288断块砾岩油藏注水过程中储层损害机理研究  

Study on Formation Damage Mechanism of Fault Block 288 of Conglomerate Reservoir in Waterflooding

作　　者：王自力[1] 唐洪明[1] 孟祥燕[2] 王春华[1] 白蓉[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]新疆油田分公司采油二厂,新疆克拉玛依834008

出　　处：《断块油气田》2007年第1期38-40,共3页Fault-Block Oil & Gas Field

摘　　要：288断块油藏为低孔低渗油藏,储层物性差,注水开发过程中出现注水压力升高快、吸水量下降的现象。综合利用储层岩矿分析、岩石物性测定、敏感性实验评价方法,分析了288断块吸水层储层损害机理。研究表明,288断块油藏储层的水敏性、速敏性和低渗透性是储层受损的内在因素,回注污水中硫酸还原菌严重超标、回注污水矿化度太低以及工作制度不合理是外在因素。针对性提出了预防注水井储层损害的措施和手段,提高注水井的吸水能力,保证油田正常注水。The fault block 288 belongs to the reservoir with low porosity,low permeability and poor physical property.Some wells had the phenomenon that much water was injected and more difficulties were found in the process of waterflooding With the use of many mature techniquse such as reservoir rock analyses,physical property detection and sensibility experimental evaluation,the main reservoir damage factors of fault block 288 were studied.The results show that water sesitivity,velocity sensitivity and low permeability of the formation in fault block 288 are the internal factors damaging formation.The serious superscale bacterium in injection well,low salinity in injected water and unreasonable salinity are the exterior factors.For the purpose of solving the problem,prevention measures techniques are developed for improving the water absorbing ability in heavy water sensitivity reservoirs,the absorption ability to the injectors can be raised for ensuring the stable water injection in the oilfield.

关 键 词：288断块 速敏 水敏 应力敏感 储层损害 黑云母水化 注水井 黏土防膨剂 

分 类 号：TE347[石油与天然气工程—油气田开发工程]