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Oil, gas and mine right block quantitative evaluation method and system

A quantitative evaluation, oil and gas technology, applied in the field of petroleum geological exploration, can solve the problems of inconsistency, incompleteness, and unclear evaluation of oil and gas mineral rights blocks, and achieve the effect of improving objectivity and scientificity, and evaluating detailed evaluation.

Pending Publication Date: 2021-12-03
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a method and system for quantitative evaluation of oil and gas mineral rights blocks, at least solving the problem of incomplete, comprehensive and inconsistent evaluation of oil and gas mineral rights blocks in the prior art

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  • Oil, gas and mine right block quantitative evaluation method and system
  • Oil, gas and mine right block quantitative evaluation method and system
  • Oil, gas and mine right block quantitative evaluation method and system

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Experimental program
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Effect test

Embodiment 1

[0091] For a certain block, firstly, through geological research, the geological evaluation unit is divided, and then the geological evaluation model (P, Q value calculation index) is determined according to the oil and gas exploration type of each geological unit, and the evaluation standard is determined according to the region and field to which the unit belongs. The unit exploration degree (data degree and resource discovery degree) determines the degree of uncertainty in the evaluation index assignment, and uses the geological "dual-factor" evaluation model to calculate the probability (P) of oil and gas-bearing conditions of each geological unit, the strategic value of resources (Q) and the evaluation of each unit Result type, considering the area occupied by each geological unit, type of evaluation result, PQ value, uncertainty coefficient of evaluation result, comprehensively determine the geological classification and score of the block, combined with the plane position...

specific Embodiment approach

[0092] (1) Division of geological units: According to the actual situation of the data in the study area, the area adjacent to the block will be divided according to the first-level structure or second-level structure (if any) on the plane, and according to the similar structural sedimentary system or accumulation system ( If there is), the layering system divides the plane geological units, and after superimposing the blocks, take the geological units that intersect with the block plane projection as the units to be evaluated in this block, and a block can be divided into multiple spatially superimposed geological evaluation units Such as figure 2 shown.

[0093] (2) Establishment of geological unit evaluation model: According to the current oil and gas exploration situation, geological units are divided into four types: conventional oil and gas, shale oil, shale gas, and coalbed methane according to the types of oil and gas resources explored in each geological unit. Diffe...

Embodiment 2

[0125] Geological evaluation was carried out for 3 insufficient investment blocks in the southern exploration area. The total area of ​​the blocks is 11996Km2. These blocks are divided into 9 geological evaluation units, involving 5 conventional oil and gas geological units and 4 shale gas geological units. The total area 16744Km2, through the evaluation of 2 geological units of type I, with an area of ​​595Km2 and an uncertainty coefficient of 0.24, the evaluation results are close to the actual geological situation; 3 of type II1, with an area of ​​8978Km2 and an uncertainty coefficient of 0.56, the evaluation results are closer to the actual geological situation; II2 There are 2 Class III units with an area of ​​4664Km2 and an uncertainty coefficient of 0.2. The evaluation results are close to the actual geological conditions; there are 2 Class III units with an area of ​​2507Km2 and an uncertainty coefficient of 0.74. The evaluation results are generally close to the actual ...

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Abstract

The embodiment of the invention discloses an oil, gas and mine right block quantitative evaluation method and system. The oil, gas and mine right block quantitative evaluation method comprises the steps: dividing an oil, gas and mine right block into a plurality of geological evaluation units which are stacked in space; establishing a geological unit evaluation model; establishing a geological unit evaluation standard based on the geological unit evaluation model; determining the credibility of uncertain factors in the geological unit evaluation standard; evaluating the oil and gas condition probability and a resource strategic value; and comprehensively evaluating the oil, gas and mine right block based on the geological unit evaluation standard, the credibility of the uncertain factors in the geological unit evaluation standard, the oil-gas condition probability and the evaluation result of the resource strategic value. The purpose of detailed, comprehensive and unified evaluation of the oil, gas and mine right block is achieved. The objectivity and scientificity of evaluation of the evaluation block are improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum geological exploration, and more specifically relates to a quantitative evaluation method and system for oil and gas mineral right blocks. Background technique [0002] Oil and gas mineral right blocks (hereinafter referred to as blocks) are different from the concepts of basins, zones and other geological units. A local structure [Guo Qiulin, Mi Shiyun. Oil and gas exploration target evaluation and decision analysis [M]. Beijing: Petroleum Industry Press, 2004: 57-59.]. For multiple blocks registered and managed by oil companies, it is often necessary to evaluate their advantages and disadvantages to determine their advancement and retreat. Therefore, in order to conduct comprehensive comparison and evaluation of blocks, a complete evaluation system is established to "quickly, quantitatively and systematically" evaluate multiple blocks. A unified evaluation of block targets has become an urgen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02G06K9/62
CPCG06Q10/06393G06Q50/02G06F18/22G06F18/24
Inventor 王保华陆建林方成名徐旭辉宋在超程建赵琳洁
Owner CHINA PETROLEUM & CHEM CORP
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