Data Analysis and Updated Screening Criteria for Polymer Flooding Based on Oilfield Data

2014 ◽  
Vol 17 (01) ◽  
pp. 15-25 ◽  
Author(s):  
Laila Dao Saleh ◽  
Mingzhen Wei ◽  
Baojun Bai
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
New Technologies ◽  
Data Cleaning ◽  
Polymer Flooding ◽  
Oil Viscosity ◽  
Data Set ◽  
Screening Criteria ◽  
The World

Summary Enhanced-oil-recovery (EOR) screening is considered the first step in evaluating potential EOR techniques for candidate reservoirs. Therefore, as new technologies are developed, it is important to update the screening criteria. Many of the screening criteria regarding polymer flooding that have been described in the literature were based on data collected from EOR surveys of the Oil and Gas Journal. However, the data quality has not been addressed in previous research. The data set originally contained 481 polymer-flooding projects from around the world, and it contained some problems, including outliers and duplicate, inconsistent, and missing data. To ensure the quality of the data set before running analyses, boxplots and crossplots were used to detect and identify data problems. After detecting outliers and deleting duplicate and severely inconsistent data records, only 250 projects remained. Both graphical and statistical methods were used to analyze and describe the results of the data set. Two major sets of information were given after data cleaning: The first was that the majority distribution of each parameter was shown by use of a histogram distribution, and the second was that the range of each parameter and some of its statistical values were presented by use of a boxplot. Finally, the screening criteria are presented on the basis of these statistics and the defined data parameters. The developed criteria were compared with previously published criteria, and their differences were explained. The developed criteria show that a polymer-flooding project can be successfully applied in a reservoir with a temperature of less than 210°F, an oil viscosity up to 5,000 cp, and gravity lower to 12°API.

Analytic Method on the Quality of Microbial Enhanced Oil Recovery Based on Fuzzy-AHP

2011 ◽  
Vol 345 ◽  
pp. 233-238 ◽  
Author(s):  
Nai Bo Zhang ◽  
Chen Guang Xue
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Freezing Point ◽  
Fuzzy Ahp ◽  
Weight Vector ◽  
Relative Importance ◽  
Microbial Enhanced Oil Recovery ◽  
Oil Viscosity ◽  
Screening Criteria

Analyzed the evaluation of microbial enhanced oil recovery quality based on the Fuzzy AHP. Obtained the relative importance weight vector which affect the qualities (or factors) through the Fuzzy AHP. The Fuzzy AHP of microbial enhanced oil recovery in order to evaluate the quality as for example, discovered the factors of Evaluation of microbial enhanced oil recovery quality from the relative importance of factors: Under 50°C the high glial oil viscosity reduced 20%, lower the freezing point of high wax 2.2°C. This result is consistent with microbial enhanced oil recovery reservoir screening criteria proposed by the U.S. oil and energy.

Financial and Economic Support of Innovation Processes in the Russian Fuel and Energy Complex

2019 ◽  
Vol 12 (3) ◽  
pp. 77-85
Author(s):  
L. D. Kapranova ◽  
T. V. Pogodina
Keyword(s):  
Oil Recovery ◽  
Large Scale ◽  
Oil And Gas ◽  
New Technologies ◽  
Innovative Development ◽  
Oil Reserves ◽  
Energy Complex ◽  
Innovation Activities ◽  
Substantial Investment ◽  
The Government

The subject of the research is the current state of the fuel and energy complex (FEC) that ensures generation of a significant part of the budget and the innovative development of the economy.The purpose of the research was to establish priority directions for the development of the FEC sectors based on a comprehensive analysis of their innovative and investment activities. The dynamics of investment in the fuel and energy sector are considered. It is noted that large-scale modernization of the fuel and energy complex requires substantial investment and support from the government. The results of the government programs of corporate innovative development are analyzed. The results of the research identified innovative development priorities in the power, oil, gas and coal sectors of the fuel and energy complex. The most promising areas of innovative development in the oil and gas sector are the technologies of enhanced oil recovery; the development of hard-to-recover oil reserves; the production of liquefied natural gas and its transportation. In the power sector, the prospective areas are activities aimed at improving the performance reliability of the national energy systems and the introduction of digital technologies. Based on the research findings, it is concluded that the innovation activities in the fuel and energy complex primarily include the development of new technologies, modernization of the FEC technical base; adoption of state-of-the-art methods of coal mining and oil recovery; creating favorable economic conditions for industrial extraction of hard-to-recover reserves; transition to carbon-free fuel sources and energy carriers that can reduce energy consumption and cost as well as reducing the negative FEC impact on the environment.

An Easy Calculation Method on Sweep Efficiency of Chemical Flooding

2013 ◽  
Vol 275-277 ◽  
pp. 496-501
Author(s):  
Fu Qing Yuan ◽  
Zhen Quan Li
Keyword(s):  
Oil Recovery ◽  
Orthogonal Design ◽  
Polymer Flooding ◽  
Water Flooding ◽  
Solution Viscosity ◽  
Chemical Flooding ◽  
Oil Viscosity ◽  
Sweep Efficiency ◽  
Easy Calculation ◽  
Polymer Compound

According to the geological parameters of Shengli Oilfield, sweep efficiency of chemical flooding was analyzed according to injection volume, injection-production parameters of polymer flooding or surfactant-polymer compound flooding. The orthogonal design method was employed to select the important factors influencing on expanding sweep efficiency by chemical flooding. Numerical simulation method was utilized to analyze oil recovery and sweep efficiency of different flooding methods, such as water flooding, polymer flooding and surfactant-polymer compound flooding. Finally, two easy calculation models were established to calculate the expanding degree of sweep efficiency by polymer flooding or SP compound flooding than water flooding. The models were presented as the relationships between geological parameters, such as effective thickness, oil viscosity, porosity and permeability, and fluid parameters, such as polymer-solution viscosity and oil-water interfacial tension. The precision of the two models was high enough to predict sweep efficiency of polymer flooding or SP compound flooding.

scholarly journals Evaluation of an alkali-polymer flooding technique for enhanced oil recovery in Trinidad and Tobago

2020 ◽  
Vol 10 (8) ◽  
pp. 3947-3959
Author(s):  
Kyle Medica ◽  
Rean Maharaj ◽  
David Alexander ◽  
Mohammad Soroush
Keyword(s):  
Trinidad And Tobago ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Energy Demand ◽  
Xanthan Gum ◽  
Net Present Value ◽  
Flow Characteristics ◽  
Absorption Capacity ◽  
Polymer Flooding ◽  
Screening Criteria

Abstract Trinidad and Tobago (TT) is seeking to develop more economical methods of enhanced oil recovery to arrest the decline in crude oil production and to meet the current and future energy demand. The utilization of alkaline-polymer flooding to enhance oil recovery in TT requires key studies to be conducted to obtain critical information of the flooding system (soil type, additive type, pH, adsorption characteristics and rheological (flow) characteristics). Understanding the role of, interplay and optimizing of these variables will provide key input data for the required simulations to produce near realistic projections of the required EOR efficiencies. The parameters of various wells in TT were compared to the screening criteria for alkali-polymer flooding, and the EOR 4 well was found to be suitable and thus selected for evaluation. Laboratory adsorption studies showed that the 1000 ppm xanthan gum flooding solution containing 0.25% NaOH exhibited the lowest absorption capacity for the gravel packed sand and exhibited the lowest viscosity at all the tested shear rates. The lowest adsorption was 2.27 × 10−7 lbmole/ft3 which occurred with the 1000 ppm xanthan gum polymer containing 0.25% NaOH, and the evidence showed that the polymer was adsorbed on the other side of the faults, indicating that it has moved further and closer to the producing well. Implementation of an alkali polymer flooding resulted in an incremental increase in the recovery factors (~ 3%) compared to polymer flooding; however, a change in the oil recovery as a function of the alkaline concentration was not observed. The simulated economic analysis clearly shows that all the analysed EOR scenarios resulted in economically feasible outcomes of net present value (NPV), Internal Rate of Return (IRR) and payback period for oil price variations between $35 and $60 USD per barrel of oil. A comparison of the individual strategies shows that the alkali-polymer flood system utilizing 0.25% sodium hydroxide with 1000 ppm xanthan gum is the best option in terms of cumulative production, recovery factor, NPV, IRR and time to payback.

scholarly journals Selected Approaches to the Business Environment Evaluation

2015 ◽  
Vol 63 (2) ◽  
pp. 515-523 ◽  
Author(s):  
Helena Chládková
Keyword(s):  
Czech Republic ◽  
World Bank ◽  
New Technologies ◽  
Technological Development ◽  
Business Environment ◽  
The Czech Republic ◽  
Doing Business ◽  
The World Bank ◽  
The World

This paper contains views of managers on the quality of business environment and also reflects the results of the World Bank, which annually assesses the conditions for doing business in different countries, including the Czech Republic. The business environment of the Czech Republic was evaluated based upon the results of the World Bank, which assesses conditions for doing business in various parts of the world. Secondly, views of SME managers on the quality of the business environment were presented. The World Bank’s „Doing Business 2011“ report puts the Czech Republic in the 63rd place (out of 183 examined countries) when it comes to the quality of the business environment. The Czech Republic improved its score in two categories (Property Registration and Ending a Business) compared to the same evaluation conducted in 2010. SME managers evaluated the business environment with SWOT Analysis. „Technical and technological development along with increase in demand for innovated products made by new technologies“ was perceived as the most significant opportunity (82%) while „Competition and rivalry in the industry“ was identified as the most significant threat by almost all respondents (92%) in their 2010 evaluation.

scholarly journals RESEARCH OF THE MECHANISM OF OIL RECOVERY FROM HYDROCARBON DEPOSITS WITH LOW PERMEABILITY RESERVOIRS

2020 ◽  
Vol 17 (34) ◽  
pp. 892-904
Author(s):  
Zinon A KUANGALIEV ◽  
Gulsin S DOSKASIYEVA ◽  
Altynbek S MARDANOV
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
New Technologies ◽  
High Viscosity ◽  
Economic Feasibility ◽  
Oil Field ◽  
Low Permeability ◽  
Low Grade ◽  
Oil Reserves ◽  
Low Permeability Reservoirs

The main part of Russia's hard-to-recover reserves is 73% for low-grade and carbonate reservoirs, 12% for high-viscosity oil, about 15% of extensive sub-gas zones of oil and gas deposits and 7% of reservoirs lying at great depths. The development of such stocks with the usage of traditional technologies is economically inefficient. It requires the application of new technologies for their development and fundamentally new approaches to design, taking into account the features of extraction of hard-to-extract reserves (HtER). The purpose of this research is to find ways to improve the performance of low-permeability reservoirs. To accomplish this task, the Novobogatinsk South-Eastern Oil Field has been taken as an example and described. The necessary properties of production facilities in the field are highlighted, along with economic feasibility and technological efficiency. The reserves involved in the development are determined and, thanks to the knowledge of the geological oil reserves of the deposits, the potential oil recovery factor is calculated with the existing development technology. As a result of the research, development options were worked out with the results of the calculation of design indicators for the field as a whole. The comparison of oil recovery schedules and ORI, as well as the layout of wells, have been presented. As a result of the study, a description of 3 options for the development of design indicators for the field as a whole is given. The figures show oil production graphs, as well as location patterns. The authors of the study conclude which of the recommended development options can help extract maximum oil reserves.

Diffusivity of Gas Into Bitumen: Part II—Data Set and Correlation

SPE Journal ◽  
2019 ◽  
Vol 24 (04) ◽  
pp. 1667-1680 ◽  
Author(s):  
W. D. Richardson ◽  
F. F. Schoeggl ◽  
S. D. Taylor ◽  
B.. Maini ◽  
H. W. Yarranton
Keyword(s):  
Oil Recovery ◽  
Oil Viscosity ◽  
Data Set ◽  
Gas Concentration ◽  
Recovery Processes ◽  
Gas Diffusivity ◽  
Constant Diffusivity ◽  
Mixture Viscosity ◽  
Gaseous Hydrocarbons

Summary The oil-production rate of in-situ heavy-oil-recovery processes involving the injection of gaseous hydrocarbons partly depends on the diffusivity of the gas in the bitumen. Data for gas diffusivities, particularly above ambient temperature, are relatively scarce because they are time consuming to measure. In this study, the diffusion and solubilities of gaseous methane, ethane, propane, and n-butane in a Western Canadian bitumen were measured from 40 to 90°C and pressures from 300 to 2300 kPa, using a pressure-decay method. The diffusivities were determined from a numerical model of the experiments that accounted for the swelling of the oil. In Part I of this study (Richardson et al. 2019), it was found that both constant and viscosity-dependent diffusivities could be used to model the mass of gas diffused and the gas-concentration profile in the bitumen; however, the constant diffusivity was different for each experiment and mainly depended on the oil viscosity. In this study, a correlation for the constant diffusivity to the oil viscosity is developed as a tool to quickly estimate the gas diffusivity. A correlation of diffusivity to the mixture viscosity is also developed for use in more-rigorous diffusion models. The maximum deviations in the mass diffused over time predicted with the constant and viscosity-dependent (mixture viscosity) correlations at each condition are on average 7.4 and 8.7%, respectively.

Shareholder rights, telecommunications and director attendance around the world

2019 ◽  
Vol 32 (2) ◽  
pp. 221-235
Author(s):  
John Nowland
Keyword(s):  
Emerging Markets ◽  
Annual Reports ◽  
Shareholder Rights ◽  
Data Set ◽  
Content Type ◽  
Telecommunications Infrastructure ◽  
Corporate Decisions ◽  
The World ◽  
Director Liability

Purpose This study aims to document the variation in director attendance rates around the world and investigate the influence of cross-country differences in law and infrastructure on director attendance practices. Design/methodology/approach Director attendance data are hand-collected from company annual reports and are related to differences in shareholder rights, director liability and transportation and telecommunications infrastructure across countries. Findings Using a hand-collected data set of 4,344 directorships from 33 countries, the results indicate that director attendance is significantly lower in emerging markets and is positively related to the extent of shareholder rights and the quality of telecommunications infrastructure. Originality/value For policymakers and shareholders, the findings of this study indicate that there is substantial variation in director attendance practices around the world. Across all markets, director attendance is higher when the telecommunications infrastructure better enables the potential for virtual attendance, thereby allowing directors to participate in meetings when they cannot be physically present. In emerging markets, director attendance is also higher where there is a stronger emphasis on shareholder rights, highlighting an avenue for improved director attendance by strengthening shareholder involvement in major corporate decisions.

Geochemical Monitoring of Formation Fluids for Reservoir Management Considering Complicating Factors in Mature Oilfields

2021 ◽  
Author(s):  
Mariya Sergeevna Shipaeva ◽  
Danis Karlovich Nurgaliev ◽  
Artem Aleksandrivich Zaikin ◽  
Vladislav Anatolevich Sudakov ◽  
Artur Albertovich Shakirov ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
New Technologies ◽  
Produced Water ◽  
Point Of View ◽  
Geochemical Monitoring ◽  
Digital Revolution ◽  
Stage Of Development ◽  
Modern Development ◽  
Geochemical Studies

Abstract At the present stage of the hydrocarbon production process, most of the unique and largest fields in the world are at a late stage of development. Despite the active development and policy of a decarbonised economy, the demand for liquid and gaseous hydrocarbons remains high, while of inevitably growing the number of mature fields. The Volga-Ural oil and gas province today is an old oil and gas producing region, most of the fields have already entered the final stage of development. However, through the introduction and development of new technologies for oil extraction, monitoring of production and localization of reserves, the life of the fields can be extended. One of these technologies is geochemical monitoring of well production. Its goal is to optimize the development of mature fields on the basis of promptly obtained information about the state of the wells using geochemical studies of the formation fluid, allowing timely implementation of the necessary measures. Geochemical studies allow identifying the source of fluid entering the well, determining a violation in the wellbore structure, checking the tightness of downhole equipment for separate operation, and performing an area analysis of the area development efficiency. This type of research is relevant both in giant fields with a large stock of production wells, often characterized from a geological point of view by multilayer structure, with technological complexity, packing, wear of equipment and strings, in some cases the impossibility of running gauge for research, and in fields with low depletion. The possibilities of geochemistry for solving local operational problems in wells are shown. Several hydrogeological complexes have been studied, the change in the properties of the produced water during the development process is described. The concepts of the geochemical conditions in the hydrocarbon deposits that existed earlier are changing due to the development of these objects as a dynamic system, continuous injection of different types of water into the reservoir, the use of enhanced oil recovery methods and other technogenic impact associated with the development of reserves. The digital revolution and the modern development of the industry marked the beginning of the creation of the Digital Atlas of Groundwater, the development of specialized algorithms that allow processing large amounts of data.

Supporting open data: the key role of data managers

2021 ◽  
Author(s):  
Alice Fremand
Keyword(s):  
Data Management ◽  
Data Science ◽  
New Technologies ◽  
Open Data ◽  
Research Data ◽  
Complex Data ◽  
Data Set ◽  
Data Publication ◽  
World Data ◽  
The World

<p>Open data is not a new concept. Over sixty years ago in 1959, knowledge sharing was at the heart of the Antarctic Treaty which included in article III 1c the statement: “scientific observations and results from Antarctica shall be exchanged and made freely available”. ​At a similar time, the World Data Centre (WDC) system was created to manage and distribute the data collected from the International Geophysical Year (1957-1958) led by the International Council of Science (ICSU) building the foundations of today’s research data management practices.</p><p>What about now? The WDC system still exists through the World Data System (WDS). Open data has been endorsed by a majority of funders and stakeholders. Technology has dramatically evolved. And the profession of data manager/curator has emerged. Utilising their professional expertise means that their role is far wider than the long-term curation and publication of data sets.</p><p>Data managers are involved in all stages of the data life cycle: from data management planning, data accessioning to data publication and re-use. They implement open data policies; help write data management plans and provide advice on how to manage data during, and beyond the life of, a science project. In liaison with software developers as well as scientists, they are developing new strategies to publish data either via data catalogues, via more sophisticated map-based viewer services or in machine-readable form via APIs. Often, they bring the expertise of the field they are working in to better assist scientists satisfy Findable, Accessible, Interoperable and Re-usable (FAIR) principles. Recent years have seen the development of a large community of experts that are essential to share, discuss and set new standards and procedures. The data are published to be re-used, and data managers are key to promoting high-quality datasets and participation in large data compilations.</p><p>To date, there is no magical formula for FAIR data. The Research Data Alliance is a great platform allowing data managers and researchers to work together, develop and adopt infrastructure that promotes data-sharing and data-driven research. However, the challenge to properly describe each data set remains. Today, scientists are expecting more and more from their data publication or data requests: they want interactive maps, they want more complex data systems, they want to query data, combine data from different sources and publish them rapidly.  By developing new procedures and standards, and looking at new technologies, data managers help set the foundations to data science.</p>

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