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Temperature-resistant and salt-resistant lubricating drag reducer for drilling fluid and preparation method thereof

A drilling fluid and drag reducing agent technology, which is applied in the field of drilling fluid manufacturing, can solve the problems of few types of drilling fluid lubricants, adverse effects on drilling fluid performance, and decreased lubricity, so as to meet the requirements of smooth development, improve low strength, and reduce frictional resistance. reduced effect

Pending Publication Date: 2020-09-25
SINOPEC SSC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some lubricant products have problems such as easy foaming, insufficient salt resistance, and decreased lubricity after high temperature aging
In particular, multi-functional drilling fluid lubricants have few types and high prices, which are likely to adversely affect the performance of drilling fluids

Method used

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  • Temperature-resistant and salt-resistant lubricating drag reducer for drilling fluid and preparation method thereof
  • Temperature-resistant and salt-resistant lubricating drag reducer for drilling fluid and preparation method thereof
  • Temperature-resistant and salt-resistant lubricating drag reducer for drilling fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The invention provides a temperature-resistant and salt-resistant lubricating and drag-reducing agent for drilling fluid, comprising the following components and parts by mass: base oil (white oil) 60ml, fatty acid amide 40g, oleic acid monoglyceride 3g, fatty acid alcohol amine ( Triethanolamine) 2g, its preparation method comprises the steps:

[0027] 1) Measure the base oil and place it in the reactor;

[0028] 2) Add fatty acid amide to the base oil, stir and react for 8 minutes, until the mixture is uniform;

[0029] 3) Add monoglyceride oleate, stir and react for 8 minutes, until the mixture is evenly stirred;

[0030] 4) Add fatty acid alcohol amine, stir and react for 8 minutes, until the mixture is uniform;

[0031] 5) Continue to stir and react for 30 minutes.

[0032] Further, the preparation method of the fatty acid amide is: adding vegetable oil fatty acid and alcohol amine with a mass ratio of 2:1 into the reaction kettle, heating the materials in the r...

Embodiment 2

[0035] The invention provides a temperature-resistant and salt-resistant lubricating and drag-reducing agent for drilling fluid, which comprises the following components and their mass fractions: 65ml of base oil (white oil), 35g of fatty acid amide, 3g of oleic acid monoglyceride, and 2g of fatty acid alcohol amine (Triethanolamine 1g, EDTA mixture 1g), its preparation method is with embodiment 1.

Embodiment 3

[0037] The invention provides a temperature-resistant and salt-resistant lubricating drag reducer for drilling fluid, which comprises the following components and their mass fractions: 70ml of base oil (white oil), 30g of fatty acid amide, 3g of oleic acid monoglyceride, and 2g of fatty acid alcohol amine (Triethanolamine 1g, EDTA mixture 1g), its preparation method is with embodiment 1.

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Abstract

The invention provides a temperature-resistant and salt-resistant lubricating drag reducer for drilling fluid and a preparation method of the temperature-resistant and salt-resistant lubricating dragreducer. The composition comprises the following components in parts by mass: 60-80 parts of base oil, 20-40 parts of fatty acid amide, 3-5 parts of oleic acid monoglyceride, 1-3 parts of fatty acid alcohol amine, 1-3 parts of triethanolamine and 1-3 parts of triethanolamine. The base oil comprises any one or a mixture of more of biodiesel, white oil, vegetable oil, animal oil and mineral oil, thefatty acid alcohol amine comprises any one or a mixture of more of C4-8 alcohol amine, triethanolamine and a C10-18 fatty acid mixture, and the preparation method comprises the following steps: weighing the base oil, and putting the base oil into a reactor; adding fatty acid amide into the base oil, and uniformly stirring; adding oleic acid monoglyceride, and uniformly stirring; adding fatty acidalcohol amine, and uniformly stirring; and performing continuous stirring reaction for 30 min. The friction resistance between a drill stem and rock can be greatly reduced, abrasion of a drilling tool and other metal parts is reduced, rotation resistance is reduced, and the oil-gas drill bit has the advantages of temperature resistance, salt resistance, friction resistance reduction, adhesion coefficient reduction and the like, and can meet the requirement for smooth development of oil-gas drills.

Description

technical field [0001] The invention relates to the technical field of drilling fluid manufacturing, in particular to a temperature-resistant and salt-resistant lubricating drag reducer for drilling fluid capable of improving the lubricity of drilling fluid and a preparation method thereof. Background technique [0002] With the continuous acceleration of oil exploration and development, in the drilling process of difficult wells such as complex formations, ultra-deep wells, highly deviated wells, horizontal wells and cluster wells, high temperature, high salt and high friction The resistance and pull resistance will be greatly increased) often occurs. Therefore, it has become a trend to research and develop lubricating drag reducers with high temperature resistance, salt resistance and high friction reduction. ProOne Company of the United States developed a new type of lubricant XPL+ by using molecular and charge-related technologies. Through the positively charged molecul...

Claims

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Application Information

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IPC IPC(8): C09K8/24
CPCC09K8/24
Inventor 赵素娟陈长元刘浩冰李银迪李必平罗志刚严维李思任继荣解丽影唐文明王晓亮
Owner SINOPEC SSC
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