岩石热导率的测量及对油区地热研究的影响

Measurement of thermal conductivity of rock and its influence on geothermal research in oil region

岩石热导率是地下地温场研究的关键参数,测量岩石热导率是常规油气、非常规油气、地热资源地下资源勘探中非常重要的基础性工作。目前热导率的测量方式分为实验室测量和原地测量2种方式。测量热导率的扫描仪所采用的光学扫描高精度测试方法,是由莫斯科国立地质勘探院的尤里·波波夫教授研制而成,这项技术在地球科学和热物理学上都是最新的,其工作原理是用一个由红外温度传感器控制的热激器产生聚焦的、可移动且可持续工作的热源来扫描样品表面。本次测量首次利用TCS热导率测量仪对油区的岩石的热导率参数进行了测量,一共采集了油区10块岩心的热导率数据,热导率数值为0.904~2.024 W/(m·℃),由此来得到相关数据为以后的油区地热资源研究提供基础资料。

Thermal conductivity of rock is a key parameter in the study of underground geothermal field.Measuring thermal conductivity of rock is a very important basic work in the exploration of conventional oil,gas,unconventional oil and gas,geothermal resources and underground resources.At present,the measurement methods of thermal conductivity are divided into two ways: Laboratory measurement and In-situ measurement.The high-precision optical scanning method used to measure the thermal conductivity of the thermal conductivity scanner was developed by Professor Yuri Bobov of the National Geological Survey Institute of Moscow.This technology is the latest in Earth Science and thermal physics,it works by using a thermostat controlled by an infrared temperature sensor to generate a focused,moveable and sustainable source of heat to scan the surface of the sample.In this measurement,the thermal conductivity parameters of the rock in the oil zone were measured by the TCS thermal conductivity meter for the first time.The thermal conductivity data of the 10 cores in the oil zone were collected from the range of 0.904 W/(m·℃) to 2.024 W/(m·℃),so as to obtain the relevant data for the future oil field geothermal resources to provide basic information.