Design basis for development of offshore oil and gas fields in the Sea of Okhotsk

• Main Author: Volkov Aleksandr
• Other Authors: Gudmestad Ove Tobias
• Format: Master Thesis
• Language: English
• Published: uis 2023
• Subjects: Okhotsk; Triton; Sakhalin
• Online Access: https://hdl.handle.net/11250/3084220

Much attention is now being paid to the development of offshore oil and gas fields. Fields located on the continental shelf of the Sea of Okhotsk are of great value as they contain significant volumes of oil and gas. In addition to maintaining production from existing offshore fields on the Russian continental shelf, it is important to engage in the development of unexplored or poorly explored areas. The Sakhalin 1 and Sakhalin 2 projects have been in production for some time. Oil and gas production from these projects continues to this day. The Sakhalin 3 project is developing the Yuzhno-Kirinskoye gas condensate field, which was discovered in 2010. In 2017 and 2018, exploration work led to the discovery of two oil fields, Neptun and Triton, with total reserves estimated at 500 million tonnes. The Triton field was among the top 3 largest fields discovered worldwide in 2018. Today, oil and gas companies strive to develop fields in the safest, most technologically efficient, and environmentally friendly way. Therefore, the assessment of the field potential, the proposal of the field development option and the preliminary version of the production profile calculation is an important task, which can later be used as the basis for selecting the field development option when specifying the field data. The purpose of this master's thesis is to identify a technical feasible option of developing the Triton field. In Chapter 1 a review of the different phases of an offshore field development is described. The master’s thesis includes in Chapter 2 a description and analysis of the natural, climatic, and geographical conditions in which the field is located. In addition, in Chapter 3, the geology of the Triton field reservoir is described. An estimate calculation using Python programming language of potential geological reserves are made in accordance with the data obtained seismic exploration was performed, and the first well was drilled. Based on data from neighbouring fields and relative phase permeability curves, an ...