湖相泥页岩地球化学参数测井计算方法及应用——以沾化凹陷渤南洼陷沙三下亚段为例

发布时间：2018-03-30 21:48

  本文选题：测井计算　切入点：地球化学参数　出处：《岩性油气藏》2017年04期

【摘要】：地球化学指标是烃源岩及非常规页岩储层研究的重要参数,该类型参数对烃源岩的生烃潜力评估及储层有效性评价均具有重要意义。采用Passey经典公式计算济阳坳陷沾化凹陷渤南洼陷沙三下亚段(E s_3)湖相泥页岩地层总有机碳含量(TOC)时误差较大,通过重新分析TOC与测井响应之间的关系,发现TOC与三孔隙度曲线的相关性较好。在此基础上,先分岩性(油泥岩、泥岩和油页岩)建立TOC计算模型,计算精度得到明显提高;再根据TOC和深度(D)间接建立热解烃(S_2)、氢指数(HI)及最高裂解温度(T_(max))等参数的计算模型,利用解释出的连续HI,T_(max)及TOC等数据,定量评价干酪根类型及有机质丰度;最终结合由测井资料计算而得到的矿物组分、物性参数等信息,有效地识别出地层剖面中富含的Ⅰ型和Ⅱ1型有机质泥页岩岩相。该研究成果为济阳坳陷沾化凹陷渤南洼陷沙三下亚段湖相泥页岩有利储层预测提供了理论基础。
[Abstract]:Geochemical index is an important parameter in the study of source rock and unconventional shale reservoir. This type of parameter is of great significance for hydrocarbon generation potential assessment and reservoir effectiveness evaluation of source rocks. Using Passey's classical formula to calculate the total organic properties of the lacustrine shale shale strata in the lower member of the third lower section of the Bonan sag in Zhanhua depression, Jiyang depression. The error of carbon content is larger than that of TOC. By re-analyzing the relationship between TOC and logging response, it is found that the correlation between TOC and three-porosity curve is good. On the basis of this, the TOC calculation model is established by dividing lithology (mudstone, mudstone and oil shale), and the calculation accuracy is improved obviously. Based on TOC and depth D), the calculation models of pyrolytic hydrocarbon S2H, H _ 2 index and maximum pyrolysis temperature (T _ T _ (max)) were established. The data of continuous Hippon _ T _ (max)) and TOC were used to quantitatively evaluate the kerogen type and the abundance of organic matter. Finally, combined with the information of mineral components, physical properties and other parameters calculated from logging data, The mudstone facies of type 鈪，

本文编号：1687786