西峰油田长X油层压后产能递减相关因素分析

RELATIVE FACTORS ANALYSIS FOR PRODUCTION DECLINE AFTER FRACTURING IN CHANG X OIL ZONE IN XIFENG OIL FIELD

西峰油田长X油层压后产能递减较快,不符合油田开发的递减规律。文章从油层启动压力、储层物性、油气丰度、地层压力的保持、注采对应情况等为主要内容的储层地质条件,施工工艺水平,支撑剂回流影响等七个方面具体分析了长X油层压后产能递减的可能原因,目的是为后期长X油层的有效开发提供技术参考。

In Xifeng oil field,the reservoir Chang x oil production declined rapidly in short time after the fracturing,this situation does not comply with the natural diminishing law of oil field development.In this paper,a detailed analysis about the possible reasons of the post-fracturing oil production decline of Chang x oil zone is presented from seven aspects such as oil reservoir kickoff pressure,reservoir oil/gas physical property,oil/gas storage bearing,formation original pressure preservation,reservoir geological conditions such as injection and production situations,techniques and fracturing proppant flowback,for the purpose of providing technical information to the post-effective development of Chang x reservoir.