RU9887U1 - MOBILE PREPARATION AND PUMPING INSTALLATION IN A WELL OF POLYMER COMPOSITIONS - Google Patents

Abstract

1. A mobile unit for the preparation and injection into the well of polymer compositions having a hopper with a screw feeder, a mixer tank, a polymer stapler loading and dosing system, a process water pipeline with mounted flowmeter, a high pressure regulating valve, an inkjet apparatus and a check valve, and a discharge electric pump, ventilation and electric heating system and control panel, characterized in that the installation equipment is mounted in a van on a caravan chassis in one line continuous line. 2. Installation according to claim 1, characterized in that the dosing of the flow rate of dry polymer with a screw feeder is made by an adjustable electric drive, and the dosing of the flow rate of a polymer stapler is done by a dosing plunger pump. Installation according to claim 1, characterized in that for the absorption and wetting of dry polymer with water, a jet device of its own design is used. Installation according to claim 1, characterized in that for mixing and partial dissolution of the polymer with water, a mixer tank is used, which allows the use of water energy. Installation according to claim 1, characterized in that for pumping mixed and partially prepared polymer compositions into the well, a three-plunger high-pressure electric pump is used, which is installed directly in the van. Installation according to claim 1, characterized in that a partial dissolution of the previously wetted polymer is carried out in the mixer tank.

Description

USEFUL MODEL

“Mobile installation for preparation and injection into the well of full-size units

The utility model relates to equipment for the oil industry and can be used for the preparation of polymer and crosslinker solutions with their subsequent injection into the well in order to increase oil recovery.

A device for the continuous production of solutions and compositions, chemicals, containing a hopper of a powder substance with a tap into the mixer; container with tap into the mixer; capacity with partitions; activator pipe with swirls; hydrodynamic chamber and flow separator; liquid gas ejector; additional reagent tanks and a control panel indoors, having all the necessary conditions to ensure continuous operation, maintenance and movement. (1)

Such a device 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 there is no exact dosage of the components of the solutions, and a mobile pump unit (for example, TsA-320) is used to pump the prepared solution into the formation. The purpose of this utility model is to create a mobile unit for chemical treatment of oil wells. deposits of polymer compositions alternately over a large area.

This goal is achieved by the fact that the installation equipment is mounted in a van on a chassis (for example, a trailer to a tractor or a car) and allows continuous preparation of partially dissolved polymer compositions at the wellhead and their injection into

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formation in any quantities with a dosage of a polymer crosslinker to form a stable gel in the nast.

For wetting and partial dissolution, process water is used from the reservoir pressure maintenance system of the oil field, wetting and partial dissolution of the polymer occurs continuously, with a continuous dosage of a certain amount of polymer crosslinker. Simultaneously with the wetting and partial dissolution of the polymer solution, polymer compositions are injected into the formation.

The arrangement of the equipment in the van was carried out in accordance with the sequence of the technological process for the preparation of polymer compositions and their injection into the reservoir.

Figure 1 shows a view of a mobile installation for the preparation and injection of polymer compositions into a well, containing:

-container 1;

chassis 2;

-bunker with screw feeder 3;

-jet apparatus 4;

-Capacity mixer V-2 m 5;

-pressure pump with electric drive 6;

-system of loading and batching of polymer crosslinker 7, including dosing plunger pumps - 2 pcs, capacity, ohm for polymer crosslinker and filter;

-pipeline for technical water 8, on which a flowmeter 9 is mounted, a high pressure regulator valve 10, an inkjet apparatus 4, a non-return valve And;

The preparation and injection into the well of partially dissolved polymer compositions takes place as follows: process water from the gas supply system through the process water pipe 8 under pressure passes through the primary device of the flow meter 9, a high pressure valve 10 (which is also a flow regulator) to the jet device 4,

Dosage and supply of dry polymer to the inlet of the inkjet apparatus is carried out from the hopper by a screw feeder 3 with an adjustable electric drive.

The design of the inkjet apparatus (figure 2) allows the absorption of dry polymer and its wetting with water. The suction effect is achieved due to the creation of a jet rarefaction apparatus in the lower part of the tee 1. The dry polymer granules are wetted with water at the outlet of the nozzle 4 with an inner diameter selected so that the water pressure at the inlet of the jet apparatus (sleeve 3) is sufficient for the effective absorption and wetting of the dry polymer. The wetted polymer through the sleeve 2 of the jet apparatus in the flow of industrial water enters a vertical cylindrical tank - mixer through a pipe cut into the bottom part tangentially under residual pressure.

In the tank-mixer 5 (Fig. 1), under the action of the centrifugal force of the swirling jet, additional mixing with water and partial dissolution of the polymer, as well as the maintenance of the polymer microparticles in suspension are carried out.

Next, the polymer solution due to hydrostatic pressure enters the suction line of the injection pump 6 and is pumped by the pumping unit into the well.

body 7, the discharge line of which is cut into the suction line of the discharge pump.

The preparation of the polymer solution and its pumping are performed simultaneously and continuously until the specified volume of pumping it into the well is reached. The equipment used (a metering plunger pump and a screw feeder with an adjustable drive) allows the components to be dosed with sufficient accuracy to prepare polymer compositions; operation modes are controlled from a single control panel 12.

The ventilation and electrical heating systems 13 used in the installation allow it to be used in oil fields year-round. The operability and reliability of the installation is confirmed by industrial testing of a prototype.

References to analog: 1. Device for the continuous production of solutions and compositions

chemical reagents.

Batrakov A.V. Certificate No. 4925 of September 16, 1997 for a utility model.

Authors:

Manyrin, Vyacheslav Nikolaevich Dosov Alexander Nikolaevich Savelyev Alexander Georgievich Gaisin Ravil Fatykhovich King Vladimir Vasilievich

Claims (6)

1. A mobile unit for the preparation and injection into the well of polymer compositions having a hopper with a screw feeder, a mixer tank, a polymer stapler loading and dosing system, a process water pipeline with mounted flowmeter, a high pressure regulating valve, an inkjet apparatus and a check valve, and a discharge electric pump, ventilation and electric heating system and control panel, characterized in that the installation equipment is mounted in a van on a caravan chassis in one line continuous line.  2. Installation according to claim 1, characterized in that the dosing of the flow rate of dry polymer with a screw feeder is made by an adjustable electric drive, and the dosing of the flow rate of a polymer stapler is done by a dosing plunger pump.  3. Installation according to claim 1, characterized in that for the absorption and wetting of the dry polymer with water, a jet device of its own design is used.  4. Installation according to claim 1, characterized in that for mixing and partial dissolution of the polymer with water, a mixer tank is used, which allows the use of water energy.  5. Installation according to claim 1, characterized in that for pumping mixed and partially prepared polymer compositions into the well, a three-plunger high-pressure electric pump is used, which is installed directly in the van. 6. Installation according to claim 1, characterized in that in the mixing tank a partial dissolution of the previously wetted polymer is carried out.