RU103801U1 - OIL AND GAS HORIZONTAL Sump - Google Patents

Abstract

 An oil and gas horizontal sump containing external and internal flow distributors and perforated nozzles for water and oil outflow, fittings for connecting flow distributors, fittings for outlet of water, prepared oil and gas, fittings for liquid level, pressure and temperature sensors, fittings for safety valves, drainage fitting, manhole, characterized in that the internal flow distributor is made in the form of a series of pipe wiring dispersed over the working plane, at the ends of which s conical cassette diffusers arranged in rows parallel to the horizontal axis of the sump.

Description

The utility model relates to the oil industry and can be used in open and closed single-pipe systems for collecting oil, gas and water in the fields for deep oil preparation.

A device is known for a three-phase separator comprising a housing with an inlet pipe for inputting a gas-oil mixture and output pipes for outputting gas, water and oil, a hydrocyclone for preliminary oil processing with inlet and outlet upper and lower pipes, a perforated tubular distributor for introducing a gas-oil mixture placed in an emulsion housing a layer associated with the upper outlet pipe of the hydrocyclone and having openings on the lower generatrix of the pipe, and a water outlet distributor. The hydrocyclone is connected in parallel with the gas-oil mixture supply line to the separator. The lower outlet of the hydrocyclone is equipped with a control valve, and its open end is placed in the lower part of the housing at its bottom. Above the oil outlet pipe is placed coaxial with it and with the possibility of moving along the height of a blind glass. (RF patent No. 2033237, publication date 1995.04.20)

A disadvantage of this type of apparatus is the large volume of the gas zone (35%), respectively, a significant entrainment of the droplet oil with gas due to the active process of gas evolution on the surface of the separated oil and the low productivity of the apparatus in terms of liquid.

The closest to the proposed utility model in technical essence is a sump for the treatment of oily wastewater, including a horizontal cylindrical tank, coalescing cartridge filters, boxes, a collection of purified water, mounting hatches, a manhole, nozzles for entering wastewater, oil and sludge outlet. (RF patent №2121977, publication date 1998.11.20 - prototype).

The disadvantage of the prototype is the inefficient removal of coarse, film and droplet oil from the fluid entering the cartridge coalescing filter elements, resulting in a reduced resource and reliability of the cartridge filters, due to a decrease in filtering capacity, the capacity of the sump decreases, which ultimately leads to a decrease in the efficiency of oil dehydration .

In conditions of production of waterlogged oil of great technological and economic importance is the discharge of produced reservoir water along with oil in any part of the process chain.

The objective of the utility model is to increase work efficiency by more evenly distributing the flow rates of the liquid when introduced into the sump and over its cross section in order to more fully use its volume.

The problem is solved in that in the proposed universal horizontal sump containing a cylindrical horizontal sump, the external flow distributor is made of round metal pipes and consists of two flow dividers, the internal flow distributor is made of rectangular metal pipes and consists of three flow dividers. To evenly divide the flow of the process fluid, the flow dividers are constantly bifurcated to conical cassette diffusers. The presence of conical cassette diffusers allows you to give the necessary dynamic characteristics of the fluid flow. Perforated nozzles for discharging water and prepared oil in order to prevent the formation of depression funnels are made in the form of pipes with slotted holes along the entire generatrix; they have two fittings for discharging settled water and prepared oil.

This technical solution allows for a uniform flow of oil into the sump, due to the uniform distribution of the fluid flow in the dividers. The liquid flow divider into equal parts provides uniform loading of parallel connected conical cassette diffusers.

Figure 1 - shows the external principal view of the universal horizontal sedimentation tank.

Figure 2 - arrangement of internal distributors universal horizontal sump.

Universal horizontal sump, includes a cylindrical horizontal sump (1), an external flow distributor (2), an internal flow distributor (3), conical cassette diffusers (4), a perforated pipe for water outlet (5), a perforated pipe for oil outlet (6) , fitting for water outlet (7), fitting for outputting prepared oil (8), fitting for gas outlet (9), fitting for drainage (10), manhole (11).

Universal horizontal sump works as follows.

The gas-liquid mixture (GHS) through an external flow distributor (2) enters the internal flow distributor (3). Further, the GHS passes through the conical cassette diffusers (4) located in rows parallel to the horizontal axis of the cylindrical horizontal settler (1) and, under the action of the flow, is carried out into the cylindrical horizontal settler (1). In a cylindrical horizontal sump (1), the GHS is divided into gas, oil and water. Gas is collected in the upper part of the cylindrical horizontal settler and is discharged through the gas outlet (9), water occupies the lower part of the cylindrical horizontal settler and moves to the perforated nozzle for water outlet (5). Sedimentary sludge is drained through the drainage nozzle (10). The separation of oil from water mainly occurs in the vertical planes of the cylindrical horizontal sump, the separated oil occupies the upper part of the perforated pipe for oil extraction (6) of the cylindrical horizontal sump (1), from where oil is transported further through the pipeline through the oil collection system. Water from the bottom of the cylindrical horizontal sump through the nozzle for water outlet (7) is fed into a water seal (not shown in Fig. 1). The height of the water overflow point in the water seal is coordinated with the water level in the cylindrical horizontal sump and set below the level of the oil overflow point by an amount that is determined by the quality requirements for the water discharged from the sump. The smaller this value, the higher the water quality in terms of oil content.

The use of a universal horizontal sedimentation tank allows for the involvement of the entire volume of a cylindrical horizontal sedimentation tank, the separation of water from oil and gas occurs in the entire space of the apparatus, the high efficiency of small-sized sedimentation tanks, the reliability and productivity of the preliminary water discharge installation increases.

The use of the inventive universal horizontal sedimentation tank will allow a more uniform distribution of fluid flow rates when introduced into the sump, which will significantly increase the efficiency of the sump.

Claims (1)

An oil and gas horizontal sump containing external and internal flow distributors and perforated nozzles for water and oil outflow, fittings for connecting flow distributors, fittings for outlet of water, prepared oil and gas, fittings for liquid level, pressure and temperature sensors, fittings for safety valves, drainage fitting, manhole, characterized in that the internal flow distributor is made in the form of a series of pipe wiring dispersed over the working plane, at the ends of which s conical cassette diffusers arranged in rows parallel to the horizontal axis of the sump.