EFFICIENCY EVALUATION OF IMPLEMENTATION OF OPTIMIZATION METHODS OF OPERATION MODES OF THE "PLAST - GAS PIPELINE" SYSTEM BY THE METHODS OF MATHEMATICAL MODELING

To date, Ukraine's mature gas fields, which are being developed in the gas regime, are at the final stage of development, which is characterized by a significant depletion of reservoir energy. The final stage of development requires solving complex problems related to watering wells, destruction of the reservoir, removal of formation water and mechanical impurities, increasing back pressure in the system, as well as the moral and physical wear and tear of industrial equipment. In the conditions of falling gas production, a significant part of the operating well stock is unstable, in the mode of unauthorized stops due to the accumulation of liquid at the bottom and insufficient gas velocities for removal to the surface, and also the accumulation of the liquid phase in the lowered places of the gas gathering system. Within the framework of the conducted studies, the gas dynamic models of the operation of the gas collection system of 3 oil/gas-condensate fields (OGCF) are created. A single model of the gas production system "reservoir - well - gas gathering system - inter-field gas pipeline - main facilities" is built. The current efficiency of the gas production, collection and transportation system is assessed. On the basis of model calculations, the current production capabilities of the wells are defined, as well as the "narrow" places of the system. It is established that the introduction of modern technologies for the operation of watered wells without optimizing the operation of the entire gas production system is irrational, since the liquid that is carried out from the wellbore will accumulate in the plumes and increase the back pressure level in the ground part. In conditions of increasing gas sampling, liquid flowlines can be taken out of the loops and deactivated the separation equipment. The feasibility of introducing methods for optimizing the operation modes of the gas production - gathering and transportation system is estimated, which allows choosing the optimal method for increasing the efficiency and reliability of its operation. For the first time in the Ukrainian gas industry, an integrated model of the field is created as a single chain of extraction, collection, preparation and transportation of natural gas, which can be adapted for the development and arrangement of both new and mature deposits. The main advantage of the application for the hydrocarbon production sector is the simulation of the processes, which makes it possible to evaluate the operating mode of the well in the safe zone while reducing the working pressure and introducing various intensification methods, and also to estimate the increase in hydrocarbon production. For the equipment of the ground infrastructure – "midstream" – the main advantage is a reduction in the time required to perform design calculations for gas pipelines, trains and pipelines for transporting multiphase media using public models. The creation and use of integrated models of gas fields gives an understanding of the integral picture of available resources and ensures an increase in the efficiency of field development management. The results of the calculation are clearly correlated with the actual data, which makes it possible to use the models constructed to obtain numerical results.

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Gas production technologies on gas fields at final stage of development

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/194/8/082033 ◽

2018 ◽

Vol 194 ◽

pp. 082033

Author(s):

A V Sarancha ◽

O V Nikitchenko

Keyword(s):

Final Stage ◽

Gas Production ◽

Stage Of Development ◽

Production Technologies ◽

Gas Fields

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METHODS OF MAINTAINING THE PROJECT LEVELS OF GAS PRODUCTION AT THE FINAL STAGE OF DEVELOPMENT OF DEPOSITS

Oil and Gas Studies ◽

10.31660/0445-0108-2017-4-80-83 ◽

2017 ◽

pp. 80-83

Author(s):

E. V. Panikarovskii ◽

V. V. Panikarovskii

Keyword(s):

Flow Velocity ◽

Final Stage ◽

Gas Flow ◽

Gas Production ◽

Stage Of Development ◽

Surfactant Solutions ◽

Gas Flow Velocity

In the case of self-kill of wells, the gas flow velocity in the lifting column is not sufficient for carrying to the surface of the liquid, accumulated in the wellbore. To remove liquid from the bottom of wells, solid and liquid surfactants are used. As a result of conducted studies of surfactant compositions, the components of surfactant solutions were chosen to remove liquid from the bottom of wells.

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Aspects of protection against carbon dioxide corrosion of gas production facilities

E3S Web of Conferences ◽

10.1051/e3sconf/201912102013 ◽

2019 ◽

Vol 121 ◽

pp. 02013 ◽

Cited By ~ 3

Author(s):

Dmitry Zapevalov ◽

Ruslan Vagapov

Keyword(s):

Carbon Dioxide ◽

Gas Production ◽

Gas Condensate ◽

Safe Operation ◽

Hydrocarbon Production ◽

Stage Of Development ◽

The Media ◽

Technical Solutions ◽

Intensive Development ◽

Production Facilities

The modern stage of development of many onshore and offshore gas and gas condensate fields is associated with objects in which carbon dioxide (CO2) gas is present in the production. The presence of CO2 in the produced gas in combination with other factors stimulates the intensive development of corrosion processes, which requires careful and reasonable attitude both to assess the degree of aggressiveness of the media and to choose technical solutions to ensure reliable and safe operation of hydrocarbon production facilities. The authors analyzed the existing approaches to the assessment of the danger of corrosion produced media, selection and implementation of protection against corrosion in the presence in them of aggressive CO2.

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Calculation of the pressure gradient in the Cenomanian gas well operated with a foaming agent

Oil and Gas Studies ◽

10.31660/0445-0108-2020-4-36-50 ◽

2020 ◽

pp. 36-50

Author(s):

V. A. Ogai ◽

E. A. Saburova ◽

V. O. Dovbysh ◽

A. Yu. Yushkov

Keyword(s):

Pressure Gradient ◽

Economic Efficiency ◽

Final Stage ◽

Gas Production ◽

Capital Investments ◽

Liquid Loading ◽

Foam Flow ◽

Stage Of Development ◽

Artificial Lift ◽

High Level

Many of the largest Cenomanian gas deposits in Western Siberia are in the final stage of development. There are the liquid loading in the well and gas production decrease. The choice of artificial lift technologies is due to both the technological features of the production process at a particular field, and the economic efficiency of their application. The technology of injection foaming surfactants into the well is widespread in the world, which is characterized by a relatively low level of capital investments and a high level of efficiency, including economic efficiency. There are difficulties associated with the prediction of the pressure gradient under foam flow in a production tubing. This article describes a method for calculating the pressure gradient under foam flow. The results of applying this method for calculating pressure gradient in gas wells of one of the Russian fields on the final stage of development.

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Predicting permeability and gas production of hydraulically fractured tight sands from microseismic data

Geophysics ◽

10.1190/1.3278724 ◽

2010 ◽

Vol 75 (1) ◽

pp. B1-B10 ◽

Cited By ~ 30

Author(s):

Vladimir Grechka ◽

Prajnajyoti Mazumdar ◽

Serge A. Shapiro

Keyword(s):

Gas Production ◽

Hydraulic Fractures ◽

Tight Gas ◽

Hydrocarbon Production ◽

Permeability Estimation ◽

Well Stimulation ◽

Microseismic Data ◽

Production Economic ◽

Gas Fields ◽

Geometry Of Fractures

The main objective of hydraulic well stimulation is creating fractures in a tight rock that enhance its natural permeability and make hydrocarbon production economic. Because the geometry of fractures and the permeability of treated formation influence the subsequent production, their assessment is important for the development of tight-gas fields. The fracture shapes and orientations are inferred conventionally from microseismic data acquired in the process of well stimulation, but the same data also can be used to estimate the formation permeability. We have compared two techniques for permeability estimation that utilize different aspects of information contained in the observed microseismicity. We applied those techniques to data recorded in the course of the hydraulic fracturing of four wells drilled in the Pinedale Field, Wyoming, U.S.A. Then we used the obtained permeabilities to predict the gas rates from 20 treatment stages at which the number of identified microseismic events was sufficient to perform our analysis. The predictions of both techniques correlate with production and allow us to establish the characteristics of rocks and hydraulic fractures that make good producers at Pinedale.

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Assessment of the feasibility of applying an excess-profits tax from hydrocarbon production for deposits at the final stage of development

E3S Web of Conferences ◽

10.1051/e3sconf/202017705009 ◽

2020 ◽

Vol 177 ◽

pp. 05009

Author(s):

Larisa Rudneva ◽

Olga Rudenok ◽

Svetlana Larionova

Keyword(s):

Economic Performance ◽

Final Stage ◽

Comparative Assessment ◽

Oil Field ◽

Hydrocarbon Production ◽

Oil Market ◽

Stage Of Development ◽

Tax Regimes ◽

The World

The author's approaches to the feasibility of applying an excess-profits tax from hydrocarbon production to various types of deposits are reflected. The possibility of applying this tax in the operation of an oil field at the final stage of development is studied. A comparative assessment of the technical and economic performance of the field under consideration under the current and new tax regimes was carried out. Based on the modeling of scenarios for the development of the world oil market, its parameters have been determined, under which the development of the field using the new tax regime will ensure economic and budgetary efficiency.

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Effects of Well Fluids Characteristics on the Design of Offshore Gas Production System: Case Studies of Western Australian Gas Fields

Journal of the Korean Society of Mineral and Energy Resources Engineers ◽

10.12972/ksmer.2013.50.3.409 ◽

2013 ◽

Vol 50 (3) ◽

pp. 409-421

Author(s):

Jakyung Kim ◽

Dong Woo Yang ◽

Daejun Chang ◽

Jong-Se Lim ◽

Yutaek Seo

Keyword(s):

Case Studies ◽

Production System ◽

Gas Production ◽

Gas Fields ◽

Western Australian

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CAPACITY ASSESSMENT OF THE SYSTEM OF GAS PIPELINES, RECEIVING AND TRANSPORTING GAS OF INLAND PRODUCTION

EUREKA Physics and Engineering ◽

10.21303/2461-4262.2019.00831 ◽

2019 ◽

Vol 1 ◽

pp. 13-21

Author(s):

Petro Gorin ◽

Dmytro Tymkiv ◽

Viktoriia Romanova ◽

Oleksandr Filipchuk

Keyword(s):

Production System ◽

Gas Production ◽

Gas Pipeline ◽

Alternative Methods ◽

Equivalent Diameter ◽

Pipeline System ◽

Main Function ◽

Gas Pipelines ◽

Wellhead Pressure ◽

Partial Load

Today, the majority of gas fields in Ukraine are in the final stages of development, which is characterized by a significant decrease in wellhead pressure, as well as an increased gas-water factor. As is well known, when lowering wellhead pressure arises the problem of ensuring the design capacity of the gas production system as a whole. The main function of the gas pipeline system of the gas producing company of Ukraine is collection of gas from deposits and transport natural gas to consumers. Taking into account the tasks of ensuring the energy independence of Ukraine, as well as the program to build up gas of its own production, the question of assessing the capacity of the gas pipeline system remains relevant, performing the function of collection and transportation. As part of the research, the current state of the gas collection and transportation system is analyzed. The workload of gas pipeline sections in the chain from the wellhead to the consumer is investigated. As a result, it is established that the initial sections of the gas production system are fully loaded. Areas that can be recharged are identified, as a result of which it will reduce the output pressure at the wellheads and stabilize hydrocarbon production. On the basis of the conducted research, it is revealed that one of the alternative methods of increasing the capacity of the gas production system at the initial sections is to increase the equivalent diameter and length of the system by building new gas pipelines. It is also found that the periodic cleaning of pipelines in existing parts of the system prevents the decrease in capacity. It has been established that reducing the backpressure of the system is possible only in conjunction with unloading the system by changing the flow directions, creating centralized gas collection points, as well as retrofitting existing booster compressor stations. The availability of data on the load on the gas transmission system will allow the gas producing company to plan the distribution of gas to areas with available free capacity, while ensuring an increase in the production of its own gas. As a result, when the gas is distributed to areas with partial load, it will prevent excessive pressure losses in the system, as well as provide optimal system operation conditions.

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