石油学报 ›› 2017, Vol. 38 ›› Issue (5): 502-511.DOI: 10.7623/syxb201705003

• 地质勘探 • 上一篇    下一篇

塔里木盆地地温场对油气成藏过程的控制作用——以古城墟隆起为例

庄新兵1, 顾忆1, 邵志兵1, 尤东华1, 丁勇2, 万旸璐1   

  1. 1. 中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所 江苏无锡 214161;
    2. 中国石油化工股份有限公司西北油田分公司勘探开发研究院 新疆乌鲁木齐 830013
  • 收稿日期:2016-11-22 修回日期:2017-03-22 出版日期:2017-05-25 发布日期:2017-06-07
  • 通讯作者: 顾忆,男,1962年12月生,1982年获成都理工大学学士学位,现为中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所教授级高级工程师,主要从事石油地质研究工作。Email:guyi.syky@sinopec.com
  • 作者简介:庄新兵,男,1978年2月生,2002年获山东科技大学学士学位,2011年获中国石油大学(北京)博士学位,现为中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所工程师,主要从事盆地分析与油气成藏机理研究。Email:zhuangxb.syky@sinopec.com
  • 基金资助:

    国土资源部课题(14B12XQ2302)和中国石油化工股份有限公司科技开发部项目(P16090、P15115)资助。

Control effect of geothermal field on hydrocarbon accumulation process in Tarim Basin: a case study of Guchengxu uplift

Zhuang Xinbing1, Gu Yi1, Shao Zhibing1, You Donghua1, Ding Yong2, Wan Yanglu1   

  1. 1. Wuxi Institute of Petroleum Geology, Sinopec Petroleum Exploration & Production Research Institute, Jiangsu Wuxi 214161, China;
    2. Exploration and Production Research Institute, Sinopec Northwest Oilfield Company, Xinjiang Urumqi 830013, China
  • Received:2016-11-22 Revised:2017-03-22 Online:2017-05-25 Published:2017-06-07

摘要:

塔里木盆地是中国海相碳酸盐岩油气勘探的重点区域,近几年中国石油化工股份有限公司在古城墟隆起西段奥陶系天然气勘探获得较大突破,但气藏的高温高压加大了勘探开发难度,且油气性质使得富集规律更为复杂。通过对地温场、油气碳同位素特征以及油气成藏过程剖析,认为古城墟隆起的多期构造活动使得地温异常,平面上具有剥蚀-热事件的差异演化;原油海西中-晚期聚集成藏,经历高温热蚀变,原油组分碳同位素变重;天然气为高成熟度干气,具有一定的原油裂解气的特征,喜马拉雅期聚集成藏;SHN1井成藏过程表征了热液对碳酸盐岩储层的建设作用和对油气的破坏与建设双重作用,使得奥陶系碳酸盐岩层系具有形成大型天然气藏的潜力。

关键词: 地温场, 热蚀变, 碳同位素, 流体包裹体, 成藏期次, 塔里木盆地

Abstract:

Tarim Basin is a key region for marine carbonate oil and gas exploration in China. In recent years, Sinopec has made a great breakthrough on Ordovician natural gas exploration in the west of Guchengxu uplift. However, the high temperature and pressure of gas reservoir increase exploration difficulty, and the complex oil and gas properties also result in more complicated enrichment laws. Through the analysis on geothermal field, oil and gas carbon isotopic characteristics and hydrocarbon accumulation process, it is considered that the multistage tectonic movement in Guchengxu uplift induced geothermal anomaly, showing the differential evolution of denudation-thermal events at horizontal level. The crude oil accumulated in the mid-late Hercynian, experiencing high-temperature thermal alteration, of which carbon isotopes became heavier. The natural gas is high-maturity dry gas with the characteristics of crude oil cracking gas, presenting accumulation in the Himalayan period. The accumulation process of Well SHN1 represents the constructive effect of hydrothermal fluid on carbonate reservoirs as well as both constructive and destructive effects on oil and gas, thus forming the Ordovician carbonate reservoir with huge natural gas potential.

Key words: geothermal field, thermal alteration, carbon isotope, fluid inclusion, accumulation stage, Tarim Basin

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