摘要
柴达木盆地天然气资源丰富,包括柴西古近系—新近系油型气、柴北缘侏罗系煤型气及柴东第四系生物气、新近系热成因气及石炭系煤型气。近几年,柴北缘侏罗系煤型气获得突破,勘探潜力大。通过对柴北缘天然气地质条件的分析,总结了富烃凹陷区古隆起、源外古隆起—古斜坡、源上晚期构造带3类成藏模式,优选类比法和成因法客观评价了柴北缘天然气资源,计算得出天然气地质资源总量为11 457.5×10~8 m^3。在此基础上,结合勘探现状,理清了剩余资源及其分布,剩余天然气地质资源量为10 671.28×10~8 m^3,主要分布于鄂博梁—葫芦山区块及阿尔金山前东段区带。根据研究成果,指出鄂博梁—冷湖构造带、阿尔金山前东段、中下侏罗统凹陷—斜坡区是柴北缘天然气勘探有利目标区。
The natural gas resource is abundant in Qaidam Basin,including Tertiary oil-type gas in the west, Jurassic coal-type gas in the northern margin and Quaternary biogenetic gas, Neogenthermogenic gas and Carboniferous coal-type gas in the east of the Qaidam Basin.In recent years,Jurassic coaly gas in the north- ern margin of Qaidam Basin has achieved a breakthrough and great exploration potential.Based on the anal- ysis of natural gas geological conditions, summarizes the palaeo-uplift in the rich hydrocarbon sag area, ex- trinsic uplift-slope and late tectonic gas accumulation model, and evaluates the conventional natural gas re- sources in the northern margin of the basin with analogies and genetic methods, a total resource of 11 457.5×10^8m^3.On this basis,combined with the current situation of exploration,the remaining resources and their distribution were clarified, and the amount of remaining natural gas geological resources was 10 671.28×10^8m^3 is mainly distributed in the Eboliang-Gourd mountain block and eastern zone in front of Alkin Mountains. According to the research results,it is pointed out that the Eboliang -Lenghu tectonic belt,the eastern section of Alkin piedmont, and the Middle-Lower Jurassic depression-slope area are the fa- vorable target areas for natural gas exploration in the northern margin of Qaidam Basin.
作者
马达德
袁莉
陈琰
周飞
吴志雄
雷涛
朱军
Ma Da-de;Yuan Li;Chen Yan;Zhou Fei;Wu Zhi-xiong;Lei Tao;Zhu Jun(PetroChina Qinghai Oilfield Company,Dunhuang 736202,China)
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2018年第10期1486-1496,共11页
Natural Gas Geoscience
基金
中国石油天然气集团公司重大科技专项"第四次油气资源评价"(编号:2013E-0502)
国家科技重大专项"柴达木盆地致密油资源潜力
甜点区预测及关键技术应用"(编号:2016ZX0506)
国家科技重大专项"柴达木复杂构造区油气成藏
关键勘探技术与新领域目标优选"(编号:2016ZX05003-006)联合资助
关键词
柴北缘地区
煤型气
资源潜力
勘探方向
On the northern margin of Qaidam Basin
Natural gas
Resource potential
Exploration direction
