Wells – Processes – Chemical inter-reaction of two or more introduced materials
Reexamination Certificate
2007-04-10
2007-04-10
Suchfield, George (Department: 3676)
Wells
Processes
Chemical inter-reaction of two or more introduced materials
C166S308200, C166S308300, C166S308600, C166S309000, C507S202000, C507S212000, C507S213000, C507S214000, C507S262000, C507S268000, C507S922000
Reexamination Certificate
active
11017548
ABSTRACT:
Disclosed herein is a method of treating a subterranean formation utilizing a fluid having a splittable foamer, i.e., a fluid that creates a stable foam when it contacts the formation but that loses its ability to foam as it remains in contact with the formation for extended time. The present method has the advantage that the fluid can be recovered from the well unhindered by the difficulties involved with recovering a foamed fluid from a well. The present method does not require the use of breakers, though the splitting of the foam can be accelerated by introducing an organic or inorganic acid into the well, if so desired.
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Union Carbide Corporation, Triton SPSeries Surfactants, 1998, 16 pages.
Gupta D. V. Satyanarayana
Hlidek Barry T.
BJ Services Company
Howrey LLP
Suchfield George
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