US 11,946,374 B2
Omni-directional horizontally orientaed deflecting tool for coiled tubing
Yang Tang, Chengdu (CN); Miantao Guan, Chengdu (CN); Yulin Zhang, Chengdu (CN); Peng Zhao, Deyang (CN); Guorong Wang, Chengdu (CN); Jinhai Zhao, Beijing (CN); Qingyou Liu, Chengdu (CN); Jinzhong Wang, Chengdu (CN); Xiang Gao, Chengdu (CN); Yufa He, Beijing (CN); Hu Deng, Beijing (CN); Liming Fan, Deyang (CN); and Rutao Ma, Beijing (CN)
Assigned to Southwest Petroleum University, Chengdu (CN)
Filed by Southwest Petroleum University, Chengdu (CN)
Filed on Jul. 5, 2023, as Appl. No. 18/347,179.
Claims priority of application No. 202210946195.3 (CN), filed on Aug. 8, 2022.
Prior Publication US 2024/0044211 A1, Feb. 8, 2024
Int. Cl. E21B 7/06 (2006.01); E21B 23/00 (2006.01); E21B 23/04 (2006.01)
CPC E21B 7/061 (2013.01) [E21B 23/006 (2013.01); E21B 23/0411 (2020.05)] 7 Claims
OG exemplary drawing
 
1. An omni-directional horizontally oriented deflecting tool for a coiled tubing, comprising an inner central pipe, an outer central pipe, a cone outer cylinder connected with the outer central pipe through a shear pin I, a piston outer cylinder connected with the outer central pipe through a shear pin II, an anchoring mechanism, a sealing mechanism, a transposition mechanism and a steering mechanism,
wherein an upper part and a lower part of the outer central pipe are provided with two threaded holes, the upper part and the lower part of the outer central pipe are provided with circumferential circular through holes, and outer walls of the upper part and the lower part of the outer central pipe are provided with circumferential rectangular grooves, an inner side of a lower part of each rectangular groove is provided with a circular hole, and a segment of rectangular groove is provided in both sides of a lower part of the outer central pipe,
the anchoring mechanism comprises a cone, an O-shaped seal ring I, a cone spring, a slip, a slip spring, a slip seat, a claw I and a pin shaft I, wherein an upper part of the cone is provided with a step and a lower part of the cone is provided with a conical surface and is circumferentially provided with three rectangular through grooves uniformly, the cone is installed between the outer central pipe and the cone outer cylinder, an outer side of an upper part of the slip seat is provided with external thread I, and an inner side of the upper part of the slip seat is provided with two annular grooves, and the slip seat is circumferentially provided with three groups of rectangular through grooves and an inner side of the slip seat is provided with three circular grooves, the slip seat is connected to the cone outer cylinder through thread, the O-shaped seal ring I is arranged between the slip seat and the cone and the O-shaped seal ring I is installed in the annular groove at the inner side of the upper part of the slip seat, the cone spring is arranged between the rectangular through groove of the lower part of the cone and the slip seat, the slip is installed in the rectangular through groove of the slip seat, and the upper part of the slip is in contact with the conical surface of the lower part of the cone, the slip spring is arranged between the slip and the circular groove at the inner side of the slip seat, and the claw I is installed in the rectangular groove of the upper part of the outer wall of the outer central pipe through the pin shaft U;
the sealing mechanism comprises a piston, an O-shaped sealing ring II, a claw II, a pin shaft II, an upper rubber cylinder seat, a rubber cylinder, a connecting cylinder, a lower rubber cylinder seat and a gasket, wherein an upper end of the piston is an annular frustum, a lower part of the annular frustum is provided with four annular bosses with a certain radian, the piston is arranged between the outer central pipe and the piston outer cylinder, the O-shaped sealing ring II is arranged between the annular frustum at the upper end of the piston and the piston outer cylinder, and the claw II is installed in the rectangular groove of the lower part of the outer wall of the outer central pipe through the pin shaft II, an inner side of an upper part of the upper rubber cylinder seat is provided with thread II, and an inner side of the upper rubber cylinder seat is provided with thread III, the upper rubber cylinder seat is provided with four annular through grooves with a certain radian, the upper rubber cylinder seat is connected to the piston outer cylinder through thread, the annular boss of the piston is installed in cooperation with the annular through groove of the upper rubber cylinder seat, the connecting cylinder is arranged outside the outer central pipe and connected to the upper rubber cylinder seat through thread, the gasket is arranged outside the connecting cylinder and is in contact with the upper rubber cylinder seat, the rubber cylinder is sleeved arranged outside the connecting cylinder and is in contact with the gasket, and the lower rubber cylinder seat is connected to the connecting cylinder through thread;
the transposition mechanism comprises a lower outer cylinder, a transposition spring, a thrust bearing and a transposer, wherein the lower outer cylinder is connected to the lower rubber cylinder seat through threads, the transposition spring is arranged between the outer central pipe and the lower outer cylinder, an upper end of the transposition spring is in contact with the lower rubber cylinder seat and the lower end of the transposition spring is in contact with the thrust bearing, the thrust bearing is arranged between the outer central pipe and the lower outer cylinder, an inner side of a middle of the transposer is provided with six groups of transposition tracks, and each of the six groups of transposition tracks comprises a track I, a track II, a track III and a track IV, the transposer is installed in the lower outer cylinder, and an upper end face of the transposer is in contact with a lower end face of the thrust bearing; and
the steering mechanism comprises a steering cylinder frame, a steering cylinder and a pin shaft III, wherein the steering cylinder frame is connected to a lower end of the transposer through threads, and the steering cylinder is installed between the steering cylinder frames through a pin shaft, an upper part and a middle part of the inner central pipe are provided with circumferential circular through holes, the middle part and a lower part of the inner central pipe are provided with circumferential pin holes, the pins are installed in the pin holes, the pin of the middle part of the inner central pipe are matched with the rectangular groove of the lower part of the outer central pipe, the pin of the middle part of the inner central pipe move axially along the rectangular groove of the lower part of the outer central pipe, the pin of the inner central pipe is installed in cooperation with the transposition track, the pin of the middle part of the inner central pipe slides in the transposition track, and the through hole of the inner central pipe are aligned with the through hole of the outer central pipe.