【作者】 张松扬；

【导师】 范宜仁；

【作者基本信息】 中国石油大学 ， 地质资源与地质工程， 2007， 博士

【摘要】 《致密砂岩气层测井特征参数提取方法研究及识别评价技术》由中国石油化工股份有限公司重大科学技术研究开发项目《上古生界致密砂岩气层测井识别及精细评价技术研究》(合同编号:P04016,起止时间:2004~2006年)资助完成。研究靶区位于鄂尔多斯盆地塔巴庙区块,研究层位为石炭-二叠系。依据塔巴庙区块上古生界致密储层各种地质、试井成果等的资料,从常规测井响应特征分析入手,提取建立了一套直观识别评价储层特征的分类比值参数,即“四性”测井特征参数:岩性比值参数、电性比值参数、物性比值参数和含气综合特征指数。为利用测井资料对储层进行精细评价提供了技术条件。在分区开展储层岩性、电性、物性、沉积环境和含气性及展布情况研究的基础上进行多井综合对比,建立了一套气层分类识别方法及评价模式,分区、分组段将储集层(盒3、盒2、盒1、山2、山1、太2)划分为五类:高产气层(Ⅰ)、中产气层(Ⅱ)、低产气层(Ⅲ)、含水(气)层(Ⅳ)和干层。比较深入地研究分析了流体判别标准的适用性,见到了良好的效果。针对塔巴庙区块上古生界主要含气层系,探索建立了两套气层无阻流量测井预测模式:从气层测井分类比值法出发,用K参数建立了气层测井产能计算关系;从测井响应特征出发,用数学合成法建立了气层测井产能优化组合模式。为正确评价上古生界天然气储层完成10亿方产能建设奠定了基础。选择区块各井区测试井作为关键井,根据关键井测试层测井参数与地质资料的对比分析,绘制了太原组、山西组、盒1段和盒2+3段测井有效厚度、有效孔隙度、渗透率、含气饱和度和无阻流量的等值二维平面分布关系,并以此对塔巴庙区块天然气富集区进行评述,指出了天然气富集的有利层位和勘探方向。更多还原

【Abstract】 A method for extracting log characteristic parameters and evaluation tenique of tight sandstone gas reservoir is aided financially by the important science technology research and develop item a research on log identification and fine evaluation of Neopaleozoic tight sandstone gas reservoir. The contract number is P04016 and it takes two years from 2004 to 2006. The research target area lies in the Tabamiao region of Ordos basin and the intended zone is Permo-Carboniferous.According to the geology and well test data of Neopaleozoic tight reservoir in Tabamiao region, we begin with the conventional log response characteristic analysis and extract the classification ratio parameters to visual identify and evaluate reservoir characteristic. That is the lithologic, electric and physical ratio parameters and gas synthetical characteristic exponent. It offers the technical condition for the reservoir fine evaluation with log data.Based on the research of reservoir lithology, electric property, physical property, depositional environment, gas property and distribution in different area, the multiwell synthetical comparison is carried on. A pattern of gas reservoir classify identification and evaluation is offered. Then we divide the reservoir (He3, He2, He1, Shan2, Shan1, Tai2) into five types in different region and formation. That is high production gas(Ⅰ), middle production gas(Ⅱ), low production gas(Ⅲ), water content gas(Ⅳ) and dry. Further study and analysis on the applicability of fluid distinguish criterion shows good effect. For Neopaleozoic gas reservoir system, we make advanced research and set up two suits of gas AOF log predictive intermode. Use gas log classification ratio method, the gas log deliverability calculation relationship is set up with K parameter. Based on log response characteristic, the gas log deliverability optimal combination mode is set up with mathematic synthesis method. It settles the foundation for correctly evaluating ten hundred million deliverability of Neopaleozoic gas reservoir.Choose the test wells in different well fields as key wells. By comparative analysizing the log parameters and geologic information of test zones, we make the equivalent 2D plane distribution relationship of log net thickness, effective porosity, permeability, gas saturation and AOF in Taiyuan, Shanxi, He1 and He2+3. In view of the above we evaluate the Tabamiao gas concentrated block and indicate the gas concentrated payable zone and exploratory orientation.更多还原