RU14459U1 - MOBILE COMPLEX OF EQUIPMENT FOR PREPARATION AND DOWNLOADING TO A WELL OF GAS-LIQUID TECHNOLOGICAL MIXTURES - Google Patents

Abstract

MOBILE EQUIPMENT FOR PREPARATION and

PUMPING INTO A GAS WELL “VIRTUAL TECHNOLOGICAL MIXTURES.

The utility model relates to the field of construction and operation of oil and gas wells and can be used to perform a number of technological downhole operations related to the injection of water, gas-liquid mixtures, polymer and biopolymer compositions, etc.

A mobile set of equipment for the preparation and injection into the well of gas-liquid technological mixtures contains a pumping unit and a pump-compressor booster unit, including a measuring tank and a feed pump. Each of these units is connected by a suction line with a water source (for example, a field conduit), and a discharge line with a wellhead. A characteristic feature of the equipment complex is that it is additionally equipped with a unit for preparing polymer and biopolymer solutions, including a water supply unit connected to each other and a unit for preparing a concentrated polymer solution, as well as a unit for supplying a crosslinker. At the same time, the water supply unit is connected via separate pipelines to the measuring tank of the booster unit and to the suction line of the pump unit. The concentrated solution preparation unit is in communication with the suction line of the pump unit, and the stapler supply unit is also connected with a separate pipeline to the feed pump of the booster unit.

This implementation of the complex provides the expansion of its technological capabilities. 1.

MKI F04B 23/04 F04B 35/00 E 21V 43/22

Description

ffiiffi nil) 11 / ((1Ш1, f., (к г н) MOBILE ORGANIZING COMPLEX FOR PREPARING AND PUMPING GASES OF VICTIFIC TECHNOLOGICAL Utility model relates to the field of construction and operation of oil and gas wells and, in particular, can be used for a number of technological downhole operations related to the injection of water, gas-liquid mixtures, polymer and biopolymer compositions into the well, etc. (call and intensification of fluid inflow in oil and gas wells, opening of reservoirs, processing of products formations for increasing oil recovery, etc.) Methods and equipment for preparing and injecting various gas-liquid technological mixtures into a well for these purposes have been used in the world oil and gas industry for more than thirty years, for example, methods for increasing oil recovery associated with injection into formation of various technological fluids, gas-liquid mixtures and gases are described in the book of M. L. Surgucheva "Secondary and tertiary methods of increasing oil recovery, M.," Nedra, 1985. p. 116-123 A device for pumping and aeration of flushing fluid is known mainly during the development of oil and gas-liquid wells, performed according to a.ev USSR No. 142150. Cl. F04B 23/06, 1961. This device contains a piston pump, a booster pump and an external source of gas under pressure. Another device (see a, St. USSR No. 714 044, class P 04B 23/10, 1980) for pumping a gas-liquid mixture by a piston pump includes an additional booster chamber), a cylindrical chamber into the cavity of which a tubular collector is inserted through the end of the inlet valve and connected to a source of azo-liquid mixture or gas. These devices have a number of significant residuals (low manufacturing, difficulty in maintenance and repair, MKI F04B 23/04 F04B 35/00 E 21B 42/32 MIXES,

narrow technological capabilities, whipping up only liquids and a hip-liquid mixture and a number of others).

For the prototype of the proposed technical p., A set of equipment may be accepted, including a self-propelled booster pump and compressor unit UB-9-125x25KD-1, developed and manufactured by the domestic company ZAO NPAK RANKO and implementing the patent of the Russian Federation. No. 714044 (see Passport and technical description “Installation of a booster pump and compressor UB-9-125x25KD-1 ZZUNBOO.OOO.PS. Moscow. 1996) and a self-propelled pump installation UNB-155x25. Issued by the same company. (See Passport“ Installation pump UNB -1-125 x 63/1 UNB OOO.OO.OOOPS. Moscow 1996)

Such a set of equipment ensures the injection into the well of gas-liquid mixtures, foam and various process fluids during a number of technological operations of construction, operation and overhaul of wells for oil, gas, water, etc.

A disadvantage of the known complex is its insufficiently wide technological capabilities. In particular, such a complex is not adapted to the preparation and injection into the well of polymer solutions, which provide an increase in the drained (working) thickness of the formation (see the source above for a book by M.L. Surgukheva, p. 118), thereby increasing oil recovery

The utility model is delivered. the task of expanding the technological capabilities of a complex of equipment for the preparation and injection of technological fluids into a well is to ensure the preparation and injection of polymer and biopolymer solutions (e.g., polymer systems based on a suspension of swelling polymers, based on water-soluble polymers, polyacrylamides, etc.) and a crosslinker of a substance that turns a polymer solution into a gel in the reservoir (such substances, for example, can be liquid chromate acetate, sodium dichromate or potassium dichromate). This treatment of production and injection wells allows you to create additional resistances in the reservoir for filtering the oil phase. The task assignment is ensured by the fact that the mobile complex of equipment for the preparation and injection of technological fluids into the well contains a pumping unit,

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including a measuring tank and nutrient pumps. Each of these units is connected by a suction line to a water source (for example, a water supply pipe), and a discharge line to a wellhead. At the same time, the equipment complex is additionally equipped with a polymer solution preparation unit, including a water supply unit and a concentrated preparation unit interconnected

polymer solution, as well as the stapler feed unit. In this case, the water supply unit is connected via separate pipelines to the measuring tank of the booster unit and the suction line of the pump unit. The concentrated polymer solution preparation unit is connected to the suction line of the pump unit, and the stapler supply unit, also by a separate pipeline, is connected to the feed pump of the booster unit. This embodiment of the complex of equipment for the preparation and injection of technological fluids into the well allows expanding its technological capabilities by providing the preparation and injection of polymer and biopolymer solutions into the well (it is used in some cases to increase oil recovery).

The drawing shows a schematic diagram of a set of equipment for the preparation and injection of technological fluids into a well in accordance with this application.

A set of equipment for the preparation and injection of technological fluids into a well (see the attached drawing) includes pump unit 1. As a pump unit, a pump unit UNB-155x25 can be used on the KrAZ-65101-100 chassis, manufactured by NPAK RANKO CJSC. (see Passport "Installation pump UNB-1-125x61 / 1 UNB -OO.OO.OOOPS., Moscow 1996), including a plunger pump 2 and a measuring tank 3 Since this installation is widely known, it is not described in detail in this application. Installation 1 has a suction line 4 and a discharge line 5 with a check valve 41 connected to the wellhead 6. The source of water for the pump installation may be a field conduit 7. In addition, the inventive equipment complex includes a compressor booster unit 8 (hereinafter, the booster unit ), also widely known in the practice of injecting process fluids into a well. As such a installation, the UB-9125x 25 KD-1 booster pump and compressor unit mounted on uiaccn KrAZ-6510 -100 and including a booster pump 9, a feed pump 10, a metering pump for supplying solutions of PAV-11, compressor 12 and measuring tank 13 equipped with a level} 1 meter (not shown). This installation is also not described in detail in this application, since it is manufactured by RAKO NPAK CJSC (see Passport and Technical Description Installation and Booster Pump and Compressor 99-125х25КД-1 33 UNB-00.00.000 PS Moscow 1996).

communicated by pipeline 16 w with suction line 4 of pump unit 1. Pressure line 17 with check valve 41 of booster unit 8 communicated with wellhead 6. The discharge lines of pump unit 1 and booster unit 8-5 and 17 are interconnected and equipped with a static mixer (swirler flow) 18.

The inventive complex of equipment for the preparation and injection into the wells of process fluids is additionally equipped with a unit for preparing polymer solutions 19. Unit 19 can be mounted on a trailer and includes a water supply unit 20, consisting of metering pumps 21 and booster pump 22 Through pipelines 16,23 and 24 to pumps 21 Ш2 can enter water from the measuring tank 13.

In addition, block 19 includes a unit for preparing a concentrated polymer solution 25. Unit 25 consists of a warehouse 26, from where the polymer can be loaded into a hopper equipped with a vibrator and a load cell (not shown), and through the airlock feeder (not shown) can enter the ejector jet mixer 27, where water from node 20 can be supplied through pipeline 28. Finished concentrated polymer solution from tank 29 can be supplied through pipeline 30 through pump block 31 to suction pipe 4 of pump unit 1. Block 19 includes akzhe staple feed assembly 32, conduit 33 communicated stocked valve 54 from the water supply unit 20. The assembly 32 includes a reservoir 34 and metering pumps 35. It communicates conduit 36 via conduit 40 with

pipeline 37, which in turn is connected to the feed pump 10 of the booster installation 8, the supply of the stapler (there is a pipe 52 with

a valve 53 for supplying the finished product from an external source.

BLOCK 25 is connected by a pipeline 39 with a pipeline 40, which in turn is connected with the suction line 4 of the installation 1 and the suction pipe 37 of the booster installation 8.

Gas can be supplied to the booster installation either by compressor 12, or from an external source via pipeline 38.

The operation of the described mobile complex is as follows.

In the mode of pumping technological fluids into the well, only the pumping unit 1 works, sucking in the liquid from the field supply pipe 7, through the throttle device 15, line 14, the measuring tank 13 of the booster unit 8 and then through lines 16 and 4 and pumping it through line 5 and a static mixer 18 into the well 6. Pipelines 16 and 4 should be communicated either through block 19, or bypassing it with a separate pipeline (not shown in FIG.).

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only the booster unit 8 operates in the injection mode of the gas-liquid mixture into the well, it draws in liquid from the measuring tank 13 (along line 49, the valves 51 and 45 are open, the valves 50,44,46,47 are closed) by the pump 10 and feeding it into the booster chamber (not shown)

At the same time, gas is supplied to the latter from the compressor 12 or from an independent external source through the pipeline 38. The gas-liquid mixture is pumped through the pipe 17 through a static mixer 18 into the well 6. In this case, if necessary, surfactants are added to the gas-liquid mixture in the liquid .m - form can be fed by a metering pump 11 into the pipe 17, bypassing the booster pump 9,

In addition to the described mode, booster unit 8 can be operated in pump mode: liquid is supplied from an external source (line shown) and through line 49 it is supplied to booster pump 9 (gate valves 50 MJ44 are open and gate valves 43,45,46,47,51 are closed).

In this case, the feed pump 10, the metering pump 11, the compressor 12 are turned off. Next, the fluid is supplied through a pipe 17 with a check valve 41 through the injection line 5 through a static mixer 18 to the wellhead 6.

In the mode of preparation and injection of polymer solutions into the well, a pumping unit 1, a booster unit 8, and a unit for preparing a polymer solution 19 are operating. Water from a field conduit 7 through a throttle device 15 through a pipe 14 enters a measuring tank 13 of a booster unit 8, from where it is sucked through a pipe 16 pipelines 23 and 24 with the help of the water supply unit 20. Then, using the metering pumps 21, water is supplied through the pipe 28 to the ejector jet mixer 27, where it is metered from the warehouse and hopper 26 dry polymer through a lock feeder with a cantilever screw (not shown in Fig.).

From the container 29, the concentrated polymer solution is sucked in through the pipeline 30 by the pump unit 31 and through the pipe 39 is supplied to the pipe 40, where it is diluted with water supplied by the pump 22, which the latter is sucked in via the pipe 24 from the pipe 16.

At the same time, a stapler is fed into metering pipe 40 through pipe 36 by metering pumps 35. From the pipeline 40, the crosslinked polymer solution is drawn in through the pipe 4 by the pump 2 and fed to the discharge line 5.

At the same time, gas is supplied to the booster chamber from the compressor 12 or from an independent external source through a pipe 38 with a non-return valve 42 and a gate valve 43. Next, a gas-liquid polymer mixture is supplied by a booster pump 9 to a pipe 5 through a pipe 17 with a non-return valve 41 and is mixed with the polymer solution through pipeline 5, through a static mixer 18 to the wellhead 6. In this case, the metering pump 11 of the booster unit 8 is turned off

Possible operation of the booster unit 8 in the pump mode during the injection of polymer solutions. This mode is similar to the above-described mode of preparation and injection into the well of polymer solutions with the difference that the polymer solution from line 37 is sent to booster pump 9 through line 48 and then fed through line 17 to injection line 5 and then through a static mixer 18 to the wellhead 6 At the same time, the valve 46 is opened, the valves 44,45,47,50,51 are closed and the feed pump 10, the metering pump 11, the compressor 12 are turned off

This complex can also be used in polymer flooding. This mode of operation is similar to the mode of injection of polymer solutions, when pump unit 1, booster unit 8 (in pump mode) and the unit for preparing polymer solutions 19 (stapler feed pumps are off) are operating.

It is also possible to operate the complex during the injection of biopolymer solutions.

Authors:

/, l 1 /

In N, Martynov

L.S. Diamond

| 1 V.I. Kurakin

ffcM. A.A. Zarov ..R.G. Karlov

A.:,

V.g.Drutsky D.I. Tsygankov

Claims (1)

A mobile set of equipment for preparing and injecting gas-liquid technological mixtures into a well, comprising a pumping unit and including a metering tank and a feed pump, a booster unit, each of which is connected by a suction line to a water source (for example, a water supply pipe), and a discharge line to wellhead, characterized in that it is additionally equipped with a unit for preparing polymer and biopolymer solutions, including a water supply unit and a unit for A concentrated polymer solution, as well as a stapler supply unit, the water supply unit being connected via separate pipelines to the measuring tank of the booster unit and the suction line of the pump unit, the concentrated polymer solution preparation unit is communicated with the suction line of the pump unit, and the stapler supply unit is also a separate pipeline - communicated with the booster feed pump.