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Pure luminescence-free lubricant for petroleum drilling liquid

An oil drilling, non-fluorescent technology, which is applied in the lubricant field, can solve the problems of lubricant environmental protection and fluorescence, etc., and achieve the effects of good anti-slump performance, long processing cycle and excellent solubility

Inactive Publication Date: 2008-08-27
HEFEI BINCHUN CHEM IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of environmental protection and fluorescence in lubricants, the present invention provides a non-toxic, non-fluorescent and easily biodegradable pure non-fluorescent vegetable oil lubricant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Get the following raw materials: vegetable oil 400Kg, 15% sodium hydroxide solution 80Kg, 10% potassium hydroxide solution 40Kg, slaked lime 22Kg, 3% carboxymethyl cellulose solution 100Kg, 12.5-15% hydrolyzed polyacrylonitrile ammonium salt solution 150Kg, acrylic acid Calcium 6Kg, sodium acrylate 7.5Kg, acrylamide 5.5Kg, water 100Kg, prepare pure non-fluorescent lubricant for petroleum drilling fluid, the appearance of the obtained product is viscous liquid, the amount of drilling fluid added is 0.5%, and the friction coefficient reduction rate is ≥70% , Torque reduction rate ≥ 50%.

[0034] The preparation method of pure non-fluorescent lubricant for petroleum drilling fluid comprises the steps:

[0035] Add the vegetable oil in the above formula into the container, stir and heat to 43-46°C;

[0036] Adding 10% potassium hydroxide solution and 15% sodium hydroxide solution while stirring to adjust the pH value of the vegetable oil to 9.8 to obtain a saponified produ...

Embodiment 2

[0042] Get the following raw materials: vegetable oil 450Kg, 15% sodium hydroxide solution 90Kg, 10% potassium hydroxide solution 50Kg, slaked lime 24Kg, 3% carboxymethyl cellulose solution 130Kg, 12.5-15% hydrolyzed polyacrylonitrile ammonium salt solution 180Kg, acrylic acid Calcium 8Kg, sodium acrylate 9Kg, acrylamide 7.5Kg, water 150Kg, prepare pure non-fluorescent lubricant for petroleum drilling fluid, the appearance of the obtained product is viscous liquid, the amount of drilling fluid added is 0.5%, and the friction coefficient reduction rate is ≥80%. Torque reduction rate ≥ 52%.

[0043] In the preparation method, 10% potassium hydroxide solution and 15% sodium hydroxide solution are added while stirring to adjust the pH value of the vegetable oil to 10.5, and the others are the same as in Example 1.

Embodiment 3

[0045] Get the following raw materials: vegetable oil 500Kg, 15% sodium hydroxide solution 100Kg, 10% potassium hydroxide solution 60Kg, hydrated lime 26Kg, 3% carboxymethyl cellulose solution 150Kg, 12.5-15% hydrolyzed polyacrylonitrile ammonium salt solution 200Kg, acrylic acid Calcium 9Kg, sodium acrylate 10Kg, acrylamide 9.5Kg, water 200Kg, prepare pure non-fluorescent lubricant for petroleum drilling fluid, the appearance of the obtained product is viscous liquid, the amount of drilling fluid added is 0.5%, and the friction coefficient reduction rate is ≥85%. Torque reduction rate ≥ 53%.

[0046] In the preparation method, 10% potassium hydroxide solution and 15% sodium hydroxide solution are added while stirring to adjust the pH value of the vegetable oil to 11, and the others are the same as in Example 1.

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PUM

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Abstract

The invention relates to a pure lubricating agent without fluorescence for bergol drilling fluid, which solves the problem of the existing lubricating agent which is not environmental protection and has fluorescence. The lubricating agent of the invention comprises the following raw materials which are vegetable oil, 15% sodium-hydroxide solution, 10% potassium hydrate solution, slaked lime, 3% carboxymethyl cellulose solution, 12.5-15% ammonium salt solution of partially hydrolyzed polyacrylonitrile, calcium acrylate, sodium acrylate, acrylamide and water. The lubricating agent products of the invention have no pollution to environment, which is easy to be biodegraded, does not corrode metal, does not damage sealing material, when in production, no three wastes are discharged. The lubricating agent belongs to pure products without fluorescence, which does not disturb any geological logging work, and has relative protective function to the productivity of hydrocarbon zones.

Description

technical field [0001] The invention relates to a lubricant, in particular to a lubricant for petroleum drilling fluid. Background technique [0002] With the continuous development of the petroleum industry and the strengthening of environmental protection awareness, some new petroleum drilling techniques, such as directional wells and horizontal wells, have been gradually formed and perfected in drilling engineering. In order to ensure the smooth progress of these difficult oil exploration and development drilling projects, the lubricant used in the drilling fluid plays a vital role in the drilling process and is the key to ensuring the success of the drilling operation. Lubricants used in drilling fluids can be roughly divided into two categories: solid and liquid. As far as liquid is concerned, its main raw materials are mostly based on organic matter of polyaromatic hydrocarbons such as mineral oil, kettle residue, crude oil, asphalt, etc. The lubricant produced from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035
Inventor 凡宗和杨映川陈敏
Owner HEFEI BINCHUN CHEM IND TECH
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