The interactive model for automatic calculation of the well cluster construction complex cost

Currently, companies are consuming transitions to the development of the difficult oil and gas fields. The difficulty implies factors: features of geological conditions, remote geographic location, features of the relief. The development of new oil and gas fields requires design approaches that ensure maximum profitability on complex assets. One of the promising development options is the digitalization and automation of design processes. The paper proposes a new approach to assessing capital costs when designing well pads in the field. A new method is proposed for calculating costs and restrictions at the stage of resources for optimizing a well pad, taking into account detailed topography and resource availability through digitalization and automation. The problem was solved using an interactive ontological model with built-in knowledge bases and calculation algorithms. The model was tested at the field, the possible risks of using the model were assessed, and sufficient accuracy of the obtained values was obtained. The results of the work make it possible to improve the stage of optimization of the well pad, taking into account the costs of resources: drilling, engineering preparation, backfilling of the road, supply of communications, availability of resources and unforeseen costs. The work supports the trends of digitalization and technological processes and business processes. The developed model made it possible to digitize the stage of optimizing the location of the well pad, to automate the multifactor calculation of costs and restrictions. The results make the possible full automation for definition well pad placement, later on, taking into account detailed topography and resource availability.

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Repurposing of Offshore Oil and Gas Cables for Renewable Generation: Feasibility and Conceptual Qualification

10.4043/30933-ms ◽

2021 ◽

Author(s):

Ramy Magdy A. Mahmoud ◽

Hazem Fayad ◽

Paul E. Dodds

Keyword(s):

Wind Farm ◽

Oil And Gas ◽

Capital Expenditure ◽

Wind Farms ◽

Cost Effective ◽

Field Testing ◽

Capital Costs ◽

The North ◽

Oil And Gas Fields ◽

Gas Fields

Abstract Wind farms are expected to be deployed in the North Sea in increasing numbers and at ever greater distances from land, over the coming decades. Many nearby oil and gas fields have reached or are near the end of their lifespans, and their operators are eager to explore innovative ways to reduce decommissioning costs. One possibility would be to repurpose some of their infrastructures for use by wind farms, which would both delay decommissioning and reduce the wind farm capital costs. This paper investigates the potential for repurposing existing submarine power cores in decommissioned oil and gas fields as transmission cables for offshore renewables. Offshore power cables generally have longer lifetimes than are needed to deplete hydrocarbon reservoirs. Cable transmission capacity could be too low to provide the main connection to wind farms, but there is scope to increase capacity or use cables as auxiliary connections. A qualification methodology is proposed to assess whether existing cables might be usefully repurposed. Repurposing cables has an impact on renewable project capital expenditure (CAPEX) and levelised cost of energy (LCOE), it also positively affects decommissioning cost and the environment. The qualification methodology provides a cost-effective initial appraisal prior to field testing.

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The problem of abnormally low formation pressure on the oil and gas fields in Ukraine

Мінеральні ресурси України ◽

10.31996/mru.2019.4.17-22 ◽

2020 ◽

pp. 17-22

Author(s):

A. Pokhylko

Keyword(s):

Pressure Gradient ◽

Oil And Gas ◽

Low Pressure ◽

Formation Pressure ◽

Gas Field ◽

Oil And Gas Fields ◽

Geological Conditions ◽

Remaining Oil ◽

Oil And Gas Field ◽

Gas Fields

The article presented information about specific of geological conditions depleted oil and gas fields, which has Remaining Oil and Gas in Place. The reasons of abnormally low pressure nascency in the deposit has been analyzed. The article presents information about influence of geodynamic processes and structural and tectonics of Earth crust to formation pressure. The information about availability of initial abnormally low formation pressure in Ukrainian Oil and Gas-Condensate fields has been written. Supposition of nascence the abnormally low formation pressure in difficult oil/water/gas saturation geological formation has been analyzed. The drop of pressure in of initial formation has been analyzed and researched. The article presented that drop of pressure gradient in main Ukrainian oil and gas fields is equal to the value of abnormally low formation pressure.The problems of considerable remaining Oil and Gas in with abnormally low pressure in Ukrainian oil and gas field deposit has been analyzed. The information about oil and gas reservoir conditions of depleted field and brown fields in Ukraine has been analyzed.The plot of the formation pressure gradient decreasing for Chornukhynske, Denysivske, Solokhivske, Druzheliubivske, Tymofiivske and Yablunivske fields has been presented. The drop of pressure to abnormally low in Chornukhynske, Denysivske, Solokhivske, Druzheliubivske, Tymofiivske and Yablunivske fields has been established. The problems of drilling and cementing in the well with abnormally low pressure has been describe. Difficult geological conditions in Ukrainian oil and gas field deposit has been analyzed.The article shows the importance to control parameters of all technological liquids, especially density of drilling and cementing liquid in a time of drilling well with abnormally low pressure. The article shows the aspect of the using of lightweight grouting solutions for mounting wells with abnormally low reservoir pressures, the importance of controlling the contamination of the bottom zone of the formation and preventing the occurrence of hydraulic fracturing during cementing.

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Research of Kinetics of Coal Briquette Drying and Determination of the Optimum Mode Providing Fire and Explosion Safety

E3S Web of Conferences ◽

10.1051/e3sconf/20184101040 ◽

2018 ◽

Vol 41 ◽

pp. 01040

Author(s):

Vasily Murko ◽

Anatoly Zaostrovsky ◽

Elena Murko ◽

Mikhail Volkov

Keyword(s):

Oil And Gas ◽

Utilization Efficiency ◽

Oil And Gas Fields ◽

Geological Conditions ◽

Production Growth ◽

Fire And Explosion ◽

Gas Fields ◽

Direct Use ◽

Kinetics Of

The role coal in power industry is predicted to be increased in future that is caused by its large stocks and depletion of oil and gas fields. Due to production growth, deterioration in mining and geological conditions and broad mechanization of production, the quality characteristics of coals as ash content, particle-size distribution, humidity and sulfur content worsen. Therefore, practically all mined coal requires enriching. The smallgrade and fine concentrates received after enrichment often happen to be unsuitable because of their fineness for further processing or direct use. Therefore briquetting is applied for possibility of further processing or increased utilization efficiency. Compared to the conventional fuel the briquetted fuel possesses higher calorific capacity and bigger stability during storage and transportation.

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Geomechanical Estimation of the Influence of Horizontal Coalbed Methane Well Design on Coal Seam Permeability

E3S Web of Conferences ◽

10.1051/e3sconf/201910501014 ◽

2019 ◽

Vol 105 ◽

pp. 01014

Author(s):

Aleksandr Shevtsov ◽

Veniamin Khyamyalyaynen

Keyword(s):

Coal Seam ◽

Coalbed Methane ◽

Oil And Gas ◽

Two Dimensional ◽

One Dimensional ◽

Oil And Gas Fields ◽

Well Design ◽

Geological Conditions ◽

Gas Fields ◽

Conventional Oil

The paper presents a method of choosing the design of horizontal coalbed methane well by estimation of a coal seam permeability on the results of one-dimensional and two-dimensional geomechanical modeling. The differences in the preparation of one-dimensional geomechanical models of coalbed methane fields from models for conventional oil and gas fields are noted. The results of preparation of one-dimensional geomechanical model based on data from one of the vertical exploration coalded methane wells and two-dimensional geomechanical modeling of coal seam for three common designs are presented. The obtained results allow us to conclude that geomechanical modeling is a suitable tool for estimation of coal seam permeability changes and choosing the most effective well design for the considered mining and geological conditions. In particular, in the coal seam under study, a multilateral well can cause the greatest increasing of permeability.

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Lithium extraction from associated waters on the example of Orenburg OGCF

PROneft’ Proffessional’no o nefti ◽

10.51890/2587-7399-2021-6-1-29-32 ◽

2021 ◽

Vol 6 (1) ◽

pp. 29-32

Author(s):

A. A. Bandaletova ◽

A. Y. Gavrilov ◽

E. V. Galin

Keyword(s):

Mineral Resource ◽

Western Siberia ◽

Oil And Gas ◽

Raw Materials ◽

Resource Base ◽

Capital Costs ◽

Oil Reserves ◽

Oil And Gas Fields ◽

Gas Fields ◽

Extraction Of Metals

The state of the mineral resource base of hydrocarbons in recent years has been characterized by a decrease in proven reserves and extremely low rates of their reproduction. In Western Siberia, as in other oil-bearing provinces of Russia, economically profitable oil reserves are decreasing. It is obvious that the development of the fuel and energy complex is becoming more focused on the development of hard-to-recover reserves, which account for almost 2/3 of the proven oil reserves. Technologies for the extraction of such raw materials are characterized by higher capital costs, which requires the search for new ways to increase the profitability of projects. One of these areas is the extraction of metals from the associated water of oil and gas fields. In this paper, the possibility of using the technology for extracting lithium from the associated waters of the Orenburg oil and gas condensate field is evaluated, and the boundary conditions for the implementation of this technology are determined.

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