Inflated type permanent packer are mainly used in the complex oil and gas well cementing engineering to realize packer and bridging in the different downhole . They also can be used for permanent packer in the downhole without cementing.

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Description

Oil well Packer

The downhole tool, refers to the connection on the downhole string, used for packer tubing with oil and gas well casing or open hole wall annular space of downhole tools.

Products name: packer

when need packer tubing with oil and gas well casing or open hole wall annular space, connect the packer on the downhole string, down to the design depth, through the hydraulic drive and make the packer occurred on the packer expansion packer oil casing annulus. Different types of packers have different starting and unsealing methods. After the hydraulic expansion packer is lowered to the design depth, the high-pressure liquid is pressurized from the tubing, and the high-pressure liquid acts on the inner cavity of the rubber barrel through the pressure transfer pore inside the packer. Under the action of the throttle pressure difference, the rubber barrel becomes an inflatable oil jacket annulus. When the oil pressure is released and the oil jacket pressure is balanced, the rubber cylinder shrinks back to the original state by its own resilience to achieve unsealing. After the compression packer is lowered to the design depth, the high-pressure liquid is pressurized from the tubing, and the high-pressure liquid acts on the piston mechanism through the pressure transfer pore inside the packer. Under the action of the throttle pressure difference, the expansion oil jacket annulus occurs in the compressed rubber cylinder. When the oil pressure is released and the oil jacket pressure is balanced, the rubber cylinder recovers to the original state by its own resilience to achieve unsealing.

Use process

1, must be conducted before that the packer in the well and wash well homework;

2, setting operation: low for homework finished, according to the design method of set packer;

3, unlock operation: hydraulic expansion and compression type packer after oil set of pressure balance, can automatically unlock. Other packers are designed to release in different ways.