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Particle stabilized emulsion system and method for preparing same and its use as lubricant for drilling fluid

An emulsion system, a stable technology, applied in the direction of drilling equipment, etc., can solve the problems of hindering oil and gas display, unusable, weak shear resistance and extrusion resistance, etc., and achieve regular well diameter, narrow particle size distribution and simple operation Effect

Inactive Publication Date: 2005-11-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the commonly used solid lubricants, graphite powder has the highest lubricating performance, its elasticity is very good, and it does not affect the rheology of drilling fluid at high concentrations, but its shear resistance and extrusion resistance are weak; while mineral oil and vegetable oil It has high lubricity and can form an oil film on the metal surface to reduce friction, but it cannot be used in reservoir drilling and exploratory drilling because it will hinder oil and gas display

Method used

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  • Particle stabilized emulsion system and method for preparing same and its use as lubricant for drilling fluid
  • Particle stabilized emulsion system and method for preparing same and its use as lubricant for drilling fluid
  • Particle stabilized emulsion system and method for preparing same and its use as lubricant for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The particle-stabilized emulsion system is an emulsion with an average particle size of 5-20 μm. The components are as follows, all in parts by weight, and the total amount is 100 parts:

[0039] 30 parts of mineral oil or solid paraffin, 1 part of carboxylate anionic surfactant sodium oleate, 2 parts of nano-active particle synthetic hectorite, and 67 parts of water.

[0040] Preparation:

[0041] Add 2 parts of synthetic laponite of nano-active particles into 67 parts of water, and stir for 30 minutes on a high-speed mixer at 2000 rpm; Add 30 parts of paraffin into the reactor, then add the nano-active particle synthetic laponite suspension prepared in the previous step into the reactor, stir at 1000rpm, and gradually add 1 part of carboxylate anionic surfactant sodium oleate to the reaction In the container; the speed is gradually increased to 4500rpm, the temperature is raised to 50°C, and the stirring time is controlled within 60min; observe the flow of the emulsi...

Embodiment 2

[0059] As described in Example 1, the difference is:

[0060] The particle-stabilized emulsion system is an emulsion with an average particle size of 5-10 μm. The components are as follows, all in parts by weight, and the total amount is 100 parts:

[0061] 10 parts of mineral oil or solid paraffin, 1 part of carboxylate anionic surfactant sodium oleate, 2 parts of nano-active particle synthetic hectorite, and 87 parts of water.

[0062] Oil ratio (w / w)

Embodiment 3

[0064] As described in Examples 1 and 2, the difference is:

[0065] The particle-stabilized emulsion system is an emulsion with an average particle diameter of 30-40nm. The components are as follows, all in parts by weight, and the total amount is 100 parts:

[0066] 40 parts of mineral oil or solid paraffin, 1 part of carboxylate anionic surfactant sodium oleate, 3 parts of nano-active particle synthetic hectorite, and 56 parts of water.

[0067] Oil ratio (w / w)

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Abstract

The invention discloses a particle stabilized emulsion system, wherein calculated by 100 weight parts, the constituents include mineral oil or solid paraffin 10-40 parts, anionic surface active agent 0.5-1.0 part, reactive nano solid particle 0.5-5 parts, and balancing water. The invention also discloses the process for preparing the emulsion system.

Description

technical field [0001] The invention relates to a particle-stabilized emulsion and a preparation method thereof, in particular to a particle-stabilized emulsion used in petroleum drilling engineering, a preparation method thereof and an application as a drilling fluid lubricant. Background technique [0002] In oil drilling engineering, drilling fluid is essential. It can carry and suspend cuttings, stabilize the well wall and balance the formation pressure, cool and lubricate the drill bit and drilling tools, and transmit hydrodynamic force. The performance of the drilling fluid directly affects the quality of the well and the drilling speed. Moreover, due to the large friction between the drilling fluid and the drill string, the drill pipe and the drill wall, local heating will be uneven and the life of the drill pipe and drill bit will be shortened. [0003] With the popularization and application of directional drilling technology, especially the requirement for reducin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
Inventor 孙德军李财富蓝强魏芳苏长明
Owner SHANDONG UNIV
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