Three-stage reservoir unit description and benefit development of fracture-controlled cave carbonate reservoirs in Tazhong Uplift， Tarim Basin
Received date: 2020-03-23
Revised date: 2020-04-04
Online published: 2020-12-11
Supported by
The Major Special Fund of China National Petroleum Corporation(2018E-1806)
The development of fracture-controlled cave carbonate reservoirs is faced with the production problems of low well opening rate， low accumulative production per well and low ratio of efficient wells. Based on the high-precision 3D seismic data， the large fault structure analysis is carried out， and the geological understanding of controlling the storage and accumulation of the deep and large strike-slip fault in the northeast direction is deepened， innovating the three-stage description technology for the formation of fractured-cave carbonate reservoirs. It is found that the activity intensity of different fault zones varies greatly and the development characteristics of oil and gas reservoirs vary greatly， the same fault zone can be divided into one development unit. The distribution of reservoirs in different sections of the same fault zone as well as the oil and gas properties are greatly different， the segmented features are obvious， so the same section can be divided into one geological reserve unit. With the same fluid properties， the same oil-water interface and the same pressure system can be divided into an oil-gas reservoir unit in a geological reserve unit. The technical innovation of three-stage fine description of fractured carbonate reservoir strongly supports well location deployment， reserve evaluation and old well treatment， and promotes the effective development of fractured carbonate reservoir.
Bao-zhu GUAN, Cheng ZHANG, Shi-yin LI, Jian-fa HAN, Long-fei ZHAO, Chang XIONG, Peng WANG . Three-stage reservoir unit description and benefit development of fracture-controlled cave carbonate reservoirs in Tazhong Uplift， Tarim Basin[J]. Natural Gas Geoscience, 2020 , 31(12) : 1766 -1778 . DOI: 10.11764/j.issn.1672-1926.2020.04.009
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