Numerical and Experimental Assessment of Girth Welds Interacting with Wrinkle Anomalies

ABSTRACT: Two wrinkle-like features were discovered in two girth welds of an onshore, horizontal directionally drilled (HDD) 42-inch OD x 0.438-inch wall thickness, Grade X70 pipeline using a high resolution in-line inspection (ILI) tool. The HDD pipeline was buried at a depth of...

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Inflow Control Device Injection and Production Dynamic Integrity Testing – Best Practices

ABSTRACT: In recent years, the application envelope for inflow control devices (ICDs) has significantly shifted toward harsher environments, for example, to high temperature changes for SAGD, high production pressure differentials in wells with high reservoir permeability...

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Assessment, Mitigation, Management and Extension of Coke Drum Life Through Equipment Health Monitoring Systems and On Line Inspection

ABSTRACT: The reliability of coke drums has become a central theme to many refineries worldwide as high value products are recovered from refinery residuum. The severe thermal gradients inherent in the coking process have led to ever more frequent failures from cracks in bulges,...

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A Statistical Approach to Evaluating Single-Side Inlet vs Dual Inlet Temperature Distributions in Coke Drums

ABSTRACT: Slide valves used to unhead coke drums have had a significant impact on the safety and efficiency of the unheading process in these vessels. Therefore, many refiners have changed to the inherently different inlet flow nozzle configurations that the slide valves have...

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Assessment of the Critical Tilting Angle of a Coke Drum Vessel Subject to Seismic Loading

ABSTRACT: Assessment of a coke drum for seismic stability is generally a well-documented load case, with ample examples and historical design experience. However, the long-term effects of non-uniform temperature distributions have in many cases led to a phenomenon in coke drums...

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Comparison of Riser and Well System Response Predictions to Full-Scale Measurements in a Shallow Water Harsh Environment

ABSTRACT: Well system fatigue accumulated during drilling operations from mobile offshore drilling units (MODUs) has been a topic of intensive study in recent literature. A variety of efforts from individual operator studies to industry-wide joint industry projects have been...

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Strain-Based Pipeline Repair via Type B Sleeve

ABSTRACT Production and delivery of hydrocarbons in remote locations of the world may involve traversing regions which could expose pipelines to geohazards. These geohazards may include fault crossings, landslides, liquefaction, ice gouging, and frost heave. ExxonMobil has...

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Estimation of BOP Stack Drag and Added Mass Using Computational Fluid Dynamics

ABSTRACT: The hydrodynamic drag and added mass of a blowout preventer (BOP stack) influences the resonant amplitudes and frequencies of a drilling riser system during connected (low amplitude oscillations) and disconnected (high amplitude oscillation) conditions. The prediction of...

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Wellhead Fatigue Monitoring During Subsea Well Plug and Abandonment Activities

ABSTRACT: Wellhead fatigue monitoring was performed during Plug and Abandonment (P&A) activities of a well in the Gulf of Mexico (GOM). Fatigue monitoring was deemed necessary for several reasons: an older vintage of wellhead system with uncertain fatigue life consumption from...

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