TITLE:
Three-Dimensional Pressure Modeling of South China Sea in High Temperature High Pressure Field
AUTHORS:
Aiqun Liu, Peiyuan Zhu, Guangchao Pan, Caiwei Fan, Bing Liu, Yunpeng Wu
KEYWORDS:
High Temperature and High Pressure Basin, Sedimentary Facies Model, Seismic Attribute Model, Lithology Model, Three-Dimensional Pressure Model, Pressure Prediction
JOURNAL NAME:
Open Journal of Marine Science,
Vol.7 No.2,
April
20,
2017
ABSTRACT: Yingqiong basin is a proven hydrocarbon-rich basin in South China Sea. There are a number of large exploration prospects in high temperature and over-pressured formations, especially in Yacheng Block of Qiongdongnan basin and Dongfang District of Yinggehai Basin. Owing to good exploration situation, we have already achieved proven geological reserves over 1000 × 108 m3. In recent years, a few drilled HPHT wells have confirmed that pressure predicted by conventional method was wildly inaccurate. From the view of regional stress, the accuracy of the pressure prediction will be substantially improved. Accurate pressure prediction and three-dimensional pressure modeling which are based on three-dimensional lithology modeling are the cornerstone to achieve exploration breakthrough. In this paper, the use of the triple constraint trend lithology model broke through the traditional method of seismic lithology prediction only by means of impedance threshold value. Compared with actual data and prediction, it confirms that three-dimensional pressure modeling method is reasonable and effective, and has a wide prospect of application.