Continuous Tubing Drag Fracturing Process


Process Description:

Continuous pipeline drag fracturing technology is a technology that connects continuous pipeline with sand injection tool and bottom packer, isolates the pressurised layer section with bottom packer, realises sand injection through pipeline injection, sand fracturing through annular injection, and fracturing from bottom to top in a step-by-step manner. It is highly applicable to the segmental modification of unconventional low-permeability reservoirs. 

 

Process Features:

● Short construction period.

● Continuous operation with pressure, fast equipment mobilisation, and reduced operation time and cost.

● Precise positioning of fracturing layers, which is conducive to increasing production capacity.

● There is no limitation on the number of fracturing layers/sections, and a single trip of the column can be used for repeated fracturing; it is faster to select a new fracturing point later after a fracturing failure.

 

The Structure of The Tubing Column:

Continuous Tubing Drag Fracturing Process

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