Study on Technical and Economic Limit of Layer Recombination and Well Pattern Adjustment
Three types of displacement mode coexist in NS Development Area at present, which include water, polymer flooding, alkaline surfactant polymer flooding. The layers and well pattern staggered, and the injection—production relationship is complex, which lead to many difficulties on the adjustment of development plan. Combining with the characteristics of reservoir and the well pattern deployment, this paper introduces the economic evaluation parameters and studies the limit of exploitable reserve and the limit of effective thickness of single newly drilled well under the different crude oil price. Through the numerical simulation research, the limits of injector–producer distance, permeability differential, and maximum production well segment span are obtained. At the same time, the water flooding and the chemical flooding well pattern are considered coordinately, and the technical policy limits are summarized. The conclusion of the study will help the well pattern adjustment both the water flooding and the chemical flooding and also help to lay the foundation for the long-term development.
KeywordsTechnical and economic limits Layer recombination Well pattern adjustment Crude oil price
- 1.Hu G (2012) Study on limitation of production well segment span in multi-layer reservoirs. Xinjiang Petrol Geol 33:72 (in Chinese)Google Scholar
- 2.Ju H (2008) Study on rational well density and rational well spacing in TX Oilfield. Inner Mongolia Petrochem Ind 16:78 (in Chinese)Google Scholar
- 3.Liu Z, Wang Q, Sun Y (2014) Study and application of new technological limit for polymer flooding in field application. Petrol Geol Recovery Eff 21:22 (in Chinese)Google Scholar
- 4.Wu J, Zuo S, Zhao X (2015) Technical and economic boundaries on formation and well pattern adjustment in Lazhong block. Petrol Geol Recovery Eff 22:113 (in Chinese)Google Scholar
- 5.Yang X (2006) Determination of rational well spacing in low permeability sandstone reservoir by dynamic analysis. Special Oil Gas Reserv 13:64 (in Chinese)Google Scholar