稠油开采中，贝来隔热油管已被广泛用于提高采油率。

质量控制

贝来隔热油管100%管体检验包括超声，通经，水压等，以及机械性能检测（拉伸屈服、硬度、螺纹等）。100%焊接质量检测和隔热性能检测。

产品特点和功能：

1. 隔热油管的内管受到蒸汽热量影响时，可释放预施加的拉应力，以补偿内外管温差伸长，确保了产品在高温下工作的可靠性；
2. 封闭空气内充填有吸气剂，其功能是对污染气体进行清洁。从而延缓了系统随时间增加隔热性能下降的趋势，使产品在较长期工作中保持良好的隔热性能；
3. 用隔热油管注汽可以使注汽热损失大幅度降低，大大提高了可注入深度和注入油层的蒸汽质量；
4. 降低了套管和水泥环的热应力，防止套管高温损坏；
5. 用于采油时具有良好的保温效果，可以大幅度降低热损耗。主体管柱间采用偏梯形螺纹连接，这种螺纹受力状况好，管间放置衬管，即使蒸汽保持层流状态，又能减少接头处蒸汽的热能损失。

主要规格型号：

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

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In heavy oil extraction, Beilai insulated tubing has been widely used to improve oil recovery.

quality control

The 100% pipe body inspection of Beilai insulated tubing includes ultrasonic, warp, water pressure, etc., as well as mechanical properties testing (tensile yield, hardness, thread, etc.). 100% welding quality inspection and thermal insulation performance inspection.

Features & Functions:

1. When the inner pipe of the insulated tubing is affected by steam heat, the pre-applied tensile stress can be released to compensate for the elongation of the temperature difference between the inner and outer pipes, ensuring the reliability of the product working at high temperature;
2. The enclosed air is filled with an absorber, and its function is to clean the polluting gas. Thus, the trend of the system's thermal insulation performance decreasing with the increase of time is delayed, so that the product can maintain good thermal insulation performance in long-term work;
3. Steam injection with insulated tubing can greatly reduce the heat loss of steam injection, and greatly improve the steam quality of the injection depth and oil layer.
4. It reduces the thermal stress of the casing and cement ring and prevents the casing from being damaged at high temperature;
5. It has a good thermal insulation effect when used for oil recovery, which can greatly reduce heat loss. The main pipe string adopts a trapezoidal threaded connection, which has a good stress condition, and a liner is placed between the pipes, so that even if the steam maintains a laminar flow state, it can reduce the heat energy loss of the steam at the joint.

Main specifications and models:

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