深水海底管道预调试技术概述

Summary on pre-commissioning technology of deepwater offshore pipeline

深水油气田开发中,海底管道预调试施工面临诸多难题,常规作业方式已经难以满足作业要求。目前深水海底管道预调试的施工技术主要有两种:连续油管技术与水下模块技术。对比两种技术的优劣,水下模块技术在海底管道清管、试压施工中具有明显优势。不同公司使用的水下模块主要分为两类:一类为单功能水下橇,主要包括水下清管橇、水下试压橇和水下数据记录橇,分别实现海底管道注水清管、海底管道试压与数据记录;另一类为多功能水下橇,集海底管道清管、试压及水下记录功能于一体。以海洋石油工程股份有限公司水下清管试压橇SFHM为例,详细介绍其清管试压过程,并重点介绍其在流花16-2项目中的应用。

In the development of deepwater oil and gas fields,there are many problems in the offshore pipelines pre-commissioning,and the conventional operation is more difficult to meet the requirements.There are two main technologies for deepwater pipeline pre-commissioning:the coiled tubing technology and the subsea module technology.By comparing the advantages and disadvantages of these two technologies,the subsea module technology has obvious advantages in the pipeline cleaning and hydrotesting.The subsea modules applied by different companies are mainly divided into two types:the single-function subsea skid,which includes the subsea pigging skid,the subsea hydrotesting skid and the subsea data logging and recording skid to respectively achieve water injection,pipeline hydrotesting and data recording;another is the multi-functional subsea skid to integrate the pipeline pigging,subsea hydrotesting and subsea recording functions.Taking the multi-functional subsea skid(COOEC SFHM)as an example,this paper introduces its pigging and hydrotesting process in detail,and focuses on its application in Liuhua 16-2 project.