SU1399585A1 - Method of piping gas-water-oil mixture - Google Patents

Abstract

The invention relates to the oil industry, in particular to the collection and preparation of well production in the fields. The invention makes it possible to improve the quality of a clean, amoe water and reduce material costs for subsequent operations to purify water by mixing the aqueous phase, forming a jet stream, breaking the flow continuity and releasing gas from the liquid. Gasodonodonft to the mixture is transported through the pipeline to the terminal phase divider (CDR), where it is stratified into gas, oil and water. Gas and oil through pipelines and, accordingly, under the action of a pressure differential between KDF and a separator enters a sealed compartment formed by a partition and walls of the separator. From the compartment, gas is led through the pipeline to the gas processing plant, and oil via the pipeline to the second separation stage. The water phase from KDF is transported to the separator via a pipeline, at the end of which a fitting element is installed. Oil accumulates on the surface of the water and is led through the pipeline to the pipeline, and then to the second stage of separation, and water enters the pipeline. i

Description

Sa: her her

O1

but

ate

The invention relates to the oil industry, in particular to the collection and preparation of production of oil wells in the fields.

The aim of the invention is to improve the quality of the treated water and reduce the material costs of subsequent water treatment operations due to the intensive mixing of the aqueous phase, the formation of jet streams, the discontinuity of the flow and the release of gas from the liquid.

The essence of the method is as follows.

Gasodonodoft to the mixture enters the terminal phase divider (KDF), which ensures the separation of the mixture into separate phases, which are then selected in separate streams. Moreover, the aqueous phase with an oil content of 43-50 mg / l is additionally mixed by the pipeline of the estimated length and diameter at a speed of 7-20 m / s for 0.3-3 seconds before being fed into the gravitational separation apparatus.

Example. The gas-water-neft mixture with a water content of 76% with gas factor 42 was treated with a “Prokhinor” type demulsifier with a rate of 30 g / t and transported in a turbulent mode (Re 50000) through a collecting pipeline to the terminal phase divider where it was stratified into three phases — gas, oil water Gas and oil under the action of pressure drop between KDF and separator, equal to

0.24 kgf / cm, entered the sealed compartment formed by the partition and the walls of the separator. From the compartment, the gas was diverted by pipeline to the gas processing plant.

the plant, and oil through the pipeline - to the second stage of separation. The aqueous phase with a density of 1019 kg / m with an oil content of 43 mg / l from KDF was transported to a separator via a pipeline, in the final section of which a fitting element is located.

The method allows to obtain water with a residual oil content of 15–16 mg / l due to the evolution of the gas phase contained in it. This dramatically reduces

time of sludge water - 13 minutes, against 6-8 hours earlier.

Claims (1)

Invention Formula The method of transporting the gas-water mixture, including treating it with a demulsifier, creating an injection pressure and speed of movement of the gas-water-oil mixture in the end phase divider, ensuring separation of the mixture into phases, separate selection of the oil, gas and water phases and their subsequent gravitational separation, characterized in that, in order to increase the quality of the treated water and reduce the material costs of subsequent water purification operations, the water separated in the end divider of the phases is transported to the apparatus a gravitational separation at a speed of 7-20 m / s for 0.3-3 s.