Shale gas economic resource quantity prediction method and system

Abstract

The invention discloses a shale gas economic resource quantity prediction method. The method comprises the steps of acquiring the initial stability test daily output of a shale gas single well is acquired; determining shale gas single well cumulative yield; determining a shale gas single well cumulative sales income function and a shale gas single well cumulative investment cost function accordingto the shale gas single well cumulative yield; determining a single well ultimate economic life period and a single well cost recovery period according to the shale gas single well cumulative sales income function and the shale gas single well cumulative input cost function; determining the single well ultimate economic resource quantity according to the single well ultimate economic life period;obtaining the area of the shale gas resource effective area; determining the area of a shale gas resource prediction area; determining the number of effectively deployed drilling wells according to the well pattern density and the area of the rock gas resource prediction area; and the shale gas ultimate economic resource quantity of the prediction area is determined according to the number of effectively deployed drilling wells and the ultimate economic resource quantity of the single well. According to the method, the prediction precision of the shale gas extreme economic resource quantity in the prediction area can be improved.

Description

technical field [0001] The invention relates to the field of resource forecasting, in particular to a method and system for forecasting the amount of shale gas economic resources. Background technique [0002] The resources predicted in previous shale gas resource prediction methods are usually geological resources and technically recoverable resources. Only geological factors and engineering technical factors are considered, so the results obtained only represent how many resources are currently buried in the ground. Quantity (geological resources), how much can be exploited under the current engineering technology level (technically recoverable resources), without considering ecological environmental factors and economic factors, that is, the protection of the ecological environment, various costs of drilling and shale The impact of gas prices on resource volumes. However, with the gradual change of my country's energy structure and vigorous advocacy of ecological environ...

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Problems solved by technology

[0002] The resources predicted in previous shale gas resource prediction methods are usually geological resources and technically recoverable resources. Only geological factors and engineering technical factors are considered, so the results obtained only represent how many resources are currently buried in the ground. Quantity (geological resources), how much can be exploited under the current engineering technology level (technically recoverable resources), without considering ecological environmental factors and economic factors, that is, the protection of the ecological environment, various costs of drilling and shale The impac...

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