基准面旋回对河流相储层物性差异及声波测井影响

梁宏伟; 吴胜和; 穆龙新; 岳大力; 李宇鹏; 印森林; 喻宸

doi:10.3799/dqkx.2013.113

基准面旋回对河流相储层物性差异及声波测井影响

doi: 10.3799/dqkx.2013.113

梁宏伟^{1, 2,},
吴胜和^{2, 3},
穆龙新¹,
岳大力^{2, 3},
李宇鹏^{2, 3},
印森林^{2, 3},
喻宸^{2, 3}

1.
中国石油勘探开发研究院，北京 100083
2.
中国石油大学地球科学学院，北京 102249
3.
中国石油大学油气资源与探测国家重点实验室，北京 102249

基金项目:

国家科技重大专项 2011ZX05011-001

国家科技重大专项 2011ZX05024-001

国家自然科学青年科学基金项目 40902035

详细信息

作者简介:
梁宏伟(1985-)，男，博士，主要从事油气储层预测、油气藏描述研究.E-mail：574504695@qq.com

中图分类号: TE143
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出版历程
- 收稿日期: 2012-06-18
- 刊出日期: 2013-09-15

Base Level Cyclic Controls on the Fluvial Reservoir Physical Properties and Sonic Logging Response

LIANG Hong-wei^{1, 2
,},
WU Sheng-he^{2, 3},
MU Long-xin¹,
YUE Da-li^{2, 3},
LI Yu-peng^{2, 3},
YIN Sen-lin^{2, 3},
YU Chen^{2, 3}

1.
Research Institute of Petroleum Exploration and Development, Beijing 100083, China
2.
College of Geosciences, China University of Petroleum, Beijing 102249, China
3.
State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China

摘要

摘要: 为揭示基准面旋回对不同旋回阶段河流相储层物性差异及声波时差测井响应的影响，运用基准面旋回沉积动力学原理，对岩心分析化验数据等实测资料进行分析，对孤岛油田中一区馆陶组上段3砂层组河流相储层物性差异主控因素进行分析，明确了基准面旋回对河道微相在不同旋回阶段储层物性差异和声波测井响应的控制机理，并确定了不同级次基准面旋回内河道储层物性分布特征和声波测井响应差异.结果表明：不同级次基准面升降引起可容纳空间与物源供给条件的改变，导致不同旋回阶段河道储层沉积环境出现差异，使短期基准面旋回内部单河道内部储层物性正韵律分布、声波测井响应差异不大；中期基准面旋回中组成复合河道的多期单河道间储层物性自下向上呈总体变好趋势、声波测井响应有异；长期基准面旋回中多期复合河道间储层物性呈无规则分布、声波测井响应差异明显.
- 基准面旋回 /
- 测井响应 /
- 孤岛油田 /
- 河道 /
- 沉积物 /
- 储层物性
Abstract: To identify the influence of base level cycle on the differences of the fluvial reservoir physical properties and logging response among the same type of microfacies in different stages of base level cycle, the main controlling factors on the fluvial reservoir physical properties of the channel in the upper member of Guantao Formation of Gudao oilfield are analyzed based on the sediment dynamic analysis of the high resolution stratigraphic sequence and the quantitative analysis of the core testing, statistical data. The control mechanism of base level cycle on the differences of the reservoir differences and logging response among the channel in different stages of base level cycle is identified. The pattern of the reservoir differences and logging response among the channel in different stages of base level cycle is confirmed. The results show that the diversity of sedimentary environment of channel in different stages of base level cycle causes the variation of accommodate space and sediment supply due to the changes of the base level in different scales, the reservoir quality of the upper part of the single channel in short-term base level cycle is lower than that of the basal part, and the logging response of single channel is similar. The reservoir quality of the upper part of the compound channel(formed by different single channels)in middle-term base level cycle is lower than that of the basal part, and the logging response of different single channel is distinct. The reservoir property and logging response among compound channel in the different stages of long-term base level cycle is distributed irregularly.
- base level cycle /
- logging response /
- Gudao oilfield /
- channel /
- sediments /
- reservoir physical property

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图 1 孤岛油田构造位置

Fig. 1. Tectonic location of the Gudao oilfield

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图 2 基准面旋回综合模式(13XJ9井)

Fig. 2. Synthetic pattern of base level cycle(Well 13XJ9)

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图 3 SSC5短期基准面旋回储层质量模式(13XJ9井)

Fig. 3. The reservoir quality pattern of SSC5 short-term base level cycles (Well 13XJ9)

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图 4 储层质量、测井响应与基准面旋回的关系

Fig. 4. The relationship among the reservoir quality, logging response and the base level cycles

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图 5 储层质量与基准面旋回的关系

Fig. 5. The relationship between the reservoir quality and the base level cycles

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表 1 高分辨率层序地层格架特征和识别手段

Table 1. High resolution sequence stratigraphic framework features and recognition method

级次		长期旋回	中期旋回	短期旋回
成因		盆地升降、湖平面变化等因素	气候、湖平面变化等因素	水动力条件变化等因素
旋回特征	岩心	砂泥比整体自下而上减小	砂、泥岩互层，砂岩粒度总体正韵律、局部粗细交替	砂岩粒度呈正韵律，泥质含量向上逐渐增加
旋回特征	测井	测井曲线都呈向上振荡减弱特征，总体为箱形和钟形	测井曲线都呈向上增强、局部回返特征，总体为钟形	测井曲线呈钟形
旋回界面	岩心	顶部为含螺化石层的泥岩标志层，底部为厚层、稳定泛滥平原标志层	顶、底界面都为较薄的泛滥平原泥岩标志层	顶底界面都为岩相、岩性的突变面
旋回界面	测井	顶部微电极、微电位曲线呈针状，底部微电极、微电位曲线基线分布	自然电位、自然伽马和感应电导率大幅回返，微电极、微电位幅度和幅度差剧减	自然电位、自然伽马和感应电导率小幅回返，微电极、微电位幅度和幅度差较小

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表 2 高分辨率层序地层划分与岩石地层对比关系

Table 2. The comparison between the high resolution sequence stratigraphic division and the lithostratigraphy

地层系统	系组段	古近系
地层系统	系组段	馆陶上段
基准面旋回	长期	LSC1(Ng3砂层组)
	中期	MSC1(Ng 3₁~Ng3₃小层)		MSC2(Ng3₄小层)		MSC2(Ng3₅小层)
	短期	SSC1	SSC2	SSC3	SSC4	SSC5	SSC6
(单层)		Ng3₁~Ng3₂	Ng3₃	Ng3₄¹	Ng3₄²	Ng3₅¹	Ng3₅²

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表 3 不同相类型特征

Table 3. Different types of facies characteristics

相类型		河道(主体)	河道边缘		泛滥平原		废弃河道
相类型		河道(主体)	天然堤	决口扇	河漫滩地	河漫洼地	废弃河道
岩心特征	岩性	长石中细砂岩，夹薄层粉砂岩	薄层细砂岩、粉砂岩、粉砂质泥岩		灰色、灰绿色粉砂岩、粉砂质泥岩及杂色泥岩		粉细砂岩、泥质粉砂岩、泥岩
	构造	槽状、楔状交错层理，平行层理，砂岩底部见底冲刷	小型槽状交错层理、波状层理、爬升交错层理等，见虫孔及生物扰动构造		低角度斜层理、波状层理及水平波状层理，砂质条带		槽状、楔状交错层理及平行层理
	生物化石	仅见少量植物碎片	炭化植物碎片		淡水螺、植物碎屑		少
电测曲线		曲线呈箱形、齿化箱形、箱形叠加、齿化箱形叠加、钟形、箱形-钟形叠加	曲线呈钟形、指形或锯齿状等，幅度中低		曲线低幅平直，偶有微小低幅指形出现		钟形、齿化钟形、指形等，幅度中低

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