Evolution of continental formation pressure in the middle part of the Western Sichuan Depression and its significance on hydrocarbon accumulation
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TLDR
Based on the distribution features of present formation pressure, analysis on logging data, and genetic mechanisms of abnormal pressure, the overpressure evolution was reconstructed using numerical basin simulation and other quantitative analysis methods.About:
This article is published in Petroleum Exploration and Development.The article was published on 2012-08-01 and is currently open access. It has received 23 citations till now. The article focuses on the topics: Overpressure.read more
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Overpressure compartments in the central paleo-uplift, Sichuan Basin, southwest China
TL;DR: In this paper, a pore pressure evolution model for the Sichuan Basin was constructed, which is characterized by roughly normal pressure before 200 Ma, overpressuring from 200 to 90 Ma, and overpressure releasing since 90 Ma.
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Quantitative analysis of the Mesozoic abnormal low pressure in Ordos Basin
Shixiang Li,Shixiang Li,Zejin Shi,Xianyang Liu,Xianyang Liu,Shiyu Yang,Xiuqin Deng,Guanglin Liu,Jihong Li +8 more
TL;DR: In this paper, the authors quantitatively analyzed the formation mechanisms of abnormally low pressure from several aspects, such as tectonic uplift, stratum temperature decrease and dissolution-increased porosity.
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Tracing natural gas migration by integrating organic and inorganic geochemical data: A case study of the Jurassic gas fields in western Sichuan Basin, SW China
TL;DR: Based on the integrated geochemical and isotopic analysis of natural gases, formation waters, authigenic minerals, and fluid inclusions, a set of organic and inorganic geochemical tracing parameters, including methane/ethane ratio (C1/C2), N2 content, arene/alkane ratio, carbon isotope of methane (δ13C1), total dissolved solids (TDS), and chemistry of formation water, oxygen and carbon isotopic composition of authigic calcite cement (η18Ocalcite and δ13c calc
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Diagenesis and its impact on the reservoir quality of the fourth member of Xujiahe Formation, Western Sichuan Depression, China
TL;DR: The fourth member of the Xujiahe Formation (T3x4) in the Western Sichuan Depression is typical of the tight gas sandstones of China as discussed by the authors.
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In-situ stresses, abnormal pore pressures and their impacts on the Triassic Xujiahe reservoirs in tectonically active western Sichuan basin
TL;DR: In this article, the authors used the sonic or seismic transit time to predict pore pressure in the Xujiahe gas-bearing formations in the western Sichuan basin.
References
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Mechanisms for Generating Overpressure in Sedimentary Basins: A Reevaluation
TL;DR: Osborne et al. as discussed by the authors investigated the potential for generating overpressure by hydrocarbon generation and cracking and concluded that these processes may be self-limiting in a sealed system because buildup of pressure could inhibit further organic metamorphism.
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Generation and Migration of Petroleum from Abnormally Pressured Fluid Compartments: Reply
TL;DR: The concept of episodic dewatering of deep-basin fluid compartments needs to be considered n any basin-modeling program where the bulk of the oil generation occurs in the compartmented overpressured section of the basin and the oil moves vertically into the normally pressured rocks above as mentioned in this paper.
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Mechanisms for Generating Overpressure in Sedimentary Basins: A Reevaluation: Discussion
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Oil and Gas Developments in Western Canada in 1989
TL;DR: There were 5513 wells drilled in western Canada during 1989, 30% fewer than in 1988 as mentioned in this paper, for an average well depth of 1172 m. The industry continued to acquire more acreage for less total bonus at provincial Crown sales throughout western Canada, and 3,564,827 ha were acquired for a total bonus of $484,872,000.
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Microfracturing in the Upper Triassic Sichuan Basin tight-gas sandstones: Tectonic, overpressure, and diagenetic origins
TL;DR: In this paper, microfractures reflect tectonic, overpressure, and diagenetic origins in the upper Triassic Xujiahe Formation in the western Sichuan Basin.