- API Spec 7B-11C - Specification for Internal-Combustion Reciprocating Engines for Oil Field Service
- API RP 7C-11F - Recommended Practice for Installation, Maintenance, and Operation of Internal - Combustion Engines
- API RP 11AR - Recommended Practice for Care and Use of Subsurface Pumps
- API Spec 11AX - Specification for Subsurface Sucker Rod Pumps and Fittings
- API Spec 11B - Specification for Sucker Rods
- API RP 11BR - Recommended Practice for Care and Handling of Sucker Rods
- API Spec 11D1 - Specification for Petroleum and Natural Gas Industries-Downhole Equipment - Packers and Bridge Plugs
- API Spec 11E - Specification for Pumping Units
- API RP 11ER - Recommended Practice for Guarding of Pumping Units
- API RP 11G - Recommended Practice for Installation and Lubrication of Pumping Units
- API Spec 11IW - Specification for Independent Wellhead Equipment
- API Bull 11K - Bullein for Data Sheet for the Design of Air Exchange Coolers
- API RP 11L - Recommended Practice for Design Calculations for Sucker Rod Pumping Systems
- API Bull 11L2 - Bullein for Catalog of Analog Computer Dynamometer Cards
- API Bull 11L3 - Bullein for Sucker Rod Pumping System Design Book
- API Bull 11L4 - Bullein for Curves for Selecting Beam Pumping Units
- API Spec 11L6 - Specification for Electric Motor Prime Mover for Beam Pumping Unit Service
- API Spec 11N - Specification for Lease Automatic Custody Transfer (LACT) Equipment
- API RP 11PGT - Recommended Practice for Packaged Combustion Gas Turbines
- API RP 11S - Recommended Practice for Operation, Maintenance and Troubleshooting of Electric Submersible Pump Installations
- API RP 11S1 - Recommended Practice for Electrical Submersible Pump Teardown Report
- API RP 11S2 - Recommended Practice for Electric Submersible Pump Testing
- API RP 11S3 - Recommended Practice for Electric Submersible Pump Installations
- API RP 11S4 - Recommended Practice for Sizing and Selection of Electric Submersible Pump Installation
- API RP 11S5 - Recommended Practice for Application of Electric Submersible Cable Systems
- API RP 11S6 - Recommended Practice for Testing of Electric Submersible Pump Cable Systems
- API RP 11S7 - Recommended Practice for Application and Testing of Electric Submersible Pump Seal Chamber Section
- API RP 11S8 - Recommended Practice for Electric Submersible Pump System Vibrations
- API RP 11T - Recommended Practice for Installation and Operation of Wet Steam Generators
- API RP 11V2 - Recommended Practice for Gas Lift Valve Performance Testing
- API RP 11V5 - Recommended Practice for Operation, Maintenance, and Trouble-Shooting of Gas Lift Installations
- API RP 11V6 - Recommended Practice for Design of Continuous Flow Gas Lift Installations Using Injection Pressure Operated Valves
- API RP 11V7 - Recommended Practice for Repair, Testing and Setting Gas Lift Valves
- API RP 11V8 - Recommended Practice for Gas Lift System Design and Performance Prediction
- API RP 500 - Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I Division 1 and Division 2
- API RP 505 - Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1 and Zone 2