SCREW JOINT FOR OIL WELL PIPE
Provided is a screw joint for an oil well pipe in which an efficient screw length of a joint portion is achieved, and a processing time and a construction time are reduced. The present invention provides a screw joint for an oil well pipe of an integral type, including a pin that is provided with a...
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| creator | KAWAI Takamasa SEKI Haruhiko TAKANO Jun NAGAHAMA Takuya YOSHIKAWA Masaki |
| description | Provided is a screw joint for an oil well pipe in which an efficient screw length of a joint portion is achieved, and a processing time and a construction time are reduced. The present invention provides a screw joint for an oil well pipe of an integral type, including a pin that is provided with a male screw portion which is a male taper screw, at one end of a steel pipe; and a box that is provided with a female screw portion which is a female taper screw fitted to the male screw portion, at one end of the steel pipe, in which a structure, in which the pin and the box are in metal contact with each other to seal a fluid, is provided at least at one place of a seal portion on an outer peripheral surface side of a pipe end side of the pin and a seal portion on an inner peripheral surface side of a pipe end side of the box, in which a minimum value Lmin (mm) of a screw length L (mm) in screw rows of the male taper screw and the female taper screw is defined by expression (1), and in which the screw length L (mm) in the screw rows satisfies expression (2). Lmin=t×D−t/αt×Dt/√3×jointefficiencyLmin×1.0≤L≤Lmin×2.5 |
| format | Patent |
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The present invention provides a screw joint for an oil well pipe of an integral type, including a pin that is provided with a male screw portion which is a male taper screw, at one end of a steel pipe; and a box that is provided with a female screw portion which is a female taper screw fitted to the male screw portion, at one end of the steel pipe, in which a structure, in which the pin and the box are in metal contact with each other to seal a fluid, is provided at least at one place of a seal portion on an outer peripheral surface side of a pipe end side of the pin and a seal portion on an inner peripheral surface side of a pipe end side of the box, in which a minimum value Lmin (mm) of a screw length L (mm) in screw rows of the male taper screw and the female taper screw is defined by expression (1), and in which the screw length L (mm) in the screw rows satisfies expression (2). 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The present invention provides a screw joint for an oil well pipe of an integral type, including a pin that is provided with a male screw portion which is a male taper screw, at one end of a steel pipe; and a box that is provided with a female screw portion which is a female taper screw fitted to the male screw portion, at one end of the steel pipe, in which a structure, in which the pin and the box are in metal contact with each other to seal a fluid, is provided at least at one place of a seal portion on an outer peripheral surface side of a pipe end side of the pin and a seal portion on an inner peripheral surface side of a pipe end side of the box, in which a minimum value Lmin (mm) of a screw length L (mm) in screw rows of the male taper screw and the female taper screw is defined by expression (1), and in which the screw length L (mm) in the screw rows satisfies expression (2). 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The present invention provides a screw joint for an oil well pipe of an integral type, including a pin that is provided with a male screw portion which is a male taper screw, at one end of a steel pipe; and a box that is provided with a female screw portion which is a female taper screw fitted to the male screw portion, at one end of the steel pipe, in which a structure, in which the pin and the box are in metal contact with each other to seal a fluid, is provided at least at one place of a seal portion on an outer peripheral surface side of a pipe end side of the pin and a seal portion on an inner peripheral surface side of a pipe end side of the box, in which a minimum value Lmin (mm) of a screw length L (mm) in screw rows of the male taper screw and the female taper screw is defined by expression (1), and in which the screw length L (mm) in the screw rows satisfies expression (2). Lmin=t×D−t/αt×Dt/√3×jointefficiencyLmin×1.0≤L≤Lmin×2.5</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| source | esp@cenet |
| subjects | BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS |
| title | SCREW JOINT FOR OIL WELL PIPE |
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