塔里木盆地寒武系深层油气赋存相态研究

马安来; 金之钧; 刘金钟

doi:10.11781/sysydz201506681

塔里木盆地寒武系深层油气赋存相态研究

doi: 10.11781/sysydz201506681

1.
中国石化石油勘探开发研究院, 北京 100083
2. 中国科学院广州地球化学研究所, 广州 510640

基金项目: 国家重点基础研究发展计划(973计划)项目(2012CB214800,2005CB422108)、中石化科技部项目(P07021)及国家重大专项项目(2011ZX05005-001,2008ZX05005-001)联合资助。

详细信息

作者简介:
马安来(1969—),男,博士,副教授,从事油气地球化学与油气成藏机理研究。E-mail:maal.syky@sinopec.com

中图分类号: TE122.1
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出版历程
- 收稿日期: 2015-03-30
- 修回日期: 2015-09-17
- 刊出日期: 2015-11-28

Hydrocarbon phase in the deep Cambrian of the Tarim Basin

1.
SINOPEC Petroleum Exploration and Production Research Institute, Beijing 100083, China
2. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510640, China

摘要

摘要: 塔里木盆地寒武系深层烃类相态是地球化学家和石油勘探家密切关注的科学问题。应用封闭体系黄金管热模拟方法,对塔里木盆地塔河油田稠油、正常原油、高蜡原油进行热模拟实验。在频率因子为1.78×10¹⁴s^-1的前提下,塔河油田奥陶系井稠油具有最宽的C₁-C₅质量生成的活化能分布,分布范围为56~66 kcal/mol,主频活化能最低,为59 kcal/mol。根据原油转化率,使用Kinetic软件计算表明原油作为油相可以存在于178~205℃的储层中。依据塔里木盆地塔北、塔中、塔东、巴楚4个古隆起典型钻井寒武系古地温演化,建立了4个古隆起寒武系古油藏裂解动力学模型。模型表明塔北隆起塔深1井寒武系建隆Ⅰ顶部的古油藏至今可以保持独立油相状态,建隆Ⅰ底部的古油藏能保持凝析油状态。巴楚、塔中、塔东地区典型寒武系钻井模拟表明,寒武系中的烃类可能以天然气、凝析油为主要相态类型。
- 原油稳定性 /
- 原油裂解 /
- 生烃动力学 /
- 油气相态 /
- 寒武系 /
- 塔里木盆地
Abstract: The hydrocarbon phase of the deep Cambrian in the Tarim Basin is a scientific focus of geochemists and explorationists. Thermal simulations of heavy oil, normal oil and waxy-oil from the Tahe Oilfield in the Tarim Basin were carried out using a gold-tube confined system. For a frequency factor (A) of 1.78×10¹⁴s^-1, the activation energy range of C₁-C₅ gas yield of heavy oil is the widest, ranging from 56 to 66 kcal/mol, and the dominant potential is at 59 kcal/mol. In view of the ratio of oil conversion to gas, oil can be a separate phase at temperatures of 178-205℃. According to the paleo-temperatures of the Cambrian wells from the Tabei, Tazhong, Tadong and Machu uplifts, four dynamic models of the Cambrian reservoir cracking were established. The paleo-oil reservoir of well Tashen1 in the Tabei Uplift can be as a separate oil phase above Builtup Ⅰ in the Cambrian at present, whereas only condensate oil phase existsat the bottom of the UpliftⅠ. The models of the Cambrian paleo-oil reservoirs of typical wells from the Bachu Uplift, Tazhong Uplift and Tadong Uplift suggest that the hydrocarbon phase of the above areas may be dominated by gas and condensate phases.
- oil stability /
- oil cracking /
- hydrocarbon generation kinetics /
- hydrocarbon phase /
- Cambrian /
- Tarim Basin

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