摘要
煤层气是一种备受国家重视和开发利用的非常规清洁能源,煤层气储层物性的研究对煤层气资源的评价与开发具有重要意义。以黄河北煤田煤层气开发资料为基础,结合区域地质特征,应用煤层气地质理论对煤田内10号煤煤层气储层物性特征进行了研究。研究发现:10号煤层宏观煤岩类型以半亮煤为主,煤中有机显微组分以镜质组为主,无机显微组分以黏土为主;煤的变质程度比较高,整体进入成熟阶段;10号煤层储层孔裂隙发育、渗透率较低;10煤层对甲烷的吸附能力较强;10号煤层储层压力为2.16~4.20MPa,压力梯度为0.418~0.797MPa/100m,为低压储层至常压储层;黄河北煤田呈单斜构造,10号煤层埋藏深度较深,含水性较好,有利于煤层气保存。
CBM is a kind of unconventional clean energy,a matter to pay great concern and has exploited,utilized by the country.The study of CBM reservoir physical property is important on CBM resource assessment and exploitation.Based on CBM exploitation data in the Huanghebei coalfield,combined with regional geological features and CBM geological theory application have carried out study on coal No.10 CBM reservoir physical property characteristics.The study has found that the macrolithotype of coal No.10 is mainly semibright coal,organic maceral mainly vitrinite,inorganic maceral mainly clay.Degree of coal metamorphism is rather high,generally has entered mature stage.Coal No.10 reservoir has well developed pores and fissures,but rather low permeability and stronger methane adsorbability,reservoir pressure between 2.16~4.20MPa,pressure gradient 0.418~0.797MPa/100m,thus a low to constant pressure reservoir.Huanghebei coalfield is a monocline,buried depth of coal No.10 is rather deep with better water-bearing property,thus propitious to CBM preservation.
作者
罗怡鑫
李莹
王怀洪
尹露生
孔凡顺
王东东
Luo Yixin;Li Ying;Wang Huaihong;Yin Lusheng;Kong Fanshun;Wang Dongdong(College of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590;College of Traffic and Civil Engineering,Shandong Jiaotong University,Jinan,Shandong 250357;Shandong Provincial Coal Geological Planning,Exploration and Research Institute,Jinan,Shandong 250104)
出处
《中国煤炭地质》
2021年第1期26-30,共5页
Coal Geology of China
基金
“黄河北煤田晚古生代煤系多矿产共存机制与富集规律”项目
山东省自然科学基金项目(ZR2019MD021)
关键词
10号煤层
煤层气
煤储层物性及特征
黄河北煤田
coal No.10
CBM
coal reservoir physical property and characteristics
Huanghebei coalfield
