Abstract: A downhole packer includes a first locking member positioned at least partially around an outer surface of an oilfield tubular. The first locking member includes an inner surface that engages the outer surface of the oilfield tubular, and a tapered outer surface. A drive ring is positioned at least partially around the first locking member. The drive ring includes a reverse-tapered inner surface that engages the tapered outer surface of the first locking member. A first cap is movably coupled with the drive ring, disposed at least partially around the first locking member, and axially engaging the first locking member. Moving at least one of the first cap and the drive ring toward the other causes the drive ring to apply a radially-inward force on the first locking member, causing the first locking member to be secured to the tubular.

Abstract: A downhole packer includes a first locking member positioned at least partially around an outer surface of an oilfield tubular. The first locking member includes an inner surface that engages the outer surface of the oilfield tubular, and a tapered outer surface. A drive ring is positioned at least partially around the first locking member. The drive ring includes a reverse-tapered inner surface that engages the tapered outer surface of the first locking member. A first cap is movably coupled with the drive ring, disposed at least partially around the first locking member, and axially engaging the first locking member. Moving at least one of the first cap and the drive ring toward the other causes the drive ring to apply a radially-inward force on the first locking member, causing the first locking member to be secured to the tubular.

Abstract: A running tool for a liner hanger has a mandrel supported by latch segments housed in a latch cage, the latch segments being engaged in the tubular portion of the hanger. In one mode, the latch cage is supported on latch shoulders temporarily restrained to the mandrel by a locking cylinder. Support of the latch cage ensures the latch segments remain engaged. Hydraulic actuation of the locking cylinder releases the latch shoulders, releasing the latch cage to move axially and disengage the latch segments. The mandrel is also supported using a drive housing axially engaging the liner hanger. If the hydraulic actuation fails, an indexed and relative reverse rotation of the mandrel releases the mandrel to lower through the drive housing and through the latch cage housing to the disengaged position. A barrel ratchet enables transmission of driving torque in one direction and ratcheting in a reverse direction.

Abstract: In method for manufacturing an integrated circuit improves the reliability of thermosonic bonds formed to attach a gold bond wire to an aluminum interconnect pad, where a pad opening in the integrated circuit is on the order of 60 microns. In the method, a reactive ion etch (RIE) passivation etch is used which does not include a, more corrosive sulfur hexa-fluoride to remove the SiO2 passivation layer above the pad. Instead, the RIE uses argon as the carrier gas, carbon tetrafluoride (CF4) and trifluoromethane (CHF3) as active etchants, and oxygen (O2) to reduce the residual halide contaminant in the aluminum pad. Further, a thin titanium layer is deposited beneath the aluminum pad layer to improve adhesion of the aluminum pad to underlying layers of the semiconductor integrated circuit. The aluminum pad layer is made very thin, or less than approximately 8000 Å, to limit Kirkendall voiding.

Abstract: An apparatus for detecting cracks in a flip-chip die which comprises an emitter (2) coupled to the die (1) for emitting energy along an axis, a probe (3) located on the die for receiving the energy, and a device (19) coupled to the probe for detecting the energy along the axis.