Portable packer auxiliary unsealing device and method of use

A packer and portable technology, which is applied in the field of portable packer-assisted unpacking devices, can solve the problem that the packer cannot satisfy the fast unpacking of the packer and so on.

CN110887641BActive Publication Date: 2022-05-10CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-05-10

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Abstract

The invention discloses a portable packer auxiliary unsealing device and a use method thereof, wherein the device includes a center pipe and a thrust system, and the thrust system includes an inner cylinder, an outer cylinder, an inner force transmission sleeve, an upper joint, and a sealing joint , the piston, the inner cylinder is set on the outside of the central tube, the upper end of the outer cylinder is connected to the upper joint with a screw, the lower end is connected to the sealing joint with a screw, the lower end of the inner cylinder is connected to the sealing joint with a screw, the An annular piston cavity is formed between the inner cylinder and the outer cylinder, the piston is installed in the piston cavity, the sealing joint is provided with a radially penetrating pressure port, the upper end of the piston is connected to the inner force transmission sleeve, and the inner transmission The upper end of the force sleeve passes through the upper port of the upper joint and pushes against the locking part provided on the outer wall of the central tube. The invention solves the problem that the rapid unpacking of the packer cannot be satisfied after adopting the existing packer test equipment and the packer performance detection test.
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Description

technical field

[0001] The invention relates to a performance testing device for downhole tools in oil and gas wells, in particular to a portable packer-assisted unsealing device and a method for using the same. Background technique

[0002] In the process of oil and gas field development, for downhole operations such as fracturing, it is generally necessary to run a process pipe string and support various downhole tools. Downhole tools generally need to withstand harsh downhole environments such as high pressure and high temperature, and their pressure resistance performance is very important. Once a problem occurs, it will inevitably cause downhole accidents and cause huge economic losses. Packer is a kind of downhole tool widely used in downhole operations of oil and gas wells. It is used to seal the annulus of oil casing, to isolate the production layer, control the fluid, and protect the casing. The sealing performance of the packer directly affects the production and ...

Examples

Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] see Figure 1 to Figure 2 , the present invention provides a technical solution: a portable packer auxiliary unsealing device, including a central pipe 1-9, and a thrust system, the thrust system includes an inner cylinder 1-2, an outer cylinder 1-5, an inner cylinder The force transmission sleeve 1-3, the upper joint 1-4, the sealing joint 1-6, the piston 1-7, the inner cylinder 1-2 is sleeved outside the central pipe 1-9, th...