Wear-resistant and erosion-resistant screw drill for in-situ mining of oil shale and machining technology

A technology for in-situ mining and screw drilling tools, which is used in earth-moving drilling, drilling equipment, directional drilling, etc., and can solve problems such as motor failure, high well pressure, and long operating time.

Pending Publication Date: 2021-12-21
YANCHENG HUAYA GASOLINEEUM MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Oil shale drilling is mostly horizontal directional wells with deep well positions and high well pressure. Due to formation reasons, the operation time is long and there are many cuttings, often accompanied by highly corrosive shale gas. Conventional screw drilling tool stators The inner lining is made of rubber material. Due to the high well pressure and lon

Method used

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  • Wear-resistant and erosion-resistant screw drill for in-situ mining of oil shale and machining technology
  • Wear-resistant and erosion-resistant screw drill for in-situ mining of oil shale and machining technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The processing technology of wear-resistant and corrosion-resistant screw drilling tools for in-situ mining of oil shale includes the following process steps:

[0026] (1), making non-rubber synthetic inner bushing:

[0027] Add 10% polytetrafluoroethylene, 12% 3-12mm aramid fiber 1313, 10% silicon carbide fiber with a diameter of 0.5-1.2μm and a length of 30-160μm, and 15% polymethyl methacrylate into the mixer High-speed mixing and stirring for 0.5h, high-speed shearing, adding 35% styrene to the evenly stirred mixture, adding 3% diethylenetriamine solubilizer, 5% molybdenum disulfide additive, 4% vulcanization accelerator, Put 4% dioctyl sebacate softener into the internal mixer at a temperature of 210°C, vulcanize after mixing for 2 hours, vulcanize for 12 hours, and vulcanize at a temperature of 160°C to make a non-rubber synthetic inner lining;

[0028] (2) Make the motor stator metal shell, motor rotor and rubber locking sleeve, set a locking slope at the end of...

Embodiment 2

[0032] The processing technology of wear-resistant and corrosion-resistant screw drilling tools for in-situ mining of oil shale includes the following process steps:

[0033] (1), making non-rubber synthetic inner bushing:

[0034] Add 15% polytetrafluoroethylene, 8% aramid fiber 1313 3-12mm, 15% silicon carbide fiber with a diameter of 0.5-1.2μm and a length of 30-160μm, and 19% polymethyl methacrylate into the mixer High-speed mixing and stirring for 0.5h, high-speed shearing, adding 30% styrene to the evenly stirred mixture, adding 4% diethylenetriamine solubilizer, 4% molybdenum disulfide additive, 3% vulcanization accelerator, Put 2% dioctyl sebacate softener into the internal mixer at a temperature of 25°C, vulcanize after mixing for 2 hours, vulcanize for 12 hours, and vulcanize at a temperature of 180°C to make a non-rubber synthetic inner lining;

[0035] (2) Make the motor stator metal shell, motor rotor and rubber locking sleeve, set a locking slope at the end of t...

Embodiment 3

[0039] The processing technology of wear-resistant and corrosion-resistant screw drilling tools for in-situ mining of oil shale includes the following process steps:

[0040] (1), making non-rubber synthetic inner bushing:

[0041] Add 10% polytetrafluoroethylene, 10% 3-12mm aramid fiber 1313, 18% silicon carbide fiber with a diameter of 0.5-1.2μm and a length of 30-160μm, and 20% polymethyl methacrylate into the mixer High-speed mixing and stirring for 0.5h, high-speed shearing, adding 30% styrene to the evenly stirred mixture, adding 3% diethylenetriamine solubilizer, 2% molybdenum disulfide additive, 5% vulcanization accelerator, Put 2% dioctyl sebacate softener into the internal mixer at a temperature of 280°C, vulcanize after mixing for 2.5 hours, vulcanize for 12 hours, and vulcanize at a temperature of 190°C to make a non-rubber synthetic inner lining;

[0042] (2) Make the motor stator metal shell, motor rotor and rubber locking sleeve, set a locking slope at the end ...

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Abstract

The invention discloses a wear-resistant and erosion-resistant screw drill for in-situ mining of oil shale and a machining technology. The wear-resistant and erosion-resistant screw drill comprises the following technology steps of (1) manufacturing a non-rubber synthetic neck bush, specifically, adding 10%-15% of polytetrafluoroethylene, 8%-12% of 3-12 millimeters aramid fiber 1313, 10%-18% of silicon carbide fiber with the diameter of 0.5-1.2 micro meters and the length of 30-160 micro meters and 15%-25% of polymethyl methacrylate into a mixer, mixing and stirring at a high speed for 0.5 hour, performing high-speed shearing, adding 30%-35% of styrene into the uniformly stirred mixture, adding 3%-4% of a diethylenetriamine solubilizer, 2%-5% of a molybdenum disulfide additive, 3%-5% of a vulcanization accelerator and 2%-4% of a dioctyl sebacate softener into an internal mixer, mixing for 2-2.5 hours at the temperature of 210-280 DEG C, and vulcanizing for 12 hours at the vulcanization temperature of 160-190 DEG C to prepare a non-rubber synthetic lining material; and (2) manufacturing a motor stator metal shell, a motor rotor and a rubber locking sleeve.

Description

technical field [0001] The invention relates to a wear-resistant and corrosion-resistant screw drilling tool for in-situ mining of oil shale and a processing technology. Background technique [0002] Petroleum is a non-renewable resource. With the rapid development of the economy, human demand for energy is increasing rapidly. The shale oil resource reserves are huge. The world's proven reserves are about 450 billion tons. In 2020, the world's shale oil supply has reached 2 million barrels per day is a reliable supplement to oil resources. Shale oil refers to the petroleum resources contained in shale-based shale formations. It is a kind of unconventional petroleum, including oil in pores and fractures of mud shale, and tight carbonatite or rock in mud shale formations. Petroleum resources in clastic formations and interlayers. Among them, fracture type and pore type are the important targets of shale oil exploration and development. Shale oil extraction methods include o...

Claims

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Application Information

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IPC IPC(8): E21B7/04E21B4/02E21B4/00C08L25/04C08L27/18C08L77/10C08L33/12C08K7/10C08K3/30C08K5/11
CPCE21B7/046E21B4/02E21B4/006C08L25/04C08L2207/04C08K2003/3009C08L27/18C08L77/10C08L33/12C08K7/10C08K3/30C08K5/11
Inventor 王波陈宇轩李健吕志鹏华剑陈业宏
Owner YANCHENG HUAYA GASOLINEEUM MACHINERY MFG
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