A Coiled Tubing Drilling Torque Booster

A technology of increasing torque and pressure-on-bit, applied in drilling equipment, earthwork drilling, rotary drilling rigs, etc., can solve problems such as low operating torque on bit, poor adaptability to well diameter changes, discontinuous work of crawlers, etc., to achieve continuous work , Adaptable effect

Inactive Publication Date: 2017-12-15
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Purpose of the present invention: In order to overcome the shortcomings of existing crawlers such as discontinuous work and poor adaptability to well diameter ch...

Method used

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  • A Coiled Tubing Drilling Torque Booster
  • A Coiled Tubing Drilling Torque Booster
  • A Coiled Tubing Drilling Torque Booster

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Embodiment Construction

[0021] The present invention is not limited by the following implementation examples, and specific implementation manners can be determined according to the technical solutions of the present invention and actual conditions. Combine below figure 1 , figure 2 , image 3 , Figure 4 The present invention is described below. The positional relationship of up, down, left, right, etc. is based on the attached figure 1 determined by the layout direction.

[0022] Coiled tubing joints or upper tools are installed on the upper end of the center barrel 1, and a transfer case is installed on the lower end of the center barrel 1 and connected with taper buckles.

[0023] A throttling cylinder 6 is set inside the central cylinder 1, and a sliding sleeve 3 is placed on the outer surface of the central cylinder 1. The central cylinder 1 is provided with an axial chute, and the screw 4 is arranged in the chute, and the throttling cylinder 6 and the sliding sleeve 3 are connected by the...

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Abstract

The invention relates to a drilling pressure and torque amplifier for a coiled tubing. By the adoption of the drilling pressure and torque amplifier for the coiled tubing, the torque of a turbine drill can be converted into the drilling pressure and torque of a front-end tool. According to the technical scheme of the drilling pressure and torque amplifier for the coiled tubing, a throttling cylinder is arranged in a central cylinder, the throttling pressure difference skews in the radial direction and deflects in the circumferential direction through sliding sleeve driving wheel shafts, the rotation and torque of the turbine tool are transmitted to rolling wheels by means of a transfer case through a big gear and a small gear, and a flow hole is formed in the transfer case. According to the drilling pressure and torque amplifier for the coiled tubing, the stretching angles of the wheel shafts can be adjusted automatically and steplessly, the adaptability to borehole diameter changes is high, and the torque of the turbine drill can be amplified through the transfer case, so that better conditions are provided for the front-end tool; and meanwhile, greater pulling force can be provided for the coiled tubing.

Description

technical field [0001] The invention relates to a drill pressure torque booster for coiled tubing, which is specifically applied to coiled tubing operations in oil and gas wells, especially coiled tubing drilling, well logging, grinding, well washing and other operations. Background technique [0002] Coiled tubing is a complete slender pipe with a length of thousands of meters. It is coiled on the reel on land, and the whole string can be sent downhole; it is widely used in workover, drilling bridge plugs after fracturing, and falling Fish salvage, well logging, drilling and other operations. Because of its continuous structure, coiled tubing has short tripping time, and its work efficiency is 3 to 5 times that of ordinary drill pipe, tubing and casing. [0003] Coiled tubing has too much deflection, can only bear axial tension, and can hardly bear torque and axial pressure. Therefore, the operation of coiled tubing in inclined wells and horizontal wells needs to add a fe...

Claims

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Application Information

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IPC IPC(8): E21B19/08E21B23/08E21B4/02
CPCE21B4/006E21B4/02E21B19/08E21B23/001E21B23/08
Inventor 张梁邓严刘稳邓兰孙切何虹钢
Owner SOUTHWEST PETROLEUM UNIV
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