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Keywords: threshold
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Proceedings Papers
Advanced Shut-Down / Start-Up Analysis for Gas Hydrate Prevention in Subsea Production Systems
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35027-MS
... enables the design of hydrate-safe operations of subsea production systems. subsea system valve figure 7 recovery time flow assurance simulation start-up prevention procedure cdt geometry threshold warm-up time depressurization holdup time offshore technology conference type 2...
Proceedings Papers
Site Investigation and Risk Evaluation Using the Spatial Environmental Assessment Toolkit
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35225-MS
...., wave fields, water currents), sediment and larval dynamics (e.g., benthic, spawning habitats), and propagation of new acoustic signals (e.g., hearing thresholds). The toolkit of linked models and site-specific receptors will ultimately allow developers to determine optimal designs for MRE deployments...
Proceedings Papers
Axial Resistance of Drill & Grouted Well Conductors in Deepwater Clays Based on Operational Experience
Available to PurchaseJinbo Chen, Fabio S. Cutrim, Charlton O. de Souza, Bruno SP. de Souza, Shuang Hu, Jason A. Newlin, Naisa VC. Arturo, Nelson M. Junior
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32321-MS
... distribution. Other uncertain variables include the conductor axial capacity model bias (resulting from the uncertain soil undrained shear strength as shown in Figure 2 ), the predicted maximum load on the WH, and the observational accuracy (i.e., the threshold of the 10 cm). The bias factor for the axial...
Proceedings Papers
Harnessing Leak Detection System in Offshore Pipeline Operation
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32374-MS
... solar panel and telecommunication bandwidth should be monitoring all the time. Parallel with that, there is the possible threshold setting should be estimated as per API 1149 that impact on leak detection performance from several factors i.e. accuracy of pressure, flow, and temperature transmitter...
Proceedings Papers
Interrupt Criteria for DP-Operated Facilities
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32457-MS
... threshold significant wave height deepsea bergen exponential distribution rayleigh distribution extreme value forecast non-exceedance probability surge criteria quantile The particulars of the DP system are also shown in Table 1 . The DP system essentially provides restoring stiffness...
Proceedings Papers
Dynamic Operations for Wax Removal, a Challenge on Pre-Salt Oil Wells
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31989-MS
... remediation oilfield chemistry scale inhibition remediation of hydrates efficiency wax remediation reservoir surveillance production chemistry upstream oil & gas service line dynamic method gas top-up threshold service network diesel operation production control hydrate remediation...
Proceedings Papers
Inferring the Effect of Chemical Injections for Asphaltene Producing Deepwater Wells Using Machine Learning
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31955-MS
... reconstruction of the original input. Anomaly score and threshold as ML outputs are streamlined in near real-time back to the database to serve the operators. Following this, further analytics is conducted toassess the impact of chemical soaks on anomalies. In this work, ML model output is benchmarked against...
Proceedings Papers
Novel Design Approach to Create Deep Water Metallic Buoyancy Modules
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31249-MS
... drilling fluids and materials upstream oil & gas equivalent density geometry internal structure module optimization algorithm buoyancy module threshold algorithm offshore technology conference von mise stress iteration volume fraction buoyancy tank hydrostatic pressure Introduction...
Proceedings Papers
Research on Robust and Efficient Approach for Extreme Mooring Tension Estimation for FLNG and FOWT
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31063-MS
... the expected maximum value of tension statistically based on the calculation of which duration time is minimum three hours. And the following statistical approach methods, which approximate the peak values over threshold based on maximum likelihood method is recommended [ 3 ]. 3 variable Weibull...
Proceedings Papers
A Machine Learning Workflow to Predict Anomalous Sanding Events in Deepwater Wells
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31234-MS
..., is deployed. Anomaly detection models include methods within the scope of dimensionality reduction. Principle Component Analysis (PCA) and Long Short-Term Memory (LSTM) Autoencoders are deployed to tackle the problem through reconstruction of the original input. During the workflow, a threshold is calculated...
Proceedings Papers
Managing Risks Associated with Upstream Oil and Gas Field Operations: A Specialized Field Risk Management SFRM Program
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30472-MS
..., receptor types, impact thresholds, screening methodology, dispersion modelling, and risk mitigation measures. The SFRM program supports the company's proactive approach towards managing risk and increases company confidence with the assurance of the identification and management of risks associated...
Proceedings Papers
Pilot Study of Integration of Wildlife Impact Analysis into Spatial Environmental Assessment Tool for Marine Hydrokinetic Energy
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30693-MS
... area was defined as a "sensitive resource" input ( Receptor ), using the Risk ( Rτ ) output points from the SEAT model to identify areas that could be impacted by the operation of a MHK device ( Threshold ). Risks were further investigated by overlaying federally designated Habitat of Potential...
Proceedings Papers
Smart Monitoring and Failure Forecasting for In-Line Blowout Preventer Valves
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30722-MS
... usage cycles, from several separate signals. This created a dense data set of time series data identifying equipment loading cycles allowing analysis of a reliability centered maintenance health assessment and threshold. Historical usage was analyzed and forecasted using autoregressive integrated moving...
Proceedings Papers
Automatic Slip Status and Stand Detection in Real-Time Drilling
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29372-MS
.... The proposed method is designed to infer the slip status with hookload, standpipe pressure (SPPA), and surface torque (STOR) sensor data. Specifically, the logic using hookload includes two criteria, a hookload standard deviation criterion and a dynamic hookload threshold criterion. This allows addressing...
Proceedings Papers
Assessment of Wind Energy in the United States Gulf of Mexico Area as Power Supply for Offshore Oil Platforms
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-29044-MS
... above the commercial threshold and an important percentage of the locations produced power levels above capacity factor thresholds that made them exceptionally productive. Overall results indicated that all the locations were within accepted feasible distance from the coast and most of them had...
Proceedings Papers
Non-Parametric Method for Estimating Extreme N-Year Profiles for Loop Current and Eddies
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27520-MS
.... The current data consists of mode shapes and amplitudes of the first three empirical orthogonal functions. Profiles for return period up to 100 years are computed so the statistical extrapolation is not required. In the non-parametric method, a peaks-over-threshold (POT) technique is first used to extract...
Proceedings Papers
An Innovative Regional Approach to the Analysis of Hurricane Impact on Offshore Platforms
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27647-MS
... mexico machine learning upstream oil & gas homogeneous region significant wave height extreme value analysis regional distribution sea state artificial intelligence outlier threshold extreme event gulf regional frequency analysis extreme sea state application quantile Bardet...
Proceedings Papers
A Practical and Interdisciplinary Framework to Develop Post-Earthquake Evacuation and Inspection Thresholds for Offshore Platforms
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27615-MS
... framework for developing post-earthquake inspection and evacuation thresholds based on information that will be available immediately after the earthquake, such as an estimate of earthquake magnitude and epicenter location from the United States Geological Survey (USGS) website. Assessing the structural...
Proceedings Papers
Pipeline Leak and Impact Detection System - PipeLIDS - Monitoring Product Dedicated to Onshore Pipelines
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27026-MS
... measurement and control pressure surge 11th band frequency band pipeline leak detection leak simulation riser corrosion pipelid materials and corrosion midstream oil & gas false alarm application threshold offshore technology conference joule impact noise acoustic signal...
Proceedings Papers
An Historical Perspective of Loop Activity from Nov. 2014 to Oct. 2015
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-26979-MS
... in part because they require extensive use of ROVs that typically have an operating limit of about 1.5 kt. Operating thresholds may be even lower for the mating of the floating hull with the moorings, such as the installation of Tension Leg Platforms (TLPs). Moreover some of these installations require...
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