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| 西藏羌塘盆地中生界烃源岩探讨 | |
| 引用本文： | 伍新和,王成善,伊海生,刘桂凤.西藏羌塘盆地中生界烃源岩探讨[J].西北地质,2005,38(4):78-85. |
| 作者姓名： | 伍新和 王成善 伊海生 刘桂凤 |
| 作者单位： | 1. 中国石化石油勘探开发研究院,北京,100083 2. 中国地质大学,北京,100083 3. 成都理工大学,四川,成都,610059 4. 中石油新疆油田分公司勘探开发研究院,新疆,克拉玛依,834000 |
| 基金项目： | 青藏高原形成演化及其环境资源效应（G199804800） |
| 摘 要： | 羌塘盆地位于青藏高原中北部全球油气产量最高、储量最丰的特提斯构造域中段，是一复合对称型前陆盆地，具有广泛的中生界海相沉积和中国最年轻的海相地层，沉积厚度可达万米，其中侏罗系占一半以上。盆地经历了晚古生代大陆边缘沉积阶段、三叠纪陆间裂谷阶段、侏罗纪大陆边缘沉积阶段和侏罗纪末班公湖—怒江缝合带闭合以来的构造反转挤压一长期剥蚀阶段。羌塘盆地中生代具有广泛分布且发育良好的烃源岩，烃源岩厚度大，最厚处可达3000m以上，其中上三叠统的肖茶卡组、中侏罗统布曲组和夏里组有机质类型好，丰度高，成熟度从成熟到过成熟均有分布。埋藏较好，其生油量巨大，是盆地油气的主要来源之一。 |
| 关 键 词： | 羌塘盆地 中生界 烃源岩 有机质 油气 |
| 文章编号： | 1009-6248(2005)04-0078-08 |
| 收稿时间： | 2005-09-15 |
| 修稿时间： | 2005年9月15日 |
Discussion on Mesozoic source rock of Qiangtang basin in Tibet |
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| WU Xin-he,WANG Cheng-shan,YI Hai-sheng,LIU Gui-feng.Discussion on Mesozoic source rock of Qiangtang basin in Tibet[J].Northwestern Geology,2005,38(4):78-85. | |
| Authors: | WU Xin-he WANG Cheng-shan YI Hai-sheng LIU Gui-feng |
| Institution: | 1. Exploration and Production Research Institute, SINOPEC, Beijing 100083, China;2. China University of Geociences, Beijing 100083, China; 3. Chengdu University of Technology, Chengdu 610059, China ; 4. Petroleum Exploration and development Research Institute, Xinjiang Oil field Company, PetoChina, karamay, Xinjiang 834000, China |
| Abstract: | Qiangtang basin lies in the north and mid of Qinghai-Tibet plateau, which locates in the midsegment in the global Tethys domain with the abundant reservoirs of oil/gas. It is a compound and symmetry foreland basin. It has widespread Mesozoic marine deposition and the latest marine strata were developed in China. The thickness of marine strata is ten thousands kilometers, half of it is Jurassic strata. The basin underwent 4 major sedimentary stage, the late Paleozoic continental margin stage, the Triassic inter-continental rift valley stage, the Jurassic continental margin sedimentary stage finally, tectonic squeeze-erosion stage since Bangong-Nujiang suture closed at the end of Jurassic. Mesozoic Qiangtang basin has widespread and high quality source rocks. The thickness of source rocks is huge; the most thick can be up to 3 kilometers. The organic matter type of source rocks is perfect and its abundance is large. The organic matter maturity varieties from mature to overmature in Xiaochaka formation of upper Triassic and Buqu formation and Xiali formation of mid-Jurassic. The burial conditions of source rocks is a relative good, and oil production is extremely large. The Mesozoic source rocks are one origin of oil and gas in Qiangtang basin. |
| Keywords: | Qiangtang basins Mesozoic source rock organic matters oil and gas |
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