Method and apparatus for dispensing oil well proppant additive

Patent · Tue Jul 21 04:00:00 EDT 1987

OSTI ID:6218977

Harvey, R D

Sealed apparatus is described for accurately dispensing an additive into a pressurized stream of well proppant, the apparatus comprising: a sealed housing connected to the stream, and including a chamber for containing the additive in a position between the chamber and the pressurized stream; a stationary auger ring sealed to the interior of the chamber; movable additive dispensing means disposed internal to the apparatus between the chamber and the pressurized stream, and movable within the auger ring from a first position in which the flow of additive is shut off and the chamber is sealed from the pressurized stream, to a second position in which the chamber is in communication with the pressurized stream. The additive in the chamber can be dispensed into the stream, the dispensing means forming the bottom of the container upon which the additive rests; drive means for moving the dispensing means; a pressure equalizing conduit disposed within the sealed housing extending from the additive chamber through the auger ring and in communication with the stream of well proppant. The pressure equalizes the fluid pressure existing in the pressurized stream with the fluid pressure existing in the chamber.

• Assignee: NOV; EDB-87-146481; NOV-87-073308
• Patent Number(s): US 4681245
• OSTI ID: 6218977
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
CONTAINERS
CONTROL
FLUID FLOW
LIQUID FLOW
OIL WELLS
PRESSURE CONTROL
PRESSURIZING
PROPPING AGENTS
SEALS
WELL COMPLETION
WELLS