Schlumberger Technology Corporation

Susan Wu

Farhan Ahmed Omer

Weiming Lan

Nitin Verroju

Thomas Eric Dudley

Yiming Fan

Michael Underbrink

A technique facilitates actuation of a packer to a sealing and gripping position along a borehole. The packer includes a packer element structure mounted about a center structure. The packer element structure includes a sealing element mounted along an expandable base such that the sealing element may be radially expanded. Additionally, the packer includes an actuator member connected to a portion of the packer element structure via a release mechanism, e.g. a shear member. A plurality of slips may be located on the actuator member such that linear movement of the actuator member causes successive movement of the packer sealing element and then the slips in the radially outward direction. The packer may be constructed such that this sequential setting motion creates a jarring effect to ensure the slips securely bite into the surrounding wellbore surface, e.g. casing surface.

Combined actuation of slips and packer sealing element

A technique facilitates use of a liner hanger in a borehole. A port free hydraulic unibody system including an outer structure having a tubing hanger portion and a packer portion mounted about a mandrel may be constructed so as to avoid the creation of leak paths. A seal system may be employed between the mandrel and the surrounding outer structure to ensure sealing engagement therebetween. The mandrel has a port free section on the downhole side of the seal system, and this port free section is maintained during, for example, actuation of the tubing hanger portion so as to prevent formation of leak paths. An actuator may be located along the mandrel and may be configured to initiate actuation of hanger slips mounted along the tubing hanger portion. An anti-preset mechanism positioned along the mandrel works in cooperation with the actuator to prevent premature actuation of the hanger slips.

Port free hydraulic unibody system and methodology for use in a well

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Rosharon, TX, United States of America

Susan Wu