Method for preparing multifunctional lubricant of drilling fluid by using waste oil

A waste engine oil and lubricant technology, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of acid residue, waste water and harmful gas pollution, and achieve good filtration loss reduction, low cost, and faster less effect

Inactive Publication Date: 2014-03-05
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 wast...

Method used

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  • Method for preparing multifunctional lubricant of drilling fluid by using waste oil
  • Method for preparing multifunctional lubricant of drilling fluid by using waste oil
  • Method for preparing multifunctional lubricant of drilling fluid by using waste oil

Examples

Experimental program
Comparison scheme
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 3Before 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 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 Sp...

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Abstract

The invention discloses a method for preparing a multifunctional lubricant of drilling fluid by using waste oil. The method comprises the following steps: (1) firstly, weighing the waste oil and putting into a reactor, and putting the reactor into an electrothermal constant-temperature water bath kettle; (2) then weighing liquid SO3 and putting into a dropping funnel, in order to change the liquid SO3 dripping from the dropping funnel into a gas SO3, and keeping a gas generator connected with the dropping funnel at 50-70 DEG C by a thermal cycling effect of a jacket water bath; (3) mixing with N2 before the gas SO3 enters a reactor; and (4) controlling the reaction temperature at 50 DEG C, enabling the gas SO3 to react with the waste oil for 2-4 hours, and then adding an organic alkali to the reactor, adjusting the pH to 8-9, and then adding a composite surfactant to the reactor, so as to obtain the lubricant after agitating for 3-10 minutes. Compared with the similar lubricant, the lubricant prepared by the method disclosed by the invention is simple in production technology, and low in cost, has good high-temperature extreme pressure lubricity, also has good fluid loss effect and anti-collapse performance, and is applicable to horizontal well and complicated stratum 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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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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