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Subject Keyword PETROLEUM ♦ CALIFORNIA ♦ OIL WELLS ♦ PLUGGING ♦ ALCOHOLS ♦ ECONOMICS ♦ PLUGGING AGENTS ♦ PRODUCTIVITY ♦ TECHNOLOGY ASSESSMENT ♦ WATER ♦ WELL SERVICING ♦ FEDERAL REGION IX ♦ HYDROGEN COMPOUNDS ♦ HYDROXY COMPOUNDS ♦ NORTH AMERICA ♦ ORGANIC COMPOUNDS ♦ OXYGEN COMPOUNDS ♦ USA ♦ WELLS 020300* -- Petroleum-- Drilling & Production
Abstract A 3600-ft well in California's Elk Hills field, completed with a slotted liner through a 30-ft zone, produced 250 to 300 bpd water and only traces of oil. After a furfuryl alcohol plugging treatment, production was 120 bpd oil and only 12 bpd water. To shut off the bottom water, the operator squeezed 150-gal furfuryl alcohol blend into the culprit interval, using placement tools and techniques developed by Chevron. The cause of such high water production in the San Joaquin Valley and elsewhere in the country is fissures or soft streaks which portland cements are not capable of adequately sealing. The furfuryl alcohol blend cures into an impermeable, insoluble seal. Set material has the general characteristics of bakelite plastics. Plugs have been tested to 700 F without suffering head degradation, making the process applicable to wells in steam enhanced oil recovery projects, geothermal wells, and other hot deep wells. General economics make it a viable alternative in nearly any field.
Educational Use Research
Learning Resource Type Article
Publisher Place United States
Journal Well Serv.
Volume Number 20
Issue Number 3


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