Formation Isolation valve/Fluid loss control valve

一、Overview:
    Formation Isolation valve, also known as Fluid loss control valves in the well completion and workover operations, in the process of oil well completion and workover operations the valve will be closed by pull out shifting tool, Prevent the completion fluid lost into the reservoir, protect the reservoir from contamination, increase the safety of the operation and production, simplifying the completion and workover operations, reduce the operation cost.
二、Application:
    During the period of oil Wells in the process of completion and workover operations to prevent leakage of completion fluid to the pay zone, protect the reservoir from damage.
三、Feature:
    Formation Isolation valveID is 4.75 inches, the OD is 203 mm (8.0 in), A fullhole size design can make the gravel pack service tool in and out through the valve easily, Provide big ID for upper completion seal assembly sting in, 8 inch OD design increased the annulus flow area, as much as possible during gravel pack to prevent formation sand bridge;
Main components adopt high-performance materials, special surface treatment, strength and corrosion resistance, to make the parts to ensure the reliability of the tools;
Shifting tool with tension shear ring design, can be set a certain value, ensure the production tubing string under special circumstances can be put out smoothly。
四、Specifications:
                                                                                                                                                                                               

Casing	ID	Max OD	Temperature	Working Press
	（in）	（in）	（℃）	（psi）
9 5/8″	4.75（Φ120.7mm）	8（Φ203mm）	≤120	5000