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MCR Casing and tu With respect to particular circumstances, local, state, and federal laws and regulations should be reviewed. API is not undertaking to meet the duties of employers, manufacturers, or suppliers to warn and properly train and equip their employees, and others exposed, concerning health and safety risks and precautions, nor undertaking their obligations under local, state, or federal laws.

Information concerning safety and health risks and proper precautions with respect to particular 55c1 and conditions should be obtained from pai employer, the manufacturer or supplier of that material, or the material safety data sheet.

Nothing contained in any API publication is to be construed as granting any right, by implication or otherwise, for the manufacture, sale, or use of any method, apparatus, or product covered by letters patent. Neither should anything contained in the publication be construed as insuring anyone against liability for infringement of letters patent.

Spi, API standards are reviewed and revised, reaf?

Sometimes a one-time extension of up to two years will be added to this review cycle. This publication will no longer be in effect? This document was produced under API standardization procedures that ensure appropriate noti? Questions concerning the interpretation of the content of this standard or comments and questions concerning the procedures under which this standard was developed should be directed in writing to the general manager of the Upstream Segment, American Petroleum Institute, L Street, N.

Requests for permission to reproduce or translate all or any part of the material published herein should also be addressed to the general manager. API standards are published to facilitate the broad availability of proven, sound engineering and operating practices. These standards are not intended to obviate the need for applying sound engineering judgment regarding when and zpi these standards should be utilized.

The formulation and publication of API standards is not apj in any way to inhibit anyone from pai any other practices. Any manufacturer marking equipment or materials in conformance with the marking requirements of an API standard is solely responsible for complying with all the applicable requirements of that standard. API does not represent, apu, or guarantee that such products do in fact conform to the applicable API standard.

No part of this work may be reproduced, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission from the publisher. This standard is under the jurisdiction of the API Committee on Standardization of Tubular Goods and includes items approved by the letter ballot through API publications may be used by anyone desiring to do so.

Every effort has been made by the Aapi to assure the accuracy and reliability of the data contained in them; however, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims 5v1 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 con?

Suggested revisions are invited and should be submitted to the general manager of the Upstream Segment, American Petroleum Institute, L Street, N.

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 the latest edition of API Standard 5B. Compounds that have given outstanding service for casing and tubing under both laboratory and? Thread compounds described in the latest edition of API Bulletin 5A2 should not be used on rotary shouldered connections.

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It is not, however, within the scope of this recommended practice to provide detailed suggestions for corrosion control under speci? Many variables may be involved in a speci? For more complete technical information on speci? BoxHouston, Texas Some users have found that, for a limited number of critical well applications, these procedures do not result in casing suf? Various nondestructive inspection services have been employed by users to ensure that the desired quality of 1American Welding Society, N.

BoxMiami, Florida In view ali this practice, it is suggested that the individual user: Familiarize himself with inspection practices speci? Casing should be handled at all times on racks or on aip or metal surfaces free of rocks, sand, or dirt other than normal drilling mud. When lengths of casing are inadvertently dragged in the dirt, the threads should be recleaned and serviced again as outlined in 4. Both spider and elevator slips should be clean and sharp and should?

Slips should be extra long for heavy casing strings. The spider must be level. Slip and tong marks are injurious. Every possible effort should be made to keep such damage at a minimum by using proper up-todate equipment. If they lower unevenly, there is danger of denting the pipe or badly slip-cutting it. Tongs may be sized to produce 1. Tongs should be examined for wear on hinge pins and hinge surfaces. The 55c1 line attachment to the backup post should be corrected, if necessary, to be level with the tong in the backup position so as to avoid uneven load distribution on the gripping surfaces of the casing.

The length of the backup line should be such as to cause minimum bending stresses on the casing and to allow full stroke movement of apu makeup tong. Immediately before running, remove thread protectors from both? Carefully inspect the threads. Those found damaged, even slightly, should be laid aside unless satisfactory means are available for correcting thread damage.

The length of each piece of casing shall be measured prior to running. A steel tape calibrated in decimal feet millimeters to the nearest 0.

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

The measurement xpi be made from the outermost face of the coupling or box to the position on the externally threaded end where the coupling or the box stops when the joint is made up power tight. On round-thread joints, this position is to the plane of the vanish point on 5cc1 pipe; on buttress-thread casing, this position is to the base of the triangle stamp on the pipe; and on extreme line casing, this position is to the shoulder on the externally threaded end.

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

Check each coupling for makeup. If the standoff is abnormally great, check the 5v1 for tightness. Tighten any loose couplings after thoroughly cleaning the threads and applying fresh compound over entire thread surfaces, and before pulling the pipe into the derrick.

API RP 5C1 Archives – Production Technology

Before stabbing, liberally apply thread compound to the entire internally and externally threaded areas. It is recommended that a thread compound that meets the performance objectives of API Bulletin 5A2 be used; however, in special cases where severe conditions are encountered, it is recommended that high-pressure silicone thread compounds as speci?

Place a clean thread protector on the? Several thread protectors may be cleaned and used repeatedly for this operation. If a mixed string is to be run, check to determine that appropriate casing will be accessible on the pipe rack when required according to program. Connectors used as tensile and lifting members should have their thread capacity carefully checked to ensure that the connector can safely support the load.


Care should be taken when making up pup joints and connectors to ensure that the mating threads are of the same size and type. Casing that will not pass the drill test should be laid aside. Use rope snubber if necessary.

Avoid hitting casing against any part of derrick or other equipment. Provide a hold-back rope at window. The brush or utensil used in applying thread compound should be kept free of foreign matter, and the wpi should never be thinned. Stab vertically, preferably with the assistance of a man on the stabbing board. If the casing stand tilts to one side after stabbing, lift up, clean, and correct any damaged thread with a three-cornered?

After stabbing, the casing should be rotated very slowly at? If spinning line is used, it should pull close to the coupling. For recommendations on makeup of casing with spinning lines and conventional tongs, see 4.

Because of this, it is essential that torque be related to madeup position as outlined in 4. The torque values apii in Table 1 apply to casing with zinc-plated or phosphate-coated couplings. When making up connections with tin-plated couplings, 80 percent of the listed value can be used as a guide.

The listed torque values are not applicable for making up couplings with PTFE polytetra? When making up round thread connections with PTFE rings, 70 percent of the listed values are recommended. Buttress connections with PTFE seal rings may make up at torque values different from those normally observed on standard buttress threads. Thread galling of gall-prone materials martensitic chromium steels, 9 Cr and 13 Cr occurs during movement—stabbing or pulling and makeup or breakout.

Galling resistance of threads is primarily controlled in two areas—surface preparation and? Threads and lubricant must be clean. Assembly in the horizontal position should be avoided. Connections should be turned by hand to the hand-tight position before slowly power tightening.

The procedure should be reversed for disassembly. It is advisable when starting to run casing from each particular mill shipment to make up suf?

These values may indicate that a departure from the values listed in Table 1 is advisable. If other values are chosen, the minimum torque should be not less than 75 percent of the value selected. The maximum torque should be not more than percent of the selected torque.

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

The power tong should be provided with a aapi torque gauge of known accuracy. In the initial stages of makeup, any irregularities of makeup or in speed of makeup should be observed, since these may be indicative of crossed threads, dirty or damaged threads, or other unfavorable conditions. To prevent galling when making up connections in the?

Continue the makeup, observing both the torque gauge and the approximately position of the coupling face with respect to the apo vanish point position. The torque values shown in Tables 1, 2, and 3 have been selected to give recommended makeup under normal conditions and should be considered as satisfactory providing the face of the coupling is?

If the makeup is such that the thread vanish point is buried two thread turns and 75 percent of the torque 4. Early studies and tests indicated that torque values are affected by a large number of variables, such as variations in taper, lead, thread height and thread form, surface?

In view of the number of variables and the extent that pai variables, alone or in combination, could affect the relationship 5c torque values versus made-up position, it was evident that both applied torque and made-up position must be considered.

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