CN页岩气田地面建设标准化体系的建立及应用

Establishment and Application of Standardization System forCN Shale Gas Field Surface Facilities Development

页岩气是以吸附状态和游离状态赋存于泥岩及页岩中的天然气,具有开采寿命长、压力和产能衰减快、生产周期长等非常规特点。随着中国页岩气田规模化开采和滚动开发模式的应用,页岩气田在地面工程建设中逐渐呈现出集输规模不确定性强、管网和站场布局适应性差、建设周期长、工业装置配套难度大、投资高等诸多问题。为了解决这些问题,构建了一套以“标准化工艺流程、模块化功能分区、橇装化高效设备、系列化装置组合、数字化管理”为核心的标准化建设体系。通过CN页岩气田地面建设标准化体系的实践应用,克服地面建设难点,缩短地面建设周期,节约地面建设成本,为中国页岩气田地面建设标准化设计体系提供一定的借鉴。

Shale gas is a natural gas that is found trapped between sedimentary rocks in shale formation in an adsorbed and free state,with unconventional characteristics such as long extraction life,fast pressure and capacity decay rate,and long production cycle.With the application of large scale extraction and rolling development models in China s shale gas fields,many issues have gradually emerged;such as high uncertainty in gathering and transportation capacities,poor adaptability of pipeline network and station layout,long development cycle,and difficulty in getting matching industrial equipment system;and high investment.To solve these issues,a set of“Five”“Standardized Engineering Systems”has been established with“standardized process flow scheme,modularized process function groups,highly-efficient skid-mounted equipment,series of standard equipment sizes,digitalized management”as the core.Through the practical application of the CN shale gas field surface facilities Standardized Engineering System,we have overcome the challenges in surface facilities development,shortened the duration for surface development cycle and lowered the capital costs.This paper provides a valuable reference for the standardized engineering system of shale gas field surface facilities development in China.