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A new approach to predict the formation pressure using multiple regression analysis: Case study from the Sukharev oil field reservoir – Russia

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Journal of King Saud University - engineering Sciences 2024年第8期36卷 694-700页

作者： Ponomareva, Inna N. Martyushev, Dmitriy A. Kumar Govindarajan, Suresh Department of Oil and Gas Technologies Perm National Research Polytechnic University Perm614990 Russia Petroleum Engineering Programme Department of Ocean Engineering Indian Institute of Technology – Madras Chennai India

Formation pressure is an important indicator of field production potential. Currently, the common practice to estimate reservoir pressure is the hydrodynamic exploration test. This method requires shutting down the well, often for a long time. Such long shutdowns lead to less production from the reservoir and worsen the economics of the field. Here, we present the method for determining the pressure without shutting down the well by using statistical methods for such tasks. In this article, we describe the method of finding the formation pressure by using multidimensional multivariate analysis of the actual reservoir data from the Sukharev field. To build the model, several operational, geological, and reservoir properties at various stages of the field pressure were combined into a model to predict reservoir pressure. Results showed that with this simple statistical method, formation pressure varies in two distinctive stages. In the first stage, the formation pressure is influenced by the reservoir petrophysical parameters, whereas in the second stage, operational parameters were more prominent. Finally, three separate formations in the Sukharev field were examined to predict reservoir pressure, and the results were in very good agreement with the actual measured data. This confirmed that the method was practical and capable of predicting reservoir pressure at any time of the well's lifetime. © 2022 The Authors

关键词： Regression analysis

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Development and study of a visco-elastic gel with controlled destruction times for killing oil wells

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Journal of King Saud University - engineering Sciences 2022年第7期34卷 408-415页

作者： Martyushev, Dmitriy A. Govindarajan, Suresh Kumar Department of Oil and Gas Technologies Perm National Research Polytechnic University Perm614990 Russia Petroleum Engineering Programme Department of Ocean Engineering Indian Institute of Technology Madras Chennai India

Well killing remains to be the critical technological stage before proceeding with workover operations. Well killing using Visco-Elastic Gel (VEG) has been found to preserve and reinstate the filtration characteristics of bottom-hole formation zone efficiently. Since, these methods exclude the possibility of penetration of well-killing fluids into the reservoirs, the natural permeability of the reservoir retained. In this article, the authors have reported for the first time about a new VEG with controlled fracture times that remains appropriate for killing oil wells associated with both terrigenous carbonate reservoir operations. A distinctive feature of the proposed technology using a VEG with adjustable degradation times (can vary from 3 to 120 h) is that it requires a relatively smaller volumes of the composition in comparison with that of the conventional technologies. As a result, a significant reduction in the negative impact on the reservoir is achieved resulting from a relatively low penetrating ability of the proposed VEG. High structural properties of the VEG make it possible to reliably block the overlapped reservoir interval and it excludes the penetration of process fluid into the reservoir. In addition, it also eliminates the flow of formation fluid from the reservoir, which is absolutely necessary for trouble-free repairing work. It was found from the present study that the use of a breaker of a particular, single type does not provide the desired results and in the present study, the authors have deduced a relatively complex breaker based on peroxyhydrate and citric acid with a 1:1 ratio. The introduction of the encapsulated peroxyhydrate at the stage of preparation of the VEG ensures monodispersity of its dispersion characteristics. The developed VEG was successfully tested in 32 wells of oil fields in the Perm Krai fields in Russia. The well killing technology developed and described in this article using a VEG with adjustable destruction times ha

关键词： petroleum reservoir engineering

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The Study of the Integration Between Pectin and Sodium Dodecyl-Sulfate on Oil Recovery

The Study of the Integration Between Pectin and Sodium Dodec...

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2024 SPE Nigeria Annual International Conference and Exhibition, NAIC 2024

作者： Musa, M.S.M. Adam, N.H.B. Gbonhinbor, J.R. Ridzuan, N. Mahat, S.Q.A. Yakasai, F. Ngouangna, E.N. Oseh, J.O. Agi, A. Oil and Gas Engineering Programme Faculty of Engineering Universiti Malaysia Sabah Jalan UMS Sabah Kota Kinabalu Malaysia Department of Petroleum Engineering Niger Delta University Wilberforce Island Bayelsa State Amassoma Nigeria Faculty of Chemical and Process Engineering Technology College of Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pahang Gambang Malaysia Department of Chemical and Petroleum Engineering Faculty of Engineering Bayero University Kano Nigeria Department of Petroleum Engineering School of Chemical and Energy Engineering Faculty of Engineering Universiti Teknologi Malaysia Johor Bahru Malaysia

ISBN: (纸本)9781959025474

Surfactant flooding is a recognized technique within the realm of chemical enhanced oil recovery (CEOR), to enhance oil recovery in cases of continual depletion in conventional oil reserves. This method has a track record of effectively increasing oil recovery rates. The process involves multiple factors, including the reduction of interfacial tension (IFT), alterations in wettability, the creation of foam, and emulsification. Despite its success, a primary concern associated with surfactant flooding is the emergence of increased fingering effects, resulting in conformance issues like excessive water production. The primary objective of this research is to examine the interaction between pectin and sodium dodecyl sulfate (SDS) in the context of oil recovery, assessing the collaborative potential of pectin in conjunction with SDS to amplify oil production, and evaluating the impact of sodium chloride (NaCl) salinity on the behaviour of pectin and SDS in the context of oil recovery. To address water production concerns, this study employs polymer to augment water viscosity. The interaction between pectin and SDS will be scrutinized by observing three distinct sand packs, each containing surfactant, polymer, and a surfactant-polymer combination, respectively. The findings indicated significant improvements in oil recovery using different enhanced oil recovery (EOR) techniques. Freshwater flooding resulted in a 15% increase in oil recovery compared to saltwater flooding. Polymer flooding with a concentration of 0.6 wt% demonstrated the highest efficacy of 77.85% improvement in oil recovery compared to waterflooding. Surfactant flooding, while slightly less effective than polymer flooding, but still showed a remarkable 48.94% increase in oil recovery after waterflooding. However, surfactant flooding's effectiveness could be constrained by factors like reservoir characteristics and fluid properties. Despite this, the study revealed that combining surfactant and polymer fl

关键词： Surface active agents

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Application of integrated petroleum reservoir study for intervention and field development program in western onshore field, India

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Egyptian Journal of petroleum 2017年第4期26卷 981-994页

作者： Baskaran, Vijai Kumar Govindarajan, Suresh Kumar Dani, Kamal Chandra Kumar, Mandhir Department of Ocean Engineering Petroleum Engineering Programme Indian Institute of Technology-Madras Chennai 600036 India Shelf Drilling Abu Dhabi 307501 United Arab Emirates Oil and Natural Gas Corporation Ltd. (ONGC) Ahmedabad 380005 India

In this research, an integrated reservoir study is performed in the J#Field (J-Oil Field) of western onshore, India to evaluate its additional reserves expectations and implement field developments plan using waterflood pilot program. The target strata includes two formations of Paleogene, which is about 3600 ft, namely G#Fm (G-Formation) of the Eocene and T#Fm (T-Formation) of Oligocene, subdivided into 11 zones. Based on these results, an attempt was made to construct of an optimization plan to exploit it, taking into account that the field is producing since 1947, with a cumulative production of 183.5 MMbbl and an overall recovery factor of 28% until January 2016. On the basis of the potential evaluation and geological modeling, blocks J48 and J45 were simulated, and the remaining oil distribution characteristics in two blocks were studied after history match. The work includes the stratigraphic studies, seismic study, logging interpretation, sedimentary facies modeling, three dimensional geological modeling, simulations for waterflooding, and future field development plans. © 2016 Egyptian petroleum Research Institute

关键词： Field development Integrated reservoir study Reservoir characterization Reservoir simulation Sedimentary facies models Waterflood pilot program

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CO2 Adsorption-breakthrough Study on Activated Carbon derived from Renewable Oil Palm Empty Fruit Bunch

CO2 Adsorption-breakthrough Study on Activated Carbon derive...

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8th International Conference on Researches in engineering, Technology and Sciences (ICRETS)

作者： N.S.Nasri Husna M.Zain Hamza D.Usman Zulkifli Abd.Majid Zalilah Sharer Nurul Ania Sazali Nur Liyana Anirman Sustainability Waste-To-Wealth Unit UTM-MPRC Oil and Gas InstituteEnergy Research AllianceUniversiti Teknologi Malaysia Department of Renewable Energy Engineering Faculty of Petroleum and Renewable Energy EngineeringUniversiti Teknologi Malaysia Department of Chemical Engineering Faculty of Chemical EngineeringUniversiti Teknologi Malaysia Chemical Engineering Programme Abubakar Tafawa Balewa University

The emissions of CO gas lead to the severe environmental pollution especially global warming's *** order to minimize the negative impacts from the emission of CO gas,it is necessary to filter and separate the *** paper was aimed to synthesize activated carbon from agricultural waste material（EFB） by using basic agent（KOH） and CO activation and to determine the adsorption rate and breakthrough of the CO gas on the different type treatment of activated ***-char was produced via carbonization process and then activated through chemical treatment and CO *** physical characterization of the samples were investigated by using nitrogen adsorption and scanning electron microscopy（SEM） and Fourier transform infrared spectroscopy（FT-IR） which was used to study the surface chemical ***,adsorption column breakthrough experiment is conducted on the activated carbon prepared while commercial activated carbon（AC） was used as *** time for KOH-impregnated AC,commercial AC and KOH-impregnated AC with CO activation were 3s,3s and *** on the results,KOH impregnated-AC showed longer breakthrough time compared to KOHimpregnated AC with CO activation,which means that KOH-impregnated AC have better performance for CO adsorption and equivalent to the commercial *** conclusion,results showed that the EFB base-porous carbon sorbent prepared by carbonization and chemical activation process is a good adsorbent for CO adsorption.

关键词： Empty fruit bunch Activated carbon Carbon dioxide gas Breakthrough

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Assessment of porous carbons derived from sustainable palm solid waste for carbon dioxide capture

Assessment of porous carbons derived from sustainable palm s...

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作者： Nasri, Noor S. Hamza, Usman D. Ismail, Siti N. Ahmed, Murtala M. Mohsin, Rahmat Sustainability Waste-to-Wealth Unit UTM-MPRC Oil and Gas Institute Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia Chemical Engineering Programme Abubakar Tafawa Balewa University Tafawa Balewa Way Bauchi Bauchi state Nigeria Chemical Engineering Department Faculty of Chemical Engineering Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia Gas Engineering Department Universiti Malaysia Pahang Lebuhraya Tun Razak 26300 Gambang Kuantan Pahang Malaysia Department of Chemical Engineering Faculty of Engineering University of Maiduguri P.M.B. 1069 Maiduguri Borno Nigeria Faculty of Petroleum and Renewable Energy Engineering Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia

Potentials of solid agro-wastes from palm processing mills (palm kernel) for producing low cost porous carbons were investigated. The study deals with the use of palm kernel shell based porous carbons as adsorbents for CO 2 capture. Carbonization of the palm kernel shell (PKS) was carried out at 700 °C followed by CO2 activation. The porous carbons were characterized using Fourier transform infrared spectroscopy (FTIR), thermogravimetric and derivative thermogravimetric (TG/DTA) analysis, scanning electron microscopy (SEM), proximate analysis, ultimate analysis and nitrogen adsorption tests. The adsorption equilibrium of CO2 on palm kernel shell activated carbon was measured using a static volumetric technique. Adsorption of CO2 on the porous carbons was conducted at 30 °C for pressures up to 4 bars. The equilibrium data were simulated using the Freundlich and Langmuir isotherms, with both models having R2 > 0.98. The experimental kinetic data was fitted to the pseudo-first-order, pseudo-second-order and Elovich equations, while the adsorption mechanism was evaluated using the Webber-Moris intra-particle diffusion model. Higher CO 2 uptake of 7.32 mmol/g was obtained for PAC (palm kernel activated carbon) at 30 °C and 4 bars. PAC adsorbed 23.52 kg CO2/t PKS. The findings revealed the potential of palm shell as a viable and sustainable biomass for preparation of activated carbon for gas adsorption applications. © 2014 Elsevier Ltd. All rights reserved.

关键词： Activated carbon

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Experimental studies of sand production from unconsolidated sandstone Niger-Delta petroleum reservoir

Experimental studies of sand production from unconsolidated ...

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Society of petroleum Engineers Nigeria Annual International Conference and Exhibition 2011

作者： Adeyanju, O.A. Oyekunle, L.O. Chemical Engineering Department Petroleum and Gas Engineering Programme University of Lagos Nigeria

ISBN: (纸本)9781618390943

Sand production from Nigeria's Niger-Delta oil and gas reservoir has been simulated with a physical model. The model can accommodates both unconsolidated and consolidated sandstone cores. The objective was to determine the ability of using the flow rate to control the production of sand. Results show that the sand production is both affected by the flow rates, the confining pressure, the drawdown and the viscosity of the formation fluid. High sand-free flow rates can be achieved if the sand formation is mechanically confined (compacted). The grain size distribution of the produced sand in the laboratory is identical to that of the field sample. At high confining pressure only small sand sizes are produced from the porous medium. In case of water and light crude oil sand production can be controlled by managing the flow rate while it is impossible to control sand production from heavy crude oil formation by managing the flow rate alone. According to the confining pressure results, shallow formation results in larger sand production than those in deeper wells. Copyright 2011, Society of petroleum Engineers.

关键词： Sand

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Hydrocarbon flow simulations in porous and permeable media using finite element analyses and discrete fracture network

Hydrocarbon flow simulations in porous and permeable media u...

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Society of petroleum Engineers Nigeria Annual International Conference and Exhibition 2011

作者： Farayola, K.K. Oluokun, M.T. Adeniyi, V.O. Fakinlede, O.A. Petroleum and Gas Engineering Programme Department of Chemical Engineering University of Lagos Nigeria Department of Chemical Engineering University of Lagos Nigeria Department of Systems Engineering University of Lagos Nigeria

ISBN: (纸本)9781618390943

Naturally fractured reservoirs, NFR are distinguished from the conventional reservoirs by the discontinuities in porous media. Prediction of non-Newtonian fluid flow behaviour in NFR is a challenging work in petroleum engineering. Large quantities of hydrocarbons are present in NFR in different regions of the world. The discontinuities in porous media have complicated the description of the petrophysical structures and the fluid flow in fractured porous and permeable media. This study uses discrete fracture network, DFN to explicitly model the flow of fluids through the fractures. In this study, hydrocarbons are treated as non-Newtonian which is the case with waxy or heavy crude oils. Multiphase fluid flow models in porous media are frequently used in many important applications of Earth Sciences, such as in ground water contamination, subsurface remediation and reservoir modeling, Diaz-Vera et al. (2008). The same is true for single-phase flow in porous media. This simulation is carried out using Carreau viscosity model and power law model to describe the relationship between viscosity and shear rate. The simulation is implemented with finite element analysis software, the COMSOL Multiphysics. The results obtained are compared with reference results of Newtonian flow. The influence of viscosity function on the shear rate is weaker in power-law than in Carreau model. Some other characteristic results along with appropriate analysis are presented. Copyright 2011, Society of petroleum Engineers.

关键词： Hydrocarbons

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Thermodynamics prediction of wax precipitation using the Patel-Teja equation of state

Thermodynamics prediction of wax precipitation using the Pat...

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作者： Farayola, K.K. Adeboye, Y.B. Adekomaya, O.A. Olatunde, A.O. Petroleum and Gas Engineering Programme Department of Chemical Engineering University of Lagos Nigeria Department of Chemical Engineering University of Lagos Nigeria

ISBN: (纸本)9781617388835

Flow assurance is a problem which plagues the petroleum industry. The purpose of this study is to predict wax precipitation in crude oil pipelines. The industry spends millions of dollars to remediate this problem. As a result, ways are being sought to reduce the occurrence of the phenomenon by predicting as accurately as possible, the wax appearance temperature, which is a very important parameter when analysing the problem of wax precipitation. Experimental methods have been employed in times past, but in recent times, thermodynamic modeling of wax formation allows better prediction of wax deposition in pipelines. A three parameter equation of state, the Patel-Teja EOS is used to describe the non-ideality of the liquid phase (oil) while the UNIQUAC model is used to describe the solid phase (wax). Solid precipitation is measured as temperature drops below the wax appearance temperature. The introduction of the third parameter increases the accuracy of results. The results from this study are in agreement with observations made by Pedersen et al. (1995) and Lira Galeana et al. (1996). This study has shown that the Patel-Teja EOS gives better predictions of wax precipitation when compared with the Peng Robinson EOS. This paper is based on theoretical data only. Accurate prediction of wax precipitation reduces loss time, maintenance cost and production loss due to shut-in. Although a kinetic model is required to estimate the wax deposition rate, accurate thermodynamics model is a key requirement for both wax deposition and precipitation calculations as the kinetics is being controlled by the thermodynamics driving force. The thermodynamic model proves successful and compares favourably with results obtained from the experimental data. © 2010, Society of petroleum Engineers.

关键词： Forecasting

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