Modified Mathematical Model for Fines Migration in Oil Fields

2011 ◽  
Author(s):  
Abbas Zeinijahromi ◽  
Fernando A. Machado ◽  
Pavel G. Bedrikovetsky
Keyword(s):  
Mathematical Model ◽  
Oil Fields ◽  
Fines Migration

scholarly journals A predictive model for the wettability of chalk

2020 ◽  
Vol 2 (10) ◽  
Author(s):  
Meysam Nourani ◽  
Niels Hemmingsen Schovsbo ◽  
Ashkan Jahanbani Ghahfarokhi ◽  
Carsten Møller Nielsen ◽  
Lykourgos Sigalas ◽  
...  
Keyword(s):  
Mathematical Model ◽  
North Sea ◽  
Analytical Method ◽  
Oil Fields ◽  
Laboratory Measurements ◽  
The North ◽  
Water Wettability ◽  
The North Sea ◽  
Capillary Pressure Curves ◽  
The U.S

Abstract Wettability is usually measured in special core analyses of limited plug samples according to typically costly and time-consuming procedures. For comparative purposes, wettability is considered an index. The two most frequently used wettability indices are the Amott–Harvey wettability index and the U.S. Bureau of Mines (USBM) index. The Amott–Harvey wettability index is linked to imbibition characteristics and the USBM index is associated with the area under capillary pressure curves. To provide a fast analytical method, a mathematical model for predicting the wettability of chalk is presented. The model is calibrated using experimental wettability data and subsequently applied to two wells in Danish chalk oil fields in the North Sea and to outcrop chalk samples. The model supplements traditional labor-intensive laboratory measurements and predicts water wettability variations with depth by modeling both depth and porosity dependencies; in addition, it provides estimates of the effects of the aging time and displacement temperature of chalk wettability measurements in the laboratory.

MATHEMATICAL MODEL FOR THE ANALYSIS OF OIL FIELDS (WITH GAS CAP) PRODUCTION BY THE METHOD OF WATERFLOOD CELLS

2020 ◽  
pp. 5-12
Author(s):  
I.V. Afanaskin ◽  
◽  
A.V. Korolev ◽  
A.A. Glushakov ◽  
P.V. Yalov ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Oil Fields

Mathematical Model for Fines-Migration-Assisted Waterflooding With Induced Formation Damage

SPE Journal ◽  
2013 ◽  
Vol 18 (03) ◽  
pp. 518-533 ◽  
Author(s):  
Abbas Zeinijahromi ◽  
Thi Kim Phuong Nguyen ◽  
Pavel Bedrikovetsky
Keyword(s):  
Mathematical Model ◽  
Formation Damage ◽  
Fines Migration

scholarly journals Diagnostics of the condition of sucker-rod pumping units after the analysis of dynamogram cards

2019 ◽  
Vol 298 ◽  
pp. 00137
Author(s):  
Georgy Milovzorov ◽  
Aleksei Ilyin ◽  
Pavel Shirobokov
Keyword(s):  
Mathematical Model ◽  
Control Process ◽  
Oil Fields ◽  
Centrifugal Pumps ◽  
Valve Unit ◽  
Sucker Rod ◽  
Injection Unit ◽  
Pumping Equipment ◽  
Pumping Units ◽  
The Mathematical Model

Despite of the increased share of oil wells equipped with submersible electrical centrifugal pumps, a considerable part of them is equipped and operated with sucker-rod pumping units. When operating wells with sucker-rod pumping units, different plunger pumps are used. The rod string is operated in severe environment due to long contact with highly corrosive well products and time-variant loads. Taking into account all acting loads, the diagnostics of the condition of sucker-rod pumping units is a difficult task. At the majority of oil fields in Russia, the operation of wells equipped with sucker-rod pumping units is controlled by portable and stationary dynamographs of various models. Moreover, dynamographs are used, as a rule, only to obtain images of dependence of the force on the polished piston rod upon its stroke. Based on dynamograms it is possible to find the well flow rate, pump capacity, force on the polished piston rod, etc. But one of the main problems to be solved with the help of dynamometry is the forecasting of down-hole equipment condition in the process of further operation. In this paper we overview the methods to diagnose the condition of sucker-rod pumping units based on dynamograms. The aim of the work is to develop the mathematical model to forecast the failures of down-hole pumping equipment on the results of dynamometry to automatize the control process of the unit operation. The research tasks are to analyze the existing methods for diagnosing the condition of sucker-rod pumping units, and to develop the mathematical model for forecasting the failure of the valve unit leakage. As a result, the method for forecasting the increased failure on the example of the fluid leakage in the pump injection unit is proposed. The permissible boundaries of the change in the relative force on the polished piston rod are drawn up. As a result, the failure increase is forecasted based on the frequency of the relative force on the polished piston rod getting within the interval obtained.

scholarly journals A mathematical model for identifying the fractional derivative parameter and predicting the results for the fluid flow equation in the well

2021 ◽  
pp. 72-79
Author(s):  
Темирхан Султанович Алероев ◽  
Алла Николаевна Хворова
Keyword(s):  
Mathematical Model ◽  
Fractional Derivatives ◽  
Fractured Reservoirs ◽  
Flow Equation ◽  
Oil Fields ◽  
Coefficient Of Determination ◽  
Experimental Measurements ◽  
Steady State Flow ◽  
Fluid Flow Equation ◽  
The Mathematical Model

В данной статье рассматривается идентификации параметров математической модели, основанной на дифференциальном уравнении с дробными производными. С помощью этой модели описывается установившееся течение в скважине в трещинном деформированном пласте. Рассматриваемая модель может быть использована и при разработке нефтяных месторождений с трещиноватыми коллекторами. Идентификация параметра осуществлялась с помощью оптимизации показателя качества адекватности математической модели - коэффициента детерминации. Также была представлена технология прогнозирования результатов давлений, для области, в которой не проводились экспериментальные измерения. Предлагаемая технология сопровождена расчетами. This article discusses the identification of the parameters of a mathematical model based on a differential equation with fractional derivatives. This model is used to describe the steady-state flow in a well in a fractured deformed formation. The considered model can be used in the development of oil fields with fractured reservoirs. The identification of the parameter was carried out by optimizing the quality indicator of the adequacy of the mathematical model the coefficient of determination. The technology for predicting the results of pressures was also presented, for an area in which no experimental measurements were carried out. The proposed technology is accompanied by calculations.

A Tool and Mathematical Model for Estimation of Wells Initial Water-Cut and Residual Oil Reserves on Large-Sized Oil Fields

2021 ◽  
Author(s):  
Vladimir Berezkin ◽  
Anar Sharifov ◽  
Elena Khatmullina ◽  
Evgeniy Yudin ◽  
Ildus Khatmullin
Keyword(s):  
Mathematical Model ◽  
Oil Fields ◽  
Accurate Estimation ◽  
Residual Oil ◽  
Initial Water ◽  
Oil Saturation ◽  
Oil Reserves ◽  
Production Forecasting ◽  
Intervention Planning ◽  
Water Cut

Abstract Oil production forecasting and well intervention planning require an accurate estimation of the remaining oil in place (ROIP). The problem of ROIP maps generation can be solved using commercial software; however, in the case of large fields, this requires significant computing resources and takes a big amount of time to prepare and adapt the data. Mathematical models for getting a quick solution to these issues have not been sufficiently elaborated. In this work a physical and mathematical model is proposed for building ROIP, oil saturation and water cut maps. The model was used to develop a tool for well stock managing, new wells drilling planning and detection of behind casing fluid flow by comparing the actual water cut of the well with the calculated water cut map.

scholarly journals Experiments and Simulation on a Late-Model Wind-Motor Hybrid Pumping Unit

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 994 ◽  
Author(s):  
Chunyou Zhang ◽  
Liang Wang ◽  
Hong Li
Keyword(s):  
Mathematical Model ◽  
Power Generation ◽  
Wind Energy ◽  
Wind Turbine ◽  
Wind Power ◽  
Wind Power Generation ◽  
Oil Fields ◽  
Power Generation Technology ◽  
Pumping Unit ◽  
Generation Technology

Many oil fields are full of wind energy. At present, wind power generation technology has catered to oil fields. A larger wind turbine is used to supply power to several pumping units. As a result of the structural characteristics of the pumping unit, the efficiency of the electromotor is very low, which leads to a reduction in the utilization rate of wind energy. At the same time, considering the high cost of large wind turbines, the energy saving effect is not obvious in practical applications. This paper proposes an energy supply model of a pumping unit driven by a small wind turbine and a new wind-motor hybrid structure. Instead of wind power generation technology, wind energy drives the pumping unit directly via a mechanical–hydraulic transmission system. This new mechanical-hydraulic system can optimize the power confluence of wind and electric power. To enhance the efficiency of the motor, a mathematical model and a test station were established. The correctness of the energy conservation method and the mathematical model was verified, and the performance of the wind-motor system was studied.

scholarly journals Efficiency calculation algorithm for laser bathymetry in hydrosphere based on physical & mathematical model

2021 ◽  
Vol 1 (395) ◽  
pp. 162-169
Author(s):  
A. Zavyalov ◽  
◽  
Yu. Patrakov ◽  
Keyword(s):  
Mathematical Model ◽  
Marine Environment ◽  
Analytical Methods ◽  
Oil Fields ◽  
Optical Methods ◽  
Efficiency Improvement ◽  
Calculation Methods ◽  
Calculation Algorithm ◽  
Efficiency Calculation ◽  
Offshore Oil

Object and purpose of research. Laser bathymetry, improvement and development of optical methods and instrumentation for marine environment studies. Materials and methods. Software in support of analytical methods for laser bathymetry taking into account hydrolidar parameters and probing routes. Main results. Efficiency improvement for calculation methods and demonstration of practical value for laser bathymetry in marine environment studies based on the developed physical & mathematical model. Conclusion. Calculation methods of laser bathymetry presented in this paper open new opportunities in lidar studies of marine environment at offshore oil fields of Northern seas.

Mathematical model applied to analyze development of oil fields by the method of waterflooding cells

2018 ◽  
pp. 5-11
Author(s):  
I.V. Afanaskin ◽  
◽  
A.V. Korolev ◽  
P.V. Yalov ◽  
◽  
...  
Keyword(s):  
Mathematical Model ◽  
Oil Fields
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