关键词: 油田开发, 注入水, 水质, 水处理, 决策方法, 增注, 经济评价

Abstract: A novel technique for water quality regulation based on economic decision-making was proposed.It evolves with the need for improving the development benefit of water-flooding reservoirs being suffered a continuous growth of water cut during the medium and later periods of oil field development.This new method takes comprehensive consideration of water quality compatibility, water treatment,water injection,stimulation measures,planned volume of water being injected and cost balance in order to lower water injection cost in oilfields.The relationship between formation damage and main water quality specification was set up based upon lots of orthonormal flowing tests.The models of cost evaluation and objective function for optimizing decision-making were established.The oilfield test shows that this method is feasible and reasonable.

Key words: water-flooding development, injection well, water quality regulation, water treatment, injection well stimulation, economic evaluation, decision-making method