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基于油藏实际的稠油层内水热催化裂解机理研究

许洪星 ,  蒲春生 ,  吴飞鹏

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引用本文: 许洪星, 蒲春生, 吴飞鹏. 基于油藏实际的稠油层内水热催化裂解机理研究[J]. 燃料化学学报, 2012, 40(10): 1206-1211. shu
Citation:  XU Hong-xing, PU Chun-sheng, WU Fei-peng. Mechanism of underground heavy oil catalytic aquathermolysis[J]. Journal of Fuel Chemistry and Technology, 2012, 40(10): 1206-1211. shu

基于油藏实际的稠油层内水热催化裂解机理研究

    通讯作者: 许洪星(1983-),男,山东聊城人,博士生,主要从事复杂油气藏物理化学强化开采理论与技术方面的科研工作。E-mail:xuhongxing390124@163.com。
  • 基金项目:

    国家自然科学基金(51104173, 51274229) (51104173, 51274229)

    国家科技重大专项 (2011ZX05009-004) (2011ZX05009-004)

    山东省自然科学基金 (ZR2010EM014)。 (ZR2010EM014)

摘要: 开展了稠油层内水热催化裂解技术在胜利油田的先导实验,五口井平均周期单井增油653 t,稠油初期降黏率达79.8%,措施14周后降黏率仍大于62%。利用Brookfield DV-Ⅲ黏度计、ElementarVario EL III元素分析仪、Knauer K-700蒸气压渗透仪、Agilent 6890N气相色谱仪和EQUINOX 55傅里叶变换红外光谱仪等,对措施前后稠油的物化性质进行分析。结果表明,层内水热催化裂解后稠油黏度及平均分子量减小、轻烃含量增加、重质组分含量减少、氢碳原子比增加、杂原子含量减小。稠油层内裂解反应受催化剂体系、高温水及储层矿物因素控制,催化剂是促进稠油裂解的主要因素,供氢剂及分散剂等助剂有助于提高裂解效果,高温水的酸碱性质及储层矿物对稠油具有催化裂解作用。多因素协同作用下使稠油发生脱侧链、分子链异构、断链、加氢、开环、成环、脱硫等系列反应,使得稠油大分子分解成小分子物质,降低了稠油黏度,改善了稠油品质,证实该技术在现场应用中具有可行性。

English

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  • 收稿日期:  2012-01-14
  • 网络出版日期:  2012-03-19
通讯作者: 陈斌, bchen63@163.com
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