Vibration-assisted annular fluid displacement for rig-less well abandonment operations
نویسندگان
چکیده
Through-tubing abandonment is the operation where production tubing cut or punched and cemented inside casing. This can establish a full cross-sectional barrier isolation in wells cement behind casing provides zonal isolation. Furthermore, form of through-tubing plug be placed from light-well intervention vessel, which reduces risk carbon footprint compared to conventional designs that rely on mobile offshore drilling unit. A potential challenge involved placing incomplete fluid displacement annulus tubing: The eccentricity may considerable should placed, original packer contaminated resulting unfavorable conditions. cannot reciprocated rotated compensate for these Agitator tools generate lateral axial vibrations mitigating potentially adverse conditions have recently become available industry. We study effects such by performing annular experiments using novel test rig enables movement inner tubing. displaced was viscosified with polymer additive apparent yield stress behavior thereby develop challenging conditions, particularly eccentric annulus. Experimental results supporting numerical simulations show motion effective displacing narrow side annulus, oppose tendency toward stratification both concentric annuli. further vibration improving displacements at inclinations ranging vertical 80° vertical, high frequency are more than lower same amplitude. Results mechanical analysis suggests amplitudes increase increasing flow rates, beneficial propagate over lengths comparable longer minimum length requirements. • Vibrations improve when rotation reciprocation not possible. Lateral stabilize displacement. magnitude induced rate. Higher improves any inclination studied.
منابع مشابه
Many-Server Fluid Queue with Abandonment
We consider the Gt/Mt/st + GIt many-server fluid queue with time-varying parameters, intended as an approximation for the corresponding stochastic queueing model, having general arrival process (the Gt), Markovian service (the Mt) and customer abandonment with mutually independent times to abandon with a general distribution (the +GIt) when there are many servers (the st) and the system experie...
متن کاملBayesian Analysis of Abandonment in Call Center Operations
In this paper we consider modeling abandonment behavior in call centers. We present several time to event modeling strategies and develop Bayesian inference for posterior and predictive analyses. Different family of distributions, piecewise time to abandonment models and mixture models are introduced and their posterior analysis is carried out using Markov chain Monte Carlo methods. We illustra...
متن کاملNonlocal DQM for Large Amplitude Vibration of Annular Boron Nitride Sheets on Nonlinear Elastic Medium
One of the most promising materials in nanotechnology such as sensors, actuators and resonators is annular Boron Nitride sheets (ABNSs) due to excelled electro-thermo-mechanical properties. In this study, however, differential quadrature method (DQM) and nonlocal piezoelasticity theory are used to investigate the nonlinear vibration response of embedded single-layered annular Boron Nitride shee...
متن کاملTricuspid annular displacement predicts survival in pulmonary hypertension.
RATIONALE Right ventricular (RV) function is an important determinant of prognosis in pulmonary hypertension. However, noninvasive assessment of the RV function is often limited by complex geometry and poor endocardial definition. OBJECTIVES To test whether the degree of tricuspid annular displacement (tricuspid annular plane systolic excursion [TAPSE]) is a useful echo-derived measure of RV ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Petroleum Science and Engineering
سال: 2022
ISSN: ['0920-4105', '1873-4715']
DOI: https://doi.org/10.1016/j.petrol.2022.110717