• A New Method for Predicting the Crack Propagation Process of Brittle Rock under Thermo-Hydro-Mechanical Loading Conditions 

  Yi, W.; Rao, Qiuhua; Li, Z.; Li, Charlie Chunlin (Peer reviewed; Journal article, 2021)

  Prediction on the crack propagation process of brittle rock under Thermo-Hydro-Mechanical (THM) loading conditions is very important for crack-arrest design and disaster prevention in deep rock engineering. Although currently ...

• Evaluation of in-situ stress state along the shotcrete lined high-pressure headrace tunnel at a complex Himalayan geological condition 

  Basnet, Chhatra Bahadur; Panthi, Krishna Kanta (Peer reviewed; Journal article, 2021)

  The Himalayan region is renowned with its complex topography and active tectonic movement, which causes accumulation and sudden release of strain energy instigating changes in the in-situ stress state. This paper evaluates ...

• Performance of a fully grouted GFRP rock bolt under combined pull and shear loading 

  Hovgaard, M.B.; Li, Charlie Chunlin; Mikkelsen, L.P. (Chapter, 2020)

  Glass Fiber Reinforced Polymer (GFRP) rock bolts is gaining attention, as an alternative to steel bolts, for permanent rock support in civil underground infrastructures like road tunnels. GFRP holds many advantages for ...

• Updated in situ rock stresses in Norway based on recent estimations and measurements 

  Simonsen, Aurora; Li, Charlie Chunlin (Chapter, 2019)

  This paper presents the current in situ rock stresses in Norway. Information about the stress state was obtained by estimations from focal mechanism, borehole breakout and drilling-induced fractures, and via overcoring and ...

• Effects of Confining Stress on the Post-Peak Behaviour and Fracture Angle of Fauske Marble and Iddefjord Granite 

  Zhang, Huijian; Li, Charlie Chunlin (Peer reviewed; Journal article, 2019)

  In general, the strength of rock and rock mass is non-linearly associated with the confining stress. Thus, the non-linear Hoek–Brown strength criterion (Hoek and Brown 1980, 1982) is more appropriate than the linear ...

• Principles and methods of rock support for rockburst control 

  Li, Charlie Chunlin (Peer reviewed; Journal article, 2021)

  This paper presents the principles of rock support for rockburst control and three rockburst support systems used in deep metal mines. Before the principles of rock support are presented, rock fracture related to strain ...

• Conceptual models for rock burst and energy transformations in strain burst 

  Li, Charlie Chunlin (Chapter, 2020)

  The occurrence of a rock burst event depends on two requisites: the secondary stresses after rock excavation must be beyond the rock strength and there are excessive energy releases from the rock mass in addition to the ...

• Optimalisering av kontraktstrategi for injeksjonsarbeider 

  Rongved, Ida (Master thesis, 2021)

  Injeksjon i berg er et veletablert prinsipp for å redusere innlekkasjen til bergrom i Norge. Likevel er manglende kunnskap og utilstrekkelige kontraktuelle hjelpemidler for å håndtere usikkerhet tilknyttet innlekkasjer, ...

• 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 ...

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