摘要
非常规天然气储量丰富,因其清洁特性被认为是常规能源的替代者。我国初步掌握了适合煤层气、页岩气和致密气特点的集输工艺技术,近年的勘探开发和先导性试验证明了煤层气/页岩气/致密气多气合采的现实性和可行性。多气合采可降低开发成本、提高经济效益和资源利用率,但目前仍处于探索阶段。除了具有单种非常规天然气集输难点外,多气合采地面集输还需解决不同多压力体系条件下产层产出气压力匹配的关键问题,主要表现在:(1)产层、井间、井与管网之间的压力匹配问题;(2)高低压流体能量的协调利用问题;(3)集输系统工艺参数智能匹配问题。为了克服以上困难,实现经济高效的多气合采地面集输,应该开展如下研究:(1)多气合采采气、集输工艺一体化技术;(2)包含引射装置的多气合采集输系统模拟优化技术;(3)考虑系统效率的集输工艺参数智能匹配技术。
Unconventional natural gas reserves are abundant on earth.Natural gas is regarded as a substitute for conventional coal and oil because it is cleaner.Preliminary gathering and transportation technologies suited for coalbed methane,shale gas and tight sandstone gas have been developed in China.In recent years,the feasibility of multi-gas co-production（co-exploration and concurrent production of coalbed methane,shale gas and tight sandstone gas） has been proved by a series of exploratory developments and pilot tests.Through multi-gas co-production,the costs will reduce and economic efficiency and resource utilization will improve.However,these technologies are still at an initial stage.In addition to the difficulties in a single unconventional natural gas gathering and transportation system,there is another key issue which needs to be solved.Namely,how to overcome the conflicts between gases of different pressure levels in a diverse pressure gathering system.This is mainly in：（1） the pressure matching between production layers,individual wells and gathering networks,（2） the coordinated utilization of energy among the gases of different pressure levels,（3） the intelligent matching of process parameters in gathering and transportation systems.In order to produce gas from these different sources in an economical and efficient way,the difficulties mentioned above will need to be solved by carrying out the following studies：（1） Techniques for integration of gas production and gathering and transportation for multi-gas co-production,（2） simulation and optimization technique of multi-gas co-production gathering systems containing ejector devices,（3） intelligent matching techniques for the gathering and transportation process parameters considering the system efficiency.
作者
洪炳沅
李晓平
李愚
周军
周艳红
韦宝成
宫敬
HONG Bingyuan;LI Xiaoping;LI Yu;ZHOU Jun;ZHOU Yanhong;WEI Baocheng;GONG Jing(National Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum Engineering/Beijing Key Laboratory of Urban Oil and Gas Distribution Technology,China University of Petroleum-Beijing,Beijing 102200,China;Department of Storage and Transportation Engineering,College of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu 610500,China)
出处
《石油科学通报》
2018年第2期195-204,共10页
Petroleum Science Bulletin
基金
十三五国家科技重大专项:多气合采全开发周期集输及处理工艺(编号:2016ZX05066-005-001)资助
关键词
多气合采
非常规天然气
地面集输
模拟优化
参数匹配
multi-gas co-production
unconventional gas
surface gathering system
simulation and optimization
parametermatching
