A kind of elastic graphite and preparation method thereof

A technology of elastic graphite and petroleum coke, which is applied in the field of elastic graphite and its preparation, can solve problems such as reducing the friction coefficient, and achieve the effects of improving lubrication performance, reducing frictional resistance, and increasing pressure

Active Publication Date: 2021-11-09
天津渤海中联石油科技有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

High-quality lubricants in drilling fluids have the potential to reduce friction but not wear

Method used

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Embodiment Construction

[0017] Specific embodiments of the invention will be described in detail below.

[0018] A kind of its preparation method of elastic graphite, preparation method comprises the steps:

[0019] 1) Using petroleum coke and petroleum pitch as raw materials, the raw materials are crushed, mixed and kneaded and then formed at one time.

[0020] 2) The raw materials are pulverized after primary molding, and the secondary molding is completed after adding auxiliary materials that are helpful for kneading. The auxiliary materials include carbon binders.

[0021] 3) High-temperature graphitization roasting at 1900°C-2700°C. Under high temperature conditions, petroleum coke undergoes severe pyrolysis and polycondensation reactions, and its structure is constantly rearranged, gradually tending to order and densification, and its structure is orderly And the degree of densification is improved, and the arrangement of carbon atoms is in the microscopic form of graphite.

[0022] 4), pulve...

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Abstract

The invention provides a method for preparing elastic graphite. The preparation method includes the following steps: using petroleum coke and petroleum pitch as raw materials, crushing the raw materials, mixing and kneading them and molding them at one time; crushing the raw materials after molding them at one time, and adding them to facilitate kneading The secondary molding is completed after the auxiliary materials are used; high-temperature graphitization roasting is carried out at a temperature of 1900°C-2700°C; the elastic graphite raw material is obtained after crushing and screening; the elastic graphite raw material is added to the mixer for mixing, and the fineness is qualified. Package. The advantages and positive effects of the present invention are: the elastic graphite prepared by the present invention is used to prevent the leakage of porous and fractured formations in water-based or oil-based mud systems, and to help seal porous and wide-cracked formations for water Or oil-based mud leak-proof design.

Description

technical field [0001] The invention relates to the technical field of lubricants, in particular to an elastic graphite and a preparation method thereof. Background technique [0002] With the continuous development of horizontal wells, high-inclination wells, deep wells and extended-reach wells, and the increasing requirements for environmental protection, the variety of lubricants has been updated rapidly. In the past ten years, solid lubricants have developed the fastest, and several lubricating materials such as plastic balls, glass beads and graphite have appeared. Studies have shown that the amount of wear of casing metal is related to the energy consumed by friction during the wear process. High-quality lubricants in drilling fluids have the potential to reduce the coefficient of friction, but not the wear. While solid lubricants can create physical separation between two contact surfaces, liquids cannot. Flexible graphite (elastic graphite), an engineering lubrica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/205
CPCC01B32/205Y02P20/141
Inventor 高宏波
Owner 天津渤海中联石油科技有限公司
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