Low fluorescence lubricant for well drilling liquid and its producing method

A production method and low-fluorescence technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of geological logging that have a large impact and affect oil and gas layers, so as to prevent pipe sticking accidents, consolidate the well wall, and suppress The effect of hydration swelling

Inactive Publication Date: 2007-04-11
HENGXIANG SCI & TECH KELAMAYI CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In exploratory wells and some key wells, after adding the common lubricant currently used, due to the fluorescence problem, it

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1: Take 50 parts of aviation kerosene and 20 parts of industrial white oil by weight and add them to the reaction kettle, heat up to 70°C with a water-jacketed jacketed furnace and stir for 40 minutes, add 1 part of sulfur powder, stir and continue to heat up to 100°C, Then add 3.5 parts of oleic acid, stir for 30 minutes, and lower the temperature to 70°C, then add 3.5 parts of polyoxyethylene ether and 1 part of SP-80, and stir for 60 minutes to obtain the low fluorescence lubricant for drilling fluid of the present invention.

Embodiment 2

[0009] Example 2: Take 90 parts of aviation kerosene and 15 parts of industrial white oil by weight and add them to the reactor, heat up to 90°C with a water jacket furnace and stir for 30 minutes, add 2.5 parts of sulfur powder, stir and continue to heat to 90°C, then Add 3.5 parts of oleic acid, stir for 30 minutes, lower the temperature to 80°C, add 8.5 parts of polyoxyethylene ether and 2.5 parts of SP-80, and stir for 30 minutes to prepare the low fluorescence lubricant for drilling fluid of the present invention.

Embodiment 3

[0010] Example 3: Take 65 parts of aviation kerosene and 15 parts of industrial white oil by weight and add them to the reactor, heat up to 75°C with a water jacket furnace and stir for 60 minutes, add 2 parts of sulfur powder, stir and continue to heat to 95°C, then Add 4 parts of oleic acid, stir for 40 minutes, lower the temperature to 70°C, add 4 parts of polyoxyethylene ether and 2 parts of SP-80, and stir for 50 minutes to prepare the low fluorescence lubricant for drilling fluid of the present invention.

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PUM

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Abstract

The present invention relates to one kind of low fluorescence lubricant for well drilling fluid and its production process. The low fluorescence lubricant is produced through adding aviation kerosene in 50-90 weigh portions and industrial white oil in 15-75 weigh portions into reaction kettle, heating in water jacket furnace to 70-90 deg.c and stirring for 30-60 min, adding sulfur powder in 0.5-2.5 weigh portions, stirring and further heating to 90-100 deg.c, adding oleic acid in 3.5-8.5 weigh portions, stirring for 30-60 min, cooling to 70-80 deg.c, adding polyoxyethylene ether in 3.5-8.5 weigh portions and Span-80 in 0.5-2.5 weigh portions, and further stirring for 30- 60 min. It is used in drilling well and can inhibit the hydrating expansion of clay shale, consolidate well wall and avoid bit freezing. Compared with available technology, the present invention has the advantages of low fluorescence level and no influence on geological logging.

Description

technical field [0001] The invention relates to a lubricant for drilling fluid and a production method thereof, in particular to a low-fluorescence lubricant for drilling fluid and a production method thereof. Background technique [0002] In exploratory wells and some key wells, after adding the common lubricant currently used, due to the fluorescence problem, it has a great impact on geological mud logging, which seriously affects the logging staff to discover new oil and gas layers in mud logging. Contents of the invention [0003] The purpose of the present invention is to provide a kind of drilling fluid with low fluorescence level, no influence on geological mud logging, and can also be applied to production wells, which can inhibit the hydration expansion of mud shale, consolidate the well wall and prevent the occurrence of stuck pipe accidents. A low-fluorescence lubricant and a method for producing the same. [0004] The lubricant of the present invention is prod...

Claims

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Application Information

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IPC IPC(8): C09K8/035
Inventor 陶梅
Owner HENGXIANG SCI & TECH KELAMAYI CITY
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