摘要
塔里木盆地塔北隆起哈拉哈塘油田发现于2009年,是塔里木盆地碳酸盐岩原油增储上产的重要领域。哈拉哈塘油田具有复杂的油气成藏过程与油气分布,地质认识、勘探指导思路历经多次转变,经历了碎屑岩、礁滩体、层间岩溶与断控岩溶等多种类型油气藏勘探阶段。通过油田的勘探历程与勘探开发生产资料的综合分析,认识到受断裂、岩溶和不整合面等多因素控制的缝洞型储层是油气赋存的主要场所,走滑断裂控制了油气的分布与富集,油田具有复杂的油气成藏与分布规律。哈拉哈塘油田的勘探实践表明:优越的石油地质条件是形成大油田的基础,地质认识的突破是发现复杂大油田的关键,物探技术进步是复杂油田勘探开发的保障,勘探开发一体化是碳酸盐岩快速增储上产的有效途径。该案例研究对国内外类似的缝洞型碳酸盐岩油田的勘探开发具有重要借鉴意义。
Halahatang Oilfield in the northern Tarim Basin was discovered in 2009,and obtained proven oil geological reserves of 2.47×108 t in the Ordovician carbonates by 2015.It is an important field for increasing reserves and production of crude oil from carbonate rocks in Tarim Basin.However,the geological conditions of the oilfield are so extremely complex that geological understanding and exploration guidance have undergone many changes,and Halahatang Oilfield has experienced many types of hydrocarbon reservoir exploration stages,such as siliciclastic rock trap,reef-shoal reservoir,interlayer karstic reservoir and fault-related karstic reservoir.Based on comprehensive analysis of the exploration history and exploration and development production data of the oilfield,it is recognized that the fracture-cave reservoir controlled by multiple factors such as faults,karstification and unconformity is the major place for oil and gas occurrence.Further,the distribution and enrichment of oil and gas controlled by the strike-slip faults have complex rules,and the strike-slip faults could connect the Cambrian source rocks to form large-scale petroleum accumulation and preservation.The exploration example of Halahatang Oilfield shows that the superior petroleum geological conditions are the basis for the formation of large oil fields,the breakthrough of geological understanding is the key to the discovery of complex large oil and gas fields,the progress of geophysical prospecting technology is the guarantee for the exploration and development of complex oil and gas fields,and the integration of exploration and development is an effective way to rapidly increase the reserves and production of carbonate rocks.It is suggested that the discovery and exploitation of deep complicated oilfield is depended on the favorable petroleum accumulation condition and geological understanding of the explorer,and appropriate seismic technology and the integrated organization of exploration and development.This case study has important reference
作者
杨海军
张银涛
关宝珠
李飞
蔡泉
YANG Haijun;ZHANG Yintao;GUAN Baozhu;LI Fei;CAI Quan
出处
《海相油气地质》
CSCD
北大核心
2023年第2期113-122,共10页
Marine Origin Petroleum Geology
基金
中国石油天然气股份有限公司科技重大专项“塔北碳酸盐岩勘探开发技术研究与应用”(编号:2015E-1805)和“缝洞型碳酸盐岩油气藏效益开发关键技术研究与应用”(编号:2018E-1806)资助。
关键词
碳酸盐岩
缝洞型
油气勘探
奥陶系
哈拉哈塘
塔里木盆地
carbonate rock
fracture-cave
oil and gas exploration
Ordovician
Halahatang
Tarim Basin
