The definition of High-Pressure High-Temperature (HPHT) is:
- High-pressure wells have a pressure greater than 15,000 psi (103 Mpa)
- High-temperature wells have a temperature above 177 degrees Celsius
Some of the conditions that occur when HPHT Operation is performed:
- Because the Bottom Hole is located close to the Geothermal Hotspot, the temperature under the Hole quickly increases
- Steam injection used to help produce heavy oil can greatly increase the bottom hole temperature
- Deepwater wells can have high pressure & temperature due to the Geothermal Gradient
- Wells drilled with oil-based mud systems tend to have higher downhole temperatures
Various things that should be done so that HPHT Operation can be carried out safely:
- Drillers must predict pore pressures before drilling into the formation
- Engineers have to calculate pressure using Hydrostatic Gradient-based on the weight of seawater
- To reduce the effect of high pressure, Engineers focus on metallurgy & sealing
- For Well Operation to be carried out safely, Engineers must use proper equipment
- To ensure that the equipment used is the right one, Operators must first know the maximum pressure potential
- To ensure that operation can be carried out safely, the equipment must be functionally tested before use
- To prevent formation fluids from entering the wellbore during drilling, Engineers use weighted drilling fluids
- Drilling fluid can be cooled before being circulated down the hole to protect sensitive BHA components
- Hydrostatic pressures higher than those predicted by the Normal Pressure Gradient are often required to overcome reservoir pore pressures
Some of the emergencies that usually occur when the HPHT Operation is performed:
- Lost time
- Broken equipment
- Injured personnel
The personnel who work in HPHT need the right knowledge & skills, special equipment & regular training.
Information: https://www.samson-tiara.co.id/Course/HPHT-High-Pressure-High-Temperature-Drilling-Operations/
#samsontiara #Firefighting #FireSafety #SafetyTraining #SurvivalTraining #safety #survival #training #education #oil #gas #industry #offshore #onshore #oilandgas #digital #online #elearning
No comments:
Post a Comment