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

A rheology modifier, drilling fluid technology, applied in the preparation of organic compounds, organic chemistry, drilling composition, etc., can solve the problems of low dynamic shear force, low viscosity, low shear rate, etc., to improve The effect of suspension and thixotropy
CN103012180BActive Publication Date: 2014-07-09BC P INC CHINA NAT PETROLEUM CORP +1
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2014-07-09

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More