Definition(s)
Ambient Pressure
Pressure external to the wellhead
- Note 1 to entry: In the case of a surface wellhead, the pressure is 0 kPa (0 psig). In the case of a subsea wellhead, it is equal to the hydrostatic pressure of seawater at the depth of the subsea wellhead.
[SOURCE: API RP 90, modified]
Source: ISO 16530-1:2017, Petroleum and natural gas industries – Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards
Ambient Pressure
Pressure external to the wellhead. In the case of a surface wellhead, it would be zero psig. In the case of a subsea wellhead, it would be equal to the hydrostatic pressure of seawater at the depth of the subsea wellhead in psig.
Source: API RP 90, Annular Casing Pressure Management for Offshore Wells, Upstream Segment. First Edition, August 2006. Global Standards
Ambient Pressure
Pressure external to the wellhead. In the case of a surface wellhead it would be 0 psig. In the case of a subsea well head, it would be equal to the hydrostatic pressure of seawater at the depth of the subsea wellhead in psig.
Source: API STD 65 – Part 2, Isolating Potential Flow Zones During Well Construction, Upstream Segment, Second Edition, December 2010. Global Standards
Ambient Pressure
“Ambient pressure” means the pressure at any given depth (pression ambiante).
Source: Canada Oil and Gas Diving Regulations, SOR/88-600, February 2013. Regulations
Source: Nova Scotia Offshore Area Petroleum Diving Regulations, SOR/95-189, Canada, current to May 31, 2012. Regulations