SU639916A1 - Composition for dewatering and desalting petroleum - Google Patents

Description

As a non-ionic demulsifier, any demionator reagents of the leionogein type can be used. Sodium silicate can be used as a water glass. In the desalting process, the aqueous solution is mixed with oil. It is molded when the composition of the proposed composition is metered into the oil pipeline, into the settling tanks with a stirrer, or when oil is passed through the composition of the composition indicated above into the reservoir, the voirs. Both the crude oil and mixtures of various grades of crude oil that have undergone primary oil preparation and field gathering points can be desalted with the proposed composition. Example 1. Desalting is subjected to a viscous, highly paraffin Devonian oil from the Sultangulovskoye-Zaglinskoye field, which has undergone dehydration at an oil preparation unit and contains 465 mg / l of chloride salts. An aqueous solution of the following composition is prepared, wt. %: Dissolvan 0.05 Liquid glass 0.056 Amphoteric polnelectrolyte with methylphosphonic group 0, 032 Water 99.862 V solution of the composition heated to 60 ° C, inject oil with the same temperature and pe mixture, stirred in a mixer at 500 rpm for 15 min ( with a volume ratio of efti and composition V: Vk 90: 10). After settling under isothermal conditions at 60 ° C and the aqueous phase precipitates from the oil, an average sample is taken and analyzed for the content of chloride salts using a laboratory analyzer of chloride salts (LAS-1). For comparison, under the same conditions and on the same oil, the effectiveness of the prototype with the following ratios of ingredients, wt. %: Diosolvan 4411 Liquid glass Partially hydrolyzed polyacrylamide (in terms of 100% of the substance) 0.032 Water 99.862 The data obtained are shown in Table. 1. Tbl 11 ca Composition for treatment Residual oil content of salts, mg dissolvant mixture 4411, liquid glass, a part of hydrolyzed water, and water, composition Composition Example 2. Desalting is subjected to a viscous, highly paraffin Devonian effect of Sultangulovskoe-Gludinsky pattern. undergoing dehydration in an oil preparation unit and containing 465 mg1l chloride salts. Prepare an aqueous solution of the following soave, wt. %: Separol-250,05 Liquid glass 0.056 Amphoteric polyelectrolyte with methylphosphonic group 0.032 Water 99.862 The data obtained are shown in Table. 2. Table 2 Composition for treatment Residual salt content, gh / l oil, mixture of separaol-25, liquid glass, partially hydrolyzed polyacrylamide and water. Composition: Table. 3, 4, 5, 6 shows the results of oil processing using the claimed composition. Table 3

Continuation of table 3

eight

Continuation of table 4

T a o l II c and

Table 6

Claims (2)

1. The state and prospects of development of technology and technology collection, training oil, gas and water in the industry. M., 1975, 52-54, 65-69. 2. Avt. St. No. 446539, cl. C 10 G 33/01, 1976 (prototype).