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Preliminary prospecting well optimum decision-making method and system

A decision-making method and a decision-making system technology, applied in the field of risk exploration well exploration decision-making methods and systems, can solve the problems that cannot fully reflect the actual situation of pre-exploration wells, complex evaluation indicators, etc., achieve a good theoretical foundation, wide adaptability, and improve deployment quality Effect

Inactive Publication Date: 2019-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a method and system for optimal decision-making of pre-exploration wells to overcome the problems that the evaluation indicators of existing methods are too complicated and cannot fully reflect the actual situation of pre-exploration wells

Method used

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  • Preliminary prospecting well optimum decision-making method and system
  • Preliminary prospecting well optimum decision-making method and system

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Embodiment

[0083] Taking Sinopec's 2014 prospecting well optimization decision as an example, the method of prospecting well optimization decision-making according to the embodiment of the present invention is described in detail. This time, 27 prospecting wells were reported, mainly including the Tarim deep layer, the lower marine combination, the piedmont zone, and the "three new" in the east.

[0084] Step 1: Calculate the success probability of the prospecting well.

[0085] For each pre-exploration well, calculate its oil and gas probability according to its trap probability, filling probability, reservoir probability and preservation probability, determine the engineering and technical success coefficient according to the engineering technical conditions, and then calculate according to the oil and gas probability and engineering and technical success coefficient The success probability of each prospecting well is shown in Table 7.

[0086] Table 7 Assignment table of success prob...

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Abstract

The invention discloses a preliminary prospecting well optimum decision-making method and system. The preliminary prospecting well optimum decision-making method comprises the steps: calculating the success probability of a preliminary prospecting well; calculating the value of the preliminary prospecting well; and establishing a decision coordinate system, and judging whether the preliminary prospecting well is an optimal preliminary prospecting well or not according to the positions of the data points of the preliminary prospecting well success probability and the preliminary prospecting well value in the decision coordinate system. According to the preliminary prospecting well optimum decision-making method, on the basis of considering the success probability and the value of the preliminary prospecting well, the two-dimensional optimization model is utilized to carry out preliminary prospecting well optimization decision, and a reliable and rapid decision basis can be provided forthe preliminary prospecting well, so that the deployment quality of the preliminary prospecting well is improved, and the exploration investment is inclined to a region with good benefits.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a risk exploration well exploration decision-making method and system. Background technique [0002] Exploration wells are exploratory wells deployed for the purpose of finding out the oil and gas bearing properties of favorable tertiary traps. Pre-exploration well optimization decision-making is an essential research work in oil and gas exploration. Its task is to conduct target analysis, optimization and queuing according to the trap exploration results on the basis of favorable zone evaluation, so as to accurately select the direction of exploration investment. , to provide a basis for the next step of exploration decision-making. [0003] At present, there are many methods for optimal decision-making of prospecting wells at home and abroad, such as geological risk evaluation methods, economic value evaluation methods, and expert decision-making. Among them, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02
CPCG06Q10/04G06Q10/0637G06Q50/02
Inventor 杨双程喆闫相宾
Owner CHINA PETROLEUM & CHEM CORP
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