Evolution of deepwater sedimentary environments and its implication for hydrocarbon exploration in Qiongdongnan Basin, northwestern South China Sea
Evolution of deepwater sedimentary environments and its implication for hydrocarbon exploration in Qiongdongnan Basin, northwestern South China Sea
复制标题
南海西北琼东南盆地深水沉积环境演化及其油气勘探意义
DOI：
10.1007/s13131-015-0645-4
复制
发表时间：
2015-04
影响因子：
1.4
通讯作者：
He W.J.
中科院分区：
文献类型：
--
作者：
Wang Z.F.;Jiang T.;Zhang D.J.;Wang Y.H.;Zuo Q.M.;He W.J.
Over the past several years, a number of hydrocarbon reservoirs have been discovered in the deepwater area of Qiongdongnan Basin, northwestern South China Sea. These oil/gas fields demonstrate that the evolution of the deepwater sedimentary environment are controlling the formation and distribution of large-scale clastic reservoirs. Integration between seismic and borehole data were necessary to best clarify the distribution and quality of these deepwater reservoirs. Geochemical and paleobiological evidence from discrete samples was also applied to document specific information regarding the sedimentary environment. Results show that the Qiongdongnan Basin has existed as a thriving marine environment since Oligocene, when several rifting depressions developed throughout the entire Qiongdongnan Basin. Triggered by the faults activities, several distinct provenances supplied the coarse sediments, transporting and depositing them in deep parts of the rifting depressions. A fan delta system then formed nearby the source in the deeper area of these rifting depressions. The sedimentary environment of Qiongdongnan gradiationally became deepwater since early Miocene. Consequently, abundances of sediments were transported from Hainan Island and Southern Uplift, and then sunk into the basin center. The submarine fans revealed by many boreholes in this area verified them as good reservoir. Because the area reached its lowest sea level at late Miocene and the Southern Uplift subsidenced under sea level, not providing any sediment, so that the carbonate mesa and biorhythms characteristic of this area also developed during this period. In the west part of Qiongdongnan Basin, sediments transported from Vietnam increased in response to the Tibetan Uplift. Consequently, a central canyon developed along the center of Qiongdongnan Basin, which has been confirmed by several boreholes as a favorable hydrocarbon reservoir. The clarification of the deepwater sedimentary environment’s evolution is potentially highly beneficial to future hydrocarbon exploration in the deepwater area of Qiongdongnan Basin.
登录
查看更多内容
影响因子：
1.4
作者：
T. Jiang;Xinong Xie;Zhenfeng Wang;Xusheng Li;Yingzhao Zhang;Hui Sun
通讯作者：
T. Jiang;Xinong Xie;Zhenfeng Wang;Xusheng Li;Yingzhao Zhang;Hui Sun
南海西北部莺歌海盆地和琼东南盆地上中新统沉积物源：来自稀土元素、重矿物和锆石U-Pb年龄的证据
影响因子：
2.9
作者：
Cao, Licheng;Jiang, Tao;Sun, Hui
通讯作者：
Sun, Hui
影响因子：
3.5
作者：
Liu, Zhifei;Colin, Christophe;Trentesaux, Alain
通讯作者：
Trentesaux, Alain
影响因子：
3.5
作者：
Percy P. H. Chen;Zhi Chen;Qi Zhang
通讯作者：
Percy P. H. Chen;Zhi Chen;Qi Zhang
影响因子：
4.2
作者：
Hutchison, CS
通讯作者：
Hutchison, CS