Duncan James
Duncan James Hunter, Medford, OR US
Patent application number | Description | Published |
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20140246552 | Support Arm - A support arm includes a generally elongated support arm housing having first and second ends; an arm mounting member pivotally carried by the first end of the support arm housing, the arm mounting member pivotal throughout a first range of rotation; a device mounting member pivotally carried by the second end of the support arm housing, the device mounting member pivotal throughout a second range of rotation; a position equalizing assembly engaging the arm mounting member and the device mounting member, the position equalizing assembly pivoting the arm mounting member and the device mounting member in opposite directions throughout the first range of rotation and the second range of rotation; anda counterbalance adjusting assembly carried by the arm mounting member and engaging the device mounting member, the counterbalance adjusting assembly applying counterbalance force to the device mounting member. | 09-04-2014 |
Duncan James Trinder, Inverurie GB
Patent application number | Description | Published |
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20120125619 | ACTIVE EXTERNAL CASING PACKER (ECP) FOR FRAC OPERATIONS IN OIL AND GAS WELLS - A zonal isolation device ( | 05-24-2012 |
Duncan James Trinder, Aberdeenshire GB
Patent application number | Description | Published |
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20130284443 | Sampling Assembly for a Well - A sampling assembly for taking single or multiphase production fluid samples from a subsea well. The sampling assembly includes a receiving structure that houses a saver sub and a retrievable skid. The sampling assembly allows for repeated retrieval of collected samples and replenishment of empty sample chambers using the retrievable skid. A releasable connection interface between the retrievable skid and the saver sub allows an ROV to connect the retrievable skid to the saver sub and provide electrical and hydraulic power to the sampling assembly for taking samples. | 10-31-2013 |