Beilai insulated tubing effectively reduces heat loss during Steam-Assisted Gravity Drainage (SAGD) operations for oil sands extraction.

Quality Control
100% body inspection for Beilai insulated tubing includes ultrasonic testing, drift test, hydrostatic test, as well as mechanical property tests (tensile yield, hardness, thread inspection, etc.). 100% weld quality inspection and thermal insulation performance test are also performed.

Product Features & Functions:

1. When the inner tube of insulated tubing is subjected to steam heat, the pre-applied tensile stress is released to compensate for thermal expansion differences between inner and outer tubes, ensuring reliable operation under high temperatures.
2. Getters are filled in the sealed air space to remove contaminant gases. This slows the gradual degradation of thermal insulation performance over time and maintains superior insulation for long-term service.
3. Steam injection via insulated tubing greatly cuts heat loss, significantly increasing achievable injection depth and steam quality delivered to the reservoir.
4. It reduces thermal stress on casing and cement sheath, preventing casing failure at high temperatures.
5. It delivers excellent thermal retention during oil production and substantially lowers heat loss. Buttress threads are adopted for the main string connection, featuring favorable stress distribution. Liners are installed between tubes to maintain laminar steam flow and reduce heat loss at joints.

Main Specifications:
178*124、139*101、139*88、 114*76、 114*62、 88*50、 73*40