焦石坝页岩储层矿物含量测井计算方法探讨
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摘要
页岩储层的矿物组分与含量是影响储层压裂的重要因素。页岩储层矿物含量纵向上变化大,矿物组分复杂,测井资料具有纵向分辨率高的特点,利用测井资料能较好地评价页岩储矿物,指导储层改造。目前主要有四种页岩储层矿物含量的测井计算方法 :复杂岩性分析CRA法、ELAN最优化模型分析法、ECS测井计算法和经验统计法。这四种方法适用范围不同,在勘探初期缺少岩心实验资料时,CRA法和ELAN法适合应用,但这两种方法的计算结果精度相对偏低;ECS测井资料可用于地层矿物含量的计算,但ECS测井费用相对昂贵,普遍应用会增加勘探成本;常规测井资料和岩心实验资料丰富时适合使用经验统计法,该方法具有较好的地区适用性,解释精度较高。在不同的勘探阶段和不同的资料录取情况下选择合适的方法不仅有利于勘探效果的提升,也有利于勘探成本的控制。
Mineral component and content of shale reservoirs are the important factors influencing reservoir fracturing.The mineral content is various on the vertical and the component is complex,which shows high vertical resolution on the logging data.The logging data can be used for mineral evaluation and reservoir refor-mation guide.At present,there are four logging calculation methods of shale reservoir mineral including tradi-tional complex lithology analysis method(CRA),ELAN optimization model analysis method and ECS logging calculation method and empirical method.They were applied at various ranges.CRA and ELAN method are suitable when lacking of core experiment data in the initial exploration,but the accuracy of their results is relatively low.ECS logging data can be used to calculate mineral content of the formations,but universal application will increase the cost of exploration for expensive ECS logging.The empirical method is applicable when conventional logging and core experiment data are plentiful,which has good effect and high interpretation accuracy in the study area.Various methods may be selected in various exploration stages and on differ-ent data acquisition conditions.It not only enhances the exploration effect,but also is beneficial to control the exploration cost.
Mineral component and content of shale reservoirs are the important factors influencing reservoir fracturing.The mineral content is various on the vertical and the component is complex,which shows high vertical resolution on the logging data.The logging data can be used for mineral evaluation and reservoir refor-mation guide.At present,there are four logging calculation methods of shale reservoir mineral including tradi-tional complex lithology analysis method(CRA),ELAN optimization model analysis method and ECS logging calculation method and empirical method.They were applied at various ranges.CRA and ELAN method are suitable when lacking of core experiment data in the initial exploration,but the accuracy of their results is relatively low.ECS logging data can be used to calculate mineral content of the formations,but universal application will increase the cost of exploration for expensive ECS logging.The empirical method is applicable when conventional logging and core experiment data are plentiful,which has good effect and high interpretation accuracy in the study area.Various methods may be selected in various exploration stages and on differ-ent data acquisition conditions.It not only enhances the exploration effect,but also is beneficial to control the exploration cost.
引文
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[3]付永强,马发明,曾立新,等.页岩气储层压裂实验评价关键技术[J].天然气工业,2011,31(4):51-54.
[4]姜政华,童胜宝,丁锦鹤.彭页HF-1页岩气水平井钻井关键技术[J].石油钻探技术,2012,40(4):28-31.
[5]董丙响,程远方,刘浴川,等.页岩气储层岩石物理性质[J].西安石油大学学报:自然科学版,2013,28(1):25-28,36.
[6]蒋裕强,董大忠,漆麟,等.页岩气储层的基本特征及其评价[J].天然气工业,2010,30(10):7-12.
[7]郭彤楼,刘若冰.复杂构造区高演化程度海相页岩气勘探突破的启示-以四川盆地东部盆缘JY1井为例[J].天然气地球科学,2013,24(4):643-651.
[8]梁超,姜在兴,杨镱婷,等.四川盆地五峰组-龙马溪组页岩岩相及储集空间特征[J].石油勘探与开发,2012,39(6):691-698.
[9]郭旭升,郭彤楼,魏志红,等.中国南方页岩气勘探评价的几点思考[J].中国工程科学,2012,14(6):101-105.
[10]王庆波,刘若冰,李春燕,等.四川盆地及周缘五峰-龙马溪组页岩气地质条件研究[J].重庆科技学院学报:自然科学版,2012,14(5):17-21.
[11]雍世和,张超谟.测井数据处理与综合解释[M].东营:中国石油大学出版社,2007:313-317.
[12]高楚桥,张超谟,钟兴水.ELAN解释(程序)方法简析[J].测井技术,1995,19(2):135-139.
[13]刘绪刚,孙建孟,郭云峰.元素俘获测井在储层综合评价中的应用[J].测井技术,2005,29(3):236-240.
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