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OwnerMikhail Vladimirovich Kurlenya, Sergei Vladimirovich Serdjukov +1inventors
InventorsMikhail Vladimirovich Kurlenya, Sergei Vladimirovich Serdjukov, Khaim Berkovich Tkach
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The proposed method for processing the productive formation in a bottom-hole zone of a well (1) comprises heating the liquid in the bottom-hole zone of a well (1) and removing clogging products therefrom. In accordance with the technical solution, the upper part of the bottom-hole zone of the well (1) is sealed before heating the liquid, thus forming a bottom-hole chamber (6), and after the heating, the liquid within the volume of the bottom-hole chamber (6) is cooled and then this chamber (6) is unsealed before removing the clogging products therefrom. In the proposed packer (4) for processing the productive formation in the bottom-hole zone of a well (1), comprising a body (10) with a means for radial compaction in the form of sliding cheeks, a cup-type seal (15) and a drive, and a suspension means (2), in accordance with the technical solution, the lower end face (5) is made in the form of a concave surface of the second order. A method for fixing a packer (4) in a well (1), comprising lowering it into the well (1) to a required depth, increasing the diametral size of the packer (4) and deforming its cup-type seal (15) in a radial direction, wherein in accordance with the technical solution, the packer (4) is subjected to temperature action different from the temperature of the well liquid at the point of its installation. 19 dependent claims, 15 drawings.
A method for processing a productive formation in a bottom-hole zone of a well (1), comprising heating liquid in the bottom-hole zone and removing clogging products from the bottom-hole zone, characterized in that a temperature-action element (14) for heating the liquid to a temperature above the boiling point of its components is lowered into the bottom-hole zone with use of a suspension means (2), a bottom-hole chamber (6) is formed in the bottom-hole zone of the well (1), an upper portion of the chamber higher than the positioning of the temperature-action element (14) is sealed by a packer (4), after being heated the liquid is cooled, wherein heating the liquid and cooling it is carried out within the volume of the bottom-hole chamber (6), then the bottom-hole chamber (6) is unsealed by removal of the packer (4), after which the clogging products together with oil products are removed from the bottom-hole zone.
A packer (4) for processing a productive formation in a bottom-hole zone of a well (1), comprising a body (10) with a means for radial compaction in the form of sliding cheeks, a cup-type seal (15) and a drive, and a suspension means (2), characterized in that its lower end face (5) is made in the form of a concave surface of the second order.
A method for fixing a packer (4) in a well (1), comprising lowering the packer (4) into the well (1) to a required depth increasing diametral size of the packer (4) by changing the shape of sliding cheeks during reverse martensite conversion of material with shape memory, deforming its cup-type seal (15) in a radial direction, subjecting the packer (4) to temperature action, different from the temperature of the well liquid at the point of its installation, characterized in that the temperature action on the packer (4) is carried out by reducing the temperature to a temperature below the temperature of the well liquid at the point of installation of the packer (4) prior to lowering the packer (4) to the required depth.
Dependencies are inferred from the claim text.