SU1154311A1 - Composition for dewatering petroleum - Google Patents

Abstract

OIL DECOMPOSITION STRUCTURE on the basis of an aqueous solution of polyoxyethylene molecular weight

Description

NU

00 The invention relates to oil preparation and can be used in the petrochemical industry for dehydrating and desalting oil by treating it with aqueous solutions of polymers and surfactants. A known composition for the dehydration and desalting of oil, containing an aqueous solution of sodium oleate. Closest to the present invention is a composition for the dehydration of oil, containing an aqueous solution of polyoxyethylene. The composition may contain polyoxyethylene, molecular mass XO, 1-7) - 10 2 J. The disadvantage of the compositions is their low activity during the dehydration and desalting of oil. The purpose of the invention is to increase the activity of the two-wave activity of the composition. The aim is achieved by the fact that a composition containing an aqueous solution of polyoxyethylene with a molecular weight (1-6): 10, additionally contains sodium oleate, with the following ratio of components, May Polyoxyethylene, molecular weight (1- 6) -10 0.5-2.0 Sodium oleate. 0.05-0.1 Water Up to 100 The dehydration composition is injected into the oil emulsion stream at the temperature of the heat treatment of the oil. Example 1. For the preparation of a formulation, polyoxy ethylene (POE) grade OK-2M (TU-6-07-22-103-78) with a molecular weight of (1-6) HUCH is used. A composition is prepared containing 0.005 g (0.05 wt.%) Sodium oleate, 0.05 g (0.5 wt.%) POE and 9.945 g (99.45 wt.%) Water. Then, the prepared composition is treated with the oil of the Samotlor field of the Tyumen region with an initial mineralization of 3518 mg / l and a water content of 42 wt.%. To do this, 830 g of oil heated to 60 ° C are mixed with the composition indicated, allowed to stand for 30 minutes, cooled, and separated. The solid phase is measured, its volume is measured, and oil is analyzed for its water content according to GOST 2477-65 and its content according to GOST 10097-62. The residual water content of 0.4 wt.%, Salts 60 mg / l. Consumption of composition per active ingredient 67 g / t of oil. Example2. A formulation is prepared containing 0.0045 g (0.075 wt.%) Sodium oleate, 0.2 g (2.0 wt.%) POE and 9.793 g (97.925 wt.%) Water. The prepared solution is treated with 3 kg of oil, as in example 1. Osta-. exact water content is 0.45 wt.%, salts 75.0 mg / l. Consumption of the composition in the calculation of the active components of 67 g / t. EXAMPLE 3: 0.01 g (O, 1% by weight) of sodium oleate and 0.05 (0.5% by weight) of ESR was dissolved in 9.94 g (99.4% by weight) {water. Process 1 kg of oil as in example 1. The residual water content of 0.3 wt.% Salts 50 mg / l. Consumption of composition per active ingredient 60 g / t. EXAMPLE 4: 0.01 g (O, 1% by weight) of sodium oleate and 0.1 g (1.0% by weight) of POE are dissolved in 9.89 g (98.9% by weight a) water, the prepared solution is treated with 1.85 kg of oil, similarly. in accordance with example 1. The residual water content is 0.05 wt.%, salts 6.5 mg / l. The flow rate of the composition is 59 g / t Pr and m 5. 0.01 g (0.1% by weight) of sodium oleate and 0.2 g (2.0% by weight) of POE are dissolved in 9.79 g of water, 3.75 kg of oil are treated with the prepared solution. The residual water content, O, 2 wt.% Salts 18 mg / l. Consumption composition in the calculation. active ingredients 56 g / t. EXAMPLE 6 0.0075 g (0.0750 wt.%) Sodium oleate and 0.1 g (1.0 wt.%) Polyoxyethylene are dissolved in 9.893 g (98.925 wt.%) Of water prepared the solution is treated with 1.85 kg of oil. The residual water content is 0.07 wt.% Salts 7.2 mg / t. Consumption of 58 g / t. EXAMPLE 7 For comparison, a petroleum emulsion is treated analogously to example 1 with an aqueous solution of sodium oleate in an amount of 100 g sodium oleate per 1 ton of oil. The residual water content of 0.46 wt.%, Salts .55 mg / l. Froze Similarly, in example 1, oil is treated with a solution of polyoxyethylene molecular weight (1-6) 10 in an amount per active311543114

ny component 150 g / t. Received gives the best dehydrating active oil with a residual bone content than the well-known, that the volume of the arches is 2.8 May.%, Salts 147 mg / l. nas synergistic effect

The presented dynes show s ethylene taken in the indicated proportions of the composition proposed.

action of sodium oleate and polyoxy

Claims (1)

COMPOSITION FOR OIL DEWATERING based on an aqueous solution of polyoxyethylene with a molecular weight of (1-6) '1О ⁶ , characterized in that, in order to increase the dehydrating activity of the composition, it additionally contains sodium oleate in the following ratio of components, wt.%: Polyoxyethylene molecular weight (1-6) -10 ^fe Sodium oleate Water 0.5-2.0 0.05-0.1 Up to 100> ί