Page 58 - 《应用声学》2020年第1期

第 39 卷 第 1 期 Vol. 39, No. 1
2020 年 1 月 Journal of Applied Acoustics January, 2020

⋄“全国储层声学与深部钻测技术前沿研讨会”举办十周年 ⋄

井外溶洞储层的偶极横波反射特征研究 ∗

杨 岩 1,2,3 张 波 4 李 超 1,3† 张晋言 4 许孝凯 4 陈 浩 1,2,3 王秀明 1,2,3

(1 中国科学院声学研究所 声场声信息国家重点实验室 北京 100190)
(2 中国科学院大学 北京 100049)
(3 北京市海洋深部钻探研究中心 北京 100190)
(4 中石化胜利石油工程有限公司测井公司 东营 257061)

摘要：溶洞型储层是油气田中比较典型的储层之一，其非均质性强，勘探开发难度较大，偶极横波远探测技术
是目前探测井外溶洞的有效方法。碳酸盐岩溶洞模型正演模拟对于现场的油气勘探和资料解释具有指导性作
用。该文建立了几种比较典型的溶洞模型，并通过有限差分方法对溶洞储层的偶极三维反射声场进行了研究，
发现在小源距范围内可以接收到来自溶洞后壁较强的反射波，随着源距的增大，该反射波逐渐减弱至消失；对
于缝洞结合体的反射波场，来自裂缝的反射波能量要强于来自溶洞的反射波，且来自裂缝的反射波会掩盖溶
洞前壁的反射波信息，这对后期的成像处理带来了困难。最后进一步研究了偶极远探测技术在溶洞方位识别
以及尺寸大小估算中的应用。
关键词：溶洞储层；有限差分；反射波场；方位识别
中图法分类号: O429 文献标识码: A 文章编号: 1000-310X(2020)01-0054-09
DOI: 10.11684/j.issn.1000-310X.2020.01.007
Study on dipole shear wave reflection characteristics of out-well

karst cave reservoir

YANG Yan 1,2,3 ZHANG Bo 4 LI Chao 1,3 ZHANG Jinyan 4 XU Xiaokai 4

CHEN Hao 1,2,3 WANG Xiuming 1,2,3

(1 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China)
(2 University of Chinese Academy of Sciences, Beijing 100049, China)
(3 Beijing Engineering Research Center of Sea Deep Drilling and Exploration, Beijing 100190, China)
(4 Well Logging Company of Shengli Petroleum Engineering Co. Ltd., SINOPEC, Dongying 257061, China)

Abstract: Karst cave reservoir is one of the typical reservoirs in oil and gas fields. It is strongly heterogeneous
and difficult to develop. Dipole shear wave remote detection technology is an effective method to detect
out-of-well karst caves. Forward modeling of carbonate karst cave model plays a guiding role in field oil and
gas exploration and data interpretation. In this paper, several typical karst cave models are established,
and the three-dimensional dipole reflected wave field of karst cave reservoir is studied by finite-difference
time-domain (FDTD). It is found that strong reflection wave from the back wall of karst cave can be received
within a small source distance. With the increase of source distance, the reflection wave gradually weakens to
disappear. The reflected wave energy from the crack is stronger than that from the cave, and the reflected
wave from the crack will cover up the reflection wave information from the front wall of the cave, which brings

2019-09-29 收稿; 2019-11-28 定稿
国家自然科学基金项目 (11574347, 11774373, 11734017, 91630309)
∗
作者简介: 杨岩 (1992– ), 男, 山东滨州人, 博士研究生, 研究方向: 反射声波测井。
通信作者 E-mail: chaoli@mail.ioa.ac.cn
†