Glue injection process of impregnated polycrystalline diamond bearing for rotary steering tool

Abstract

The invention provides a glue injection process of an impregnated polycrystalline diamond bearing for a rotary steering tool, and relates to the technical field of bearing machining. The glue injection process comprises the following steps: a preparation stage: selecting a proper polycrystalline diamond impregnated material and other components of the bearing, cleaning the surfaces of all the materials and the components, and removing oil stains on the surfaces of the components; in the assembling stage, the polycrystalline diamond impregnated material is installed at the corresponding position of the bearing through brazing according to the design requirement; a glue injection stage; a curing stage; and a post-processing stage. The glue injection material is heated to proper temperature and pressure, and is uniformly injected into the interface between the impregnated polycrystalline diamond material and the matrix in a negative pressure environment, so that gaps in the bearing can be effectively filled, the stress concentration phenomenon is reduced, and the overall stability and reliability of the bearing are improved.

Description

Technical Field

[0001] The invention relates to the technical field of bearing processing, in particular to a glue injection process for a polycrystalline diamond impregnated bearing for a rotary guide tool. Background Art

[0002] Rotary steerable tools play an important role in oil and gas drilling. They need to work under harsh conditions of high temperature, high pressure, corrosive chemicals and high loads. Under these conditions, the performance of the bearing is critical. Impregnated polycrystalline diamond bearings are widely used in rotary steerable tools due to their excellent performance.

[0003] In the prior art, the diamond material and the bearing are generally fixed and connected by a glue injection process. However, in the prior art, bubbles are easily generated inside the glue injection material, which greatly reduces the performance and bonding performance of the glue injection material. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a glue injection process for a polycrystalline diamond impregnated bearing for a rotary guide tool, which solves the problem that bubbles are easily generated inside the glue injection material in the prior glue injection process.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A glue injection process for a polycrystalline diamond impregnated bearing for a rotary guide tool comprises the following steps:

[0008] Preparation stage: Select appropriate polycrystalline diamond impregnated materials and other bearing components, clean the surfaces of all materials and components, and remove oil stains on the surfaces of components;

[0009] Assembly stage: Install the impregnated polycrystalline diamond material in the corresponding position of the bearing according to the design requirements through brazing; perform preliminary assembly of the bearing to ensure the matching accuracy and stability between the components.

[0010] Injection stage: The injection material is heated to a suitable temperature and pressure so that it can fully fill the gap inside the bearing. The injection material is evenly injected into the interface between the impregnated polycrystalline diamond material and the matrix in a negative pressure environment through a robotic arm and injection equipment or tools to ensure that there are no bubbles in the injection material and improve the injection quality;

[0011] Curing stage: Place the injected bearing in a suitable environment for curing. During the curing process, keep the environment stable and avoid vibration and impact to ensure that the adhesive can be cured evenly.

[0012] Post-processing stage: After curing is completed, the bearings are post-processed to improve the surface quality and precision of the bearings, and the bearings are quality tested.

[0013] Preferably, the diamond material in the preparation stage is sintered from artificial diamond powder and a binder under high temperature and high pressure conditions, which can effectively reduce the cost of the diamond material and the stability of the overall properties.

[0014] Preferably, the other components of the bearing include a rotating bearing ring and a stationary bearing ring, which can effectively maintain the stability of the overall structure of the bearing.

[0015] Preferably, the injection material is formed by mixing epoxy resin and EPDM rubber, and the weight ratio of epoxy resin to EPDM rubber is (2-4):1, thereby improving the aging resistance, chemical stability and mechanical properties of the injection material.

[0016] Preferably, the injection temperature of the injection material is set to 280-340° C., and the injection pressure of the injection material is set to 6-18 kgf, which can effectively improve the injection quality.

[0017] Preferably, the bearing after injection is placed in a vacuum environment to avoid bubbles in the injection during the curing process, and the curing temperature is set to 30-45° C. so that the injection material can be uniformly cured.

[0018] Preferably, the quality inspection of the bearing includes appearance inspection, dimension measurement, and performance testing to ensure that the bearing meets the design requirements and usage standards, which can effectively improve the quality of the bearing.

[0019] Preferably, the bearing post-processing operations include removing excess glue, removing burrs and grinding the surface, which can effectively improve the processing quality of the bearing.

[0020] (III) Beneficial effects

[0021] The present invention provides a glue injection process for a polycrystalline diamond impregnated bearing for a rotary guide tool. It has the following beneficial effects:

[0022] 1. The injection process heats the injection material to a suitable temperature and pressure, and evenly injects it into the interface between the impregnated polycrystalline diamond material and the matrix in a negative pressure environment, which can effectively fill the gap inside the bearing, reduce stress concentration, and thus improve the overall stability and reliability of the bearing.

[0023] 2. The polycrystalline diamond material impregnated in the injection process itself has high hardness and wear resistance, and the composite material formed by mixing the epoxy resin and EPDM rubber in the injection process further improves the mechanical properties of the bearing and enhances its wear resistance. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1:

[0026] An embodiment of the present invention provides a glue injection process for a polycrystalline diamond impregnated bearing for a rotary guide tool, comprising the following steps:

[0027] Preparation stage: Select appropriate impregnated polycrystalline diamond material and other components of the bearing, and clean the surface of all materials and components to remove oil stains on the surface of the components. In the preparation stage, the diamond material is sintered by artificial diamond powder and a binder under high temperature and high pressure conditions, which can effectively reduce the cost of the diamond material and the stability of the overall properties. The other components of the bearing include a rotating bearing ring and a stationary bearing ring, which can effectively maintain the stability of the overall structure of the bearing.

[0028] Assembly stage: install the impregnated polycrystalline diamond material at the corresponding position of the bearing according to the design requirements through brazing; perform preliminary assembly of the bearing to ensure the matching accuracy and stability between the components. The injection material is made by mixing epoxy resin and EPDM rubber, and the weight ratio of epoxy resin to EPDM rubber is 2:1, so as to improve the aging resistance, chemical stability and mechanical properties of the injection material. The injection temperature of the injection material is set to 280°C, and the injection pressure of the injection material is set to 12kgf, which can effectively improve the injection quality.

[0029] Injection stage: The injection material is heated to a suitable temperature and pressure so that it can fully fill the gap inside the bearing. The injection material is evenly injected into the interface between the impregnated polycrystalline diamond material and the matrix in a negative pressure environment through a robotic arm and injection equipment or tools to ensure that there are no bubbles in the injection material and improve the injection quality;

[0030] Curing stage: Place the injected bearing in a suitable environment for curing. During the curing process, keep the environment stable and avoid vibration and impact to ensure that the adhesive can be cured evenly. The injected bearing is placed in a vacuum environment to avoid bubbles in the injected glue during the curing process. The curing temperature is set to 40°C so that the injected material can be cured evenly.

[0031] Post-processing stage: After curing is completed, the bearing is post-processed to improve the surface quality and precision of the bearing, and the bearing is quality tested. The bearing quality test includes appearance inspection, dimension measurement, and performance test to ensure that the bearing meets the design requirements and use standards, which can effectively improve the bearing quality. The bearing post-processing operations include removing excess glue, deburring, and grinding the surface, which can effectively improve the processing quality of the bearing.

[0032] Embodiment 2:

[0033] An embodiment of the present invention provides a glue injection process for a polycrystalline diamond impregnated bearing for a rotary guide tool, comprising the following steps:

[0034] Preparation stage: Select appropriate impregnated polycrystalline diamond material and other components of the bearing, and clean the surface of all materials and components to remove oil stains on the surface of the components. In the preparation stage, the diamond material is sintered by artificial diamond powder and a binder under high temperature and high pressure conditions, which can effectively reduce the cost of the diamond material and the stability of the overall properties. The other components of the bearing include a rotating bearing ring and a stationary bearing ring, which can effectively maintain the stability of the overall structure of the bearing.

[0035] Assembly stage: install the impregnated polycrystalline diamond material at the corresponding position of the bearing according to the design requirements through brazing; perform preliminary assembly of the bearing to ensure the matching accuracy and stability between the components. The injection material is made by mixing epoxy resin and EPDM rubber, and the weight ratio of epoxy resin to EPDM rubber is 3:1, so as to improve the aging resistance, chemical stability and mechanical properties of the injection material. The injection temperature of the injection material is set to 280°C, and the injection pressure of the injection material is set to 12kgf, which can effectively improve the injection quality.

[0036] Injection stage: The injection material is heated to a suitable temperature and pressure so that it can fully fill the gap inside the bearing. The injection material is evenly injected into the interface between the impregnated polycrystalline diamond material and the matrix in a negative pressure environment through a robotic arm and injection equipment or tools to ensure that there are no bubbles in the injection material and improve the injection quality;

[0037] Curing stage: Place the injected bearing in a suitable environment for curing. During the curing process, keep the environment stable and avoid vibration and impact to ensure that the adhesive can be cured evenly. The injected bearing is placed in a vacuum environment to avoid bubbles in the injected glue during the curing process. The curing temperature is set to 40°C so that the injected material can be cured evenly.

[0038] Post-processing stage: After curing is completed, the bearing is post-processed to improve the surface quality and precision of the bearing, and the bearing is quality tested. The bearing quality test includes appearance inspection, dimension measurement, and performance test to ensure that the bearing meets the design requirements and use standards, which can effectively improve the bearing quality. The bearing post-processing operations include removing excess glue, deburring, and grinding the surface, which can effectively improve the processing quality of the bearing.

[0039] Embodiment three:

[0040] An embodiment of the present invention provides a glue injection process for a polycrystalline diamond impregnated bearing for a rotary guide tool, comprising the following steps:

[0041] Preparation stage: Select appropriate impregnated polycrystalline diamond material and other components of the bearing, and clean the surface of all materials and components to remove oil stains on the surface of the components. In the preparation stage, the diamond material is sintered by artificial diamond powder and a binder under high temperature and high pressure conditions, which can effectively reduce the cost of the diamond material and the stability of the overall properties. The other components of the bearing include a rotating bearing ring and a stationary bearing ring, which can effectively maintain the stability of the overall structure of the bearing.

[0042] Assembly stage: install the impregnated polycrystalline diamond material at the corresponding position of the bearing according to the design requirements through brazing; perform preliminary assembly of the bearing to ensure the matching accuracy and stability between the components. The injection material is made by mixing epoxy resin and EPDM rubber, and the weight ratio of epoxy resin to EPDM rubber is 3:1, so as to improve the aging resistance, chemical stability and mechanical properties of the injection material. The injection temperature of the injection material is set to 280°C, and the injection pressure of the injection material is set to 12kgf, which can effectively improve the injection quality.

[0043] Injection stage: The injection material is heated to a suitable temperature and pressure so that it can fully fill the gap inside the bearing. The injection material is evenly injected into the interface between the impregnated polycrystalline diamond material and the matrix in a negative pressure environment through a robotic arm and injection equipment or tools to ensure that there are no bubbles in the injection material and improve the injection quality;

[0044] Curing stage: Place the injected bearing in a suitable environment for curing. During the curing process, keep the environment stable and avoid vibration and impact to ensure that the adhesive can be cured evenly. The injected bearing is placed in a vacuum environment to avoid bubbles in the injected glue during the curing process. The curing temperature is set to 35°C so that the injected material can be cured evenly.

[0045] Post-processing stage: After curing is completed, the bearing is post-processed to improve the surface quality and precision of the bearing, and the bearing is quality tested. The bearing quality test includes appearance inspection, dimension measurement, and performance test to ensure that the bearing meets the design requirements and use standards, which can effectively improve the bearing quality. The bearing post-processing operations include removing excess glue, deburring, and grinding the surface, which can effectively improve the processing quality of the bearing.

[0046] Embodiment 4:

[0047] An embodiment of the present invention provides a glue injection process for a polycrystalline diamond impregnated bearing for a rotary guide tool, comprising the following steps:

[0048] Preparation stage: Select appropriate impregnated polycrystalline diamond material and other components of the bearing, and clean the surface of all materials and components to remove oil stains on the surface of the components. In the preparation stage, the diamond material is sintered by artificial diamond powder and a binder under high temperature and high pressure conditions, which can effectively reduce the cost of the diamond material and the stability of the overall properties. The other components of the bearing include a rotating bearing ring and a stationary bearing ring, which can effectively maintain the stability of the overall structure of the bearing.

[0049] Assembly stage: install the impregnated polycrystalline diamond material at the corresponding position of the bearing according to the design requirements through brazing; perform preliminary assembly of the bearing to ensure the matching accuracy and stability between the components. The injection material is made by mixing epoxy resin and EPDM rubber, and the weight ratio of epoxy resin to EPDM rubber is 4:1, so as to improve the aging resistance, chemical stability and mechanical properties of the injection material. The injection temperature of the injection material is set to 300°C, and the injection pressure of the injection material is set to 18kgf, which can effectively improve the injection quality.

[0050] Injection stage: The injection material is heated to a suitable temperature and pressure so that it can fully fill the gap inside the bearing. The injection material is evenly injected into the interface between the impregnated polycrystalline diamond material and the matrix in a negative pressure environment through a robotic arm and injection equipment or tools to ensure that there are no bubbles in the injection material and improve the injection quality;

[0051] Curing stage: Place the injected bearing in a suitable environment for curing. During the curing process, keep the environment stable and avoid vibration and impact to ensure that the adhesive can be cured evenly. The injected bearing is placed in a vacuum environment to avoid bubbles in the injected glue during the curing process. The curing temperature is set to 40°C so that the injected glue material can be cured evenly.

[0052] Post-processing stage: After curing is completed, the bearing is post-processed to improve the surface quality and precision of the bearing, and the bearing is quality tested. The bearing quality test includes appearance inspection, dimension measurement, and performance test to ensure that the bearing meets the design requirements and use standards, which can effectively improve the bearing quality. The bearing post-processing operations include removing excess glue, deburring, and grinding the surface, which can effectively improve the processing quality of the bearing.

[0053] Embodiment five:

[0054] An embodiment of the present invention provides a glue injection process for a polycrystalline diamond impregnated bearing for a rotary guide tool, comprising the following steps:

[0055] Preparation stage: Select appropriate impregnated polycrystalline diamond material and other components of the bearing, and clean the surface of all materials and components to remove oil stains on the surface of the components. In the preparation stage, the diamond material is sintered by artificial diamond powder and a binder under high temperature and high pressure conditions, which can effectively reduce the cost of the diamond material and the stability of the overall properties. The other components of the bearing include a rotating bearing ring and a stationary bearing ring, which can effectively maintain the stability of the overall structure of the bearing.

[0056] Assembly stage: install the impregnated polycrystalline diamond material at the corresponding position of the bearing according to the design requirements through brazing; perform preliminary assembly of the bearing to ensure the matching accuracy and stability between the components. The injection material is made by mixing epoxy resin and EPDM rubber, and the weight ratio of epoxy resin to EPDM rubber is 3:1, so as to improve the aging resistance, chemical stability and mechanical properties of the injection material. The injection temperature of the injection material is set to 340°C, and the injection pressure of the injection material is set to 12kgf, which can effectively improve the injection quality.

[0057] Injection stage: The injection material is heated to a suitable temperature and pressure so that it can fully fill the gap inside the bearing. The injection material is evenly injected into the interface between the impregnated polycrystalline diamond material and the matrix in a negative pressure environment through a robotic arm and injection equipment or tools to ensure that there are no bubbles in the injection material and improve the injection quality;

[0058] Curing stage: Place the injected bearing in a suitable environment for curing. During the curing process, keep the environment stable and avoid vibration and impact to ensure that the adhesive can be cured evenly. The injected bearing is placed in a vacuum environment to avoid bubbles in the injected glue during the curing process. The curing temperature is set to 30°C so that the injected material can be cured evenly.

[0059] Post-processing stage: After curing is completed, the bearing is post-processed to improve the surface quality and precision of the bearing, and the bearing is quality tested. The bearing quality test includes appearance inspection, dimension measurement, and performance test to ensure that the bearing meets the design requirements and use standards, which can effectively improve the bearing quality. The bearing post-processing operations include removing excess glue, deburring, and grinding the surface, which can effectively improve the processing quality of the bearing.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A glue injection process for polycrystalline diamond impregnated bearings for rotary guide tools, characterized in that: The following steps are involved: Preparation stage: Select appropriate polycrystalline diamond impregnated materials and other bearing components, clean the surfaces of all materials and components, and remove oil stains on the surfaces of components; Assembly stage: install the impregnated polycrystalline diamond material in the corresponding position of the bearing according to the design requirements through brazing; Injection stage: The injection material is heated to a suitable temperature and pressure so as to fully fill the gap inside the bearing. The injection material is uniformly injected into the interface between the impregnated polycrystalline diamond material and the matrix in a negative pressure environment through a robotic arm and injection equipment or tools; Curing stage: Place the injected bearing in a suitable environment for curing; Post-processing stage: After curing is completed, the bearings are post-processed and quality tested.

2. The glue injection process of a polycrystalline diamond impregnated bearing for a rotary guide tool according to claim 1 is characterized in that: The diamond material in the preparation stage is sintered by artificial diamond powder and a binder under high temperature and high pressure conditions.

3. The glue injection process of a polycrystalline diamond impregnated bearing for a rotary guide tool according to claim 1 is characterized in that: Other components of the bearing include a rotating bearing ring and a stationary bearing ring.

4. The glue injection process of a polycrystalline diamond impregnated bearing for a rotary guide tool according to claim 1, characterized in that: The injection material is formed by mixing epoxy resin and EPDM rubber, and the weight ratio of the epoxy resin to the EPDM rubber is (2-4):

1.

5. The glue injection process of the polycrystalline diamond impregnated bearing for a rotary guide tool according to claim 1, characterized in that: The injection temperature of the injection material is set to 280-340° C., and the injection pressure of the injection material is set to 6-18 kgf.

6. The glue injection process of the polycrystalline diamond impregnated bearing for a rotary guide tool according to claim 1, characterized in that: The bearing after glue injection is placed in a vacuum environment, and the curing temperature is set to 30-45°C.

7. The glue injection process of a polycrystalline diamond impregnated bearing for a rotary guide tool according to claim 1, characterized in that: The quality inspection of the bearings includes appearance inspection, dimension measurement, and performance testing to ensure that the bearings meet the design requirements and usage standards.

8. The glue injection process of the polycrystalline diamond impregnated bearing for a rotary guide tool according to claim 1, characterized in that: The bearing post-processing operations include removing excess glue, removing burrs and grinding the surface.