Trenchless Horizontal Directional Drilling Electric Drill Pipe
A technology of horizontal directional drilling and electric drill pipes, which is applied in the direction of drill pipes, circuits, drill pipes, etc., and can solve problems such as high failure rate, high price, and low transmission power
Active Publication Date: 2016-09-07
BC P INC CHINA NAT PETROLEUM CORP +1
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the oil drilling electric transmission drill pipe has a high failure rate, poor safety, low transmission power and high price. Problems such as insulation sealing and leakage
When transmitting high-power and high-voltage electric energy, the electrical joints and cables of the electric drill pipe are in the environment of wear, corrosion, vibration and drilling fluid for a long time, and they also have to withstand the vibration of the electric drill pipe repeatedly making up and breaking out, so the failure rate High, low transmission power, limited application
Method used
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Embodiment
[0017] refer to Figures 1 to 4 Embodiments of the present invention are further described:
[0018] The electric drill rod includes drill rod 1, pin sleeve 2, insulated cable 3 and socket sleeve 4:
[0019] Pin sleeve 2: The outer sleeve 9 with the end face ring platform is equipped with a long shaft sleeve 11, and the end face of the long shaft sleeve 11 is threaded to connect the lock nut 10 and the end cover 12 sequentially, and the end face of the end cover 12 is sequentially set on the The pressure sleeve 13, the sealing rubber sleeve 14, the tapered shielding sleeve 15 and the sleeve 21 on the long shaft sleeve 11; the bottom end of the inner sleeve 17 is inserted into the upper end hole of the outer sleeve 9, and the isolation sheath 16 is set on the inner sleeve 17 Between the sealing rubber sleeve 14 and the shielding sleeve 15, and screw the inner wall of the end cover 12; the ring platform of the outer wall of the inner sleeve 17 is bonded to the ring platform of ...
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The invention discloses a non-excavation horizontal directional drilling electric drill rod, which is designed for optimizing the function of the horizontal directional drilling electric drill rod. The shaft sleeves of the pin sleeve and slot sleeve of the electric drill rod are connected with lock nuts, end caps, pressure sleeves, sealing rubber sleeves, shielding sleeves and sleeves, and are provided with isolation sheaths and lock nuts; pin sleeves The inner wall shoulder of the drill pipe is connected, the slot sleeve is connected to the end face of the drill pipe, the two ends of the insulated cable are respectively inserted into the pin sleeve and the slot sleeve, and the pin assembly and the insulating slot are respectively connected. After the electric drill rod is installed, the cable is powered on to drive the reamer to ream the hole. The horizontal directional drilling rig provides counter torque and axial force for the electric drill pipe, realizes the torque transmission of electric reaming, conveys mud, and transmits power and signals, and completes the reaming operation using the electric drill pipe for horizontal directional drilling. The electric drill pipe has the advantages of simple structure, safe and reliable sealing and insulation, high transmission power, little influence of mud throttling, low failure rate, convenient installation and operation on site, and low modification cost.
Description
technical field [0001] The invention relates to a non-excavation horizontal directional drilling electric drill pipe, which belongs to the technical field of horizontal directional drilling crossing. Background technique [0002] Horizontal directional drilling crossing construction is driven by the drilling rig to rotate the drill pipe to provide tension and torque, the mud is injected from the drill pipe, the whole drill string rotates, and the front end of the reamer bears the tension and torque. The drill pipe towed by the reamer is long, flexible, low in efficiency, high in energy consumption and insufficient in rock breaking power. For the horizontal directional drilling construction of large-diameter, long-distance and complex formation pipelines, it is difficult to perform multi-stage reaming with ground drilling rigs and drill string-driven reamers. The reaming power is obviously insufficient, and the efficiency is low and the failure rate is high. . An effective ...
Claims
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IPC IPC(8): E21B17/00E21B17/02H01R24/00H01R13/502H01R13/52
Inventor 魏秦文焦如义李松李彦民吴江桥张宝强李贵华刘艳利袁欣然
Owner BC P INC CHINA NAT PETROLEUM CORP