Shale oil development well pattern deployment method

Abstract

The invention provides a shale oil development well pattern deployment method. The shale oil development well pattern deployment method comprises the steps that a plurality of shale oil dessert boxesare determined; pilot development boxes are determined from the shale oil dessert boxes, wherein the distance between every two adjacent pilot development boxes is not larger than the predicted crackheight; according to the predicted crack distribution track and the pre-calculated maximum principal stress direction of horizontal wells, the track deployment orientation of the horizontal wells in the corresponding pilot development boxes is determined; the horizontal section length of the horizontal wells is determined according to the plane distribution range of dessert bodies in the pilot development boxes; the well spacing between every two adjacent horizontal wells is determined according to the predicted crack length; and the well pattern deployment scale is determined according to thepredicted corresponding relation between the well mouth of each horizontal well and the target spot of the horizontal well and the spatial position relation of the horizontal wells of different layerseries. According to the technical scheme, the three-dimensional space configuration of the horizontal wells can be optimized, and therefore the single well yield and the crack control reserve are increased in the continental shale oil development process.

Description

technical field [0001] The invention relates to the technical field of exploration and development of oil and gas reservoirs, in particular to a method for deploying well patterns for shale oil development. Background technique [0002] As one of the unconventional oil and gas resources, shale oil is widely distributed and has great development potential. At present, my country's shale oil is mainly continental, and its exploration and development are in the stage of exploration and preparation. Compared with North American marine shale oil, it has complex structures, strong reservoir heterogeneity, small distribution area, and large buried depth. , non-obvious abnormal pressure, heavy oil quality, low gas-oil ratio, etc., so it is impossible to copy North American marine shale oil exploration and development technology and experience. At present, the important means of shale oil development are horizontal wells plus large-scale fracturing. Unlike flowing oil, which can be d...

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Problems solved by technology

At present, my country's shale oil is mainly continental, and its exploration and development are in the stage of exploration and preparation. Compared with North American marine shale oil, it has complex structures, strong reservoir heterogeneity, small distribution area, and large buried depth. , abnormal pressure is not obvious, heavy oil quality, low gas-oil ratio, etc., so it is impossible to copy North American marine shale oil exploration and development technology and experience

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