Hydrostatic pressure
Fluid density and vertical depth set this contribution.
Managed Pressure
How MPD Manages Pressure
See how flow and backpressure change the pressure profile.
CHARGER SERVICESPRESSURE. EQUIPMENT. PEOPLE.
01 / Pressure balanceFluid column Circulation Surface control
Understand the contributions
At a selected depth, three contributions shape a simplified pressure balance.
Annular friction
Moving fluid adds pressure loss along the return path.
Applied backpressure
A suitable system adds an adjustable surface contribution.
What does “virtual mud weight” mean?
Surface backpressure can be expressed as an equivalent density increment at a chosen true vertical depth: ΔMW = ΔP / (0.052 × TVD), with pressure in psi, depth in feet and density in ppg. This is an analogy for an added pressure contribution, not a uniform change in the physical density of the mud.
The simplified total is hydrostatic pressure + annular friction + surface backpressure. Compressibility, acceleration, temperature, fluid properties and equipment dynamics require a fuller engineering model.
02 / Pump transition
Explore a connection
Stop circulation. See friction fall. Compare the backpressure contribution.
Explore pressure propagation03 / Operating envelopeFormation Equipment Execution
Review operating limits
Pressure control depends on the complete well and system.
Window along the well
Review constraints at each exposed formation, not only bottomhole.
Review formation effectsRated operating envelope
Establish pressure, temperature, flow and material compatibility.
Review system requirementsDefined response
Agree responsibilities, barriers, limits and escalation before operation.
Review commissioningMPD supplements the well-control program. These educational models do not establish field operating limits.
THE NEXT CONVERSATIONDefine the work.
Discuss your well