A new method of production splitting for multilayer commingled gas well

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  • 1.College of Petroleum Engineering,China University of Petroleum,Beijing 102249,China;
    2.LWD Logging Center,China Petroleum Logging Co.Ltd.,Xi’an 710065,China

Received date: 2015-09-23

  Revised date: 2015-11-12

  Online published: 2019-09-19

Abstract

On the basis of studying catastrophe theory,in full consideration of each production layer’s reserve characteristics,development characteristics,and geological characteristics,a new production splitting method for multilayer commingled gas well was built with the application of the catastrophe theory for first time.A swallow tail catastrophe model consisted of three subsystems of reserve characteristics which included net pay thickness,porosity and gas saturation,and three subsystems of development characteristics which included permeability,interference factor,middle pressure,a butterfly catastrophe model consisted of four subsystems of geological characteristics,which included sedimentary microfacies,sandstone content,reservoir density and depth were established.Based on the target value of each subsystem and relative break surface,each layers’ production splitting factor was calculated.The calculating process of the new method was introduced through the example in detail,then production splitting calculation of twelve multilayer producers in the southern district of Yulin Gasfield was conducted with the new method.The results showed that the new method was comprehensively considered,with high reliability and fast calculation speed features,and the precision of this new method is greatly improved.

Cite this article

Gu Dai-hong, Cui Guo-feng, Liu Guang-feng, Ding Dao-quan . A new method of production splitting for multilayer commingled gas well[J]. Natural Gas Geoscience, 2016 , 27(7) : 1346 -1351 . DOI: 10.11764/j.issn.1672-1926.2016.07.1346

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