Residual Oil Distribution Law and Controlling Factors of Chang 6 Reservoir in Liutai Area

Abstract:

Because of the high heterogeneity, late water flooding and irregular well network, the distribution law of residual oil reserve in Chang 6 reservoir becomes much complicated. Combining the geology with dynamics of the reservoir, volumetric and formation coefficient methods are adapted to calculated the residual reserves, and then the distribution laws and controlling factors are analyzed. The results indicate that: there are still large amounts of residual reserve in main layer Chang 6₂²; the residual reserve can be classified into three kinds, Class I and class II are distributed concentrative in main layer; the controlling factors include property, sedimentary facies, heterogeneity, well network controlling and geological structure and so on. Finally, according to the distribution laws and controlling factors, targeted measures are proposed. The studying results provide well foundations for improving recovery of residual oil reserves and the total recovery of the reservoir.

• Periodical: Advanced Materials Research (Volumes 1010-1012)
• Pages: 1735-1739
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1010-1012.1735
• Online since: August 2014
• Authors: Feng Run Zhang*, Ai Hua Guo, Huai En Cai
• Keywords: Controlling Factors, Distribution Law, Residual Oil Reserve, Tapping Measures Well

References

[1] HAN Dakuang. Discussions on countermeasures and technical routes for redevelopment of high water oilfields [J]. Petroleum Exploration and development, 2010, 37(5) : 583-591.

DOI: 10.1016/s1876-3804(10)60055-9

[2] HAN Dakuang. Precisely predicting abundant remaining oil and improving the secondary recovery of mature oil-fields [J]. Acta Petrolei Sinica, 2007 , 28 (2) : 73-78.

[3] Xu Hui, LIN Cheng-yan etc. Remaining oil distribution law and potential tapping measures of subaqueous distributary channel single sandbody[J]. Journal of China University of Petroleum, 2013, 37(2): 14-17.