A systematic step-wise approach for shale gas assessment in undeveloped prospects:A case study of Lurestan shale gas area in Iran  

作　　者：ABDOLLAHI Reza MOTAHHARI Seyed Mahdia ASKARI Amir Abbas HEMATPUR Hamed ZAMANI Ziba TIRTASHI Rahim Bagheri DARYABANDEH Manouchehr CHEN Hao 

机构地区：[1]EOR Research Department,Research Institute of Petroleum Industry,Tehran 1485613111,Iran [2]Geosciences Department,Research Institute of Petroleum Industry,Tehran 1485613111,Iran [3]Geochemistry Department,Exploration Directorate,National Iranian Oil Company,Tehran 1994814695,Iran [4]College of Safety and Marine Engineering,China University of Petroleum-Beijing,Beijing 102249,China

出　　处：《Petroleum Exploration and Development》2022年第3期596-604,共9页石油勘探与开发（英文版）

摘　　要：Key parameters and evaluation methods of shale gas show that it is not possible to guarantee the commercial and economic development of shale gas by sorting out geological sweet spots only according to technical indicators.A research method combining technical indicators including total organic carbon content and vitrinite reflectance with economic indicators including internal rate of return and investment payback period is proposed to screen the best technological and economic development sweet spots in undeveloped areas.This method was used to evaluate the best technological and economic development sweet spots in Cretaceous shale gas reservoirs S_(1) and S_(2) of Lurestan area,Iran.Twenty-one geologic sweet spots were picked out based on effective reservoir thickness,vitrinite reflectance and gas content.Based on analogy method,the pressure gradient,clay mineral content,buried depth and other parameters were taken as comparative indicators,the Eagle Ford shale as comparison object,recovery factor and production curve were extracted to estimate the technologically recoverable reserves of the study area.On this basis,the economic indexes such as internal rate of return and investment payback period were used to evaluate the economy of the geological sweet spots.In the case of P_(10) distribution,the total technologically recoverable reserves and economically recoverable reserves are 7875×10^(8)m^(3) and 4306×10^(8)m^(3) respectively,11 geological sweet spots have commercial development value,among which,No.1 sweet spot has the highest value,with a net present value of 35×10^(8) USD.

关 键 词：shale gas geological sweet spot techno-economic area economic evaluation Iran Lurestan region CRETACEOUS 

分 类 号：TE37[石油与天然气工程—油气田开发工程] P618.13[天文地球—矿床学]