9780878148257

An update of the PennWell classic nontechnical guide to logging techniques, this text provides an easy to understand overview of the technically complex subject of well logging.

David E. Johnson, BSME, University of Tennessee, now retired, worked for Schlumberger Well Services for more than 25 years, serving for more than 8 years as a Senior Sales Engineer in Tulsa, Oklahoma. Johnson is a registered Professional Engineer in Oklahoma, an active member of SPWLA and SPE, and has published technical papers on log interpretation Kathryne E. Pile is a business process analyst for Williams Communications in Tulsa, Oklahoma. Prior to working for Williams, she served as editorial director for PennWell Books and was a technical writing instructor at The University of Tulsa. She continues to prvide technical editing service on a consultant basis for professional societies such as the American Association of Petroleum Geologists and the Society of Exploration Geophysicists

Acknowledgments	p. xi
A Word to the Reader	p. xii
Introduction to Logging	p. 1
Why Do We Run Logs?	p. 2
Who Uses Logs and Why?	p. 4
Reading Logs	p. 7
The Header	p. 7
Main Log Section	p. 10
Vertical Scale	p. 10
Horizontal Scale	p. 12
Inserts	p. 19
Repeat Section	p. 20
Calibrations	p. 20
Comprehension Check	p. 20
Formation Parameters	p. 25
Types of Sediments	p. 25
Porosity	p. 27
Intergranular Porosity	p. 27
Other Types of Porosity	p. 30
Formation Analysis	p. 30
Shaly Formations	p. 32
Reserves Estimate	p. 34
Invasion	p. 35
Resistivity	p. 39
Direct vs. Indirect Measurements	p. 39
Water Saturation	p. 40
Mud Logging	p. 45
Rate of Penetration and Lag	p. 45
Measuring ROP	p. 46
Interpreting ROP from the Mud Log	p. 47
Lag	p. 48
Gas Detection	p. 49
Gas Detectors	p. 50
Analyzing Returns	p. 51
Measuring and Recording the Readings	p. 52
Interpretations	p. 55
Collecting Samples	p. 56
Sample Description	p. 57
Show Evaluation	p. 58
Identification	p. 58
Porosity	p. 59
Permeability	p. 59
Hydrocarbon Ratio Analysis	p. 59
Application	p. 59
Resistivity Measurement	p. 61
Induction Tools	p. 64
Focused Electric Logs	p. 68
Electric Logs	p. 71
Spontaneous Potential	p. 73
Microresistivity Tools	p. 77
Micrologs	p. 77
Microlaterologs	p. 78
Microspherically Focused Logs	p. 79
Porosity Measurements	p. 81
Cores	p. 82
Subatomic Interactions	p. 83
Gamma--Ray Logs	p. 87
Density Logs	p. 89
Interpretation--Density Log	p. 91
Compensated Neutron Log	p. 95
Interpretation--Compensated Neutron Log	p. 95
Sonic Log	p. 98
Interpretation--Sonic Log	p. 100
Multiple Porosity Logs	p. 101
Quick-and-Dirty Crossplot Porosity	p. 106
Putting It All Together	p. 113
Questions to Ask Before Reading a Log	p. 113
Reading a Log	p. 114
BVW[subscript min], Quick-Look Method	p. 115
Sample Prospect Evaluation	p. 117
Detailed Interpretation	p. 125
Sargeant 1-5 Example	p. 127
Gulf Coast Example	p. 138
Computer-Generated Logs Interpretations	p. 145
Wellsite Computer Logs	p. 146
Computing Center Logs	p. 152
Dielectric Constant Logs	p. 156
Interpretation	p. 157
Magnetic Resonance Logs	p. 160
Interpretation	p. 162
Beyond Water Saturation	p. 165
Wellsite Seismic Techniques	p. 165
Check Shots	p. 167
Synthetic Seismograms	p. 167
Vertical Seismic Profiling	p. 169
Determining Dip	p. 171
Imaging Logs	p. 176
Formation Testing	p. 179
Drillstem Testing	p. 179
Wireline Formation Testing	p. 182
Formation Cores	p. 183
Logging Measurements While Drilling	p. 185
Logs for Air-Drilled Holes	p. 186
Epithermal Neutron Log	p. 186
Temperature Log	p. 187
Noise Log	p. 187
Through-Drillpipe Logging	p. 187
Completion Logs	p. 189
Cementing the Casing	p. 192
Two-Stage Cementing Jobs	p. 193
Measuring Volume of Cement	p. 193
Correlation Logs	p. 194
Gamma-Ray/CCL Tools	p. 195
Cement Evaluation Logs	p. 197
Conditions That Affect CBL Interpretations	p. 202
Pulse Echo Tools	p. 205
Ultrasonic Cement Evaluation Tools	p. 206
Remedial Cementing	p. 209
Perforating for Production	p. 211
Monitoring the Well and Reservoir	p. 215
Production Logs	p. 215
Common Well Problems	p. 216
Crossflow	p. 217
Premature Breakthrough	p. 217
Mechanical Problems	p. 217
Underproduction	p. 217
The Complexities of Production Analysis	p. 218
Multiphase Flow	p. 219
Production Logging Tools	p. 221
GR and CCL Tools	p. 223
Temperature Tools	p. 223
Flowmeters	p. 223
Manometers	p. 226
Differential Manometer	p. 226
Holdup Meters	p. 228
Pulsed Neutron Tools	p. 229
Radioactive Tracer	p. 229
Example Production Log	p. 231
Remedial Operations	p. 234
Casing Inspection Tools	p. 234
Casing Potential Tools	p. 236
Acoustic Imaging Tools	p. 236
Magnetic Flux Leakage Tool	p. 236
Multifinger Calipers	p. 238
Remedial Operations	p. 238
Through-Casing Formation Evaluation Tools	p. 238
Nuclear Physics and Through-Casing Tools	p. 239
GR Spectrometry	p. 241
CNL Log	p. 241
Acoustic Tools	p. 241
Density Tools	p. 241
Pulsed Neutron Spectrometry Tools	p. 242
Pulsed Neutron Decay Rate Tools	p. 242
Monitoring the Reservoir	p. 243
A Final Note	p. 245
Afterword	p. 247
Glossary	p. 249
Nomenclature	p. 261
Subscripts	p. 261
Symbols	p. 263
Index	p. 265
Table of Contents provided by Syndetics. All Rights Reserved.

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Well Logging in Nontechnical Language

0878148256

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