| 塔里木盆地库车坳陷致密砂岩气藏成因类型 |
| |
| 引用本文： | 李卓,姜振学,庞雄奇,李峰,张宝收.塔里木盆地库车坳陷致密砂岩气藏成因类型[J].地球科学,2013,38(1):156-164. |
| |
| 作者姓名： | 李卓 姜振学 庞雄奇 李峰 张宝收 |
| |
| 作者单位： | 1.中国石油大学油气资源与探测国家重点实验室, 北京 102249 |
| |
| 基金项目： | 国家重点基础研究发展计划“973”项目(No.2011CB201100);国家自然科学基金项目(No.40972088) |
| |
| 摘 要： | 为深化对库车坳陷致密砂岩气藏成因类型的认识, 采集致密砂岩储层岩样, 开展了油气充注史和孔隙度演化史研究.通过流体包裹体岩相学和显微测温厘定了油气充注史, 利用沉积-构造-成岩一体化模型恢复了储层孔隙度演化史, 根据两者的先后关系, 划分了致密砂岩气藏的成因类型.结果表明, 依南2侏罗系气藏存在两期油气充注, 第一期是吉迪克期到康村期(23~12 Ma)的油充注, 第二期是库车期到现今(5~0 Ma)的天然气充注, 储层孔隙度在库车期前(12~8 Ma)降低到12%以下, 形成致密砂岩储层.迪那2古近系天然气藏存在两期油气充注, 第一期是康村期到库车期(12~5 Ma)的油充注, 第二期是库车期到现今(5~0 Ma)的天然气充注, 储层孔隙度在西域期(2~0 Ma)降低到12%以下, 形成致密砂岩储层.综合分析认为, 库车坳陷存在两种成因类型的致密砂岩气藏, 依南2侏罗系气藏致密储层形成之后充注天然气, 成因类型为"致密深盆气藏"; 迪那2气藏古近系致密储层形成之前, 天然气已大量充注, 成因类型为"致密常规气藏".这对深化库车坳陷致密砂岩气勘探与开发有重要意义.
|
| 关 键 词： | 库车坳陷 致密砂岩气藏 成因类型 气藏 石油地质 |
| 收稿时间： | 2012-01-08 |
Genetic Types of the Tight Sandstone Gas Reservoirs in the Kuqa Depression,Tarim Basin,NW China |
| |
| LI Zhuo,JIANG Zhen-xue,PANG Xiong-qi,LI Feng,ZHANG Bao-shou.Genetic Types of the Tight Sandstone Gas Reservoirs in the Kuqa Depression,Tarim Basin,NW China[J].Earth Science-Journal of China University of Geosciences,2013,38(1):156-164. |
| |
| Authors: | LI Zhuo JIANG Zhen-xue PANG Xiong-qi LI Feng ZHANG Bao-shou |
| |
| Institution: | 1.State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum,Beijing 102249,China 2.Basin and Reservoir Research Center,China University of Petroleum,Beijing 102249,China 3.Institute of Exploration and Exploitation Research,Tarim Oil Field Company,Kurla 841000,China |
| |
| Abstract: | To further understand the genetic types of the tight sandstone gas reservoirs in Kuqa depression, the core from tight sandstone gas reservoirs is sampled to carry out the analysis on hydrocarbon charge history and porosity evolution. The hydrocarbon charge history is investigated by analyzing the fluid inclusion petrography, and microther mometry and the porosity evolution is restored by using the model of deposition-structure -diagenesis. Combining with gas-water relationship and distribution of tight sandstone gas reservoirs. There are two charge events in the YN2 Jurassic tight sandstone reservoir, with the one of oil charge during 23-12 Ma, and the other gas charge during 5-0 Ma. The reservoir porosity dropped to less than 12% and became tight during the period of 12-8 Ma. Two charge events have been recorded in the DN2 Paleogene tight sandstone reservoir; the former is oil charge during 23-12 Ma, and the latter is the gas charge during 5-0 Ma. The reservoir porosity dropped to less than 12% during the period of 2-0 Ma and became tight later. Two genetic types of tight sandstone gas reservoirs have been confirmed. The YN2 Jurassic tight sandstone reservoir is of the genetic type of "tight deep basin gas reservoir" with the accumulation process of gas charge after the reservoir tightened and the DN2 Paleogene tight sandstone reservoir is defined as "tight conventional gas reservoir" with the accumulation process of gas charge before the reservoir tightened. This study is of significance for further exploration and exploitation of tight sandstone gas in Kuqa depression. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
| 点击此处可从《地球科学》下载免费的PDF全文 |
|
