Application of X-ray fluorescence logging technique in lithologic identification:A case study in wells YB10 and YB22, Yuanba region, northeast Sichuan Basin
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摘要: 随着川东北元坝地区空气钻、PDC和孕镶钻头+高速螺杆钻井新工艺的大量运用,钻时快、岩屑细碎甚至呈粉末状的特点,给常规录井工艺带来了岩性识别难、地层界线不易判断的问题。X射线荧光录井技术具有完全不受岩屑颗粒直径限制、分析周期短的特点。通过分析岩样中镁、铝、钾、硅、硫、钙、铁等14种元素的含量来判断岩性和识别地层,弥补了常规录井的不足。其中,YB10井在井段702～7155m通过采用X射线荧光录井技术,现场共分析样品4 115个,根据元素含量、曲线变化特征,结合露头岩性资料,对陆相砂、泥岩和海相碳酸盐岩进行井下岩性识别,经与电测资料对比吻合度达92.60%。Abstract: New techniques such as air drilling,PDC and impregnated bit + fast-spiral screw have been practiced widely in Yuanba region of the northeast Sichuan Basin;however,fast drilling and fine or even powdered detritus have made it difficult to identify lithologic characters and formation boundaries for common well-logging.The X-ray fluorescence logging technique is not restricted by small detritus size or short analysis period.It deals with the contents of 14 elements such as Mg,Al,K,Si,S,Ca and Fe in rock samples so as to analyze lithologic features and to identify formation boundaries.The new technique was practiced in well YB10.4 115 samples collected from 702-7155 m deep were analyzed.According to element contents and curve changes,combined with outcrop lithologic data,continental sandstone and mudstone as well as marine carbonate rock were distinguished.The results were accordant with electric logging data in 92.60%.
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[1] 马永生.碳酸盐岩微相:分析、解释及应用[M].北京:地质出版社,3006. [2] 马永生,牟传龙,郭旭升,等.四川盆地东北部长兴期沉积特征与沉积格局[J].地质论评.2006,52(1):25-29. [3] 陈洪德,庞林,倪新锋,等.中上扬子地区海相油气勘探前景[J].石油实验地质,2007,29(1):13-18. [4] 熊有全.川东地区普光气田深井钻井技术[J].当代石油石化,2006,14 (8):11-15. [5] 刘仲华.川东北地区钻井施工的几点认识[J].钻采工艺,2005,28(3):21-24. [6] 孙起昱,张雨生,王爱芳,等.空气锤在普光气田气体钻井中的应用[J].石油钻探技术,2009,37(43):68-72. [7] 窦立荣,王一刚.中国古生界海相碳酸盐岩油气藏的形成与分布[J].石油实验地质,2003,25 (5):419-425. [8] 马永生,郭旭升,凡睿.川东北普光气田飞仙关组鲕滩储集层预测[J].石油勘探与开发,2005,32(4):60-64. [9] 马永生,傅强,郭彤楼.川东北地区普光气田长兴-飞仙关气藏成藏模式与成藏过程[J].石油实验地质,2005,27(5):455- 461. [10] 王恕一,蒋小琼,管宏林,等.川东北普光气田下三叠统飞仙关组储层成岩作用研究[J].石油实验地质,2010,32(4):366-371. [11] 王一刚,刘划一,文应初,等.川东北飞仙关组鲕滩储层分布规律、勘探方法与远景预测[J].天然气工业,2002,22(增刊):14 -19. [12] 李阳,石兴春.地质监督手册[M].北京:中国石化出版社,2008. [13] 何莹,黎平,杨宇,等.通南巴地区上二叠统一下三叠统层序地层划分[J].天然气工业,2007,27 (6):22-26. [14] 吴萍,陈光碧,李成,等.川东北地区嘉一段一上二叠统录井分层探讨[J].天然气工业,2007,27 (11):12-15. [15] 刘光祥.中上扬子北缘中古生界海相烃源岩特征[J].石油实验地质,2005,27 (5):490-495. -
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