Chen Li

Chen Li

Chen Li

A consulter en ligne

Affiche du document Nonlinear flow and well test analysis in porous media

Nonlinear flow and well test analysis in porous media

Zhao Lun

2h24min00

  • Sciences formelles
192 pages. Temps de lecture estimé 2h24min.
Based on the analysis of factors influencing fluid infiltration in porous media, this book systematically summarizes the characteristics and expressions of low-velocity nonlinear flow and high-velocity nonlinear flow infiltration in porous media and provides a set of evaluation methods. Using the exponential formula, the starting pressure gradient formula, and the binomial equation of motion, the authors present a detailed comparison and analysis of the production, pressure, and dimensionless background pressure of the nonlinear flow and Darcy linear flow for steady and unsteady flow. In addition, based on the equation of motion of the starting pressure gradient, a mathematical model of the one-, two-, and three-medium nonlinear seepage flow is established, and approximate analytical solutions are given while the graph of the corresponding well test curve is drawn. Finally, based on the mathematical model of the well test established from the exponential equation of the high-velocity nonlinear flow motion, the atypical well test curve and the relational surface of the time- and space-varying infiltration index are obtained. The authors also discuss the relationship between reservoir and fluid properties and the nonlinear flow test curve. This book is intended to serve as a reference for technical personnel, researchers, teachers, and students involved in oil and gas development. Its research contents provide a theoretical basis for the identification of water flow dominant channels in the long-term water injection development of high-water-cut oilfields, profile control and water shut-off, productivity evaluation of carbonate reservoirs and formation parameters.Preface..................................................... IIICHAPTER 1Mechanism of Nonlinear Flow and Analysis of Characteristics............ 11.1 Analysis of Factors Affecting Fluid Flow in Porous Media .......... 11.2 Mechanism of Nonlinear Flowin Low Permeability Reservoirs....... 31.2.1 Characteristics of Nonlinear Flow in Low PermeabilityReservoirs........................................ 41.2.2 Model of Nonlinear Flow in Low Permeability Reservoirs ..... 61.3 Mechanisms of Stress Sensitivity in Low-Permeability Reservoirs..... 91.3.1 Stress Sensitivity Characteristics of Low-PermeabilityReservoirs........................................ 91.3.2 Stress Sensitivity Modelfor Low Permeability Reservoirs ..... 101.4 Characteristics of High-Velocity Nonlinear Flow ................. 131.4.1 Introduction....................................... 131.4.2 Characteristics of High-Velocity Nonlinear Flow ............ 151.4.3 Judgment Method for High-Velocity Nonlinear Flow ........ 171.4.4 Equation for Description of High-Velocity Nonlinear Flow .... 19CHAPTER 2Model of Low-Velocity Nonlinear Flow in Single Media ................. 252.1 Threshold Pressure Gradient Model of Low-Velocity Nonlinear Flow . . 252.1.1 Stable Flow Model.................................. 262.1.2 Unstable Flow Model................................ 262.1.3 Dimensionless Well Test Model Under Unstable Flow ........ 282.2 Exponential Model of Low-Velocity Nonlinear Flow .............. 342.2.1 Stable Flow Model.................................. 352.2.2 Unstable Flow Model................................ 372.2.3 Dimensionless Well Test Model of Unstable Flow ........... 41CHAPTER 3Theory of Well Test for Low-Velocity Nonlinear Flow in Multiple Media .... 473.1 Mathematical Model of Low-Velocity Nonlinear Flow in DoubleMedia................................................. 473.1.1 Motion Equation................................... 483.1.2 Channeling Equation................................ 483.1.3 State Equation..................................... 493.1.4 Continuity Equation................................ 503.1.5 Simplified Models of Matrix Permeability and FracturePorosity.......................................... 503.1.6 Simplified Model of Matrix Permeability ................. 523.2 Theory of Well Test of Low-Velocity Nonlinear Flow in Double Media 533.2.1 Mathematical Model of Well Test in Dual-Porosity Reservoirand Its Solution.................................... 533.2.2 Mathematical Model Considering Wellbore Storage Effectand Skin Factor.................................... 563.2.3 Characteristics of Well Test Curve of Low-Velocity NonlinearFlow in Double Media............................... 563.2.4 Analysis of Factors Affecting the Well Test Curvesof Low-Velocity Nonlinear Flow in Double Media Reservoirs . . 593.3 Mathematical Model of Low-Velocity Nonlinear Flow in TripleMedia................................................. 673.3.1 Ideal Model of Triple Media........................... 683.3.2 Mathematical Model and Its Solution for Triple MediaReservoirs........................................ 693.3.3 Well Test Curve Characteristics of Low-Velocity NonlinearFlow in Triple Media Reservoirs........................ 733.3.4 Analysis of Factors Affecting the Well Test Curvesof Low-Velocity Nonlinear Flow in Triple Media ............ 76CHAPTER 4Well Test of Nonlinear Flow Considering Stress Sensitivity in LowPermeability Reservoirs........................................ 894.1 Factors Affecting Stress Sensitivity and Mathematical Models ....... 894.1.1 Change Characteristics of Stress Sensitivity ............... 894.1.2 Factors Affecting Stress Sensitivity ...................... 924.1.3 Mathematical Model of Stress Sensitivity ................. 944.2 Nonlinear Stable and Pseudo-Stable Flow Model Considering StressSensitivity.............................................. 974.2.1 Productivity and Pressure Models of Stable Flow ConsideringStress Sensitivity................................... 974.2.2 Productivity and Pressure Models of Pseudo-Stable FlowConsidering Stress Sensitivity.......................... 974.3 Nonlinear and Unstable Well Test Considering Stress Sensitivity ..... 994.3.1 Assumptions and the Model........................... 994.3.2 Solution and Charts for Well Test Model Considering StressSensitivity in Low Permeability Reservoirs ................ 1014.4 Well Test in Fracture-Pore Double Media Considering StressSensitivity.............................................. 1084.4.1 Sensitivity of Fracture Permeability ..................... 1084.4.2 Well-Test Model of Double Media Considering StressSensitivity and Typical Curves......................... 111CHAPTER 5High-Velocity Nonlinear Stable Flow Model ......................... 1195.1 Darcy Linear Radial Flow.................................. 1195.2 Binomial Nonlinear Radial Flow ............................. 1205.3 Exponential Nonlinear RadialFlow ........................... 1225.4 Comparison of the Calculation Results for Darcy’s Linear Flowand Nonlinear Flow...................................... 1235.4.1 Producing in a Constant Production .................... 1245.4.2 Producing at a Constant Bottom-Hole Pressure ............ 129CHAPTER 6Transient Well Test Under High-Velocity Nonlinear Flow ............... 1396.1 Exponential High-Velocity Nonlinear Flow Model ................ 1396.1.1 Exponential High-Velocity Nonlinear Flow Model ........... 1396.1.2 Analytical Solution to the Exponential High-VelocityNonlinear Flow Model............................... 1416.1.3 Numerical Solution for the Exponential High-VelocityNonlinear Flow Model............................... 1446.1.4 Results and Discussion............................... 1486.2 Binomial High-Velocity Nonlinear Flow Model .................. 1526.2.1 Establishment of Flow Model.......................... 1526.2.2 Solution of the Model................................ 1536.2.3 Results and Discussion............................... 155CHAPTER 7Transient Well Test of Moving Boundary in High-Velocity Nonlinear Flow . . 1597.1 Assumptions............................................ 1597.2 Establishment and Solution ofthe Mathematical Model ........... 1607.3 Results and Discussion.................................... 161Nomenclatures............................................... 167Appendix: Virtual ArgumentInteger Bessel Function .................. 173References.................................................. 177
 Accès libre
Affiche du document Sakra : la légende des Demi-dieux

Sakra : la légende des Demi-dieux Tin lung baat bou

De Ka-Wai Kam

2h10min29

  • Action
  • Aventure
  • Drame
Royaume de Chine, Xème siècle. Deux clans ennemis s'affrontent : les Song, dynastie royale, et les Khitan, peuple nomade guerrier. Qiao Feng du clan Song est un héros chevaleresque respecté, maître en arts martiaux. Accusé à tort d'avoir tué un chef de son propre clan, Qiao Feng est banni. Pour prouver son innocence, il s’engage dans un long périple, parsemé de combats extraordinaires, entre demi-dieux et semi-démons.
 Forfait
Affiche du document Snow

Snow

Chen Li

  • Musique du monde
 Accès libre
Affiche du document Heroes : the Battle at lake Changjin

Heroes : the Battle at lake Changjin Chang jin hu

De Chen Kaige

2h49min02

  • Drame
  • Guerre / Action
  • Historique
Hiver 1950, l'armée populaire de Chine entre en Corée du Nord… Les troupes postées sur le front oriental vont combattre au lac Changjin, dans des conditions de froid extrême, n’ayant que peu de rations et accusant un important retard d’armement face à l’armée américaine menée par le général MacArthur. Avec pour seuls alliés leur volonté de fer et leur courage, les soldats chinois vont lutter au-delà de l’entendement et livrer une bataille qui restera à jamais gravée dans les mémoires.  
 Forfait

...

x Cacher la playlist

> x
     

Aucune piste en cours de lecture

 

 

--|--
--|--