Underbalanced Drilling | UBD | Air Drilling

#UBD, #AirDrilling, #drillng

Please subscribe to Channel using the following link   / @petroproficient  

Conventional drilling is synonymous with overbalanced drilling where the drilling fluid exerts a hydrostatic pressure equal to or greater than the formation fluid (oil/water/gas) pressure of the formation. Underbalanced drilling (UBD) may then be simply defined as the opposite of overbalanced drilling, in that the adjacent wellbore pressure is reduced to a pressure below that of the reservoir pore pressure. Thus it must be concluded that formations drilled in an underbalanced fashion must have self-supporting integrity.

The application and properly executed technology of underbalanced drilling offers numerous potential advantages over conventional drilling techniques. Some of these advantages are as follows:

Increase in productivity due to a reduction in formation damage
Minimization/elimination of lost circulation material and associated cost
Elimination of potential for differential sticking (true underbalanced conditions prevail)
Increase in the rate of penetration (chip hold down effect reduced)
Eliminates the need for post well reservoir stimulation and clean-ups
Increase in bit life (less friction) and hence fewer bit trips
Reduced cost of expensive drilling mud programs
Provides access to severely depleted formations
Identification of fractures through production/pressure monitoring
Permits production while drilling and “early production” revenue
Potential for increased safety in high risk well control situations
Positive environmental impact from the closed loop system (no earthen pits)

Link to other Petro Proficient Videos

Enhanced Oil Recovery | Surfactant Flooding
   • 4. Enhanced Oil Recovery | Surfactant...  
Enhanced Oil Recovery | Carbon Dioxide
   • 3. Enhanced Oil Recovery | Carbon Dio...  
Enhanced Oil Recovery| Polymer Flooding
   • 2. Enhanced Oil Recovery | Polymer Fl...  
Enhanced Oil Recovery
   • 1. Enhanced Oil Recovery  
GLOSSARY OF OIL AND GAS TERMS| HYRDAULIC FRACTURING
   • Hydraulic Fracturing | GLOSSARY OF OI...  
Glossary Of Oil and Gas Terms | Barrel
   • Barrel | GLOSSARY OF OIL AND GAS TERMS  
Glossary Of Oil and Gas Terms | API Gravity
   • API Gravity | GLOSSARY OF OIL AND GAS...  
Well Completions| Introduction
   • Well Completions | Introduction  
Primary Well Control| Explained
   • Primary Well Control - Explained  
Oil and Gas Well Completion| Reservoir Rock Properties
   • Oil and Gas Well Completion | Reservo...  
Oil and Gas Well Completion| Well Test and DST
   • Oil and Gas Well Completion | Well Te...  
Oil and Gas Well Completion| Cementing and Perforation
   • Oil and Gas Well Completion | Cementi...  
Basic Well Control| Well Barriers
   • Basic Well Control | Well Barriers  
Secondary Well Control | Explained
   • Secondary Well Control | Explained  

Video Source: Shell Oil Company.


#UBD, #Drilling, #Oilandgas, #Offshore, #Oil, #Gas, #Completion, #Workover, #Wellhead, #Drillingfluid, #Workoverfluid, #Mud, #MudEngineering , #Brine, #DrillingMud, #Cement, #Cementing, #Drillpipe, #Downholetools, #Cellarpit, #Mudpits, #Rigs, #NaturalGas, #Petroleum, #PetroleumEngineering, #DrillingSupervisor, #DrillingEngineer, #WellControl, #IWCF, #IADC, #Chemical, #Chemicals, #Chemicalengineering, #Hazard, #Hazardous, #Safety, #DrillingSafety, #Blowout, #Kick, #Kickcontrol, #BOP, #Blowoutpreventer