LINER HANGER MODULAR Russian patent published in 2022 - IPC E21B43/10 

FIELD: mining industry.

SUBSTANCE: invention relates to the mining industry, namely to the oil and gas industry, in particular to the field of construction and operation of wells of hydrocarbon deposits. A modular liner hanger is proposed, consisting of extractable and non-removable parts connected to each other by a connection with a left-hand thread. In this case, the non-removable part includes an anchor module, a mechanical packer module and a lower connecting sub connected in series with each other by threaded connections. The armature module consists of a profile body with a cone and longitudinal grooves and a persistent pipe thread at the ends, on the outer surface of which a pusher is installed, connected by shear screws to the piston, with a solid armature crown with gear elements fixed on it. And the mechanical packer module is made in two alternative designs. The first version of the mechanical packer module consists of a profile body with a resistant pipe thread, on the outer surface of which a polished funnel, a pusher and a collar assembly are installed in series, in contact with each other. And the module of the mechanical packer in the second version contains a reverse anchor assembly and consists of a profile body with a thrust pipe thread, on the outer surface of which a polished funnel, a solid crown of the reverse anchor connected to the cone by means of shear screws and in contact with the pusher of the collar assembly are installed in series. At the same time, the extractable part of the liner hanger includes an installation tool, which also has two versions. The cemented setting tool in the first version consists of two subs - upper and lower, and two branch pipes - upper and lower, interconnected by threaded connections, a seat connected to the lower branch pipe, a mechanical packer activation unit installed on the upper sub and connected to the pressure test unit the upper packer, the floating mechanical disconnect unit in contact with the pressure unit of the upper packer and the hydraulic disconnect unit before cementing, installed on the outer surface of the upper branch pipe, and the sealing package installed on the lower sub, and is equipped with a cementing plug. Wherein the upper branch pipe is connected by its lower end to the lower branch pipe by means of a lower sub, and an upper sub is installed at the upper end of the upper branch pipe. And the setting tool in the second version consists of two subs - upper and lower, and two branch pipes - upper and lower, interconnected by threaded connections, a mechanical packer activation unit installed on the upper sub and connected to the upper packer pressure test unit, a floating mechanical separation unit , which is in contact with the pressure test unit of the upper packer and the hydraulic separation unit installed on the outer surface of the upper branch pipe.

EFFECT: simplification of design, facilitation of manufacture, increase in reliability, implementation of the principle of "modularity" with the possibility of interchangeability of units intended for different types of well completion operations.

1 cl, 10 dwg