TITLE:
High-Temperature Overpressure Basin Reservoir and Pressure Prediction Model
AUTHORS:
Aiqun Liu, Jiaxiong Zhou, Dianyuan Chen, Bentian Ou, Caiwei Fan, Wentuo Li
KEYWORDS:
High-Temperature Overpressure, Yinggehai Basin, Pressure Prediction Model, Reservoir Theory
JOURNAL NAME:
Open Journal of Marine Science,
Vol.5 No.3,
June
24,
2015
ABSTRACT: Yinggehai Basin locates in
the northern South China Sea. Since the Cainozoic Era, crust has several strong
tension: the basin subsides quickly, the deposition is thick, and the crust is
thin. In the central basin, formation pressure coefficient is up to 2.1;
Yinggehai Basin is a fomous high-temperature overpressure
basin.YinggehaiBasin’s in-depth, especially high-temperature overpressure
stratum has numerous large-scale exploration goals. As a result of
high-temperature overpressure basin’s perplexing geological conditions and
geophysical analysis technical limitations, this field of gas exploration can’t
be carried out effectively, which affects the process of gas exploration
seriously. A pressure prediction model of the high-temperature overpressure
basin in different structural positions is summed up by pressure forecast
pattern research in recent years, which can be applied to target wells
pre-drilling pressure prediction and post drilling pressure analysis of
Yinggehai Basin. The model has small erroneous and high rate of accuracy. The
Yinggehai Basin A well drilling is successful in 2010, and gas is discovered in
high-temperature overpressure stratum, which proved that reservoir can be found
in high-temperature overpressure stratum. It is a great theoretical
breakthrough of reservoir knowledge.