| 中子和密度测井找气的一种特殊解释方法 |
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| 引用本文： | 谭廷栋. 中子和密度测井找气的一种特殊解释方法[J]. 石油学报, 1992, 13(4): 31-40. DOI: 10.7623/syxb199204004 |
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| 作者姓名： | 谭廷栋 |
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| 作者单位： | 石油勘探开发科学研究院 北京 |
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| 摘 要： | 针对钙泥质砂岩气层孔隙度低和岩性复杂的地质特点,提出一种中子和密度测井找气的特殊解释方法,排除了岩性变化引起的多解性;引入气层中子和密度孔隙度下限值概念,提高了中子和密度测井找气的直观性。同时,又引入气层含水饱和度下限值作验证,提高了中子和密度测井找气的准确性。应用效果表明,该法对解释钙泥质砂岩气层有良好的效果。
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| 关 键 词： | 测井找气 中子孔隙度 密度孔隙度 测井解释 钙泥质砂岩气层 |
| 收稿时间： | 1991-01-09 |
A SPECIAL INTERPRETATION METHOD FOR GAS FINDING BY NEUTRON AND DENSITY LOG |
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| Tang Tingdong. A SPECIAL INTERPRETATION METHOD FOR GAS FINDING BY NEUTRON AND DENSITY LOG[J]. Acta Petrolei Sinica, 1992, 13(4): 31-40. DOI: 10.7623/syxb199204004 |
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| Authors: | Tang Tingdong |
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| Affiliation: | Research Institute of Petroleum Exploration and Development Beijing |
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| Abstract: | A special interpretation method suggested in this paper can indicate calcitic shaly sand gas formation which has the characteristics of low porosity and complex lithology and can eliminate multi-solution in log interpretation.The concept of gas-bearing formation cut-off value and the way to identify gas zones by the water saturation cut-off value in gas-bearing formation improve the efficiency and accuracy of gas finding by acombination of neutron and density log.ctual examples show that the result is satisfactory. |
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