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PitMSFrac – technology of perforating and multistage fracturing per 1 well operation

Well conditions

• Temperature up to 140°С

• Production casing OD 4 – 7 in

• Pressure up to 1000 atm

• Volume of proppant pumped per 1 well operation:

– up to 200 t for production casing 4, 1/2 in

– up to 400 t for production casing D from 5,75 in

Pit perforation parameters for production casing -114

• Number of segments to be penetrated per 1 well operation – 120

• Maximum density per 1 meter – 16

• Dimensions of penetrated segments – 45×14 mm

Criteria for selecting wells for pilot tests

• The volume of proppant pumping per 1 well operation not more than 200 – 400 tons (depending on the size)

• Maximum pressure at hydraulic fracturing not more than 700 atm

• Maximum number of stages – 10

• Proppant concentration not more than 1200 kg/m3

• Flow rate during hydraulic fracturing is not more than 3.6 m3/min

• The angle of intensity of curvature set for 10 meters is not more than 3.2 degrees

• Fluid used during perforation – density not more than 1.32 g/cm3 per CaCl, kinematic viscosity not more than 30 sec, must not contain mechanical impurities, weighting agents (barite, hematite, marble chips)

• Hydraulic fracturing port installation interval – no more than 10 meters above the roof of the perforation interval

• Hydraulic fracturing with full proppant displacement (lack of proppant in the tubing hanger)

• After hydraulic fracturing, the perforation interval should be opened

PitMSFrac

The technology makes it possible to perform the following operations in 1 well operation:

• Performing a punching perforation
• Install a selective packer layout opposite the perforation holes and perform hydraulic fracturing or bottomhole treatment according to the design
• After flushing the well, repositioning to the next interval is performed and the operations are repeated

Advantages of the technology PitMSFrac

Increasing the rate of putting a well into operation by more than 200 hours
Increasing well flow rate by more than 25% compared to competitors due to the ability to perforate additional sections of the well at any point to suit the customer's needs
Reducing the cost of subsequent operation of wells with multifracturing at the expense of preserving the equal-pass well design

Selective well layout PitMSFrac