A rapid evaluation method for gas production of shale gas reservoirs

Abstract

The invention relates to a quick evaluation method for gas production of shale gas reservoirs, which obtains well logging and other geological data of shale gas reservoirs to be evaluated in the work area; determines the shale section of the well to be evaluated; Establish shale gas reservoir gas production evaluation parameter scoring standard based on well logging and other geological data. The shale gas production impact factor GPF and reservoir evaluation index LEI calculated based on the scoring standard are on the X and Y axes, and the GPF is plotted ‑LEI evaluation board, on the evaluation board, use different symbols to classify and mark the gas production of shale gas reservoirs; draw the determined gas production division standards of reservoirs in the work area on the evaluation board, and the shale intervals of wells to be evaluated The shale gas production impact factor GPF and the reservoir evaluation index LEI value are put on the evaluation chart, and the gas production category of the shale section of the well to be evaluated is judged from the area where the data point is located; the evaluation result is output. The method of the invention is simple and convenient, and it is applied in Fuling area, and the evaluation result is consistent with the actual situation.

Description

technical field [0001] The invention relates to the field of evaluation of shale gas reservoirs, in particular to a quick evaluation method for gas production of shale gas reservoirs. Background technique [0002] The development of shale gas horizontal wells is a world-class technical problem. With the success of the shale gas revolution in the United States and the commercial development of the Fuling shale gas field in China, the research on shale gas technology has attracted the attention of many scholars at home and abroad. [0003] The practice of Fuling shale gas exploration and development has proved that the gas production of shale gas reservoirs is the fundamental factor determining the productivity of shale gas wells. The greater the proportion of shale gas horizontal wells passing through high-quality shale intervals, the higher the productivity of shale gas horizontal wells. On the contrary, it is difficult for shale gas horizontal wells to obtain high product...

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Problems solved by technology

On the contrary, it is difficult for shale gas horizontal wells to obtain high production

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