高邮凹陷断层岩性油气藏勘探技术与实践

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1、学兔兔www.xuetutu.com中国石油勘探第18卷第4期CHINAPETROLEUMEXPLORATION2013年7月DOI：10．3969／j．issn．1672-7703．2013．04．005高邮凹陷断层一岩性油气藏勘探技术与实践水梁兵(中国石化江苏油田分公司地质科学研究院，江苏省扬州市225009)摘要：江苏油田高邮凹陷地震资料品质受构造破碎、野外地表复杂等因素影响，且目标砂体厚度往往小于地震垂向分辨率，从地震剖面上无法直接识别单砂体，利用现有地震资料提高储层预测精度难度很大。通过对高邮凹陷地质背景的分析和戴南组高分辨率层序地层学研究、沉积背景分析、

2、沉积砂体发育特征与控砂机制研究，综合运用地质、测井、钻井、地震资料，建立了一套断层一岩性油气藏勘探方法：按照定性到半定量一定量化储层预测思路，利用叠前地震反演、地震AVO正演及属性分析等特色技术判断砂体发育区，开展定量储层厚度预测，最终综合定性、定量研究成果提高储层预测精度，提供有利钻探目标。勘探实践的高成功率充分说明该方法在断层一岩性油气藏勘探中行之有效。关键词：地质背景分析；高分辨率层序地层学；断层一岩性油气藏；叠前地震反演；地震AVO正演；属性分析中图分类号：P631．4文献标识码：AFault-LithologicReservoirExplorationTe

3、chnologyandPracticeinGaoyouSagLiangBing(GeologicalScientifcResearchInstituteofSINOPECJiangsuOilfieldCompany,YdngZhouCit))．JiangsuProvince22500~Abstract：InGaoyousagofJiangsuOilfield，seismicdataqualityisinfluencedbystructuralfactors，suchasstructurecrushingandcomplexfieldsurfaceconditions

4、，andthethicknessoftargetsandbodiesisoftenlessthantheve~icalseismicresolution．Sosinglesandbodycannotbedirectlyidentifiedfromseismicsection，anditisverydificulttoimprovereservoirpredictionaccuracyusingexistingseismicdata．ThroughtheanalysisofgeologicalbackgroundinGaoyousagandthehighresolut

5、ionsequencestratigraphyresearch，theanalysisofsedimentarybackground，sedimentarysandbodydevelopmentandsandcontrolmechanismresearchofDainanFormation，theintegrateduseofgeological，welllogging，drillingandseismicdata，asetoffault—lithologicreservoirexplorationmethodisestablished：accordingtothe

6、qualitativeandsemi—quantitativeandquantitativereservoirprediction，useprestackseismicinversion，AVOforwardmodelingandseismicattributeanalysistechnologytodeterminesandbodydevelopmentarea，carryoutquantitativereservoirthicknessforecast，finallyintegratequalitativeandquantitativeresearchresul

7、tstoimprovereservoirpredictionaccuracy,andprovidefavorabledrillingtargets．Highsuccessrateprovesthatthemethodisefectiveinfault—lithologicreservoirexploration．Keywords：geologicalbackgroundanalysis，high—resolutionsequencestratigraphy,fault—lithologicreservoicprestackseismicinversion，AVO