Method and apparatus for forming and using a borehole

Patent · Tue Feb 14 04:00:00 EST 1984

OSTI ID:6928025

Dickinson, B W.O.; Dickinson, R W

A system is disclosed for the formation and use of a borehole, particularly for the recovery of oil from an oil-bearing underground formation. An eversible elongate permeable tube, preferably formed of woven cloth, including other and inner walls, connected at a rollover area, is urged into the formation by a driving fluid. Drilling fluid is pumped through a central passageway in the tube and carries a central pipe forward. The drilling fluid, comprising a hot acid or basic aqueous or petroleum base solution, assists break up of the formation to form a cuttings slurry which passes back along the outside of the eversible tube. Means is provided for turning the tube, as from the vertical to the horizontal, by use of a turning segment in the eversible tube, or by guiding the central pipe. Such pipe preferably includes a flexible helical segment capable of turning and of serving as the ultimate support casing. Also, gravel packing techniques and down-hole steam generators.

• Assignee: EDB-84-105425
• Patent Number(s): US 4431069
• OSTI ID: 6928025
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
BENDING
BOREHOLES
CAVITIES
CUTTINGS REMOVAL
DESIGN
DIRECTIONAL DRILLING
DISPERSIONS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
DRILLING FLUIDS
EQUIPMENT
FLEXIBILITY
FLUIDS
HOSES
MECHANICAL PROPERTIES
MIXTURES
OIL WELLS
PACKINGS
PIPES
REMOVAL
SHAFT GUIDES
SLURRIES
SUSPENSIONS
TENSILE PROPERTIES
TEXTILES
WELL CASINGS
WELL COMPLETION
WELL DRILLING
WELLS