摘要
针对四川盆地甘孜地区中高温地热资源区,具有热源勘探程度低,地质构造复杂,断裂发育,地层温度高等特点,在采用地球物理技术对该区地热资源进行勘察的基础上,有必要进一步利用测井资料精细刻画来解决单井井筒的热储位置和品质、热储温度等问题。通过总结热储的测井响应规律,结合交会图法、重叠法和井温异常等多种方法开展热储识别技术研究。在分析热储品质关键因素的基础上,利用孔隙度、破碎带发育厚度和热储温度等因子,建立综合指标直观评价地热井的热储品质,寻找单井的主要出水位置。通过三口井的应用,效果显著。
For the high temperature geothermal resource zone in the Ganzi region of Sichuan basin,with the characteristics of low exploration level,complicate geological structure,fault development and high formation temperature,it is necessary to solve the problems of geothermal reservoir location,quality,temperature of single wellbore by using logging information on the basis of using geophysical techniques to explore geothermal resources.Through summing up the laws of logging response and combining with many methods such as the methods of cross plot,overlapping and temperature anomaly,the paper can do the study in geothermal reservoir identification.On the basis of analyzing key elements about geothermal reservoir,and some factors such as porosity,thickness in fractured zone,geothermal reservoir temperature and so on are used to set up comprehensive indicators which can analyze geothermal reservoir quality of wells,to look for the main water position of sin-gle well.Through the application of three wells,the effect is obvious.
作者
侯克均
Hou Kejun(Well Logging Branch,Southwest Petroleum Engineering Co.Ltd of Sinopec,Chengdu Sichuan 610100,China)
出处
《工程地球物理学报》
2018年第3期308-312,共5页
Chinese Journal of Engineering Geophysics
关键词
甘孜地区
板岩
花岗岩
热储
综合指标
Ganzi area
slate
granite
geothermal reservoir
comprehensive indicator
