Find the most up-to-date version of API RP 5C1 at Engineering API RP 5C1 specifies color-coding to indicate thickness. The color coding should consist of a paint band of the appropriate color approximately. TORQUE TABLE REVIEW 8 RD THREAD CASING Group Discussions Options: Reinstate Min. & Max. Torque Values with References to section Remove.

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The torque values listed in Table 3 apply to tubing with zinc-plated or phosphate-coated couplings. Dirty threads, or threads contaminated with coating material used as protection from corrosion.

Where external casing corrosion is known to occur or stray electrical current surveys indicate that relatively high currents are entering the well, the following practices can be employed: The following guidelines are suggested for inspection normally at the well location:. Care shall be taken to avoid crossthreading in starting these larger connections. Tubing can be damaged during shipment, at the wellsite, and during running and pulling.

Water analyses to determine the iron content before and after starting the inhibitor treatment may also serve as an indication of the comparative rates of corrosion. Information concerning safety and health risks and proper precautions with respect to par- ticular materials and conditions should be obtained from the employer, the manufacturer or supplier of that material, or the material safety data sheet.

All values are rounded to the nearest 10 ft-lb The maximum torque should be not more than percent of the selected torque. Used tubing should be classified according to loss of nominal wall thickness.

Also on repeated makeup, the threads make up more each time and interference occurs. When thorough metallurgical analysis reveals some facet of pipe quality to be involved in the failure, the results of the study should be reported to the API of? They may make into a coupling on the next makeup but would not have the anticipated joint strength and could have inadequate leak resistance.

When lacking previous experience with any of the above measures, these should be used cautiously and on a limited scale until appraised for the particular operating conditions. This may loosen the couplings at the bottom of the string.


No further reproduction is perm itted.

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

If cracks are detected in a length of pipe during inspection and are veri? Pipe body will not pass drift test One green paint band approxi- mately 2 inches wide at the point of drift restriction and adjacent to the color band denoting body wall classification. After stabbing, the casing should be rotated very slowly at? Customer 5d1 Telephone No.: As a result, unless precautions are taken welding may have adverse effects on many of the steels used in all grades of casing, especially J55 and higher.

If spinning line is used, it should pull close to the coupling. Casing and tubing wear metal loss and corrosion usually rpp on the inside surface.

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

Corrosion damage on the inside is usually caused by corrosive? To establish the correct torque for API tubing threads, make up the first few joints to the recommended values and examine the connection. Back out the connection noting torque and check threads for galling.

Care must be taken in unloading and storage. In such cases, there are certain practices that, if followed, will minimize the deleterious ai of welding.

Both the pipe thread and mating coupling thread should be inspected. Improper landing practice, which produces stresses in the threaded joint in excess of the yield point. Properly maintained, installed, and ep tongs are essential. Before loading or unloading make sure that the thread protectors are tightly in place. Both the inside and outside of casing can be damaged by corrosion, which can be recognized by the presence of pits or holes in the pipe.

Tubing inspection and handling

These values may indicate that a departure from the values listed in Table 1 is advisable. Do not jump casing out of the coupling. The function of the second pass is to temper or anneal the underlying weld and adjacent metal. Table 5—Color Code Identification Conditions Color Damaged field- or pin-end threads One red paint band approximately 2 inches wide around the affected coupling or box end. This docum ent was reproduced from an authorized download of an API standard on M ay MCR Casing and tu Therefore, in wells where leak resistance is not a great factor, minimum?


Two passes are preferred. Do not unload pipe by dropping. Performance properties should be based on a constant OD.

Compare relative position of these two makeups and use this information to determine when the joint is made up the recommended number of turns beyond hand tight. Load pipe on bolsters and tie down with suitable chain at the bolsters.

Thread galling of gall-prone materials martensitic chromium steels, 9 Cr and 19 Cr occurs during movement—stabbing or pulling rpp makeup or breakout. Every effort has been made by the Institute to assure the accuracy and reliability of 51 data contained in them; however, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss or damage resulting from its use or for the violation of any federal, state, or municipal regulation with which this publication may conflict.

Both the inside and outside of tubing can be damaged by corrosion. Shoejoint welding of couplings, when aapi, shall aip used with extreme caution and with full use of procedures outlined herein.

These inspection techniques are limited to location of cracks, pits, and other surface imperfections. These situations would require shopping of the threads to restore the length to usable status. Name As It Appears on Card: If the casing stand tilts to one side after stabbing, lift up, clean, and correct any damaged thread with a three-cornered?

Wear occurs inside casing and liners by rotation and movement of the drill string while drilling. Serious consideration should be given before using such casing in a position in the string where a heavy tensile load is imposed.

The total of the individual lengths so measured will represent the qpi length of the casing string.