Name: (Built-in Couplings) Unbalanced Drilling Hose
Type:UDG-SZ
? Application:
? Used for delivery of high pressure drilling fluid mixed with gas while unbalanced drilling technology applied , such as drilling fluid mixed with nitrogen, air, mixed gas from air and nitrogen, natural gas. Gas mixed is for foaming and lighting fluid weight
? Standard: API Spec 7K
? API monogram No.: 7K-0458
? Hose structure:
Inner tube: Polymer engineering plastic
Inner rubber layer: HNBR based inner rubber layer, oil resistance, corrosion resistance, high temperature resistance, gas permeation resistance
Breaker layers and external protection layers: High tension textile fabric
Major Reinforcement for withstanding pressure: high strength steel cable
Cover: Neoprene rubber based cover, fire-proof, wear resistance, oil resistance, ozone/ageing resistance, UV resistance, which is applicable for challenging marine environment.
? Fire proof grade:
General hose meets the requirements on general fire protection grade SR6A, 704° C (1300° F) ×5min
The hose can be coated with a fireproofing anti-flaming layer (fiberglass fire protection layer), it meets the requirements on high fire protection grade SR6B, 704° C (1300° F) ×30min
? Embedded electric heat trace cable is available as request for low temperature operating condition.
? Different option of external protection layer are available as request or by our recommendation according to specific operation condition, for example stainless steel armor outer wrap, embedded stainless steel wire in cover, or polyethylene spiral guard, etc.
? Working temperature range: class Ⅱ , -25 to +100 ℃
? Flexibility specification level: FSL3
? Maximum length: 70m
? Length tolerance: Length up to 6.4m, with tolerance ± 64 mm; Length longer than 6.4M with tolerance ± 1％
? Measurement basis of Minimum Bending Radius (MBR) is center line of each hose