西南石油大学学报(自然科学版)

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Prediction of the Drainage Volume of Shale Gas Reservoir with Fast#br# Marching Method

TENG Bailu*, CHENG Linsong, HUANG Shijun, JIA Zhen, AI Shuang   

  1. College of Petroleum Engineering,China University of Petroleum(Beijing),Changping,Beijing 102249,China
  • Online:2016-04-11 Published:2016-04-11

Abstract:

The development of unconventional energy,especially shale gas reservoir,is getting more and more attention;
however,prediction of the drainage volume of shale gas reservoir is to be improved. Fast marching method is a fast and
efficient method to present the front of the pressure. Taking into account desorption and slippage,the flow regions can be
divided with the compound linear flow model by Van Kruysdijk. The Eikonal equation of the matrix and the fracture can be
obtained and solved with fast marching method,then drainage volume of the reservoir at different time can be obtained,and
the comparison of the condition whether or not considering desorption and the effect of slippage can be seen easily. The result
shows that slippage accelerates the increase of drainage volume and desorption slows the increase of drainage volume. The
influence of slippage is greater than desorption.

Key words: shale gas, fast marching method, drainage volume, multi-stage fracture, horizontal well

CLC Number: