An alternative approach to match field production data from unconventional gas-bearing systems  

作　　者：Zhi-Gang Zhang Yan-Bao Liu Hai-Tao Sun Wei Xiong Kai Shen Quan-Bin Ba 

机构地区：[1]National Key Laboratory of Gas Disaster Detecting,Preventing and Emergency Controlling,Chongqing 400037,China [2]Chongqing Research Institute of China Coal Technology and Engineering Group Crop.,Chongqing 400037,China [3]School of Resources and Safety Engineering,Chongqing University,Chongqing 400045,China

出　　处：《Petroleum Science》2020年第5期1370-1388,共19页石油科学（英文版）

基　　金：financially supported by the National Key Research and Development Programme(Grant Nos.2016ZX05067004-004 and 2016ZX05043005-003);the Chongqing Science and Technology Innovation Leader Talent Support Programme(Grant No.CSTCKJCXLJRC14)。

摘　　要：Nowadays,the unconventional gas-bearing system plays an increasingly important role in energy market.The performances of the current history-matching techniques are not satisfied when applied to such systems.To overcome this shortfall,an alternative approach was developed and applied to investigate production data from an unconventional gas-bearing system.In this approach,the fluid flow curve obtained from the field is the superposition of a series of Gaussian functions.An automatic computing program was developed in the MATLAB,and both gas and water field data collected from a vertical well in the Linxing Block,Ordos Basin,were used to present the data processing technique.In the reservoir study,the automatic computing program was applied to match the production data from a single coal seam,multiple coal seams and multiple vertically stacked reservoirs with favourable fitting results.Compared with previous approaches,the proposed approach yields better results for both gas and water production data and can calculate the contributions from different reservoirs.The start time of the extraction for each gas-containing unit can also be determined.The new approach can be applied to the field data prediction and designation for the well locations and patterns at the reservoir scale.

关 键 词：Gaussian function Flow rate Unconventional gas Ordos Basin Gas-bearing reservoirs 

分 类 号：TE37[石油与天然气工程—油气田开发工程]