METHOD AND PACKER FOR PROCESSING A PRODUCTIVE FORMATION IN BOTTOM-HOLE ZONE OF A WELL, AND METHOD FOR FIXING A PACKER INSIDE A WELL

摘要

According to the invention, the method for processing the production layer i n a bottom hole area (1) comprises the following steps: the liquid in the bott om hole area (1) is heated and clogging products are removed. According to the invention, the top of the bottom hole area (1) is sealed off before the liqu id is heated and a chamber (6) is created in the bottom of the hole. The liquid in the bottom hole chamber (6) is cooled, and the chamber is unsealed once more before the clogging products are removed. The inventive packer (4) designed for processing the production layer in the bottom hole area (1) contains a body (10) (containing a radial joint containing sliding cheeks, a cup-type seal (15) and a drive) and a suspension (2). The lower butt (5) has the form of a concave surface of the second order. The method of fixing the packer (4) in a bottom hole (1) includes the following steps: the packer is lowered into the bottom hole (1) to a determined depth, the radial dimension s of the packer (4) are increased and the cup-type seal (15) is deformed radially. The packer is then subjected to a thermal action, whereby the temperature applied thereto is different from the temperature of the bottom hole liquid at the place where the packer is installed.