莺琼盆地勘探钻井速度问题及解决方法
|
摘要
莺琼盆地具有巨大的天然气资源,除现有的几个已投产大气田外,其勘探程度还比较低。由于莺琼盆地探井较少,很难了解速度纵横向变化趋势,同时在实际工作过程中遇到速度标定存在大的误差问题,这对于钻井部署工作造成困难。主要遇到两个难题:一是采用周边已钻井的时深关系,预测深度与实钻深度存在较大误差;二是莺歌海盆地东方底辟区DF1A井VSP标定速度与区域速度存在较大的偏差。笔者针对两大速度难点展开方法研究,提出了具有针对性的方法思路,提高了探区速度预测的准确性。
The Yingqiong basin possesses abundant natural gas resources;nevertheless,except for a few large gas fields which have already been put into production,the exploration extent there is rather low.As the drill holes are insufficient in this basin it’s very difficult to understand the longitudinal and horizontal variation trends of the velocity.Besides,the work of velocity calibration often encounters remarkable errors,which causes difficulty in drill hole employment.There exist mainly two difficult problems: one is the existence of considerable error between the predicted depth and the drilling depth when the time-depth relationship of the surrounding drilled well is adopted;the other is the existence of rather large deviation between the VSP calibration velocity of DFIPO well in Dongfang diapiric area of the Yingqiong basin and the regional velocity.Aimed at solving these two difficult problems,the authors conducted methodological study and put forward effective train of thought and means,thus improving the accuracy of velocity prediction in the study area.
The Yingqiong basin possesses abundant natural gas resources;nevertheless,except for a few large gas fields which have already been put into production,the exploration extent there is rather low.As the drill holes are insufficient in this basin it’s very difficult to understand the longitudinal and horizontal variation trends of the velocity.Besides,the work of velocity calibration often encounters remarkable errors,which causes difficulty in drill hole employment.There exist mainly two difficult problems: one is the existence of considerable error between the predicted depth and the drilling depth when the time-depth relationship of the surrounding drilled well is adopted;the other is the existence of rather large deviation between the VSP calibration velocity of DFIPO well in Dongfang diapiric area of the Yingqiong basin and the regional velocity.Aimed at solving these two difficult problems,the authors conducted methodological study and put forward effective train of thought and means,thus improving the accuracy of velocity prediction in the study area.
引文
[1]陈希仁.莺歌海盆地莺东构造带勘探前景分析[J].天然气工业,1991,19(1):31-34
[2]何家雄,冼仲猷,杨希冰,等.莺歌海盆地莺东斜坡带油气地质条件及近期勘探领域探讨[J].中国海上油气:地质,2001,15(4):242-248
[3]何家雄,夏斌,张树林,等.莺歌海盆地异常高温高压环境下天然气运聚成藏规律[J].海洋地质与第四纪地质,2006,26(4):81-89
[4]李列,宋海斌,杨计海.莺歌海盆地中央坳陷带海底天然气渗漏系统初探[J].地球物理学进展,2006,21(4):1244-1247
[5]陈瑜,魏赟,葛勇.东海盆地L凹陷多次波分析与压制[J].中国海上油气:地质,2004,16(6):373-376
[6]郝芳,董伟良,邹华耀,等.莺歌海盆地汇聚型超压流体流动及天然气晚期快速成藏[J].石油学报,2003,24(6):7-12
[7]蔡刚,屈志毅.构造复杂地区地震资料速度和成图方法研究与应用[J].天然气地球科学,2005,16(2):246-249
[8]刘爱群,童传新,李林.莺东斜坡带速度分析方法研究及速度影响因素分析[J].地球物理学进展,2008,23(6):1909-1917
[9]刘爱群,李强,陈殿远,等.天然气勘探速度预测过程中存在的问题及方法探讨[J].地球物理学进展,2011,26(4):1312-1319.
[10]刘江平,杨永清,李修忠.复杂地形条件下地震速度提取方法及分析[J].物探与化探,1999,23(4):259-264
[11]刘启凤.地震资料成像和构造成图中速度的分析与应用[J].江汉石油大学学报,2003,17(4):52-54
[12]刘天佑,黎益仕,师学明.地层压力预测方法及其在莺歌海盆地的应用[J].中国海上油气:地质,1995,9(5):333-339
[13]何家雄,李明兴,黄保家.莺歌海盆地北部斜坡带油气苗分布与油气勘探前景剖析[J].天然气地球科学,2000,11(2):1-9
[14]孟庆生,楚贤峰,郭秀军,等.高分辨率数据处理技术在近海工程地震勘探中的应用[J].地球物理学进展,2007(3):1006-1010
[15]田世澄,陈永进,施凤成,等.异常压力封存箱在油气成藏中的作用[J].地学前缘,2004,11(3):283-284
[16]谢瑞杰,朱广生,漆家福,等.声波测井资料在速度场中的应用[J].西南石油学院学报,2003,25(1):9-12
[17]王立明,李庆春.选择相关法提高转换波速度分析精度[J].地球物理学进展,2006,21(4):1213-1220
[18]王德利,何樵登,韩立国.裂隙各向异性介质中的NMO速度[J].地球物理学进展,2007,22(6):1698-1705
[19]叶勇,孙开峰.密点速度分析技术在塔河油田西南部低幅构造中的应用[J].地球物理学进展,2008,23(1):124-128
[20]张发强,王震亮,吴亚生,等.消除影响压实趋势线地质因素的方法[J].沉积学报,2002,20(2):326-332
[21]张鸿烈,邓金华.用地震速度谱信息寻找地下油气藏的方法[J].石油地球物理勘探,1996,31(2):53-59
[22]张印堂.渤深6地区高精度处理技术[J].地球物理学进展,2005,20(1):49-53
[2]何家雄,冼仲猷,杨希冰,等.莺歌海盆地莺东斜坡带油气地质条件及近期勘探领域探讨[J].中国海上油气:地质,2001,15(4):242-248
[3]何家雄,夏斌,张树林,等.莺歌海盆地异常高温高压环境下天然气运聚成藏规律[J].海洋地质与第四纪地质,2006,26(4):81-89
[4]李列,宋海斌,杨计海.莺歌海盆地中央坳陷带海底天然气渗漏系统初探[J].地球物理学进展,2006,21(4):1244-1247
[5]陈瑜,魏赟,葛勇.东海盆地L凹陷多次波分析与压制[J].中国海上油气:地质,2004,16(6):373-376
[6]郝芳,董伟良,邹华耀,等.莺歌海盆地汇聚型超压流体流动及天然气晚期快速成藏[J].石油学报,2003,24(6):7-12
[7]蔡刚,屈志毅.构造复杂地区地震资料速度和成图方法研究与应用[J].天然气地球科学,2005,16(2):246-249
[8]刘爱群,童传新,李林.莺东斜坡带速度分析方法研究及速度影响因素分析[J].地球物理学进展,2008,23(6):1909-1917
[9]刘爱群,李强,陈殿远,等.天然气勘探速度预测过程中存在的问题及方法探讨[J].地球物理学进展,2011,26(4):1312-1319.
[10]刘江平,杨永清,李修忠.复杂地形条件下地震速度提取方法及分析[J].物探与化探,1999,23(4):259-264
[11]刘启凤.地震资料成像和构造成图中速度的分析与应用[J].江汉石油大学学报,2003,17(4):52-54
[12]刘天佑,黎益仕,师学明.地层压力预测方法及其在莺歌海盆地的应用[J].中国海上油气:地质,1995,9(5):333-339
[13]何家雄,李明兴,黄保家.莺歌海盆地北部斜坡带油气苗分布与油气勘探前景剖析[J].天然气地球科学,2000,11(2):1-9
[14]孟庆生,楚贤峰,郭秀军,等.高分辨率数据处理技术在近海工程地震勘探中的应用[J].地球物理学进展,2007(3):1006-1010
[15]田世澄,陈永进,施凤成,等.异常压力封存箱在油气成藏中的作用[J].地学前缘,2004,11(3):283-284
[16]谢瑞杰,朱广生,漆家福,等.声波测井资料在速度场中的应用[J].西南石油学院学报,2003,25(1):9-12
[17]王立明,李庆春.选择相关法提高转换波速度分析精度[J].地球物理学进展,2006,21(4):1213-1220
[18]王德利,何樵登,韩立国.裂隙各向异性介质中的NMO速度[J].地球物理学进展,2007,22(6):1698-1705
[19]叶勇,孙开峰.密点速度分析技术在塔河油田西南部低幅构造中的应用[J].地球物理学进展,2008,23(1):124-128
[20]张发强,王震亮,吴亚生,等.消除影响压实趋势线地质因素的方法[J].沉积学报,2002,20(2):326-332
[21]张鸿烈,邓金华.用地震速度谱信息寻找地下油气藏的方法[J].石油地球物理勘探,1996,31(2):53-59
[22]张印堂.渤深6地区高精度处理技术[J].地球物理学进展,2005,20(1):49-53
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心