克拉玛依油田砾岩油藏经济极限含水率初步研究

A PRELIMINARY STUDY OF ECONOMIC LIMIT WATER CUT INCONGLOMERATE RESERVOIRS.KARAMAY OILFELD

根据投入产出平衡原理，在分析克拉玛依水驱砾岩油藏采油成本的构成、变化的基础上，提出了经济极限含水率的测算方法；选择了部分典型层块进行测算，确定一类油藏的经济极限含水率为９２％，二、三类油藏经济极限含水率为９０％。当含水率９３．５％时为油田低效一无效循环的超高含水率界限。

Based on the input-Output balance theory,a methodfor estimating eco-nomic limit water cut is presented through analyses of components and changes of produc-tion cost of waterflooding conglomerate reservoirs in Kararamay oilfield. Results of its appli-cation in typical reservoirs showed that economic limit water cut is 92%for the lst-classresetvoirs, and 90%for the 2nd-and 3rd-class reservoirs. Ultra-high water cut bound forcyclic low-efficiency to inefficient oilfield operation is 93.5%.