10,323
edits
Changes
Jump to navigation
Jump to search
mLine 85:
Line 85: − + Line 97:
Line 97: − + Line 207:
Line 207: − + Line 345:
Line 345: +
added Category:Methods in Exploration 10 using HotCat
| JIF || Jet impact force || lb
| JIF || Jet impact force || lb
|-
|-
| FFP || Formation fracture pressure || psi
| FFP || Formation [[fracture]] pressure || psi
|-
|-
| T% Hhpb || Total percentage hydraulic horsepower at the bit || %
| T% Hhpb || Total percentage hydraulic horsepower at the bit || %
* The density of the liquid (mud weight)
* The density of the liquid (mud weight)
The total volume of liquid or shape of the hole have no influence on hydrostatic pressure, but the height of the liquid column (depth) must be measured in the same direction as the force due to gravity, that is, true vertical. This consideration is important in highly deviated and horizontal wellbores. The hydrostatic pressure (P) at any depth in a wellbore is calculated as follows:
The total volume of liquid or shape of the hole have no influence on hydrostatic pressure, but the height of the liquid column (depth) must be measured in the same direction as the force due to [[gravity]], that is, true vertical. This consideration is important in highly deviated and horizontal wellbores. The hydrostatic pressure (P) at any depth in a wellbore is calculated as follows:
:<math>\mbox{P} = 0.052 \times \mbox{MW} \times \mbox{D}</math>
:<math>\mbox{P} = 0.052 \times \mbox{MW} \times \mbox{D}</math>
Bottoms-up circulation, or ''lag time'', is the time for samples or gas created at the bit to arrive at the surface (via the drilling fluid) for examination. This calculation is dependent on the volume and rate.
Bottoms-up circulation, or ''lag time'', is the time for samples or gas created at the bit to arrive at the surface (via the drilling fluid) for examination. This calculation is dependent on the volume and rate.
After calculating wellbore volumes and mud pump output, several parameters for the circulating time of the drilling fluid can be estimated. The most routinely used of these parameters are
After calculating wellbore volumes and mud pump output, several parameters for the circulating time of the [[drilling fluid]] can be estimated. The most routinely used of these parameters are
* surface-to-bit pump strokes,
* surface-to-bit pump strokes,
[[Category:Wellsite methods]] [[Category:Pages with unformatted equations]]
[[Category:Wellsite methods]] [[Category:Pages with unformatted equations]]
[[Category:Methods in Exploration 10]]