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API (American Petroleum Institute) is a leader in the development of petroleum and petrochemical equipment and operating standards covering topics that range from drill bits to environmental protection. These embrace proven, sound engineering and operating practices and safe, interchangeable equipment and materials. Many have been incorporated into state and federal regulations and adopted by ISO for worldwide acceptance.
Specification for Downhole Well Test Tools and Related Equipment
Standard published on 1.1.2022
Selected format:Subsurface Completion Isolation (Barrier) Valves and Related Equipment
Standard published on 1.9.2022
Selected format:Facilities Systems Completion Planning and Execution
Standard published on 1.7.2013
Selected format:Protocol for Verification and Validation of High-pressure High-temperature Equipment
Standard published on 1.3.2013
Selected format:Manual of Petroleum Measurement Standards Chapter 2.2A Measurement and Calibration of Upright Cylindrical Tanks by the Manual Tank Strapping Method
Standard published on 1.11.2019
Selected format:Manual of Petroleum Measurement Standards Chapter 2—Tank Calibration Section 2B—Calibration of Upright Cylindrical Tanks Using the Optical Reference Line Method
Standard published on 1.10.2019
Selected format:Manual of Petroleum Measurement Standards Chapter 2-Tank Calibration Section 2C-Calibration of Upright Cylindrical Tanks Using the Optical-triangulation Method
Standard published on 1.4.2013
Selected format:Manual of Petroleum Measurement Standards Chapter 2—Tank Calibration Section 2D—Calibration of Upright Cylindrical Tanks Using the Internal Electrooptical Distance-ranging Method
Standard published on 1.1.2021
Selected format:Petroleum and Liquid Petroleum Products - Calibration of Horizontal Cylindrical Tanks Part 1: Manual Methods
Standard published on 1.8.2014
Selected format:Petroleum and Liquid Petroleum Products-Calibration of Horizontal Cylindrical Tanks Part 2: Internal Electro-optical Distance-ranging Method
Standard published on 1.9.2014
Selected format:Latest update: 2025-07-21 (Number of items: 2 209 006)
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