东辛油田注水井解堵措施等级权衡综合评判技术

Comprehensive evaluation of grade weighing on plug releasing of Injection wells in Dongxin oilfield

针对东辛油田注水井解堵措施应用选择针对性差的问题，根据东辛油田现场资料的分析与研究，基于概率统计原理，建立了等级权衡综合评判模型，并研发了计算软件。经东辛油田2002年-2005年注水井应用解堵措施的206井次进行计算验证，该模型符合率为85．43％。对5口注水井采用等级权衡综合评判法预测与评判的处理措施效果与实际应用处理后的效果等级完全一致。该技术有利于提高不同类型处理措施的应用针对性和有效性，减少处理效果差的措施应用所造成的作业工作量和施工费用，提高了注水井解堵措施工作质量和油田开发效益。

In the light of the poor pertinence of plug-releasing method selection for injection wells, the Grade weighing comprehensive evaluation model is built and the calculating software is developed based on the field documents a-nalysis and the principle of probability statistics. The research shows that the coincidence ratio is 85. 43 % and the 5 injection wells results are the same between the calculation and the application. Accordingly this technology increases the pertinence and efficiency of different measures, drops unnecessary workload and construction expense, and improves the plug- releasing quality of injection wells and beneficial result of oilfield development.