大庆石油地质与开发2011，Vol.30Issue(5)：130-134,5.DOI:10.3969/J.ISSN.1000-3754.2011.05.029
大庆油田北一二排西部分质聚合物驱试验效果
FIELD TEST RESULTS OF THE SPLIT-QUALITY POLYMER FLOODING IN WEST N1-2-P OF DAQING OILFIELD
摘要
Abstract
The polymer-flooding pilot-test area in T Formation oil reservoirs of West N1-2-P is the first upwards-going experiment whose injector spacing reduced to 175 m. All the oil layers of the area are perforated so as to determine technical limits of the Class II oil reservoirs. The exposed main problems in the course of the test are that for the channel sands and oil layers whose effective thickness more than lm, under the conditions of 115 m well spacing and 16 million molecular weight, the developed degrees of the oil reservoirs are all up to 80% ; on the contrary , the oil layers whose thickness less than 1 m, the continuously developed proportion is only 30% , and further more the non-tabulated reservoirs can not be produced successively. In order to solve the contradictions within and between layers and furthermore tap the potentials of various types of oil layers in the pilot area, the split-quality experiments of polymer flooding with different molecular weights are caught out according to the different properties of oil reservoirs. The results show that the matched molecular weights and injection concentrations according to the a-bove features can enhance the injection capacity and enlarge the swept volume of the polymer. The polymer flooding can improve oil-displaced efficiency and furthermore enhanced oil recovery.关键词
大庆油田/二类油层/分质/聚合物驱Key words
Daqing Oilfield/Class II oil reservoir/split-quality/polymer flooding分类
能源科技引用本文复制引用
王振东,李瑞升,吕艳波..大庆油田北一二排西部分质聚合物驱试验效果[J].大庆石油地质与开发,2011,30(5):130-134,5.基金项目
中国石油勘探与生产分公司油田开发重点科技项目“大庆萨中二类油层化学驱研究”(070120-1)资助. （070120-1）
