中高含水期油藏开发技术改造的实践与认识

The Research of Reservoir Development Technology in the Moderate-high Water Cut Stage

文 95块采出程度 2 2 .65 %,采油速度 0 .63%,年均含水率 78.69%。为了改善该块的开发效果 ,开展油藏精细描述 ,深化剩余油研究 ,加深对剩余油分布的认识 ,实施了以恢复完善剩余油富集区注采系统为主要内容的开发技术改造 ,增加了水驱动用储量和可采储量 ,开发水平显著提高 ,油藏在采出程度高达 30 %的情况下 ,采油速度以 1 .5 %以上稳产了 3a。

Wen 95 Fault Block was put into production in 1983,it was into midding high water cut period until 1995,output extent is 22.65%,oil recovery speed is 0.63%,yearly average water cut is 78.69%.To improve this fault block’s development effection,fine reservoir description,further remaining oil research were done since 1996,the cognition of remaining oil distribution was deepened.Injection production adjustment,whose main target is to recover and complete injection system has been implemented.By means of these,production decline’s passive situation was effectively reversed,producing reserves driven by water and recovable reserves were increased,development level was improved remarkably.Oil production lasted for three years at the speed of 1.5% in the condition of output extent at 30%.The practice of technology reconsturction made us realized that:good development effection will be based on technology reconstruction,under the conditionds of the oil pool came to hit hight water cut period and remaining oil was scattered.