ASME-ARPEL 2021 International Pipeline Geotechnical Conference最新文献

{"title":"Risk Areas Zoning Using a New 3D Seismic Refraction Technique in the Gas Pipeline Right-of Way of a Gas and Condensed Field in the Peruvian Jungle","authors":"Nereyda Luque, Oscar León, Milagritos Arriola, C. Mariscal, Greydy Estofanero","doi":"10.1115/ipg2021-65004","DOIUrl":"https://doi.org/10.1115/ipg2021-65004","url":null,"abstract":"\u0000 The use of the new three-dimensional refraction technique was applied around the right-of-way (DDV) of the hydrocarbon gathering pipeline system (U-200), approximately 14.4 km long and 1.5 km wide. This technique included: a) processing of field seismic gathers data in conjunction with LIDAR-DTM topographic information, with which a 3D model of P-wave velocities was constructed; b) calibration of the P-velocity model with field data; and c) interpretation of the final P-velocity model.\u0000 The application of the new technique allowed the three-dimensional study of the subsurface around the U-200 by including the geological characterization of the velocities and the elaboration of several predictive geological maps (lithology, structural, topography, etc.). Correlations of these maps allowed the building of risk factor maps, in which areas with higher or lower geodynamic risk can be directly identified. These areas represented the zones where the pipeline/flowline was most prone to collapse.","PeriodicalId":138244,"journal":{"name":"ASME-ARPEL 2021 International Pipeline Geotechnical Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123884749","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}

{"title":"EPGEO-ARPEL Latin America Project: Technical Guides on Monitoring and Geohazard Control Works in Pipelines","authors":"F. Oliveros, Leandro Ivorra, J. Aristizabal","doi":"10.1115/ipg2021-65014","DOIUrl":"https://doi.org/10.1115/ipg2021-65014","url":null,"abstract":"\u0000 Since 2004, the Geotechnical Professional Team (EPGEO) from the Regional Association of Oil and Gas Companies in Latin America and the Caribbean (Asociación Regional de Empresas de Petróleo y Gas Natural en Latinoamérica y el Caribe, ARPEL) has been working on a knowledge management-related project for the Oil & Gas industry, consisting in the creation of three technical guides on Pipeline Integrity Management given the occurrence of geohazards in Hydrocarbon Transportation Systems.\u0000 This initiative comprises the creation of 3 guides related to:\u0000 i) Guide 1: Monitoring Geohazards for Pipeline Integrity,\u0000 ii) Guide 2: Geotechnical Mitigation Works in Pipelines,\u0000 iii) Guide 3: Geotechnical Risk in Pipelines.\u0000 The EPGEO published Guide 1 in 2016 and made a presentation at the 2017 IPG (IPG2017-2538), while Guide 2 will be completed by 2021. Guide 3 will be created in 2021–2023.\u0000 This document shows the methodology and contents for preparing the first two guides, focusing on Guide 2, which comprises different alternatives, analyses and technical solutions to the occurrence of geohazards that might affect the integrity of a pipeline transportation system.","PeriodicalId":138244,"journal":{"name":"ASME-ARPEL 2021 International Pipeline Geotechnical Conference","volume":"1120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122936269","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}

{"title":"Pipeline Geohazard Target Susceptibility Threshold – A Reliability-Based Rationalization","authors":"R. Read","doi":"10.1115/ipg2021-65935","DOIUrl":"https://doi.org/10.1115/ipg2021-65935","url":null,"abstract":"\u0000 Pipeline geohazard assessment involves the delineation and quantification of threat severity associated with a suite of geohazard mechanisms deemed credible for a specific setting or project. The context for a typical assessment is loss of containment from the pipeline — an ultimate limit state (ULS) — considering individual geohazard mechanisms (e.g., landslide, fault displacement, rockfall, subsidence, etc.). To estimate the probability of loss of containment associated with a particular geohazard mechanism at a given location, the evaluation process can be partitioned into an estimate of the probability of occurrence of the geohazard mechanism at that location, and the conditional probability of loss of pipe integrity should the event occur. The product of these two probabilities is termed “susceptibility” expressed as loss of containment events per year at a given location. A typical approach to manage geohazards assessed in this way is to set a target susceptibility threshold to determine mitigation requirements to reduce the estimated susceptibility value for individual geohazards. The rationale for selecting a target susceptibility threshold value has been a topic of interest in recent pipeline projects in Canada. This paper demonstrates a reliability-based approach in rationalizing the selected pipeline geohazard target susceptibility threshold and linking geohazard assessment results to Quantitative Risk Assessment (QRA) of all threat categories in ASME B31-8S.","PeriodicalId":138244,"journal":{"name":"ASME-ARPEL 2021 International Pipeline Geotechnical Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128722158","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}

{"title":"Real Time Rainfall Monitoring for Pipeline Geohazards","authors":"G. Ferris, P. Grover, Aron Zahradka","doi":"10.1115/ipg2021-63162","DOIUrl":"https://doi.org/10.1115/ipg2021-63162","url":null,"abstract":"\u0000 Oil and gas pipelines are subjected to multiple types of geohazards which cause pipeline failures (loss of containment); two of the most common types occur at watercourse crossings and at landslides.\u0000 At watercourse crossings, the most common geohazard which causes pipeline failures is flooding during which excessive scour may result in the exposure of the buried pipeline and if the exposure results in a free spanning pipeline, then this may fail due to fatigue caused by cyclic loading from vortex-induced vibration. Fortunately the free span length and water velocity combinations that lead to failure can be defined and can be used to identify the flood discharge that should be monitored for in order to trigger actions to manage the hazard and avoid failure. Most watercourse crossings in a pipeline network are on ungauged watercourses and necessitate the use of a proxy gauged watercourse. The “proxy” gauged watercourse is used to infer whether flooding is occurring on the ungauged crossing, and the owner can take appropriate actions. Often the proxy gauged watercourse is too far away or the watercourse may not be representative of the crossing of concern (e.g. large difference in the drainage areas). Real-time rainfall data can be used in conjunction with streamflow monitoring to determine when extreme precipitation has occurred within the ungauged watercourses catchment which may result in flooding.\u0000 Where pipelines cross landslide prone areas, large scale movements can be initiated, or slow on-going movement rates increased when extreme rainfall occurs. The definition of the extreme rainfall event for slope sites is the key component of providing a suitable warning of potentially dangerous conditions; shallow slides can be caused by short term events from sub-hourly to 3 day duration precipitation events whereas large deep seated (creeping) landslides can be driven by annual and intra-annual rainfall amounts. Monitoring of real time rainfall can be used to determine when extreme rainfall occurs at a landslide site.\u0000 The density of in-situ weather stations collecting real-time rainfall data prevents the application along remote sections of pipeline routes and within large sections of Canada. Gridded real time rainfall from quantitative precipitation estimations which integrate a multiple data sources including in-situ, numerical weather prediction, satellite and weather radar, can be used to overcome this problem and provide warnings when pre-determined rainfall thresholds are exceeded on a site-specific basis.","PeriodicalId":138244,"journal":{"name":"ASME-ARPEL 2021 International Pipeline Geotechnical Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121636574","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}

{"title":"Geo-Hydrodynamic Risk Management: Villano-Baeza Pipeline System","authors":"Fabián Vásconez, Alberto Velasteguí, Jaime Núñez, Patricio Torres, P. Riofrío, H. Ponce, Raul Bermeo, Jorge Quishpe","doi":"10.1115/ipg2021-64909","DOIUrl":"https://doi.org/10.1115/ipg2021-64909","url":null,"abstract":"\u0000 The main areas susceptible to the occurrence of landslides, which imply a threat against the pipeline system, are identified, mapped and classified according to their degree of danger, for which the kinematics of each landslide is considered its intensity and probability of occurrence.\u0000 In a second phase, detailed geological, geotechnical and geophysical investigations of the main landslides, both active and potential, are carried out.\u0000 A monitoring program of the unstable slopes through inclinometers, piezometers, strain-gauges, crack meters is carried out in order to determine the degree of activity of the landslides. Among the monitoring techniques, PCM (Pipeline Current Mapper) has been incorporated.\u0000 Additionally, a record and analysis of trigger factors such as rainfall and seismic activity is carried out.\u0000 As an additional control system, periodic review of multi-temporal satellite images has been incorporated, which provides a macro vision of the evolution of geodynamic, hydrodynamic and anthropic processes that could affect the integrity of the pipeline any time.\u0000 Of importance for management is the work of preventive maintenance of the Right of Way, trying to identify and manage the geodynamic processes in a timely manner, before they become uncontrollable.\u0000 As a result, we have an Oil Pipeline System that has not suffered any rupture, and without consequently oil spills, in more than 21 years of operation.","PeriodicalId":138244,"journal":{"name":"ASME-ARPEL 2021 International Pipeline Geotechnical Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126776388","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}