Major influencing factors of water flooding in abnormally high-pressure carbonate reservoir

International Conference on Energy Engineering and Environmental Protection 2016

能源学;生态环境科学

Qingying, Hou^1,2 ; Kaiyuan, Chen^1 ; Zifei, Fan^2 ; Libing, Fu^2 ; Yefei, Chen^2

School of Energy Resources, China University of Geosciences, Beijing

100083, China^1

Research Institute of Petroleum Exploration and Development, PetroChina, Beijing

100083, China^2

关键词: Abnormal high pressure;    Carbonate reservoir;    Formation pressure;    Pressure coefficients;    Pressure differences;    Sandstone reservoirs;    Saturation pressure;    Water-flooding development;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/52/1/012064/pdf
DOI  :  10.1088/1742-6596/52/1/012064

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The higher pressure coefficient is the major characteristics of the abnormal high pressure carbonate reservoirs, which the pressure coefficient generally exceeds 1.2 and the initial formation pressure is higher than normal sandstone reservoirs. Due to the large pressure difference between initial formation and saturated pressure, oil wells are capable to production with high flow rate by the natural energy at early production stage. When the formation pressure drops to the saturation pressure, the water or gas is usually injected to stabilize the well productivity and sustain the formation pressure. Based on the characteristics of Kenkiak oilfield, a typical abnormal high pressure carbonate reservoir, a well group model is designed to simulate and analyze the influence factors on water flooding. The conclusion is that permeability, interlayer difference and reserve abundance are the main three factors on the water flooding development in these reservoirs.