APPARATUS FOR EFFECTING BEDDING-IN BY SCREWING AND UNSCREWING OF SCREWTHREADED JOINTS FOR THE ASSEMBLY OF TUBES

An apparatus for performing at least one cycle of screwing and unscrewing of a screwthreaded joint for the assembly of tubes, which enables tightening of the joint with a high level of torque while avoiding damage to the screwthreads. The apparatus comprises two wrenches, each wrench engaging agains...

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Bibliographische Detailangaben
Hauptverfasser:	FRADIN, LOUIS, MEURANT, MICHEL
Format:	Patent
Sprache:	eng
Schlagworte:	COMBINED OPERATIONS EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS OTHER WORKING OF METAL PERFORMING OPERATIONS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	An apparatus for performing at least one cycle of screwing and unscrewing of a screwthreaded joint for the assembly of tubes, which enables tightening of the joint with a high level of torque while avoiding damage to the screwthreads. The apparatus comprises two wrenches, each wrench engaging against a component of the joint, with each wrench comprising at least one mobile jaw which is slidable in a chamber. The mobile jaw is formed of a material which undergoes plastic deformation at the stress to which it is subjected in order to tighten or loosen the joint. This apparatus is used for bedding-in components of screwthreaded joints for tubes used in petroleum drilling operations.