Sleeve guiding shoe system driven by large-drift-diameter all-metal hollow screw drill
A casing guide shoe and hollow screw technology, which is applied to the driving device, drilling tool, drill pipe and other directions in the wellbore, can solve the problems of mismatching actual needs, small torque, complex structure, etc., to improve efficiency and adapt Sexuality, time-saving and cost-saving effects
Pending Publication Date: 2022-04-29
北京佰文恒新能源服务有限公司
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Problems solved by technology
Turbine structure, the torque generated by a single turbine section is very small, requiring a large number of turbine sections, the structure is complex, the length is generally much longer than other tools, and the length that is too long often does not match the actual needs; the speed of the turbodrill is often 1000 per minute It is very unfavorable to the performance of the downhole tool, the life of the bearing system and the guide shoe; for the screw structure, the stator with internal rubber injection is generally used, and it is basically impossible to achieve a sufficient large diameter due to the space occupied by the rubber; while other structures Hydraulic drive motors are rarely used, and the torque generated is often relatively small, which often cannot meet the needs of practical applications
Method used
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[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it with reference to the description.
[0030] It should be understood that terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.
[0031] Such as Figure 1-Figure 4As shown, the present invention provides a casing guide shoe system driven by a large-diameter all-metal hollow screw drilling tool, including: a system body, which includes a screw power part, a flexible connection part, a bearing part and a casing guide shoe , the flexible connection part is arranged in the screw power part, the bearing part is arranged in the screw power part and is located at the front part of the screw power part, and the casing shoe is arranged in the screw power part front end.
[0032] The working principle...
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The invention discloses a casing guide shoe system driven by a large-drift-diameter all-metal hollow screw drill, the casing guide shoe system comprises a system body, the system body comprises a screw power part, a flexible connecting part, a bearing part and a casing guide shoe, when high-pressure drilling fluid enters the screw power part, the screw power part drives the flexible connecting part to rotate, and the flexible connecting part drives the bearing part to rotate; and the flexible connecting part drives the casing guide shoe to rotate through the bearing part. And the screw power part provides the same torque and power under the condition that the length of the screw power part is shorter than that of the turbine structure, so that the screw power part is suitable for various application occasions needing high and low torques during casing running operation. The casing guide shoe system driven by the large-drift-diameter all-metal hollow screw drill can also be used for casing drilling operation, hydraulic drive is adopted for casing drilling operation without rotating the whole pipe column, and the efficiency and adaptability of casing drilling operation are improved. And meanwhile, the time for drilling internal parts is saved, and the casing running or casing drilling operation cost is greatly saved.
Description
technical field [0001] The present invention relates to the technical field of petroleum and natural gas. The present invention is a casing guide shoe or drill shoe used for driving casing guide shoes or drilling shoes in the process of oil or natural gas completion downhole casing or tailpipe, to carry out casing drilling or to help or promote casing A tool for smoothly running into a predetermined position. More specifically, the invention relates to a casing guide shoe system driven by a large-diameter all-metal hollow screw drilling tool. Background technique [0002] In the process of casing running in oil or natural well drilling, it is very important to successfully run the casing to the predetermined depth at one time to complete the predetermined goal. During the casing running process, due to various reasons such as formation stability and wellbore trajectory, there will be many factors that are not conducive to the casing running in place, such as wellbore shrinka...
Claims
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IPC IPC(8): E21B17/14E21B4/02E21B12/00
CPCE21B17/14E21B4/02E21B12/00
Inventor 魏萍曾凡黔徐希良郭萌萌
Owner 北京佰文恒新能源服务有限公司