Day 3 Wed, August 18, 2021最新文献

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A Critical Assessment of Deepwater Gulf of Mexico Floating Platform Engineering, Procurement, Construction and Installation EPCI Contracting Strategies and Cycle Times 墨西哥湾深水浮式平台工程、采购、施工和安装EPCI合同策略和周期时间的关键评估
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/31155-ms
R. D'souza, Shiladitya Basu
{"title":"A Critical Assessment of Deepwater Gulf of Mexico Floating Platform Engineering, Procurement, Construction and Installation EPCI Contracting Strategies and Cycle Times","authors":"R. D'souza, Shiladitya Basu","doi":"10.4043/31155-ms","DOIUrl":"https://doi.org/10.4043/31155-ms","url":null,"abstract":"\u0000 A major objective of a greenfield deepwater field development with a host platform, is to achieve the first production milestone set at project sanction. A field development consists of subsurface characterization, reservoir depletion, drilling and completion, subsea production system, host platform and export system. Of these, the floating host platform is a major capital expense and presents a significant execution challenge. Over fifty deepwater floating platforms have been installed in the US Gulf of Mexico (GoM) since 1986, representing the four major platform options; spars, semisubmersibles, Tension Leg Platforms (TLPs) and Floating Production Storage and Offloading (FPSO) platforms, operated by International, Independent and National Oil Companies. They are installed in water depths ranging from 500 m to 3,000 m, with production capacities from 40,000 to over 250,000 barrels of oil equivalent per day (boepd). Over this period the technologies, operator, and supply chain capabilities to execute deepwater projects have matured.\u0000 An operator embarking on a deepwater project must credibly benchmark cycle times for sequential field development stages (Appraise, Select, Define and Execute). Many variables determine these cycle times including reservoir characterization, fluid properties, estimated recovery, location, access to pipeline networks, water depth, subsea architecture, platform size and complexity and contracting strategy.\u0000 To provide these benchmarks, the authors have undertaken a critical assessment of ten recent, producing deep and ultra-deepwater field developments in the US GoM, focusing on project execution of the floating platform. Selected field developments capture all floating platform types, several contracting strategies, a wide range of water depths, various reservoir geologies and field locations that cover the entire GoM. The information is intended to assist operators validate cycle times when planning a development, especially the Execute stage.\u0000 In addition, the paper addresses emerging trends in deepwater GoM field developments following the oil price collapse in 2014 and 2020.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"81 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77382553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrated Approach to Multiphase Flow Regime Prediction Through Computational Fluid Dynamics CFD 基于计算流体力学CFD的多相流流型综合预测方法
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/31096-ms
M. Straw, R. Aglave, Rodolfo Piccioli
{"title":"Integrated Approach to Multiphase Flow Regime Prediction Through Computational Fluid Dynamics CFD","authors":"M. Straw, R. Aglave, Rodolfo Piccioli","doi":"10.4043/31096-ms","DOIUrl":"https://doi.org/10.4043/31096-ms","url":null,"abstract":"\u0000 This paper presents recent advances in multiphase modelling methods in Computational Fluid Dynamics (CFD). It uses case studies to show how integration of advanced multiphase modelling approaches can improve the fidelity and realism of simulation of separation and process systems; helping improve design and performance.\u0000 CFD has been widely used to aid the design and operational performance of many separation and multiphase production and process systems; often providing significant insight and performance improvement.\u0000 Traditionally, numerous compromises or simplifications must be made when simulating complex multiphase flows and their transitions within production and separation systems using CFD. For example, the modelling methods applicable to capture gas-liquid or liquid-liquid interface behaviour are not suitable (or practical) to also capture gas columns, liquid films or liquid entrainment phenomena, that may be important to quantifying overall system performance. To accommodate different multiphase phenomena and flow regimes, multiple CFD simulations or approaches have often been required. This can limit the insight or fidelity of a given simulation or, in some cases, mean overall performance cannot be fully quantified (even though useful performance indicators may still be identified).\u0000 Here, the authors present advances in hybrid multiphase modelling and how integration of multiphase modelling approaches enables multiple multiphase flow regimes and their transition to be captured through CFD simulation. The paper will demonstrate how these advances enables simulation of more complex behaviours with increased fidelity.\u0000 Examples, case studies and validation cases are presented demonstrating phenomena including bulk liquid interface break-up, liquid film formation and entrainment of droplets plus their break—up and deposition. The examples will be presented in the context of the improvements possible in simulation fidelity and realism, of multiphase systems, and how this can impact the insight and value gained from CFD simulation in this complex field.\u0000 The work presented shows how new developments and evolution of CFD-based predictions can advance how the industry uses this approach and the value that can be obtained.\u0000 It highlights how integration of the most advanced modelling approaches and methods is key to the next stage of application of CFD to enable better representation of the full range of fluid mechanics that are critical to many separation and multiphase system designs and performance.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74390948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Auger TLP: Calibration of Minimum Bottom Tendon Tension Based On Field Measurements 螺旋张力腿架:基于现场测量的最小底部肌腱张力校准
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/30959-ms
Jinbo Chen, Yong Chen, Justin P. Barras, Varadarajan Nadathur, Z. Tang, E. Huang
{"title":"The Auger TLP: Calibration of Minimum Bottom Tendon Tension Based On Field Measurements","authors":"Jinbo Chen, Yong Chen, Justin P. Barras, Varadarajan Nadathur, Z. Tang, E. Huang","doi":"10.4043/30959-ms","DOIUrl":"https://doi.org/10.4043/30959-ms","url":null,"abstract":"\u0000 The Auger Tension Leg Platform (TLP), which was installed in 1994, is Shell’s first TLP in the Gulf of Mexico (GoM). The Auger TLP was designed during the time when the industry had not yet been able to fully investigate the global dynamic characteristics of TLPs, especially the high frequency dynamic responses of tendons, and the design tensions of the Auger tendons were not calibrated to scaled wave basin model tests like the later TLP projects since the Auger TLP. Based on the accumulated experience from more than two decades’ operation and a number of studies conducted on the Auger TLP global performance, it is revealed that the Auger tendon tension is conservative given the current operational limit; however, the extra conservatism has not been fully quantified due to the lack of model test data. With the recorded Auger global motions and tendon tensions from the on-board measurement system, the performance of the Auger TLP in extreme storms is becoming fully unveiled by calibrating the analytical predictions (both time-domain analysis and frequency-domain analysis) with the measurement data. Thus, the objectives of this paper are (i) to calibrate the TLP minimum tendon tension design recipe based on the high-fidelity field measurement data from Tropical Storm Cindy 2017 and Hurricane Laura 2020 using both time-domain and frequency-domain simulations, and (ii) to propose the new allowable vertical center of gravity (VCG) and the new tendon pretensions for the Auger TLP for the extreme storm conditions. It is concluded that the current allowable VCG can be increased or the current required tendon pretension can be decreased without compromising the safety to the platform during the extreme storm conditions.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81308119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Near-Wellbore Hydraulic Fracture Non-Planar Propagation and Torturous Morphology in Tight Sandstone Formation 致密砂岩地层近井水力裂缝非平面扩展与弯曲形态
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/31313-ms
Ruxin Zhang, Q. Shan, Wan Cheng
{"title":"Near-Wellbore Hydraulic Fracture Non-Planar Propagation and Torturous Morphology in Tight Sandstone Formation","authors":"Ruxin Zhang, Q. Shan, Wan Cheng","doi":"10.4043/31313-ms","DOIUrl":"https://doi.org/10.4043/31313-ms","url":null,"abstract":"\u0000 In this paper, a 3D near-wellbore fracture propagation model is established, integrating five parts: formation stress balance, drilling, casing and cementing, perforating, and fracturing, in order to investigate fracture initiation characteristics, near-wellbore fracture non-planar propagation behavior, and torturous hydraulic fracture morphology for cased and perforated horizontal wellbores in tight sandstone formation.\u0000 The method is based on the combination of finite element method and post-failure damage mechanism. Finite element method is used to determine the coupling behavior between the pore fluid seepage and rock stress distribution. Post-failure damage mechanism is adopted to test the evolution of hydraulic fractures through simulating rock damage process. Moreover, a user subroutine is introduced to establish the relation between rock strength, permeability, and damage, in order to solve the model. This model could simulate the interaction between fractures during their propagation process because of the stress shadow.\u0000 The simulation results indicate that each operation could cause redistribution and reorientation of near-wellbore stress. Therefore, it is important to know the real near-wellbore stress distribution that affects near-wellbore fracture initiation and propagation. Initially, hydraulic fractures initiate independently from each perforation and propagate along the direction of maximum horizontal stress. However, hydraulic fractures divert from original direction gradually to interconnect and overlap with each other, because of stress shadow, resulting in non-planar propagation behavior. Individual fractures coalesce into a spiral-shaped fracture morphology. In addition, a longitudinal fracture could be observed because of wellbore effect, which is a result of weak cementing strength or near-wellbore weak plane. Finally, the complex and torturous fracture morphologies are created near the wellbore, incorporating Multi-spiral shaped fracture and horizontal-vertical crossing shaped fracture. However, the propagation behavior of fracture far away from wellbore is controlled by in-situ stress, forming a planar fracture.\u0000 The highlights of this 3D near-wellbore fracture propagation model are following: 1) it considers near-wellbore stress change caused by each construction to ensure the accuracy of near-wellbore stress distribution; 2) it achieves 3D simulation of fracture initiation and near-wellbore propagation from perforations; 3) the interaction between fractures is involved, resulting in complex and torturous morphology. This model provides the theoretical basis for fracture initiation and propagation, which also could be applied into heterogenous formations considering the effect of discontinuities.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83963902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advancing Effective Response Technology to Manage Containment of High Pressure, High Temperature Well 推进高压高温油井安全壳有效响应技术
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/31125-ms
Matthew James Goldsmith
{"title":"Advancing Effective Response Technology to Manage Containment of High Pressure, High Temperature Well","authors":"Matthew James Goldsmith","doi":"10.4043/31125-ms","DOIUrl":"https://doi.org/10.4043/31125-ms","url":null,"abstract":"\u0000 Deepwater well containment capabilities were born out of necessity – over the last 10 years the industry has innovated and improved upon capabilities and is currently focused on developing the systems required for, new high pressure, high temperature (HPHT) wells scheduled to be drilled in the 2021 timeframe.\u0000 As industry plans for drilling at deeper depths and higher temperatures – an organization's ability to keep pace with ever-changing needs is critical. That means continuing to enhance capabilities and technology to ensure well containment resources for the deepwater U.S. Gulf of Mexico are available.\u0000 MWCC is the first in industry to add High Pressure (20k psi) and High Temperature (400°F) technology to its portfolio. The development of this advanced technology presented many challenges both technical and non-technical. A shift from ram-based capping stack designs for well pressures up to 15K psi and temperatures up to 350F to valve-based designs rated for up to 20K and 400°F was necessary but presented technical challenges.\u0000 An extended flowback response to a HPHT well may requires additional supportive equipment to assure successful containment of well fluids. MWCC delivered novel technology in 2020 designed to cool well temperatures in order to continue use of conventional subsea architecture and systems.\u0000 Regulatory approval for HPHT source control technology is different from conventional technology. The approval of standard containment technologies is straightforward and well understood in industry; HPHT technology requires additional verification and approval. MWCC will address the process of obtaining approval for the use of HPHT containment equipment in an incident response.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89629189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Machine Learning Workflow to Predict Anomalous Sanding Events in Deepwater Wells 预测深水井异常出砂的机器学习工作流程
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/31234-ms
Mustafa Can Kara, Malina Majeran, Bret Peterson, Tom Wimberly, G. Sinclair
{"title":"A Machine Learning Workflow to Predict Anomalous Sanding Events in Deepwater Wells","authors":"Mustafa Can Kara, Malina Majeran, Bret Peterson, Tom Wimberly, G. Sinclair","doi":"10.4043/31234-ms","DOIUrl":"https://doi.org/10.4043/31234-ms","url":null,"abstract":"\u0000 Deepwater wells possess a high risk of sand escaping the reservoir into the production systems. Sand production is a common operational issue which results in potential equipment damage and hence product contamination. Excessive sand erosion causes blockage in tubulars and cavities in downhole equipment (subsea valves, chokes, bends etc.), resulting in maintenance costs for subsea equipment that adds up to millions of dollars yearly to operators.\u0000 In this work, a scalable Machine Learning (ML) model readily accessing historical and real-time feed of sensor and simulation data is built to develop a predictive solution. Deployed workflow can inform Control Room Operators before significant damage occurs. An anomaly detection architecture, a common unsupervised learning framework for maintenance analytics, 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 after batch training and passed along with anomaly error scores in real-time. An alarm is triggered once the real-time anomaly score passes the threshold calculated during batch training. ML outputs are streamlined in near real-time to the database.\u0000 In this study, deployed ML model performance is benchmarked against a GOM Deepwater well where sanding is known to occur often. The ML Model architecture can process data that is captured by OSI PI historian, predict anomalous sanding events in advance, and is shown to be scalable to other wells in GOM. It is noted from this study that streamlined ML architecture and outputs simplify exploratory data analysis and model deployment across Onshore and Offshore Business Units. In addition, sanding stakeholders are notified in advance and can take early mitigative action before significant damage to wellhead or downhole equipment occurs instead of reacting to a possible sanding event offshore. The novelty of the utilized ML algorithm and process is in the ability to predict sanding anomalies in advance through ML batch training, infer prediction values near real-time, and scale to other assets.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87934369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extreme Coastal Inundation Under Different Climate Scenarios: Fourchon Junction Case Study 不同气候情景下的极端沿海淹没:富尔川枢纽案例研究
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/30940-ms
Octavio E. Sequeiros, S. Jaramillo
{"title":"Extreme Coastal Inundation Under Different Climate Scenarios: Fourchon Junction Case Study","authors":"Octavio E. Sequeiros, S. Jaramillo","doi":"10.4043/30940-ms","DOIUrl":"https://doi.org/10.4043/30940-ms","url":null,"abstract":"\u0000 Port Fourchon Junction is located within Chevron's Fourchon Terminal, just south of Port Fourchon and is operated by Shell Pipeline Company LP. This manifold metering station is a critical junction for the Mars Corridor oil, as oil production from Mars (MC-807), Ursa (MC-809), Titan (MC-941), Who Dat (MC-547), Medusa (MC-582), and Olympus (MC-807B) flows through this station via a 24\" pipeline.\u0000 Port Fourchon is at the edge of the Mississippi delta facing the sea, one of the world's most vulnerable low-elevation coastal zones. It is highly exposed to storm surge and wave-induced inundation under hurricanes which regularly visit the Gulf of Mexico. In addition, it experiences one of the largest rates of subsidence in the world, which combined with sea level rise, will increase the site vulnerability in the coming decades.\u0000 This study assesses present and future scenarios of subsidence and sea level rise under extreme metocean conditions induced by hurricanes and their impact on Port Fourchon Junction. Local effects such as the differential settlement of the barrier beach have been also considered.\u0000 Using results from the numerical model XBeach, a set of different present and future scenarios are modelled under extreme metocean conditions. These conditions and the subsequent design parameters calculated, are not obtained through traditional extreme value analysis methods, instead, they are estimated through the influence of boundary conditions forced with the corresponding return period values of the parameters. Boundary conditions for the simulations are extracted from Grand Isle and Port Fourchon sea level observations, and from FEMA and the Water Institute of the Gulf simulations.\u0000 Port Fourchon site should be subject to flooding for 10-year return period conditions based on Grand Isle observations. For 5-6 years return period conditions some degree of milder partial flood should also be expected. This is well captured by the model.\u0000 While the highest inundating level is mostly dependent on winds, waves and surge acting together, surge is the single most critical parameter that defines the asset's base inundation level. Design future conditions based on surge extreme from FEMA simulations are recommended over surge extremes derived from Grand Isle observations. The barrier beach and the breakwaters play a key factor in sheltering site from waves and surge. Even when submerged under extreme high return period conditions they dissipate the waves ensuring that the maximum water level (wave crest elevation) on site is lower than would otherwise be without them. It is then important to maintain them fit for purpose during the entire lifespan of the asset. Both Grand Isle and Port Fourchon subsidence scenarios yield similar results.\u0000 Based on the importance of Port Fourchon Junction facilities, the design criteria obtained, and the higher subsidence level observed at Port Fourchon (compared to Grand Isle), it is recommended that a 1000-year return p","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87965254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent Developments in The Use of Hip for The Offshore Industry Hip在海上工业中应用的最新进展
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/31252-ms
James Shipley, C. Beamer, Johannes Gårdstam
{"title":"Recent Developments in The Use of Hip for The Offshore Industry","authors":"James Shipley, C. Beamer, Johannes Gårdstam","doi":"10.4043/31252-ms","DOIUrl":"https://doi.org/10.4043/31252-ms","url":null,"abstract":"\u0000 The use of additive manufacturing (AM) technology is growing rapidly for offshore use, whilst established production technologies such as powder metallurgy near-net-shape (PM-NNS) continue to be used. New standards are being introduced and many of the oil and gas majors are now developing supply chains to ensure rapid supply of high-quality complex parts. Environmental concerns are helping to drive this with use of near-net-shape technologies to reduce carbon dioxide emissions through more efficient designs and metal forming methods.\u0000 Hot isostatic pressing (HIP) has been used to remove shrinkage porosity and internal defects in cast products for many years, predominantly to improve mechanical properties and fatigue resistance. Recently, there has been an increasing focus on AM processes for demanding applications where localized corrosion and similar internal defects and porosity are a concern. HIP technology is being used to either produce PM-NNS parts, or for the post processing of AM produced components to ensure defect free material prior to service in demanding environments. This paper will present a broad overview in the use of HIP equipment to produce parts and components to the offshore industry.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88005796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of Control Line Encapsulation Based on Numerical Simulations of Shock and Vibration 基于冲击与振动数值模拟的控制线封装优化
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/31222-ms
L. B. Nardi, Daniel Fraga Sias, Leonardo Teixeira Fernandes Abreu, Mariana da Silva Guimaraes, Manoel Feliciano Silva, Thiago Handerson Torres Eduardo
{"title":"Optimization of Control Line Encapsulation Based on Numerical Simulations of Shock and Vibration","authors":"L. B. Nardi, Daniel Fraga Sias, Leonardo Teixeira Fernandes Abreu, Mariana da Silva Guimaraes, Manoel Feliciano Silva, Thiago Handerson Torres Eduardo","doi":"10.4043/31222-ms","DOIUrl":"https://doi.org/10.4043/31222-ms","url":null,"abstract":"\u0000 Control line integrity is fundamental to ensure operability of intelligent completion systems. Damage to control lines can normally occur during string deployment (by shock), or during productive life (by vibration-related fatigue). This work aimed to investigate how encapsulation will affect control line survivability throughout their entire life cycle.\u0000 Numerical simulations were carried out using geometrical arrangements of control lines typically found in completion valves and tubings. For installation loads, lines were submitted to shock simulations, both inside and outside of protection clamps. The role of flatpack material was studied, as to which kind of material would better absorb impact energy. For productive life loads, the flow-induced vibration was taken into account for high-rate injector wells. Vibration loads were based on force results obtained by Computational Fluid Dynamics (CFD). Structural Finite Element Analysis (FEA) was performed to obtain local tensions to estimate productive life of lines.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82689433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Repurposing of Offshore Oil and Gas Cables for Renewable Generation: Feasibility and Conceptual Qualification 海上油气电缆用于可再生能源发电的再利用:可行性和概念资格
Day 3 Wed, August 18, 2021 Pub Date : 2021-08-09 DOI: 10.4043/30933-ms
R. Mahmoud, Hazem Fayad, P. Dodds
{"title":"Repurposing of Offshore Oil and Gas Cables for Renewable Generation: Feasibility and Conceptual Qualification","authors":"R. Mahmoud, Hazem Fayad, P. Dodds","doi":"10.4043/30933-ms","DOIUrl":"https://doi.org/10.4043/30933-ms","url":null,"abstract":"\u0000 Wind farms are expected to be deployed in the North Sea in increasing numbers and at ever greater distances from land, over the coming decades. Many nearby oil and gas fields have reached or are near the end of their lifespans, and their operators are eager to explore innovative ways to reduce decommissioning costs. One possibility would be to repurpose some of their infrastructures for use by wind farms, which would both delay decommissioning and reduce the wind farm capital costs. This paper investigates the potential for repurposing existing submarine power cores in decommissioned oil and gas fields as transmission cables for offshore renewables.\u0000 Offshore power cables generally have longer lifetimes than are needed to deplete hydrocarbon reservoirs. Cable transmission capacity could be too low to provide the main connection to wind farms, but there is scope to increase capacity or use cables as auxiliary connections. A qualification methodology is proposed to assess whether existing cables might be usefully repurposed. Repurposing cables has an impact on renewable project capital expenditure (CAPEX) and levelised cost of energy (LCOE), it also positively affects decommissioning cost and the environment. The qualification methodology provides a cost-effective initial appraisal prior to field testing.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82459171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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