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 ?
Flow tests were performed using the wells' natural bottom-hole pressure and was limited to the lower portion of the Ellenburger formation in the wellbore.
Faulkner added, "The initial bottom-hole pressure is coming in at 9000 psi and both existing fracs are intact and not watered out.
perforated, bottom-hole pressure was estimated to be approximately 11,650 psi.
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.
Sustained flow tests to evaluate bottom-hole pressure and to develop optimal flow rates are underway.
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.
Bottom-hole pressure data from shut in response predicts a maximum flow rate of 416bopd from this zone.
At this time, the oil and gas flow rate would be expected to increase substantially due to the lower flowing bottom-hole pressure.
Sonoran has concurrently re-completed a further 3 KWB wells in the Canyon which have tested gas with significant 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.