downhole
Into the well
Downhole describes operations, equipment, or conditions located within a drilled well, particularly in oil and gas extraction.
Downhole tools and downhole sensors operate deep underground, distinct from surface equipment.
The term appears in technical contexts: downhole pressure, downhole temperature, downhole measurements.
As an adverb, it indicates direction into the wellbore: They lowered the instrument downhole.
Enclosing cover or frame
- tubingHollow cylindrical conduit
- packerOne who boxes goods
- linerInner protective covering
- hangerCloset garment support
perforation · cementing · completion · pump · valve · submersible · screen · stimulation
Input-detecting device
- gamma-rayHighest-energy electromagnetic wave
- resistivityMaterial's inherent current opposition
- sonicRelating to sound waves
- acousticRelating to sound
logging · formation · evaluation · porosity · permeability · caliper · neutron · density
Drilled underground passage
- wellboreDrilled subsurface hole
- drillbitRotating hole-making implement
- torqueRotational force measurement
- rotationTurning on an axis
circulation · hydraulics · reaming · tripping · kickoff · directional · measurement · collar
casing
Enclosing cover or frame
hanger · perforation · cementing · completion · pump · valve · submersible · screen · stimulation · workover
sensor
Input-detecting device
- gamma-rayHighest-energy electromagnetic wave
- resistivityMaterial's inherent current opposition
- sonicRelating to sound waves
acoustic · logging · formation · evaluation · porosity · permeability · caliper · neutron · density · imaging
borehole
Drilled underground passage
- wellboreDrilled subsurface hole
- drillbitRotating hole-making implement
- torqueRotational force measurement
rotation · circulation · hydraulics · reaming · tripping · kickoff · directional · measurement · collar · stabilizer
hydrocarbons
Carbon-hydrogen organic compounds
fluids · pressure · temperature · oil · gas · water · saturation · migration · trap · seal
downholesurface
Outermost boundary layer
topside · aboveground · surface-level · wellhead · ground level
down, hole, downtown, download, downtime, downwards, downloads, downloaded, downdraft