疏松砂岩可压性研究  

Study on fracability of unconsolidated sandstone

作　　者：武广瑷 黄杰[2] 蔺小博 袁征[2] 李宗贤 Wu Guang'ai;Huang Jie;Lin Xiaobo;Yuan Zheng;Li Zongxian(CNOOC Research Institute Company Limited,Beijing 100028;Oilfield Production Research Institute of COSL,Tianjin 300459;College of Safety and Ocean Engineering,China University of Petroleum-Beijing Beijing 102249)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]中海油田服务股份有限公司油田生产研究院,天津300459 [3]中国石油大学(北京)安全与海洋工程学院,北京102249

出　　处：《石化技术》2022年第9期135-137,共3页Petrochemical Industry Technology

摘　　要：南海东部储层埋藏浅、胶结疏松,含蜡量大,对地层砂的携带能力强,出砂严重。因此,本文需要对南海东部疏松砂岩储层开展了可压性评价,主要包括裂缝起裂和延伸。本文建立疏松砂岩的起裂排量模型,对疏松砂岩裂缝起裂机理开展了相关研究。研究结果表明,疏松砂岩的起裂排量对水平地应力、地层渗透率、压裂液粘度以及储层厚度等因素的变化较为敏感,这些研究结果可为实际现场施工提供一定的指导意义。The features of reservoirs in the Eastern South China Sea include shallow burial,loose cementation,large wax content,strong sand carrying capacity of formation,and serious sand production. Therefore,the analysis of fracture initiation and propagation of the unconsolidated sandstone reservoir in this area requires a rational fracability evaluation. In this paper,the fracture initiation mechanism of unconsolidated sandstone is studied by establishing a fracture initiation displacement model of unconsolidated sandstone. The results show that the fracture initiation displacement of the unconsolidated sandstone is more sensitive to the changes in factors such as horizontal in-situ stress,formation permeability,fracturing fluid viscosity,and reservoir thickness. These research results can provide some guidance for real field construction.

关 键 词：起裂压力 起裂排量 疏松砂岩 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]