RU8044U1 - INSTALLATION FOR PULSE INFLUENCE ON THE DEPOSIT - Google Patents

Abstract

1. Installation for pulsed impact on the reservoir, containing a tubing string installed in the well with a cylinder, a plunger with a check valve placed in the cylinder and a rocking machine connected by a string of rods to the plunger so that a message is provided at the top of the plunger stroke with a cavity of the tubing string, characterized in that it is equipped with a plug mounted coaxially with the possibility of reciprocating movement on the cylinder or in its cavity and in contact with edstvenno liquid in skvazhine.2. Installation according to claim 1, characterized in that the plug is made in the form of a glass.

Description

f Installation for pulsed impact on the reservoir

The utility model relates to the field of exploitation of oil fields using pulsed wave action on oil-saturated reservoirs.

A known installation for pulsed impact on the reservoir, containing a tubing string installed in the well with a hard place on the shoe, a falling load placed in the string and a mechanism for lifting the load 1.

The disadvantage of the installation is that it needs a special drive. In addition, the falling load does not, provides a uniform distribution of the shock load on the shoe of the column, which can lead to its destruction.

Closest to the claimed installation is a device for pulsed impact on the bottomhole zone of wells with a shock wave, comprising a tubing string with a pipe, a plunger with a check valve and a shut-off element with a spring-loaded valve and radial channels 2,

M. КЛ.6 Е21В 43/25

The disadvantage of this device is that a significant part of the pulse energy generated in the tubing is extinguished in the shut-off element.

The technical problem faced by the utility model is rt-i-ntte energy losses during transmission of pulses from the pump-compressor string to the well and further into the reservoir,

To solve this problem, an installation for impulse action of a deposit containing a tubing string installed in the well with a cylinder and a plunger connected by a string of shtangs with a pumping unit so that at the top of the plunger stroke a message is made between the tubing string cavity and the tubing cavity , is additionally equipped with a plug mounted coaxially with the possibility of reciprocating motion on the cylinder or in its cavity.

The plunger is made with a check valve, below which windows can be made in it, and the working stroke of the rocking machine at the upper point ensures the exit of the plunger windows from the cylinder. In the absence of windows, the plunger leaves the cylinder completely.

The plug accepts the impact of a column of falling fluid and transmits an impulse directly to the fluid in the well. The mobility of the plug and direct contact with the fluid in the well contribute to

maximum energy conservation of the pulse excited in the pump and compressor string.

The cap can be made in the form of a glass.

The drawings give a diagram of the installation for pulsed exposure to zapyazh.

The installation contains a yci-reinstalled in the well 1 column of pump-compressor pipes 2 with cylinder 3 ii side holes 4. In the polo ,. of cylinder 3, a plunger 5 with a return 6 and windows 7 is placed, made lower than the valve 6, connected by a column of rods 8 with a rocking machine 9 mounted on the surface. The exit from the cylinder 3 with the bottom lojiu: blocked by a plug 10, made in the form of a glass and mounted on the cylinder with the possibility of reciprocating motion. The plug may be spring loaded. In the absence of a spring, the plug is pressed upward by excess pressure from the side of the well cavity.

At its lower point, the plunger 5 is located at the very bottom of the glass 10 i when it moves upward in the pipe cavity, bounded by the bottom of the glass (plug) and the valve 6 forms a zone of reduced pressure. If holes 4 are not made in column 2, then the pressure in the cavity of the column above the plunger will increase.

The design shown in the drawing is designed so that when the plunger 5 arrives at the upper point, it leaves the cylinder 3 by the windows 7 and completely releases the entrance to it for the liquid from the column 2. The liquid

an opened cavity, the pressure of which is much lower. The momentum from the impact of the liquid column on the bottom of the glass is transmitted through the liquid in the well to the reservoir.

Plunger 5 can be made without windows, but then at the top point it should completely exit the cylinder.

The impact of a liquid column into the plug causes elastic oscillations in the formation, which act on stagnant and low-permeability zones and contributes to their more intensive involvement in development.

Sources of information:

1. RF patent on application No. 95114981/03, MKI Е21В 43/25, 1995;

2. USSR Certificate of Authorship No. 1719623, MKI E21B 43/25, 1989. General Director of OJSC NK Priobye v. ) f V.Yu. Morozov% - 7- N, 4 l - Formula

Claims (2)

1. Installation for pulsed impact on the reservoir, containing a tubing string installed in the well with a cylinder, a plunger with a check valve placed in the cylinder and a rocking machine connected by a string of rods to the plunger so that a message is provided at the top of the plunger stroke with a cavity of the tubing string, characterized in that it is equipped with a plug mounted coaxially with the possibility of reciprocating movement on the cylinder or in its cavity and in contact with edstvenno with downhole fluid. 2. Installation according to claim 1, characterized in that the plug is made in the form of a glass.