Wells – Processes – Separate steps of fracturing or attacking formation
Patent
1997-08-06
1999-08-31
Suchfield, George
Wells
Processes
Separate steps of fracturing or attacking formation
166295, 166300, 166308, 507211, 507222, 507922, 523130, E21B 43267, E21B 33138
Patent
active
059441062
ABSTRACT:
The present invention provides a method for reducing the amount of water produced from a subterranean formation as a result of stimulation of the subterranean formation. The method comprises the introduction of a gelled fluid to initiate a fracture in a formation, introduction of a first and second reactive polymer which leak-off into the formation along the fracture and which are capable of subsequently reacting together to form a reaction product which selectively reduces the permeability of the formation to water flow through the formation into the fracture and introduction of a crosslinked gelled fluid to extend the fracture into the formation and facilitate the introduction of a propping agent into the created fracture. The reactive polymers react in situ to form a reaction product that binds to the formation in such a manner that the flow of water is selectively retarded through the matrix while the flow of oil is substantially unaffected.
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Arrington Stephen T.
Creel Prentice G.
Dahl Jeff A.
Dalrymple Eldon D.
Halliburton Energy Service,s Inc.
Kent Robert A.
Suchfield George
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