海拉尔盆地油气勘探新领域、新层系及资源潜力OA北大核心CSTPCD
New areas,new strata series and resource potential of oil and gas exploration in Hailar Basin
海拉尔盆地是"十四五"(2016―2020年)大庆油田持续有效发展资源接替的重要领域,历经多年勘探,已在乌尔逊凹陷的苏仁诺尔构造带、乌东斜坡带和贝尔凹陷的贝中次凹、苏德尔特构造带、霍多莫尔构造带、呼和诺仁构造带及巴彦塔拉构造带等富油凹陷的主体构造提交了储量.面临剩余更加复杂的勘探对象,按照以往常规油气勘探思路已不能满足勘探发现的需要.为了搞清楚海拉尔盆地的剩余资源类型、成藏特征、潜力,基于盆内钻井岩心岩屑、测井、地震等资料,总结全层系、全盆地主力源岩分布、不同类型储层特征及源储组合特征,指出潜在资源类型、控制要素、分布模式、增储潜力.结果表明:富油凹陷的深凹区致密油、侏罗系塔木兰沟组、基岩潜山还具备较大勘探潜力,剩余资源总量达9.08×108 t;已经在构造带提交的常规油藏储量1.5×108 t只占总资源量的14.2%,其中致密油资源依托南屯组一段为主要源岩,源上、源下致密类型在深凹区叠置连片分布,剩余资源潜力为3.84×108 t;侏罗系塔木兰沟组自生自储,近源成藏,剩余资源潜力为2.37×108 t;潜山油藏通过通源断层、生油层不整合覆盖,源储侧接,内幕及表层一体化成藏,剩余资源潜力为2.87×108 t.研究成果可推动海拉尔盆地及其类似断陷盆地全油气资源的高效勘探,并提供技术和勘探实践参考.
Hailar Basin is an important area for sustainable and effective development of resources replacement of Daqing Oilfield for the 14th Five Year Plan(2016-2020).After years of exploration,reserves have been submitted in the main structures of oil-rich sags including Surenor structural zone and eastern slope of Urxun sag,central sub-sag,Sudelte structural zone,Huoduomo structural zone,Huhe Nuren structural zone and Bayantala structural zone in Beier sag.Faced with other more complex exploration targets,previous conventional exploration methods cannot meet the requirements of exploration discovery.In order to clarify remaining resources types,hydrocarbon accumu-lation characteristics and potential in Hailar Basin,distribution of main source rocks,characteristics of different types of reservoirs and characteristics of source-reservoir assemblages are summarized based on drilling cores and cuttings,logging and seismic data of the basin,pointing out potential resource types,controlling factors,distribu-tion patterns and reserves increasing potential.The results show that tight oil in deep sag area of oil-rich sag,Juras-sic Tamulangou Formation and bedrock buried hills still have much exploration potential,with total remaining re-source of 9.08×108 t.The submitted 1.5×108 t of reserves of conventional reservoirs in structural zones only account for 14.2%of total resources.Tight oil resources rely on the first member of Nantun Formation as the main source rocks,with superimposed and contiguous distribution of tight reservoirs above and below source rocks in deep sags and remaining resource potential of 3.84×108 t.Jurassic Tamulangou Formation has self-generated and self-pre-served oil,with near-source accumulation and remaining resource potential of 2.37×108 t.With faults connected to source rock,unconformity overlap of source rock,lateral source-reservoir connection and integrated interior and surface accumulation,buried hill reservoirs have remaining resource potential of 2.87×108 t.The research promotes efficient exploration of the whole oil and gas resources in Hailar Basin and similar rift basins,providing references for technical and exploration practices.
吴海波;于东旭;王洪伟;齐玉林;邓海;陈方举;侯思宇;吴雪姣;毕殿辉;龚永杰
中国石油大庆油田有限责任公司勘探开发研究院,黑龙江 大庆 163712
石油、天然气工程
海拉尔盆地南屯组塔木兰沟组基岩潜山主控因素勘探意义
Hailar BasinNantun FormationTamulangou Formationbedrock buried hillmain controlling fac-torexploration significance
《大庆石油地质与开发》 2024 (004)
73-82 / 10
国家科技重大专项"中石油矿业权区及周边空白区油气资源评价"(QGYQZYPJ2022-1).
评论