摘要
中国大陆科学钻探测井使用了先进的ECLIPS5700成象测井设备,20多种测井方法,原位获取了钻孔剖面岩石的各种物理化学参数、钻孔几何形态、钻孔几何形态参数和井壁图像。建立了结晶变质岩各种测井物性参数剖面。主要有:三种探测深度不同的电阻率[双侧向(RD、RS)、微球聚焦(RMSF)]、自然电位(SP)、自然伽马(GR)、自然伽马能谱(U、Th、K、SGR、CGR)、岩性密度(DEN,Pe)、中子孔隙度(CNL)、多极阵列声波(Vp、Vs、Vst)、超声成象(CBIL)、微电阻扫描成象(MFI伽马(GR)、自然伽马能谱(U、Th、K、SGR、CGR)、岩性密度(DEN,Pe)、中子孔隙度(CNL)、多极阵列声波(Vp、Vs、Vst)、声成象和微电阻扫描成象(STAR-Ⅱ)、井温(T)、磁化率(MS)、井液电阻率(Rm)、井径(CAL)和井斜(DAZ、DEV)等。测井响应特征分析研究表明,测井响应变化明显,丰富多彩。可根据测井响应分析发现、识别超基性岩、榴辉岩、角闪岩和正、副片麻岩等主要 岩性、分层和恢复岩心缺失井段岩性,研究变质岩源岩和变质环境。包括自然伽马、自然伽马能谱、岩性密度和中子孔隙度(含氢指数)测井的核测井系列在识别和重构变质岩剖面中扮演着举足轻重的角色。科学准确地解决了利用成象测井资料恢复岩心空间位置的难题,国内首次完成了长井段(CCSD-MH孔100-2000米)岩?
Advanced ECLIPS5700 image logging equipment and about 20 well logging methods were used in CCSD-MH hole (0 -2000m) , a. A lot of valuable deep rock information (physical, chemical, geometrical parameters and imagers of the borehole's profile) had been obtained in-situ. Various logging parameter profiles have been built. They include mainly; 3 resistivity curves with different depths of investigation [Deep, Shallow and Micro-Spherically Focused Resistivity (RD,RS, RMSFL)] , Natural Gamma Ray(GR) , Digital Spectrometer[DSL (U,Th,K,SGR,CGR) ] , Litho-Density[ZDL (DEN, Pe)] ,) , Compensated Neutron(CNL) , Multi-pole Array Acoustic ( Vp, Vs, Vst) , Simultaneous Acoustic-Resistivity Imager ( STAR- H ) , Temperature ( T ) , Magnetic Susceptibility (MS) , Mud Resistivity (Rm) , Caliper(CAL) , Inclinometer(DAZ,DEV) , etc. The research and analysis results of the character of logging response of UHP metamorphite indicate that the logging responses vary obviously, are rich and colorful. So with various logging responses we could find, recognize the lithology of main metamorphic rocks ( eclogite, serpentinite, amphibolite, orthogneiss, paragneiss, etc. ) , delaminate beds and restore the lithology profile for the segment without cores. , study the source rocks and metamorphic conditions. The nuclear logging series which includes GR,DSL,ZDL and CNL had acted a key role in litho-identification and metamorphic profile reconstruction work of the pilot hole. The difficult problem of core depth & orientation restoring for a long segment of CCSD-MH (2000m) was solved successfully with image logging data. Various structure parameters (the size and occurrences of foliation, fracture, fault & vein) have been given. The property of seismic reflectors, magnitude and direction of ground stress, distributions of geothermal gradient, heat flow and heat generation have been studied also with logging data.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
2004年第1期165-178,共14页
Acta Petrologica Sinica
基金
国家重点基础研究发展规划项目(编号:2003CB716500)
国家重大科学工程项目"中国大陆科学钻探工程"
国家自然科学基金重大项目(编号40399140)
科技部基础研究重大项目前期研究专项:中国大陆科学钻探工程科学研究(编号:2001CCB00900)
国土资源部科技项目:中国大
