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Emulsifier composition and preparation method thereof

A technology of composition and emulsifier, which is applied in the field of drilling fluid, can solve the problems of unsatisfactory emulsification rate and electrical stability, and achieve the effects of increasing emulsification efficiency, simple preparation method, and easy maintenance of uniformity

Inactive Publication Date: 2016-04-27
天津滨海新区普瑞德石油科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is that the emulsifier used in the existing oil-based drilling fluid has unsatisfactory emulsification rate and electrical stability

Method used

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  • Emulsifier composition and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] An emulsifier composition comprising the following raw materials: 100kg of white oil, 60kg of tall oil, 10kg of fumaric acid, 6kg of diethylenetriamine, 8kg of tetraethylenepentamine, and 90kg of oxidatively polymerized fatty acid ester.

[0024] When preparing the above-mentioned emulsifier composition, (1) stir tall oil, diethylenetriamine and tetraethylenepentamine for 0.8h, stir evenly and then heat up to 110°C, and react for 2.5h; (2) to step (1) Add fumaric acid to the system, maintain the temperature for 1.5h; (3) add white oil and oxidatively polymerized fatty acid ester to the system in step (2), stir evenly, and cool down to room temperature to obtain the product.

[0025] Add the emulsifier composition obtained above at 3% of the weight of the oil-based drilling fluid, and the obtained product is used to test its performance.

Embodiment 2

[0027] An emulsifier composition comprising the following raw materials: 100kg of white oil, 65kg of tall oil, 12kg of fumaric acid, 8kg of diethylenetriamine, 10kg of tetraethylenepentamine, and 85kg of oxidatively polymerized fatty acid ester.

[0028] When preparing the above-mentioned drilling fluid, (1) stir tall oil, diethylenetriamine and tetraethylenepentamine for 1 hour, stir evenly, then raise the temperature to 115°C, and react for 3 hours; (2) add rich Maic acid, maintain the temperature for 2 hours; (3) Add white oil and oxidized polymerized fatty acid ester to the system in step (2), stir evenly and cool down to room temperature.

[0029] The emulsifier composition obtained above was added thereto at 4% by weight of the oil-based drilling fluid, and the obtained product was used to test its performance.

Embodiment 3

[0031] An emulsifier composition comprising the following raw materials: 100kg of white oil, 65kg of tall oil, 15kg of fumaric acid, 12kg of diethylenetriamine, 15kg of tetraethylenepentamine, and 82kg of oxidatively polymerized fatty acid ester.

[0032] When preparing the above drilling fluid, (1) Stir tall oil, diethylenetriamine and tetraethylenepentamine for 1.5h, stir well and then raise the temperature to 120°C, and react for 3h; (2) Add to the system in step (1) Fumaric acid, maintain the temperature for 2.5 hours; (3) add white oil and oxidized polymerized fatty acid ester to the system in step (2), stir evenly and cool down to room temperature.

[0033] Add the emulsifier composition obtained above at 3% of the weight of the oil-based drilling fluid, and the obtained product is used to test its performance.

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Abstract

The invention provides an emulsifier composition and a preparation method thereof, belonging to the technical field of drilling fluids. The emulsifier composition comprises a main emulsifier, an auxiliary emulsifier and base oil, wherein the main emulsifier is oxidatively polymerized fatty acid ester and the auxiliary emulsifier is polyamide. The emulsifier composition provided by the invention respectively uses oxidatively polymerized fatty acid ester and polyamide as the main emulsifier and the auxiliary emulsifier, so emulsification efficiency of the composition is improved, electrical stability of the composition is enhanced, and preparation and usage of oil-based drilling fluids are facilitated.

Description

technical field [0001] The invention relates to the field of drilling fluid technology, in particular to an emulsifier composition and a preparation method thereof. Background technique [0002] Drilling fluid is the circulating flushing medium used in the hole during the drilling process. Drilling fluid is recognized to have at least the following ten functions: (1) Clean the bottom of the well and carry cuttings. Keep the bottom of the well clean, avoid repeated cutting of the drill bit, reduce wear and improve efficiency; (2) Cool and lubricate the drill bit and drill string. Reduce the temperature of the drill bit, reduce the wear of the drilling tool, and increase the service life of the drilling tool; (3) balance the side pressure of the rock on the well wall, form a filter cake on the well wall, seal and stabilize the well wall. Prevent contamination of oil and gas formations and well wall collapse. (4) Balance (control) formation pressure. Prevent blowout, lost c...

Claims

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Application Information

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IPC IPC(8): C09K8/035C09K8/32
CPCC09K8/035C09K8/32
Inventor 周永
Owner 天津滨海新区普瑞德石油科技有限公司
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