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Home My WebLink AboutGMC Data Report No. 095X-ray diffraction analysis of seven core samples from the Phillips Petroleum Company (Cherryville Corp.) North Cook Inlet Unit A-12 (A-15) well Received 10 November 1988 Total of 2 pages in report Geologic Materials Center Data Report No. 95 Internal Correspondence Date: February 20, 1987 Subject: Advanced Analytical Services Report 87-8 XRD Analysis of Seven Samples from Cook Inlet Tertiary Basin- Cherryville NCI-A 15 File Code: 102.0 From/Location: C.J. Stuart- PRC C10 Telephone: 754-6456 To/Location: S. Bergman- PRC 3005 Problem Seven samples from Cook Inlet Alaska Tertiary Basin were submitted for x-ray diffraction analysis. These results will be used for sandstone reservoir quality characterization. Method The samples were ground to approximately 40pm in size. Bulk whole rock and <2pm clay size portions were analyzed. The bulk whole rock was analyzed as a random packed sample. The <2pm clay fraction was separated from the bulk rock by centrifugation and analyzed as an oriented sample prepared by pressure mounting techniques on stainless steel plates. The analyses were performed on a Scintag x-ray diffractometer at 45 KV-35 mA, using Cu Ka radiation and a solid state detector. The bulk rocks were analyzed over a 2-theta range of 2-45 degrees while spinning. The <2pm clay fraction was analyzed over 2-28 degrees while spinning. Both sets of analyses were run at 2 degrees per minute. The <2pm clay fraction was also glycolated to allow for identification of mixed-layer phases. Semi-quantitative results are reported. The data are obtained by calculations using internal reference ratios and integrated peak areas. The standard internal reference ratios have been determined specifically for the ARCO Scintag x-ray diffractometer. Results and Conclusions The major phases present are quartz, microcline, feldspars, and clay minerals (TLS). The <2pm clay size fraction phases present are kaolinite, chlorite, illite, a mixed- layer phase, and quartz. IfI can be of further assistance, please call. . J. Stuart cc: C.A. Andersen GMC Data Report No. 95 Page 1/2 Sample Q TLS M F 11136.2 ' 12 ' 2'3 31 34 11146.3 14 19 24 43 11158.5 9 17 32 42 12947.4 28 14 30 28 12950.4 23 25 22 30 12968.7 30 , 22 24 . , . 24 .. major phases Sample Q Kaolinite Chlorite Illite Mixed Layer 11136.2 0 2 0 1 20 11146.3 0 4 0 2 13 11158.5 0 2 0 0 15 12938.8 1 4 8 1 14 12947.4 1 3 0 2 8 12950.4 i 5 0 " 3 17 - 12968.7 2 5 0 4 11 < 2pm clay fraction GMC Data Report No. 95 Page 2/2