Bottom-hole Pressure

bottom-hole pressure

[′bäd·əm ‚hōl ‚presh·ər]
(petroleum engineering)
Gas-drive pressure recorded at the bottom of an oil-well shaft; used to analyze oil-reservoir performance and evaluate the performance of downhole equipment.
The pressure in a well measured at a point opposite the producing formation.

Bottom-hole Pressure

 

the pressure at the bottom of a working oil, water, or gas well. The pressure at the bottom of a standing or temporarily shut-in well is called the formation pressure. The bottom-hole pressure may be determined reliably by measuring with a depth manometer. Since producing beds (for example, oil beds) are never horizontal, hydro-dynamic analyses of bottom-hole and formation pressures are usually conducted as applied to some horizontal plane, taking into consideration the pressure of a column of bed fluid between the plane and the bottom of a given well. Consequently, a distinction is made between actual and reduced bottom-hole (formation) pressure.

References in periodicals archive ?
A step change in well operability has been realised through the combination of real-time bottom-hole pressure data from the ESP and the surface equipment Strike designed and built to take into account lessons learned from Klebb 1.
In each production scenario the bottom-hole pressure will be set above the bubble point pressure and the reservoir will be always undersaturated.
Meaningful and realistic data was retrieved from this environment for the first time and downloaded from the returned microchip that showed the dynamic bottom-hole pressure of 7,500 psi and circulating bottom hole temperature of 190 degrees Fahrenheit, consistent with static bottom hole pressure of 6,700 psi due to mud weight and wireline tool recorded static bottom hole temperature at 235 degrees.
Faulkner added, "The initial bottom-hole pressure is coming in at 9000 psi and both existing fracs are intact and not watered out.
Johnny Edwards, President of Energy Resource Technology GOM (ERT), a wholly owned subsidiary of Helix, stated, "Preliminary data from down-hole test tools confirmed oil in the Wang well with over 11,800 psi of bottom-hole pressure.
Johnny Edwards, President of Energy Resource Technology GOM (ERT), a wholly-owned subsidiary of Helix, stated, "Preliminary data from down-hole test tools confirmed oil in the Danny II well with over 9,500 psi of bottom-hole pressure.
MPO's Total Control Driller ("TCD") is an advanced MPD system that maintains constant bottom-hole pressure to mitigate many drilling hazards.
At this time, the oil and gas flow rate would be expected to increase substantially due to the lower flowing bottom-hole pressure.
Part of the West Koynare structure of the Lower Triassic Alexandrovo formation, the well has also recorded the highest bottom-hole pressure encountered in the country, measuring 11,500psi, as well as recording low sulphur content.
Shut-in casing and tubing pressures are 2,600 psi, indicating virgin bottom-hole pressure.
Calliope can achieve substantially lower flowing bottom-hole pressure than conventional production methods because it does not rely on reservoir pressure to lift liquids.