Specifications

1.API Vacuum Insulated casing
2. reduces the heat loss
vide superior insulation
4.double concentric tube

  API Vacuum Insulated casing

 

Features:

1.        VIT generally uses double concentric tube, in the two layers of annulus inside pack insulation materials, and the pipe ends sealed to ensure good insulating properties.

2.        It can reduces the heat loss, certainly the steam quality and the depth of steam injection can be increased.

3.        It can minimizes heat stress on casing and cement mantle, protect the casing from damage by high temperature.

4.        During oil production it will provide superior insulation and greatly reduce the loss of heat energy.

 

Parameter of Pre-Stressed Vacuum insulated Tubing:

Parameter	Model
	139*101	139*88	114*76	114*62	88*50	73*40
Grade of insulating	DE		CDE		BCDE
Length (m)	9.0-10.0
Unit Weight (kg/m)	42.04	40.7	32	28	21	15
Connecting Thread	5 1/2 BCSG	5 1/2 BCSG	4 1/2 BCSG 4 1/2 EUE		3 1/2 USS 3 1/2 EUE	2 7/8 EUE 2 7/8NUE
Outer Tube OD (mm)	139.7	139.7	114.3		88.9	73.0
Inner Tube ID (mm)	101.6	88	76.0	62.0	50.6	40.9
Coupling OD (mm)	154	154	132		108	88.9
Running Depth (m)	MAX. 1600-4600

Insulating grade of VIT:

Insulting grade	B	C	D	E
Apparent k-factor(λ)(w/m.°C)	0.06>C≥0.04	0.04>λ≥0.02	0.02>λ≥0.006	0.006>λ≥0.002

                                 

                                                                           

 

 

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