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 ?
Significant reductions from baseline were seen in left atrial volume index (LAVI), LV end-diastolic volume index (LVEDVI), LV end-systolic volume index (LVESDI), and mitral ratio of early transmitral Doppler velocity/early diastolic annular velocity (E/e') with sacubitril-valsartan.
Right ventricular function in patients with first inferior myocardial infarction: assessment by tricuspid annular motion and tricuspid annular velocity. Division of Cardiology, Karolinska Institute at South Hospital, Sweden.
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'; 0.065 [+ or -] 0.007 m/s vs.
The multivariate logistic model had the LAVi group as a dependent variable and all the investigated parameters as independent variables, including age, body mass index, race, baseline indexed left ventricular end-diastolic volume (LVEDVi), baseline indexed left ventricular end-systolic volume (LVESVi), creatinine, ACEI use, nitrate use, LVEF, early and late mitral inflow velocities and their ratio, deceleration time, septal, mitral, and average mitral annular velocities, and the ratio of the mitral inflow velocity to the average mitral annular velocity.
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.
Note that the bed is called a "solidified bed" (Figure 9, the bottom section) when it has been compacted in a time period and cannot be dispatched by only raising annular velocity without initiating pipe rotation.
Annular velocity for an XSR unit with a traditional 2-7/8-inch motor at 2.5 bpm exceeds that of a 2-inch coiled tubing unit by 25 fpm.
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).
Left ventricle (LV) systolic function was analyzed by calculating left ventricle ejection fraction (LVEF), measured using Simpson's method, and by obtaining left ventricle longitudinal function parameters, as mitral annular systolic plane systolic excursion (MAPSE) with M-mode and mean peak systolic annular velocity with pulsed tissue-Doppler (mitral S') by averaging values measured at septal and lateral mitral annulus [13].
In other words, it was the point where the location of the maximum annular velocity reached the centreline of the jet configuration.
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.