孙国昕,马春雨,赵波,聂志阳,李艳杰,邵曌一,沈妍,李文艳
SUN Guoxin,MA Chunyu,ZHAO Bo,NIE Zhiyang,LI Yanjie,SHAO Zhaoyi,SHEN Yan,LI Wenyan

• 1:大庆油田有限责任公司勘探开发研究院
• 2:大庆油田有限责任公司第二采油厂
• 3:黑龙江省致密油和泥岩油成藏研究重点实验室

摘要(Abstract)：

海外油气勘探往往需要快速评价、快速上钻、快速上产,开展地质风险评价有利于勘探决策、规避风险。基于蒙古国境内50个凹陷、35个区带和301个圈闭资料,借鉴海拉尔盆地、塔木察格盆地的勘探经验,建立了蒙古国勘探区块"凹陷、区带、圈闭"定量评价方法。研究认为:蒙古国对外放权的勘探区块勘探程度低、地质条件复杂、勘探目标隐蔽性强、勘探难度大、勘探风险高,应用"凹陷、区带、圈闭"定量评价方法统一地质评价标准,有利于实现蒙古国全境尺度上的地质目标优选;经定量评价,从全境50个凹陷中优选Ⅰ类Ⅱ类凹陷共37个、Ⅲ类凹陷13个;Ⅰ类Ⅱ类凹陷中的35个有利区带中进一步优选Ⅰ类区带12个;从301个层圈闭中优选Ⅰ类圈闭135个、Ⅱ类圈闭140个。研究成果对各大石油公司快速评价海外油气勘探区块具有重要指导与借鉴意义。
Overseas oil and gas exploration often needs fast assessment, fast drilling and fast production. The geological risk assessment is beneficial to make the exploration decisions and avoid the risks. Based on the data of 50 sags,35 plays and 301 structural traps in Mongolia and the exploration experiences of Hailer Basin and Tamtsag Basin, a sag-play-trap quantitative evaluation method for Mongolian exploration blocks was established. The researches show that the exploration blocks decentralized by Mongolia are of low degree of exploration, complex geological conditions, high concealed exploration targets with high exploration difficulty and risk. The application of quantitative evaluation method of "sag, play and trap" to unify the geological assessment standards will promote the geological target optimization on the whole Mongolian territory scale.By the quantitative assessments, 37 Class Ⅰ & Ⅱsags and 13 Class Ⅲ sags are selected from total 50 sags, 12 Class Ⅰ plays are selected from total 35 favorable plays in Class Ⅰ & Ⅱ sags, while 135 Class Ⅰ traps and 140 Class Ⅱ traps are selected from total 301 traps. The research results can provide great guidelines and valuable references for major oil companies to rapidly evaluate overseas oil and gas exploration blocks.

关键词(KeyWords)： 蒙古国;勘探区块;凹陷;区带;圈闭;定量评价
Mongolia;exploration block;sag;play;trap;quantitative evaluation

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“大庆油气持续有效发展关键技术研究与应用”(2016E-0202)

作者(Author): 孙国昕,马春雨,赵波,聂志阳,李艳杰,邵曌一,沈妍,李文艳
SUN Guoxin,MA Chunyu,ZHAO Bo,NIE Zhiyang,LI Yanjie,SHAO Zhaoyi,SHEN Yan,LI Wenyan

DOI: 10.19597/j.issn.1000-3754.202008032

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