Collar for Staged Hydraulic Fracturing MSGRP-U is applied for multistage hydraulic fracturing.
A set of collars is RIH as a part of GRP liner assembly. Each collar is installed in the preset wellbore
zone. MSGRP collars actuation is performed with the device KUM.114 which is run in on coiled tubing.
In this case collars are actuated randomly. Collars actuation is also possible according to the standard
process with balls of different diameter. In this case seats are pulled out with a special device and
without drilling after collars actuation. Collars are run in as a part of a liner together with swellable and
hydro-mechanical packers. Liner assembly includes an unlimited number of collars installation.
| PARAMETER DESCRIPTION | VALUE |
| MSGRP-U.114 | |
| Liner nominal diameter equipped with the device, mm | 114 |
| Open borehole nominal diameter (bit diameter) which the device is run in, mm | 142,9 |
| Outer diameter, mm | 133 |
| Drift diameter, after actuation, mm | 99 |
| Maximum internal overpressure on the collar body, MPa | 70 |
| Maximum external overpressure on the collar body, MPa | 70 |
| Maximum tensile axial force on the body1 , kN |
400 |
| Maximum operating temperature2 , °C |
100 |
| Length, mm | 949 |
| Weight, kg | 35 |
1
Calculated value when stresses reach yield point of the material.
2 Reference only, depends on operating conditions of general mechanical
rubber goods in a well
