A kind of screw drilling tool used for oil field drilling operation
A screw drilling tool and oil field drilling technology, which is applied in drilling equipment, driving devices for drilling in wellbore, and earth-moving drilling, etc. The effect of prolonging the service life
Active Publication Date: 2021-10-01
东营市乾润石油工程技术服务有限责任公司
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Problems solved by technology
[0004] Aiming at the deficiencies of the prior art, the present invention provides a screw drilling tool for oil field drilling operations, which solves the problem of damaged service life of motors and drill bits
Method used
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Embodiment
[0025] Such as Figure 1-6 As shown, the embodiment of the present invention provides a screw drilling tool for oilfield drilling operations, including a bypass valve assembly 1, the right end of the bypass valve assembly 1 is fixedly connected to a motor housing 3 through a connecting piece 2, and the right end of the motor housing 3 The universal joint shaft assembly 4 is fixedly connected through the connecting piece 2, the right end of the universal joint shaft assembly 4 is fixedly connected with the transmission shaft assembly 5 through the connecting piece 2, and the right end of the transmission shaft assembly 5 is fixedly connected with the connecting shaft shell through the connecting piece 2 6. The right end of the connecting shaft shell 6 is provided with a drill bit assembly 7. In the above structure, the function of the bypass valve assembly 1 is to prevent the liquid from flowing back into the drill tool due to the high density of the liquid in the annular space ...
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The invention provides a screw drilling tool used for drilling operations in oil fields, and relates to the field of drilling tools. The screw drilling tool used for oil field drilling operations includes a bypass valve assembly, the right end of the bypass valve assembly is fixedly connected to the motor casing through the connecting piece, and the right end of the transmission shaft is fixedly connected to the connecting shaft casing through the connecting piece, The right end of the connecting shaft housing is provided with a drill bit assembly. The drill bit drives the drill bit connecting shaft to move upwards, and then the drill bit connecting shaft pushes the brake disc, and the brake disc rotates along the installation ring to tighten the bottom part of the brake disc inward until the drill bit connecting shaft is clamped, and the drill bit connecting shaft is clamped Finally, the drill bit starts to work, and the drill bit rotates to drive the slider to slide in the chute, which can make the drill bit have a buffer process when drilling and working, reduce the collision between the drill bit assembly and hard objects, prolong the service life of the drill bit, and pass The easy-to-replace rubber stator ensures the service life of the stud drilling tool, and it is worthy of vigorous promotion.
Description
technical field [0001] The invention relates to the technical field of drilling tools, in particular to a screw drilling tool used for oil field drilling operations. Background technique [0002] The screw drilling tool is a progressive cavity type volumetric hole bottom power machine, which uses mud and clear water as the power medium and transports it to the bottom of the hole through the center hole of the drill pipe. Energy conversion device, when drilling, the screw drill directly drives the core tube and the drill bit connected to the drive shaft at the bottom of the hole to rotate, and the entire drill string is only used as a channel for conveying high-pressure working medium and a rod for supporting the counter torque of the drill bit, without rotary motion Compared with conventional drilling, screw drill drilling has many advantages, such as greatly reduced drill pipe wear and high drilling speed. It is the main tool for directional holes and has played a role in t...
Claims
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IPC IPC(8): E21B4/02
CPCE21B4/02
Inventor 郭宝昌王文臣
Owner 东营市乾润石油工程技术服务有限责任公司