API RP 5C1
Recommended Practice for Care and Use of Casing and Tubing
|Publication Date:||1 March 1980|
a. This recommended practice is under the jurisdiction of the API Committee on Standardization of Tubular Goods.
NOTE: No provision of this recommended practice shall be cause for rejection of casing or tubing provided the threads are in accordance with the requirements of API 8td 5B.
b. The statements on corrosion of casing and tubing as given herein, were developed with the cooperation of the Technical Practices Committee on Corrosion of Oil and Gas Well Equipment, National Association of Corrosion Engineers.
c. It is suggested that the selection of a thread compound for casing and tubing be given careful consideration by the user, bearing in mind that a satisfactory compound should possess certain properties, the major of which are (1) to lubricate the thread surfaces to facilitate joint make-up and break-out without galling, and (2) to seal voids between the mating thread surfaces and effectively prevent leakage. Compounds which have given outstanding service for casing and tubing under both laboratory and field conditions are described in API Bul 5A2: Bulletin on Thread Compounds.
NOTE: Thread Compounds described in Bul 5A2 should not be used on rotary shouldered connections.
d. Some generalized suggestions on prevention of damage to casing and tubing by corrosive fluids are given herein (Par. 1.30-p and 2.34-0). It is not, however, within the scope of this bulletin to provide detailed suggestions for corrosion control under specific conditions. Many variables may be involved in a specific corrosion problem and interrelated in such a complex fashion as to require detailed attention to the specific problem. For more complete technical information on specific corrosion problems, the user should consult the official publication of the National Association of Corrosion EngineelPS, CORROSION, or contact: Chairman, Technical Practices Committee on Corrosion of Oil and Gas Well Equipment, T-1, NACE, 2400 West Loop South, Houston, Texas 77027.
e. This recommended practice may be used by anyone desiring to do so, and every effort has been made by the Institute to assure the accuracy and reliability of the data .obtained. However, the Institute makes no representation, warranty, or guarantee in connection with the publication of any API recommended practice and hereby expressly disclaims any liability or responsibility for loss or damage resulting from their use, for any violation of any federal, state, or municipal regulation with which an API recommended practice may conflict, or for the infringement of any patent resulting from the use of an API recommended practice.