英买2地区多属性约束叠前宽方位裂缝预测
Application of Multi-Attribute Constrained Prestack Wide-Azimuth Fracture Prediction in Yingmai-2 Area
曾勇坚 1高宏亮 2关宝珠 2艾明波 2蔡泉 2李飞 2王张恒2
作者信息
- 1. 中国石油大学(华东)地球科学与技术学院,山东 青岛 266580
- 2. 中国石油 塔里木油田分公司 勘探开发研究院,新疆 库尔勒 841000;中国石油天然气集团有限公司 超深层复杂油气藏勘探开发技术研发中心,新疆 库尔勒 841000;新疆维吾尔自治区超深层复杂油气藏勘探开发工程研究中心,新疆 库尔勒 841000
- 折叠
摘要
英买2地区位于塔里木盆地塔北隆起英买力低凸起南部的英买2号构造上,受构造运动和岩浆侵入的影响,发育大量定向排列的高角度裂缝,储集层主要为裂缝型储集层.由于英买2地区储集层埋藏深度大且非均质性强,采用相干、曲率、蚂蚁体等叠后裂缝预测技术预测该地区裂缝型储集层难度大.以英买2地区叠前宽方位偏移距矢量片(OVT)域道集为基础,开展以叠前去噪、各向异性时差校正等手段为主的井控叠前OVT域道集优化处理,获得高质量的叠前宽方位道集,并以能够表征缝洞型储集层的梯度结构张量、振幅曲率和剩余波阻抗为主的叠后多属性为约束开展叠前相控裂缝预测.能够有效预测超深层缝洞型碳酸盐岩储集层的裂缝,为塔里木盆地裂缝型储集层油气勘探开发提供借鉴.
Abstract
The Yingmai-2 area is situated on the Yingmai-2 structure in the southern part of the Yingmaili low bulge of the Tabei uplift,Tarim basin.Affected by tectonic movements and magmatic intrusion,a large number of directionally-aligned high-angle fractures were de-veloped on the structure.The reservoirs are mainly fractured.Due to the deep burial depth and strong heterogeneity of the reservoirs in the Yingmai-2 area,predicting these fractured reservoirs using post-stack fracture prediction techniques like coherence,curvature,and ant-tracking proves challenging.Based on the pre-stack wide-azimuth offset vector tile(OVT)domain gather data from the Yingmai-2 area,well-controlled optimization processing of pre-stack OVT domain gather was implemented by employing techniques such as pre-stack denoising and anisotropy time difference correction to yield high-quality pre-stack wide-azimuth gather data.Subsequently,pre-stack facies-con-trolled fracture prediction was conducted under the constraints of post-stack multiple attributes that can represent fractured-vuggy reser-voirs,including gradient structure tensor,amplitude curvature,and residual wave impedance.This methodology can effectively predict frac-tures in ultra-deep fractured-vuggy carbonate reservoirs,and offer valuable insights for the exploration and development of fractured reser-voirs in the Tarim basin.
关键词
塔里木盆地/英买2地区/裂缝预测/缝洞型储集层/多属性约束/宽方位地震/OVT域Key words
Tarim basin/Yingmai-2 area/fracture prediction/fractured-vuggy reservoir/multi-attribute constraint/wide-azimuth seismic/OVT domain引用本文复制引用
出版年
2024
NETL
NSTL
万方数据