陆相致密砂砾岩气藏富集主控因素
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摘要
新场构造须四下亚段发育砂岩、砂砾岩和砾岩储层,储层纵横向非均质性极强,甜点平面分布不均。通过油气富集规律研究,建立了三种不同岩性天然气富集模式,并提出了油气富集的三个主控因素:古构造控制了油气富集带的形成、优质储层控制气藏展布、裂缝控制气井产量。寻找有利的相带、有利岩性组合是储层预测的关键,预测裂缝发育区是高效勘探开发的关键,该地质认识及基于此认识获得的预测成果在勘探开发实践中取得了较好的效果。
High-quality source rocks develop in upper Triassic Xujiahe Formation in xinchang gas filed.At the same time it has good sealing conditions and favorable source reservoir caprock association.Experience of exploration reveals that the area is overall gas-bearing,but the process of reservoir forming is very complicated.It is characterized by strong heterogeneity in vertical and horizontal direction.The sweet spots were uneven distribution.Study on oil and gas enrichment regularity,we established three different lithologic gas accumulation modes and proposed three main controlling factors:1)The paleostructure controlled formation of oil and gas enrichment zone.2)High quality reservoir controlled distribution of gas reservoir.3)The fracture controlled gas well production.The keys to reservoir prediction are finding favorable facies zones and beneficial lithology association.The key to efficient exploration and development is prediction of fracture development zone.The geological knowledge and the prediction results obtained good results in the practice of exploration and development.
High-quality source rocks develop in upper Triassic Xujiahe Formation in xinchang gas filed.At the same time it has good sealing conditions and favorable source reservoir caprock association.Experience of exploration reveals that the area is overall gas-bearing,but the process of reservoir forming is very complicated.It is characterized by strong heterogeneity in vertical and horizontal direction.The sweet spots were uneven distribution.Study on oil and gas enrichment regularity,we established three different lithologic gas accumulation modes and proposed three main controlling factors:1)The paleostructure controlled formation of oil and gas enrichment zone.2)High quality reservoir controlled distribution of gas reservoir.3)The fracture controlled gas well production.The keys to reservoir prediction are finding favorable facies zones and beneficial lithology association.The key to efficient exploration and development is prediction of fracture development zone.The geological knowledge and the prediction results obtained good results in the practice of exploration and development.
引文
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[17]汪洋,王桂成,王羽君,等.鄂尔多斯盆地郑庄油区延长组长6油层组储层特征[J].岩性油气藏,2010,22(3):48~52.
[18]钟金银,戴鸿鸣,王满,等.台北凹陷柯柯亚构造八道湾组储层成岩作用[J].岩性油气藏,2010,22(3):38~42.
[19]叶礼友,钟兵,熊伟,等.川中地区须家河组低渗透砂岩气藏储层综合评价方法[J].天然气工业,2012,32(11):43~46.
[20]宋红日,窦立荣,肖坤叶,等.Bongor盆地油气成藏地质条件及分布规律初探[J].石油与天然气地质,2009,30(6):762~767.
[21]苏传国,黄卫东,白喜俊,等.吐哈盆地天然气成藏地质条件与富集因素分析[J].天然气地球科学,2009,20(1):50~56.
[22]李绪深,裴健翔,李彦丽.莺歌海盆地乐东气田天然气成藏条件及富集模式[J].天然气工业,2013,33(11):16~21.
[23]刘晓丽.临清坳陷东部煤成气藏的主控因素及成藏模式[J].煤田地质与勘探,2013,41(1):25~29.
[2]章顺利,宋修章,吕正祥,等.川西新场构造须四段储层特征及主控因素[J].沉积与特提斯地,2012,36(1):98~103.
[3]蒋裕强,张春,张本健,等.复杂砂砾岩储集体岩相特征及识别技术—以川西北地区为例[J].天然气工业,2013,33(4):31~36.
[4]张富贵,刘家铎,孟万斌,等.川中地区须家河组储层成岩作用与孔隙演化研究[J].岩性油气藏,2010,22(1):30~36.
[5]谢刚平,叶素娟,田苗.川西坳陷致密砂岩气藏勘探开发实践新认识[J].天然气工业,2014,34(1):6~15.
[6]杨克明,朱宏权,叶军,等.川西致密砂岩气藏地质特征[M].北京:科学出版社,2012.
[7]葛祥.新场气田须四段砂砾岩储层测井解释[J].西部探矿工程,2015,35(4):37~41.
[8]刘四兵,沈忠民,吕正祥,等.四川新场地区须四段相对优质储层特征及孔隙演化[J].成都理工大学学报,2014,41(4):428~433.
[9]杨克明,朱宏权.川西叠覆型致密砂岩气区地质特征[J].石油实验地质,2013,35(1):1~8.
[10]盘昌林,刘树根.川东北地区须家河组天然气成藏主控因素分析[J].断块油气田,2011,18(4):418~423.
[11]裴森奇,李跃纲,张本健,等.川西地区上三叠统天然气成藏主控因素及勘探方向[J].天然气工业,2012,32(10):6~9.
[12]袁海锋,倪根生,邓小江.龙女寺构造须家河组天然气成藏主控因素[J].西南石油大学学报,2012,34(1):6~12.
[13]唐立章,张贵生,张晓鹏,等.川西须家河组致密砂岩成藏主控因素[J].天然气工业,2004,24(9):5~7.
[14]孙玮,刘树根,韩克猷,等.四川盆地燕山期古构造发展及对油气的影响[J].成都理工大学学报,2012,39(1):70~75.
[15]李洪玺,程绪彬,刘合年,等.麦捷让气田古构造对油气成藏的控制作用[J].西南石油大学学报,2010,32(4):44~49.
[16]冯文立,黄思静,黄培培,等.鄂尔多斯盆地东北部太原组砂岩储层特征[J].岩性油气藏,2009,21(1):89~93.
[17]汪洋,王桂成,王羽君,等.鄂尔多斯盆地郑庄油区延长组长6油层组储层特征[J].岩性油气藏,2010,22(3):48~52.
[18]钟金银,戴鸿鸣,王满,等.台北凹陷柯柯亚构造八道湾组储层成岩作用[J].岩性油气藏,2010,22(3):38~42.
[19]叶礼友,钟兵,熊伟,等.川中地区须家河组低渗透砂岩气藏储层综合评价方法[J].天然气工业,2012,32(11):43~46.
[20]宋红日,窦立荣,肖坤叶,等.Bongor盆地油气成藏地质条件及分布规律初探[J].石油与天然气地质,2009,30(6):762~767.
[21]苏传国,黄卫东,白喜俊,等.吐哈盆地天然气成藏地质条件与富集因素分析[J].天然气地球科学,2009,20(1):50~56.
[22]李绪深,裴健翔,李彦丽.莺歌海盆地乐东气田天然气成藏条件及富集模式[J].天然气工业,2013,33(11):16~21.
[23]刘晓丽.临清坳陷东部煤成气藏的主控因素及成藏模式[J].煤田地质与勘探,2013,41(1):25~29.