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随钻跟踪分析精细地震解释技术在克拉美丽火山岩气田开发中的应用
引用本文:杜庆祥,沈晓丽,李道清,王彬.随钻跟踪分析精细地震解释技术在克拉美丽火山岩气田开发中的应用[J].石油地球物理勘探,2015,50(2):316-326.
作者姓名:杜庆祥  沈晓丽  李道清  王彬
作者单位:1. 中国地质大学(北京)能源学院, 北京 100083; 2. 山东科技大学地球科学与工程学院, 山东青岛 266590; 3. 中国石油新疆油田分公司勘探开发研究院, 新疆克拉玛依 834000
基金项目:本项研究受中国石油"新疆大庆"重大科技专项"新疆和吐哈油田油气持续上产勘探开发关键技术"子课题"特殊气藏开发技术研究与应用"(2012E-34-10)和山东科技大学人才引进科研启动基金课题(0104060510309)联合资助。
摘    要:克拉美丽火山岩气藏以深度大、幅度低的隐蔽圈闭为主,储层具有强非均质性,分布规律复杂。研究区内现有三维地震资料分辨率低,仅据此解释预测的气层深度、储层和夹层岩性及分布规律等与实钻资料存在较大差异,需进行井位跟踪分析,实时指导下一步钻探目标或修正钻井轨迹。基于地震褶积模型和实钻结果,通过总结不同火山岩体对应的地震相特征及储层特征,建立了开发井位跟踪研究系列方法。以DX区块4口典型开发井为例,综合应用火山岩体侵入模式、极性识别、波形放大与正演模拟、地震属性精细识别等技术,进行随钻跟踪分析,显著提高了储层钻遇率,最大程度地提高了开发效益。

关 键 词:地震解释  火山岩气藏  随钻跟踪  井-震差异  变井轨迹  克拉美丽  
收稿时间:2014-04-25

Seismic updating interpretation with development well information in volcanic reservoir in Kelameili Gasfield in Junggar Basin
Du Qingxiang,Shen Xiaoli,Li Daoqing,Wang Bin.Seismic updating interpretation with development well information in volcanic reservoir in Kelameili Gasfield in Junggar Basin[J].Oil Geophysical Prospecting,2015,50(2):316-326.
Authors:Du Qingxiang  Shen Xiaoli  Li Daoqing  Wang Bin
Affiliation:1. School of Energy and Resources, China University of Geosciences (Beijing), Beijing 100083, China; 2. College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China; 3. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
Abstract:As deep and low-relief subtle traps, volcanic reservoirs in the Kelameili Gasfield are characterized by complex distributions and strong heterogeneity. Due to limits of 3D seismic data resolution, there are always some differences between seismic and real drilling data on the depth of gas reservoir tops, lithology, reservoir distribution, and inter-layers. Therefore, seismic interpreters need to update their interpretation with drilling well data, and propose next drilling targets or modify in time drilling trajectory. Based on seismic convolution model and the latest drilling information, we propose in this paper a seismic updating interpretation approach with well information by summarizing different volcanic seismic facies and reservoir characteristics. For four wells in the Block Dixi, we have made seismic updating interpretation with development wells information using volcanic body invasion model, polarity identification, waveform amplification, forward modeling and seismic attribute. The proposed approach improves significantly the reservoir encountering rates, and maximizes the development benefits.
Keywords:seismic interpretation  volcanic gas reservoir  seismic updating interpretation with well information  differences between seismic data and drilling results  modification of drilling trajectory  Kelameili  
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