Apparatus for removal of wellbore particles

Patent · Tue Sep 22 04:00:00 EDT 1987

OSTI ID:6054328

Skinner, J L

In wellbore apparatus wherein a deep wellbore passes through at least one hydrocarbon fluid producing subterranean formation and an apertured liner is carried in the wellbore adjacent the hydrocarbon fluid producing formation, the liner defining an enclosed inner chamber within the liner and an external zone which extends from the outer wall of the liner to the wall of the wellbore is described. The improvement an elongated coilable tubing insertable into the wellbore. The coilable tubing is configured to include first conduit means having inner and outer walls and which communicates with the surface of the earth and extends into the inner chamber. The first conduit means has spaced apart nozzle means carried on a portion extending over the entire length of the first conduit means in the inner chamber and adapted to direct flow of fluid radially outwardly into the inner chamber. The nozzle means are arranged to induce vortex flow of fluid emitting from the nozzle means within the inner chamber, at least second conduit means having inner and outer walls and which is in fluid communication with the surface of the earth separately from the first conduit means. The second conduit means extending around the first conduit means and forming a generally annular zone between the inner wall of the second conduit means and the outer wall of the first conduit means to provide a path by which fluid and entrained solids are removed from the inner chamber by way of the second conduit means. The annular zone has a cross-sectional flow area approximately the same as the cross-sectional flow area of the first conduit means so as to maintain a flow velocity of the fluid which will prevent settling out of the solid particles in the inner chamber or the annular zone.

• Assignee: Atlantic Richfield Co., Los Angeles, CA
• Patent Number(s): US 4694901
• OSTI ID: 6054328
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DUCTS
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLUID FLOW
FLUIDS
LINERS
MATERIALS HANDLING EQUIPMENT
NATURAL GAS WELLS
NOZZLES
OIL WELLS
OPERATION
PARTICLES
PARTICULATES
PRODUCTION
REMOVAL
RESERVOIR FLUIDS
SOLIDS FLOW
TUBES
VORTEX FLOW
WELL RECOVERY EQUIPMENT
WELLS