基于波形相控反演的致密砂岩储层模拟预测方法——以黄骅坳陷沧东凹陷南部古近系孔二段为例

doi:10.12108/yxyqc.20240508

岩性油气藏 ›› 2024, Vol. 36 ›› Issue (5): 77–86.doi: 10.12108/yxyqc.20240508

基于波形相控反演的致密砂岩储层模拟预测方法——以黄骅坳陷沧东凹陷南部古近系孔二段为例

周自强¹, 朱正平¹, 潘仁芳¹, 董於², 金吉能¹

1. 长江大学地球科学学院, 武汉 430100;
2. 中国石油长庆油田公司第12采油厂, 甘肃庆阳 745000

收稿日期:2023-06-19 修回日期:2023-07-17 出版日期:2024-09-01 发布日期:2024-09-04
第一作者:周自强(1999—)，男，长江大学在读硕士研究生，研究方向为地球物理储层表征。地址：（430100）湖北省武汉市蔡甸区蔡甸街大学路111号。Email：738534341@qq.com。
通信作者: 朱正平(1980—)，男，博士，副教授，主要从事油藏描述和数字油田方面的教学与研究工作。Email：501096@yangtzeu.edu.cn。
基金资助:
国家科技重大专项“致密储层地震属性解析预测技术研究”（编号：2016ZX05047-002-003）资助。

Simulation and prediction of tight sandstone reservoirs based on waveform facies-controlled inversion：A case study from the second member of Paleogene Kongdian Formation in southern Cangdong sag， Huanghua Depression

ZHOU Ziqiang¹, ZHU Zhengping¹, PAN Renfang¹, DONG Yu², JIN Jineng¹

1. School of Geosciences, Yangtze University, Wuhan 430100, China;
2. No. 12 Oil Production Plant, PetroChina Changqing Oilfield Company, Qingyang 74500, GanSu, China

Received:2023-06-19 Revised:2023-07-17 Online:2024-09-01 Published:2024-09-04

摘要/Abstract

摘要： 在岩石物理分析的基础上，利用波形相控反演与模拟相结合的方法，并结合拟声波阻抗重构技术及基于坐标旋转的储层参数指示构建技术，对黄骅坳陷沧东凹陷南部中高斜坡区古近系孔二段的致密砂岩储层进行预测。研究结果表明：①波阻抗曲线对于砂岩和泥岩的识别效果较差，而自然伽马能以83 API为界限值有效区分砂岩与泥岩，优选的自然电位曲线不仅能以-13 mV为界限值有效区分砂岩和泥岩，对于储层与非储层也具有一定的区分能力。②重构后的拟声波阻抗曲线提高了对砂岩和泥岩的识别能力，基于坐标旋转的储层指示曲线以-10为门槛值划分储层与非储层，且储层指示曲线可实现对致密砂岩储层的预测。③波形相控反演与模拟相结合的储层预测方法能够提高致密砂岩储层预测的精度，并可降低储层预测的多解性，储层预测符合率达83.3%。

关键词: 波形相控, 拟声波阻抗曲线, 波形指示反演, 储层预测, 孔二段, 古近系, 沧东凹陷, 黄骅坳陷

Abstract: On the basis of rock physics analysis，a method combining waveform facies-controlled inversion and simulation，combined with pseudo acoustic impedance reconstruction technology and reservoir parameter indication construction technology based on coordinate rotation，was used to predict the dense sandstone reservoirs of the second member of Paleogene Kongdian Formation in the middle and high slope area of southern Cangdong sag in Huanghua Depression. The results show that：（1）The impedance curve has a poor recognition effect on sandstone and mudstone，while natural gamma ray can be used to effectively distinguish sandstone from mudstone with a limit value of 83 API. The preferred natural potential curve can be used to effectively distinguish sandstone from mudstone with a limit value of -13 mV，and it has a certain ability to distinguish reservoirs from non reservoirs.（2）The reconstructed pseudo acoustic impedance curve improves the recognition ability of sandstone and mudstone. The reservoir indicator curve based on coordinate rotation divides reservoirs and non reservoirs with a threshold value of -10，and the reservoir indicator curve can predict tight sandstone reservoirs. （3） The reservoir prediction method combining waveform facies-controlled inversion and simulation can improve the accuracy of tight sandstone reservoir prediction and reduce the multiplicity of reservoir predictions， with a reservoir prediction accuracy rate of 83.3%.

Key words: waveform facies-controlled, pseudo acoustic impedance curve, waveform indication inversion, reservoir prediction, the second member of Kongdian Formation, Paleogene, Cangdong sag, Huanghua Depression

中图分类号:

TE121.1

周自强, 朱正平, 潘仁芳, 董於, 金吉能. 基于波形相控反演的致密砂岩储层模拟预测方法——以黄骅坳陷沧东凹陷南部古近系孔二段为例[J]. 岩性油气藏, 2024, 36(5): 77–86.

ZHOU Ziqiang, ZHU Zhengping, PAN Renfang, DONG Yu, JIN Jineng. Simulation and prediction of tight sandstone reservoirs based on waveform facies-controlled inversion：A case study from the second member of Paleogene Kongdian Formation in southern Cangdong sag， Huanghua Depression[J]. Lithologic Reservoirs, 2024, 36(5): 77–86.

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基于波形相控反演的致密砂岩储层模拟预测方法——以黄骅坳陷沧东凹陷南部古近系孔二段为例

Simulation and prediction of tight sandstone reservoirs based on waveform facies-controlled inversion：A case study from the second member of Paleogene Kongdian Formation in southern Cangdong sag， Huanghua Depression

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