API 80 : 2000

RECOMMENDED PRACTICE, GUIDELINES FOR THE DEFINITION OF ONSHORE GAS GATHERING LINES

American Petroleum Institute

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1 GENERAL
      1.1 Purpose and Scope
      1.2 Background
      1.3 How to Use this Recommended Practice
2 DEFINITIONS
      2.1 General Discussion
      2.2 Definition of Onshore Gathering Line
      2.3 Definition of Production Operation
      2.4 Supplemental Definitions
      2.5 Decision Trees
      2.6 Commentary on Development of Definitions
3 REPRESENTATIVE APPLICATIONS
      3.1 Applications of 'Production Operation' Concepts
      3.2 Applications of 'Gathering Line' Concepts
APPENDIX A - ONSHORE GAS GATHERING DECISION TREES
APPENDIX B - APPLICATIONS
Figure 2-1 - Gas Processing is Not a Pipeline Function
Figure 2-2 - Gas Treatment is a Distinct Function on Many
             Gathering Systems
Figure 2-3 - The Gathering Function Commingles Gas from
             Different Sources
Figure 2-4 - Gathering Lines Often Have Multiple Compressors
             in Series
Figure 2-5 - Gathering Extends to the Furthermost Downstream
             Endpoint
Figure 2-6 - Incidental Gathering Downstream of an Identified
             Endpoint
Figure A-1 - Onshore Gas Gathering Decision Tree -
             Alternative 1
Figure A-2 - Onshore Gas Gathering Decision Tree -
             Alternative 2
Figure B-1 - Examples of Common Gas Production and Gathering
             Operations
Figure B-2 - Alternative 1 Decision Tree for Figure B-1
             (Scenario A)
Figure B-3 - Alternative 2 Decision Tree for Figure B-1
             (Scenario A)
Figure B-4 - Alternative 1 Decision Tree for Figure B-1
             (Scenario B)
Figure B-5 - Alternative 2 Decision Tree for Figure B-1
             (Scenario B)
Figure B-6 - Alternative 1 Decision Tree for Figure B-1
             (Scenario C)
Figure B-7 - Alternative 2 Decision Tree for Figure B-1
             (Scenario C)
Figure B-8 - Example of a Central Production Facility With
             Satellites
Figure B-9 - Alternative 1 Decision Tree for Figure B-8
Figure B-10 - Alternative 2 Decision Tree for Figure B-8
Figure B-11 - Typical Appalachian Production Operation and
              Gas Gathering Applications
Figure B-12 - Alternative 1 Decision Tree for Figure B-11
Figure B-13 - Alternative 2 Decision Tree for Figure B-11
Figure B-14 - Example of a Gas Gathering System with Multiple
              Compressors
Figure B-15 - Alternative 1 Decision Tree for Figure B-14
Figure B-16 - Alternative 2 Decision Tree for Figure B-14
Figure B-17 - Example of a Gas Gathering System With Fuel Gas
              Return Lines
Figure B-18 - Alternative 1 Decision Tree for Figure B-17
              (Gas Return Lines)
Figure B-19 - Alternative 2 Decision Tree for Figure B-17
              (Gas Return Lines)
Figure B-20 - Alternative 1 Decision Tree for Figure B-17
              (Production Gathering)
Figure B-21 - Alternative 2 Decision Tree for Figure B-17
              (Production Gathering)
Figure B-22 - Example of Gas Gathering Systems With Different
              Ownership and in Multiple States

Abstract

Developed by an Industry Coalition which includes representatives from over twenty petroleum industry associations, providing a functional description of onshore gas gathering pipelines for the sole intent of supplying users with a practical guide determining the application of the definition of gas gathering in the federal Gas Pipeline Safety Standards, 49 CFR Part 192, and state programs implementing these standards.