Constantly energized no-load tension packer

Patent · Tue Dec 29 00:00:00 EST 1981

OSTI ID:5708051

Preston, D C; Reiter, K C

A retrievable, constantly energized, no-load packer is securable within a well and removable by application of tension. Upper and lower slip means are expandable into gripping engagement with the casing. A control body extends to the upper and lower slips and is encircled by packing means. A release housing extends from the lower expansion means with latch means being provided for securing the control body with the release housing, the latch means being shiftable to disengage the control body from the release housing for retrieval of the apparatus. Lock sleeve means are connected to the release housing for securing the latch means and one of the control body and release housing and are shearably releasable therefrom for disengagement of the control body and the release housing, the application of tension through the control string being carried by the control body without being transmitted through the lock sleeve means to set the apparatus. A tubular member securable to the running string is telescopically manipulatable within the body of the apparatus to provide a conventional slick joint upon selective release from the body of the apparatus. Effective pressure area means are provided for transmitting to the packer means a compressive force resulting from a differential pressure from above or below across the packing means when the slip means are in expanded position and the packing means are sealed relative to the casing whereby the packing means are constantly energized and maintained in sealed relation with the casing.

• Assignee: Baker International Corp
• Patent Number(s): US 4307781
• OSTI ID: 5708051
• Resource Relation: Patent File Date: Filed date 4 Jan 1980; Other Information: PAT-APPL-109698
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
42 ENGINEERING
NATURAL GAS WELLS
PACKINGS
OIL WELLS
BOREHOLES
REMOVAL
TENSILE PROPERTIES
WELL CASINGS
CAVITIES
MECHANICAL PROPERTIES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing
420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)