关键词: 老井, 单井效益评价, 无效井治理跟踪, 措施效益评价

Abstract: To keep the production of old oilfields stable and improve the profitability of old wells, this paper studies and creates the fine performance control method and indexes system which includes evaluating the economic performance of old wells, appraising performance of the stimulating measures for oil wells and follow-up evaluating treatment of ineffective oil wells. Based on databank and big data technology, the system reconstructs the appraisal model with increase and subdivision of measure-taking additional oil index, cost index and performance index as well as perfection of the evaluation links after the measures-based performance. Taking A and B oil production plants of a certain oilfield for example, this paper makes a multi-dimensional analysis of the old-well performance-related indexes between 2016 and 2020, such as cost analysis and formulation of the quota, performance of the block, and performance of the measures, comprehensively strengthening old-well performance benchmarking management. A series of measures, such as subdivision and analysis of the cost, enhanced treatment of ineffective wells, strict demonstration of the measures and enhancement of prediction on old well performance, providing the decision-making basis for keeping the old wells of oilfield stable and formulating the measures for higher production. Those measures accurately help the company improve the quality and performance and reduce damages and losses.