Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate
2007-03-27
2007-03-27
Heitbrink, Jill L. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
C166S380000, C249S090000, C425S195000
Reexamination Certificate
active
10433414
ABSTRACT:
Method for the centralization of drill casings in a tight borehole, both vertical and deviated, comprising the following operations: Application on the casing section in question, of an adherence strip equipped with one or more housings and rapid adjustable lever closure; Insertion of suitable molds in the housings of which the strip is equipped; Injection into the molds of plastic material characterized by a high mechanical resistance, a high degree of surface adhesion and resistance to abrasion by friction, and also in-place elasticity, higher than the elasticity of the casings; Removal of the adherence strip once the hardening of the plastic material in the shape of the mold, has been completed.
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Calderoni Angelo
Zausa Fabrizio
ENI S.p.A.
Heitbrink Jill L.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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