METHANE EMISSION DURING SHALEGAS DEVELOPMENT

doi:10.13776/j.cnki.resourcesindustries.2014.06.012

Abstract

Abstract: Methane emission happens in shale-gas's mining, processing, restoring, transporting and consuming. Chinas shalegass production has not yet entered a large scale, so less measurement has been done on its methane emission. This paper analyzes the major methane emission aspects from the entire circle and each stage, based on the references of methane emission volume, measures the methane emission quantity on the basis of China's shale-gas resource abundance and volume, and indicates that the emission rate is 3.26% in the whole circle but varying at each stage, highest in well completion stage. The methane emission weakens the effect of shale-gas emission, and may confuse the idea of shalegas being a cleaner energy than coal and oil.

Key words: shale-gas, methane emission, entire life circle, governmental supervision

摘要： 在页岩气开采—加工—存储—运输—消费的全生命周期中，甲烷排放存在于每一个开发利用环节。由于国内的页岩气生产尚未进入大规模商业开发阶段，相应的对于甲烷排放量的测算很少。为此，文章基于页岩气开发利用的全过程，研究了在此过程中甲烷的主要排放途径，从全生命周期以及各阶段两方面梳理了国外学者对页岩气开发利用过程中甲烷排放量的已有研究，结合我国页岩气资源禀赋特点和资源量进行了相应的甲烷排放量测算和分析。结果表明：1）在页岩气的整个开发过程中，甲烷排放问题比较突出，平均排放率在326%左右；2）在页岩气开发利用的不同阶段甲烷排放量差异较大，其中生产阶段尤其是完井阶段排放率最大；3）甲烷排放削弱了页岩气的减排效果，并可能影响页岩气是一种比煤和石油更清洁的能源这一论断的正确性。

关键词: 页岩气, 甲烷排放, 全生命周期, 政府监管

CLC Number:

F205
TE122

YU Chen, TANG Xu, ZHANG Bao sheng. METHANE EMISSION DURING SHALEGAS DEVELOPMENT[J]. Resources & Industries, 2014, 16(6): 78-84.

余晨，唐旭，张宝生. 页岩气开发利用过程中甲烷排放的研究[J]. 资源与产业, 2014, 16(6): 78-84.

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