三塘湖盆地油气勘探开发新领域、新类型及资源潜力  

New fields,new types and resource potentials of oil-gas exploration and development in Santanghu Basin

作　　者：支东明 李建忠 周志超 焦立新[2] 范谭广[2] 李斌 梁辉[2] 王兴刚[2] Zhi Dongming;Li Jianzhong;Zhou Zhichao;Jiao Lixin;Fan Tanguang;Li Bin;Liang Hui;Wang Xinggang(Petrochina Tuha Oilfield Company,Xinjiang Hami 839009,China;Research Institute of Exploration and Development,PetroChina Tuha Oilfield Company,Xinjiang Hami 839009,China)

机构地区：[1]中国石油吐哈油田公司,新疆哈密839009 [2]中国石油吐哈油田公司勘探开发研究院,新疆哈密839009

出　　处：《石油学报》2024年第1期115-132,共18页Acta Petrolei Sinica

基　　金：新疆维吾尔自治区科学技术厅“天山英才”培养计划科技创新领军人才项目“北疆地区二叠系超级盆地全油气系统地质理论研究与战略接替领域优选”(2022TSYCLJ0070);中国石油天然气股份有限公司前瞻性基础性技术攻关项目“含煤盆地富油煤岩石物理响应与测井方法研究”(2021DJ3805)资助。

摘　　要：过去30年,三塘湖盆地在侏罗系低压砂岩油藏、二叠系凝灰岩油藏和石炭系火山岩风化壳油藏的油气勘探开发中取得了重要进展,探明石油地质储量为1.68×10^(8)t,建成56×10^(4)t/a的原油产能。三塘湖盆地剩余油气资源潜力大,但已探明未动用储量不足,需要落实油气勘探开发新领域和新类型,实现新的发现和突破,支撑稳健可持续的油气生产。基于盆地构造、烃源岩分布、储层特征研究及煤岩实验取得的认识,提出了南部冲断带、洼陷区页岩油、源边粗碎屑油藏和石炭系火山岩内幕型油藏4个新领域,其石油地质资源量分别为0.86×10^(8)t、2.45×10^(8)t、0.69×10^(8)t和0.96×10^(8)t,以及侏罗系西山窑组煤层气和八道湾组富油煤2种新类型,其煤层气资源量为1427×10^(8)m^(3),焦油资源量为60.20×10^(8)t,资源潜力大,勘探开发前景广阔。根据勘探程度、地质条件和开发技术,按照战略展开、战略突破和战略准备3个层面进行了部署安排。Over the past 30 years,significant progress has been made in the oil-gas exploration and development of Jurassic low-pressure sandstone reservoirs,Permian tuff reservoirs,and Carboniferous volcanic weathering crust reservoirs in Santanghu Basin,with the proved geological reserves of 168×10^(8)t and a production capacity of crude oil of 56×10^(4)t/a.The remaining oil-gas resources in Santanghu Basin have great potentials,but the proved unused reserves are insufficient.It is necessary to expand new fields and implement new types of oil-gas exploration and development,so as to achieve new discoveries and breakthroughs,and support stable and sustainable oil-gas production.Based on the understandings from the recent research on basin structure,source rock distribution,reservoir characteristics,as well as coal rock experiment,four new fields are proposed,i.e.,southern thrust belt,shale oil in subsag areas,megaclast reservoirs at the near-source margin,and interior reservoirs in Carboniferous volcanics,with the petroleum geological resources of 0.86×10^(8)t,2.45×10^(8)t,0.69×10^(8)t and 0.96×10^(8)t,respectively.Also,two new types are proposed,i.e.,coalbed methane in Jurassic Xishanyao Formation and tar-rich coal in Badaowan Formation,with the coalbed methane resources of 1427×10^(8)m^(3)and tar resources of 60.1×10^(8)t,respectively.There is great resource potentials and broad prospects for exploration and development.Based on the hydrocarbon exploration degrees,geological conditions,and development technologies,deployments and arrangements were made at three levels,i.e.,strategic deployment,strategic breakthrough,and strategic preparation.

关 键 词：资源潜力 勘探开发 前陆冲断带 页岩油 火山岩油藏 煤基油气 三塘湖盆地 

分 类 号：TE132.1[石油与天然气工程—油气勘探]