海底长输油管道清管球破裂压力试验及矿场应用

Bursting Pressure Test and Field Application of Spherical Pig in Long Submarine Oil Pipeline

王威 鲁瑜 罗峰 张宗超 郭庆

WANG Wei LU Yu LUO Feng ZHANG Zongchao GUO Qing

中海石油(中国)有限公司天津分公司, 天津 300452

Tianjin Branch of CNOOC Ltd., Tianjin 300452, China

此文旨在研究海底长输油管道清管球运行过程中通过性、破裂性及破裂压力等特性。以渤海某油田原油外输海管为例，通过优化清管球旁通孔的设计方案，增加了流体通过率，能有效降低清管球卡堵对上游生产单元带来的安全风险。通过开展清管球的破裂压力模拟实验，证实了泡沫清管球具有一定的承压能力、良好的通过性以及可靠的破裂性。试验表明：泡沫球清管球在管道中遇卡堵时，可根据管道中卡堵的程度以及压差的增大来调节自身的通过能力；当压差增大至破裂压力时，泡沫球自身破裂、破粹以通过卡堵。

The paper focuses on the study of the trafficability, disruptiveness and bursting pressure characteristics of the spherical pig in the long submarine oil pipe when it runs. Taking the oil pipeline of some oilfield in Bohai Sea as an example, the passing rate of fluids is increased by optimizing the design of spherical pig by-pass orifice, and the safety risk to the upstream production unit caused by the blocking of spherical pig can be effectively reduced. The simulation experiment of the bursting pressure demonstrates that the foam pig has a certain pressure-bearing capacity, good trafficability and reliable disruptiveness. The trial application also shows that the foam pig can self-adjust the passing capacity according to the blockage degree and pressure difference in the pipeline when the foam pig is blocked in the pipeline; when the pressure difference is increased to the rupture pressure, the foam pig is broken.

https://doi.org/10.3969/j.issn.1008-2336.2017.03.075