Oct. 20, 2004


Many people have noted cases where significant production is lost after shutting in a well following a partial clean-up after a frac. Sometimes the damage occurs even when the well has been flowing steadily for a long period of time (months or even years). As always, there are also cases where a shut-in has seemed to improve production after a frac.

The reasons for this apparently contrary behavior may lie in fundamental concepts of relative permeability hysteresis and capillary pressure. Theoretical reasons for increased damage resulting from well shut-ins after partial post-frac clean-up will be discussed. Conditions where shut-ins can be beneficial will also be discussed, should anyone be fortunate enough to encounter them. Methods to help minimize damage from the identified mechanisms will also be mentioned.

Featured Speakers



Robert Woodroof

Date and Time

Wed, Oct. 20, 2004

11:30 a.m. - 1:30 p.m.
(GMT-0500) US/Central

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The Westlake Club

570 Westlake Park Blvd.
Houston, Tx