复杂断块油田断层封闭性判别——以大港油田X断块为例

在复杂断块油田,断层封闭性的研究对于确定油气藏的分布和注采井网综合调整都有着极为重要的意义。以大港油田X断块为例，提出了应用断层附近地层压力的连续性和模拟油井含水率曲线方法研究复杂断块油田断层封闭性。首先利用地震资料，基于模型反演提取地层速度来计算地层压力，如果断层两侧地层压力是连续的，则认为该断层是不封闭的，断层两侧压力不连续，则判断断层是封闭性的。其次是应用数值模拟对断层的封闭性进行识别，给定控制条件（断层封闭性）模拟油井的含水率变化曲线，进行模拟曲线与实际曲线拟合，根据2条曲线的拟合程度判别断层的封堵性。

Diagnostic Method of Fault Sealing in Complex Block Faulted Oilfield:A Case from X Block, Dagang Oilfield

Fault Sealing is very important for both hydrocarbon accumulation and injection\|production well arrangement. The diagnostic method of fault sealing for the complex block flauted oil field in Dagang is presented in this paper. Two methods are used in this example. First, In order to calculate the pressure on either side of the fault, its interval velocity is extracted based on the model inversion from seismic data, and the fault sealing is determined according to the pressure continuance in that formation. Second, numerical simulation is applied to analyze the fault sealing. On the controlled conditions (Fault Sealing), WWCT is simulated, and then to fit with WWCTH in the producction well. The degree of fitting is used to determine fault sealing.