HYDRAULIC FRACTURING

Collar for staged hydraulic fracturing with an operating device MSGRP-U

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
PARAMETER DESCRIPTION	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