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原油生产能力核减是原油生产能力核定的重要组成部分,直接决定产能核定工作的科学性、合理性。为了避免产建效果好于计划的时候老区多核减、产建效果差于计划的时候老区少核减两种情况发生,基于Arps递减规律模型建立了原油生产能力核减率、核减可靠程度合理性判断理论模型和方法,建立了核减可靠程度图版,可以直观判断不同油田或开发单元核减的合理性。认为原油生产能力核减率与综合递减率存在着内在的理论关系,核减率大于年综合递减率,与自然递减率没有直接的关系,当年综合递减率低于20%时,原油生产能力核减可靠程度为1.7~1.8。同时,以河南王集东区为例进行了原油生产能力核减计算,论证了该区块原油生产能力相关指标的合理性及原油生产能力核减率的合理性。
The reduction of crude oil production capacity is an important part of the verification of crude oil production capacity, which directly determines the scientific and rational verification of capacity. In order to avoid the construction effect is better than the plan when the old multi-core nuclear reduction, the construction effect is worse than the old plan when the nuclear less two cases occur, based on the Arps decreasing model established crude oil production capacity reduction rate, reduce the degree of reliability of judgment theory Models and methods, a nuclear reduction reliability chart has been established, which can directly judge the rationality of nuclear reduction in different oil fields or development units. It is considered that there is an inherent theoretical relationship between the nuclear reduction rate of crude oil production capacity and the comprehensive decline rate. The reduction rate of nuclear crude oil is greater than the comprehensive decline rate of the year, which is not directly related to the natural decline rate. When the comprehensive decline rate is less than 20% 1.7 ~ 1.8. At the same time, taking Wangji, Henan Province as an example, the calculation of reduction of crude oil production capacity was carried out. The rationality of related indicators of crude oil production capacity and the rationality of nuclear reduction of crude oil production capacity were demonstrated.