The research and application of movable gel flooding technology in horizontal well pattern of Lu 36 block

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Suzhen, Guo^1 ; Rui, Wang^1 ; Deqiang, Liu^2 ; Jun, Wang^3 ; Shanshan, Gao^1 ; Ping, Li^4 ; Zhiqiang, Wang^1 ; Lei, Shi^1

Engineering Technology Research Institute, Huabei Oilfield Company of PetroChina, Renqiu, He Bei Province

062552, China^1

Quality Safety Environmental Department, Huabei Oilfield Company of PetroChina, Renqiu, He Bei Province

062552, China^2

Underground Gas Store Management Agency of Huabei Oilfield Company of PetroChina, Lang Fang, He Bei Province

065000, China^3

Third Exploitation, Huabei Oilfield Company of PetroChina, He Jian, He Bei Province

062450, China^4

关键词: Effective rates;    Flooding agent;    Huabei oilfield;    Research and application;    Reservoir description;    Reservoir heterogeneity;    Strong stability;    Vertical wells;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/3/032043/pdf
DOI  :  10.1088/1755-1315/153/3/032043

来源: IOP

【 摘 要 】

Lu 36 block in Huabei oilfield uses vertical well to inject and horizontal well to produce. The reservoir heterogeneity of this block is strong and watercut is rising fast. The drilling in reservoirs of horizontal well pattern is long, so it is difficult to find water and shut off water, increasing the difficulty to adjust and develop. To explore an effective way to develop the remaining oil of the horizontal well reservoir in later stage of production. Through analyzing, the movable gel flooding can effectively improve interlayer contradictions, expand swept volume in the plane and innerlayer in Lu 36 block. The gel adaptable in horizontal well pattern is large doses, moderate strength and strong stability. Injecting on the single well can lead to the channeling or streaming. Through detailed reservoir description, the reserves are recalculated. The displacement system and parameters are further optimized. 4 wells in Lu 36 block has carried out the overall displacement. 51,264 m3 of flooding agent were injected and the effective rate of corresponding oil wells is 100%. The oil production increased from 5.3 tons to 18.1 tons per day, water cut decreased from 95.43% to 83.18%. The peak of the growing oil is 12.8 tons per day and the valid is 36 months. The cumulative increased oil is 7,965 tons.