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DOI | 10.1306/0816191615717370 |
Preservation of lateral pressure disequilibrium during the uplift of shale reservoirs | |
Xia, Xinyu1,2; Michael, Eric3; Gao, Yongli1 | |
2020-04-15 | |
发表期刊 | AAPG BULLETIN |
ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2020 |
卷号 | 104期号:4页码:825-843 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A pressure gradient increase from normal pressure in oil zones to overpressure in dry gas zones indicates a lateral disequilibrium of pore pressure in many shale reservoirs. In this work, conditions for the preservation of the lateral pressure disequilibrium during uplift and erosion are investigated. Numerical simulations were conducted by coupling pressure-volume-temperature (PVT) and fluid dynamic calculations. Results show that temperature decrease and pore volume expansion during erosion tends to increase the pressure gradient in the gas or condensate zone and tends to decrease the pressure gradient in the black oil zone; therefore, the PVT effect tends to enhance lateral pressure disequilibrium during erosion. Low permeability is crucial for the preservation of the lateral pressure disequilibrium. The persistence of disequilibrium over geological time (tens of millions of years) requires extremely small vertical permeability (sub-picodarcy range) and horizontal permeability (10 nd or even lower). The horizontal permeability is 10-100 times smaller than laboratory measurements on shale plugs, indicating a discontinuity of laminations and fractures within a shale formation. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000526969200004 |
WOS关键词 | PRIMARY MIGRATION ; PETROLEUM SYSTEM ; GAS ; PERMEABILITY ; MODEL ; ROCKS ; BASIN ; OVERPRESSURE ; MATURATION ; BARNETT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/248728 |
专题 | 地球科学 |
作者单位 | 1.Univ Texas San Antonio, Dept Geol Sci, Ctr Water Res, San Antonio, TX 78249 USA; 2.Apache Corp, San Antonio, TX 78257 USA; 3.Conocophillips Co, Houston, TX USA |
推荐引用方式 GB/T 7714 | Xia, Xinyu,Michael, Eric,Gao, Yongli. Preservation of lateral pressure disequilibrium during the uplift of shale reservoirs[J]. AAPG BULLETIN,2020,104(4):825-843. |
APA | Xia, Xinyu,Michael, Eric,&Gao, Yongli.(2020).Preservation of lateral pressure disequilibrium during the uplift of shale reservoirs.AAPG BULLETIN,104(4),825-843. |
MLA | Xia, Xinyu,et al."Preservation of lateral pressure disequilibrium during the uplift of shale reservoirs".AAPG BULLETIN 104.4(2020):825-843. |
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