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白音查干凹陷腾格尔组层序地层测井响应特征 被引量:3

Well logging response characteristic of sequence stratigraphy in tengge'er formation of Baiyinchagan depression
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摘要 依据可容空间(A)与沉积供给(S)比值的测井响应特征,结合标志层的特点,进行层序界面的类型划分、识别和测井响应特征的研究,并依据测井曲线的叠加样式,进行层序地层测井响应特征的研究。研究结果表明,白音查干凹陷腾格尔组层序界面位于测井曲线基值发生明显改变的转折点上,大型河道冲刷面和进积与退积的相互转换面也是层序界面的发育位置。最大湖泛面岩性表现为泥岩,在测井曲线上表现为高自然伽马(GR)、低自然电位(SP)、低电阻率(RT)的特点。层序地层的测井响应特征中,进积类型测井曲线呈现漏斗型,表现为曲线的幅值由下向上依次增大的特征;退积类型测井曲线呈现钟形,表现为曲线的幅值由下向上依次减少的特征;加积类型测井曲线呈现箱型,表现为曲线的幅值变化不大。 The type and well logging responses of sequence surface have been divided and recognized, according to well logging response characteristics by ratio of accommodation space (A) to sedimentary supply(S) , joining with the characteristics of the key stratum. Well logging responses of sequence stratigraphy have been studied according to the stacking patterns of well logging curve. The results show that the sequence surface in Tengge'er formation of Baiyinchagan depression located at the turning point in which the base value of well logging curve have changed obviously, and the erosion surface of large channel and the convert surface of progradation and retrogradation are the places of sequence surface development. Lithology of maximum flooding surface is mudstone, with the features of high nature gamma (GR), low self potential(SP), low resistivity(RT) in well logging curve. Related to the well logging response characteristics of sequence stratigraphy, progradation type present as funnel in well logging curves, with the feature of increased curve amplitude from bottom to up, regressive type present as bell in well logging curves, with the feature of decreased curve amplitude from bottom to up. Aggradation type of logging curves present as cylinder, showing little change in the amplitude of the curve.
作者 冯希文
出处 《西安科技大学学报》 CAS 北大核心 2011年第4期443-447,458,共6页 Journal of Xi’an University of Science and Technology
基金 国家自然科学基金资助项目(41072110) 陕西省自然科学研究计划项目(SJ08D06) 陕西省教育厅自然科学研究计划项目(09JK575)
关键词 测井 A/S值 层序界面 层序地层 测井响应 well logging A/S value sequence surface sequence stratigraphy well logging response
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