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.
Highlights
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
The Yinggehai Basin is a quick settlement of Cenozoic sedimentary basin; abnormal high temperature high pressure is one of its important characteristics [1]-[3]
The Yinggehai Basin is a quick settlement of Cenozoic sedimentary basin, abnormal high temperature high pressure is one of its important characteristics
Summary
The Yinggehai Basin is a quick settlement of Cenozoic sedimentary basin; abnormal high temperature high pressure is one of its important characteristics [1]-[3]. The overpressure interface of basin central diapir. (2015) High-Temperature Overpressure Basin Reservoir and Pressure Prediction Model. The Yinggehai Basin is a quick settlement of Cenozoic sedimentary basin, abnormal high temperature high pressure is one of its important characteristics. The overpressure interface of basin central diapir zone is shallow, but different diapir structure still have different overpressure interface. The large-scale and medium gas fields have been found by foreign petroleum company, which indicated that overpressure has close relationship with oil-gas generation, migration, reservoir and distribution. With the development of oil and gas exploration research, especially of the overpressure and its growth mechanism, the relationship of overpressure and hydrocarbon reservoir, overpressure has been paid more attention in oil-gas exploration and development
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