高温稠油掺稀降黏开采辅助降黏剂的研究与应用
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摘要
哈拉哈塘油田稠油掺稀开采过程中存在掺稀量大、能耗高等问题。为降低掺稀量,室内研发了PPH乳化降黏剂,耐温160℃,耐矿化度21.74×10~4mg/L,最优使用浓度为0.1%,该浓度下降黏率可达90.51%;在含水率30%~70%范围内均可起到较好的降黏作用,并与现场所用絮凝剂、破乳剂及脱硫剂配伍性良好;在此基础上,设计了加药工艺,进行了现场先导性试验,将试验井掺稀量降低50%,取得了良好的试验效果。
To solve the problems of large thinning dosage and high energy consumption during the viscosity-reducing development of heavy oil at Halahatang oil field,a kind of PPH emulsified thinning additive has been developed to reduce the dosage of thinning chemicals,in temperatures up to 160℃,salinity up to 21. 74 × 10~4 mg/L. Its optimal concentration used is 0. 1%,the viscosity can be reduced by 90. 51% at that concentration. The PPH can be effective when water cut within 30% ~70%,and has good compatibility with flocculants,demulsifiers and desulfurizers. Moreover,chemical adding process is defined,and pilot tests have been conducted on site with excellent results. The dosage is decreased by 50%.
To solve the problems of large thinning dosage and high energy consumption during the viscosity-reducing development of heavy oil at Halahatang oil field,a kind of PPH emulsified thinning additive has been developed to reduce the dosage of thinning chemicals,in temperatures up to 160℃,salinity up to 21. 74 × 10~4 mg/L. Its optimal concentration used is 0. 1%,the viscosity can be reduced by 90. 51% at that concentration. The PPH can be effective when water cut within 30% ~70%,and has good compatibility with flocculants,demulsifiers and desulfurizers. Moreover,chemical adding process is defined,and pilot tests have been conducted on site with excellent results. The dosage is decreased by 50%.
引文
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[10]王显光.阴-非离子型表面活性剂的合成与理化性能研究[D].中国科学院理化技术研究所,2007.
[2]宋向华,蒲春生,肖曾利,等.稠油热/化学采油技术概述[J].特种油气藏,2004(1):2-4.
[3]柳荣伟,陈侠玲,周宁.稠油降粘技术及降粘机理研究进展[J].精细石油化工进展,2008,9(4):20-25,30.
[4]张志庆,徐桂英,吴涛,等.矿化水对稠油乳化降粘剂SDGD降粘效果的影响[J].油田化学,2001(4):303-305.
[5]范维玉,刘兴玉,南国枝.GL系列特稠油乳化降粘剂及其O/W型乳状液流变性研究[J].石油大学学报,1998,22(2):48-113.
[6]李明忠,赵国景,张乔良,等.耐盐稠油降粘剂的研制[J].精细化工,2004,21(5):380-391.
[7]谭晶,曹绪龙,李英,等.油/水界面表面活性剂的复配协同机制[J].高等学校化学学报,2009,30(5):949-953.
[8]朱静,李传宪,辛培刚.降粘剂结构对稠油降粘效果的影响[J].石油化工高等学校学报,2011,24(3):39-42.
[9]肖进新,赵振国.表面活性剂应用原理[M].北京:化学工业出版社,2002:344-347.
[10]王显光.阴-非离子型表面活性剂的合成与理化性能研究[D].中国科学院理化技术研究所,2007.