Study on Technical and Economic Limit of Layer Recombination and Well Pattern Adjustment

Abstract

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.

Copyright 2017, Shaanxi Petroleum Society.

This paper was prepared for presentation at the 2017 International Field Exploration and Development Conference in Chengdu, China, 21–22 September 2017.

This paper was selected for presentation by the IFEDC&IPPTC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC&IPPTC Committee and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC&IPPTC Committee, its members. Papers presented at the Conference are subject to publication review by Professional Committee of Petroleum Engineering of Shaanxi Petroleum Society. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of Shaanxi Petroleum Society is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC&IPPTC. Contact email: paper@ifedc.org or paper@ipptc.org.