Unconventional oil-gas accumulation conditions and exploration potentials in Hexi Corridor and its adjacent areas

被引：0

作者：

Wei H. ^{[1
]}

Zhu Z. ^{[1
]}

Wei D. ^{[1
]}

Li Y. ^{[1
]}

He H. ^{[1
]}

Yang Y. ^{[1
]}

Li H. ^{[1
]}

Ren X. ^{[1
]}

机构：

[1] Research Institute of Petorleum Exploration and Development, PetroCliina Yumen Oil field Company, Gansu, Jiuquan

来源：

Shiyou Xuebao/Acta Petrolei Sinica | 2023年 / 44卷 / 12期

关键词：

accumulation conditions; Hexi Corridor and its adjacent areas; resource potential; shale oil; tight sandstone gas; unconventional oil-gas;

D O I：

10.7623/syxb202312014

中图分类号：

学科分类号：

摘要：

The sedimentary basins in Hexi Corridor and its adjacent areas have been explored as the prospecting areas of Yumen oilfield. In the complex process of exploration, seven oil fields, including Laojunmiao, Qmgxi. and Jiudong, have been discovered in Jiuquan Basin. However, no substantial breakthroughs have been made in peripheral basins. In recent years, a comprehensive geological evaluation has been performed on the oil-gas resources of sedimentary basins in Hexi Corridor and its adjacent areas. It is judged that the study area has certain exploration potential for unconventional oil and gas. dominated by shale oil and tight sandstone gas. Shale oil resources are mainly distributed in the Qmgxi sag and Huahai sag of Jiuquan Basin, as well as Xiaohu subsag and Suo- tuo subsag of Yabulai Basin. Tight sandstone gas resources are mainly detected in Wuwei Basin, Mmle Basin and South Qilian Basin. The total scale of shale oil resources in Qmgxi sag are estimated as being over 100 million tons. Currently, the exploratory wells like Liuye 1 H have been deployed, marking the beginning of shale oil exploration in Jiuquan Basin. Huahai sag. Xiaohu subsag, and Suo- tuo subsag all possess geological conditions favorable for shale oil accumulation, and the shale oil geological resources evaluated during the 13th Five-Year Plan period is about 0. 6 × 108 t, 1. 5 × 108 t and 0. 2 × 108 t. respectively. The exploration level of Wuwei Basin. South Qilian Basin, and Mmle Basin is relatively low. The comprehensive geological evaluation suggests that these basins have good exploration prospects for tight sandstone gas. and further evaluation of unconventional oil and gas exploration is needed to determine the resource scale and exploration potential. © 2023 Science Press. All rights reserved.

引用

页码：2231 / 2249

页数：18

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