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Plastic ball solid lubricating agent for drilling fluid and method for preparing plastic ball solid lubricating agent

A technology of solid lubricants and plastic balls, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as limited resistance to temperature, extrusion resistance, restrictions, uneven density distribution, etc., to achieve improved resistance High temperature performance and anti-extrusion performance, effective lubrication and anti-seize effect

Active Publication Date: 2013-04-03
河北华运鸿业化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the plastic ball solid lubricant for drilling fluid produced by the current technology has limited temperature resistance and extrusion resistance, uneven and low particle size, and easily uneven density distribution, which cannot fully meet the needs of drilling engineering; at the same time, due to the existing The density of the plastic balls is too high, they are easy to sink in the drilling fluid, and the distribution is uneven, which limits the application of the plastic balls as a solid lubricant in the drilling fluid.

Method used

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  • Plastic ball solid lubricating agent for drilling fluid and method for preparing plastic ball solid lubricating agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] One, the preparation raw material of the plastic ball solid lubricant for drilling fluid of the present embodiment is by weight:

[0021] 35 parts of styrene, 10 parts of divinylbenzene, 5 parts of acrylic acid, 5 parts of polytetrafluoroethylene, 10 parts of paraffin, 15 parts of silicon dioxide, 0.5 parts of benzoyl peroxide, 0.5 parts of polyvinyl alcohol, lauryl 0.5 parts of benzenesulfonic acid.

[0022] Two, the preparation method of the plastic ball solid lubricant for drilling fluid of the present embodiment is:

[0023] (a) Deblocking: Styrene and divinylbenzene are filtered with 201 resin column to remove their own polymerization inhibitors;

[0024] (b) Soaking: put styrene, divinylbenzene, acrylic acid, polytetrafluoroethylene, paraffin, silicon dioxide and benzoyl peroxide into the reaction kettle after weighing according to the proportion, add 2 times the weight of the solid material to remove Ionized water, soak for 30 minutes at 20°C;

[0025] (c) Cro...

Embodiment 2

[0029] One, the preparation raw material of the plastic ball solid lubricant for drilling fluid of the present embodiment is by weight:

[0030] 45 parts of styrene, 8 parts of divinylbenzene, 10 parts of acrylic acid, 7 parts of polytetrafluoroethylene, 15 parts of paraffin, 12 parts of silicon dioxide, 0.7 parts of benzoyl peroxide, 0.5 parts of polyvinyl alcohol, lauryl 0.8 parts of benzenesulfonic acid.

[0031] Two, the preparation method of the plastic ball solid lubricant for drilling fluid of the present embodiment is:

[0032] (a) Deblocking: Styrene and divinylbenzene are filtered with 201 resin column to remove their own polymerization inhibitors;

[0033] (b) Soaking: Styrene, divinylbenzene, acrylic acid, polytetrafluoroethylene, paraffin, silicon dioxide and benzoyl peroxide are weighed in proportion and put into the reaction kettle, and 2.5 times the weight of the solid material is added to remove Ionized water, soak for 30 minutes at 10°C;

[0034] (c) Cross...

Embodiment 3

[0038] 1. The drilling solution of this embodiment of the preparation raw material for the plastic ball solid lubricant is based on the weight of the weight:

[0039] 56 parts of styrene, 6 parts of divinylbenzene, 9 parts of acrylic acid, 10 parts of polytetrafluoroethylene, 12 parts of paraffin, 10 parts of silicon dioxide, 0.9 parts of benzoyl peroxide, 0.8 parts of polyvinyl alcohol, lauryl 1.2 parts of benzenesulfonic acid.

[0040] Second, the preparation method of the drilling solution of the plastic ball solid lubricant of this embodiment is:

[0041] (A) Desert: The vertical vector that comes with the 201 resin column filter with the 201 resin column;

[0042] (b) Soaking: put styrene, divinylbenzene, acrylic acid, polytetrafluoroethylene, paraffin, silicon dioxide and benzoyl peroxide into the reaction kettle after weighing according to the proportion, add 2 times the weight of the solid material to remove Ionized water, soak for 20 minutes at 25°C;

[0043] (c) C...

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Abstract

The invention discloses a plastic ball solid lubricating agent for drilling fluid and a method for preparing the plastic ball solid lubricating agent. The plastic ball solid lubricating agent for the drilling fluid is prepared from the raw materials in parts by weight: 35-56 parts of styrene, 6-10 parts of divinylbenzene, 5-10 parts of acrylic acid, 5-10 parts of polytetrafluoroethylene, 10-20 parts of paraffin, 10-15 parts of silicon dioxide, 0.5-1 part of benzoyl peroxide, 0.5-1 part of polyvinyl alcohol and 0.5-1.5 parts of dodecylbenzene sulfonic acid. The method for preparing the plastic ball solid lubricating agent comprises the following five steps of resistance removing, soaking, crosslinking, sepherical boiling and grading. The high temperature resistance and extrusion resistance of the plastic ball solid lubricating agent for the drilling fluid are improved, the density is close to water density, and the plastic ball solid lubricating agent can realize the purposes of effectively lubricating and preventing blockaged.

Description

technical field [0001] The invention relates to a solid lubricant for drilling fluid, in particular to a plastic ball solid lubricant for drilling fluid and a preparation method thereof. Background technique [0002] Drilling fluid is essential in oil drilling operations. It can carry and suspend cuttings, stabilize well walls and balance formation pressure, cool and lubricate drill bits and tools, and transmit hydrodynamic forces. The quality of the drilling fluid directly affects the quality of the wellbore and the drilling speed. At the same time, with the development of oil exploration, the drilling depth continues to increase, and the number of cluster wells, highly deviated directional wells and horizontal wells also increases rapidly. Poor sticking of the drill, reducing the torque of the drilling tool and reducing the wear of the drill string have become problems that need to be solved urgently in drilling operations. [0003] Adding lubricant to the drilling fluid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035
Inventor 张占山张学良张学军
Owner 河北华运鸿业化工有限公司
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