grading standard table.
By the shale gas well fracturing segment cluster optimization method provided by the embodiment of the invention, fracturing design is carried out on 20 wells of the Wifar shale gas, the fracturing construction efficiency is improved by 21%, the segment loss rate is reduced by 1.4%, and the single well yield is improved by 11%.
Fig. 3 is a schematic structural diagram of a shale gas sleeve variable well fracturing segment cluster optimization device provided by a third embodiment of the present invention, and as shown in fig. 3, the shale gas sleeve variable well fracturing segment cluster optimization device provided by the embodiment of the present invention includes a first obtaining unit 301, a second obtaining unit 302, and a third obtaining unit 303, where:
the first obtaining unit 301 is configured to perform sleeve deformation analysis on a target casing, and obtain deformed segment information of the target casing; the second obtaining unit 302 is configured to obtain a deformation degree of the target casing according to the deformation section information of the target casing and a shale gas well casing deformation classification standard table; wherein the shale gas well casing deformation grading standard table is obtained in advance; the third obtaining unit 303 is configured to obtain an optimization suggestion of the target casing according to the deformation degree of the target casing, shale lithology corresponding to the target casing, gas production contribution of shale lithology corresponding to the target casing, and a shale gas casing well-shifting fracturing segment cluster optimization standard table; the shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
Specifically, the first obtaining unit 301 performs sleeve deformation analysis on the target casing through casing magnetic monitoring data and multi-arm borehole logging data to obtain deformation section information of the target casing, where the deformation section information includes information such as a deformation range, a deformation size, deformation characteristics, and the like, and the deformation section information is set according to actual needs, and the embodiment of the invention is not limited. The specific process of the set-change analysis is the prior art, and will not be described here in detail.
The second obtaining unit 302 may query and obtain the deformation degree of the target casing based on the deformation section information of the target casing in a shale gas well casing deformation classification standard table. The deformation degree can be classified into class I, class II, class III and the like, and is set according to actual needs, and the embodiment of the invention is not limited. Wherein the shale gas well casing deformation classification standard table is obtained in advance.
The third obtaining unit 303 queries a shale gas casing variable well fracturing segment cluster optimization standard table based on the deformation degree of the target casing, shale lithology corresponding to the target casing and gas production contribution of shale lithology corresponding to the target casing, and may obtain an optimization suggestion of the target casing, where the optimization suggestion may include a fracturing segment cluster optimization suggestion and a fracturing process optimization suggestion. The associated personnel may perform fracturing modification on the target casing based on the optimization suggestions of the target casing. The shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
According to the shale gas casing string change well fracturing segment cluster optimization device provided by the embodiment of the invention, the target casing string can be subjected to string change analysis to obtain the deformation segment information of the target casing string, the deformation degree of the target casing string is obtained according to the deformation segment information of the target casing string and the shale gas well casing string change grading standard table, and the optimization suggestion of the target casing string is obtained according to the deformation degree of the target casing string, the shale lithology corresponding to the target casing string, the gas production contribution of the shale lithology corresponding to the target casing string and the shale gas casing string change well fracturing segment cluster optimization standard table, so that the optimization suggestion can be provided quickly, and the fracturing efficiency and the transformation effect of the shale gas casing string change well are improved.
Fig. 4 is a schematic structural diagram of a shale gas sleeve variable well fracturing segment cluster optimization device according to a fourth embodiment of the present invention, as shown in fig. 4, and further, based on the foregoing embodiments, the shale gas sleeve variable well fracturing segment cluster optimization device according to the embodiment of the present invention further includes an obtaining unit 304 and a fourth obtaining unit 305, where:
the obtaining unit 304 is configured to obtain a mineral component content, a thorium-uranium ratio and a total organic carbon value of shale corresponding to the target casing; the fourth obtaining unit 305 is configured to obtain shale lithology corresponding to the target casing according to the mineral component content, the thorium-uranium ratio, the total organic carbon value and the logging response model of the shale corresponding to the target casing; wherein the logging response model is pre-established.
Fig. 5 is a schematic structural diagram of a shale gas sleeve variable well fracturing segment cluster optimization device according to a fifth embodiment of the present invention, as shown in fig. 5, and further, based on the foregoing embodiments, the shale gas sleeve variable well fracturing segment cluster optimization device according to the embodiment of the present invention further includes a fifth obtaining unit 306, where:
the fifth obtaining unit 306 is configured to obtain a gas production contribution of the shale lithology corresponding to the target casing according to the shale lithology corresponding to the target casing and a corresponding relationship between the shale lithology and the gas production contribution; wherein, shale lithology and gas production contribution corresponding relation is pre-established.
Further, on the basis of the above embodiments, the deformation section information of the target casing includes a deformation range, a deformation size and a deformation feature; accordingly, the shale gas well casing deformation classification standard table includes deformation degrees corresponding to deformation ranges, deformation sizes and deformation characteristics.
The embodiment of the apparatus provided in the embodiment of the present invention may be specifically used to execute the processing flow of each method embodiment, and the functions thereof are not described herein again, and may refer to the detailed description of the method embodiments.
Fig. 6 is a schematic physical structure of an electronic device according to a sixth embodiment of the present invention, as shown in fig. 6, the electronic device may include: processor 601, communication interface (Communications Interface) 602, memory 603 and communication bus 604, wherein processor 601, communication interface 602, memory 603 complete the communication between each other through communication bus 604. The processor 601 may call logic instructions in the memory 603 to perform the following method: performing sleeve deformation analysis on a target sleeve to obtain deformation section information of the target sleeve; obtaining the deformation degree of the target casing according to the deformation section information of the target casing and a shale gas well casing deformation grading standard table; wherein the shale gas well casing deformation grading standard table is obtained in advance; obtaining an optimization suggestion of the target casing according to the deformation degree of the target casing, shale lithology corresponding to the target casing, gas production contribution of shale lithology corresponding to the target casing and a shale gas casing well-shifting fracturing section cluster optimization standard table; the shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
Further, the logic instructions in the memory 603 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The present embodiment discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, are capable of performing the methods provided by the above-described method embodiments, for example comprising: performing sleeve deformation analysis on a target sleeve to obtain deformation section information of the target sleeve; obtaining the deformation degree of the target casing according to the deformation section information of the target casing and a shale gas well casing deformation grading standard table; wherein the shale gas well casing deformation grading standard table is obtained in advance; obtaining an optimization suggestion of the target casing according to the deformation degree of the target casing, shale lithology corresponding to the target casing, gas production contribution of shale lithology corresponding to the target casing and a shale gas casing well-shifting fracturing section cluster optimization standard table; the shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
The present embodiment provides a computer-readable storage medium storing a computer program that causes the computer to execute the methods provided by the above-described method embodiments, for example, including: performing sleeve deformation analysis on a target sleeve to obtain deformation section information of the target sleeve; obtaining the deformation degree of the target casing according to the deformation section information of the target casing and a shale gas well casing deformation grading standard table; wherein the shale gas well casing deformation grading standard table is obtained in advance; obtaining an optimization suggestion of the target casing according to the deformation degree of the target casing, shale lithology corresponding to the target casing, gas production contribution of shale lithology corresponding to the target casing and a shale gas casing well-shifting fracturing section cluster optimization standard table; the shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In the description of the present specification, reference to the terms "one embodiment," "one particular embodiment," "some embodiments," "for example," "an example," "a particular example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The shale gas sleeve well-changing fracturing segment cluster optimization method is characterized by comprising the following steps of:
performing sleeve deformation analysis on a target sleeve to obtain deformation section information of the target sleeve;
obtaining the deformation degree of the target casing according to the deformation section information of the target casing and a shale gas well casing deformation grading standard table; wherein the shale gas well casing deformation grading standard table is obtained in advance;
obtaining an optimization suggestion of the target casing according to the deformation degree of the target casing, shale lithology corresponding to the target casing, gas production contribution of shale lithology corresponding to the target casing and a shale gas casing well-shifting fracturing section cluster optimization standard table; the shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
2. The method of claim 1, wherein the step of pre-obtaining shale lithology corresponding to the target casing comprises:
acquiring the mineral component content, the thorium-uranium ratio and the total organic carbon value of shale corresponding to the target casing;
according to the mineral component content, thorium-uranium ratio, total organic carbon value and logging response model of shale corresponding to the target casing, shale lithology corresponding to the target casing is obtained; wherein the logging response model is pre-established.
3. The method of claim 1, wherein pre-obtaining a gas production contribution of shale lithology corresponding to the target casing comprises:
according to shale lithology corresponding to the target casing and the corresponding relation between shale lithology and gas production contribution, obtaining the gas production contribution of shale lithology corresponding to the target casing; wherein, shale lithology and gas production contribution corresponding relation is pre-established.
4. A method according to any one of claims 1 to 3, wherein the deformation section information of the target casing includes deformation range, deformation size and deformation characteristics; accordingly, the shale gas well casing deformation classification standard table includes deformation degrees corresponding to deformation ranges, deformation sizes and deformation characteristics.
5. Shale gas sleeve becomes well fracturing section cluster optimizing apparatus, its characterized in that includes:
the first obtaining unit is used for performing sleeve deformation analysis on the target sleeve to obtain deformation section information of the target sleeve;
the second obtaining unit is used for obtaining the deformation degree of the target casing according to the deformation section information of the target casing and the shale gas well casing deformation grading standard table; wherein the shale gas well casing deformation grading standard table is obtained in advance;
the third obtaining unit is used for obtaining an optimization suggestion of the target casing according to the deformation degree of the target casing, shale lithology corresponding to the target casing, gas production contribution of shale lithology corresponding to the target casing and a shale gas casing well-changing fracturing segment cluster optimization standard table; the shale lithology corresponding to the target casing, the gas production contribution of the shale lithology corresponding to the target casing and the shale gas casing well-shifting fracturing segment cluster optimization standard table are obtained in advance.
6. The apparatus as recited in claim 5, further comprising:
the acquisition unit is used for acquiring the mineral component content, the thorium-uranium ratio and the total organic carbon value of the shale corresponding to the target casing;
the fourth obtaining unit is used for obtaining shale lithology corresponding to the target casing according to the mineral component content, the thorium-uranium ratio, the total organic carbon value and the logging response model of the shale corresponding to the target casing; wherein the logging response model is pre-established.
7. The apparatus as recited in claim 5, further comprising:
a fifth obtaining unit, configured to obtain a gas production contribution of the shale lithology corresponding to the target casing according to the shale lithology corresponding to the target casing and a corresponding relationship between the shale lithology and the gas production contribution; wherein, shale lithology and gas production contribution corresponding relation is pre-established.
8. The apparatus of any one of claims 5 to 7, wherein the deformation section information of the target casing includes a deformation range, a deformation size, and a deformation feature; accordingly, the shale gas well casing deformation classification standard table includes deformation degrees corresponding to deformation ranges, deformation sizes and deformation characteristics.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of claims 1 to 4 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 4.
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