Strongly adsorbent solid lubricant for drilling fluid and synthesis method of solid lubricant

A solid lubricant and strong adsorption technology, which is applied in the field of lubricant research, can solve the problems of inability to form a strong adsorption film, removal, poor filtration performance and plugging and anti-slump performance, and achieve tight combination, reduced dosage, and good The effect of anti-collapse

Active Publication Date: 2015-12-30
西安长庆化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems that the existing drilling fluid lubricant is easily removed by solid control equipment, cannot form a strong adsorption film on the metal surface and the surface of drilling fluid solid particles, and has poor filtration loss reduction performance and plugging and anti-collapse performance

Method used

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  • Strongly adsorbent solid lubricant for drilling fluid and synthesis method of solid lubricant
  • Strongly adsorbent solid lubricant for drilling fluid and synthesis method of solid lubricant

Examples

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Embodiment 1

[0027] In order to overcome the problems that the existing drilling fluid lubricant is easily removed by solid control equipment, cannot form a strong adsorption film on the metal surface and the surface of drilling fluid solid particles, and has poor filtration loss reduction performance and plugging and anti-slump performance.

[0028] This embodiment provides a strong adsorption solid lubricant for drilling fluid, comprising the following components: by weight, 100-300 parts of reaction carrier, 2-15 parts of organic solvent, 15-50 parts of monomer, 50-200 parts Part penetrant, 0.01-0.05 part initiator, 1-5 part surfactant, 100-300 part water.

[0029] This drilling fluid of the present invention uses strong adsorption solid lubricant synthetic method to comprise the steps:

[0030] Step 1) Prepare the following components by weight: reaction carrier: 100-300 parts, organic solvent: 2-15 parts, monomer: 15-50 parts, penetrant: 50-200 parts, initiator: 0.01-0.05 parts parts...

Embodiment 2

[0037] This embodiment provides a kind of strong adsorption solid lubricant for drilling fluid, and its synthesis method is as follows:

[0038] Add 100 parts of reaction carrier, 2 parts of organic solvent, 1 part of surfactant and 100 parts of water into a three-necked flask, stir at a speed of 10,000 rpm for 10 minutes, and keep the temperature at 20°C. Next, add 15 parts of monomer and 0.01 part of initiator and stir. After passing nitrogen for 30 minutes, the system becomes viscous and then add 50 parts of penetrating agent. After bed drying, a granular finished product is obtained.

[0039] Among them, as a preferred embodiment,

[0040] The reaction carrier is selected layered graphite;

[0041] Described organic solvent selects sorbitan stearate or alkylphenol polyoxyethylene ether;

[0042] The monomer is selected from acrylic acid or methacrylic acid;

[0043] The penetrating agent is selected fatty alcohol polyoxyethylene ether;

[0044] Described initiator sel...

Embodiment 3

[0051] This embodiment provides a kind of strong adsorption solid lubricant for drilling fluid, and its synthesis method is as follows:

[0052] Add 200 parts of reaction carrier, 10 parts of organic solvent, 3 parts of surfactant and 200 parts of water into a three-necked flask, stir for 15 minutes at a speed of 10,000 rpm, and keep the temperature at 25°C. Next, add 35 parts of monomer and 0.03 part of initiator, and stir. After passing nitrogen for 30 minutes, the system becomes viscous, then add 150 parts of penetrant, and at the same time pass nitrogen to seal. After bed drying, a granular finished product is obtained.

[0053] Among them, as a preferred embodiment:

[0054] The reaction carrier is selected asbestos;

[0055] Described organic solvent selects No. 26 white mineral oil or white petrolatum;

[0056] Described monomer selects maleic anhydride;

[0057]Described penetrating agent selects sodium alkyl sulfate;

[0058] Described initiator selects sodium bi...

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Abstract

The invention particularly discloses a strongly adsorbent solid lubricant for drilling fluid. The strongly adsorbent solid lubricant comprises the following components in parts by weight: 100 to 300 parts of reaction carrier, 2 to 15 parts of organic solvent, 15 to 50 parts of monomers, 50 to 200 parts of penetrant, 0.01 to 0.05 part of initiator, 1 to 5 parts of surfactant and 100 to 300 parts of water. The strongly adsorbent solid lubricant for the drilling fluid, which is disclosed by the invention, is easily available in raw materials and simple in synthesis method, has better adsorption performance compared with a common solid lubricant, is not easily removed by solid control equipment, can form a strong adsorption film on a metal surface and a solid particle surface of the drilling fluid, and simultaneously has the capability of improving the filtration reduction performance and blocking to prevent collapse.

Description

technical field [0001] The invention belongs to the field of lubricant research, and in particular relates to a strong adsorption solid lubricant for drilling fluid and a synthesis method thereof. Background technique [0002] At present, there are two main types of drilling fluid lubricants, namely solid and liquid. Graphite, plastic balls, glass balls and other solid lubricants are easily removed by solid control equipment during the drilling process due to the limitation of solid size, and may be damaged and deformed under the extrusion or vibration of the drill pipe. Ordinary graphite powder is used as a lubricant, the effect of reducing friction is not obvious, and the hydrophilicity is insufficient, and the dust during dosing will also pose a threat to the health of construction workers, so its use is subject to certain restrictions. For liquid lubricants, although it is convenient to use, there are many restrictions on the packaging, transportation and storage of liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03
CPCC09K8/03C09K2208/34
Inventor 朱趁安黄依理豆亚娟万华杨海燕叶智王卫军郝宗香何红民张辉
Owner 西安长庆化工集团有限公司
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