Day 3 Wed, August 18, 2021最新文献

{"title":"Recent Progress in Applying Advanced Computation Methods to Radar-Based Wave Measurements","authors":"M. Vinther, Torbjørn Eide, Aurelia Paraschiv, D. Bonvik-Stone","doi":"10.4043/31049-ms","DOIUrl":"https://doi.org/10.4043/31049-ms","url":null,"abstract":"\u0000 High quality environmental data are critical for any offshore activity relying on data insights to form appropriate planning and risk mitigation routines under challenging weather conditions. Such data are the most significant driver of future footprint reduction in offshore industries, in terms of costs savings, as well as operational safety and efficiency, enabled through ease of data access for all relevant stakeholders.\u0000 This paper describes recent advancements in methods used by a dual-footprint Pulse-Doppler radar to provide accurate and reliable ocean wave height measurements. Achieved improvements during low wind weather conditions are presented and compared to data collected from other sources such as buoys and acoustic doppler wave and current profiler (ADCP) or legacy.\u0000 The study is based on comparisons of recently developed algorithms applied to different data sets recorded at various sites, mostly covering calm weather conditions.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"150 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77396727","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":"Subsea Tree Fatigue Mitigation Solutions For Shallow Water Drilling","authors":"M. Sonawane, M. Ge, Steven Johnson, M. Campbell","doi":"10.4043/31282-ms","DOIUrl":"https://doi.org/10.4043/31282-ms","url":null,"abstract":"\u0000 The offshore drilling industry is advancing technologies to extend deep water drilling technologies and attain feasibility of operations at deeper depths and higher pressures. However, shallow water operations themselves pose a certain unique set of challenges that need to be addressed with customized and innovative solutions. While shallow water poses certain benefits and conveniences to the operations, like ease of retrieval and better access to wells, there are significant challenges in terms of operational down time caused by limited operability and poor drilling riser and subsea hardware fatigue performance.\u0000 Shallow water operations do not have the advantage of deep water drilling where the motions and loads imparted to the subsea blowout preventer (BOP) are relatively decoupled and damped out by hydrodynamic damping from the significant length of the water column. Thus, the vessel motions and wave hydrodynamic loads imparted on the riser are transferred to the wellhead and subsea hardware. In this paper the fatigue challenges encountered for drilling wells in 530 ft water depth from a sixth generation moored semi-submersible rig are explored. The fatigue loading is critical for the subsea tree connector which is characterized by a high stress amplification factor (SAF). Multiple riser space-out solutions were evaluated including fairings, helically-grooved buoyancy, joints with rope, and modifications to the telescopic joint each of which will be presented in the paper along with combination of different damping parameters to optimize the fatigue performance.\u0000 The paper will present the subsea tree connector fatigue performance for different riser space-out options and make recommendations for future operations with similar conditions. Other challenges encountered in fatigue evaluation will be discussed. This will highlight the current assumptions and unknowns in data that can form the subject of evaluation for a future joint industry study.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73164766","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":"The Use of Offshore Wind to Reduce Greenhouse Gas Emissions in Offshore Hydrocarbon Production - A Case Study","authors":"D. McLaurin, M. Paulin, Cheng-shuang Peng, Rama Yadlapati","doi":"10.4043/30993-ms","DOIUrl":"https://doi.org/10.4043/30993-ms","url":null,"abstract":"\u0000 The move to reduce greenhouse gas emissions in the offshore hydrocarbons production industry has resulted in a growing interest in the possibility of using offshore wind to reduce on-platform power generation. However, the integration of floating wind power into a brownfield development project offshore has not yet been undertaken nor has any operating greenfield projects incorporated floating wind electrification into their design. A number of smaller pilot projects exist in the floating offshore wind area consisting of single prototype floating towers to demonstrate a design concept, but these are providing power back to shore. Where electrification of offshore facilities has taken place, they have utilized shore-based power. In this paper, the authors present a case study of electrifying brownfield and greenfield oil and gas production facilities via offshore wind farms and the technical challenges associated with this transformation.\u0000 Intecsea has recently completed a generic investigation into the electrification of floating offshore oil and gas host facilities offshore Newfoundland, Canada using floating wind power. Electrification of floating host facilities eliminates or reduces the requirement for local power generation via turbine generators at the host facility, decreasing operational expenditure and total emissions from the facility. This work has included the investigation of existing offshore wind projects, equipment requirements and technical readiness, floating wind array best practices, greenhouse gas emissions reduction and required capital expenditure (capex).\u0000 In this paper, the authors present a case study of electrifying floating brownfield and greenfield oil and gas production facilities using offshore wind farms and the technical challenges associated with this transformation.\u0000 Challenges identified for the electrification of floating offshore facilities include:\u0000 challenges associated with dynamic cabling at different water depths determination of best cable configuration and array layout determination of the best suited support structure (floating foundation) sizing of generator (can have a significant effect on the tower's performance) best anchoring solutions; optimization of power tie-in and storage insufficient real estate or weight capacity (for brownfield applications).\u0000 The authors provide details on wind farm requirements and tie-in for electrification of offshore production facilities for different scenarios. A summary of modifications/additions required at a brownfield host facility for power supply by wind power array are presented. Related to floating production facilities, an investigation of ongoing project work related to dynamic, disconnectable cables which will operate in the upper end of MVAC, HVAC or HVDC range has been carried out and is presented. For cases selected, avoided GHG emissions and associated capex are estimated and presented.\u0000 The use of offshore floating wind to supplement/replace on p","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75092860","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":"Hydrate Management Strategy for Subsea Development in Gulf of Mexico","authors":"Samaneh Soroush, Debbie Lu, T. Golczynski, C. White, Tony Spratt","doi":"10.4043/30998-ms","DOIUrl":"https://doi.org/10.4043/30998-ms","url":null,"abstract":"\u0000 Gas hydrate formation in natural gas systems and subsea infrastructure can block pipelines and instruments, restrict flow, and lead to safety and environmental hazards in production and/or transportation systems. These problems can lead to substantial economic and HSE risks. Therefore, understanding how, when and where hydrate formation occurs are important factors in developing the hydrate management strategies. This paper addresses the hydrate management strategy in one of the subsea developments in the Gulf of Mexico (GOM). The effects of salinity, water cut, and amount of methanol on hydrate formation and plugging risk were studied in this paper. The experimental results and modeling in advanced thermodynamics software showed that an increase in the concentration of methanol and salts in the autoclave cell leads to a shift of the equilibrium curves, reducing subcooling and hydrate volume fraction while increasing induction time. The results also show that for some under-inhibited systems, the volume fraction of the hydrate slurry is low enough to allow for safe transportation of fluids during various operational conditions.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74218807","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":"Introducing an Innovative Perfluoroelastomer Cross Linking Technology: Achieving Superior Chemical Resistance and Thermal Stability","authors":"Jimmy M. Alvarez, C. J. Bish, Andrés Rodríguez","doi":"10.4043/31229-ms","DOIUrl":"https://doi.org/10.4043/31229-ms","url":null,"abstract":"\u0000 \u0000 \u0000 Perfluoroelastomers are a class of synthetic elastomers that provide extraordinary resistance to oils, chemicals, and heat. The outstanding thermal stability and excellent corrosion resistance of these materials is dependent on the perfluorinated polymer chain, and the absence of unsaturation. However, the cross-link which is necessary to impart elastomeric properties must also share those stability traits. Unfortunately, designing a suitably inert cross-link is technically difficult to achieve and consequently it has not been possible to provide the ultimate in perfluoroelastomer properties. This paper is a review of the cross-linking chemistry of perfluoroelastomers and highlight a novel and patented cross-link which combines broad chemical resistance and superior thermal stability.\u0000 \u0000 \u0000 \u0000 Several perfluoroelastomers formulations were selected and tested using representative standardized test methods to quantify their performance. The testing included compression set resistance, swell in fluids, and compression stress relaxation. In addition to the testing, chemistry of the cross-link was explained and how it is related to the observed performance results. The novel cross-link, triazole, was identified as an improvement versus existing cross-links.\u0000 \u0000 \u0000 \u0000 The testing demonstrated that previously available perfluoroelastomer cross-link chemistries display compromises in overall performance. For example, it had not been possible to achieve high thermal stability combined with resistance to almost all fluids. Overall, the data generated showed that the newly developed triazole cross-link system broadens the performance envelope of perfluoroelastomers and helps to alleviate the compromises of the past.\u0000 \u0000 \u0000 \u0000 The newly discovered triazole cross-link with enhanced chemical and thermal stability enables broader use of perfluoroelastomers in extreme applications.\u0000","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90110558","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":"Monitoring and Calibration of Long Term Mooring System Design Assumptions Through Use of AIS and Weather Data","authors":"D. Lillestøl, O. Kårvand, Are Torstensen","doi":"10.4043/31079-ms","DOIUrl":"https://doi.org/10.4043/31079-ms","url":null,"abstract":"\u0000 This paper outlines an approach on how to improve the mooring integrity of existing long term mooring systems by using existing and commercially available data.\u0000 It will be demonstrated how the use of AIS and hindcast weather data can be used to increase understanding of mooring systems and to monitor and quantify gaps between \"as-designed\", \"as-installed\" and \"as-is\" of a long term mooring system.\u0000 Long term moored units have traditionally suffered from many early failures, caused by damages and errors introduced in the installation phase, and costly and unnecessary \"late in life\" failures. A fact rated high on the agenda of the underwriters. Numerous papers have been written on this topic, but it is only in recent years the industry have started to ensure that systems are inspected to a sufficient degree with respect to the physical condition, taking these learnings into account. However, the second important element, the calibration of the mooring analysis vs. actual vessel and mooring system behavior/performance, have not yet gotten the attention required.\u0000 Deviations from the intended design are introduced in the installation phase of a mooring system. In addition, the design assumptions will never be fully accurate. The gap between the design assumptions and the actual system will increase over time, and the industry today do not focus on mapping and quantifying the effect of this gap sufficiently. The described method explains how one can introduce a pro-active approach, without installing onboard equipment, but rather utilizing algorithms on existing data and design documentation.\u0000 This paper focuses on the use of AIS data in combination with historic weather/environmental data and seek to demonstrate how this low-cost method can provide useful information with respect to the mooring system.\u0000 To emphasize the mapped importance of such calibrations, the July 2021 Edition of the in-service DNV Class Rules, DNVGL-OS-0300, formally introduces requirements to calibration of design assumptions of long term mooring units through use of survey data, service history and actual mooring system behavior in order to ensure a unit's mooring system condition and performance is known in light of the original design assumptions.","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":"83142095","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":"Dropped Polyester Mooring Line Qualification for Reuse","authors":"Craig R Gage, P. Liagre, C. Heyl, C. D. Vecchio","doi":"10.4043/31052-ms","DOIUrl":"https://doi.org/10.4043/31052-ms","url":null,"abstract":"The Perdido platform is a spar located in a water depth of 7,825 feet in the Alaminos Canyon Block 857in the Gulf of Mexico. The mooring system consists of nine mooring lines in three groups of three, spacedapproximately 120 degrees apart between each group. Each mooring line is composed of a platform chain,a multi-segment polyester rope including a 120 feet long test insert at the top, a ground chain, a pile chainand other associated connectors. The mooring lines are connected to suction piles. The Minimum BreakStrength for the Perdido polyester mooring line is 4,000 kips. Installation of the spar hull was completed inSeptember 2008 and the topsides was set in March 2009. The spar and its mooring system were originallydesigned for a twenty (20) year life.\u0000 On May 4, 2019, mooring line # 6 (ML6) was contacted by a marine vessel down line and was severed.Contact occurred along the polyester test insert. A recovery effort was planned, and the mooring line wasreplaced in early June. The original ML6 was recovered from the seafloor on June 4, 2019 as a part of thatcampaign and submitted to an initial inspection.\u0000 This paper is not intended to go into either the cause of the incident or the replacement of ML6 but willlook to the inspection of the recovered mooring line and explore its suitability for reuse. Initial inspection ofthe lines suggested minimal damage to the polyester rope segments and raised questions to the impacts of 10years of use. Testing was envisioned as a learning opportunity for the impact of service on polyester mooringand was reinforced by the potential cost savings that could be attained though reuse. A methodology wasdeveloped, supported by initial inspections and a suite of testing was performed. The results of these testsare presented in the following, along with a proposed process for assessing and considering reuse of a linefollowing a drop. Additionally, conclusions will be shared for the process, the results, and the potentialramifications for the industry.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82111318","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":"Searay Autonomous Offshore Power System AOPS: Results of Sea Trials and Payload Support Demonstration","authors":"Arvid Reenstjerna Lesemann, E. Hammagren","doi":"10.4043/31042-ms","DOIUrl":"https://doi.org/10.4043/31042-ms","url":null,"abstract":"\u0000 As the offshore energy sector looks to fully implement resident, autonomous, robotic, digital systems offshore, one missing piece of the puzzle is remote power generation. Further complicating these efforts are the owner/operators’ move towards net zero operations. The combination represents a significant dilemma for the offshore energy industry: if gensets and topside vessels are not appropriate or practical power sources for future resident systems, how will these needed cost and carbon-saving innovations come to market and get deployed in the field?\u0000 \u0000 \u0000 The proposed paper will provide an overview of a new platform solution, an autonomous offshore power system (AOPS), that looks to complete the puzzle. A number of AOPS’ are under development world-wide. The paper will review the state-of-the-art, including the SeaRAY AOPS, which will undergo sea trials off the coast of Marine Corp Base Hawaii, on Oahu, Hawaii, USA. The sea trials are expected to last for six months.\u0000 Note: Because of COVID-related delays, the sea trials originally planned for late 2020 will now start in 2Q21. The August presentation at OTC will include the latest information available on the sea trials and co-deployed payload testing.\u0000 \u0000 \u0000 \u0000 The SeaRAY AOPS is the result of a project co-sponsored by the U.S. Department of Energy, U.S. Navy, and C·Power, to design, build, and test a novel AOPS technology. The SeaRAY AOPS provides kW-scale power generation, energy storage, and real-time data and communications capabilities for remote, offshore systems, including unmanned subsea and surface vehicles (e.g., AUVs, ROVs, USVs), sensor payloads (e.g., environmental monitoring or methane emissions) and operating equipment (e.g., emergency power for failed/failing umbilical, field modernization, or redundant power for BOP systems).\u0000 Satisfying the need for cleaner operations, the SeaRAY and other AOPS devices capture and convert ocean energy into electricity to charge the energy storage system. The payloads, in turn, receive their power from the intermediate energy storage system, allowing campaign-based or extended residency.\u0000 \u0000 \u0000 \u0000 The paper will review the initial results from the planning, permitting, deployment, operation, and maintenance of the SeaRAY AOPS and the co-deployed sensor and vehicle payloads, which include a seafloor acoustical environmental monitoring system and a hybrid AUV.\u0000 Novel/Additive Information: The market impact of AOPS’ for the offshore energy industry can be significant, as the class of systems is intended to enable reductions in operational costs, carbon emissions, and complexity, while enabling a fuller implementation of autonomous and semi-autonomous resident systems. The paper will outline these features and benefits for the offshore energy industry, along with the results to-date of the novel SeaRAY AOPS’ sea trials.\u0000","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82438800","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":"Three-Phase Flow Profile Determination of A Horizontal Well in Offshore by Tracer Technology","authors":"A. Katashov, Igor Novikov, E. Malyavko, Nadir Husein","doi":"10.4043/30991-ms","DOIUrl":"https://doi.org/10.4043/30991-ms","url":null,"abstract":"\u0000 Over the past few years, the oil and gas industry has faced a situation of high fluctuations in hydrocarbon prices on the world market. In addition, the trend for the depletion of traditional hydrocarbon reservoirs and the search for new effective solutions for the management and control of field development using horizontal and multilateral wells is still relevant.\u0000 The most common method for horizontal wells testing is production logging tools (PLT) on coiled tubing (CT) or downhole tractor, which is associated with HSE risks and high cost, especially on offshore platforms, which limits the widespread use of this technology. The solution without such risks is the method of marker well monitoring, which allows obtaining information about the profile and composition of the inflow in a dynamic mode in horizontal wells without well intervention.\u0000 There are several types of tracer (marker) carriers and today we will consider an approach to placing marker monitoring systems as part of a completion for three-phase oil, water and gas monitoring.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"1484 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77713937","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":"Intelligent Pipe, A New Monitoring Solution For Your Wells","authors":"Francois-Xavier Bulard, E. Tavernier, Antoine Deroubaix, Umberto Caruso","doi":"10.4043/31160-ms","DOIUrl":"https://doi.org/10.4043/31160-ms","url":null,"abstract":"\u0000 Well integrity to prevent catastrophic damage has always been a key focus of the Oil and Gas industry and Oil and Gas operators keep working to reinforce it.\u0000 Today, well integrity data available throughout the life of the well remains limited. Being able to know the wellbore parameters at different depths would help operators anticipate and identify problems throughout the life of their well. In addition, knowing the exact performances of each pipe will provide operators with the actual safety margin they have against well load cases, therefore allowing them to better monitor the well, based on real well data.\u0000 The integration of a pressure and temperature sensor element in tubulars is possible thanks to the use of MEMS (Microelectromechanical systems) technology. Low-power consumption combined with an adapted transmission technology opens the door to the use of this intelligent technology inside an O&G well. Embedded sensors allow operators to access previously inaccessible well areas in real time. The qualification of this technology is carried out in a way as to ensure the integrity of the system and its long-term viability.\u0000 This paper will present an innovative intelligent tube solution, from its qualification to its deployment. This solution will change the way wells are monitored. By combining the data retrieved by the sensors with the actual resistance of each pipe in the well, operators will be able to adjust their production parameters while ensuring the safety of their installation.\u0000 This approach is new and, leveraging the latest IoT technologies, opens a new era for easier and optimized data-based Oil and Gas well monitoring.","PeriodicalId":11184,"journal":{"name":"Day 3 Wed, August 18, 2021","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89612779","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}