As a clean renewable geothermal resource, the hot dry rock has been more and more maturely utilized with obviously increasing values. Located at the junction of three tectonic plates with vast territory, China possesses abundant hot dry rock storage. Based on an analysis of terrestrial heat flow, rock thermal conductivity at different depths, radioactive heat generation and radioactive depth variable constant, the authors estimated the terrestrial temperature at different depths by calculating the measured temperatures from shallow strata to the depth of the crust. Then the hot dry rock resource amount at the depth of 3000–10000 m was estimated by virtue of the volume method. The results show that the resource amount at the depth of 3000–10000 m could reach 2.5×1025 J, which is equivalent to the heat of 860 trillion tons of standard coal. This resource is estimated to be 5,200 times that of the current total energy consumption on the basis of 2% of the exploitable resources amount. The hot dry rock amount at the depth of 3500–7500 m and between the temperature of 150–250℃ is estimated to reach 6.3×106 EJ, which could yield 126000 EJ on the basis of 2% of exploitable resources amount, around 1320 times that of the total energy consumption in 2010, thus demonstrating a promising utilization potential.

干热岩是一种清洁的可再生地热资源, 在过去40年里, 干热岩的利用技术日趋成熟, 显现出了巨大的利用价值。我国陆区面积广阔且地处三大板块交界处, 具有良好的干热岩赋存背景。本文在对我国陆区大地热流、不同深度岩石热导率、岩石生热率以及放射性元素集中层的厚度分析的基础上, 利用根据浅部测温资料向地壳深部外推的方法, 对我国陆区不同深度温度进行了估算, 在此基础上利用体积法对我国陆区3.0～10.0 km深处的干热岩资源量进行了估算, 结果显示, 我国大陆3.0～10.0 km深处干热岩资源总计为2.5×1025 J, 相当于860万亿吨标准煤, 按2%的可开采资源量计算, 相当于我国目前能源消耗总量的5200倍, 其中, 位于深度3.5～7.5 km之间, 温度介于150℃到250℃的干热岩储量巨大, 约为6.3×106 EJ, 按2%的可开采储量计算, 也将获得126000 EJ的热能, 相当于2010年我国能源消费总量的1320倍, 开发利用前景巨大。

In the process of hot dry rock(HDR) geothermal energy development，the first issue to be resolved is deep drilling. According to the geological characteristics of HDR geothermal resources in China，the three key issues during HDR geothermal drilling construction are proposed based on the experimental research，theoretical analysis and numerical simulation. They are drilling surrounding rock stability control technology，rock breaking technology under high temperature and high pressure and drilling fluid technology under high temperature and high pressure. And then，from the main factors of surrounding rock instability in exploitation of HDR geothermal energy，rheological properties of drilling surrounding rock under thermo-mechanical coupling，drilling surrounding rock deformation failure law and the critical failure condition under high temperature and high pressure，the drilling surrounding rock stability control technology during the HDR geothermal deep drilling is proposed. Through the experimental research on rock breaking in granite with three methods which are impact grinding rock breaking，cutting rock breaking，impact-cutting compound breaking rock under high temperature and high pressure and the comparison of the three rock breaking methods under different temperatures，the rock breaking laws of the three methods are obtained under high temperature and high pressure. Finally，from the effect of high temperature on drilling fluid，the general requirement of high temperature treatment for geothermal drilling and the effect of the performance of drilling fluid on wall stability and its countermeasures，the drilling fluid technology requirements of HDR deep drilling are solved. The research on deep drilling technology under high pressure and temperature has important scientific and engineering significance to the human exploration of Earth and the development of deep earth energy and resources.

高温岩体地热开发中首先需要解决的问题是深钻施工。根据中国高温岩体地热资源赋存的地质特征，在试验研究、理论分析和数值模拟的基础上，提出高温岩体地热钻井施工中三大关键技术问题：钻井围岩稳定性控制技术、高温高压破岩技术、高温高压钻井液技术。进而从高温岩体地热开采中钻井围岩失稳的主要因素、热力耦合作用下钻井围岩流变特性、高温高压下钻井围岩变形破坏规律与失稳临界条件，提出高温岩体地热深钻施工中钻井围岩稳定性控制技术。通过对高温高压下花岗岩中冲击破岩、切削破岩、冲击–切削复合破岩的试验研究及不同温度下3种破岩方式的比较，获得高温高压下3种破岩方式的破岩规律。最后从高温对钻井液的影响、地热钻井对高温处理剂的一般要求、钻井液的性能对井壁稳定的影响及应对措施，提出解决高温岩体地热深钻施工的钻井液技术要求。高温高压下深钻施工关键技术的研究，对于人类探索地球、开发地球深部的能源与资源具有重要的科学与工程意义。

摘　要： 为查明共和盆地干热岩资源情况，自2012年以来，青海省在共和恰卜恰地区共施工干热岩钻孔4眼，目前DR3、DR4已完成，GR1、GR2正在施工中。四孔均揭露到干热岩，各孔情况如下：DR3孔于2014年8月25日终孔，孔深2927．2m，1340m处揭露花岗岩，2250m处井内温度150℃，孔底温度183℃以上。DR4孔于2014年8月25日终孔，孔深3102m，

摘　要： 阐述漳州市干热岩地区深孔钻探和综合地热地质勘查的目标和任务,对工作区的概况进行分析,提出计划和工作方案。

技术经济学是研究技术与经济的相互关系、寻求技术与经济最佳结合 的科学。技术经济的主要工作是通过技术经济研究与计算反映技术方案的经济效果，以指导技术方案的选择和技术开发的方向。 本研究将技术经济学的方法引入取心钻进的方案设计和钻进施工管理。在钻探技术的研究与应用领域，存在着许多技术方案的比较和选择问题，诸如套管程序和钻进 施工程序选择、钻进方法选择、钻头选择、钻进施工中涉及钻头使用、起钻的施工决策问题等。对这些问题，都应该开展技术经济研究。但目前，在钻探领域人们还 未充分认识到技术经济学研究的重要性，此方面的研究工作...