Determination of reasonable water injection timing for complex fault block high saturation reservoir - A case study of C30 fault block in Chaheji oilfield

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Wang, Xia^1 ; Wu, Cong^1 ; Hu, Qihao^1 ; Zhang, Fan^1 ; Wang, Xinying^1 ; Shan, Xiaokun^1

Exploration and Development Research Institute of Petrochina Huabei Oilfield Company, Renqiu City, Hebei Province, China^1

关键词: Calculation results;    Complex fault block;    Determination methods;    Injection timing;    Material balance method;    Quasi-steady state;    Reservoir pressures;    Saturation pressure;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/6/062079/pdf
DOI  :  10.1088/1755-1315/153/6/062079

来源: IOP

【 摘 要 】

High saturation reservoir has the characteristics of high gas-oil ratio, high saturation pressure and low difference between reservoir pressure and saturation pressure. In the process of development, the oil layer is very easy to degas due to the lag of water injection, which affects the production of oil well. Therefore, it is necessary to determine reasonable water injection timing and timely water injection to ensure the efficient development of high saturation reservoir. Based on the characteristics of complex fault block high saturation reservoir, the reasonable water injection timing of high saturation reservoir is determined by means of the combination of the finite layer quasi-steady state well test method and the material balance method. Through the actual production data verification, the calculation results of two methods are approximate, and the accuracy is high enough to meet the production need. The determination method is suitable for the reasonable injection timing of high saturation reservoir.