Development work in the field of mineral borehole logging was made in the areas of instrumentation, field testing, data processing and interpretation. / Instrumentation work included a VLF logging tool compatible with a field digital computer configured to perform log instrumentation control, numerical data acquisition and recording together with video screen graphic display. Significant improvements in the overall precision and reliability of the logging operation has been realized through the use of digital technology. / The field tests included the measurements of the following parameters: electrical resistivity, induced polarization, spontaneous polarization, electromagnetic field ratio and phase difference and temperature. The tests were performed for a wide variety of environments and targets including massive and disseminated sulfides, structural problems, coal and gold fields on properties located in Eastern Canada from Sudbury to Cape Breton Island. / The interpretation of the data yields information complementing core information such as detection of materials with some electric property contrast, localization of off-hole mineralization both in massive and disseminated form and determination of absolute value of specific in-situ rock physical properties. A better understanding of several underground processes (such as SP, uniform field induction, etc.) has resulted from the project.

Thesis (Ph. D.)--University of Texas at Austin, 1998. / Vita. Includes bibliographical references (leaves 192-194). Available also in a digital version from Dissertation Abstracts.

No description available.

Thesis (M. Sc.)--University of Hong Kong, 2003. / Also available in print.

Thesis (M. Sc.)--University of Hong Kong, 2003.

published_or_final_version / Applied Geosciences / Master / Master of Science

The purpose of this investigation is to determine the effectiveness of projective well log analysis based upon data collected from Plummer Field located in Greene County, Indiana. Projective well log analysis consists of analyzing spontaneous potential (SP) logs from existing oil and gas wells in order to determine SP gradients that may be applied to locate other undiscovered hydrocarbon accumulations. Projective well log analysis was developed in 1963 by S.J. Pirson, however, the specific parameters employed in the Plummer Field investigation were developed in 1988 by Dr. R.H. Fluegeman in order to apply to the geologic conditions in southwestern Indiana.The results of this investigation indicate that SP gradients can be interpreted to determine hydrocarbon production potential in Plummer Field with a 62% to 73% certainty. Given the petroleum industry exploration success rate of 3% to 20%, it is believed that the SP gradients established in Plummer Field can be used to identify economical hydrocarbon accumulations in areas of similar geology such as other portions of the Illinois Basin and the Michigan Basin. / Department of Geology

Thesis (M.S.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains ix, 148 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 145-148).

Thesis (M.S.)--Brigham Young University. Dept. of Geological Sciences, 2007. / Includes bibliographical references (p. 63-68).

No description available.