How to Live with Proration of Water Floods In Lansing-Kansas City Fields, Kansas
- E.E. Funk (Cities Service Oil Co.)
- Document ID
- Society of Petroleum Engineers
- Journal of Petroleum Technology
- Publication Date
- April 1960
- Document Type
- Journal Paper
- 16 - 18
- 1960. Original copyright American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. Copyright has expired.
- 5.4.1 Waterflooding, 4.1.2 Separation and Treating, 5.7.2 Recovery Factors, 4.1.5 Processing Equipment
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While the impact of relatively large amounts of waterflood oil production has caused some waterflood proration, reduction of input rates or restriction of stimulated production endangers ultimate oil recovery. Water flood proration may safely be applied to new projects using a preset project allowable. Operators may thereby develop in stages so that stimulated wells produce at capacities within the project allowable.
Project allowables are best suited to large projects. A State unitization law is needed to encourage formation of most of the possible large projects. Stage development cooperatively within a preset allowable is possible, but the existing haphazard projects in the Lansing-Kansas City fields need capacity allowables. Haphazard injection is inefficient and must be discouraged.
Prorated water floods must use not less than a minimum efficient input rate. High recovery efficiency dictates low pumping fluid levels and the avoidance of wellbore restrictions. Suddenly applied waterflood proration will reduce ultimate oil recovery, but selective application by wells will reduce the loss. Selection requires good data on each well's current performance and general condition.
Water flooding has, from the process's inception some 40 years ago, continually grown. Until recent years, the many remarkable production increases obtained by water flooding were universally acclaimed by the industry. Likewise, it was unthinkable to restrict waterflood production rates because the process in itself is a sound act of conservation. The economic facts of life in the domestic oil production field now so favor water flooding that it was inevitable to hear some operators, having few properties under flood, clamor for proration of water floods.
Kansas, as well as several other states, has seen its Corporation Commission recognize the clamor for proration of water floods. For the most part the Kansas Commission used stop-gap measures at first. Recent actions show a fairly consistent policy that operators may expect some proration of water floods. Operators must admit that both pressure maintenance and secondary recovery activities can be handled in such a manner that no damage will result from fairly applied and properly administered proration.
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