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Drilling fluid lubricating additive and its preparing method

A technology for lubricating additives and drilling fluids, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of low-cost drilling, difficult modern environmental protection, non-biodegradation, etc., and achieve good lubrication and drag reduction effect. , to meet the requirements of low cost, the effect of strong calcium ion erosion

Inactive Publication Date: 2006-12-27
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some people have used waste diesel oil, waste engine oil, white oil and other petroleum products to develop various drilling lubricants. However, these products either have unsatisfactory drag reduction effects, or have poor stability after adding drilling fluid, and are prone to loss of lubrication due to demulsification. Phenomenon of action
More importantly, most of these petroleum products are not biodegradable, and it is difficult to meet the requirements of modern environmental protection.
Although individual lubricant products are low-fluorescent or non-fluorescent lubricants, the price is too high to meet the requirements of low-cost drilling. Moreover, the products in the prior art contain a single type of surfactant, which is difficult to meet the requirements of hyperactive salt, anti-calcium performance requirements, such as: Chinese patent CN95119619.7 discloses a kind of material composed of main material components selected from oleic acid, fatty acid, linoleic acid, linolenic acid, palmitic acid, palmitoleic acid, myristic acid and mixtures thereof A group of substances, it is a multi-component mixture of artificial extraction and artificial compounding. The lubricant composition is only the main material used alone or in combination with a tertiary amine such as triethanolamine. Not only the performance is single, but also the raw material cost is low. Very high, not suitable for use as drilling fluid lubricant additives

Method used

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  • Drilling fluid lubricating additive and its preparing method
  • Drilling fluid lubricating additive and its preparing method
  • Drilling fluid lubricating additive and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Ingredients as follows:

[0031] Vegetable oil waste 30%, triethanolamine 1.5%, caustic soda (NaOH) 6%, nonylphenol polyoxyethylene ether (OP-10) 0.6%, the rest is water, in a reactor that can be heated and stirred, such as a reactor Add the water required in the above formula (leave an appropriate amount of water to configure the caustic soda solution) and vegetable oil leftovers, and configure the caustic soda into a 30% aqueous solution while heating. When the temperature in the reactor reaches 55°C, slowly add the prepared Caustic soda solution, stir while adding, keep the temperature at 55°~60°C after the addition, and keep stirring for 80 minutes, then remove the heat source, cool the reactor with circulating water if possible, let it cool naturally when the temperature is not When the temperature drops below 40°C, add triethanolamine and nonylphenol polyoxyethylene ether (OP-10) in the required ratio, and stir evenly to obtain the lubricating additive of the pres...

Embodiment 2

[0033] Ingredients as follows:

[0034] Vegetable oil waste 40%, triethanolamine 2%, caustic soda (NaOH) 8%, nonylphenol polyoxyethylene ether (OP-10) 0.8%, the rest is water, in a reactor that can be heated and stirred, such as a reactor Add the water required in the above formula (leave an appropriate amount of water to configure the caustic soda solution) and vegetable oil leftovers, and configure the caustic soda into a 30% aqueous solution while heating. When the temperature in the reactor reaches 55°C, slowly add the prepared Caustic soda solution, stir while adding, keep the temperature at 55°~60°C after the addition, and keep stirring for 60 minutes, then remove the heat source, cool the reactor with circulating water if possible, let it cool naturally when the temperature is not When the temperature drops below 40°C, add triethanolamine and nonylphenol polyoxyethylene ether (OP-10) in the required ratio, and stir evenly to obtain the lubricating additive of the presen...

Embodiment 3

[0036] Ingredients as follows:

[0037] Vegetable oil waste 20%, triethanolamine 1%, caustic soda (NaOH) 4%, nonylphenol polyoxyethylene ether (OP-10) 0.5%, the rest is water, in a reactor that can be heated and stirred, such as a reactor Add the water required in the above formula (leave an appropriate amount of water to configure the caustic soda solution) and vegetable oil leftovers, and configure the caustic soda into a 30% aqueous solution while heating. When the temperature in the reactor reaches 55°C, slowly add the prepared Caustic soda solution, stir while adding, keep the temperature at 55°~60°C after adding, and keep stirring for 70 minutes, then remove the heat source, cool the reactor with circulating water if possible, let it cool naturally when the temperature is not When the temperature drops below 40°C, add triethanolamine and nonylphenol polyoxyethylene ether (OP-10) in the required ratio, and stir evenly to obtain the lubricating additive of the present inve...

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Abstract

The invention relates to a drilling fluid lubricating additive and a preparation method thereof, which is characterized in that 20% to 40% of vegetable oil scraps, 1% to 2% of triethanolamine, 4% to 8% of caustic soda (NaOH) and nonylphenol polyoxyethylene Ether (OP-10) 0.5% ~ 0.8%, the rest is water, the lubricant uses the leftovers when refining edible vegetable oil to replace petroleum products, and forms an anionic surfactant and nonionic surfactant through two-step saponification And non-ionic surfactant in one, it has good lubrication and drag reduction effect, and its ability to resist salt and calcium ion erosion is very strong. More importantly, this lubricating additive does not contain any non-biodegradable mineral oil substances, can meet the requirements of environmental protection, and solves the problem of disposal of vegetable oil waste that pollutes the environment. It is easy to use and can be directly added to the formulated oil. good drilling fluid.

Description

technical field [0001] The invention relates to a drilling fluid lubricating additive which uses leftovers of refined edible vegetable oil to replace petroleum products and a preparation method thereof. Background technique [0002] With the acceleration of my country's oil development, especially the implementation of the strategic plan of "stabilizing the east and developing the west", the drilling tasks of deep wells, ultra-deep wells and wells with complex structures have increased rapidly, and the frictional resistance of drilling tools during drilling has also increased. The magnitude increases, the energy consumption increases, and the resulting drilling tool wear and failure accidents are also on the rise. In order to solve this problem, the current common practice is to add a certain amount of lubricating drag reducer to the drilling fluid to reduce the friction between the drill bit and the bottom hole rock, the drill string and the wall rock, the drill string and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035
Inventor 宋生印
Owner BC P INC CHINA NAT PETROLEUM CORP
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