RU110657U1 - FILTER BLOCK FOR VEHICLE PRESSURE SUPPORT SYSTEMS - Google Patents

Abstract

 1. The filter block for reservoir pressure maintenance systems for purification of mechanical impurities of the process fluid before injection into the well of the reservoir pressure maintenance system during oil production contains two tubular collectors with nozzles for supplying and discharging fluids: a collector-distributor and a collector-collector, between which are installed in parallel slotted tube filters, each of which includes a cylindrical casing connected to the nozzles of one and the other of the indicated collectors, inside of which is placed perforated pipe with holes along the entire length for the passage of fluid, on which a filter element is worn and fixed with a plug, characterized in that the filter casing is horizontal and connected using flange assemblies to the manifold-distributor nozzle and to the coupling mounted on the manifold nozzle collector, free manifold nozzles are equipped with removable plugs, and the filter element is made of polished V-shaped wire profile. ! 2. The filter unit according to claim 1, characterized in that the filter element is made of polished trapezoidal stainless wire with a cross section of 1.5 × 1.5 mm.

Description

1. The technical field

A useful model is a block of filters for reservoir pressure maintenance systems (water treatment filter type FVP) is used to clean the process fluid from mechanical impurities before injecting reservoir pressure maintenance systems during oil production. The liquid is cleaned to protect the surfaces of the blades and the housing of the injection pump of the water injection system into wells to maintain reservoir pressure from wear, and to preserve the throughput of oil reservoirs.

2. The level of technology

Currently, the water used in the reservoir pressure maintenance system (RPM system) is cleaned of impurities by primitive screen filters installed at the end of the receiving pipeline. The filtering fineness of such filters is 1 mm. The resistance of the mesh filters is not great due to the small receiving area of the filter.

Known analogues: FILTER BLOCK FOR SEA WATER PURIFICATION FROM WEIGHTED SUBSTANCES AND OIL ON THE OIL AND TUBE PLATFORM RU 48513 U1;

It is known RU 2367500 MODULAR DEVICE FOR WATER TREATMENT;

Known three section filter sump for wastewater;

FR2920317 A system located at the outlet of a sump for filtering wastewater, including horizontally or quasi-horizontally tubular cartridges through which wastewater is passed along the longitudinal axes.

The closest analogue of the claimed utility model is the FILTER BLOCK FOR SEA WATER PURIFICATION FROM WEIGHTED SUBSTANCES AND OIL ON THE OIL AND PETROLEUM PLATFORM RU 48513U1-

The filter unit for purifying seawater from suspended solids and oil on an oil drilling platform includes a number of cylindrical housings hydraulically interconnected with removable covers and water inlet and outlet pipes, in which vertical filter elements are connected at one end to the pipe baffle. 5 pieces. in the form of an oval-shaped wire wound spirally wound onto a perforated corrugated pipe, additional grooves are provided in the filter elements to ensure filtration. There is a system of automatic washing of filters in case of clogging.

The design flaws of this unit.

- The filter elements are made of oval cross-section wire, which is easily clogged with mechanical impurities. The oval wire filter design used does not have a self-cleaning function

- the filter elements are made vertical, which contributes to the rapid filling of the filter housing with impurities. The deposited impurities quickly overlap the surface of the filter and therefore frequent washing of the filters is required.

- For washing the filter housing from precipitation, an additional pumping system for washing is required.

- The design of the unit is very cumbersome and cannot be moved by car to the well and pump for pumping water into the reservoir.

The objective of the utility model of the filter block claimed for registration is to filter the process fluid pumped in large volumes into the wells from mechanical impurities and to ensure quick filter washing from precipitation, to ensure easy replacement of filter elements, and to ensure the compact size of the filter.

3. Disclosure of utility model

To achieve the claimed technical result provided by the utility model, which consists in providing quick filter washing from precipitation and easy replacement of filter elements, in the filter unit for reservoir pressure maintenance systems for purification of mechanical impurities of the process fluid before injection of the reservoir pressure maintenance system during oil production, contains two tubular collectors with nozzles for supplying and discharging liquid: a collector-distributor and a collector-collector, between which parallel installed slotted filters, each of which includes a cylindrical casing connected to the nozzles of one and the other of the indicated collectors, inside which a perforated pipe with holes along the entire length for the passage of fluid is placed, on which the filter element is worn and fixed with a plug, the filter casing is connected using flange assemblies to the manifold of the manifold-distributor and to the coupling mounted on the manifold of the collector-collector, and the free manifold nozzles are provided are removable caps.

In addition, the filter elements are made of polished, V-shaped wire profile, stainless steel, which has minimal hydraulic loss and self-cleaning function, and precipitation accumulators are built into cylindrical casings, which ensures the deposition of impurities on the surface of the casing, and not on the surface of the filter element. The cross section of the wire of the V-shaped profile 1.5 × 1.5 mm provides the highest filter throughput, minimal hydraulic resistance, the necessary rigidity of the filter element design and the possibility of manufacturing the filter using contact electric welding of parts.

Thus, the backwash of the filter unit is ensured by a reverse fluid flow, by only re-mounting the flanges and changing the flow direction, an additional pumping system for flushing is not required.

As a result, the design of this unit has a large throughput, and is also easily transported by car to the pump unit for pumping process fluid into the reservoir.

The system for maintaining the reservoir pressure of oil-producing enterprises provides for the injection of significant amounts of aqueous solutions of chemical reagents (process fluids) into oil-containing formations using high-pressure and high-performance pumping units. A significant amount of water is taken for these purposes from large rivers and lakes. The mechanical composition of process fluids is high. The presence of mechanical impurities leads to wear of pump parts, sharply reduces the service life of injection pumps and reduces the permeability of oil reservoirs. Therefore, process fluids must undergo mandatory purification from mechanical impurities. The reagents that make up the process fluids are chemically aggressive, and require the use of special materials for the manufacture of tanks, pipelines, fittings.

The proposed filter unit for reservoir pressure maintenance systems is used to clean the process fluid from mechanical impurities before pumping reservoir pressure maintenance systems during oil production. The liquid is cleaned to protect the surfaces of the blades and the housing of the injection pump of the water injection system into wells to maintain reservoir pressure from wear, and to preserve the throughput of oil reservoirs. The filtering elements of the frame-slot type block have a high throughput of up to 2000 cubic meters per day per 1 square meter of the filtering surface. The material of the filter element is high-corrosion-resistant steel type 12X18H10T provides long-term operation of the unit with aggressive process fluids.

4. A brief description of the drawings.

The filter block consists of two tubular collectors with nozzles for supplying and discharging liquid: distribution (collector-distributor) item 1 and reception (collector-collector) item 2, between which parallel slotted filters are installed. At the ends of the collectors, on free nozzles, the transportation plugs of item 3 are mounted, which are replaced with technological plugs when connecting pressure, receiving, flushing pipelines. To the collectors using the flanges of clause 11, and the couplings of clause 4, clause 5, the cylindrical casings of clause 7 are attached to collect impurities. Each of the mentioned filters includes a corresponding cylindrical casing of claim 7 connected to the nozzles of one and the other collectors, perforated pipes of claim 8 with holes along the entire length for the passage of the process fluid, mounted inside the casings of claim 7. The pipes are equipped with filter elements of the wire-frame type of item 9. The filter element is fixed on the pipe with the stopper of item 10. The block has two places, closed by threaded technological plugs of clause 6, for mounting additional filters of clause 12 when operating pumping units with a capacity of more than 250 cubic / day. The filter cover is connected using flange assemblies to the manifold of the manifold-distributor and to the coupling mounted on the manifold of the manifold, and the loose manifolds are equipped with removable plugs. The filter element is made of polished, V-shaped wire profile with a cross section of 1.5 × 1.5 mm., And filter elements are built into the cylindrical casings.

5. Implementation of a utility model

The proposed filter unit is used to clean from mechanical impurities of the process fluid before injection into the well of the system for maintaining reservoir pressure during oil production. The liquid is cleaned to protect the surfaces of the blades and the housing of the injection pump of the water injection system into wells to maintain reservoir pressure from wear, and to preserve the throughput of oil reservoirs. The filter block is installed on the pipeline of the reservoir pressure maintenance system at the input line of the pump for supplying fluid to the well. The liquid is fed through the intake pipe to the manifold, passes through horizontal slotted filters parallel to the perforated pipes, mechanical impurities are retained on their surface and deposited in the filter housing, the purified liquid flows from the filters to the collector and then to the inlet of the injection pump. As the filter elements become dirty and the housings are filled with impurities, they are flushed with a liquid stream, which is ensured by switching the direction of the liquid stream at the place of operation. The filter fineness is determined by the size of the slit of the filter elements (within 100-300 microns). Filter capacity up to 250 cubic meters of liquid per day.

Claims (2)

1. The filter block for reservoir pressure maintenance systems for purification of mechanical impurities of the process fluid before injection into the well of the reservoir pressure maintenance system during oil production contains two tubular collectors with nozzles for supplying and discharging fluids: a collector-distributor and a collector-collector, between which are installed in parallel slotted tube filters, each of which includes a cylindrical casing connected to the nozzles of one and the other of the indicated collectors, inside of which is placed perforated pipe with holes along the entire length for the passage of fluid, on which a filter element is worn and fixed with a plug, characterized in that the filter casing is horizontal and connected using flange assemblies to the manifold-distributor nozzle and to the coupling mounted on the manifold nozzle collector, free manifold nozzles are equipped with removable plugs, and the filter element is made of polished V-shaped wire profile. 2. The filter unit according to claim 1, characterized in that the filter element is made of polished trapezoidal stainless wire with a cross section of 1.5 × 1.5 mm.