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Title: Oil based packer fluids

Abstract

An oil base packer fluid for use in completing oil and gas wells comprising: (a) a liquid oleaginous medium; (b) an organophilic clay comprising the reaction product of an organic onium compound and a smectite clay; (c) a polar dispersant for said clay; and (d) a polyfunctional amino silane represented by the formula: R1-N(-R2)-X-SI(-O-R3)(-O-R5)-OR4 wherein R/sub 1/,R/sub 2/,R/sub 3/,R/sub 4/ and R/sub 5/ are each selected from the group consisting of hydrogen, alkyl, aryl, cycloalkyl, and alkylaryl; and X is selected from the group consisting of alkylene, arylene, alkarylene, arylalkylene, cycloalkylene, aminoalkylene, aminoarylene, aminoalkylarylene, aminoarylalkylene and aminocycloalkylene. The packer fluids are characterized by being thin and pumpable at temperatures up to about 130/sup 0/ F. but are gelled to form an insulating medium at temperatures above 130/sup 0/ F. A method of completing oil and gas wells is also provided comprising placing the oil base packer fluid in the annular space between the tubing and the wellbore of said well at temperatures up to about 130/sup 0/ F., and raising the temperature within the wellbore by producing oil or gas through said pipe above about 130/sup 0/ F. to gel said fluid.

Inventors:
;
Publication Date:
OSTI Identifier:
6415135
Patent Number(s):
US 4528104
Assignee:
N L Industries, Inc.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 19 Aug 1982; Other Information: PAT-APPL-409491
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; NATURAL GAS WELLS; PACKINGS; OIL WELLS; CHEMICAL COMPOSITION; CHEMICAL PREPARATION; AMINO ACIDS; CLAYS; GELATION; HYDROGEN COMPOUNDS; MEDIUM TEMPERATURE; MINERALS; ORGANIC COMPOUNDS; PETROLEUM PRODUCTS; SILANES; SMECTITE; WELL COMPLETION; ALUMINIUM COMPOUNDS; ALUMINIUM SILICATES; CARBOXYLIC ACIDS; HYDRIDES; ORGANIC ACIDS; ORGANIC SILICON COMPOUNDS; OXYGEN COMPOUNDS; SILICATE MINERALS; SILICATES; SILICON COMPOUNDS; SYNTHESIS; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing

Citation Formats

House, R F, and Scearce, F A. Oil based packer fluids. United States: N. p., 1985. Web.
House, R F, & Scearce, F A. Oil based packer fluids. United States.
House, R F, and Scearce, F A. Tue . "Oil based packer fluids". United States.
@article{osti_6415135,
title = {Oil based packer fluids},
author = {House, R F and Scearce, F A},
abstractNote = {An oil base packer fluid for use in completing oil and gas wells comprising: (a) a liquid oleaginous medium; (b) an organophilic clay comprising the reaction product of an organic onium compound and a smectite clay; (c) a polar dispersant for said clay; and (d) a polyfunctional amino silane represented by the formula: R1-N(-R2)-X-SI(-O-R3)(-O-R5)-OR4 wherein R/sub 1/,R/sub 2/,R/sub 3/,R/sub 4/ and R/sub 5/ are each selected from the group consisting of hydrogen, alkyl, aryl, cycloalkyl, and alkylaryl; and X is selected from the group consisting of alkylene, arylene, alkarylene, arylalkylene, cycloalkylene, aminoalkylene, aminoarylene, aminoalkylarylene, aminoarylalkylene and aminocycloalkylene. The packer fluids are characterized by being thin and pumpable at temperatures up to about 130/sup 0/ F. but are gelled to form an insulating medium at temperatures above 130/sup 0/ F. A method of completing oil and gas wells is also provided comprising placing the oil base packer fluid in the annular space between the tubing and the wellbore of said well at temperatures up to about 130/sup 0/ F., and raising the temperature within the wellbore by producing oil or gas through said pipe above about 130/sup 0/ F. to gel said fluid.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {7}
}