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Inverted emulsion drilling fluid

Patent:

Abstract

The subject of the invention is the method of obtaining inverted drilling fluid which is required during stripping of a productive bed and ending of a well where difficulties develop during drilling of the argillaceous rock. Example: in a reservoir with capacity 30 m/sup 3/, 10 m/sup 3/ of diesel fuel are added. A total of 1000 kg of emulsifier are added to the diesel fuel consisting of: 85 mass% of a mixture of sodium and potassium salts of fatty acids, residues of fatty acids or naphthene acids with high molecular weight taken in proportion of 10:90; 5 mass% of a mixture of polymers with hydrophilic-hydrophobic properties obtained by mixing 75 mass% of polyethylene oxide with molecular weight 10,000 and 25 mass% of propylene oxide with molecular weight 15,000, and 10 mass% of salt on alkaline earth metal (preferably calcium chloride). The mixture is mixed into complete dissolving. Then 1200 kg of filtering accelerator are added obtained from concentrated sulfuric acid serving for sulfur oxidation, asphalt substance with softening temperature 85-104/sup 0/C and fatty acids C/sub 10/-C/sub 20/ taken in a proportion of 23.70 and 7 mass% The mixture obtained in this manner is neutralized by adding calcium hydroxide and  More>>
Publication Date:
Jul 28, 1979
Product Type:
Patent
Report Number:
RO 78305
Reference Number:
EDB-83-124073
Resource Relation:
Patent File Date: Filed date 5 Apr 1974; Other Information: PAT-APPL-63530
Subject:
42 ENGINEERING; DRILLING FLUIDS; SEPARATION PROCESSES; DIESEL FUELS; EMULSIFIERS; EMULSIONS; SURFACTANTS; VISCOSITY; WELLS; ADDITIVES; COLLOIDS; DISPERSIONS; FLUIDS; PETROLEUM PRODUCTS; 420206* - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)
OSTI ID:
6261475
Country of Origin:
Romania
Language:
Rumanian
Availability:
Plenum Publishing Corp., New York, NY.
Submitting Site:
HEDB
Size:
Pages: v
Announcement Date:

Patent:

Citation Formats

Ana, I, Astanei, E, Mireanu, G, Orosz, M, Popescu, F, and Vasile, I. Inverted emulsion drilling fluid. Romania: N. p., 1979. Web.
Ana, I, Astanei, E, Mireanu, G, Orosz, M, Popescu, F, & Vasile, I. Inverted emulsion drilling fluid. Romania.
Ana, I, Astanei, E, Mireanu, G, Orosz, M, Popescu, F, and Vasile, I. 1979. "Inverted emulsion drilling fluid." Romania.
@misc{etde_6261475,
title = {Inverted emulsion drilling fluid}
author = {Ana, I, Astanei, E, Mireanu, G, Orosz, M, Popescu, F, and Vasile, I}
abstractNote = {The subject of the invention is the method of obtaining inverted drilling fluid which is required during stripping of a productive bed and ending of a well where difficulties develop during drilling of the argillaceous rock. Example: in a reservoir with capacity 30 m/sup 3/, 10 m/sup 3/ of diesel fuel are added. A total of 1000 kg of emulsifier are added to the diesel fuel consisting of: 85 mass% of a mixture of sodium and potassium salts of fatty acids, residues of fatty acids or naphthene acids with high molecular weight taken in proportion of 10:90; 5 mass% of a mixture of polymers with hydrophilic-hydrophobic properties obtained by mixing 75 mass% of polyethylene oxide with molecular weight 10,000 and 25 mass% of propylene oxide with molecular weight 15,000, and 10 mass% of salt on alkaline earth metal (preferably calcium chloride). The mixture is mixed into complete dissolving. Then 1200 kg of filtering accelerator are added obtained from concentrated sulfuric acid serving for sulfur oxidation, asphalt substance with softening temperature 85-104/sup 0/C and fatty acids C/sub 10/-C/sub 20/ taken in a proportion of 23.70 and 7 mass% The mixture obtained in this manner is neutralized by adding calcium hydroxide and equal quantities of alumina and activated bentonite clay in a concentration of 1-10 mass%, more preferably 5 mass% in relation to the initial mixture. The obtained mass is mixed until complete dispersion, after which 200 kg of organophilic clay are added obtained from bentonite of the type montmorillonite of sodium by processing with derivate obtained from amine of the type of the quaternary base of ammonium salt, and agent of hydrophobization of the type of fatty alcohols, fatty acids, nonion surfactants of the block-polymer type. After complete dispersion of the organophilic clay, 100 kg of stabilizer of emulsion of the surfactant type was added with molecular weight of 250010,000, more preferably 5000, in concentration of 0.1-5.0 mass%, more preferably 2 mass%.}
place = {Romania}
year = {1979}
month = {Jul}
}