introduction to drilling
Why We Drill
TO GET THE BLACK GOLD ( OIL ) & GAS
TO GET WATER FROM UNDERNEATH
TO KNOW THE SUB-SURFACE
Prospect Selection
In case of Production wells, prospect selection is identified by the need to maintain or increase reservoir production
Exploration wells require geological and geophysical data
gathering, processing and evaluation
Surface geological study
Subsurface mapping
Identification of structures e.g. anticlines, salt domes, fault traps, sand bodies lenses
Seismic Evaluation
Historical Background
1808 PERCUSSION DRILLING BY CHINESE
FIRST COMMERCIAL WELL
1859 CABLE TOOL PERCUSSION DRILLING
1918 WORLD DEEPEST WELL BY CABLE
TOOL ( 7386 ft )
1930 ROTARY DRILLING
What are the different Well Locations in terms of Drilling
Onshore and Offshore
ADVANCEMENTS IN ROTARY DRILLING
DIRECTIONAL DRILLING
HORIZONTAL DRILLING
MULTILATERAL DRILLING
COIL TUBING DRILLING
Drilling Hazards
Tools dropped while drilling
Pipe stuck
Increased size of hole
Lost circulation problems
Sloughing shale
What we call a successful Drilling Operation
Through which we get our desired
results without any accidents.