RU14383U1 - MOBILE PLANT FOR PREPARING AND DOWNLOADING POLYMER COMPOSITIONS - Google Patents

Abstract

USEFUL MODEL

"Mobile installation for the preparation and injection of polymer compositions

abstract

The utility model relates to equipment for the oil industry and can be used to prepare polymer and crosslinker solutions, followed by their injection into the well in order to increase oil recovery.

The purpose of this utility model is to create an installation for mobile servicing of oil field wells with the exception of the use of water from the reservoir pressure maintenance system and automation of the technological process.

This goal is achieved by the fact that a process flow diagram is proposed that allows the use of filtered water at a pressure of 0.4 MPa for the preparation of polymer compositions at which the polymer is wetted. The preparation of the polymer solution with its partial dissolution occurs cyclically, and the flow into the reservoir is continuous, while the crosslinker is continuously supplied. Process control is carried out by a programmable logic controller.

The equipment on the chassis is located systematically in the form of independent blocks: a system for filtering and supplying process water, a system for loading and supplying dry polymer, a system for preparing and supplying a polymer solution, a system for loading and dosing a polymer crosslinker, a system for pumping a solution into the formation, and a ventilation and heating system , control and monitoring system, auxiliary devices for maintenance, installation and dismantling of equipment.

MKI E 21 at 41/00

Description

USEFUL MODEL.

"Mobile installation for the preparation and injection of polymer compositions

The utility model relates to equipment for the oil industry and can be used to increase oil recovery.

A known installation for preparing for injection of polymer solutions into the formation, having a storage hopper for dry polymer; a device for wetting and dissolving the polymer; a container for mechanically mixing and maturing the dissolved polymer; a device for diluting the polymer solution to the concentration required by the technology and pumping the high pressure into the reservoir. (1)

Such an installation is not mobile, and the flow of the solution into the formation is cyclical, this is due to the time it takes to prepare the solution, while the injected solution quickly loses its viscoelastic properties.

A utility model is also known (certificate No. 9887 of May 16, 1999) of a mobile unit for the preparation and injection of polymer compositions, having a hopper with a screw feeder, a mixer tank, a polymer stapler loading and dosing system, a process water pipe with a mounted flow meter, high-pressure regulating valve, jet apparatus and non-return valve, electric pressure pump, ventilation and electric heating system and w: it control.

The negative point of this utility model is the use of industrial water with high working pressure (up to 18 MPa). This necessitates the use of special control valves and valves with a high working pressure, which makes it problematic to use modern tools and devices to automate the process, as well as the impossibility of carrying out the process at a pressure in the process water pipeline below 4 MPa.

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The purpose of this utility model is to create an installation for mobile servicing of oil field wells with the exception of the use of water from the reservoir pressure maintenance system and process automation.

This goal is achieved by the fact that a process flow diagram is proposed that allows the use of filtered water for the preparation of polymer compositions at a pressure of 0.4 MPa, at which the polymer is wetted. The preparation of the polymer solution with its partial dissolution occurs cyclically, and the flow into the reservoir is continuous, while the crosslinker is continuously supplied. Process control is carried out by a programmable logic controller.

The equipment on the chassis is located systematically in the form of independent blocks: a system for filtering and supplying process water, a system for loading and supplying dry polymer, a system for preparing and supplying a polymer solution, a system for loading and dosing a polymer coater, a system for pumping a solution into the formation, and a ventilation and heating system , control and monitoring system, auxiliary devices for maintenance, installation and dismantling of equipment.

Pa figure 1 shows the device of a mobile installation for the preparation and injection of polymer compositions into the well, containing:

- van 1;

- chassis 2;

- a system for filtering and supplying process water to installation 3;

- a system for loading and feeding dry polymer 4;

- a system for wetting, preparing and supplying a polymer solution to the receiving line of the injection pump 5;

- a system for loading and dosing a polymer crosslinker into the suction line of the pressure pump 6;

-system of the discharge pump 7;

- ventilation and heating system 8;

-management and control system 9,

-stair 10,

-pipeline technical water to the intake pump 11,

The preparation and injection into the well of partially dissolved polymer compositions in the installation is as follows: technical water enters the installation through the filtration system of industrial water 3, where it is divided into two streams: part of it is pumped through pipeline 12 by a centrifugal pump to the polymer wetting and supply system, where it wetted and partially dissolved to a predetermined concentration, and part of the water through the pipe 11 enters the receiving line of the discharge pump. After the filtration system and the supply of process water 3 are turned on, the dry polymer loading and supply system 4 is automatically turned on. The wetted polymer and water enter the mixer tank, where it is further mixed, partially dissolved and prepared to a certain concentration and volume. In this case, the prepared polymer solution is continuously dosed by screw pumps from the tank - mixer (with the wetted polymer and water cycled into the tank to a certain level), into the receiving line through the flow meter, while the liquid polymer crosslinker is dosed with the metering pump into the same line. The flow rate of the polymer stapler is accounted for by a second flowmeter installed on its supply line to the receiving line of the injection pump. Then the mixture of industrial water, polymer solution and polymer crosslinker is pumped into the well by the injection pump.

The control and monitoring system of the installation allows the preparation and injection of polymer assemblies in automatic mode, with a given flow rate and pressure of the injection pump, as well as testing and tuning of individual installation systems - in manual mode.

The operability and reliability of the installation is confirmed by industrial testing of a prototype.

References to the analogue:

1. "Operating Instructions for the installation for the preparation and injection of polymer solutions, Oil Machine-Building Plant at the Dagang Petroleum Administration, China, 1994. 2.

Authors:

Manyrin, Vyacheslav Nikolaevich Dosov, Alexander Nikolaevich Manyrin, Valery Nikolaevich Gaisin, Ravil Fatykhovich King Vladimir Vasilievich. Utility Model Certificate Mobile installation for the preparation and injection into the well of polymer compositions No. 9887 of 05.16.99

Claims (2)

1. A mobile unit for the preparation and injection of polymer compositions into a well, having a solution supply system for a well, a process water filtration and supply system, a dry polymer loading and supply system, a liquid crosslinker loading and dosage system, a polymer solution preparation and dosage system, a control system and control, characterized in that the introduced node filtering technical water; polymer wetting unit, where the polymer is effectively wetted under low pressure - 0.4 MPa. 2. A mobile unit for preparing and injecting polymer compositions according to claim 1, characterized in that the dosage of the polymer solution and the polymer crosslinker into the well is controlled by a control system and is simultaneously fed to the receiving line of the injection pump, where it is mixed with process water.