论文部分内容阅读
钻井公司大量使用金刚石复合片(PDC:Polycrystalline Diamond Compact)钻头破坏了钻井岩屑的结构,导致无法通过肉眼或显微镜等常规方法观察和分析钻井岩屑样品。哈里伯顿公司为井场化学地层学技术服务开发了一种便携式能量色散型X光荧光光谱仪(ED-XRF:Energy Dispersive X-Ray Fluorescence)对钻井岩屑进行地球化学元素分析。该设备在钻井现场准确测量包括11种地层元素Al、Si、Fe、Ti、Mg、Mn、Na、Ca、K、P、S以及Cl、Cr、Mo、Nb、Rb、Sr、Th、U、Y、Zn和Zr等示踪元素。该公司还开发了相应的转换方法将便携式ED-XRF的元素测量数据转换成岩石样品的矿物组分,转换后的数据与实验室全尺寸岩心X光衍射仪(XRD:X-Ray Diffraction)测量结果具有较好的对比性。沙特阿莫科公司与哈里伯顿公司合作开展了便携式ED-XRF的现场应用试验,并将相同样品的试验结果与先进
Drilling companies have extensively used PDC (PDC: Polycrystalline Diamond Compact) drill bits to disrupt the structure of drill cuttings, resulting in the inability to view and analyze drill cuttings samples by conventional methods such as macroscopic or microscopic. Halliburton has developed a portable energy dispersive x-ray fluorescence spectrometer (ED-XRF) for geochemical elemental analysis of drilling cuttings for well site chemical stratigraphic technology services. The equipment accurately measures 11 kinds of formation elements such as Al, Si, Fe, Ti, Mg, Mn, Na, Ca, K, P, S and Cl, Cr, Mo, Nb, Rb, Sr, Th, Y, Zn and Zr trace elements. The company has also developed the appropriate conversion method to convert elemental measurements of portable ED-XRF into mineral fractions of rock samples. The converted data is compared with laboratory full-size X-ray diffraction (XRD) measurements The results have good contrast. Saudi Amoco and Halliburton conducted a field application test of the portable ED-XRF and compared the test results of the same samples with the advanced