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Geological characteristics and high production control factors of shale gas reservoirs in Silurian Longmaxi Formation, southern Sichuan Basin, SW China
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MA Xinhua,XIE Jun,YONG Rui,ZHU Yiqing
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Table 5 Technological indexes for high production of deep shale gas in the southern Sichuan.
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| Geology | Engineering | Box
position | Well track direction | Box height/m | Penetration rate/% | Wellbore integrity/% | Fracturing technology | Displacement/(m3?min-1) | Intensity of fluid injection/(m3?m-1) | Intensity of sand injection/(t?m-1) | Long111- Long113
with high
brittleness | Perpendicular to major horizontal principal stress | 10 | ≥90 | ≥90 | Low-viscosity slick water, dense cutting + high-intensity sand injection, and temporary blocking and diverting | >14 | >30 | >2.0 |
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