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Controllable hydraulic setting crossing packer

A hydraulic setting and packer technology, applied in the directions of sealing/packing, wellbore/well components, earth-moving drilling, etc. Effect

Pending Publication Date: 2019-07-12
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the packer set through the hydraulic control pipeline is applied to a deep formation, during the running process of the packer, due to the static pressure in the hydraulic control pipeline, the packer often stops before the packer reaches the specified depth. Setting will occur, unable to function as a packer

Method used

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  • Controllable hydraulic setting crossing packer
  • Controllable hydraulic setting crossing packer
  • Controllable hydraulic setting crossing packer

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0023] figure 1 It is a schematic diagram of the controllable hydraulic setting traversing packer of the present invention as a whole, figure 2 and image 3 yes figure 1 The enlarged view of the part framed by the middle dotted line, the controllable hydraulic setting penetration packer of the present invention includes a packer body, the packer body includes a center pipe 4 and a hydraulic assembly sleeved outside the center pipe 4, and the hydraulic assembly is covered with glue cylinder 6, the hydraulic assembly includes 7 cylinders 7, piston 8, vertebral body 9, two-way slips 10, limit piston 11, outer tube 16 and other components, such as Figure 4 shown. The outer tube 17 in the hydraulic assembly is connected to the piston 8 through a lower lock block (not shown in the figure), specifica...

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Abstract

The invention discloses a controllable hydraulic setting crossing packer. The controllable hydraulic setting crossing packer comprises a packer body. The packer body comprises a central pipe and a hydraulic assembly which sleeves the central pipe. At least one hydraulic control pipeline is arranged between the central pipe and the hydraulic assembly. Rupture disks are arranged at the liquid inletends of the hydraulic control pipelines, and rupture disk bursting discs are arranged on the rupture disks and are used for bearing static pressure above the hydraulic control pipelines. When the hydraulic pressure in the hydraulic control pipelines rises, the rupture disk bursting discs rupture, and the hydraulic pressure is transmitted to the hydraulic assembly through a pressure transmission hole, so that setting is achieved. The controllable hydraulic setting crossing packer has two alternative setting systems, the controllable hydraulic setting crossing packer can be set either by the central pipe or by hydraulic pipelines. According to the controllable hydraulic setting crossing packer, the setting mode can be independently selected, the downhole setting position is accurately controlled, and the using performance of the packer is optimized.

Description

technical field [0001] The invention relates to a controllable hydraulic setting traversing packer, which belongs to the field of downhole operation pipe string packers for oil exploitation. Background technique [0002] Packer is a downhole tool widely used in drilling and completion and various downhole oil operations. It is used to seal off the annular space between pipe strings of various sizes, wellbore and pipe strings, and to isolate production layers. To control the layered injection and output of fluid. Commonly used packers use central pipe setting or hydraulic pipeline setting. When the packer set through the hydraulic control pipeline is applied to a deep formation, during the running process of the packer, due to the static pressure in the hydraulic control pipeline, the packer often stops before the packer reaches the specified depth. Setting will occur and the function of the packer cannot be performed. In addition, due to the complex working conditions in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/128E21B33/1295
CPCE21B33/1285E21B33/1295
Inventor 许亮斌罗建伟盛磊祥张亮李瑞丰谢选举刘景超郝希宁王宇
Owner CHINA NAT OFFSHORE OIL CORP
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