Within the petroleum production industry, there has been a scarcity of performance data based on field experience in the use of sucker rods. Most of the data available have been based on laboratory tests conducted in air or in synthetic brines; these data are then adjusted to compensate for the more stringent requirements encountered in the field service for sucker rods.

Realizing the need for field performance data on sucker rods, NACE Unit Committee T-1F on Metallurgy of Oilfield Equipment assigned the project to Task Group T-1 F-11 to prepare a recommended procedure for the testing of mixed strings of sucker rods which would give useful performance data. This testing method can be applied to both steel and reinforced plastic sucker rods.

The NACE Group Committee on Corrosion Control in Petroleum Production (T · 1) issues this standard which describes a testing procedure that has been used to compare the performance of different types and grades of sucker rods in the same environment. This test procedure is commonly called a "mixed string test."

1.1 This standard (test method) can be used to evaluate the performance of the classes, types, or special designs of sucker rod couplings and sucker rods.

1.2 This test method describes the procedure for testing sucker rods in field service to compare the performance of different types and grades of sucker rods in the same environment and under essentially the same dynamic conditions.

 Historical Document 1989