scope:

SCOPE

a. This recommended practice is under the jurisdiction of the API Committee on Standardization of Drilling and Servicing Equipment.

b. This recommended practice provides recommendations for testing the frictional performance of thread compounds for rotary shouldered connections. For additional information regarding development of this recommended practice, refer to IADC/SPE 23844. All manufacturers, users and others conducting rotary shouldered connection thread compound tests in accordance with this recommended practice are encouraged to submit suggested revisions to the Director of the Production Department, American Petroleum Institute, 1201 Main Street, Suite 2535, Dallas, Texas 76202-3904.

c. Paragraphs 4.1 and 4.2 include provisions whereby a manufacturer may state on the compound label that the manufacturer's compound conforms to API Recommended Practice 7A1. One of the conditions for this is that the manufacturer shall retain the laboratory test results for review on request. API does not evaluate or validate such test reports. API does not in any way approve or make any representation or warranty with regard to a particular compound, its test results, or facilities used for such tests.

d. Conversions of U.S. customary values to International System (SI) metric units are provided throughout the text of this recommended practice in parenthesis, e.g., 6 inch (152.4 mm). The factors to be used for conversion of U.S. customary values to SI units were taken from API Publication 2564, and are listed below:

TEMPERATURE: The following formula was used to convert degrees Fahrenheit (F) to degrees Celsius (C):

e. DEFINITIONS.

Friction Factor - the ratio of the frictional performance of a compound relative to a specific reference compound. Is used as a multiplier to correct the make-up torque for rotary shouldered connections for a compound. See Section 3.

Frictional Performance - the reaction of the thread compound in combination with the test specimen as related to the coefficient of friction.

Reference Compound - a laboratory test compound formulated to produce consistent results from batch to batch that is used as a calibration standard.

Shall - is used to indicate that a provision is mandatory only when used in conjunction with the marking requirements of Section 4 of this Recommended Practice.

Should - is used to indicate that a provision is not mandatory but recommended as good practice.

May - is used to indicate that a provision is optional.

f. REFERENCED DOCUMENTS.

1. General. This specification includes by reference, either in total or in part, other API, industry, and government standards listed in Table 1.0.

2. Equivalent Standards. Other nationally or internationally recognized standards shall be submitted to and approved by API for inclusion in this specification prior to their use as equivalent standards.