SU448277A1 - Plunger for oil and gas wells - Google Patents

Description

one

I The invention relates to fan; tegazodobyteskuyu and concerns plungers designed for the removal of fluid from the oil and gas wells, wells and removal of paraffin and resinous substances on the surface of the lift tubes,

Known plunger for plunger lift, containing the core: With a head and a tip, a movable coupling fixed from the pro: the gate around the core, and the packer. I The purpose of the invention is to more effectively remove paraffin and resinous substances from the surface of the leaf. tov tubes i

; For this, in the proposed plunger, the lower end of the packer is rigidly connected to the core, and the upper end to the movable coupling, i; The drawing shows the pradla- igoem plunger, general view,. The plunger consists of a core I with a head2 and a tip 3, |; a packer 4 made of elastic

elastic elements. The lower end of the packer is rigidly sd with the core I, and the upper end with the movable coupling 5, fixed from turning around the core I of the spider 6,

I The plunger operates as follows I,

: When the plunger falls into the lift; the outgoing pipes, the movable coupling 5 is displaced up to the stop in the head 2, the closures 4 are stretched, its diameter is at; This is significantly less than the internal diameter of the lift pipes,; When the plunger is seated to a special stop installed in the lift pipes, the coupling 5 is displaced downward, compressing the packer 4, the diameter of which increases to the internal diameter of the pipes. Under the action of the fez-increased pressure drop acting on the plunger, it begins to move upwards, using a packer 4, tightly fitting IJiK to the surface of the lift tubes, the deposition of paraffin and resinous substances.

Having risen on the wellhead, the plunger strikes the head 2 against the shock absorber, while the coupling 5, continuing by inertia to move upwards, the workpiece packer and the plunger, thrown off by the shock absorber, fall to the bottom of the well;

Subject invention

Plunger for oil and rass-J

wells, consisting of a core with a head and a tip, a movable coupling fixed. .

A packer, characterized in that, in order to more effectively remove paraffin and resinous substances from the surface of the lift tubes, the lower end of the packet is rigidly connected with the core, and the upper end with the movable tube; .