Strategy of Hydrocarbon Exploration in the Petroleum System of the Northern Qa idam Basin
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摘要: 柴达木盆地北缘侏罗系含油气系统具有巨厚的下侏罗统湖相泥岩和中侏罗统煤系地层。烃源岩有机质丰度高,有机质类型主要为Ⅱ—Ⅲ型,生烃期集中在喜山运动中晚期(E3—N1 )。本地区既有中生代古隆起,又有新生代构造运动形成的一系列构造圈闭(褶皱)和油气运移通道(断层),在侏罗系和第三系具有多套储盖组合。本区预测油气资源量达 10×108t,而探明油气储量仅为预测量的 3%,具有巨大的勘探潜力。冷湖一号至五号 (冷湖构造带西段 )勘探区带、南八仙—大红沟古隆起勘探区带及赛什腾山前勘探区带是今后柴达木盆地北缘最现实的三大有利勘探区带。Abstract: Lower-Middle fresh lacustrine shale and coalmeasures with huge thickness have been found in the petroleum system of the northern Qaidam basin. These source rocks are characterized by high abundance of organic matter with mainly type Ⅱ-Ⅲ. The major oil and gas generation stage of the Jurassic source rocks is between theMiddle-Late episodes of the HimalayaMovement ( E3 -2N1 ). At that time, the existingMesozoic paleo-up lifts and the Cenozic folds and faults, which served as oilmigration routes and traps, greatly promoted the oil reservoir formation. In addition, multiple reservoir-cap compositions are confirmed in both the Jurassic and Tertiary strata. The estimated reserves of oil and gas are up to 1 billion ton of oil equivalent in the studied area. However, only about 3% of them have been found so far. Great potential for further hydrocarbon exp loration remains in this area. Three p referential targets for future hydrocarbon exp loration are selected, i. e. Lenghu No. 1 to No. 5 Trap, Nanbaxian2Dahonggou paleo up lift and the front of Saishiteng mountain
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Key words:
- petroleum system /
- hydrocarbon exploration /
- northern Qaidam basin
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[1] 1 徐凤银,彭德华,侯恩科. 柴达木盆地油气聚集规律及勘探前景[J].石油学报,2003,(04):1-6.
2 翟光明,徐凤银,李建青. 重新认识柴达木盆地力争油气勘探获得新突破[J].石油学报,1997,(02):1-7.
3 曾联波,金之钧,张明利. 柴达木侏罗纪盆地性质及其演化特征[J].沉积学报,2002,(02):288-292.
4 王明儒,胡文义,彭德华. 柴达木盆地北缘侏罗系油气前景[J].石油勘探与开发,1997,(05):20-24.
5 段毅,彭德华,张晓宝. 柴达木盆地原油碳同位素的主控因素与成因类型[J].沉积学报,2003,(02):355-359.
6 于会娟,妥进才,刘洛夫. 柴达木盆地东部地区侏罗系烃源岩地球化学特征及生烃潜力评价[J].沉积学报,2000,(01):132-138.
7 穆剑,汪立群. 论柴达木盆地冷湖-南八仙构造带的含油气远景[J].石油学报,1999,(02):18-22.
8 周建勋,徐凤银,胡勇. 柴达木盆地北缘中、新生代构造变形及其对油气成藏的控制[J].石油学报,2003,(01):19-24.
9 文志刚,王正允,何幼斌. 柴达木盆地北缘上石炭统烃源岩评价[J].天然气地球科学,2004,(02):125-127.
10 洪峰,宋岩,余辉龙. 柴达木盆地北缘典型构造断层封闭性与天然气成藏[J].石油学报,2002,(02):11-15.
11 陈建平,黄第藩,陈建军. 酒东盆地油气生成与运移[M].北京:石油工业出版社,1996.
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