Device for protecting a male end of a threaded tubular connection component, having open and closed positions, and associated methods and mounting machines

1. A protective device for a male end of a component of a threaded tubular connection for drilling and working hydrocarbon wells, externally provided with at least one threading and including a free terminal portion, said device comprising:

i) a protector body produced in a form of a first sleeve and arranged to protect at least part of said external threading and said free terminal portion;

ii) a sealing element configured to be positioned in contact firstly with said component, at least at a portion located downstream of said external threading of the male end, and secondly with the protector body, so as to provide a first seal downstream of said external threading; and

iii) fixing means for displacing said sealing element and/or said protector body radially towards said component defining open and closed positions of the device in which the sealing element and/or the protector body are respectively not in contact and in tight contact with said component, and wherein the first seal is obtained in the closed position of said device,

wherein said sealing element is produced in a form of a second sleeve,

wherein said second sleeve is configured to be interposed between said male end and said first sleeve over at least a portion of an axial length of said first sleeve, and

wherein said fixing means comprises a circumferential clamping means disposed about the protector body and arranged to radially displace said sealing element towards and into contact with said component and to immobilize said protector body and said sealing element with respect to said male end in the closed position.

2. A device according to claim 1 , wherein said second sleeve is produced from a transparent material.

3. A protective device according to claim 1 , wherein said second sleeve is generally disposed in the axial extension of the first sleeve, and complementary fixing means is arranged on the protector body and on the sealing element to attach said protector body and said sealing element together.

4. A protective device according to claim 1 , wherein said second sleeve extends to cover a transverse annular end surface of the terminal portion of the male end.

5. A protective device according to claim 1 , wherein said second sleeve comprises an external bulge which is at least partially annular cooperating with a recess of said first sleeve and arranged to be radially compressed between said first sleeve and said male end in the closed position.

6. A protective device according to claim 1 , wherein said first sleeve includes two complementary portions arranged so as to be fixed to each other in the closed position.

7. A device according to claim 1 , wherein said sealing element has a generally external frustoconical form of revolution, and said first sleeve has a generally internal frustoconical form of revolution which can be fitted in a tight manner on said sealing element.

8. A protective device for a male end of a component of a threaded tubular connection for drilling and working hydrocarbon wells, said component being externally provided with at least one external threading and including a free terminal portion, said device comprising:

i) a first circumferential sleeve arranged to protect said external threading and said free terminal portion;

ii) a sealing element configured to be positioned between said component and said first circumferential sleeve, in contact with a portion of said component located opposite to said free terminal portion with respect to said external threading of said male end, so as to provide a first sealing contact zone opposite to said free terminal portion with respect to said external threading of said male end; and

iii) a circumferential clamp for tightly securing said first circumferential sleeve, said sealing element and said component together, by application of a force radially from said first circumferential sleeve towards said component,

the device having an open position and a closed position, said first sleeve, said sealing element and said component being not in tight contact in said open position and said first sleeve, said sealing element and said component being in tight contact in said closed position, said first sealing contact zone being effective in said closed position.