构造煤随钻判识基础研究
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摘要
通过对构造煤和原生结构煤的电学性质、煤体密度和煤体强度等物性的研究,认为构造煤相对于原生结构煤具有低电阻率、低密度和低强度等显著特征,分析了其物性差异的根源和主要影响因素,并在实验室和井下对多个矿井构造煤和原生结构煤的电阻率、密度和坚固性系数等各项物性参数进行测定,验证其差异的真实性及大小,为判识构造煤提供确凿的数据和理论依据。
在对井下水平钻井工艺、工况条件和成孔模型的考察下,提出了将测井技术和钻井技术有效结合,依靠随钻测量煤体响应参数来判识构造煤的新技术。对判识参数随钻测量的可行性进行分析,确定了能够随钻测量的物性参数和测井方式。
在分析焦作矿区大量常规竖直井测井曲线上煤层井段的响应特征的基础上,提取了大量构造煤和原生结构煤的各参数响应值,并总结了其值域范围。利用提取的参数响应值及值域,对水平井随钻测量时不同参数所对应的测井曲线响应特征进行了正演分析,绘制了理想测井曲线,认为综合测井曲线来判识构造煤效果更佳,并总结了综合测井曲线判识构造煤的基本准则。
Through the research of the electrical properties, density, strength and other objects of deformed coal and undeformed coal, it is considered that deformed coal contains salient features of low resistivity, low density and low strength compared with undeformed coal, then analyzed the root causes of those differences in physical properties and the main influencing factors between them. In order to provide tangible data and theoretical basis for identifying deformed coal from, the physical parameters of coal resistivity, density and robustness coefficient were measured to verify the authenticity and size of their differences in the laboratory and underground of many coal mines.
Through investigating horizontal drilling technology, working conditions and drilling model in the underground, new technology that integrating logging and drilling technology effectively was proposed, it can identify deformed coal through measuring response parameters of coal while drilling. Then analyzed the feasibility of measuring parameters while drilling, determined the parameters that can be measured while drilling and corresponding logging methods.
On the basis of analyzing response features of abundant logging curves on the coal seam segment of conventional vertical well of Jiaozuo Mining Area, xtracted the response value of various parameters of deformed coal and undeformed coal, and summarized their range. In use of the response value and their range, response features of various logging curves were forward analyzed when measuring while drilling in horizontal well, and drawn the perfect logging curves. It is considered that the method of identifying deformed coal by comprehensive logging curves is better than others, and summarized the basic norms of identifying deformed coal through comprehensive logging curves.
在对井下水平钻井工艺、工况条件和成孔模型的考察下,提出了将测井技术和钻井技术有效结合,依靠随钻测量煤体响应参数来判识构造煤的新技术。对判识参数随钻测量的可行性进行分析,确定了能够随钻测量的物性参数和测井方式。
在分析焦作矿区大量常规竖直井测井曲线上煤层井段的响应特征的基础上,提取了大量构造煤和原生结构煤的各参数响应值,并总结了其值域范围。利用提取的参数响应值及值域,对水平井随钻测量时不同参数所对应的测井曲线响应特征进行了正演分析,绘制了理想测井曲线,认为综合测井曲线来判识构造煤效果更佳,并总结了综合测井曲线判识构造煤的基本准则。
Through the research of the electrical properties, density, strength and other objects of deformed coal and undeformed coal, it is considered that deformed coal contains salient features of low resistivity, low density and low strength compared with undeformed coal, then analyzed the root causes of those differences in physical properties and the main influencing factors between them. In order to provide tangible data and theoretical basis for identifying deformed coal from, the physical parameters of coal resistivity, density and robustness coefficient were measured to verify the authenticity and size of their differences in the laboratory and underground of many coal mines.
Through investigating horizontal drilling technology, working conditions and drilling model in the underground, new technology that integrating logging and drilling technology effectively was proposed, it can identify deformed coal through measuring response parameters of coal while drilling. Then analyzed the feasibility of measuring parameters while drilling, determined the parameters that can be measured while drilling and corresponding logging methods.
On the basis of analyzing response features of abundant logging curves on the coal seam segment of conventional vertical well of Jiaozuo Mining Area, xtracted the response value of various parameters of deformed coal and undeformed coal, and summarized their range. In use of the response value and their range, response features of various logging curves were forward analyzed when measuring while drilling in horizontal well, and drawn the perfect logging curves. It is considered that the method of identifying deformed coal by comprehensive logging curves is better than others, and summarized the basic norms of identifying deformed coal through comprehensive logging curves.
引文
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[17]张玉贵,曹运兴,李凯琦,等.构造煤顺磁共振波谱特征初探[J].焦作工学院学报,1997,16(2):37-40
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[19]姜波,秦勇,金法礼.高温高压实验变形煤XRD结构演化[J].煤炭学报,1998,23(2):
[20]张玉贵,张子敏,谢克昌.煤演化过程中力化学作用与构造煤结构[J].河南理工大学学报,2005,24(2):95-99
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[22]姜波,琚宜文.构造煤结构及其储层物性特征[J].天然气工业,2004,24(5):
[23]琚宜文,姜波,侯泉林,等.构造煤结构-成因新分类及其地质意义[J].煤炭学报,2004,29(5):
[24]徐耀奇,石淑娴,任玉琴.突出煤与非突出煤的结构探讨[J].煤矿安全,1980,1(11):10-15
[25]徐宏武.煤层电性参数测试和研究[J].煤田地质勘探,1996,24(2):53-56
[26]徐龙君,刘成伦,鲜学福.煤导电性质的分形特征[J].煤炭转化,2001,24(1):50-52
[27]张广洋,谭学术,杜贵云,等.煤的导电机理研究[J].湘潭矿业学院学报,1995,10(1):15-18.
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[29]康建宁,邹银辉.煤的电导率随瓦斯压力变化关系的研究[J].矿业安全与环保,2005,32(2).1-3
[30]康建宁,黄学满.煤的电性参数与瓦斯突出危险性之间关系研究[J].煤炭科学技术,2005,33(1.)56-59
[31]杜云贵,鲜学福,谭学术,等.南桐煤的导电性质研究[J].重庆大学学报,1993,16(3)145-148
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[33]吕绍林,何继善.瓦斯突出煤体的导电性质研究[J].中南工业大学学报,1998,29(6):511-514
[34]吕绍林.超声波探测瓦斯突出煤体[J].煤炭工程师,1997,(3):15-18
[35]何建坤.焦作矿区构造特征对煤与瓦斯突出的控制:[硕士学位论文].徐州:中国矿业大学,1987.
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