蒸汽驱用隔热油管的研制

新研制的蒸汽驱用隔热油管采用预应力真空隔热双层结构,主要由内管、外管、隔热衬套、衬管和接箍等组成。隔热油管联接采用长圆螺纹,具有良好的密封和抗粘扣性能;管材化学成分中加入耐高温和适当的合金元素,其力学性能和焊接性能满足要求;隔热油管的视导热系数达到E级。辽河油田分公司齐40块和高3区的蒸汽驱先导试验表明,这种隔热油管使用时未发生变形,测井仪器下放不受影响,各项性能满足设计要求。

Development of insulated tubing for steam drive process

The newly-developed insulated tubing for steam drive uses prestress vacuum insulated dual-layer structure and mainly consists of inner tube,outer tube,insulated jacket,liner and coupling.The insulated tubing is connected with long and round thread,showing good sealing and anti-cohesive behavior.The chemical composition of the tubular is added with adequate anti-high temperature alloy element,whose mechanical property and welding performance can meet the demand.The apparent thermal conductivity coefficient of the insulated tubing reaches grade E.The pilot test of steam drive in Block Qi 40 and Gao 3 in Liaohe Oilfield Company indicates that this kind of insulated tubing is not deformed while being utilized.The logging tool is not affected while being running down into the borehole.The parameters of the tubing can meet the demand of the design.