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喇嘛甸油田于2006年进入二类油层聚合物驱开发阶段,二类油层将分十个区块投入三次采油开发。目前已编制完成布井方案8个区块。从注采井距上看,二类油层已实施聚驱区块主要采用106m～212m注采井距,由各个区块目前开发效果可以看出,各套井距均存在一定利弊。由此,本文以指导喇南中东块二区和南中西块二区布井方案编制工作为前提,从不同井距下控制程度、井网密度、单井控制储量、提高采收率及内部收益率等多方面,对二类油层聚驱合理井距进行探讨,结合已实施聚驱区块的实际情况,得出,当注采井距为150m时,其对二类油层具有80%左右的聚驱控制程度,能保证合理的注入速度、井网密度及单井控制储量,能获得较高采收率和经济效益。
Lamadian oilfield entered the development phase of polymer flooding in the second type in 2006 and the second type oil layer in the third block in 10 blocks. At present, eight wells have been completed. From the injection well interval, the second type of reservoir has been implemented poly flooding block mainly using 106m ~ 212m injection well spacing, the current development results of each block can be seen, each set of well spacing there are some pros and cons. Therefore, based on the precondition of guiding the preparation of well layout in the second block of Central South Lansan Block and the second block of South Central South China Block, this paper analyzes the controllable degree, well density, single well controlled reserves, enhanced oil recovery and internal benefits under different well spacing Rate and other aspects of the second type of reservoir poly flooding reasonable well distance to explore, combined with the actual polycondensation block has been drawn, when the injection and production well spacing of 150m, the second type of reservoir with about 80% The degree of poly flooding control can ensure a reasonable injection rate, well density and single well control reserves, can achieve higher recovery and economic benefits.