A method of using waste engine oil to prepare multifunctional lubricant for drilling fluid

A waste engine oil and lubricant technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of acid slag, waste water and harmful gas polluting the environment, achieve good filtration loss reduction effect, simple production process, The effect of simple preparation process

Inactive Publication Date: 2017-01-04
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] In order to solve the serious environmental pollution problems such as acid slag, waste water and harmful gas in the current waste engine oil treatment, the present invention provides a method for preparing a drilling fluid multifunctional lubricant using waste engine oil

Method used

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  • A method of using waste engine oil to prepare multifunctional lubricant for drilling fluid
  • A method of using waste engine oil to prepare multifunctional lubricant for drilling fluid
  • A method of using waste engine oil to prepare multifunctional lubricant for drilling fluid

Examples

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Effect test

Embodiment 1

[0060] (1) First, weigh the waste engine oil and put it into the reactor, put the reactor into the electric heating constant temperature water bath, and adjust the temperature of the water bath to 40°C;

[0061] (2) Then weigh the liquid SO 3 Put the waste engine oil and liquid SO into the dropping funnel 3 The weight ratio is 89:15, in order to make the liquid SO dripped from the dropping funnel 3 into gas SO 3 , the gas generator connected to the dropping funnel is kept at 50-70°C through the thermal cycle of the jacketed water bath, so that the gas SO 3 Continuously enter the sulfonation reactor to react evenly with waste engine oil;

[0062] (3) Gas SO 3 Before entering the reactor with N 2 Mixed, N 2 As a carrier gas and diluent gas to control the sulfonation reaction rate, N 2 The flow rate is 80mL / min;

[0063] (4) Gas SO 3 After reacting with waste engine oil for 2 hours, add triethylamine to the reactor to adjust the pH to 8, then add sodium oleate and Span-8...

Embodiment 2

[0065] (1) First, weigh the waste engine oil and put it into the reactor, put the reactor into the electric heating constant temperature water bath, and adjust the temperature of the water bath to 60°C;

[0066] (2) Then weigh the liquid SO 3 Put the waste engine oil and liquid SO into the dropping funnel 3 The weight ratio is 109:15, in order to make the liquid SO dripped from the dropping funnel 3 into gas SO 3 , the gas generator connected to the dropping funnel is kept at 50-70°C through the thermal cycle of the jacketed water bath, so that the gas SO 3 Continuously enter the sulfonation reactor to react evenly with waste engine oil;

[0067] (3) Gas SO 3 Before entering the reactor with N 2 Mixed, N 2 As a carrier gas and diluent gas to control the sulfonation reaction rate, N 2 The flow rate is 90mL / min;

[0068] (4) Gas SO 3 After reacting with waste engine oil for 4 hours, add ethylenediamine to the reactor to adjust the pH to 8-9, then add sodium oleate and S...

Embodiment 3

[0070] (1) First, weigh the waste engine oil and put it into the reactor, put the reactor into the electric heating constant temperature water bath, and adjust the temperature of the water bath to 50°C;

[0071] (2) Then weigh the liquid SO 3 Put the waste engine oil and liquid SO into the dropping funnel 3 The weight ratio is 100:15, in order to make the liquid SO dripped from the dropping funnel 3 into gas SO 3 , the gas generator connected to the dropping funnel is kept at 50-70°C through the thermal cycle of the jacketed water bath, so that the gas SO 3 Continuously enter the sulfonation reactor to react evenly with waste engine oil;

[0072] (3) Gas SO 3 Before entering the reactor with N2 Mixed, N 2 As a carrier gas and diluent gas to control the sulfonation reaction rate, N 2 The flow rate is 85mL / min;

[0073] (4) Gas SO 3 After reacting with waste engine oil for 3 hours, add ethylenediamine to the reactor to adjust the pH to 8-9, then add sodium oleate and Spa...

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Abstract

The invention discloses a method for preparing a drilling fluid multi-functional lubricant by using waste oil. The method is as follows: (1) firstly weigh the waste oil and put it into a reactor, and then put the reactor into an electric heating constant temperature water bath; (2) ) then weigh the liquid SO3 and put it into the dropping funnel, in order to make the liquid SO3 dripped from the dropping funnel become gas SO3, the gas generator connected to the dropping funnel keeps 50-70°C through the thermal circulation effect of the jacketed water bath. ℃; (3) gas SO3 is mixed with N2 before entering the reactor; (4) control the reaction temperature to 50 ℃, after the gas SO3 reacts with waste oil for 2-4h, add organic alkali to the reactor, adjust the pH to 8-9, Then add the composite surfactant into the reactor, and after stirring for 3-10min, the lubricant is obtained. Compared with similar lubricants, the lubricant prepared by the invention has simple production process and low cost, not only has good high temperature extreme pressure lubricity, but also has good fluid loss reduction and anti-slump performance, and is suitable for horizontal wells and complex formation drilling. .

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for preparing a drilling fluid multifunctional lubricant by using waste engine oil. Background technique [0002] According to incomplete statistics, tens of thousands of tons of waste engine oil are produced in the world every year, and there is a rising trend. There are discarding method, spraying method, incineration method and regeneration method to the treatment of waste engine oil both at home and abroad. At present, most of them adopt the method of recycling. That is to remove the impurities in the waste engine oil by certain physical and chemical means, and then reconcile it into qualified engine oil by adding some chemical agents for recycling. At present, many waste engine oil recycling processes will produce a large amount of acid residue and waste water, seriously polluting the environment. Based on the analysis of the chemical components of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035
CPCC09K8/035C09K2208/34
Inventor 王兆兴樊泽霞王杰祥樊晓璇朱锰飞陈征
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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