本文主要研究内容
作者邓馨卉（2019）在《基于岩石物理与地震波传播参数相融合的页岩储层特征描述方法研究》一文中研究指出：作为非常规油气资源,对页岩油气勘探开发技术的需求正逐渐提高,而地球物理勘探技术是页岩油气资源评价的核心。页岩储层具有复杂的微观物性特征和宏观各向异性特征,针对页岩储层的地球物理方法研究具有重要意义。本文针对具有低孔低渗特性的致密页岩储层,进行了岩石物理和地震方法的研究与讨论,为页岩储层地球物理测井和地震评价、储层识别与描述技术的开发提供方法技术。在地震反演方法基础上进行定量地震解释是当前页岩油气藏描述的主要发展方向之一。因此在页岩油气储层的勘探方法研究中,以岩石物理学为基础,以地震正演、反演方法为有效的地球物理工具,进行相关的定性地震分析和定量地震解释研究,可为页岩油气储层的识别和描述提供丰富的地球物理信息和依据,对于地球物理勘探方法的改进和提升具有重要意义。页岩储层包括页岩气储层和页岩油储层,页岩储层的固有各向异性及水平层理发育使得储层呈现VTI(vertical transversely isotropy)各向异性,其微观结构特性差异引起了多种宏观各向异性特征。首先,针对具有VTI各向异性特征的页岩气储层的微观物性特征进行岩石物理方法和地震方法研究,以期能够通过对页岩气储层物性参数的预测为页岩甜点区描述提供基础。本文以龙马溪组页岩气储层为例,建立VTI各向异性岩石物理模型,基于模型进行储层物性参数井中岩石物理反演,并在BP神经网络框架下将反演结果应用于地震弹性参数的定量解释,将储层的岩石物理属性与地震波传播特性相融合,得到储层物性参数的空间分布,为页岩气储层甜点区识别提供方法与技术。首先,在页岩微观物性特征分析的基础上,抽象出关键物性参数,应用等效介质理论进行建模,建立复杂矿物组分、干酪根与流体组成的有机质混合物性质、有机质孔隙度等微观物性特征与页岩宏观VTI各向异性的定量关系。之后,基于岩石物理模型设计反演方法,应用模拟退火粒子群算法求解目标函数,由常规测井曲线反演有机质混合物纵横比、有机质孔隙度等储层物性参数及页岩VTI各向异性参数。最后,应用BP神经网络方法建立页岩物性参数与弹性参数的非线性映射关系,在此基础上对地震弹性反演结果进行定量解释,得到页岩物性参数的空间分布,可用于进一步分析页岩气储层孔隙连通性、页岩脆性、有机质成熟度及含气性等物性特征,为页岩甜点区的地震识别提供依据。针对发育有水平缝的页岩油储层物性特征作进一步研究,并基于岩石物理对页岩储层进行各向异性表征。页岩油储层中的水平缝作为页岩油存储和运移的空间,同时影响页岩油储层的VTI各向异性特征,因此,通过对页岩油储层中水平缝特性的研究,可为储层宏观各向异性特征描述和产油量评估提供方法。针对VTI各向异性介质进行研究,以Rüger提出的VTI介质反射系数理论公式为基础,提出了计算VTI各向异性参数和水平缝密度的VTI各向异性参数地震AVO反演算法,并将该反演算法应用于罗家地区页岩油储层中进行计算。首先,通过对罗家地区页岩油储层测井数据应用Backus平均方法,将数据从测井数据尺度粗化至高分辨率地震勘探数据尺度,并建立VTI各向异性等效模型。然后,将各向异性传播矩阵应用于等效模型中进行正演模拟,得到页岩油储层的地震AVO响应,综合测井资料、合成地震记录和实际地震资料进行井震标定。应用VTI各向异性参数地震AVO反演方法,结合前人计算的岩石物理反演结果,计算VTI各向异性参数ε与水平缝密度ε_H之间的拟合关系,以此对研究区的水平缝空间分布进行计算,并与实际油气资料进行对比,证明了反演方法的有效性。应用本文提出的VTI各向异性参数地震AVO反演方法计算水平缝的空间分布,为页岩油储层描述及油气产量预测提供了依据。考虑页岩油储层中发育的垂直裂缝,建立正交各向异性等效介质模型,引入方位信息进行全波场地震响应模拟进行研究。通过引入水平慢度将各向异性反射率法进行简化,并由此计算正交各向异性等效介质模型的地震AVAZ(amplitude versus azimuth)响应,结合模型分析垂直裂缝的特征及其对方位各向异性特征的影响。首先,建立上覆层各向异性特征有差异的两个正交各向异性等效模型,并应用简化的各向异性反射率法进行正演模拟,通过分析两个模型的地震AVAZ响应和方位振幅分布图,讨论上覆层各向异性特征差异对地震响应中方位各向异性特征的影响。然后,针对济阳坳陷罗家地区页岩油储层建立岩石物理模型。由于在页岩储层的VTI各向异性背景下发育有垂直裂缝,使储层具有等效正交各向异性特征,以等效正交各向异性介质作为模型。应用Backus平均理论将测井资料尺度的VTI各向异性粗化至高分辨率地震勘探资料尺度,并利用Schoenberg理论引入垂直裂缝,得到正交各向异性等效介质模型。之后,应用各向异性反射率法对所建立的模型进行全波场地震正演模拟,计算其AVAZ响应,并以振幅的方位特征对储层裂缝进行描述。通过分析PP波、PSV波和PSH波方位振幅响应的变化特征和方位振幅分布图的拟合形状,判断裂缝的发育方向,为页岩油储层中裂缝的地震方法识别提供基础。
Abstract
zuo wei fei chang gui you qi zi yuan ,dui xie yan you qi kan tan kai fa ji shu de xu qiu zheng zhu jian di gao ,er de qiu wu li kan tan ji shu shi xie yan you qi zi yuan ping jia de he xin 。xie yan chu ceng ju you fu za de wei guan wu xing te zheng he hong guan ge xiang yi xing te zheng ,zhen dui xie yan chu ceng de de qiu wu li fang fa yan jiu ju you chong yao yi yi 。ben wen zhen dui ju you di kong di shen te xing de zhi mi xie yan chu ceng ,jin hang le yan dan wu li he de zhen fang fa de yan jiu yu tao lun ,wei xie yan chu ceng de qiu wu li ce jing he de zhen ping jia 、chu ceng shi bie yu miao shu ji shu de kai fa di gong fang fa ji shu 。zai de zhen fan yan fang fa ji chu shang jin hang ding liang de zhen jie shi shi dang qian xie yan you qi cang miao shu de zhu yao fa zhan fang xiang zhi yi 。yin ci zai xie yan you qi chu ceng de kan tan fang fa yan jiu zhong ,yi yan dan wu li xue wei ji chu ,yi de zhen zheng yan 、fan yan fang fa wei you xiao de de qiu wu li gong ju ,jin hang xiang guan de ding xing de zhen fen xi he ding liang de zhen jie shi yan jiu ,ke wei xie yan you qi chu ceng de shi bie he miao shu di gong feng fu de de qiu wu li xin xi he yi ju ,dui yu de qiu wu li kan tan fang fa de gai jin he di sheng ju you chong yao yi yi 。xie yan chu ceng bao gua xie yan qi chu ceng he xie yan you chu ceng ,xie yan chu ceng de gu you ge xiang yi xing ji shui ping ceng li fa yo shi de chu ceng cheng xian VTI(vertical transversely isotropy)ge xiang yi xing ,ji wei guan jie gou te xing cha yi yin qi le duo chong hong guan ge xiang yi xing te zheng 。shou xian ,zhen dui ju you VTIge xiang yi xing te zheng de xie yan qi chu ceng de wei guan wu xing te zheng jin hang yan dan wu li fang fa he de zhen fang fa yan jiu ,yi ji neng gou tong guo dui xie yan qi chu ceng wu xing can shu de yu ce wei xie yan tian dian ou miao shu di gong ji chu 。ben wen yi long ma xi zu xie yan qi chu ceng wei li ,jian li VTIge xiang yi xing yan dan wu li mo xing ,ji yu mo xing jin hang chu ceng wu xing can shu jing zhong yan dan wu li fan yan ,bing zai BPshen jing wang lao kuang jia xia jiang fan yan jie guo ying yong yu de zhen dan xing can shu de ding liang jie shi ,jiang chu ceng de yan dan wu li shu xing yu de zhen bo chuan bo te xing xiang rong ge ,de dao chu ceng wu xing can shu de kong jian fen bu ,wei xie yan qi chu ceng tian dian ou shi bie di gong fang fa yu ji shu 。shou xian ,zai xie yan wei guan wu xing te zheng fen xi de ji chu shang ,chou xiang chu guan jian wu xing can shu ,ying yong deng xiao jie zhi li lun jin hang jian mo ,jian li fu za kuang wu zu fen 、gan lao gen yu liu ti zu cheng de you ji zhi hun ge wu xing zhi 、you ji zhi kong xi du deng wei guan wu xing te zheng yu xie yan hong guan VTIge xiang yi xing de ding liang guan ji 。zhi hou ,ji yu yan dan wu li mo xing she ji fan yan fang fa ,ying yong mo ni tui huo li zi qun suan fa qiu jie mu biao han shu ,you chang gui ce jing qu xian fan yan you ji zhi hun ge wu zong heng bi 、you ji zhi kong xi du deng chu ceng wu xing can shu ji xie yan VTIge xiang yi xing can shu 。zui hou ,ying yong BPshen jing wang lao fang fa jian li xie yan wu xing can shu yu dan xing can shu de fei xian xing ying she guan ji ,zai ci ji chu shang dui de zhen dan xing fan yan jie guo jin hang ding liang jie shi ,de dao xie yan wu xing can shu de kong jian fen bu ,ke yong yu jin yi bu fen xi xie yan qi chu ceng kong xi lian tong xing 、xie yan cui xing 、you ji zhi cheng shou du ji han qi xing deng wu xing te zheng ,wei xie yan tian dian ou de de zhen shi bie di gong yi ju 。zhen dui fa yo you shui ping feng de xie yan you chu ceng wu xing te zheng zuo jin yi bu yan jiu ,bing ji yu yan dan wu li dui xie yan chu ceng jin hang ge xiang yi xing biao zheng 。xie yan you chu ceng zhong de shui ping feng zuo wei xie yan you cun chu he yun yi de kong jian ,tong shi ying xiang xie yan you chu ceng de VTIge xiang yi xing te zheng ,yin ci ,tong guo dui xie yan you chu ceng zhong shui ping feng te xing de yan jiu ,ke wei chu ceng hong guan ge xiang yi xing te zheng miao shu he chan you liang ping gu di gong fang fa 。zhen dui VTIge xiang yi xing jie zhi jin hang yan jiu ,yi Rügerdi chu de VTIjie zhi fan she ji shu li lun gong shi wei ji chu ,di chu le ji suan VTIge xiang yi xing can shu he shui ping feng mi du de VTIge xiang yi xing can shu de zhen AVOfan yan suan fa ,bing jiang gai fan yan suan fa ying yong yu luo jia de ou xie yan you chu ceng zhong jin hang ji suan 。shou xian ,tong guo dui luo jia de ou xie yan you chu ceng ce jing shu ju ying yong Backusping jun fang fa ,jiang shu ju cong ce jing shu ju che du cu hua zhi gao fen bian lv de zhen kan tan shu ju che du ,bing jian li VTIge xiang yi xing deng xiao mo xing 。ran hou ,jiang ge xiang yi xing chuan bo ju zhen ying yong yu deng xiao mo xing zhong jin hang zheng yan mo ni ,de dao xie yan you chu ceng de de zhen AVOxiang ying ,zeng ge ce jing zi liao 、ge cheng de zhen ji lu he shi ji de zhen zi liao jin hang jing zhen biao ding 。ying yong VTIge xiang yi xing can shu de zhen AVOfan yan fang fa ,jie ge qian ren ji suan de yan dan wu li fan yan jie guo ,ji suan VTIge xiang yi xing can shu εyu shui ping feng mi du ε_Hzhi jian de ni ge guan ji ,yi ci dui yan jiu ou de shui ping feng kong jian fen bu jin hang ji suan ,bing yu shi ji you qi zi liao jin hang dui bi ,zheng ming le fan yan fang fa de you xiao xing 。ying yong ben wen di chu de VTIge xiang yi xing can shu de zhen AVOfan yan fang fa ji suan shui ping feng de kong jian fen bu ,wei xie yan you chu ceng miao shu ji you qi chan liang yu ce di gong le yi ju 。kao lv xie yan you chu ceng zhong fa yo de chui zhi lie feng ,jian li zheng jiao ge xiang yi xing deng xiao jie zhi mo xing ,yin ru fang wei xin xi jin hang quan bo chang de zhen xiang ying mo ni jin hang yan jiu 。tong guo yin ru shui ping man du jiang ge xiang yi xing fan she lv fa jin hang jian hua ,bing you ci ji suan zheng jiao ge xiang yi xing deng xiao jie zhi mo xing de de zhen AVAZ(amplitude versus azimuth)xiang ying ,jie ge mo xing fen xi chui zhi lie feng de te zheng ji ji dui fang wei ge xiang yi xing te zheng de ying xiang 。shou xian ,jian li shang fu ceng ge xiang yi xing te zheng you cha yi de liang ge zheng jiao ge xiang yi xing deng xiao mo xing ,bing ying yong jian hua de ge xiang yi xing fan she lv fa jin hang zheng yan mo ni ,tong guo fen xi liang ge mo xing de de zhen AVAZxiang ying he fang wei zhen fu fen bu tu ,tao lun shang fu ceng ge xiang yi xing te zheng cha yi dui de zhen xiang ying zhong fang wei ge xiang yi xing te zheng de ying xiang 。ran hou ,zhen dui ji yang ao xian luo jia de ou xie yan you chu ceng jian li yan dan wu li mo xing 。you yu zai xie yan chu ceng de VTIge xiang yi xing bei jing xia fa yo you chui zhi lie feng ,shi chu ceng ju you deng xiao zheng jiao ge xiang yi xing te zheng ,yi deng xiao zheng jiao ge xiang yi xing jie zhi zuo wei mo xing 。ying yong Backusping jun li lun jiang ce jing zi liao che du de VTIge xiang yi xing cu hua zhi gao fen bian lv de zhen kan tan zi liao che du ,bing li yong Schoenbergli lun yin ru chui zhi lie feng ,de dao zheng jiao ge xiang yi xing deng xiao jie zhi mo xing 。zhi hou ,ying yong ge xiang yi xing fan she lv fa dui suo jian li de mo xing jin hang quan bo chang de zhen zheng yan mo ni ,ji suan ji AVAZxiang ying ,bing yi zhen fu de fang wei te zheng dui chu ceng lie feng jin hang miao shu 。tong guo fen xi PPbo 、PSVbo he PSHbo fang wei zhen fu xiang ying de bian hua te zheng he fang wei zhen fu fen bu tu de ni ge xing zhuang ,pan duan lie feng de fa yo fang xiang ,wei xie yan you chu ceng zhong lie feng de de zhen fang fa shi bie di gong ji chu 。
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论文作者分别是来自吉林大学的邓馨卉，发表于刊物吉林大学2019-06-25论文，是一篇关于页岩储层论文,岩石物理论文,地震正演方法论文,地震反演算法论文,定量地震解释论文,储层描述论文,吉林大学2019-06-25论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自吉林大学2019-06-25论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：页岩储层论文; 岩石物理论文; 地震正演方法论文; 地震反演算法论文; 定量地震解释论文; 储层描述论文; 吉林大学2019-06-25论文;