Oil shale continuous exploration drilling position optimization method

Abstract

The invention discloses an oil shale continuous exploration drilling position optimization method, and particularly relates to the field of oil shale industry. The method comprises: comprehensively considering shale oil occurrence stratum thickness, overlying stratum thickness, floor stratum thickness, moisture, ash content, fault, rock breaking degree and gap indexes, factors such as longitudinalwave impedance, transverse wave impedance, Poisson's ratio and shear modulus of the oil shale or mudstone; establishing an implicit function dependency relationship between the influence factors andthe shale oil reserves; selecting an optimal parameter interpolation method suitable for the exploration range to interpolate the undrilled position of an exploration area, randomly initializing a plurality of virtual exploration holes, and performing optimal iteration on the randomly initialized virtual exploration holes for a plurality of rounds to obtain the position of the next exploration drilling to be actually performed. The method solves the problem that the traditional method cannot optimize the position of the next exploration hole according to the characteristics of the actual exploration area, and provides a new method for optimizing the continuous exploration drilling position of the oil shale.

Description

technical field [0001] The invention relates to the field of oil shale industry, in particular to a method for optimizing drilling positions for oil shale continuous exploration. Background technique [0002] With the continuous development of the economy and the deepening of human understanding of resources, oil shale has generally been valued by various countries and regions in recent years. Oil shale is essentially an organic sedimentary rock. After a series of treatments, shale oil and shale gas similar to crude oil can be obtained. It is an important oil and gas resource for economic development. [0003] As an important part of unconventional oil and gas resource exploration, oil shale exploration has become a hot field of oil and gas exploration in my country and the world. Accurate and reliable oil shale continuous exploration drilling position selection method can not only provide important decision-making basis for decision-making departments, but also greatly sav...

AI Technical Summary

Problems solved by technology

When the calculation formula considers many factors, it is impossible to fit the functional dependence between shale oil reserves and influencing factors

In the case of less initial exploration data, the interpolation method is single, and it is impossible to select an appropriate interpolation method to enrich the data set according to the geological conditions of the actual exploration area

[0009] The extreme value optimization method is backward and does not conform to the geological data characteristics of the actual exploration area

[0010] Oil shale continuous exploration drilling position can only be interpolated on the exploration line, virtual exploration cannot be carried out at any position in the exploration area, and the accuracy of oil shale continuous exploration drilling position optimization cannot be guaranteed

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