Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2005-01-11
2005-01-11
Sandy, Robert J. (Department: 3677)
Wells
Processes
Cementing, plugging or consolidating
C166S308400
Reexamination Certificate
active
06840318
ABSTRACT:
A method is given in which there is delayed release from the treatment fluid of solid chemicals that are obtained in bulk powder form. The method is used in situations in which it is difficult to encapsulate the chemical to achieve delayed release because the chemical is obtained in powdered form. The method involves delivering the powdered chemical in capsules consisting of encapsulated granulates obtained by aggregating the bulk powder under pressure to form a densified material and, optionally, then dry comminuting the densified material to produce granulates of the desired size. The treatment is hydraulic fracturing and the chemical is a breaker, or the treatment is well cementing and the chemical is a dispersing agent, fluid loss control additive, set accelerator, or extender.
REFERENCES:
patent: 3958638 (1976-05-01), Johnston
patent: 4036401 (1977-07-01), Nachtigall, Jr.
patent: 4741401 (1988-05-01), Walles et al.
patent: 4770796 (1988-09-01), Jacobs
patent: 5102558 (1992-04-01), McDougall et al.
patent: 5102559 (1992-04-01), McDougall et al.
patent: 5110486 (1992-05-01), Manalastas et al.
patent: 5192615 (1993-03-01), McDougall et al.
patent: 5204183 (1993-04-01), McDougall et al.
patent: 5370184 (1994-12-01), McDougall et al.
patent: 5497830 (1996-03-01), Boles et al.
patent: 5580844 (1996-12-01), Swarup et al.
patent: 5591700 (1997-01-01), Harris et al.
patent: 6140277 (2000-10-01), Tibbles et al.
patent: 6265355 (2001-07-01), Lai et al.
patent: 6399546 (2002-06-01), Chang et al.
patent: 6599863 (2003-07-01), Palmer et al.
patent: 20020004464 (2002-01-01), Nelson et al.
patent: 20020193257 (2002-12-01), Lee et al.
patent: 0275624 (1987-07-01), None
Lee Jesse
Nelson Erik
Echols Brigitte L.
Mitchell Katherine
Mitchell Thomas O.
Nava Robin
Sandy Robert J.
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