1 May API RP 5C1 (R). Recommended Practice for Care and Use of Casing and Tubing. standard by American Petroleum Institute, 05/01/ 26 Jul API/PETRO RP 5C1-ENGL Recommended Practice for Care and Use of Casing and Tubing. Upstream Segment. 10 Oct GB Tubulars has developed this Recommended Practice for Casing on API RP 5C1 – “Recommended Practice for Care and Use of Casing.

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When lengths of tubing are inadvertently dragged in the dirt, the threads should be recleaned and ser- viced again as outlined in 5. Immediately before running, remove protectors from both field end and coupling end and clean threads thoroughly, repeating as additional rows become uncovered.

Back out the connection noting torque and check threads for galling.

Care must be taken in unloading and storage. Protection criteria for casing differ somewhat from the criteria used for line pipe.

API RP 5C – Care and Use of Casing and Tubing_百度文库

Physical properties are checked and each length hydrostatically tested, normally to only 3, psi in the plain end unthreaded condition. Inhibitor effectiveness may be checked also by means of caliper surveys, visual examinations of readily accessible pieces of equipment, and water analyses for iron content. To determine the value and effectiveness of the above practices and measures, cost and equipment-failure records can be compared before and after application of control mea- sures.


No further reproduction is perm itted. Various nondestructive inspection services have been employed by users to ensure that the desired quality of tubing is being run. International standards for tubing. Enviado por Wagner flag Denunciar.

However, the makeup torque may vary depending on the thread coatings and lubricant type; thus, adjustments in 5c torque values are sometimes required. The compound is a mixture of metallic and graphite powders uniformly dispersed in a grease base.

Follow the API recommended tubing makeup torque for nonupset, external-upset, and integral-joint tubing. Evaluation procedures for casing and tubing connections tests to be performed to determine the galling tendency, sealing performance, and structural integrity of tubular connections, especially for high-pressure application are under study. The operating personnel should ensure that good practices are followed.

Ordinarily, pumping wells should be tubed as close to bot- tom as practical, regardless of the position of the pump, to minimize the damage to the casing from corrosive fluids.

Use of power tongs is necessary to obtain consistent makeup torque. Inspection of tubing when received and following use are important to ensure that defects or wear do not prevent the tubing from performing as designed. Used tubing should be classified according to loss of nominal wall thickness.

Tubing inspection and handling –

There should be no excessive heat, approximately two turns beyond the hand-tight position with all threads buried. Used tubing frequently requires inspection. The total of the aoi lengths so measured will represent the unloaded length of the tubing string.


Where conditions favorable to corrosion exist, a qualified corrosion engineer should be con- sulted. The actual length under tension in the hole can be obtained by consulting graphs that are prepared for this purpose and are available in most pipe handbooks.

The color coding should consist of a paint band of the appropriate color approximately 2 in. Use this section to list papers in OnePetro that a reader who wants to learn more should definitely read.

API RP 5C1 Recommended Practice for Care and Use of Casing and Tubing

Literature on external casing corrosion or persons competent in this field should be consulted for proper protection criteria. For specialty connections, consult with the manufacturer on the proper 5c compound. In flowing wells, packing the annulus with fresh water or low-salinity alkaline muds.

Tubing can be damaged during shipment, at the wellsite, and during running and pulling. Some users have found that, for a limited number of critical well applications, these procedures do not result in tubing suffi- ciently free of defects to meet apo needs for such critical applications.

The tubing should be handled with thread protectors, which are not removed, until the tubing is ready to stab. In view of this practice, it is suggested that the individual user: