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Analysis of Aquathermal Pressuring Based on Equation of Liquid State

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Abstract:

Mechanisms of overpressure generation is key issue for fluid dynamics and hydrocarbon accumulation in sedimentary basin exploration. The contribution of aquathermal pressuring to overpressure generation is always focus problem. The equation of liquid state would describe internal relations of temperature, pressure and volume of pore fluid in thermodynamic system. The contribution ratio of overpressure generation by auqathermal pressuring and undercompaction based on equation of liquid state would obtain quantitative assessment of these two geological processes leading to generation of overpressure. The contribution ratio was expressed by function of formation porosity and temperature. The mechanism of overpressure generation of well ST36-1-1 was studied by this method, which developed overpressure in Qiongdongnan basin of northern South China Sea, research shows that contribution of overpressure generation from auqathermal pressuring is treble of undercompaction, and with increasing of formation porosity, contribution of auqathermal pressuring would increases gradually comparing with undercompaction

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Periodical:

Advanced Materials Research (Volumes 361-363)

Pages:

76-79

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.361-363.76

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Online since:

October 2011

Authors:

Zhi Feng Guo, Zhen Liu, Da Zhi Fang, Lu Lin, Jie Chen

Keywords:

Aquathermal Pressuring, Equation of Liquid State, Undercompaction

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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