Shale gas well screening method and device
A technology for shale gas wells and screening methods, which is applied in earthwork drilling, wellbore/well components, instruments, etc., can solve the problems of inability to obtain shale gas wells, high cost of experimental analysis, etc., and achieve the effect of low cost
Pending Publication Date: 2021-07-20
PETROCHINA CO LTD
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[0003] In the process of obtaining porosity, on the one hand, the total porosity of shale gas wells is usually calculated based on the logging data of shale gas wells, but the organic porosity and inorganic porosity of shale gas wells cannot be obtained only by logging data , among them, organic porosity and inorganic porosity can be used to calculate the content of shale gas wells in free state and adsorbed state respectively, which is of guiding significance for shale gas well reservoir evaluation and drilling target selection. The total porosity, organic porosity and inorganic porosity can be analyzed by the method, but the cost of experimental analysis is high
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[0059] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0060] In this application, the terms "first" and "second" are used to distinguish the same or similar items with basically the same function and function. It should be understood that "first", "second" and "nth" There are no logical or timing dependencies, nor are there restrictions on quantity or order of execution.
[0061] In the present application, the term "at least one" means one or more, and the meaning of "multiple" means two or more, for example, a plurality of first positions means two or more first positions.
[0062] figure 1 It is a flow chart of a screening method for shale gas wells provided in the embodiment of this application. see figure 1 , this embodiment is applied to a terminal, and this embodiment incl...
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The invention discloses a shale gas well screening method and device, and belongs to the technical field of oil-gas exploration and development. The method comprises the steps: acquiring the rock uranium content of at least one shale gas well, and inputting the rock uranium content of at least one shale gas well into the first target model, wherein the first target model is used for representing the mapping relation between the rock uranium content and the organic porosity, so the rock uranium content of at least one shale gas well can be mapped to the organic porosity of the at least one shale gas well through the first target model; based on the organic porosity of the at least one shale gas well, screening a target gas well with the maximum organic porosity from the at least one shale gas well, so the porosity of the shale gas well can be obtained at low cost, and the target gas well obtained by screening based on the porosity has a production indication effect on gas well exploitation, so the gas well exploitation can be performed in a targeted manner.
Description
technical field [0001] The present application relates to the technical field of oil and gas exploration and development, in particular to a screening method and device for shale gas wells. Background technique [0002] In recent years, with the development of oil and gas exploration and development from conventional oil and gas reservoirs to unconventional oil and gas reservoirs, shale gas has gradually become an important development field. Shale gas is mainly located in thin interbeds of dark mudstone and light gray siltstone. Natural gas mainly occurs in adsorption and free states, including marine shale, continental shale, marine-terrestrial transitional shale, etc. In the exploration and development of shale gas wells, the porosity of shale gas wells is usually estimated first, then the resources of shale gas wells are estimated based on porosity, and finally which shale gas well has the highest production value is evaluated based on the resources. [0003] In the pro...
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IPC IPC(8): G06Q50/02E21B49/00
CPCG06Q50/02E21B49/00
Inventor 钟光海陈丽清石学文刘文平罗超吴伟冉乙钧
Owner PETROCHINA CO LTD