Flow line filter apparatus

Patent · Tue Jul 08 04:00:00 EDT 1986

OSTI ID:5433873

Gardes, R A

An apparatus is described for filtering drilling mud that is recirculated out of a well casing. The apparatus includes: a. a flow conveying tubular section, sealably attachable at its first lower end to the well casing for allowing fluid flow therethrough and open-ended at its top portion; b. an outer tank portion being at least twice the diameter of the flow conveying tubular section, encapsulating substantially the upper half portion of the tubular section, the tank portion being substantially open-ended at its top portion and attached at its bottom portion to the outer surface of the flow conveying tubular section and defining a container for receiving the filtered flow from the tubular section; c. primary filter means comprising a plurality of vertical slotted vents equally and circumferentially spaced around the wall of that portion of the tubular section within the tank portion and in fluid communication therewith for conveying fluid out of the tubular section and into the tank portion as the fluid containing solids travels up the tubular section.

• Assignee: NOV; EDB-86-156218; NOV-85-017633
• Patent Number(s): US 4599172
• OSTI ID: 5433873
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CONTAINERS
CONTROL EQUIPMENT
DRILLING FLUIDS
EQUIPMENT
FILTERS
FILTRATION
FLOW BLOCKAGE
FLOW REGULATORS
FLUID FLOW
FLUIDS
LIQUID FLOW
MOTION
NATURAL GAS WELLS
OIL WELLS
ROTATION
SEALS
SEPARATION PROCESSES
SOLIDS FLOW
SPACE DEPENDENCE
VENTS
WELL CASINGS
WELLS