Blar i NTNU Open på forfatter "Lei, Guowen"
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Automated Methodologies for Decision Support in Field Development
Lei, Guowen (Doctoral theses at NTNU;2022:182, Doctoral thesis, 2022)This thesis deals with automated methodologies for decision support of offshore field development planning. The thesis is in two parts: methodology development and application to a real-world field case. In the first ... -
Compact Formulations for Efficient Early-Phase Field Development Optimization of Multi-Reservoir Fields
Lei, Guowen; Silva, Thiago Lima; Stanko, Milan (Peer reviewed; Journal article, 2021)A compact formulation has been developed to efficiently optimize early-stage field development planning of multi-reservoir fields. The proposed formulation is a mixed-integer linear programming model which employs ... -
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 ... -
Formulations for automatic optimization of decommissioning timing in offshore oil and gas field development planning
Lei, Guowen; Stanko, Milan; Silva, Thiago Lima (Journal article; Peer reviewed, 2022)A mathematical programming formulation has been developed to optimize the drilling program, the production allocation, and the decommissioning time in early-stage field development planning. Various abandonment constraints ... -
A Mathematical Programming Approach to Determine Optimal Tieback Development Concepts of Two Offshore Oil Fields in the Barents Sea
Lei, Guowen; Silva, Thiago Lima; Stanko, Milan (Chapter, 2021)In this paper, we present a mathematical programming approach to evaluate the conceptual study of regional integrated development for Alta-Gohta discoveries in the Barents Sea. Two alternative scenarios are investigated, ... -
Price stress testing in offshore oil field development planning
Lei, Guowen; Hagspiel, Verena; Stanko, Milan (Peer reviewed; Journal article, 2022)Oil & gas field development planning has the objectives of maximizing economic value and also mitigating potential risk. An optimal development concept and strategy depend on the selected oil price trajectory. The conventional ... -
Producing Gas-Oil Ratio Performance of Conventional and Unconventional Reservoirs
Lei, Guowen (Master thesis, 2012)This study presents a detailed analysis of producing gas-oil ratio performance characteristics from conventional reservoir to unconventional reservoir. Numerical simulations of various reservoir fluid systems are included ... -
The Use of Mathematical Programming to Determine Optimal Production and Drilling Schedule in an Offshore Oil Field, A Case Study From the Barents Sea
Lei, Guowen; Stanko Wolf, Milan Edvard; Silva, Thiago Lima; Widerøe, Tom; Skogvang, Arnljot (Chapter, 2021)A field with two neighboring reservoirs was discovered in the Barents Sea in 2013 and 2014. After a successful extended well test of an appraisal well in 2018 and initial field planning tasks, a preliminary drilling and ...