What does MPD mean in oil and gas?

Achieve unmatched safety and cost savings. Managed pressure drilling (MPD) started as an essential technique for drilling wells with narrow pore-pressure, fracture-gradient windows.

What is PMCD drilling?

The International Association of Drilling Contractors defines PMCD as a variation of MPD that involves “drilling with no returns to surface, where an annulus fluid column, assisted by surface pressure, is maintained above a formation that is capable of accepting fluid and cuttings.” PMCD grew out of practical …

What is rotating control device?

A rotating control device (RCD) is a side exit swivel that establishes a seal with the rotating drillstring of an oil well to contain well pressure and divert the drilling fluid that is returning to the surface. Lubricant is provided to lubricate the seals and bearings.

What is mud cap?

: a blasting method in which explosive is placed on the surface of a rock fragment and covered with mud or clay. — called also adobe. mudcap. transitive verb.

What is MPD fingerprinting?

MPD operations began with fingerprinting to identify expected pressure trends, and in-casing tests to confirm and fine-tune system operation. Tests in cased hole were performed prior to drilling each new section to establish limits and procedures.

What is dual gradient drilling?

Dual gradient drilling (DGD) technology involves creating two or more depths versus pressure gradients in the returns path. The concept itself dates to the 1960s, and during the 1990s the technique gained favor as an underbalanced drilling (UBD) technique on land drilling programs.

What is a rotating head drilling?

A rotating pressure-sealing device used in drilling operations utilizing air, gas, foam, or any other drilling fluid whose hydrostatic pressure is less than the formation pressure.

Why ECD is important in drilling?

ECD is a key parameter during drilling through formations where the margin between the pore pressure and the fracture pressure (FP) is narrow. In these critical formations, the ECD is used to control the formation pressure and prevent kicks.

How much are fingerprints in DC?

Cost is $5 per card.