| 摘要 |
#CMT# #/CMT# The method involves inserting a long length cylindrical tube (1) into a well or a piping to be cased, and proceeding a radial expansion of the tube using an inflatable bladder (3) so that a wall (C) bears against the wall of the well or the piping. The radial expansion is achieved at certain areas spaced from each other by non-expanded portions (5) and not on the entire length of the tube, such that a total length of expanded areas (4) is smaller than a total length of non-expanded areas, and a number of expanded areas is equal to three. #CMT# : #/CMT# An independent claim is also included for a method for controlling a production of fluid inside a well. #CMT#USE : #/CMT# Method for casing a well e.g. oil well, open well and water well, dug in a ground or a buried or non-buried piping e.g. casing line, in a field of water or crude oil production. #CMT#ADVANTAGE : #/CMT# The method permits repairing and/or casing of the entire or certain areas of the well or piping using the inflatable bladder in a simple, inexpensive, rapid and economic manner. The method permits reduction of the time required for casing the well or piping, and permits obtaining of a perfect centering of the casing at a level of the expanded areas and the non-expanded portions with respect to an axis of the well or piping, even if the wall is not strictly cylindrical in shape and/or if the wall has an irregular surface. The method permits cementing of the casing against the wall so as to obtain a sealing on all height of the well, thus avoiding contamination between different layers of the ground. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic illustration of a method for casing a well or buried or non-buried piping. C : Wall 1 : Long length cylindrical tube 3 : Inflatable bladder 4 : Expanded areas 5 : Non-expanded portions. |
