SU1636006A1 - Device for preliminary dehydration of highly flooded oil with refining of stratal water - Google Patents

Abstract

The invention can be used in oil fields for preliminary preparation of highly watered oils and simultaneous purification of finished reservoir waters. The purpose of the invention is to increase efficiency in the operation of the installation. The installation includes a pressure hydrocyclone 1 with inlet 2 and a diverter top 3 and bottom 4 nozzles and a pressure horizontal sump 5, divided by a vertical partition 6 into an inlet compartment 7 with a perforated tubular distributor 8 and a discharge pipe 9 and an outlet compartment 10 in which pipes are placed The first perforated distributor 11 connected to the outlet branch pipe of the inlet compartment In the output compartment 10 parallel to the distributor 1 1 a second tubular perforated distributor 13 is installed, and it is installed in the immediate vicinity of the upper wall of the sump 5o In the output compartment below the two distributors there is an additional distributor 26 connected with the oil tank of the input compartment 2 or "(/

Description

Dycically discharged through an oil tank 19 The purified water is discharged through a collector 12.

Mechanical impurities deposited in compartments 7, 10 and 16 are periodically drained through pipes 20 - 22 "

The application of the proposed plant allows improving the purification of formation water during oil dehydration due to the fact that dehydrated oil from the inlet compartment is not withdrawn from the apparatus and is fed into a tubular flow distributor placed in the outlet compartment at the level of the lower section of the partition separating the outlet compartment from the compartment final settling, but below the dispensers available in the output compartment, as a result of which the dehydrated oil leaves the additional distributor in the form of droplets formed which rise and merge with the oil accumulated in the compartment. At the same time, these drops themselves are centers of coalescence and flotation agents, therefore, when they float, they absorb the small particles of oil clearing the water from the residual emulsified oil.

In addition, oil droplets that float on a large area of the longitudinal section of the output compartment create a backpressure effect that prevents small particles of oil from being carried away from the flow from the first two flow distributors in the upper part of the flow. Continuous injection

oil dehydration, plant efficiency in general

invention formula

An installation for preliminary dewatering of high-watered oil with reservoir water purification, including a hydrocyclone for pretreatment of oil with supply and discharge of the upper and lower branch pipe. kami, a settling tank divided by a partition into an entrance compartment with a discharge

a pipe in which the distributor is located, connected to the upper outlet pipe of a hydrocyclone, and an outlet compartment in which a tubular perforated upper valve is placed one above the other, connected to the outlet pipe of the inlet compartment, and a lower valve connected to the lower outlet pipe of the hydrocyclone A vertical septum placed in the output compartment, not reaching the bottom, oil collectors and a water collection, characterized in that, in order to increase the degree of purification of the produced formation water, The machine is equipped with an additional distributor connected to the sump of the inlet compartment and located in the outlet compartment below the lower distributor and

not below the cut of the vertical partition, and the upper distributor is placed under the upper wall of the settling tank equidistant to it,

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FIG. 2

Claims (1)

Claim Installation for pre-dehydration of high-water oil with the treatment of produced water, including a hydrocyclone for pre-treatment of oil with inlet and outlet upper and lower pipes. kami, a sump separated by a partition into the inlet compartment with a discharge pipe, in which a distributor is located, connected to the upper outlet pipe of the hydrocyclone, and an outlet compartment, in which one perforated upper distributor is connected one above the other, connected to the outlet pipe of the inlet compartment, and the lower distributor connected to the lower outlet branch of the hydrocyclone, the vertical one located in the outlet compartment is poured by coalescence centers and flotation agents, therefore, when floating up, they absorb darivshiesya with them small oil particles, purifying the process water from the residual emulsified oil. In addition, oil droplets emerging over a large area of the longitudinal section of the outlet compartment create a backwater effect that prevents the entrainment of small particles of oil from the interaction zone of the flows from the first two flow distributors in the upper part of the flow. Continuous spraying of the town is not profitable, it has oil tanks and a water collector, characterized in that, in order to increase the degree of purification of the separated formation water, the installation is equipped with an additional distributor connected to the oil collector of the inlet compartment and located in the outlet compartment below the lower the distributor and 55 not lower than the cut of the vertical partition, and the upper distributor is placed under the upper wall of the sump equidistant to it. ΑςΛ