Petroleum resource quantity economic measurement and calculation method for mature exploration area

Abstract

The invention discloses a petroleum resource quantity economic measurement and calculation method for a mature exploration area, and the method comprises the following steps: S1, carrying out the mathematical distribution feature depiction of an influence factor, and S2, employing a Monte Carlo random simulation method; s3, operating the process for more than 50000 times by using a computer to obtain a frequency distribution curve of the minimum economic reserve scale of a certain mature exploration area; according to a large number theorem in the probability theory, when the number of test repetitions representing random events is large enough, enabling the frequency of event occurrence to converge to the probability of the events; and S4, calculating and obtaining an economic resource quantity probability distribution curve in the evaluation area by taking the minimum economic reserve probability distribution curve of the oil field as an economic truncation value according to the oilreservoir scale distribution sequence in the evaluation area. Compared with the prior art, the method has the advantages that possible minimum oil field economic reserves are provided for decision makers in a probability distribution mode, scientificity and reliability of results are guaranteed, and the method has practical guiding significance in exploration and development of mature exploratoryareas.

Description

technical field [0001] The invention relates to the technical field of exploration and development of petroleum resources, in particular to an economic calculation method of petroleum resources in mature exploration areas. Background technique [0002] The total amount of petroleum resources in a region can be determined by the mathematical scale sequence and geochemical methods of the discovered petroleum geological reserves. However, there is no effective method for the economic evaluation of the total amount of regional oil resources. [0003] Under the premise of a certain exploration investment, the minimum economic reserve index of an oilfield is the critical point of whether the geological target can obtain the economic benefits of exploration and development. Only when the reserves are greater than the minimum economic reserves of an oilfield, it is economically feasible to put the reserves into development. At present, the static method is usually used to calculate...

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Problems solved by technology

Due to the use of deterministic parameters, this method ignores the parameter differences of different reserves in the exploration area, and cannot consider the time value of money and opportunity cost. The result of the calculated minimum economic reserves is usually too small. Therefore, the calculation of oil resources in mature exploration areas The economic calculation results are often too large, and the deterministic parameter selection process is likely to cause unreasonable values, which increases the economic risk of commercial development of petroleum geological reserves discovered in exploration, and is not conducive to the economic development of petroleum geological reserves discovered in exploration

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