“三相”联合解释技术在岩性油气藏勘探中的应用——以吐哈盆地胜北地区为例
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摘要
采用测井相、地震相、沉积相“三相”联合解释技术进行吐鲁番-哈密盆地胜北地区岩性油气藏纵向有利勘探层系和平面有利勘探位置优选,其中用测井相与岩芯观察结合确定主要勘探目的层井点处的沉积微相类型,用地震相分析确定目的层平面地震相变化特征,用单井等建立的纵向沉积微相组合模式和平面沉积微相变化规律来全面确定目的层沉积微相变化特征,直接指导岩性油气藏有利勘探层系和平面位置的选择。通过在胜北地区喀拉扎组的应用,确定了胜北构造带及其南翼喀拉扎组冲积扇扇中辫流河道为岩性油气藏有利勘探区带和层系,优选的目标胜北16井在实际勘探中取得了良好效果,评价出北部辫流河道东段和南部辫流河道为下一步的有利勘探地区。认为“三相”联合解释技术在地震资料品质较好、构造相对简单且具备一定勘探程度的地区具有良好实用性。
By the "three facies" integrated interpretation technique,which is the combination of log facies,seismic facies and sedimentary microfacies,the favorable sequences in vertical and the favorable regions in plane are determined to explore the lithologic reservoirs of the Shengbei region in the Turpan-harmy basin.Log facies combined with the core observation is to define the sedimentary microfacies type of the main exploration formation in the well points.Seismic facies analysis is to define the seismic facies variation of the main exploration formation in plane.Sedimentary microfacies is to define the microfacies variation as a whole according to the microfacies combination pattern established by single well etc.The "three facies" integrated interpretation result may be directly used to select the favorable sequences in vertical and the favorable region in plane to explore lithologic reservoirs.The method is applied in the Shengbei region of the Turpan-harmy basin.The middle fan braided channels of alluvial fans of the Kalazha Formation in the Shengbei structural belt and its south flank are determined as the favorable positions for exploration.The selected and employed target of Well Shengbei 16 gets a good exploration result.The application shows that this technique is an effective way for the lithologic reservoir exploration in regions with good quality of seismic data,simple structures and certain degree of exploration.
By the "three facies" integrated interpretation technique,which is the combination of log facies,seismic facies and sedimentary microfacies,the favorable sequences in vertical and the favorable regions in plane are determined to explore the lithologic reservoirs of the Shengbei region in the Turpan-harmy basin.Log facies combined with the core observation is to define the sedimentary microfacies type of the main exploration formation in the well points.Seismic facies analysis is to define the seismic facies variation of the main exploration formation in plane.Sedimentary microfacies is to define the microfacies variation as a whole according to the microfacies combination pattern established by single well etc.The "three facies" integrated interpretation result may be directly used to select the favorable sequences in vertical and the favorable region in plane to explore lithologic reservoirs.The method is applied in the Shengbei region of the Turpan-harmy basin.The middle fan braided channels of alluvial fans of the Kalazha Formation in the Shengbei structural belt and its south flank are determined as the favorable positions for exploration.The selected and employed target of Well Shengbei 16 gets a good exploration result.The application shows that this technique is an effective way for the lithologic reservoir exploration in regions with good quality of seismic data,simple structures and certain degree of exploration.
引文
[1]中国石油天然气股份有限公司勘探与生产分公司.岩性地层油气藏勘探理论与实践培训教材[M].北京:石油工业出版社,2005.
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[2]杨占龙,陈启林,魏立花,等.地震相分类技术及其在岩性油气藏勘探中的应用[J].天然气工业,2006,26(SA):51-53.
[3]杨占龙,郭精义,陈启林,等.地震信息多参数综合分析与岩性油气藏勘探——以JH盆地XN地区为例[J].天然气地球科学,2004,15(6):628-632.
[4]杨占龙,陈启林,郭精义,等.胜北洼陷胜北构造带白垩系连木沁组沉积体系分布与岩性油气藏勘探[J].天然气地球科学,2006,17(1):85-89.
[5]李红哲,杨占龙,吴青鹏,等.沉积相分析在岩性油气藏勘探中的应用——以吐哈盆地胜北洼陷中侏罗统—白垩系为例[J].天然气地球科学,2006,17(5):694-698.
[6]印兴耀,韩文功,李振春,等.地震技术新进展[M].北京:石油大学出版社,2006:90-95.
[7]王智勇.岩性油气藏勘探技术在铁匠炉—大湾斜坡带中的应用[J].特种油气藏,2006,13(3):41-44.
[8]鄢继华,陈世悦,程立华.扇三角洲亚相定量划分的思考[J].沉积学报,2004,22(3):443-448.
[9]董春梅,张宪国,林承焰.地震沉积学的概念、方法和技术[J].沉积学报,2006,24(5):698-703.
[10]李在光,杨占龙,李红哲,等.吐哈盆地胜北地区含油气性检测[J].天然气地球科学,2006,17(4):532-537.
[11]陈启林,杨占龙.岩性油气藏勘探方法与技术[J].天然气地球科学,2006,17(5):622-626.
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