RU9884U1 - Wellhead Valves - Google Patents

Description

Wellhead C1-well fittings.

The invention relates to the field of oil production and can be used for equipment of the mouth of oil pumping wells.

Known wellhead reinforcement comprising a pipe head with lateral branches, a pipe suspension with a channel and a locking member 1,2 installed therein.

A disadvantage of the known designs is their significant metal consumption and height dimensions, which, when operating wells with sucker rod pumps, forces them to be installed on a high foundation or to reduce well productivity.

The technical challenge facing the invention is the development of downhole fittings with reduced dimensions.

The problem is solved in that in the wellhead fittings containing a pipe head with lateral branches, a pipe suspension and a bypass pipe for communicating annular and pipe spaces, the pipe head is made up of two faceplates with radial channels acting as side branches. The tube suspension is made directly in the upper faceplate and a bypass valve is installed in it, communicating with the annulus and tube spaces by channels.

M. КЛ.6 Е21В 33/03

The invention is illustrated in the drawing, which shows a diagram of the wellhead well reinforcement,

The wellhead fittings are mounted on a column head (not shown) and contain a composite pipe head made of two faceplates 1 and 2 attached to each other, while the upper faceplate 2 is compatible 1; it has a pipe suspension 3 and an overflow valve 4 is installed in it. the faceplate 1 has a radial channel 5, which is a lateral outlet, to which the valve 6 is connected, and in the upper one, a radial channel

(branch) 7 to which the valve 8 is connected.

, Side bend 5 serves to communicate with the pipe space (

cavity) of the pipe string 9 suspended in the pipe suspension 3, and the outlet J serves to communicate with the annular space 10.

During operation of a sucker rod pump, the rod of which (not shown) passes through the stuffing box 11, oil flows through tubing pipes 9, lateral branch 7 and valve 8 from the bottom of the well to the surface.

Gas, with increasing pressure in the annulus 10, squeezes the spring-loaded shutter 12 of the valve 4 and enters the pipe cavity 9. To switch the message between the annulus and the tube space by rotating the end screw 13, a gap between it and the shutter 12 is selected and the latter is pressed against the valve seat.

Due to the execution of the tube head in the form of two faceplates with radial channels, the wellhead valves become more compact in terms of

height, which eliminates the need to install a high foundation under the pump-rocking pump of the rod pump.

Sources of information:

1. The author's certificate of the USSR No. 541969, MKI E21B 33/03, 1974;

2. The author's certificate of the USSR No. 1388542, MKIBE21V 33/03. 1986.

Director of NPK Nov

V.T. Kushin

Claims (1)

Wellhead fittings comprising a pipe head with lateral branches, a pipe suspension and an overflow valve for communicating annular and pipe spaces, characterized in that the pipe head is made up of two faceplates with radial channels serving as side branches, while the upper faceplate is aligned with the pipe suspension and it also has a bypass valve.