• A novel wellbore strengthening method by using rotary jet while drilling 

  Wang, Peng; Ni, Hongjian; Liu, Haoge; Zhao, Bo (Journal article, 2020)

  Lost circulation is one of the most common and costly problems in drilling operations. Improving the wellbore strengthening by plugging drilling induced fractures using rotary jet method is a novel and effective method to ...

• Effects of Harsh Weather on Delayed Wireline Formation Fluid Sampling 

  Lei, Guowen; Hardikar, N. P.; DiFoggio, R.; Zeng, X. (Springer Series in Geomechanics and Geoengineering;, Chapter, 2019)

  This paper discusses two cases where formation fluids were sampled after prolonged exposure to drilling fluid invasion. The long exposure occurred due to suspension of rig activities following the arrival of the Typhoon ...

• An attention‐based category‐aware GRU model for the next POI recommendation 

  Liu, Yuwen; Pei, Aixiang; Wang, Fan; Yang, Yihong; Zhang, Xuyun; Wang, Hao; Dai, Hong-Ning; Qi, Lianyong; Ma, Rui (Journal article; Peer reviewed, 2021)

• Recent technological and methodological advances for the investigation of landslide dams 

  Fan, Xuanmei; Dufresne, Anja; Whiteley, Jim; Yunus, Ali P; Subramanian, Srikrishnan Siva; Okeke, Chukwueloka A.U.; Pánek, Tomas; Hermanns, Reginald; Ming, Peng; Strom, Alexander; Havenith, Hans-Balder; Dunning, Stuart; Wang, Gonghui; Stefanelli, Carlo Tacconi (Peer reviewed; Journal article, 2021)

  River-damming by landslides is a widespread phenomenon around the world. Recent advances in remote sensing technology and the rising commercial availability of their products enable the assemblage of increasingly more ...

• Silicon Powder Properties Produced in a Planetary Ball Mill as a Function of Grinding Time, Grinding Bead Size and Rotational Speed 

  Nilssen, Benedicte Eikeland; Kleiv, Rolf Arne (Peer reviewed; Journal article, 2020)

  Mechanical milling is a promising route for production of submicron and nano sized silicon powders, but it is challenging to predict and control the product properties. In this study a metallurgical grade silicon quality ...

• Early field planning using optimisation and considering uncertainties - Study case: Offshore deepwater field in Brazil 

  Sales, Leonardo de Pádua Agripa; Jäschke, Johannes; Stanko, Milan (Peer reviewed; Journal article, 2021)

  During early phases of oil field development, field planners must decide upon the optimal number of wells and optimal field plateau rate, usually by performing sensitivity studies. These design choices are then “frozen” ...

• Performance of Identical Rockbolts Tested on Four Dynamic Testing Rigs Employing the Direct Impact Method 

  Li, Charlie Chunlin; Hadjigeorgiou, J.; Mikula, P; Knox, G.; Darlington, B.; Royer, R.; Pytlik, A.; Hosp, M. (Peer reviewed; Journal article, 2021)

  Impact drop tests are routinely used to examine the dynamic performance of rockbolts. Numerous impact tests have been carried out in the past decades on independently designed, constructed and operated testing rigs. Each ...

• Digital well planning - Well Intervention 

  Selmer, Håkon (Master thesis, 2021)

  Dagens olje og gass industrien har sett en formidabel fremgang i teknologi og utstyr som er nødvendig for å kunne gjennomføre stadig mer krevende brønnintervensjoner. Brønnplanleggingsprosessen har ikke sett den samme ...

• Prediction and Early Detection of Karsts — An Overview of Methods and Technologies for Safer Drilling in Carbonates 

  Maksimov, Danil; Pavlov, Alexey; Sangesland, Sigbjørn (Peer reviewed; Journal article, 2021)

  The nature of carbonate deposition as well as diagenetic processes can cause the development of unique geological features such as cavities, vugs and fractures. These are called karsts. Encountering karsts while drilling ...

• Hierarchical Clustering Combination and an Algorithm to Solve the Tanglegram Layout Problem 

  Nguyen, Nghia (Master thesis, 2021)

  I petroleumsgeologifeltet har ulike tilnærminger til maskinlæring vist at det finnes et substansielt potensial som kan supplere og på sikt erstatte konvensjonelle og arbeidsintensive metoder. Noen forfattere har for eksempel ...

• EFFECT OF WATER QUALITY ON SPONTANEOUS IMBIBITION IN CARBONATE CORES 

  Mushabe Raymond (Master thesis, 2021)

  Forskningsspørsmålet i dette arbeidet var effekten av vannkvalitet på spontan oppsuging (SI) i karbonatkjerner. Målet var å endre fra oljefuktende til vannfuktende tilstand kjerner for å oppnå mer spontan oppsuging av vann ...

• Velocity Depth Trends Prediction on the Norwegian Continental Shelf (NCS) Wells Using the Bounding Average Method 

  Davy, Nandito (Master thesis, 2021)

  Earth consists of heterogeneous layers due to the complex sedimentation processes, in which lithifies both unconsolidated sand and siliciclastic clays into sandstone and shale. These two sedimentary rocks are the most ...

• Calculation of acoustic wave velocities based on digital rock models 

  Bakke, Andrine (Master thesis, 2021)

  Beregning av bølgehastigheter basert på μCT-bilder av bergarter kan gi verdifull kunnskap som kan brukes ved tolkning av seismisk data. For å sammenligne hastighetsresultatene fra en avlastet kjerneprøve med petrofysiske ...

• Bergmekanisk analyse av koplingssporet mellom ny og gammel Ulriken jernbanetunnel 

  Toft, Jon Torstein (Master thesis, 2021)

  I denne masteroppgaven presenteres en bergmekanisk analyse for koplingssporet mellom ny og gammel jernbanetunnel i Ulriken. For å møte fremtidens behov har et nytt tunnelløp blitt drevet parallelt det gamle tunnelløpet. ...

• Petrogenesis of Fe-Ti-P rich rock in the Siljan-Hvarnes Intrusion, S.E. Norway 

  Andersen, Tord Engelhardt (Master thesis, 2021)

  Siljan -Hvarnes-intrusjonen ligger i Vestfold Graben, i S.E. Norge. Intrusjonen ble formet for 277 M. år siden under den mest aktive vulkanske perioden i dannelsen av Oslo Graben. Intrusjonen består av flere sammenflettede ...

• Behaviour of Rock Support Affected by Earthquake Loading - A Numerical Study 

  Karki, Bibek (Master thesis, 2021)

  Underground structures have played a major role in supporting infrastructure development such as water supply systems, storage facilities, transportation, and others. Furthermore, the construction of underground facilities ...

• Wettability Alteration Measurement Using Zeta Potential 

  Trivedi Lay (Master thesis, 2021)

  Denne oppgaven demonstrerte en velorganisert og detaljstudie om fuktbarhetsendring av karbonater / kalkstein, Ekofisk krittkjerneprøver, glass og kalsitt og effekten av Na + 1, Ca + 2 og Mg + 2-ioner på fuktighet av disse ...

• Gjennomførbarhet med roadheader som drivemetode på ny togtunnel i Oslo 

  Mohus, Gustav Aarre (Master thesis, 2021)

  Fram mot 2040 er det forventet en betydelig befolkningsvekst på Østlandet. For å håndtere flere reisende må togkapasiteten gjennom Oslo sentrum økes. Begrensede arealer i dagen gjør at mulighetene i undergrunnen må utnyttes. ...

• A Lumped Multi-element Model for Analysing the Effects of the Top Drive Mass and the Drill Line Elasticity 

  Eiane, Lise (Master thesis, 2021)

  Heisespillet i boreta ̊rnet har enda ikke blitt inkludert i de eksisterende multi-element mod- ellene for aksielle vibrasjoner av borestrengen. Eksperimentelle resultater tyder derimot pa ̊ at heisespillet kan ha en effekt ...

• Laboratory tests and numerical modeling of block models for evaluation of rock mass behaviour when subject to an anchoring load 

  Aasbø, Karsten Sannes (Master thesis, 2021)

  Bergankere består av lastbærende komponenter, oftest stag eller kabler, og benyttes til å forankre konstruksjoner eller til å forsterke grunnen, eksempelvis til forankring av demning og brofundamenter samt forsterkning av ...

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