摘要
地热资源勘查时,通过地热井钻探最终才能查明地热田的地层结构,地热增温率,热储的埋藏深度、岩性、厚度与分布,地热流体温度、压力和化学组分,并通过地热井产能测试初步了解热储的渗透性、地热流体储量、温度等。在地热钻探过程中,成井阶段工作是否有效会直接决定地热井是否成井,从而影响成井质量,影响整个地热勘查成果。成井阶段中多数工作方案需要参照地球物理测井解译成果设计,运用多元统计回归分析方法研究地热井钻探过程中温度测井成果,总结温度测井成果与地热增温率、地热井各井段岩性及富水性、主要富水段等之间的相关性。该相关性能指导更多的地热资源勘查及地热井钻探施工工作,提高成井质量,丰富勘查成果。
During the geothermal resource exploration, the stratum structure of the geothermal field, geothermal temperature increasing rate, buried depth, lithology, thickness and distribution of the geothermal reservoir, temperature, pressure and chemical composition of geothermal fluid can be found out finally through the drilling of geothermal well. The permeability, reserves and temperature of geothermal fluid can be known preliminarily though geothermal productivity test. In the process of geothermal drilling, whether the well completion stage work is effective or not will directly determine whether the geothermal well is completed, thus affecting the well completion effect and the whole geothermal exploration results. In the well completion stage,most of the work programs need to be designed with reference to the geophysical logging interpretation results. Multivariate statistical regression analysis method is used to study the temperature logging results in the progress of geothermal well drilling,and summarize the correlation between the temperature logging results and geothermal warming rate, lithology and water abundance of each section of geothermal well, and the main water-rich section. The relevant performance guides more geothermal resource exploration and geothermal well drilling construction work, improves the quality of well completion, and enriches the exploration results.
作者
蔡回炜
CAI Huiwei(Guizhou Zhengye Water Conservancy and Hydropower Survey and Design Co.,Ltd.,Guiyang 550000,Guizhou,China)
出处
《能源与节能》
2022年第6期163-168,共6页
Energy and Energy Conservation
关键词
成井阶段
温度测井
回归分析
地热增温率
completion stage
temperature logging
regression analysis
geothermal heating rate
