摘要
天然气水合物(NGH)矿产储量巨大,燃烧后几乎不产生任何残渣,是一种高效利用的清洁能源。为了提出天然气水合物切实可行的开采方案,对天然气水合物成藏特点进行分析,通过当前室内研究的天然气水合物开采方法比较,并考虑到真实开采过程中可能出现的地层破坏问题,在CO_2乳状液置换天然气水合物中CH_4实验和页岩油ICP开采技术的启发下,最终制订出一套具有井工厂特点的天然气水合物开采方案。研究得出:ICP技术核心工艺冷冻墙、加热井井网布置能有效克服热散失,并持续提供热量促进天然气水合物分解。CO_2乳状液置换技术能在高效产出CH_4情况下形成CO_2水合物,防止地层因为天然气水合物分解而产生的地层破坏。注采监测系统的部署能实时监控生产反应过程,可操作性强,控制精度高。
Natural gas hydrate （NGH）, with huge reserves, is a type of highly efficient and clean energy producing hardly any burning waste. In order to work out a practical NGH exploitation scheme, the accumulation features of NGH were identified, and the exploitation methods tested in laboratory were compared. Finally, a well-factory NGH exploitation scheme was proposed on the basis of the experiment of CH4 displacement by CO2 emulsion and the ICP shale oil extraction technology, which takes possible formation damage into account. The study results reveal that the frozen wall and heating well pattern arrangement, as core processes of ICP technology, can effectively prevent heat loss and provide heat consistently for NGH decomposition. The CO2 emulsion replacement technology can generate CO2 hydrate while effectively producing CH4, so that the formation can be protected from damage due to NGH decomposition. The injection and production monitoring system can monitor the production process in a real-time manner, with high operability and precision.
作者
杨远
肖传桃
李永臣
黄庆东
陈辉娜
李建忠
Yang Yuan Xiao Chuantao Li Yongchen Huang Qingdong Chen Huina li Jianzhong(School of Geosciences, Yangtze University PetroChina Coalbed Methane Co., LTD., Xinzhou Branch Zhundong Oil Production Plant of PetroChina Xinjiang Oilfield Company Exploration and Development Research Institute of PetroChina Huabei Oilfield Company No.5 Oil Production Plant of PetroChina Qinghai Oilfield Company)
出处
《中国石油勘探》
CAS
北大核心
2017年第5期111-118,共8页
China Petroleum Exploration
基金
国土资源部中国地质调查局勘查项目"东北冻土区天然气水合物资源勘查"(GZHL20120304)
关键词
天然气水合物
开采
地层破坏
CO2乳状液置换
ICP技术
natural gas hydrate （NGH）, exploitation, formation damage, CO2 emulsion replacement, ICP technology
