苏里格凝析油乳液破乳剂的筛选研究
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摘要
目前,随着苏里格气田的扩大开采,现场泡排剂与消泡剂的用量加大导致后期采出液乳化严重,凝析油、水、药剂以及机械残渣形成均匀稳定乳液,破乳困难,严重影响其中凝析油的回收利用。因此筛选出高效快速的凝析油乳液用破乳剂对气田的后期开采以及凝析油的回收利用具有重大意义。本文针对苏里格气田现场条件,确定破乳实验方法,筛选出效果较好的破乳剂XX103和XX302,通过复配,确定最佳的破乳剂配比为1∶3,现场最佳使用质量分数为0.7%,最短破乳时间为12h。
The amount of bubble discharge agent and defoamer in gas extraction wells increases, resulting in serious emulsification of late extraction fluid. Water, gas condensate, pharmaceutical and mechanical residues form uniform and stable emulsion. It affects the recovery and utilization of condensate in the produced emulsion.Therefore, screening efficient and fast demulsifier for recovery of condensate from produced liquid is of great significance for the later stage production of gas field and the recovery and utilization of condensate. In this paper,the method of demulsification is determined according to the conditions of Sulige field. The laboratory screened 21 kinds of demulsifier, determined that the demulsifier XX103 and XX302 had the best demulsification effect, the best ratio is 1:3,and the best use application amount is 0.7%,the shortest demulsification time is 12 hours.
The amount of bubble discharge agent and defoamer in gas extraction wells increases, resulting in serious emulsification of late extraction fluid. Water, gas condensate, pharmaceutical and mechanical residues form uniform and stable emulsion. It affects the recovery and utilization of condensate in the produced emulsion.Therefore, screening efficient and fast demulsifier for recovery of condensate from produced liquid is of great significance for the later stage production of gas field and the recovery and utilization of condensate. In this paper,the method of demulsification is determined according to the conditions of Sulige field. The laboratory screened 21 kinds of demulsifier, determined that the demulsifier XX103 and XX302 had the best demulsification effect, the best ratio is 1:3,and the best use application amount is 0.7%,the shortest demulsification time is 12 hours.
引文
[1]吴杰,吴永春.“泡排”乳化凝析油破乳剂筛选评价实验研究[J].石化技术2017(5):218-219.
[2]刘云云,陈旭.大牛地气田凝析油乳化物甲醇破乳试验研究[J].内蒙古石油化工,2016(9):1-2.
[3]杨林江,温宏刚,张玉玺.大牛地气田乳化物形成机理、防治方法研究及应用[J].天然气技术与经济,2016,10(1):43-45.
[4]李学仁,王惠清.凝析油实现低温破乳[J].中国石化报,2007(7):1.
[5]石油天然气行业标准SY5281-2000《原油破乳剂使用性能检测方法瓶试法》.
[2]刘云云,陈旭.大牛地气田凝析油乳化物甲醇破乳试验研究[J].内蒙古石油化工,2016(9):1-2.
[3]杨林江,温宏刚,张玉玺.大牛地气田乳化物形成机理、防治方法研究及应用[J].天然气技术与经济,2016,10(1):43-45.
[4]李学仁,王惠清.凝析油实现低温破乳[J].中国石化报,2007(7):1.
[5]石油天然气行业标准SY5281-2000《原油破乳剂使用性能检测方法瓶试法》.