基于地质统计学的地震反演冲积扇相研究——以新疆C油藏为例

赵磊; 石亮亮; 柯岭; 贺婷婷; 张政; 许学良

基于地质统计学的地震反演冲积扇相研究——以新疆C油藏为例

赵磊^1,,
石亮亮²,
柯岭³,
贺婷婷¹,
张政⁴,
许学良⁵

1.
中国石油化工股份有限公司石油勘探开发研究院, 北京 100083
2.
中国石油长庆油田分公司第六采油厂, 陕西西安 710200
3.
中海油研究总院, 北京 100028
4.
中国冶金地质总局地球物理勘探院, 河北保定 071051
5.
中国石油集团测井有限公司青海事业部, 青海德令哈 736202

基金项目:

国家科技重大专项 2016ZX05033-003-002

详细信息

作者简介:
赵磊(1985-), 男, 博士, 主要从事沉积相及开发地质方向研究工作。E-mail:ray-zhao@163.com

中图分类号: P618.13;P631.4
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- 被引次数: 0
出版历程
- 收稿日期: 2017-03-03
- 刊出日期: 2017-10-01

STUDY OF ALLUVIAL FAN SEDIMENTARY FACIES BASED ON GEOSTATISTICAL SEISMIC INVERSION-TAKE THE C OILFIELD OF XINJIANG AS AN EXAMPLE

1.
Sinopec Exploration & Production Research Institute, Beijing 100083, China
2.
PetroChina Changqing Oilfield Company No.6 Oil Production Plant, Xi'an 710200, Shannxi, China
3.
Research Institute China National Offshore Oil CORP, Beijing 100028, China
4.
Geophysical Exploration Academy of China Metallurgical Geology Bureau, Baoding 071051, Hebei, China
5.
CNPC Logging QingHai BU while drilling(log) Projects, Delingha 736202, Qinghai, China

摘要

摘要: 新疆C油藏属于开发早期区块，井资料少、井距较大，采用地震反演等数据进行沉积相研究，可提高研究精度。采用约束稀疏脉冲反演和地质统计学反演两种方法进行地震反演研究，前者受到地震分辨率的限制，纵向上分辨率不能够满足研究需求；而后者可提高反演纵向上的分辨率。本文采用地质统计学反演的储层厚度分布图进行沉积相分析，得到沉积相平面展布图，并总结了沉积相模式，解决了勘探阶段沉积相难以描述等问题，并取得了较好的效果。
- 地质统计学 /
- 地震反演 /
- 冲积扇 /
- 沉积相
Abstract: The C oilfield of Xinjiang is in the early development period which has few well data and large well spacing. The study of sedimentary facies using seismic inversion data can improve the research accuracy. The two methods are used for seismic inversion studies, namely constrained sparse pulse inversion and geostatistical inversion. The former is limited by seismic resolution and the vertical resolution can't meet the research demand. The latter can improve the vertical resolution. The sedimentary facies distribution is obtained by the geostatistical inversion of the reservoir thickness distribution map and the sedimentary facies pattern is summarized. This method solves the problem in describing the sedimentary facies in the exploration stage and the better results are obtained.
- geostatistics /
- seismic inversion /
- alluvial fan /
- sedimentary facies

HTML全文

图 1 油藏区域地理位置图

Figure 1. Location map of the reservoir area

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图 2 油藏P₂x₃¹层顶面单斜构造平面展布图

Figure 2. Layout of monoclinic structure plane of the top surface of reservoir P₂x₃¹ layer

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图 3 che502井单井柱状图

Figure 3. Single well histogram of che 502 well

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图 4 新疆C油藏冲积扇－扇根相沉积模式图

(据文献[19]修改)

Figure 4. Sedimentary model of alluvial fan-fan root in Xinjiang C reservoir

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图 5 约束稀疏脉冲波阻抗反演技术流程图

Figure 5. Flow chart of constraint sparse pulse wave impedance inversion technique

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图 6 叠后波阻抗反演与地质统计学反演对比

Figure 6. Constrast profile of post-stack impedance inversion and geostatistical inversion

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图 7 地质统计学过井che67反演剖面

Figure 7. Inversion profile of che67 well using geostatistics

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图 8 P₂x₃¹层平均阻抗平面图和RMS振幅平面图对比

Figure 8. Constrast of P₂x₃¹ layer average impedance map and amplitude map

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图 9 P₂x₃¹储层时间域厚度分布图

Figure 9. P₂x₃¹ reservoir time-domain thickness distribution

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图 10 P₂x₃¹沉积相与储层厚度分布图

Figure 10. P₂x₃¹ sedimentary facies and reservoir thickness distribution

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图 11 P₂x₃²沉积相与储层厚度分布图

Figure 11. P₂x₃² sedimentary facies and reservoir thickness distribution

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图 12 P₂x₃³沉积相与储层厚度分布图

Figure 12. P₂x₃³ sedimentary facies and reservoir thickness distribution

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