Geochemical method for testing and dynamically monitoring gas storage separate layer production capability of natural gas well

Abstract

The invention relates to a collecting natural gas reserve air layered yield-power determination and dynamically monitoring geochemistry method. It comprises the following steps: 1) extracting each layer natural gas of the gas recovery well, choosing and computing to obtain each reserve air layered natural gas characteristic hydrocarbon finger mark parameter; 2) extracting each layer natural gas of the gas recovery well, forming analog mixed gas sample by different mixing model and separately doing chromatographic finger mark analysis to obtain different mixing ratio of each reserve air layered natural gas and the chemistry model parameter of the characteristic hydrocarbon finger mark parameters; 3) adopting non-linear artificial nerve network intelligence learning algorithm to establish mathematical model and measuring model plate; 4) collecting the gas recovery sample to do chromatographic finger mark analysis to obtain the corresponding characteristic hydrocarbon finger mark data; 5) computing to obtain the yield-power contribution of the gas recovery each reserve air layered natural gas.

Description

Technical field: [0001] The invention relates to a method for monitoring gas reservoirs in the development and production of natural gas fields, in particular to a method for testing and monitoring the productivity contribution of gas storage stratification in a combined production gas well. Background technique: [0002] With the industrial gas flow obtained in the Yingcheng Formation of Well Xushen 1 in the Xujiaweizi Fault Depression in the northern Songliao Basin, the unobstructed daily production of the whole well was 1.18×10 6 m 3 / d of natural gas, Daqing Oilfield made a historic breakthrough in deep natural gas exploration, and deployed Xushen 2, Xushen 6 and other deep exploration wells and evaluation wells in the Xujiaweizi fault depression, all of which saw thicker gas layers and Good results, especially in Xushen 6 well 3561.0m ~ 3570.0m fracturing gas test of Yingcheng Formation obtained 522676m 3 / d High-yield industrial gas flow, in order to realize the "pro...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the existing problems of downhole operation, complex process, difficult operation, high safety requirements, high cost and long cycle in the existing gas storage stratified production capacity test, and to provide a method that can dynamically monitor the gas storage of the combined production gas well. A geochemical monitoring method for the contribution of layered production capacity, which can economically, quickly, accurately and effectively test and dynamically monitor the production capacity of gas storage layers

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