Fine study on single sand body and measures for tapping the potential of residual oil during polymer flooding in Pubei reservoir of Daqing

2016 International Conference on New Energy and Future Energy System

Meng, Y.J.^1

Oil Recovery Plant No.7, Daqing Oilfield Corp. Ltd., Daqing, Heilongjiang

163517, China^1

关键词: Distributary channels;    Distribution characteristics;    Internal structure;    Reservoir property;    Sedimentary environment;    Simulation technologies;    Single sand bodies;    Technical support;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/40/1/012077/pdf
DOI  :  10.1088/1755-1315/40/1/012077

来源: IOP

【 摘 要 】

In order to effectively guide the narrow channel sand body oil fields to exploit, according to the sand body distribution characteristics and geological genesis of narrow channel sand body oil fields, the type of single sand body is clarified. By means of identification of logging curves and correlation of well-tie profile, the internal structure of single sand body is recognized. and then the remaining oil genesis, distribution characteristics and the potential areas for polymer flooding are clarified by combining numerical simulation technology and dynamic analysis technology, and the remaining oil potential tapping method is designed by taking into consideration various factors including the characteristics of the remaining oil, reservoir property and product dynamic character. The result shows that the single sand body is divided into five types including multiphase channel superposition, distributary channel, single channel, sheet sand and lenticular sand. Potential remaining oil mainly are distributed in thick oil layers of multiphase channel superposition type and distributary channel type in which channel sands were developed and sedimentary environment are stable inner front facies and lake regressive inner front facies. The remaining oil is developed by optimizing the parameters of polymer flooding and combining many different measures. The study provides technical support for the efficient exploration for polymer flooding.