Terms, Abbreviations and Acronyms by X

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XMAC-E  XMAC Elite (Next generation of XMAC)
XMT/XT/HXT  XMas Tree (Christmas Tree, the valve assembly on a production well-head)
XRD X-ray diffraction
XRF X-ray fluorescence
XYC  XY Calliper Log (Halliburton)