GRY-1型超高温干热岩地层钻孔测斜仪研制及应用  

Development and Application of GRY-1 Borehole Inclinometer for Ultra-high Temperature Hot Dry Rock Drilling

作　　者：周策[1] 罗光强[1] 李元灵 谭现锋 

机构地区：[1]中国地质科学院探矿工艺研究所,四川成都610081 [2]山东省鲁北地质工程勘察院,山东德州253072

出　　处：《探矿工程（岩土钻掘工程）》2017年第4期44-48,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：国家重大科学仪器设备开发专项"超高温钻孔轨迹测量仪开发和应用"(编号:2013YQ050791);中国地质调查局地质调查项目"干热岩高温钻探器具及工艺研究"子课题"干热岩地层钻孔测斜技术的研究"(编号:201411094-03)

摘　　要：干热岩地层钻孔测斜技术是干热岩勘探和开发不可缺少的关键技术,然而现阶段地勘钻孔测斜技术已不能满足干热岩地层的钻孔测斜要求。其中孔底的高温高压是核心问题。为此,设计承压探管加无磁保温瓶的双层外管结构,采用先进的硬磁校准方法、选用耐高温元件、采用低功耗电路设计,研制了GRY-1型干热岩地层钻孔测斜仪,以满足高达280℃高温、孔深3000 m的超高温干热岩地层钻孔轨迹测量的要求。通过试验应用,证明其在干热岩地层中具有良好的适用性,可助力干热岩资源的勘探和开发。Drilling-hole trajectory measurement is an indispensable technology of the exploration and development of HDR. However, this technology at present stage cannot meet the requirements of inclination measurement in HDR strata. High temperature and high pressure at the hole bottom is the key problem. For this reason, by the double-layer outer tube structure design with the pressure-bearing probe tube and non magnetic thermos bottle, the use of the advanced hard magnetic calibration, the selection of high temperature resistance elements and low-power circuit design, GRY-1 inclinometer is developed to meet the requirements of the drilling-hole in HDR strata at the temperature up to 280℃ and depth of 3000 meters. The practical results show that GRY-1 inclinometer has good applicability in HDR strata and can contribute to the exploration and development of HDR resources.

关 键 词：干热岩 高温高压 钻孔轨迹测量 测斜仪 磁阻传感器 加速度计 

分 类 号：P634.3[天文地球—地质矿产勘探] TE242.9[天文地球—地质学]