Gaswell Testing: Theory, Practice & Regulation

ISBN-13: 9780934634120 / Angielski / Miękka / 1981 / 218 str.

David A. T. Donohue; T. Ertek

Opis

Introduction 1 1. Conventional & Isochronal Tests 5 1. 1 Derivation of Fundamental Flow Equation 6 1. 2 Conventional Test 10 1. 3 Isochronal Test 13 1. 4 Modified Isochronal Test 17 2. Additional Testing Options 23 2. 1 Pseudopressure (Real Gas Potential) Treatment for Gas Flow 24 2. 2 The Radial Diffusivity Equation for Gas Flow 31 2. 3 Analytical Solution of the Diffusivity Equation 33 2. 4 Flow Regimes 34 2. 5 Skin Factor 36 2. 6 Turbulent Flow Factor 40 2. 7 Drawdown or Falloff Test 41 2. 8 Buildup Test 43 2. 9 Determination of S, S' and 0 from Buildup and Drawdown Tests 47 53 3. Additional Testing Considerations 3. 1 Surface-Pressure Relationships 54 Stabilization Time and Radius of Investigation 62 3. 2 Choice of Flow Rates and Duration of Flow Rates 64 3. 3 3. 4 Well bore Storage Effects 65 3. 5 Production of Liquids 66 3. 6 Single-Point Test 68 3. 7 The Orifice Meter 68 3. 8 Testing Equipment 74 76 3. 9 Measurement, Sampling, and Safety in Testing 81 4. Procedures & Regulations 4. 1 Interstate Oil Compact Commission Procedures 83 4. 2 State of Texas Regulations 99 4. 3 State of Oklahoma Regulations 102 4. 4 State of New Mexico Regulations 109 4. 5 State of Louisiana Regulations 123 4. 6 Province of Alberta Regulations 124 vi Gaswell Testing 5. Field Test & Interpretation 127 6.

Spis treści

1. Conventional & Isochronal Tests.- 1.1 Derivation of Fundamental Flow Equation.- 1.2 Conventional Test.- 1.3 Isochronal Test.- 1.4 Modified Isochronal Test.- 2. Additional Testing Options.- 2.1 Pseudopressure (Real Gas Potential) Treatment for Gas Flow.- 2.2 The Radial Diffusivity Equation for Gas Flow.- 2.3 Analytical Solution of the Diffusivity Equation.- 2.4 Flow Regimes.- 2.5 Skin Factor.- 2.6 Turbulent Flow Factor.- 2.7 Drawdown or Falloff Test.- 2.8 Buildup Test.- 2.9 Determination of S, S? and D from Buildup and Drawdown Tests.- 3. Additional Testing Considerations.- 3.1 Surface-Pressure Relationships.- 3.2 Stabilization Time and Radius of Investigation.- 3.3 Choice of Flow Rates and Duration of Flow Rates.- 3.4 Wellbore Storage Effects.- 3.5 Production of Liquids.- 3.6 Single-Point Test.- 3.7 The Orifice Meter.- 3.8 Testing Equipment.- 3.9 Measurement, Sampling, and Safety in Testing.- 4. Procedures & Regulations.- 4.1 Interstate Oil Compact Commission Procedures.- 4.2 State of Texas Regulations.- 4.3 State of Oklahoma Regulations.- 4.4 State of New Mexico Regulations.- 4.5 State of Louisiana Regulations.- 4.6 Province of Alberta Regulations.- 5. Field Test & Interpretation.- 6. Exercises.- Nomenclature & Units.- Appendix A.- Derivation of the Continuity Equation.- Appendix B.- Analytical Solution of the Diffusivity Equation.- Appendix C.- Skin Due to Restricted Entry.- Appendix D.- Determination of Gas Supercompressibility Factor and Viscosity.- Appendix E.- Orifice Coefficients.- Appendix F.- Sample Data Reporting Forms.