地震技术在车排子地区岩性油藏勘探中的应用
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摘要
针对车排子地区岩性油藏砂体厚度较薄,横向变化快、规模小的难题,探讨了岩性油藏预测的研究思路和配套技术。以地震、地质资料为基础,通过对储层岩石物理特征的分析,利用模型正演分析技术,验证了油砂体的"类亮点"地震反射特征。在单井相分析的基础上,利用地层切片技术划分有利相带,地震属性分析技术和分频检测技术清晰地勾画出砂体边界,结合振幅-厚度半定量来识别油砂体,在此基础上提出了针对性的储层预测方法,应用取得了较好的效果。
The sand bodies of lithologic reservoir are thin,small,and changing laterally quickly in Chepaizi region.Aiming at theses problems,this paper discussed the methods suitable for lithologic reservoir prediction.Based on seismic and geological data,by means of rock physical analysis and forward modeling,we proved that oil sand bodies have a seismic reflection character similar to bright spot.On the base of single well facies analysis,oil sand bodies were identified semi-quantitatively by using seismic sedimentology,and the boundaries of sand bodies were delineated using seismic attribute analysis and frequency decomposition technique.The proposed method has yielded satisfactory results.
The sand bodies of lithologic reservoir are thin,small,and changing laterally quickly in Chepaizi region.Aiming at theses problems,this paper discussed the methods suitable for lithologic reservoir prediction.Based on seismic and geological data,by means of rock physical analysis and forward modeling,we proved that oil sand bodies have a seismic reflection character similar to bright spot.On the base of single well facies analysis,oil sand bodies were identified semi-quantitatively by using seismic sedimentology,and the boundaries of sand bodies were delineated using seismic attribute analysis and frequency decomposition technique.The proposed method has yielded satisfactory results.
引文
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2陈轩,张尚锋,张昌民,等.准噶尔盆地车排子地区新近系沙湾组层序地层[J].新疆石油地质,2008,29(1):65～67
3张春雷,王新民,郭彦如,等.鄂尔多斯盆地姬塬地区延长组地质模型地震正演研究[J].石油天然气学报,2008,30(6):258～261
4朱允辉,王离迟,张福顺.准噶尔盆地腹部Y1井区隐蔽圈闭识别研究[J].勘探地球物理进展,2006,29(6):424～427
5Roy White,吴龙丽,陈先红.连井、流体替换和AVO模拟:一个北海的实例[J].石油物探译丛,1999(4):62～76
6魏嘉,岳承琪,刘永宁,等.油藏综合解释软件系统的研发及应用[J].石油物探,2005,44(5):479～485
7宋传春.准噶尔盆地排2井油层“亮点”地震响应及其识别[J].中国石油勘探,2007,12(4):49～53
8董辰强,王军.准噶尔盆地车排子地区新近系沙湾组一砂组油层地震特征分析[J].石油地球物理勘探,2007,42(4):445～447
9张延章,尹寿鹏,张巧玲,等.地震分频技术的地质内涵及其效果分析[J].石油勘探与开发,2006,33(1):64～71
10薛诗桂.几种参数在储层横向预测中的应用探讨[J].勘探地球物理进展,2004,27(6):428～431
11朱庆荣,张越迁,于兴河,等.分频解释技术在表征储层中的运用[J].矿物岩石,2003,23(3):104～108
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