Technique to reheat cores improves analysis

Coal-bed methane cores can be reheated to downhole temperatures, using a temperature-compensated gas-measurement technique, facilitating more-accurate gas measurements. The true volume and nature of gas can be recorded with the cores at bottom hole pressure temperature. The procedure helps predict c...

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Bibliographic Details
Published in:	The Oil & gas journal Vol. 89; no. 51; pp. 90 - 92
Main Authors:	BENT, P.W, RADFORD, S.R, OWEN, L.B
Format:	Magazine Article
Language:	English
Published:	Tulsa, OK Pennwell 23-12-1991 Endeavor Business Media
Subjects:	03 NATURAL GAS ALKANES Analysis Applied sciences COAL DEPOSITS COAL GAS COAL SEAMS Cores Crude oil, natural gas and petroleum products Crude oil, natural gas, oil shales producing equipements and methods Energy Exact sciences and technology FLUIDS Fuels Gas well production GASES GEOLOGIC DEPOSITS HYDROCARBONS Measurement METHANE MINERAL RESOURCES Natural gas Oil wells ORGANIC COMPOUNDS PRESSURE MEASUREMENT Prospecting and production of crude oil, natural gas, oil shales and tar sands PYROLYSIS PRODUCTS RESOURCES 030300 > Natural Gas > Drilling, Production, & Processing Techniques TEMPERATURE MEASUREMENT United States > US Cores Gas field Methane Coal field Gas solid adsorption Heating equipment Coal Gas saturation Laboratory test Coal seam
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Summary:	Coal-bed methane cores can be reheated to downhole temperatures, using a temperature-compensated gas-measurement technique, facilitating more-accurate gas measurements. The true volume and nature of gas can be recorded with the cores at bottom hole pressure temperature. The procedure helps predict coal-bed gas reserves with improved accuracy. The cooling effects on the gas and mud in the core can be reversed by increasing the temperature of the core barrel and its contents at the surface. Reheating causes the volume of mud and gas inside the sealed barrel to expand to bottom-hole levels. The successful application of the reheating equipment in a field trial in the San Juan Basin is reported.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 content type line 24 ObjectType-Article-1 SourceType-Magazines-1 None
ISSN:	0030-1388 1944-9151