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Function of the Wireline Pressure Control Equipment
During perforation and fracturing operation of the horizontal well, the major function of the wireline pressure control equipment is the fracturing truck hydraulically pumping the perforating gun and the bridge plug into the downhole horizontal segment, after perforation don't blow off, upward pull the wireline and perforating gun, after complete one section, change gun and shot, under pressure running in a new horizontal segment again, in such a continuous perforation but don't blow off cyclic process, dynamic and static to seal the wellhead, control the wellhead pressure, providing pressure buffer zone and transition area to the bridge plug and the perforating gun string. At the same time, it can make sure the wellhead is closed when there are accidental conditions on the wellhead during operation, thereby preventing gas blowout accidents.
Major Technical Parameters
(1) wireline diameter φ11.8mm,φ8mm(suitable forφ5.6-12.7mm)
(2) drift diameter of lubricator φ120mm
(3) working pressure 70MPa
(4) intensity test pressure 105MPa
(5) sealing manner choke line + inject grease + rubber packing seal
(6) connection manner of lubricator Union connection
(7) length of lubricator 21m(2m×10pcs+1m×1pcs or by putting together various kinds of length specifications)
(8) ram type of bop three-level ram, first-level whole sealing, two-level semi- closed wireline ram between which can inject grease
(9) connection manner with wellhead Union crossover flange connection (5-1/2” casing braden head flange)
(10) service environment H2S/STD
(11) working temperature -29°C ~ +121°C
(12)operation control manner remote hydraulic control
Horizontal Well Fracturing Pumping Wireline Perforation Wellhead Pressure Control Equipment
