自然伽马能谱测井在油田中的应用研究

发布时间：2018-05-02 00:48

本文选题：自然伽马能谱 + 岩性识别　；参考：《延安大学学报(自然科学版)》2016年04期

【摘要】：随着对油气勘探开发的不断深入,勘探对象复杂,给测井解释评价带来极大的挑战。由于目前反映岩石中主要放射性元素铀(U)、钍(Th)和钾(K),所产生的总放射性用自然伽马测井(GR)已不能提供丰富的测井信息,因此,利用自然伽马能谱测井(NGS)对U、Th、K放射性的分析应用研究备受关注。本文利用自然伽马能谱测井对YN油田的岩性识别、生油岩评价、沉积环境评价及粘土类型识别进行了研究。结果表明K-Th识别图版识别岩性较好;YN油田延长组下组合长8、长9的泥岩具一定生油能力;建立的自然伽马能谱粘土识别三维图克服了二维坐标中高岭石、蒙脱石、绿泥石及伊利石总有交错区间的缺陷,在自然伽马能谱应用中属首创。
[Abstract]:With the continuous exploration and development of oil and gas, the complexity of the exploration object brings great challenge to the logging interpretation and evaluation. As the main radioactive elements in the rock, uranium (U), thorium (Th) and potassium (K), the total radioactive natural gamma logging (GR) can not provide rich logging information. Therefore, the natural gamma ray spectrometry is used. Well (NGS) has attracted much attention to the analysis and application of radioactivity of U, Th and K. This paper uses natural gamma ray spectrometry logging to study lithology identification, oil source rock evaluation, sedimentary environment evaluation and clay type identification in YN oilfield. The results show that the lithology of K-Th identification plate recognition is good, and the combination of the long group under the lengthening group of the YN oilfield is 8 and the long 9 of the mudstone has certain birth. The natural gamma ray spectrum clay recognition 3D graph overcomes the defects of kaolinite, montmorillonite, chlorite and illite in the two-dimensional coordinates, which are the first in the application of natural gamma spectrum.

【作者单位】：延长油田股份有限公司勘探开发技术研究中心;延长油田股份有限公司富县采油厂;
【分类号】：P618.13;P631.81

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