Now showing items 41-56 of 56

    • Rate of penetration optimization using moving horizon estimation 

      Sui, Dan; Aadnøy, Bernt Sigve (Journal article; Peer reviewed, 2016)
      Increase of drilling safety and reduction of drilling operation costs, especially improvement of drilling efficiency, are two important considerations in the oil and gas industry. The rate of penetration (ROP, alternatively ...
    • REAL-TIME DATA DRIVEN ROP AND TORQUE MODELLING AND OPTIMIZATION USING MACHINE LEARNING 

      Ruiz Beviglia, Renan Gonzalo (Master thesis, 2021)
      Obtaining the maximum rate of penetration (ROP) is one of many techniques to reduce cost and Non-Productive Time (NPT) in drilling wells. Many parameters affect ROP, including hole cleaning, tooth wear, etc. The study was ...
    • Reference Dataset for Rate of Penetration Benchmarking 

      Tunkiel, Andrzej Tadeusz; Sui, Dan; Wiktorski, Tomasz (Peer reviewed; Journal article, 2020-10)
      In recent years, there were multiple papers published related to rate of penetration prediction using machine learning vastly outperforming analytical methods. There are models proposed reportedly achieving R2 values as ...
    • Review and investigations on geothermal energy extraction from abandoned petroleum wells 

      Sui, Dan; Wiktorski, Ekaterina; Røksland, Marius; Basmoen, Tommy A. (Journal article; Peer reviewed, 2018-08)
      Geothermal energy is a sustainable and renewable energy source, which can be used in electricity production, space heating/cooling, and other industrial applications. In the recent years, it has been gathering more and ...
    • ROP Modeling 

      Aarø, Tord (Bachelor thesis, 2022)
      Drilling fast and safe has and is a key value for operator companies. Maintaining a high Rate of Penetration (ROP) during drilling without causing incidents enables drilling project costs to be reduced. In 1964 Bingham ...
    • Rotary Steerable System modelling and simulator 

      Pinheiro Saramago de Andrade, Caetano (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-12)
      Nowadays, there is a fact in the oil industry: directional drilling is a common and essential procedure in major drilling operations. With the development of technologies that allows horizontal and multilateral wells, the ...
    • Rotary steerable systems: mathematical modeling and their case study 

      Andrade, Caetano; Saavedra, Luis; Tunkiel, Andrzej Tadeusz; Sui, Dan (Peer reviewed; Journal article, 2021-05)
      Directional drilling is a common and essential procedure of major extended reach drilling operations. With the development of directional drilling technologies, the percentage of recoverable oil production has increased. ...
    • Study on separation factor models for well anti-collision analysis 

      Madeira, Rafael; Sui, Dan (Peer reviewed; Journal article, 2021-07)
      Anti-collision analysis has been becoming even more important in the past few years with the increasing amount of wells drilled in highly congested fields. The separation factor (SF) is a critical safety parameter to avoid ...
    • The Application of Data Analytics and Machine Learning for Formation Classification and Bit Dull Grading Prediction 

      Frankiewicz, Jakub Tomasz (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)
      The oil and gas industry, especially its upstream part generates a massive amount of data. The proper data collection and processing are the vital elements of reducing the non-productive time and increasing the drilling ...
    • Training-while-drilling approach to inclination prediction in directional drilling utilizing recurrent neural networks 

      Tunkiel, Andrzej Tadeusz; Sui, Dan; Wiktorski, Tomasz (Peer reviewed; Journal article, 2020)
      Machine Learning adoption within drilling is often impaired by the necessity to train the model on data collected from wells analogous in lithology and equipment used to the well where the model is meant to be deployed. ...
    • Trajectory Control Optimization Using the RSS Model 

      Saavedra Jerez, Luis (Master thesis, 2021)
      Directional drilling has become a standard method to drill a well since the last decades, mainly caused by directional technologies and methods developments. The next step that the drilling industry is ready to take is to ...
    • Trajectory Control Optimization Using the RSS Model 

      Saavedra Jerez, Luis (Studentoppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-14)
      Directional drilling has become a standard method to drill a well since the last decades, mainly caused by directional technologies and methods developments. The next step that the drilling industry is ready to take is to ...
    • Trajectory Control via Reinforcement Learning with RSS Model 

      Gocmen, Emre Baris (Master thesis, 2022)
      Various researchers proposed several types of methods, algorithms, and simulator to control bottom hole assembly (BHA) while drilling a deviated well. These works consist of drilling, control, mechanical and electrical ...
    • Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current - Model Development and Tuning 

      Ma, Yucong; Xing, Yihan; Sui, Dan (Peer reviewed; Journal article, 2022)
      A subsea shuttle tanker (SST) concept for liquid carbon dioxide transportation was recently proposed to support studies evaluating the ultra-efficient underwater cargo submarine concept. One important topic is the position ...
    • Twisted Elliptic Cylinder of Uncertainty: An Alternative Method to Calculate the Anti-Collision Safety Factor 

      Madeira, Rafael Alves (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-12-04)
      A precise anti-collision analysis is becoming even more important in the past few years, with the increasing amount of wells being drilled in highly congested fields. The costs associated with the production fields have ...
    • Uncertainty analysis of Supervised machine learning predictions applied to Lithology classification 

      Shashel, Alina (Master thesis, 2022)
      Geosteering is the technique of guiding directional drilling to remain within the pay zone. This process demands a thorough survey of the lithological properties of the surrounding geo- logical strata. Since logging while ...