SU1209833A1 - Well-production installation - Google Patents

Description

The invention relates to the oil and gas industry, in particular, to devices for simultaneously separate operation of a fountain well.

The purpose of the invention is to provide the possibility of blocking a well with simultaneous separate fountain operation of two layers.

FIG. 1 is a diagram of the proposed installation; FIG. 2 — node I in FIG. one ,

The installation consists of a lift pipe string 1, on the lower end of which a valve assembly 2 is installed, consisting of a spring 35 piston ball 4, a pusher 5 and a polished tip 6 with pressure relief. The column of lift pipes 1 is suspended at the mouth of the piston 7 of the hydraulic cylinder, the piston cavity of which is filled with small 8 and connected to the pipeline 9.

Concentric with respect to the column of elevators 1x of the pipe 1, a column of external row of elevator pipes 10 with radial channels 11 is mounted in the borehole, coupled by a sleeve to housing 12. On the column of external row of elevator pipes 10 there is a sliding sleeve 13 with a groove 14 and radial holes 15, the polished bushing 16, the bushing 17, the spring 18, the stop 19, the guide rod 20, the coupler connected to the column of elevator tubes 1, and the collet 21. The separation of the layers is carried out by pakaramn 22 and 23.

. The device works as follows.

The well of the outer row of elevator pipes 10 is lowered into the well. The radial channels 11 are blocked by a sliding sleeve 13. After the upper packer 22 is seated, compacted with the weight of the elevator pipes 10, a sufficient pressure is created for the lower hydraulic action of the lower packer 23. Then the string of elevator pipes 1 is lowered with the valve assembly 2, which is usually opened and held in this position by the piston spring 4. The column of the elevator pipes is lowered until it stops, so that the collet 21 engages with the groove 14 of the sliding sleeve 13. Next, the pipe crimping and annular annular space, then press the annular prostration. Giving the oil 8 through the pipeline 9, move the piston 7 of the hydraulic jack,

lift the column of elevator tubes of the outer row. With this, the collet 21 moves upward the sliding sleeve 13 to align the radial bores with the radial bores 15.

At the same time, as the lift pipe string 1 rises, the ball valve 2 opens under the action of the piston spring 4.

At the time of the complication, a pressure drop occurs in the pipe 9 and under the piston 7 of the hydraulic jack, which moves downward under the weight of the tubing string 1. Move

down and the columns of the lift tubes of the outer row 10, and with it the collet 21 and the ball valve 11. The collet 21, which is engaged with the sliding sleeve 13, moves it downward, blocking the radial channels 11, of the compartment, the gas-liquid flow in the annular space from upper horizon. At the same time, the pusher 5, resting against the spring-loaded sleeve 17, retracts and, overcoming the action of the spring of the piston 4, causes the ball 3, equipped with guide pins (shown in dotted lines), to turn and block the hole of the central

channel in the path of the gas-liquid flow from the lower horizon.

Yu

-J

1

Editor I.Nikolaychuk

Order 479/40 Circulation 548 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, Proektna St., 4

FIG. 2

Compiled by V. Boryskina

Tehred T. Tulik Corrector I. Erdeyi

Claims (1)

INSTALLATION FOR PRODUCING PRODUCTS FROM A WELL · containing a column of elevator pipes, at the lower end of which a valve assembly is installed, and the upper end is connected to a hydraulic jack installed at the wellhead, characterized in that, in order to provide the possibility of blocking the well while simultaneously separate fountain operation of two layers, it is equipped with a sliding sleeve with radial holes and a recess on its inner surface, a collet and a column of an external pipe concentrically mounted relative to the column of elevator pipes yes tubing with radial channels on which the sliding sleeve arranged to communicate with the spaces between the columns of tubing and annulus space wells, and the collet is rigidly connected to tubing string to engage the recess of the sliding sleeve. '' 1 12.09833 2