Research and application of integrated technology of chemical sand control and stratified water injection in offshore oilfields injection well
Day 2 Wed, August 10, 2022(2022)
摘要
This paper proposes an integrated technology of chemical sand control and stratified water injection in water injection well, which enlarge the inner diameter of injection well and achieve flexible stratification. The technology realizes completion by chemical sand control. The ceramsite whose surface has been treated by crosslinking agent is injected into the well and form a cement layer with a thickness of 3-5 cm. This layer can be used as a barrier to retain sand and provide channels for fluids. Then, the stratified injection string is run to realize the stratification of the injection reservoir. The position and quantity of the stratification are designed can adjust flexibly. This technology has been successfully applied in the Bohai Oilfield. The conventional sand control and injection technology makes it difficult for the actual injection rate to reach the target value. After applying the integrated technology, for a directional well with a bore diameter of 9.625 in, the maximum inner diameter can reach 7 in. The number of injection layers exceeds 5, and the actual injection volume meets the designed rate. Besides, the water cut of the beneficiary well decreases, and the oil production rate increases.
更多查看译文
关键词
offshore oilfields injection well,chemical sand control,stratified water injection
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要