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Disconnector
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Disconnectors ARV-55M, ARN-55M, AGRV-55M and RGM-56 are purposed to release flush-joint pipe casing from the bottomhole instrument without leaving in a borehole elements of the destroyed shear pins.
Disconnectors ARV-55M and ARN-55M are of mechanical type, the disconnecting process is carried out by applying the stretching load, the value of which is regulated by installing the necessary amount of cut screws.
Disconnectors AGRV-55M and ARGN-55M are of hydraulic type, the disconnecting process is carried out by creating superfluous pressure in a flush-joint pipe casing string after tripping-out a ball into a string.
Disconnector RGM-56 lets also to realize a temporary disconnection from the bottom hole instrument for carrying out necessary technological operations - pumping of the technological fluid, flushing out of the area over the instrument from cuttings, precipitations and deposits - with the possibility of the further connection with the bottomhole assembling. The disconnecting process is carried out by creating superfluous pressure in the flush-joint pipe casing after dropping the ball into the string.
The disconnectors construction provides torque tranfer.
E-disconnector ARV-55M, AGRV-55M with fishing part is in the form of the socket with fitted shoulder (capture for the inner surface).
E-disconnector ARN-55M, AGRN-55M with fishing part is in the form of the nipple with outside shoulder (capture for the outside surface).
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Features |
ÀÐV-55Ì |
ÀÐN-55Ì |
ÀGRV–55Ì |
ÀGRN-55Ì |
RGÌ-56 |
| Outside diameter, mm/in |
55/ 21/4 |
55/ 21/4 |
55/ 21/4 |
55/ 21/4 |
55/ 21/4 |
| Through-out diameter, mm/in |
25/ 1 |
25/ 1 |
21/ 7/8 |
16/ 5/8 |
18/ 3/4 |
Axled force of the disconnection, t
maximal (with 6 screws)
minimal (with 1 screw) |
9,42
1,57 |
9,42
1,57 |
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The length, mm/in
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293/ 111/2 |
383/ 15 |
598/ 231/2 |
657/ 257/8 |
385/ 151/8 |
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Coupling thread*, GOST 633-80 above:
- above socket
- below nipple |
NKT48Gl
NKT48Gl
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NKT48Gl
NKT48Gl
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NKT48Gl
NKT48Gl
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NKT48Gl
NKT48Gl
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NKT48Gl
NKT48Gl
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* Upon customer's request coupling threads can be changed.
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