山东省煤层气赋存特征及资源评价
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摘要
综合应用煤层气地质学、煤地质学、煤岩学、煤化学等学科理论和方法,利用钻井、测井、地质录井、岩芯分析、生产以及各项实验分析等方面资料,研究山东省黄河北及邻近区块煤层气赋存特征及资源评价。
本文对黄河北煤田煤储层特征进行研究,结果表明：研究区煤层气气源岩为山西组和太原组煤层。其分布特点在剖面上为上薄下厚；在平面上是东多西少,东薄西厚。几乎各种煤类都包括,但在黄河北煤田的北部广大地区,以气煤和气肥煤为主。山西组煤的宏观特征以暗淡型煤为主,太原组的部分煤层,不同程度地存在着腐泥煤或腐殖泥煤。研究区煤储层孔隙度低、渗透率低、表面积大,但由于后期改造可以生成高渗透储层。
本文对黄河北煤田煤层气赋存特征进行研究,结果表明：煤层气一般以吸附气、游离气、水溶气3种状态存在与煤层中。研究区煤层气绝大部分以吸附状态存在于煤层微孔隙之中。研究区内深部井点煤层气组分中以甲烷为主,浅部煤层气组分中氮气含量较高。研究区内煤层气含量由东南向西北逐渐增高。并深入探讨了构造条件、煤层顶底板岩性、岩浆岩、煤层埋深及上覆基岩厚度、水文地质条件对煤层气赋存的影响。
对研究区进行了煤层气资源量估计和评价,从而确定黄河北煤田的深部及北部地区可作为今后勘探开发的目标区。
Synthetically apply CBM geology, coal geology, coal petrology, coal chemistry and other theories and disciplines, use data of drilling, logging, geological logging and core analysis, production and various experimental analysis etc to study the existence features of CBM and resource assessment of Huanghebei and its adjacent area in Shandong province.
Study the features of coal reservoir stratum of Huanghebei coalfield, the results shows that:the CBM gas source rock of the study area is the coal seam of Taiyuan formation. The distribution characteristics are the section appears to upper thin, lower thick;the plane appears to eastern more and thin,western less and thick. Almost all kinds of coal types are included, but the main types are gas coal and gas-fat coal. The macrofeature of coal of Shanxi formation is most of types are dim type coal, sapropelic coal or humosapropeliccoal exists to varying degrees in part of coal seam of Taiyuan formation. In coal reservoir stratum of the study area, porosity and permeability is low, superficial area is large. But it can generate high permeability reservoir stratum because of later reconstruction.
Study the existence features of CBM of Huanghebei coalfield, the results shows that: CBM is generally present in the coal seam in the form of three states:adsorbed gas, free gas and water soluble gas. The CBM of the study area mostly exists in micropore of coal seam with adsorption state. Deep well point in the study area dominated by CBM, but in the superficial part is nitrogen. The CBM content is gradually heighten from southeast to northwest in study area. And deeply discusses the influence of structural environment, the lithology of the roof and floor seam,magmatic rock, burial depth of coal seam and the thickness of bedrock overlying and hydrogeologic condition to CBM existence.
Estimate the CBM resources of study area and evaluate selection, consequently confirm that the deep coalfield of Huanghebei and its northern area can be the target area that can be explored and developed in future.
本文对黄河北煤田煤储层特征进行研究,结果表明：研究区煤层气气源岩为山西组和太原组煤层。其分布特点在剖面上为上薄下厚；在平面上是东多西少,东薄西厚。几乎各种煤类都包括,但在黄河北煤田的北部广大地区,以气煤和气肥煤为主。山西组煤的宏观特征以暗淡型煤为主,太原组的部分煤层,不同程度地存在着腐泥煤或腐殖泥煤。研究区煤储层孔隙度低、渗透率低、表面积大,但由于后期改造可以生成高渗透储层。
本文对黄河北煤田煤层气赋存特征进行研究,结果表明：煤层气一般以吸附气、游离气、水溶气3种状态存在与煤层中。研究区煤层气绝大部分以吸附状态存在于煤层微孔隙之中。研究区内深部井点煤层气组分中以甲烷为主,浅部煤层气组分中氮气含量较高。研究区内煤层气含量由东南向西北逐渐增高。并深入探讨了构造条件、煤层顶底板岩性、岩浆岩、煤层埋深及上覆基岩厚度、水文地质条件对煤层气赋存的影响。
对研究区进行了煤层气资源量估计和评价,从而确定黄河北煤田的深部及北部地区可作为今后勘探开发的目标区。
Synthetically apply CBM geology, coal geology, coal petrology, coal chemistry and other theories and disciplines, use data of drilling, logging, geological logging and core analysis, production and various experimental analysis etc to study the existence features of CBM and resource assessment of Huanghebei and its adjacent area in Shandong province.
Study the features of coal reservoir stratum of Huanghebei coalfield, the results shows that:the CBM gas source rock of the study area is the coal seam of Taiyuan formation. The distribution characteristics are the section appears to upper thin, lower thick;the plane appears to eastern more and thin,western less and thick. Almost all kinds of coal types are included, but the main types are gas coal and gas-fat coal. The macrofeature of coal of Shanxi formation is most of types are dim type coal, sapropelic coal or humosapropeliccoal exists to varying degrees in part of coal seam of Taiyuan formation. In coal reservoir stratum of the study area, porosity and permeability is low, superficial area is large. But it can generate high permeability reservoir stratum because of later reconstruction.
Study the existence features of CBM of Huanghebei coalfield, the results shows that: CBM is generally present in the coal seam in the form of three states:adsorbed gas, free gas and water soluble gas. The CBM of the study area mostly exists in micropore of coal seam with adsorption state. Deep well point in the study area dominated by CBM, but in the superficial part is nitrogen. The CBM content is gradually heighten from southeast to northwest in study area. And deeply discusses the influence of structural environment, the lithology of the roof and floor seam,magmatic rock, burial depth of coal seam and the thickness of bedrock overlying and hydrogeologic condition to CBM existence.
Estimate the CBM resources of study area and evaluate selection, consequently confirm that the deep coalfield of Huanghebei and its northern area can be the target area that can be explored and developed in future.
引文
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2.刘松良,郭剑萍.山东黄河北煤田岩浆岩特征及其对煤层煤质的影响[J].中国煤田地质,2003,15(6)：14-15
3.范士彦,魏怀习,范庆武.黄河北、章丘、淄博煤田煤层气开发前景[J].中国煤田地质,2001,13(4)：27-28
4.范士彦,武旭仁,郭剑萍.山东省黄河北煤田煤层气资源评价[J].中国地质,2001,28(6)：28-30
5.李明潮等.中国主要煤田的浅层煤成气[M].北京：科学出版社,1990
6.李明潮,梁生正,赵克镜.煤层气及勘探开发[M].北京：地质出版社,1996
7.张新民,张遂安,钟玲文等.中国的煤层甲烷[M].西安：陕西科学技术出版社,1991
8.张新民,庄军,张遂安,等.中国煤层气地质与资源评价[M].北京：科学出版社,2002
9.叶建平,秦勇,林大扬主编.中国煤层气资源[M].徐州：中国矿业大学出版社,1998
10.秦勇,曾勇.煤层甲烷储层评价及生产技术[M].徐州：中国矿业大学出版社,2000
11.张建博.煤层气富集成藏条件.李文阳,等主编.中国煤层气地质评价与勘探技术进展[J].徐州：中国矿业大学出版社,2001：20-25
12.唐书恒,汤达祯,杨起.二元气体等温吸附-解吸中气分的变化规律[J].中国矿业大学学报,2004,33(4)：448-452
13.王红岩,刘洪林,赵庆波,等编著.煤层气富集成藏规律[J].北京：石油工业出版社,2005.3
14.宋岩、张新民等.煤层气成藏机制及经济开采理论基础[M].北京：科学出版社,2005
15.李增学等.煤成(型)气地质学[M].北京：地质出版社,2007
16.李增学,魏久传,刘莹,等.煤地质学[M].北京：地质出版社,2005
17.苏现波,陈江峰,孙俊民,等.煤层气地质学与勘探开发[M].北京：科学出版社,2001
18.艾鲁尼,唐修义等.煤矿瓦斯动力现象的预测和预防[M].北京：煤炭工业出版社,1992
19.余申翰.煤层内瓦斯赋存形态[J].煤炭学报,1981,(2)：1-4
20.向奎,阎书忠.济阳坳陷煤型气源岩特征及资源前景[J].石油勘探与开发(5),1996
21.黄第藩,华阿新等译.煤成油地球化学新进展[M].北京：石油工业出版社,1992
22.唐修义.有关煤层气几个基本问题的认识[J].煤田地质与勘探,1996,24(3)：20-26
23.戴金星.中国煤成气研究二十年的重大进展[J].石油勘探与开发,1999,26(3)：1-9
24.冯士安,唐修义.具有瓦斯突出危险性的构造煤特征及意义[M].中国煤田地质,1998
25.焦作矿业学院瓦斯地质研究室.瓦斯地质概论[M].北京：煤炭工业出版社,1990
26.李增学,王明镇,李江涛.试论煤层气地质研究系统[M].山东科技大学学报(自然科学版),2003,22(4)：7-11
27.李增学,曹忠祥,王明镇,等.济阳坳陷石炭、二叠系埋藏条件及煤型气气源岩分布特征[J].煤田地质与勘探,2004,V32(4)：4-6
28.李增学,王明镇,曹忠祥,等.山东煤田地质特征及煤成气区划分析[J].《矿井地质与资源环境》—2004年全国矿井地质学术会议.2004,339-344
29.李增学,刘华,余继峰等.山东济阳石炭-二叠系煤成气储层沉积研究[J].沉积学报,2006,24(4)：502-510
30.李增学,曹忠祥,余继峰等.济阳坳陷煤成气富集成藏的盆地动力学特征[J].煤田地质与勘探,2006,(4)：26-29
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