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A coiled tubing roller type pushing device

A push device and roller-type technology, which is applied in the direction of drill pipe, casing, drilling equipment, etc., can solve the problems of discontinuous crawler work, low pressure-on-bit (WOP) in coiled tubing drilling and grinding operations, and poor adaptability to well diameter changes. Achieve the effects of increased torque, strong adaptability, and favorable type selection

Inactive Publication Date: 2017-09-29
SOUTHWEST PETROLEUM UNIV
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  • Abstract
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Problems solved by technology

[0007] Purpose of the present invention: In order to overcome the disadvantages of discontinuous work of existing crawlers and poor adaptability to well diameter changes, and at the same time solve the problem of low pressure-on-bit in coiled tubing drilling and grinding operations, a coiled tubing roller push device is specially provided

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  • A coiled tubing roller type pushing device
  • A coiled tubing roller type pushing device
  • A coiled tubing roller type pushing device

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Embodiment Construction

[0023] 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 , Figure 5 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.

[0024] The upper end of the central cylinder 14 is installed with a limit short-circuit 4 and connected with a cone buckle, the upper end of the limit short-connection 4 is installed with a swivel joint 29 and connected with a cone buckle, the lower end of the center cylinder 14 is installed with a transfer case 28 and connected with a cone buckle, and the lower end of the transfer case 28 is connected with a cone buckle. Fasten the turbodrill housing 27.

[0025] The rotary joint 29 includes a gland 1, a fixed...

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Abstract

The invention relates to a wheel type coiled tubing pushing device which can convert the torque of a turbine drill into the drilling pressure and torque of a front end tool. According to the technical scheme, a throttling cylinder is arranged in a central cylinder, throttling pressure difference drives wheel axles to spirally stretch out through a rotating cylinder and a sleeve, a transfer case transmits the rotation and the torque of the turbine drill to wheels through a big gear and a small gear, and an overflow hole is formed in the transfer case. The wheel type coiled tubing pushing device continuously works, can automatically adjust the stretch-out angles of the wheel axles in a stepless mode, and is high in adaptability to well diameter change.

Description

technical field [0001] The invention relates to a coiled tubing roller type pushing device, which is specifically applied to coiled tubing operations in oil and gas wells, especially operations such as drilling, grinding, and well washing of coiled tubing. 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 feeding device tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/22
CPCE21B19/22
Inventor 张梁邓严刘稳邓兰宁点何虹钢
Owner SOUTHWEST PETROLEUM UNIV
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