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Keywords: hydrate
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Proceedings Papers
Comparing High Saturation Hydrate-Bearing Sand Reservoirs in the Northern Gulf of Mexico
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35872-MS
... Abstract High porosity, high saturation natural gas hydrate-filled sands are of interest as potential natural gas reservoirs. We describe and compare the two most explored high saturation hydrate-bearing reservoir sands in the northern Gulf of Mexico, the Sigsbee sand in Green Canyon block 955...
Proceedings Papers
The Geomechanical Behavior of Hydrate Reservoirs: Implications for Drilling and Production
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35944-MS
... Abstract We performed uniaxial compression tests on specimens from a sandy silt reservoir with a hydrate saturation greater than 80% and on specimens of the same reservoir without hydrate present. During loading, the hydrate-bearing reservoir samples are stiffer than equivalent samples without...
Proceedings Papers
Geologic Controls on Gas Hydrate Accumulations and Associated Geohazards
Available to PurchaseHugh Daigle, Anne Bécel, C. J. Grall, Nathaniel C. Miller, Wayne E. Baldwin, James Gibson, Ali Mohamed
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35738-MS
... Abstract Gas hydrates and shallow gas are common hazards encountered during drilling. They also are important components of the global carbon cycle and a potential energy resource. Predicting the occurrence of free gas and hydrates, particularly highly concentrated accumulations, is therefore...
Proceedings Papers
Characterization of Gas Hydrate Deposits in Probable Sandy Facies and Its Related Depositional Processes, East Coast Deep Water Basin, India
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35997-MS
... Abstract Gas Hydrates represent vast energy resources and are considered to be a potential clean fuel of the future. Under the National Gas Hydrate Program (NGHP), DGH and ONGC have been carrying out research work for exploration and development of the gas hydrates in Indian Offshore. Based...
Proceedings Papers
Numerical Study on the Impact of Deep-Water Shallow Gas Reservoir Production with Overlying Natural Gas Hydrate Layer on Wellhead Stability
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35638-MS
... Abstracts The results of the on-site geological exploration of Block XX-1 in the South China Sea indicate the existence of a geological composition of deep-water shallow gas overlying hydrate layer. Prior studies have not sufficiently considered the impact of shallow gas on the overlying...
Proceedings Papers
International Gas Hydrate Research and Development
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35912-MS
... Abstract Gas hydrates are increasingly acknowledged as a potential future natural gas resource, sparking extensive global research into their geological characteristics and the technology needed for production. This paper offers a comprehensive review of gas hydrate-related research initiatives...
Proceedings Papers
Numerical Simulation of Conductor Stability in Deepwater Hydrate-Bearing Formation
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35712-MS
... Abstract Deepwater natural gas hydrates have attracted widespread attention as a clean energy resource, but their decomposition process will significantly change the physical and mechanical properties of the formation, posing a threat to the stability of the casing during drilling. Deepwater...
Proceedings Papers
Hydrate Reformation Characteristics in Offshore Natural Gas Hydrate Reservoir Using the Horizontal Well Depressurization Production
Available to PurchaseJianbo Zhang, Xiaoao Liu, Jiazheng Luo, Xiaohui Sun, Jie Zhong, Zhiyuan Wang, Weian Huang, Baojiang Sun, Xiao Wang
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35856-MS
... Abstract During depressurization production of natural gas hydrate, the reformation of hydrate is likely to occur in the reservoir, hindering the efficient development of hydrate. Previous studies on the reformation of hydrate in the process of natural gas hydrate production were mainly focused...
Proceedings Papers
Submarine Continental Slopes Stability Prediction of Natural Gas Hydrates Based on Machine Learning
Available to PurchaseYu Chen, Yufa He, Yixuan Wang, Yunjian Zhou, Qiang Fu, Xuwen Qin, Dingyuan Liu, Zheng Tian, Kexin Zhang
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35825-MS
... Abstract In the process of extracting naturally-occurring oceanic gas hydrates, the dissociation of hydrates can cause a reduction in soil strength. This reduction has the potential to trigger slope failure and submarine landslides, which present a catastrophic threat to offshore facilities...
Proceedings Papers
Study on Sand Production in Natural Gas Hydrate During Radial Wells Depressurization Exploitation
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35185-MS
... Abstract Radial wells are recognized as a promising type of well for achieving the commercial development of natural gas hydrate (NGH). Previous research has confirmed the positive impact of radial wells on enhancing the efficiency of NGH exploitation. However, the impact of radial wells...
Proceedings Papers
The Energy Reducing and Safety Concept for CO 2 Injection Platform
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35173-MS
... of solidification such as dry ice and CO 2 hydrate via process simulation and lab scale experiments. The results indicated the risk of dry ice is affected from circumstance and phase of CO 2 . The CO 2 hydrate risk is assessed by conducting a matching experimental data of batch reactor with experimental data...
Proceedings Papers
How Anti-Agglomerant Can Replace MEG to Mitigate Hydrate Risk in Mature Gas Field?
Available to PurchaseSimon Rocoulet, Rym Khiari, Hani Shobaki, Rudy Arnault, Emerick Labielle, Annie Fidel-Dufour, Nicolas Lesage, Charlotte Drouilly
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35138-MS
... In normal operation, a gas condensate field can be operated in pressure and temperature conditions where hydrates are stable. To mitigate the formation and deposition of hydrates, Mono Ethylene Glycol (MEG) is injected in the subsea flowline at high concentration (30 to 60% vol. versus water...
Proceedings Papers
Wax/Hydrate Flow Assurance of North Sea Pipeline-Riser System Using Integrated Production Modelling
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35134-MS
... Abstract Flow assurance problems usually impede fluid transfer across process facilities especially in low-temperature regions, where oil and gas produced contain more wax as fields mature, and hydrates form at certain temperatures and pressures in facilities transporting acidic gases produced...
Proceedings Papers
Physics-Informed Neural Networks for Gas Hydrate Plugging Risk Assessment Using Intrinsic Kinetics and Flowloop Data
Available to PurchaseSeth Dale, Doug Turner, Salar Afra, Adriana Teixeira, Leandro Saraiva Valim, Carolyn Koh, Dinesh Mehta
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35362-MS
... for a designated number of iterations (epochs) or until ℒ if minimized below some predetermined value. There has been demonstrated success in the application of DNNs to hydrate plugging. Qin et al. developed a DNN for this problem [6] trained on data from two laboratory-scale flowloops. The network showed...
Proceedings Papers
Stability Analysis of Submarine Hydrate-Bearing Slope During Depressurization Production
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35501-MS
... Abstract South China Sea hydrate reservoirs, mostly weakly cemented silty sandstones, are prone to landslides during extraction. Prior studies have inadequately considered factors such as dynamic decomposition of hydrates during depressurization, and the impacts on the reservoir's geomechanical...
Proceedings Papers
Techno-Economic Study with Integrated CO 2 e Emission Model of Novel Pseudo Dry Gas Technology for Mixed Oil/Gas Development via Traditional Concept
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35324-MS
... subsea separation coupled with mitigation of flow assurance concerns, primarily hydrates. The performance of the PDG unit was predicted by linking the field data with PDG test data. The test was conducted on a 6" flow loop with 6" PDG prototype with pilot scale unit, covering the operational pressure...
Proceedings Papers
Overcoming Flow Assurance Issues in Deepwater Gas Well Testing and Clean-Up Operations: Best Practices and Lessons Learned
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35484-MS
... assurance aspects that are beyond the standard welltest playbook. Several failures and operational issues related to flow assurance such as the plugging of pipelines and/or tubing by wax or hydrates have hindered the interpretability of data, compromised well test objectives, significantly increased...
Proceedings Papers
Evaluating Subsea Capping Stack Usage for CO 2 Blowouts
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35246-MS
... Abstract Given the challenges posed by CO 2 's distinct thermophysical properties (i.e., its expansive behavior and attendant risks of causing hydrate, dry ice, and/or water ice formation), a dynamic multiphase flow simulator is employed to evaluate the effectiveness and suitability of using...
Proceedings Papers
What to Learn from a Hydrate Remediation Operation in a West-African Deep-Water Production Well?
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35321-MS
... Abstract Hydrates are one of the most serious issues in deepwater production systems. Remediation operations are usually time-consuming and expensive, especially if the low-cost methods using the existing infrastructure e.g. injecting thermodynamic hydrate inhibitor (THI) at the vicinity...
Proceedings Papers
Wellbore Integrity During Production and Drilling Risk Analysis in Gas Hydrate Bearing Sediments by Coupled THMD Model
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32322-MS
... Abstract Wellbore integrity in a gas hydrate bearing formation during drilling and production is a great challenge in the energy industry since a complex thermal-hydraulic-mechanical interaction with decomposed solid hydrate process is involved. A wellbore temperature increase...
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