X-ray Mineral Services Ltd
1 Claughton Rd
Tel: +44 (0)1492 535250
A knowledge of the detailed mineralogy of hydrocarbon-bearing rocks is essential in the interpretation of reservoir formations for petroleum exploration and production. One of the key analytical techniques applied in this respect is X-ray Diffraction (XRD).
XRD can be used to
A major advantage of this technique is that it can be used for both qualitative identification and quantitative estimation of phases.
Whole rock analysis: A semi-quantitative measurement of the total mineral content of a sample including a full interpretation particularly with respect to silica minerals, feldspar and carbonate compositions, evaporites (anhydrite/gypsum), zeolites and heavy minerals.
Clay-fraction quantification: A separation and quantification of the <2 micron clay fraction phases. Treatments to identify the components include glycolation and heating to 380C and 550C. Where feasible this analysis will provide information on:
Identification of Scales, Drilling Mud, and Reaction Products: It is often necessary to identify down-hole corrosion or reaction products, scale materials, and any residual solids during petroleum production. The types of materials vary and include iron or calcium carbonates, iron oxides and sulphides, drilling mud such as bentonite or barite, and toxic reaction products. The most convenient and rapid technique often used in this case is X-ray diffraction employing a whole-rock type analysis.