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Downhole electric control compression type packer

A compression packer and electronic control technology, which is applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc., can solve the problem of inability to accurately control multiple packers separately, and achieve simple structure, The effect of simple ground equipment and high degree of intelligence

Active Publication Date: 2015-05-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention should be able to solve the problem that the prior art cannot accurately control multiple packers respectively

Method used

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  • Downhole electric control compression type packer
  • Downhole electric control compression type packer
  • Downhole electric control compression type packer

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Embodiment Construction

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0031] Such as figure 1 As shown, the present invention provides a downhole electronically controlled compression packer, which includes: a base pipe, a motor sleeved on the base pipe, a speed reduction device, a transmission device and a packing spacer.

[0032] The motor includes: an annular motor output shaft, that is, a hollow shaft (not shown in the figure), and the annular motor output shaft is rotatably sleeved on the base pipe. The motor is, for example, a ring motor or a ring permanent magnet synchronous motor.

[0033] The reduction device includes: an annular NN type planetary gear reducer 5 with small tooth difference, and the NN type planetary gear reducer 5 with small tooth difference includes: an annular input sh...

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Abstract

The invention provides a downhole electric control compression type packer, which comprises a base pipe, a motor, a speed reduction device, a transmission device and a packing device, wherein the motor, the speed reduction device, the transmission device and the packing device are sheathed on the base pipe, the motor comprises a circular motor output shaft, the circular motor output shaft is rotatably sheathed on the base pipe, the speed reduction device comprises a circular NN-shaped planetary gear speed reducer with small teeth difference (5), the circular NN-shaped planetary gear speed reducer with small teeth difference (5) comprises a circular input shaft and a circular output shaft, the input shaft of the circular NN-shaped planetary gear speed reducer with small teeth difference (5) is connected with the circular motor output shaft, and the transmission device comprises a thread pipe (6), a transmission nut sleeve (9) and a lower sleeve (10).

Description

technical field [0001] The invention relates to the field of oil production machinery, in particular to an electronically controlled compression type downhole packer, the main function of which is to realize the sealing and unsealing of the wellbore through remote control. Background technique [0002] With the continuous emergence of problems such as reservoir pressure drop and water cut rise, the demand for technologies such as layered production, layered fine water injection, and horizontal well water control and water shutoff is becoming more and more urgent. In addition, in the development of unconventional and low-permeability oilfields, layered multi-stage fracturing has gradually replaced general fracturing and has become one of the main methods for oilfield stimulation. In these layered operation techniques, packers must be used to divide different intervals to finely control operating parameters and improve operational effectiveness. The existing packers can be di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/129E21B33/127
Inventor 黄鹏沈泽俊王新忠张国文薛建军李明
Owner PETROCHINA CO LTD
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