摘要
上奥陶统良里塔格组是塔里木盆地塔中地区重要的储集层。根据已钻井资料,对塔中地区上奥陶统良里塔格组岩石地球物理特征进行了研究,结果表明:物性、储层类型对波阻抗影响最大,岩性、流体对波阻抗影响较小;奥陶系碳酸盐岩致密层和小裂缝型储层具有密度大、速度高、波阻抗值大的特点,利用地震常规预测手段较难预测出小裂缝型储层,而塔中地区奥陶系碳酸盐岩大裂缝型、裂缝—孔洞型、孔洞型、洞穴型储层具有密度小、速度低、波阻抗值小的特点,与围岩具有较为明显的差异,在地震上可以产生明显的响应,可利用常规地震资料来预测这种类型储层。该认识对提高有效预测塔中地区奥陶系碳酸盐岩储层的水平,规避勘探风险,具有一定裨益。
Fault Sealing is very important for both hydrocarbon accumulation and injection-production well arrange- ment. 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 scaling. 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.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2009年第1期138-147,共10页
Natural Gas Geoscience
基金
国家重点基础研究发展计划"973"项目(编号:2007CB209604)资助
关键词
塔中Ⅰ号断裂带
碳酸盐岩
地球物理特征
储层预测
Complex faulted block ； Fault sealing ； Pressure prediction； Numerical simulation.
