Method for making centralizers for centralising a tight fitting casing in a borehole
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United States of America Patent
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Mar 27, 2007
Grant Date -
May 20, 2004
app pub date -
Nov 15, 2001
filing date -
Dec 15, 2000
priority date (Note) -
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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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