Boring or penetrating the earth – Processes – Boring with specific fluid
Patent
1996-10-15
1998-12-01
Tsay, Frank
Boring or penetrating the earth
Processes
Boring with specific fluid
175206, 175207, E21B 2106, B09B 500
Patent
active
058425292
ABSTRACT:
A method of removing drill cuttings from an oil and gas well drilling platform includes the steps of separating the drill cuttings from the well drilling fluid on the drilling platform so that the drilling fluids can be recycled into the well bore during drilling operations. The cuttings are transmitted via gravity flow to a materials trough having an interior defined by sidewalls and a bottom portion. The drill cuttings are suctioned from the bottom portion of the trough interior with a first suction line having an intake portion that is positioned at the materials trough bottom. Drill cuttings are transmitted via the suction line at flow velocities in excess of 100 feet per second to a tank that has two collection chambers. A vacuum is formed in sequence within the interior of each chamber using a blower that is in fluid communication with the tank interior via a second vacuum line. In one embodiment a valve apparatus (preferably timer controlled) directs drill cuttings to one chamber until full and then to another chamber. As each chamber is filled, the cuttings are squeezed with a hydraulic ram to separate drilling fluid from the cuttings and then force the cuttings from the chamber via a lowermost check valve.
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