annular velocity

annular velocity

[′an·yə·lər və′läs·əd·ē]
(petroleum engineering)
The rate of movement of the mud in the annular space of a drilling well.
References in periodicals archive ?
In the AM Group 2, significant improvements were noted in diastolic function 12 months after treatment than those of the control group, including the early diastolic mitral annular velocity (E'; 0.
Peak systolic annular velocity recorded at speed of 75 mm/s for subsequent analysis.
Tricuspid annular velocity assessed by Doppler tissue imaging as a marker of right ventricular involvement in the acute and late phase after a first ST elevation myocardial infarction.
Annular velocity for an XSR unit with a traditional 2-7/8-inch motor at 2.
TAPSE, pulsed or tissue Doppler derived RV MPI, peak systolic tricuspid annular velocity, fractional area change and RV dP/dt have been recently proposed as tools for assessment of RV systolic function (3).
Tissue Doppler parameters were measured: early diastolic mitral annular velocity (Em) and late diastolic mitral velocity (Am).
The effectiveness of mud in removing the cuttings from the hole depends on several factors such as fluid viscoelastic properties, annular velocity, angle of inclination, drilled cuttings size and their shape.
The volume includes equations for problems such as mud weight, hydrostatic pressure, pressure gradients, annular velocity, control drilling, and circulating hydraulic horsepower.
The mean early diastolic mitral annular velocity (mean Em) showed negative correlation with mitral inflow early diastolic velocity (E) (p=0.
While standard oil field drilling uses annular velocity (speed the fluid travels outside the drill pipe and inside the well bore) to help lift the solids, the HDD drilling crews have to substantially increase the viscosity over that in the oil field to achieve the same carrying capacity due to the larger diameter holes being drilled horizontally.
If it shows that the ratio of peak early mitral inflow velocity to peak late diastolic mitral annular velocity is shortened and deceleration time in the left ventricle is less than 150 milliseconds, then we know that the patient has the increased left ventricular stiffness and very high filling pressures that are indicative of diastolic dysfunction.