油气管道废弃处置中的注浆技术

1. 中国石油管道公司;2. 中国石油管道公司沈阳输油气分公司;3. 中油管道建设工程有限公司

油气管道;废弃处置;注浆技术;填充材料;防塌陷

Application of grouting technology to the disposal of abandoned oil and gas pipelines
GUO Zhenghong1, WANG Hongtao1, MA Liang2, KANG Yewei1, LIU Ming3

1. PetroChina Pipeline Company; 2. Shenyang Oil & Gas Transportation Sub-Company, PetroChina Pipeline Company;3. PetroChina Pipeline Construction Engineering Co. Ltd.

oil and gas pipelines, abandonment disposal, grouting technology, filling material, collapse prevention

备注

随着废弃管道处置工作的深入开展,对于特殊地段不能拆除的废弃管道,在管道清洗后需要通过填充注浆材料防止地面沉降。废弃管道的注浆技术,主要是利用水泥、煤粉灰等注浆材料填充废弃管段,增加管体强度,防止管段受到外力压迫而发生变形或破裂,避免引起地上物的位置移动或地面塌陷。以兰郑长管道改线段为试验对象,根据管道注浆的基本原理,自主调配了注浆材料,基于填充要求进行了注浆现场试验。结果 表明:注浆技术能够实现废弃管道填充处置的要求,对特殊地段的防塌陷起到关键作用,是废弃管道处置过程中的重要保障技术。注浆技术在兰郑长管道改线段废弃管道处置工程中的实际效果,为该技术推广应用奠定了基础。(图2,参[21]

With the further development of abandoned pipeline disposal, the abandoned pipelines in some special sections which cannot be dismantled need to be filled with the grouting materials after being cleaned to prevent the ground subsidence. The grouting technology for abandoned oil and gas pipelines mainly uses grouting materials (e.g. cement, coal ash) to fill the abandoned pipe sections to increase the pipeline strength. So the pipe sections may be prevented from deforming and fracturing oppressed by outer force, and the movement of things over ground or surface collapse may be avoided. In this paper, the rerouted section of Lan-Zheng-Chang pipeline was taken as the object for case verification. According to the basic principle of pipeline grouting, the grouting materials were prepared independently. Then based on the filling requirement, the field test of the grouting was carried out. It is indicated that the grouting technology can satisfy the requirements on the filling disposal of abandoned pipelines, plays a key role in preventing the collapse of special sections and acts as the important guarantee technology during the disposal of abandoned pipelines. The actual effect of the grouting technology in the disposal engineering of the rerouted section of Lan-Zheng-Chang pipeline lays the foundation for its popularization and application in the disposal of abandoned pipelines. (2 Figures, 21 References)