عنوان

Well test design & analysis

1621980936 (electronic bk.)

9781621980933 (electronic bk.)

1593702310

9781593702311

dltt

Well test design & analysis

[Book]

George Stewart.

Tulsa, Okla. :

PennWell,

c2011.

1 online resource (xxii, 1022, 37 p.) :

ill.

Some online versions lack accompanying media packaged with the printed version.

Includes bibliographical references and index.

18 Numerical Well Testing -- Numerical Techniques -- Introduction -- The finite element method -- Interaction of Geological Modeling and Well Test Interpretation -- Introduction -- Heriot-Watt fluvial reservoir project -- Geoskin concept -- Geological Object Framework -- Introduction -- Captain horizontal well -- Dual permeability with a horizontal well -- Nonintersecting fracture situations -- Shale lens problem -- Stacked channels -- Makassar Strait deepwater fields -- EPS derivative fingerprint library -- Multiple fault example -- Compartmentalized field example -- Conditional Simulation -- Interference Testing -- Introduction -- Dual permeability situations -- Vertical sealing faults with windows -- Conclusions -- Notes -- ch. 19 Layered Well Testing -- Introduction -- Direct measurement of layer pressures -- Well testing objectives -- Integration of well test interpretation and core analysis -- Commingled systems with horizontal wells -- Multilayer Convolution Algorithm -- Prediction of layer flow rates for a specified wellbore pressure history -- Two-Layer Situations -- Transient crossflow during buildup -- Early shut-in time rate transient -- Two-layer case studies -- Unequal initial pressure -- Incremental layer workover case -- Transient step-rate test (TSRT) -- Partially Bounded System -- Constant total rate drawdown -- Regime 1 Both layers infinite-acting -- Regime 2 Depletion of the bounded layer 1 -- Regime 4 Layer 2 producing alone -- Draw-down type curve -- Buildup -- Derivative diagnostics -- Three-layer Synthetic Problem -- Dual Profile Build-up Test (DPBT) -- Basic form of DPBT -- Reservoir monitoring and automatic matching -- DPBT with NGWFT dual packer complement -- Transient Step-Rate Test -- Communicating Layers -- Introduction -- Pseudo-semi-steady-state (PSSS) crossflow model -- Embedded lens of high permeability -- Geoskin -- Finite element numerical modelling -- Crossflow index -- Braided fluvial systems --

Note continued: Case II Fundamental (constant-rate) active layer response -- Well test interpretation -- Murchison field -- Vertical Interference Testing -- Observation layer response -- Effect of wellbore storage -- Vertical Interference Testing Field Data -- CDλ Type Curve -- Simulation of vertical interference tests -- Field examples -- Conclusions -- Shale Lens Model -- Notes -- ch. 11 Radial Composite Systems -- Radial Composite Systems -- Introduction -- Fundamental response -- Derivative type curves -- Build-up behavior -- Aquifer influx -- Gas block and liquid condensate dropout -- Unfavorable displacement situations -- Negative skin situation -- Geological setting for the radial composite model -- Formation damage as a radial composite -- Radial Composite with a Closed Outer Boundary -- Thermally Induced Fracturing (TIF) -- Introduction -- Rock mechanics of thermal fracturing -- Simplified model of equilibrium fracture half length -- Interpretation of pressure injection and fall-off tests -- Step-rate test (SRT) -- Fall-off Tests in Water Injection Wells -- Effect of Saturation Profile -- Displacement theory -- Determination of mobility profiles -- Determination of flood front radius, rff -- Average pressure of inner region -- Fall-off Tests in Gas Injection Wells -- Notes -- ch. 12 Horizontal Wells -- Introduction -- Flow Regimes -- Vertical radial flow -- Effect of anisotropy -- Anisotropic parallel boundary solution -- Fractured well solution -- Horizontal pseudo-radial flow -- General Solution for a Horizontal Well -- Derivative type curve -- Acidized horizontal wells -- Strip source solution -- Evaluation of the Green's function solution -- Pseudo-radial flow regime skin factor -- Vertical lateral boundaries -- Analysis Methods Based on Specialist Plots -- Early time analysis -- infinite-acting radial flow -- Derivative analysis -- Hemiradial vertical flow -- Intermediate time analysis -- linear flow regime -- Late time analysis -- horizontal pseudo-radial flow -- Build-up analysis -- Transient Deliverability -- Constant-pressure Boundary -- Layered Commingled Systems -- Theory of a near-horizontal well penetrating several layers -- Synthetic example -- Horizontal multilateral wells -- Effect of Lateral Boundaries -- Closed systems -- Dietz shape factors (CA) -- Highly Deviated (Slant) Wells -- Hydraulically Fractured Horizontal Wells -- Sinusoidal Wells -- Radial Composite Behavior -- Notes -- ch. 13 Gas Well Testing -- Theory of Gas Well Testing -- Introduction -- Linearization of the radial flow equation for a real gas -- Constant-rate inner boundary condition -- Detection of depletion -- Analysis Methods -- Constant Rate Drawdown (CRD) analysis -- Gas well field units -- Constant rate buildup (CRB) analysis -- Real gas pseudo-time ta -- Wellbore Storage in Gas Wells -- Application of Agarwal pseudo-time transformation -- Very low permeability reservoirs -- Determination of rate-dependent skin coefficient D -- Gas Reservoir Limit Testing -- Behavior of a closed gas reservoir -- Pseudo-time based on average pressure -- Reservoir limit test -- Variable (step) rate case -- Semi-steady-state gas well deliverability -- Simulated extended drawdown -- Analytic simulation option -- Step-rate Transient (SRT) Test -- Methodology and test objectives -- Variable rate drawdown (VRD) plot for gas wells -- Prediction of the SSS deliverability of development wells -- North Sea gas well test field example -- Design of Step-rate Tests -- Isochronal Testing and its Limitations -- Reserves Proven by a Gas Well Test -- Notes -- ch. 14 Automatic Model Matching -- Introduction -- Structure of fundamental (CSFR) pD functions or models -- Interpretation methodology -- Storage and interrogation of tabulated dimensionless responses -- Real-time Convolution -- Introduction -- Ideal wellbore storage and skin -- Nonideal wellbore storage -- Time-dependent skin and wellbore storage coefficient -- Application to gas wells -- Automatic Matching -- Nonlinear regression -- Model selection -- Selection of data points -- Advantages and disadvantages of nonlinear regression -- Production Analysis: Prediction of Production Decline -- Transient deliverability -- Fractured well example -- Fetkovich approximation -- Semi-steady-state depletion -- Closed system pD functions -- Notes -- ch. 15 Two Cell Compartmentalized Systems -- Extended Drawdown Behavior -- Period of negligible support -- Time to reach total system semi-steady-state -- Dimensionless form of the material balance support -- Superposition of material balance effect in a closed system -- Late time drawdown derivative type curve -- Analysis methods on the Cartesian graph -- Extended Build-up Behavior -- Derivative diagnostic -- Exponential approach region -- Analysis of transient and semi-infinite-acting period -- Build-up analysis by desuperposition -- Build-up derivative type curve -- Synthetic Example -- Total System Productivity Index -- Effect of a Poor Cement Bond -- Reservoir Engineering Aspects of Compartmentalization -- Field Examples -- Further Field Examples -- Katnook field -- Middle East carbonate -- Notes -- ch. 16 Well Test Design -- Introduction -- Background to test design -- Permeability estimate -- Review of seismic data -- Decision to Test or Not -- Objectives of the Test -- General objectives -- Skin cleanup -- Enhanced objectives -- Obtaining a permeability estimate -- Completion design -- Forecasting of development well deliverability -- Estimation of accessible hydrocarbon -- Tubing diameter selection -- Design Criteria -- Based on the depth of investigation -- Based on the duration of the wellbore storage effect -- Wireline shut-in tools (SITs) -- Based on the removal of tidal effects -- Low-permeability systems -- Incorporation of production logging -- Role of Simulation in Test Design -- Application of a nodal analysis package -- Role of analytical well test simulation -- Gauge selection and location -- Permanent downhole gauges -- Special Considerations for Gas Wells -- Classification of gas reservoirs -- Step-rate test design -- Design calculations related to wellbore storage -- Role of analytical simulation -- Rate control -- Problem of well cleanup -- Turner critical velocity -- Example gas well test design -- Estimation of reserves -- First gas well field example -- Second gas well field example -- Fractured wells -- Limitation on test rate due to environmental considerations -- Wellhead temperature constraints -- Compositional simulation -- Extremely high permeability -- Testing of the completion -- Testing of gas condensate wells -- Modern DST Testing Systems -- Separator selection -- Multiphase flow measurement -- Fluid disposal -- Notes -- ch. 17 Multiphase Flow -- Introduction -- Linearization of the Continuity Equation -- Steady-state two-phase pseudopressure -- Radius of drainage -- Pseudopressure integrals -- Diffusivity Equation in Terms Of Two-Phase Pseudopressure -- Two-phase compressibility and pseudotime -- Two-phase material balance -- Analytical Solutions to the Linearized System -- Case where the reservoir pressure is above the dew point -- Analytical solutions in terms of two-phase pseudopressure -- Comparison with numerical simulation results -- Gas condensate well test methodology -- Reservoir pressure below the dew point -- Generation with a Pressure-dependent Viscosity Compressibility Product -- Sampling in Gas Condensate Systems -- Theory of Perrine and Martin -- Steady-state pseudopressure for solution gas drive -- Transient flow in solution gas drive -- Semi-steady-state depletion -- Build-up analysis in solution gas drive -- Case Studies -- Arun field -- Cupiagua field -- North Rankine field -- Britannia field -- Non-Darcy Flow in Gas Condensate Well Tests -- Raghavan et al. Field Examples -- Numerical Simulation of Gas Condensate Well Tests -- Barrios and Osorio studies -- Role of compositional modeling -- Notes -- ch.

Note continued: Development of crossflow modelling using partial productivity indices -- Design and simulation of workover treatments -- Synergistic Interpretation of Layered Well Tests -- Integration of core analysis data -- Effective flowing interval -- Upscaling core and log permeability data -- Natural fracturing -- Hydraulic Flow Units (HFUs) -- Introduction -- Fundamental theory -- Hydraulic unit zonation process -- Field examples from clastic reservoirs -- Permeability prediction from core and log data -- Siberian field example -- Alternative lumped parameter approach -- Distributed Pressure Surveys -- Notes -- ch. 20 Deconvolution in PTA -- Introduction -- Convolution of a Variable Rate Response -- Iseger Algorithm -- Numerical Laplace Transformation -- Step Rate Schedules -- Deconvolution of a Variable Rate Response -- Application of Deconvolution -- Determination of reservoir volume -- Further Simulated Test Problems -- Gas well testing -- Application to Wireline Formation Testing -- Mini-DST -- Depth of Investigation -- Real-time Deconvolution -- Permanent Downhole Gauge (PDG) Data -- Build-up Analysis -- Partial Datasets -- Synthetic deconvolution -- Two-Cell Compartmentalized Systems -- Gas Well Testing -- Shell field example -- Notes.

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Well test design & analysis.

9781593702311

Well test design and analysis.

Oil wells-- Testing.

Stewart, George,1940-

Knovel (Firm)

20131119112956.0

[Book]

Y