Case History - Krug-Olson Waterflood

Kansas Waterflood Symposium of the Society of Petroleum Engineers of AIME,19 November, Great Bend, Kansas Abstract The Krug-Olson Waterflood which is currently a part of a cooperative floodprogram, encompasses 480 floodable acres. It was initiated on the F. Krug" A" Lease, Hall-Gurney Field, Russell County, in 1953, as the firstknown, controlled Lansing limestone formation waterflood in Kansas. Inaugurated as a pilot venture with limited reservoir information available, this waterflood has demonstrated the flood-ability of the Lansing formation. Subsequently, extensive waterflood operations have been initiated in the Hall-Gurney Field Lansing formation and in the Lansing pays in other similar Kansas fields. The Krug-Olson waterflood, although developed on an irregular input well pattern and lacking differentiation of injection into the Lansing pay zones, has proven to be an effective and profitable operation. The inputwells are converted producers in which completions were generally through openhole. Injection profile surveys conducted on a portion of the input wells indicate a reasonable displacement can be expected in each of the several zones open to the well bores of input and producing wells. Performance to date indicates secondary recovery greater than 50 per cent of primary recovery can be expected.