Top Cemented + Bottom Bare Eyes Segmental Rehabilitation Process
Release time:
Process Description:
The integrated process of top cementing+bottom barehole segmentation can realise the integrated operation of cementing the upper tubular column and transforming the tubular column of one trip by segmentation through cementing valve, which can realise continuous operation and greatly save the operation time. At the same time, the bottom fracturing slipcovers can be selectively switched by the switching tool, and repeat fracturing can be closed layer operation can be realised.
Process Features:
● The integrated process of cementing and fracturing is mainly for the old well rehabilitation, drilling and completion. Well cementing before fracturing to achieve protection of casing, formation. It is mainly designed for the fracturing method of producing multiple fractures in the dense bottom layer with low permeability;
● Multiple structures in the tubing column are capable of secondary pressure build-up, which allows for secondary seating of the suspension packer;
● The slipcovers are designed to be switchable, and can be switched at a later stage by lowering a mechanical/hydraulic switching tool as required;
● It is a completion tool system that can perform multi-stage selective fracturing, which can achieve multi-stage selective fracturing by throwing balls of different sizes;
Tubing Column Structure:
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