Downhole material injector for lost circulation control

Patent · 06 September 1994

OSTI ID:7242270

Glowka, D A

Apparatus and method are disclosed for simultaneously and separately emplacing two streams of different materials through a drill string in a borehole to a downhole location for lost circulation control. The two streams are mixed outside the drill string at the desired downhole location and harden only after mixing for control of a lost circulation zone. 6 figs.

• DOE Contract Number: AC04-76DP00789
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 5343968; A
• Application Number: PPN: US 7-686442
• OSTI ID: 7242270
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300 -- Petroleum-- Drilling & Production
42 ENGINEERING
422000* -- Engineering-- Mining & Underground Engineering-- (1980-)
CONTROL
CURING
DESIGN
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
LOST CIRCULATION
MATERIALS HANDLING
MIXING
PERFORMANCE
PLUGGING AGENTS
WELL INJECTION EQUIPMENT
WELLS