桑吉油气田稠油井掺水生产试验效果

Effect of Water-mixed Production Test for Heavy Oil Wells in Sangji Oil and Gas Field

桑吉油气田目前大部分稠油井采用加药生产,生产过程中药用量大,成本高。经过长远距离的集输后容易凝管,导致管线和地面系统堵塞,给生产和集输带来了巨大的困难。针对桑吉油气田后期出底油原油物性差、开采和集输困难、部分井亏空严重供液不足的问题,2017年2月展开了稠油开采的自主摸索和现场试验,通过工艺流程改造和掺水生产解决了现场稠油开采、集输、水合物冻堵的问题。现场取得了显著的效果,为作业区后期稠油开采提供了新的技术支持。

At present,most of the heavy oil wells in the Sangji oil and gas field are produced by dosing.The amount of traditional Chinese medicine in the production process is large and the cost is high.After long-distance gathering and transportation,it is easy to coagulate and lead to clogging of pipelines and ground systems.This has brought great difficulties to production and gathering.In response to the poor physical properties of crude oil produced in the later period of the Sangji oil and gas field,difficulties in extraction and gathering,and insufficient liquid supply in some wells,the operation area began self-exploration and on-site testing of heavy oil production in February 2017.And the mixed water production solves the problems of heavy oil extraction,gathering and transportation,and hydrate freezing and blocking.The site achieved remarkable results and provided new technical support for the heavy oil production in the later stage of the operation area.