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Method of removing micro C1-C7 low carbon component in polyether poly hydric alcohol

A polyether polyol, C1-C7 technology, applied in the field of removing trace C1-C7 low-carbon components in polyether polyol, can solve the problems of adverse effects on drilling fluid performance, increased analysis results, interference with geological logging, etc.

Inactive Publication Date: 2007-08-01
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still the following problems: with the addition of polyether polyol lubricants, it is easy to have an adverse effect on the performance of the drilling fluid, and the oil top gas chromatography analysis of the drilling fluid system shows that C 1 -C 7 Low-carbon component analysis results greatly increased, interfering with geological logging

Method used

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  • Method of removing micro C1-C7 low carbon component in polyether poly hydric alcohol
  • Method of removing micro C1-C7 low carbon component in polyether poly hydric alcohol

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Pump the polyether polyol material into the reactor, turn on the vacuum system, control the temperature at 110°C, the pressure at 0.02Mpa, and the time for 6 hours to remove a small amount of C1-C7 components in the material, and then lower the temperature to 40°C. Outgoing packaging. According to the Petroleum and Natural Gas Industry Standard of the People's Republic of China SY5259-91 "Gas Chromatographic Analysis Method for Light Hydrocarbons in Debris Tank Top Gas", the light hydrocarbon samples naturally desorbed from the material are separated in the chromatographic column and detected by a hydrogen flame detector. After data processing, the content of each component of C1-C7 light hydrocarbons was obtained.

[0021] Test results: methane 12.42 μL / L, ethane 32.45 μL / L, propane 46368.23 μL / L, others were not detected, the total amount was 46413.1 μL / L. The fluorescence of 2% polyether polyol lubricant aqueous solution was measured by YZ-1 petroleum fluorescence a...

Embodiment 2

[0023] The polyether polyol material is pumped into the reactor, nitrogen gas with a purity of 99.99% is introduced into the reactor system, the vacuum system is turned on, the temperature is controlled at 100°C, the pressure is 0.04Mpa, the time is 3 hours, and the flow rate of the inert gas is 7 kg / hour to remove traces of C1-C7 components in the material, then cool down to 40°C, and pack out the material. According to the Petroleum and Natural Gas Industry Standard of the People's Republic of China SY5259-91 "Gas Chromatographic Analysis Method for Light Hydrocarbons in Debris Tank Top Gas", the light hydrocarbon samples naturally desorbed from the material are separated in the chromatographic column and detected by a hydrogen flame detector. After data processing, the content of each component of C1-C7 light hydrocarbons was obtained.

[0024] Test results: methane 32.48 μL / L, ethane 28.43 μL / L, propane 19185.79 μL / L, others were not detected, the total amount was 19246.7 ...

Embodiment 3

[0026] The polyether polyol material is pumped into the reactor, nitrogen gas with a purity of 99.9% is introduced into the reactor system, the vacuum system is turned on, the temperature is controlled at 120°C, the pressure is 0.06Mpa, the time is 2 hours, and the inert gas flow rate is 8 kg / hour, to remove trace C1-C7 components in the material, then cool down to 30°C, and pack out the material. According to the Petroleum and Natural Gas Industry Standard of the People's Republic of China SY5259-91 "Gas Chromatographic Analysis Method for Light Hydrocarbons in Debris Tank Top Gas", the light hydrocarbon samples naturally desorbed from the material are separated in the chromatographic column and detected by a hydrogen flame detector. After data processing, the content of each component of C1-C7 light hydrocarbons was obtained. Test results: Propane 312.96 μL / L, others were not detected, the total amount was 312.96 μL / L. The fluorescence of 2% polyether polyol lubricant aqueo...

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Abstract

The present invention discloses a method for removing micro C1-C7 low-carbon components from polyether polybasic alcohol. Said method includes the following steps: placing polyether polybasic alcohol material in a reactor, introducing high-purity inert gas whose purity is 99.0-99.99%, under the condition of that temperature is 80-150deg.C and pressure is 0.01-0.09MPa evacuating for 0.5-6hr, cooling to 30-50deg.C so as to obtain the polyether polybasic alcohol in which C1-C7 low-carbon components are removed.

Description

technical field [0001] The invention relates to a method for removing trace amounts of C in polyether polyols 1 -C 7 low-carb approach. Background technique [0002] With the rapid development of modern drilling technology and the continuous improvement of environmental protection requirements, drilling fluid technology is facing severe challenges. In the process of using traditional water-based drilling fluids in horizontal wells, directional wells and highly deviated wells, in order to reduce the friction between the well wall and the drilling tool, and between the drilling tool and the drilling tool, as well as reduce the sticking of mud cake and other problems , Oil lubricants are often added to the drilling fluid. Due to the biological toxicity and fluorescence of oil lubricants, it interferes with geological logging and is not conducive to the discovery of oil and gas layers. The discharge of waste drilling cuttings and drilling fluids causes serious pollution to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/46
Inventor 肖稳发
Owner SHANGHAI UNIV OF ENG SCI
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