子长油田肖家河区延长组沉积相特征研究
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摘要
通过野外剖面和井下岩心观察描述并结合测井资料,对子长油田肖家河区主力油层组长4+5和长6沉积相展布特征及演化规律进行了系统的研究,结果表明:该区沉积构造特征多样,主力油层组发育两套三角洲沉积亚相,其中长6_1～长4+5_1为三角洲平原亚相,长6_4～长6_2为三角洲前缘亚相,在此基础之上又识别出6种沉积微相,自下而上沉积微相平面显示出沉积环境在演化过程中既有继承性又存在差异性。分流河道和水下分流河道为砂体的有利控制相带,从而进一步影响着储层特征及油气富集规律。
Based on the observation of field and core as well as the logging data, the characteristics of sedimentary facies of main producing reservoir, Chang 4+5 and Chang 6, in the Xiaojiahe area of Zichang oilfield were systematically studied. The results show that the geological features in study area are diverse. Two sets of sedimentary subfacies are well recognized in this area, of which, the subfacies of Chang 6_1～Chang 4+5_1 are delta plain,the subfacies of Chang 6_4～Chang 6_2 are the delta front. Moreover, six kinds of sedimentary microfacies could be recognized. Form bottom to up, the sedimentary environment has both inheritance and difference in the evolution process. The distribution of sand body is controlled by the sedimentary facies and influences hydrocarbon accumulation rules.
Based on the observation of field and core as well as the logging data, the characteristics of sedimentary facies of main producing reservoir, Chang 4+5 and Chang 6, in the Xiaojiahe area of Zichang oilfield were systematically studied. The results show that the geological features in study area are diverse. Two sets of sedimentary subfacies are well recognized in this area, of which, the subfacies of Chang 6_1～Chang 4+5_1 are delta plain,the subfacies of Chang 6_4～Chang 6_2 are the delta front. Moreover, six kinds of sedimentary microfacies could be recognized. Form bottom to up, the sedimentary environment has both inheritance and difference in the evolution process. The distribution of sand body is controlled by the sedimentary facies and influences hydrocarbon accumulation rules.
引文
[1]武富礼,李文厚,李玉宏,席胜利.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报,2004,6(3):307-315.
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[4]郭京哲,张永强,彭叙凯,李娅.鄂尔多斯盆地铁边城地区长8沉积相研究[J].石油化工应用,2011,30(11):31-35.
[5]于波,周康,郭强,白奋飞.鄂尔多斯盆地吴定地区延长组下部油气成藏模式与主控因素[J].地质与勘探,2012,48(4):858-863.
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[12]郭德运,郭艳琴,李文厚,张惠,李克永.鄂尔多斯盆地白豹地区延长组中段沉积特征与沉积模式[J].石油实验地质,2010,32(3):252-257.
[13]吴崇筠,薛叔浩.中国含油气盆地沉积学[M].北京:石油工业出版社,1993:26-96.
[14]王力,崔攀峰,等.鄂尔多斯盆地西峰油田长8沉积相研究[J].西安石油大学学报(自然科学版),2003,18(6):26-29.
[15]王纹婷,郑荣才,王成玉,王海军,牛小兵,王昌勇.鄂尔多斯盆地姬塬地区长8油层组物源分析[J].岩性油气藏,2009,21(4):41-51.
[2]李文厚,庞军刚,曹红霞,肖丽,王若谷.鄂尔多斯盆地晚三叠世延长期沉积体系及岩相古地理演化[J].西北大学学报,2009,39(3):501-506.
[3]庞军刚.鄂尔多斯盆地子长史家畔地区延长组储层特征研究[D].西安:西北大学博士论文,2010:1-133.
[4]郭京哲,张永强,彭叙凯,李娅.鄂尔多斯盆地铁边城地区长8沉积相研究[J].石油化工应用,2011,30(11):31-35.
[5]于波,周康,郭强,白奋飞.鄂尔多斯盆地吴定地区延长组下部油气成藏模式与主控因素[J].地质与勘探,2012,48(4):858-863.
[6]郭艳琴,余芳,李洋,李百强,李文厚,袁珍,赵靖.鄂尔多斯盆地东部盒8致密砂岩沉积特征及沉积模式[J].地质通报,2015,34(10):1971-1980.
[7]张三,杨博,李廷艳,王慧玲,张振红,汪伶俐.鄂尔多斯盆地志靖安塞地区长9油层组沉积相及其沉积演化特征[J].地质通报,2015,34(10):1964-1970.
[8]郭艳琴,李文厚,郭彬程,张倩,陈强,王若谷,刘溪,马瑶,李智超,张梦婷,李百强.鄂尔多斯盆地沉积体系与古地理演化[J].古地理学报,2019,2(1):1-12.
[9]梅志超,林晋炎.湖泊三角洲的地层模式和骨架砂体的特征[J].沉积学报,1991,9(4):1-8.
[10]杨俊杰.鄂尔多斯盆地构造演化与油气分布规律[M].北京:石油工业出版社,2002.
[11]陈全红,李文厚,高永祥,郭艳琴,冯娟萍.鄂尔多斯盆地上三叠统延长组深湖沉积与油气聚集意义[J].中国科学(D辑),2007,37(增刊I):39-48.
[12]郭德运,郭艳琴,李文厚,张惠,李克永.鄂尔多斯盆地白豹地区延长组中段沉积特征与沉积模式[J].石油实验地质,2010,32(3):252-257.
[13]吴崇筠,薛叔浩.中国含油气盆地沉积学[M].北京:石油工业出版社,1993:26-96.
[14]王力,崔攀峰,等.鄂尔多斯盆地西峰油田长8沉积相研究[J].西安石油大学学报(自然科学版),2003,18(6):26-29.
[15]王纹婷,郑荣才,王成玉,王海军,牛小兵,王昌勇.鄂尔多斯盆地姬塬地区长8油层组物源分析[J].岩性油气藏,2009,21(4):41-51.