Control of heat injection based on temperature and in-situ stres

Details Control of heat injection based on temperature and in-situ stres Control of heat injection based on temperature and in-situ stres

1998-06-11

2000-08-15

Lillis, Eileen Dunn

Wells

Processes

Heating, cooling or insulating

16625001, 1662721, 166 57, 166 64, 16625007, 7315217, 7315259, 73 9R, 73784, E21B 3600, E21B 4706

Patent

active

061021229

ABSTRACT:
The invention is a method to operate a heat injection well, the method comprising the steps of: providing a heat injection well comprising a metal casing and a controllable source of heat within the casing; determining the maximum temperature of the casing which can be applied to the metal casing as a function of external pressure; providing a formation stress measurement device within the formation in the vicinity of the wellbore; providing a temperature measurement device effective for determining the temperature of the casing; determining the formation stress during operation of the heat injection well; and controlling heat released from the controllable source of heat to maintain the formation stress below a predetermined fraction of the collapse stress of the casing. This method significantly reduces conservatism necessary in operation of heat injection wells due to unknown formation stresses, unknown variations in formation stress over the course of heat injection operations, and unknown temperatures of casings.

REFERENCES:
patent: 4413678 (1983-11-01), Gillespie
patent: 4640352 (1987-02-01), Vanmeurs et al.
patent: 4886118 (1989-12-01), Van Meurs et al.
patent: 4899320 (1990-02-01), Hearn et al.
patent: 5060287 (1991-10-01), Van Egmond
patent: 5065818 (1991-11-01), Van Egmond
patent: 5190405 (1993-03-01), Vinegar et al.
patent: 5255742 (1993-10-01), Mikus
patent: 5297626 (1994-03-01), Vinegar et al.
patent: 5318116 (1994-06-01), Vinegar et al.
patent: 5392854 (1995-02-01), Vinegar et al.
patent: 5433271 (1995-07-01), Vinegar et al.
patent: 5517593 (1996-05-01), Nenniger et al.

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