4.Horizontal well fractruing
Horizontal well is an effective means to develop and
produce the low permeability reservoir. The production
capacity of horizontal wells is 2~5 times of the vertical
wells. Fracturing in horizontal wells, the production
capacity is increased much more higher than vertical wells,
especially for low permeability reservoir. It is necessary
to do fracturing for horizontal wells, if such situation
exist as shale lamina, lower vertical permeability zone with
difficult flow.
Horizontal fractruing technology mainly includs stage
fracturing,simultaneity multi-entrance fracturing and
isolation fractruing etc., with small granularity and lower
density proppant. |
