顺北地区超深断控储集体地震识别与描述

doi:10.7657/XJPG20210217

摘要/Abstract

摘要：

顺北地区发育断控储集体,埋深大,储集空间复杂,储集体展布主要受深大型走滑断裂控制,准确刻画断控储集体空间位置、储集体体积和储集体连通性,已成为断溶体油气藏勘探开发的主要难点。依据顺北地区走滑断裂的地质发育模式、断控储集体类型及地震响应特征,通过模型正演及井震结合分析,建立了走滑断裂带及断控储集体地震识别模式,开展储集体敏感地震属性分析,形成了针对断控储集体外部轮廓、内部不同类型储集体的一系列储集体预测技术。在此基础上,应用结构张量属性、增强相干属性、瞬时能量属性、杂乱属性以及相控波阻抗反演技术,对断控储集体边界及内部储集体进行表征,最终形成了顺北地区超深断控储集体地震识别技术。

关键词: 顺北地区, 走滑断裂, 断溶体油气藏, 正演模拟, 地震识别模式, 地震属性

Abstract:

Fault-controlled reservoirs in Shunbei area are deep in buried depth and complex in reservoir space. And their distribution is mainly controlled by deep and large strike-slip faults. So it is difficult to accurately describe their spatial position, volume and connectivity during exploration and development of the fault-karst reservoirs. According to the geological model of the strike-slip faults, and the types and seismic response characteristics of the fault-controlled reservoirs, we first establish seismic recognition patterns through forward modeling and well logging-seismic analysis for analyzing the sensitive seismic attributes of the reservoirs, and develop a series of technologies for predicting the outlines and interiors of the fault-controlled reservoirs. Then we characterize the outlines and interiors of the fault-controlled reservoirs based on the structural tensor, enhanced coherence, instantaneous energy and clutter attributes and phase-controlled wave impedance inversion. Finally, we provide the technology using seismic data to identify the ultra-deep fault-controlled reservoirs in Shunbei area.

Key words: Shunbei area, strike-slip fault, fault-karst reservoir, forward modeling, seismic recognition pattern, seismic attribute

中图分类号:

TE112.221

刘军, 李伟, 龚伟, 黄超. 顺北地区超深断控储集体地震识别与描述[J]. 新疆石油地质, 2021, 42(2): 238-245.

LIU Jun, LI Wei, GONG Wei, HUANG Chao. Seismic Identification and Description of Ultra-Deep Fault-Controlled Reservoirs in Shunbei Area[J]. Xinjiang Petroleum Geology, 2021, 42(2): 238-245.

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