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Preparation method of organic rheology modifying agent for full-oil-based drilling fluid

A rheology modifier and drilling fluid technology, which is applied in the preparation of organic compounds, organic chemistry, and drilling compositions, etc., can solve the problems of low dynamic shear force, low viscosity, low shear rate, etc., and achieve improved Suspension and thixotropy effects

Active Publication Date: 2013-04-03
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of preparation method that is applicable to the organic rheology modifier of low viscosity, low aromatics content mineral oil full oil base drilling fluid, to solve the low dynamic shear force of full oil base drilling fluid, low shear rate is low low viscosity problem

Method used

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  • Preparation method of organic rheology modifying agent for full-oil-based drilling fluid
  • Preparation method of organic rheology modifying agent for full-oil-based drilling fluid
  • Preparation method of organic rheology modifying agent for full-oil-based drilling fluid

Examples

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Embodiment 1

[0029] Add 4 mol of dibasic fatty acid methyl ester with 36 carbon atoms, 4 mol of dihydroxypropyl Amine, heat up to 150°C with heat conduction oil, when the methanol collected in the receiver is about 2mol, lower the temperature to 120°C to reduce the volatilization of triethylenetetramine, then add 1mol of triethylenetetramine, then raise the temperature to 170°C, when The reaction was terminated when about 4 mol of methanol was collected in the receiver. After cooling down, add a mixed solvent of kerosene and propylene carbonate prepared at a mass ratio of 9:1, the mass ratio of the mixed solvent to the reaction product is 1:1, and stir evenly to obtain the product ORM-1.

Embodiment 2

[0031] Add 4 mol of dibasic fatty acid with 36 carbon atoms and 4 mol of propyl hydroxypropylamine in a four-port reactor with stirrer, thermometer, nitrogen device and Dean-Stark receiver, heat conduction oil to 150 ° C, When the water collected in the receiver is about 2 mol, the temperature is lowered to 120° C., 1 mol of triethylenetetramine is added, and then the temperature is raised to 170° C., and the reaction is terminated when the water collected in the receiver is about 4 mol. After cooling down, add a mixed solvent of 5# white oil and propylene carbonate prepared at a mass ratio of 9:1, the mass ratio of the mixed solvent to the reaction product is 1:1, stir evenly, and the product ORM-2 is obtained.

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Abstract

The invention discloses a preparation method of an organic rheology modifying agent for full-oil-based drilling fluid. The preparation method comprises the following steps: 1) reacting polybasic fatty acid or ester of the polybasic fatty acid with hydroxyalkyl-substituted amine at 130 to 150 DEG C, wherein the hydroxyalkyl-substituted amine reacts with half of the carboxyl groups or carboxylic esters of the polybasic fatty acid or the ester of the polybasic fatty acid based on the rate of charge; and 2) reacting the reaction product in step 1) with organic polyamine at 150 to 170 DEG C, wherein the organic polyamine completely reacts with the amidation-free carboxyl or carboxylic ester in step 1) based on the rate of discharge. The organic rheology modifying agent prepared by the preparation method disclosed by the invention is in a gel structure with a certain strength, and can effectively improve the suspension property and thixotropy of the oil-based drilling fluid, thus the drilling liquid which is high in shear thinning performance and yield value, low in gel strength and low in plastic viscosity can be generated.

Description

technical field [0001] The invention relates to an all-oil-based drilling fluid, in particular to a method for preparing an organic rheology modifier of the all-oil-based drilling fluid. Background technique [0002] Oil-based drilling fluid is a typical type of thixotropic fluid, which exhibits low viscosity under shearing conditions. When shearing stops, it must be able to quickly form a certain strength gel structure to suspend cuttings and heavy materials. At present, oil-based drilling fluids mainly use base oils with low viscosity and low aromatic content, such as mineral oil, internal olefins, α-olefins, esters, etc. However, most organoclays cannot effectively disperse or swell in low-viscosity, low-aromatic base oils, requiring increased temperature and increased mechanical force, but it is difficult to achieve such configuration conditions on site. Also, due to the lower thixotropic properties in such base oils, higher concentrations of organoclays are often requi...

Claims

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Application Information

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IPC IPC(8): C07C231/02C07C233/38C09K8/035C09K8/32
Inventor 张现斌黄达全王伟忠马运庆李振杰田增艳马翠雪
Owner BC P INC CHINA NAT PETROLEUM CORP
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