Abb Vetco Gray Incorporated

General Electric Company

George Gibson Chalmers

Norman Brammer

Clifford Bueno

Donald Seton Farquhar

Stanley Hosie

Thomas F Sweeney

Robert Buchan

Tamas Gschwendtner

Antonio Luigi Ibba

A radiography imaging system for generating images of a pipe assembly includes a radiation source for emitting rays. The pipe assembly includes at least one of a pipe, tubing, and a weld. The radiation source includes a radioactive isotope having an activity level within a range between about 1 Curie and about 40 Curies. The radiation source is positioned adjacent a portion of the pipe assembly. A detector is positioned opposite the radiation source. The portion of the pipe assembly is positioned between the radiation source and the detector such that the rays interact with the portion of the pipe assembly and strike the detector. The detector includes an imaging plate that is activated by illumination with the rays with an exposure within a range between about 0.5 Curie-minute and about 5 Curie-minutes of radiation. The imaging plate has a thickness within a range between about 5 mm and about 15 mm. The detector further includes an imaging unit for generating images based on information from the imaging plate. The imaging unit has a pixel pitch that is within a range between about 25 microns and about 100 microns.

System for radiography imaging and method of operating such system

A metal seal for a wellhead assembly has upper and lower legs extending in opposite directions from each other and a rib extending radially outward from a junction of the legs. A first conical band on the upper leg extends uninterrupted from the rib a selected distance toward a tip of the upper leg. A second conical band on the upper leg extends uninterrupted from the tip of the upper leg toward the first conical band. An annular recess is located between the first and second conical bands. The lower leg also has two conical seal bands separated by a recess.

Gasket with multiple sealing surfaces

A device automatically makes up a riser string from riser spools, each having an ancillary line and dog-type connectors. A support member supports a second riser spool for connection. A torque arm above the support member hinges open to accept a first riser spool and hinges close to engage the first spool and rotate the first spool to align its ancillary line with the ancillary line of the second spool. A guide arm above the support member hinges open to accept the first spool and hinges closed to engage and radially position the first spool while allowing vertical movement of the first spool. Connector actuators are positioned around the support member to actuate the connectors when the first spool is lowered onto the second spool.

Automated dog-type riser make-up device and method of use

Growing community of inventors

Peterhead, United Kingdom

George Gibson Chalmers