Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Patent
1997-07-14
1999-03-02
Tucker, Philip
Earth boring, well treating, and oil field chemistry
Earth boring
Contains organic component
507266, C09K 700, C09K 702
Patent
active
058771263
ABSTRACT:
A method of reducing formation damage when drilling for oil and gas. Firstly, determining initial water, hydrocarbon and gas saturation in the porous formation under consideration. Secondly, determining a preferential wettability of the porous formation. Thirdly, determining potential damaging effects due to aqueous phase trapping as a result of increasing water saturation in the porous formation. Fourthly, determining an alcohol type and concentration that will reduce severity of aqueous phase trapping. Fifthly, incorporating the alcohol type and concentration into a drilling fluid. The alcohol concentration will not less than 1% of the volume of the drilling fluid. Sixthly, pumping the drilling fluid containing the alcohol down a drilling string to a drill bit during drilling operations. The described method reduces invasive damage caused by drilling fluid entering the formation.
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Reductions in the Productivity of Oil & Gas Reservoirs due to Aqueous Phase Trapping by D. Brant Bennion, Mauro F. Cimolal, Ronald F. Bletz, F. Brent Thomas, Petroleum Society of CIM, Paper No. CIM 93-24, p1-10 (13 pages in total with figures and tables), May 1993.
Properly designed underbalanced drilling fluids can limit formation damages, P. L. Churcher, Fred J. Yurkiw, Ron F. Bietz, D. Brant Bennion, Oil and Gas Journal, Apr. 29, 1996, pp. 50-55.
Underbalanced Drilling, Praises and Perils, D. Brant Bennion, F. Brent Thomas, Ronald F. Bietz and Douglas G. Bennion, SPE 35242, paper presented at SPE Permian Basin Oil and Gas Recovery Conference, Mar., 1996, Midland Texas, 13 pages.
Bennion Douglas Brant
Churcher Peter Lawrence
Masikewich James Darrell
Lambert Anthony R.
Q'Max Solutions Inc.
Tucker Philip
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