Model QD-A Hold-down Sub

Cementing Tools

> Liner Hangers
> Stage Collars
> Cementing Heads
> Float Equipment
> Centralizer
> Cementing Plugs

Completion Tools

> Multi-stage Sliding Sleeve Tools
> Bridge plug
> Hydraulic jet

Drilling Tools

> Hydro-efflux Hammer

Oilfield Chemical Additives

> Drilling Fluid Additives

Product Application Record

> Liner hanger application record
> Double stage cementing machine

Model QD-A Hold-down Sub

Features /

1.Can be used with all hydraulic liner hangers.
2.Can be hydraulically locked and mechanically unlocked. Used for light weight liner.
3.Improves the success rate of setting tool release.

Technical Parameters /

Size	Previous casing weight		Liner weight		Sealing capacity of RPOB
in.	lb/ft	mm	lb/ft	mm	MPa
7×5	29.00	10.36	18.00	9.19	35
7×5	32.00	11.51	18.00	9.19
7-5/8×5-1/2	33.70	10.92	17.00	7.72
7-5/8×5-1/2	39.00	12.70	20.00	9.17
9-5/8×8-1/8	43.50	11.05	55.50	17.25
9-5/8×8-1/8	47.00	11.99	55.50	17.25


Cementing Tools Liner Hangers Stage Collars Cementing Heads Float Equipment Centralizer Cementing Plugs	Completion Tools Multi-stage Sliding Sleeve Tools Bridge plug Hydraulic jet	Drilling Tools Hydraulic Percussion Tool	Oilfield Chemical Additives Drilling Fluid Additives	Product Application Record Liner hanger application record Double stage cementing machine

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