scholarly journals MODELING AND ANALYSIS OF NONSTATIONARY GAS FILTRATION UNDER GAS DYNAMIC PARAMETERS VARIATION

2021 ◽  
Keyword(s):  
Porous Medium ◽  
Oil And Gas ◽  
Initial Conditions ◽  
Numerical Calculations ◽  
Mathematical Tool ◽  
Dynamic Parameters ◽  
Gas Filtration ◽  
Modeling And Analysis ◽  
Gas Recovery ◽  
Gas Dynamic

A mathematical model that describes a partial differential equation with boundary, internal and initial conditions was developed in the article, to study the gas-dynamic parameters of the gas filtration process in a porous medium under isothermal conditions. The study was performed based on the reviews of research works related to mathematical modeling in recent years. Computational experiments (CE) were conducted on a computer to determine the response of the main parameters on the process of gas filtration in a porous medium on the basis of the developed mathematical tool (model, numerical algorithm, and software). The results of numerical calculations were presented in the form of tables and graphical objects for the purpose of developing oil and gas fields and increasing oil and gas recovery. With the analysis of the numerical calculations performed, it was established that when the parameters and properties of gas filtration are considered as functions of pressure, then the process of gas filtration in porous media can be adequately described, as a whole, and it correctly reflects the main point of the object under research. It could be concluded that with the mathematical tool developed, it became possible to conduct a comprehensive study of the process of gas filtration in a porous medium.

scholarly journals Numerical study of fluid filtration in three-layer interacting pressure porous formations

2021 ◽  
Vol 264 ◽  
pp. 01018
Author(s):  
Normakhmad Ravshanov ◽  
Zafar Abdullaev ◽  
Sabur Aminov ◽  
Otabek Khafizov
Keyword(s):  
Oil And Gas ◽  
Initial Conditions ◽  
Numerical Study ◽  
Mathematical Tool ◽  
Gas Filtration ◽  
Fluid Filtration ◽  
Groundwater Levels ◽  
Gas Recovery ◽  
Vertical Drainage ◽  
Drainage Wells

A mathematical model was developed to numerically study the process of fluid and gas filtration in three-layer interacting pressure porous formations. It is based on the reviews related to the mathematical modeling developed in recent years; it describes a system of partial differential equations with boundary and initial conditions and a conservative numerical algorithm for conducting a computational experiment (CE) on a computer. In this article, to analyze and make managerial decisions, the results of numerical calculations are presented in the form of graphical objects, which can be used to propose schemes for the location and capacity of vertical drainage wells to protect irrigated and non-irrigated areas from flooding. Using the proposed mathematical tool, it is possible to obtain the predicted groundwater levels of any area for the required period of time, taking into account some factors, such as the inhomogeneity of the reservoir in a plan, the slope of the confining layer, and other hydrogeological, hydro-technical, and natural conditions, or to calculate the thickness and the optimal location of vertical drainage wells to protect the territory, and to develop oil and gas fields and increase their oil and gas recovery. Analysis of the results of a numerical study of the process made it possible to establish the degrees of influence of the elastic filtration regime in a weakly permeable layer on the overflow into adjacent layers.

scholarly journals New Glycerol Upgrading Processes

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 103
Author(s):  
Miguel Ladero
Keyword(s):  
Renewable Energy ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Oil And Gas ◽  
The Other ◽  
Energy Policies ◽  
Gas Recovery ◽  
The Us ◽  
The Eu

Energy policies in the US and in the EU during the last decades have been focused on enhanced oil and gas recovery, including the so-called tertiary extraction or enhanced oil recovery (EOR), on one hand, and the development and implementation of renewable energy vectors, on the other, including biofuels as bioethanol (mainly in US and Brazil) and biodiesel (mainly in the EU) [...]

Initiatives in UK Offshore Decommissioning Following the Wood Review: Applicability for Decommissioning in Norway

2021 ◽  
Author(s):  
Rune Vikane ◽  
Jon Tømmerås Selvik ◽  
Eirik Bjorheim Abrahamsen
Keyword(s):  
Swot Analysis ◽  
Oil And Gas ◽  
Petroleum Industry ◽  
Lessons Learned ◽  
Regulatory Regime ◽  
Regulatory Body ◽  
Cost Estimates ◽  
Substantial Impact ◽  
Gas Recovery ◽  
The Uk

Abstract The 2014 Wood Review is a report reviewing UK offshore oil and gas recovery and its regulation, led by Sir Ian Wood. The report identifies and addresses key challenges in the UK petroleum industry, among them the lack of a strong regulatory body and a decommissioning strategy. The UK petroleum industry is mature, and Norway may benefit from UK's experiences in decommissioning. The article investigates the applicability of the Wood Review recommendations for decommissioning in Norway. The analysis of the recommendations in the Wood Review is carried out by a SWOT-analysis of the general recommendations with a high potential impact on decommissioning as well as the five recommendations specific to decommissioning. The recommendations in the Wood Review were broadly accepted by UK authorities and formed the basis for numerous initiatives aimed at improving policies and practices in UK decommissioning. The key initiatives are presented to illustrate how the Wood Review recommendations has been interpreted. A summary of the key differences between the petroleum industries and the regulatory authorities in Norway and the UK is provided for background. Decommissioning in Norway face similar challenges to those identified in the Wood Review. The analysis indicates that several of the UK initiatives following the recommendations in the Wood Review has the potential of improving decommissioning in Norway. Differences in regulatory regimes between the regions may complicate the implementation of some of the initiatives following the Wood Review in Norway. In most cases only minor changes to regulations and/or practices are required. Recent UK initiatives with a high impact on decommissioning include increased focus on sharing of information and lessons learned, increased collaboration, the development of a decommissioning strategy, benchmarking of decommissioning cost estimates for all projects and the development and publishing of annual UK decommissioning cost estimates. There are indications that the Norwegian Petroleum Directorate (NPD) and the Norwegian Ministry of Petroleum and Energy (MPE) are falling behind their UK counterparts in key areas. Norway has limited experience with decommissioning, and scrupulous analysis of lessons learned in other regions is essential. Decommissioning of Norwegian offshore infrastructure is a major undertaking and even minor improvements may have a substantial impact on personnel risk, risk to the environment or the total decommissioning expenditure. The Norwegian regulatory regime has been an integral part of the Norwegian petroleum industry's success in previous decades, and changes to the regime require careful deliberation. The recent implementation of initiatives aimed at improving decommissioning regulations and practices in the UK represents a unique learning opportunity for Norwegian authorities. The analysis suggest that Norway may benefit from adopting some of the UK initiatives following the Wood Review recommendations.

The Research of the Multimedia Technology Application in the Enhancing Oil and Gas Recovery Teaching

2013 ◽  
Vol 671-674 ◽  
pp. 3257-3260
Author(s):  
Wen Guo Ma ◽  
Ke Liang Wang ◽  
Ji Hong Zhang ◽  
Wen Xiang Wu ◽  
Jing Chun Wu ◽  
...  
Keyword(s):  
Training Program ◽  
Oil Recovery ◽  
Oil And Gas ◽  
Teaching Practice ◽  
Theory And Practice ◽  
Petroleum Engineering ◽  
Multimedia Technology ◽  
Personnel Training ◽  
Technology Application ◽  
Gas Recovery

In this paper, the reformation of education concepts is studied during the implementation of the excellent engineer training program process. By the practical experience of innovative engineer personnel training is done in the Enhance Oil Recovery course of teaching practice, the innovative engineer personnel training content and reformation of education concepts is studied. Multimedia Technology ways to enhancing the relationship of theory and practice teaching, strengthen understanding and problem-solving abilities of students on the Enhancing Oil and gas Recovery teaching. It will provide references for the excellent engineer training program process in the field of petroleum engineering university.

Mathematical Modeling and Analysis of Riser Gas Unloading Problem

2018 ◽  
Author(s):  
Raj Kiran ◽  
Saeed Salehi
Keyword(s):  
Oil And Gas ◽  
Numerical Models ◽  
Drilling Fluid ◽  
Extensive Study ◽  
Integrated System ◽  
Modeling And Analysis ◽  
Oil And Gas Exploration ◽  
Water Based ◽  
Point Pressure ◽  
Comparative Results

Pushing the boundaries of oil and gas exploration and development to new frontiers have led to exposure and more significant uncertainties, which necessitates robust strategies and techniques. With the increasing water depth, longer risers, and harsh pressure and temperature conditions; the risk of riser gas getting undetected get bigger. The lack of an integrated system to anticipate the controlling parameters at the choke below the BOP constrains the tackling operations and exacerbate the side effects of oil and gas well blowouts. This leads to an urgent need for an extensive study to address the riser gas unloading (RGU) events. This study encompasses the development of a robust model that can characterize the effect of different parameters such as temperature, mud types, back pressure, and solubility in RGU events. It also presents comparative results of oil-based and water-based mud systems, using a novel tool based on analytical and numerical models. The analytical model is constructed using combined gas law, heat transfer mechanism, and gas solubility and bubble point pressure concepts. Results suggest that the oil-based mud (OBM) takes more time for gas unloading in comparison to the water-based mud. Also, a significant deviation was observed in unloading patterns while considering temperature effect. For the drilling fluid without temperature consideration, the gas unloading occur in a smaller span of time and at a higher depth. Overall, this paper will demonstrate the effect of different parameters affecting the gas unloading in the riser, and present a comparative study of different parameters using an analytical which can be used in the field to get an idea of gas prior to any response for abnormality.

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