Day 1 Mon, November 11, 2019最新文献

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Kick Isolation While Drilling - First Field Test of an Innovative Risk Mitigation Technology 边钻边隔涌——一项创新风险降低技术的首次现场测试
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197756-ms
A. Salomone, S. Burrafato, G. R. Maccarini, R. Poloni, C. Molaschi, Arve Huse, G. Tangen, Thorsten Regener, Oliver Backhaus, S. Grymalyuk
{"title":"Kick Isolation While Drilling - First Field Test of an Innovative Risk Mitigation Technology","authors":"A. Salomone, S. Burrafato, G. R. Maccarini, R. Poloni, C. Molaschi, Arve Huse, G. Tangen, Thorsten Regener, Oliver Backhaus, S. Grymalyuk","doi":"10.2118/197756-ms","DOIUrl":"https://doi.org/10.2118/197756-ms","url":null,"abstract":"\u0000 Uncertainty in predicting formation integrity as well as pressure regimes poses significant risks to drilling operations. Several technologies can predict downhole environments in terms of formation strength, kick detection etc., but no solution currently exists for kick isolation. This paper presents an innovative well control and risk mitigation technology that is deployed while drilling and the result of a field test offshore Italy.\u0000 The new system is integrated in the bottom hole assembly (BHA), and in case of a kick can shut-in the annulus and the drillstring on demand to confine the influx at the well bottom below the sealing elements. A bypass port that establishes communication with the drillstring and annulus can be opened above the sealing elements to allow adjusting of the mud weight. Downhole pressure above and below the annular seal and inside the string can be monitored in real time. The system is deployed in combination with Wired Drill Pipe to ensure activation and bi-directional communication that is independent of any fluid flow.\u0000 The system was run on top of the directional rotary steerable BHA while drilling an 8½-in. hole section. The field test was conducted after drilling more than 500 m of new formation and 90 hours in hole. Prior to the test, the system was pulled to surface for visual inspection. No irregularities were observed. The system was then run back in open hole, activated according to operating procedures and tested by applying pressure into the annulus. The well was monitored and no leakage was observed concluding a successful test. Finally, the bypass was opened, circulation was re-established, and the system was deactivated and then pulled out of hole.\u0000 This paper describes the technology features and summarizes the first field test results of a new risk mitigation technology for well control situations. This document also shows how deploying new solutions can help E&P operators improve well control through a cost-effective solution and reduce operational risk in case of formation fluid influx into a wellbore.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83804210","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: 2
Thermoelastic Fracturing on Water Injectors as Part of Injectivity Enhancement in Giant Offshore Carbonate Field. Case Study 注水井热弹性压裂提高海上大型碳酸盐岩油田注入能力案例研究
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197569-ms
Arlen Sarsekov
{"title":"Thermoelastic Fracturing on Water Injectors as Part of Injectivity Enhancement in Giant Offshore Carbonate Field. Case Study","authors":"Arlen Sarsekov","doi":"10.2118/197569-ms","DOIUrl":"https://doi.org/10.2118/197569-ms","url":null,"abstract":"\u0000 Water Injection is part of secondary recovery mechanism which aims to increase oil recovery by increasing or maintaining the reservoir pressure and provide additional pressure support.\u0000 Most of the time water injection is controlled under matrix injection below the fracture pressure in order to avoid the creation of fractures and risk of bypass oil. However, there are two different mechanisms of fracture creation in water injection: poroelastic fracturing and thermoelastic fracturing. First one will activate above fracture point, while the second one creates below the original fracture point and most of the time missed in reservoir field development\u0000 Normally fractures can be categorized in 3 groups: –Fractures induced due to increase of injection pressure above pore pressure. (Poroelastic fractures)–Fractures induced due to drilling activities (Overbalance drilling)–Fractures induced due to injection of cold water.\u0000 Fractures which are induced due to difference in temperature between injected fluid and rock fluid called thermoelastic fractures. Thermoelastic fracturing is controlled primarily by the difference in temperature between reservoir rocks and injected fluids. This paper will focus on thermoelastic fractures and its propogation along the formation.\u0000 The analysis performed in a giant offshore carbonate field in Middle East on a well level as well as field level through injection modules.\u0000 This paper will describe the mechanisms of thermoelastic fracturing and methodology to identify this type of fractures in water injectors through several cases studies.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90899566","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
Improvement in Rheological Features, Fluid Loss and Swelling Inhibition of Water-Based Drilling Mud by Using Surfactant-Modified Graphene 表面活性剂改性石墨烯改善水基钻井泥浆的流变性、失水性和抗膨胀性
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197774-ms
A. Rana, T. Saleh, Mohammad K. Arfaj
{"title":"Improvement in Rheological Features, Fluid Loss and Swelling Inhibition of Water-Based Drilling Mud by Using Surfactant-Modified Graphene","authors":"A. Rana, T. Saleh, Mohammad K. Arfaj","doi":"10.2118/197774-ms","DOIUrl":"https://doi.org/10.2118/197774-ms","url":null,"abstract":"\u0000 The improved rheological properties of the drilling fluid are very critical for the oil well drilling operation. The present work reports the effect of sodium dodecyl sulfate modified graphene (SDS-Gr) on the rheological features, fluid loss and swelling inhibition mechanism of clay. The rheology and filtration test of drilling mud were conducted after being hot rolled for 16 h at 150oF and under 500 Psi pressure. The inhibition characteristics were evaluated by the dispersion test and shale inhibition durability test, where SDS-Gr modified drilling mud shows the highest recovery as compared to KCl and traditional drilling mud. The inhibition mechanism was investigated by various kind of techniques such as thermogravimetric analysis, scanning electron microscopy, and energy dispersive X-Ray spectroscopy. The outcomes revealed that the addition of SDS-Gr to the traditional drilling mud clearly affect the rheological properties and make it more suitable for the drilling. Moreover, SDS-Gr additive reduces fluid loss by 20% as compared to the mud without SDS-Gr. The Fourier transform infrared spectroscopic study also confirms the adsorption of SDS-Gr on clay. SDS carries the negatively charged functional group that help SDS-Gr to binds to the cations present on the clay surface and graphene plug the pores in the clay. The intercalation and adsorption of SDS-Gr on to the surface of clay hinder water molecules from invading the clay that helps in mitigation of swelling due to hydration. We report for the first time the SDS modified graphene (SDS-Gr) that successfully binds to the clay surface. In order to combine the features of SDS and graphene, the graphene surface is factionalized with SDS that modify the drilling mud rheology, control fluid loss and inhibit the clay swelling.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76577619","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: 19
Temporary Plugging Mechanism of Degradable Diversion Agents within Reproduced Acid-Etched Fracture by Using 3D Printing Model 基于3D打印模型的可降解导流剂在再生酸蚀裂缝中的暂堵机理
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197132-ms
Lufeng Zhang, Fu-jian Zhou, Wei Feng, Jiaqi Cheng
{"title":"Temporary Plugging Mechanism of Degradable Diversion Agents within Reproduced Acid-Etched Fracture by Using 3D Printing Model","authors":"Lufeng Zhang, Fu-jian Zhou, Wei Feng, Jiaqi Cheng","doi":"10.2118/197132-ms","DOIUrl":"https://doi.org/10.2118/197132-ms","url":null,"abstract":"\u0000 As proved from both experimental tests and field applications, diversion agents can effectively plug the previously artificial fractures or natural fractures to create reorientation fractures, which can improve diversion efficiency and stimulated reservoir volume (SRV). However, the temporary plugging mechanism and its influencing factors were still unclear.\u0000 In light of this, a fracture temporary plugging evaluation system was proposed by this study, which holds large fracture scale, and high pressure-bearing capability. Hence, this setup can meet the requirements of plugging tests. Moreover, in order to enhance the experimental accuracy, the 3D printing technique was introduced, which can reproduce the real surface morphology of acid-etched fracture. Based on the newly designed setup, some experiments were performed to study the plugging rules of fibers and the combination of fibers and particulates. Furthermore, the inner plugging mechanisms of the different cases were also analyzed.\u0000 Experimental results show that the pure fibers and the combination of fibers and particulates both can achieve favorable plugging effect. In addition, the plugging processes of pure fibers can be summaried as follows: 1) The carrier fluid with fibers flow into the fracture model and a small amount of fibers remain in the fracture. 2) Fibers begin to adhere to the fracture surface with a small fracture width. 3) The previously attached fibers capture the subsequently injected fibers to bridge plugging. 4) The bridging plugging extend to the entrance and eventually form a tight plugging zone. Furthermore, when the diameter of particulates is less than the half of fracture width, the plugging mechanism is similar as that of pure fibers. When the diameter of particulates is larger than the half of fracture width, the plugging mechanism is completely different from that of pure fibers. The big particulates will firstly be bridging and plugging at the location with a small fracture width.\u0000 This study reveals the temporary plugging mechanism of diversion agents within acid-etched fracture, which provides an insight of optimizing temporary plugging fracturing design.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75424146","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: 3
Development of Novel Composition for Controlling Moderate to Severe Losses 控制中重度损失的新型成分的研制
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197917-ms
V. Wagle, R. Kalgaonkar, A. Alyami, Sara Alkhalaf
{"title":"Development of Novel Composition for Controlling Moderate to Severe Losses","authors":"V. Wagle, R. Kalgaonkar, A. Alyami, Sara Alkhalaf","doi":"10.2118/197917-ms","DOIUrl":"https://doi.org/10.2118/197917-ms","url":null,"abstract":"\u0000 The loss circulation composition comprising the nanosilica based dispersion and a chemical activator has been designed to treat moderate to severe losses. The nanomaterial used in this loss circulation composition is an environmentally friendly material and a chemical activator. The loss circulation composition is so designed so as to give delayed gelling of the nanoparticle based dispersion. A major advantage of this technology is its ability to place the loss circulation treatment composition in to the target loss circulation zone before the nanoparticle based dispersion gels up. Premature gelling of the nanoparticle based dispersion would avoid premature setting of the treatment fluid before it reaches the target zone. The newly developed system can be used effectively up to 300°F.\u0000 In this paper, experiments have been performed with three different types of nanoparticles differing in their surface charges and particle sizes. Two negatively charged nanoparticle-based dispersion with a particle size of 5nm and 17nm respectively and one positively charged nanoparticle with a particle size greater than 17nm have been evaluated as loss circulation materials. Two different types of chemical activators, one organic and the other inorganic have been used in this study and their effect on the gelling time has been evaluated. The gelling time experiments have been done at four different temperatures viz. 150°F, 200°F, 250°F and 300°F. The effect of activator concentration and different shear rates on the gelling time of the three nanoparticle-based dispersions has been studied. Permeability plugging tests have been performed on the three nanoparticle-based dispersions using 2mm slotted disks and their effectiveness in controlling moderate to severe losses has been evaluated\u0000 The loss circulation composition can be designed so as to control its gelling time by adjusting the activator concentration. The results show that a specific gelling time of the loss circulation composition can be obtained to achieve a predictable and controllable pumping time. This pumping time can range from a few minutes to several hours at over a wide range of temperatures. A predictable gelling time would allow the nanoparticle-based dispersion to remain pumpable for sufficient time before being placed in the loss circulation zone. The loss circulation composition which turns from a liquid to a gelled solid is then expected to seal off the loss circulation zone and thereby prevent fluid loss.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84927001","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
Successful Discoveries Using Novel DHI Technology Based on Seismic Resonance and Dispersion 基于地震共振和色散的新型DHI技术的成功发现
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197284-ms
Kristofer Skantze
{"title":"Successful Discoveries Using Novel DHI Technology Based on Seismic Resonance and Dispersion","authors":"Kristofer Skantze","doi":"10.2118/197284-ms","DOIUrl":"https://doi.org/10.2118/197284-ms","url":null,"abstract":"\u0000 A new technology that analyses dispersion events in seismic data is presented. The technology aims at identifying both reservoirs and also the likelihood of any presence of liquid hydrocarbons within them. This paper details the science on which the technology is based and empirical results from usage of the technology.\u0000 Presence of strong wave dispersion in seismic data has analytically and in tests been seen to correlate with high porosity and permeability formations. A lack of dispersion has conversely been seen to correlate with low porosity systems. Furthermore, a high viscosity fluid in a poro-elastic system has been seen to cause higher dispersion effects compared to brine. This permits derisking of reservoirs to identify locations with high chance of liquid hydrocarbon.\u0000 Resonance wave systems are abundant in sedimentary rock. The measurement of resonance waves permits the study of otherwise weak frequency shifts in seismic data, which can then be used to search for reservoir rock and liquid hydrocarbon.\u0000 Velocity dispersion and resonance wave analysis of seismic data requires carefully selected wavelet based spectral decomposition methods. Results from a commercially available technology presented in this paper have shown a need to prioritize high accuracy spectral decomposition methods that are able to identify minute dispersion events. These methods are often very computationally demanding. Therefore, those methods need to be selected that ensure highest accuracy while optimizing for speed.\u0000 A dispersive event occurs when an incoming P-wave propagates through a heterogeneous porous media due to mesoscopic flow. Dispersivity contributions may also stem from localized effects such as Krauklis waves. The level of dispersivity has in models and field tests been identified as a function of the reservoir porosity, permeability and fluid viscosity. Empirical results from the technology presented here, suggest the ability to identify reservoirs and frequently also their fluid content using dispersion analysis of seismic data.\u0000 Case study results using the commercial technology are presented over both discovery and dry wells in Norway and Oman. The results show how new insights into poro-elastic lithology can be provided and also the technology's potential to contribute to an improved overall prospect derisking and field delineation with respect to fluid content.\u0000 The technology demonstrates the ability to extract additional information from seismic data sets and thereby further the geological and geophysical subsurface interpretation and modelling.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81603098","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
In-situ Proppant: Beads, Microproppant, and Channelized-Proppant 原位支撑剂:珠状支撑剂、微支撑剂和通道支撑剂
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197638-ms
Jiangshui Huang, Wei Gong, Lijun Lin, C. Yin, Fu-Chen Liu, Han Zhou, Litao Bai, Lulu Song, Zhengzhou Yang
{"title":"In-situ Proppant: Beads, Microproppant, and Channelized-Proppant","authors":"Jiangshui Huang, Wei Gong, Lijun Lin, C. Yin, Fu-Chen Liu, Han Zhou, Litao Bai, Lulu Song, Zhengzhou Yang","doi":"10.2118/197638-ms","DOIUrl":"https://doi.org/10.2118/197638-ms","url":null,"abstract":"\u0000 Tight oil reservoirs need stimulation in order to produce the trapped oil. The most common form of stimulation used by the oil and gas industry is hydraulic fracturing. Fracturing operations tend to create fractures including primary fractures and microfractures. The objective of this study is to develop a fracturing fluid which can be converted into microproppant, beads, and channelized-proppant as desired in-situ during a fracturing operation to enhance the hydraulic conductivity of the microfractures and the primary fractures, and simplify the hydraulic fracturing operation, where the channelized-proppant is defined as the pillars surrounded by channels.\u0000 Resin, curing agents, surfactants, and aqueous phase were mixed together to form O/W emulsion to serve as fracturing fluid. After curing process, resin and curing agent would react and form proppant in-situ. The parameters affect the proppant formation such as the curing temperatures, pressure, mixing strength, surfactant concentration, and size control additives were all studied and thus through controlling the parameters, microproppant, beads, and channelized-proppant can form in-situ as desired. The particle size distribution, sphericity, roundness, conductivity, acid solubility, and crush strength were tested.\u0000 Through controlling the experimental parameters and adding size control additives, fracturing fluid can be converted into microproppant, beads, and channelized-proppant as desired at a temperature from 30° C to 90° C. Almost 100% of the resin and the curing agents were converted into proppant with a specific density of 1.09g/ml. For the beads, both the sphericity and roundness are over 0.9, less than 2% fines were generated after being loaded to 15 kpsi, the acid solubility is 2.37%, and the conductivity of the beads of 20/40 mesh tested with proppant loading of 1 lb/ft2 at 4000 psi at room temperature was 227 mD-ft. For the microproppant, both the sphericity and roundness are close to 1 with d50 about 80 µm. Furthermore, channelized-proppant was formed in an artificial fracture with walls made of glass sheets. Thus, with the fracturing fluid developed, the conductivity of the well can be maximally optimized through the in-situ formation of channelized proppant and microproppant to keep the primary fractures and microfractures open respectively.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79848260","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: 3
Ushering Operational Excellence Through Development and Operationalization of Closed Loop Action Tracking System 通过闭环行动跟踪系统的开发和运行引领卓越运营
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197392-ms
Amitava Choudhuri, M. S. Jainal, Mustafa B. Adenan, Vivege Rajah Thanerajah
{"title":"Ushering Operational Excellence Through Development and Operationalization of Closed Loop Action Tracking System","authors":"Amitava Choudhuri, M. S. Jainal, Mustafa B. Adenan, Vivege Rajah Thanerajah","doi":"10.2118/197392-ms","DOIUrl":"https://doi.org/10.2118/197392-ms","url":null,"abstract":"\u0000 At all Field Operation Centers of PETRONAS Carigali Sdn Bhd (PCSB), multiple meetings are conducted on a daily basis and also on a periodic basis, based on the laid down standardized meeting Terms of Reference (TOR). Many short and medium term actions, opportunities and risks are identified during these meetings. Further, through continuous real time surveillance and routine reviews as well as detailed analytic exercises, multiple actions leading to opportunities for production gain and better managing risks are identified. These actions are assigned to various discipline focals with an understanding that they would be completed within an expected time duration. As has been the practice, logging and registering of these actions are being made through different means, using documentation process that are not standardized, and which leads to difficulty in effectively following up on these actions until their closure.\u0000 To ensure that all such actions are tracked and effectively closed within the target date as well as to enable a readily accessible \"Lessons Learnt\" data bank, a centralized and standardized closed loop action tracking web-based system was deployed by Operational Excellence department in collaboration with all Assets.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83128150","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
Successful Float Over Installation by Portable DP Vessel 便携式DP船成功浮过安装
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197150-ms
A. A. Bakar
{"title":"Successful Float Over Installation by Portable DP Vessel","authors":"A. A. Bakar","doi":"10.2118/197150-ms","DOIUrl":"https://doi.org/10.2118/197150-ms","url":null,"abstract":"\u0000 Float over topside installation has become a cost effective alternative for offshore construction over the past 25-30 years, as ever-increasing integrated topside weight constantly exceeds the lifting capacity of installation vessel cranes.\u0000 The basic concept of float over installation is to transport the topside on a vessel in one piece, position the vessel over the substructure, and lower the topside onto the substructure while maintaining the position of the vessel.\u0000 While this basic principle of loadout and transportation remains the same, methods and systems used to execute the concept vary significantly, and pose numerous technical and operational challenges.\u0000 PETRONAS Carigali Sdn. Bhd. (PCSB) undertook the development of BARDEGG-2 and Baronia EOR project located offshore Sarawak, Malaysia within South China Sea. Baronia B Central Processing Platform (BNCPP-B) was installed in May 2017 and was the first PCSB's float over installation by a portable Dynamic Positioning 2 (DP2) vessel.\u0000 A Deck Transportation Vessel (DTV) was upgraded with DP2 capability by adding two portable azimuth thrusters to allow safe and efficient installation of the topside. Sea trials and annual DP trials were conducted in ensuring DP functionality and performance in compliance to Class requirement. Float over engineering was performed including float over design criteria, hydrodynamic analysis and mating analysis. All outfitting, secondary steel works and grillage structures were installed on the vessel before mobilization for transportation and installation of BNCPP-B Topside.\u0000 The operation required high precision engineering and execution considering the close proximity between BNCPP-B Topside and existing BNQ-B platform during the vessel approach towards BNCPP-B Jacket. Additional control measures were taken for safe execution. DP checks were conducted at certain intervals while approaching the jacket. BNCPP-B Topside installation commenced at first daylight on 22 May 2017 and successfully completed by noon.\u0000 It has again proven that float over installation by portable DP2 vessel was technically feasible and would be an example for future projects undertaking the same approach. Having a vessel with portable DP2 system will help to optimize the vessel utilization and improve overall project cost.\u0000 This paper aims to highlight the float over methodology for BNCPP-B topside using portable DP2 vessel and the technical challenges for offshore execution. The activities during the float over operation, analysis and simulation methods are also presented in this document.\u0000 This paper should be an interest to those who will perform the offshore installation via float over method utilizing Portable DP Vessel.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89662327","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
Predicting Valve Failures in the Digital Age of Valve Management 数字时代阀门管理中的阀门故障预测
Day 1 Mon, November 11, 2019 Pub Date : 2019-11-11 DOI: 10.2118/197451-ms
Simon Jeeves, Carina Berstad, Markus Bratten Gjøvåg, Mathias Riple, Marita Bjorøy, John-Kenneth Sangolt, Thomas Erstad
{"title":"Predicting Valve Failures in the Digital Age of Valve Management","authors":"Simon Jeeves, Carina Berstad, Markus Bratten Gjøvåg, Mathias Riple, Marita Bjorøy, John-Kenneth Sangolt, Thomas Erstad","doi":"10.2118/197451-ms","DOIUrl":"https://doi.org/10.2118/197451-ms","url":null,"abstract":"\u0000 Valves are critical and essential parts in an oil & gas (O&G) production plant, which means that if a failure occurs it can potentially great implications on safety and profitability of the plant.\u0000 The traditional approach in today's oil and gas process industry for verifying valve reliability is simplistic and provides little information regarding valve degradation mechanisms.\u0000 Therefore, this paper discusses new theories and concepts to help increase the reliability of production & safety critical valves.\u0000 Focus has historically been targeting on using corrective and scheduled maintenance strategies, rather than using condition and performance monitoring applications as a tool to plan and prioritize maintenance and achieve a higher standard for safety.\u0000 In the search for a solution to increase the reliability of production and safety critical valves it is reasonable also to look at industry 4.0 and its concepts. The digital revolution which implements concepts such as cyber-physical systems (CPS), industrial internet of things (IIoT) and cloud-based storage. Based on these concepts the paper visits the use of valve diagnostic systems for identifying failure mechanisms of valves subjected to degradation by the application of sensors and small computers used to continuously monitor valve performance and store this data within cloud-based servers.\u0000 Today we experience an enormous progress in real time monitoring by use of sensors in conjunction with data collectors. There is new technology to process and gather data that supports decision making, such as Valve Diagnostic System (VDS). By taking advantage of new technology there are immense benefits to be had by monitoring valves rather than traditional physical observation and testing. This method has multiple advantages and it can contribute to reducing maintenance cost, down time and increase safety.\u0000 Multiple unwanted and hazardous events have occurred through the last decades, such as the tragic Piper Alpha disaster (Macleod & Richardson, 2018). This has contributed to drive the industry to improve and adhere to safety regulations and requirements. This makes the sensor technology even more beneficial and opens a wide range of potentials within the maintenance- and risk management genres.\u0000 Today all in-operation risk calculations are based on reported accidents or unwanted occurrences. This practice gives way to inaccurate reliability calculations that are indisputable and inaccurate. It is a practice where potentially many failures are not reported, understood or even revealed. Experts within Functional Safety Management points to the basis of the calculations with skepticism due to the validity of the data and the fact that the data in itself is not a proactive approach to sound valve management.","PeriodicalId":11061,"journal":{"name":"Day 1 Mon, November 11, 2019","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86567103","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: 1
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