广义物质平衡计算法在沙南凹陷BZ油田滚动勘探开发中的应用
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摘要
渤海湾盆地沙南凹陷BZ油田沙一段生屑云岩主力含油储层投产后,发现实际生产特征与初始地质认识吻合度差,部分区块可能具有增储上产的潜力。通过利用油田生产动态资料,主要包括压力、产量及PVT实验等数据,采用广义物质平衡计算法识别出A4井区滚动勘探潜力最大。在此基础上,精细刻画生屑云岩沉积期古地貌和古生态环境特征并结合生屑云岩发育规律,预测了A4井区生屑云岩储层新的空间展布范围。实际钻探结果证实了储层预测的准确性,新增探明储量近400万t,保障了BZ油田的可持续发展和投资效益。该套方案对国内海上相似地质条件油田的滚动勘探开发具有借鉴意义。
Since the major oil reservoir of the BZ Oilfield in the Shanan Sag,the bioclastic dolostone in the 1 st Member of the Shahejie Formation,was put into production,there has been large contradiction between the actual production and the initial geological estimation.In some of the well areas,there is large potential to increase oil reserve and production.Based on the data from oil production performance,such as the data of pressure,output and PVT experiment,using the method of general material balance calculation,we found that the A4 well block has the largest rolling exploration potential.Through detailed description of palaeogeomorphology and paleo-ecological environment of the bioclastic dolostone in combination of the distribution pattern of the bioclastic dolostone reservoir,a new reservoir space distribution pattern of the bioclastic dolostone of A4 well block was established.The prediction is proved by the actual drilling results,and a newly proved reserve of nearly 4 million tons is identified,which will certainly ensure the sustainable development and investment profit of the BZ Oilfield.The solution is expected to be an example to be referred in progressing exploration and development in both the domestic and offshore oilfields under similar geological conditions.
Since the major oil reservoir of the BZ Oilfield in the Shanan Sag,the bioclastic dolostone in the 1 st Member of the Shahejie Formation,was put into production,there has been large contradiction between the actual production and the initial geological estimation.In some of the well areas,there is large potential to increase oil reserve and production.Based on the data from oil production performance,such as the data of pressure,output and PVT experiment,using the method of general material balance calculation,we found that the A4 well block has the largest rolling exploration potential.Through detailed description of palaeogeomorphology and paleo-ecological environment of the bioclastic dolostone in combination of the distribution pattern of the bioclastic dolostone reservoir,a new reservoir space distribution pattern of the bioclastic dolostone of A4 well block was established.The prediction is proved by the actual drilling results,and a newly proved reserve of nearly 4 million tons is identified,which will certainly ensure the sustainable development and investment profit of the BZ Oilfield.The solution is expected to be an example to be referred in progressing exploration and development in both the domestic and offshore oilfields under similar geological conditions.
引文
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[12]杨勇强,邱隆伟,陈世悦.半咸水湖盆碳酸盐岩层序地层分析——以东营凹陷南坡中段沙四上亚段为例[J].地层学杂志,2011,3(35):288-294.
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[15]夏青松,田景春,倪新锋.湖相碳酸盐岩研究现状及意义[J].沉积与特提斯地质,2003,23(1):21-30.
[16]陈绍周,高兴辰,丘东洲.中国早第三纪海陆过渡相[J].石油与天然气地质,1982,3(4):342-350.
[17]周书欣,王建国.湖相碳酸盐岩的石油地质意义[J].石油实验地质,1993,15(4):361-368.
[18]曾德铭,赵敏,石新,等.黄骅坳陷古近系沙一段下部湖相碳酸盐岩储层特征及控制因素[J].新疆地质,2010,28(2):186-190.
[2]王洪宝,王书宝,李勇,等.东辛油田沙一段碳酸盐岩储集层研究[J].石油勘探与开发,2004,31(5):38-43.
[3]宋章强,赖维成,牛成民,等.渤海海域湖相碳酸盐岩地震—地质综合预测方法及应用[J].石油与天然气地质,2009,30(4):444-449.
[4]王文荣,高印军,冷继川,等.王徐庄油田生物灰岩储集层综合研究[J].石油勘探与开发,2002,29(5):47-49.
[5]姜超,邓爱居,田小川,等.歧口凹陷西南缘沙一段下部碳酸盐岩储层特征及控制因素[J].东北石油大学学报,2013,37(1):32-36.
[6]杨有星,金振奎,高白水.歧口凹陷缓坡区湖泊碳酸盐岩优质储层特征及成因[J].石油学报,2012,33(6):978-986.
[7]刘磊.准噶尔盆地车排子地区滚动勘探开发技术[J].石油勘探与开发,2009,36(5):569-574.
[8]于正军,韩宏伟,王福永.东营凹陷滚动勘探开发技术研究与应用[J].石油勘探与开发,2003,30(2):46-48.
[9]谷维成,莫小国,贾志滨.东濮凹陷滚动勘探开发效果及潜力分析[J].石油大学学报:自然科学版,2002,26(6):25-28.
[10]Walsh P M.A generalized approach to reservoir material balance calculations[J].Journal of Canadian Petroleum Technology,1995,34(1):55-63.
[11]生如岩,丁良成,张伟伟.广义物质平衡计算在凝析气藏开采动态预测中的应用[J].中国海上油气(地质),2002,16(2):132-136.
[12]杨勇强,邱隆伟,陈世悦.半咸水湖盆碳酸盐岩层序地层分析——以东营凹陷南坡中段沙四上亚段为例[J].地层学杂志,2011,3(35):288-294.
[13]杜韫华.渤海湾地区下第三系湖相碳酸盐岩及沉积模式[J].石油与天然气地质,1990,11(4):376-391.
[14]张娣,侯中健,王亚辉,等.板桥—北大港地区沙河街组沙一段湖相碳酸盐岩沉积特征[J].岩性油气藏,2008,20(4):92-97.
[15]夏青松,田景春,倪新锋.湖相碳酸盐岩研究现状及意义[J].沉积与特提斯地质,2003,23(1):21-30.
[16]陈绍周,高兴辰,丘东洲.中国早第三纪海陆过渡相[J].石油与天然气地质,1982,3(4):342-350.
[17]周书欣,王建国.湖相碳酸盐岩的石油地质意义[J].石油实验地质,1993,15(4):361-368.
[18]曾德铭,赵敏,石新,等.黄骅坳陷古近系沙一段下部湖相碳酸盐岩储层特征及控制因素[J].新疆地质,2010,28(2):186-190.