低频可控震源在苏丹复杂探区中的应用
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摘要
苏丹某三维复杂探区位于中非裂谷带-苏丹裂谷盆地,地表为干燥松散巨厚的风化层,深层火成岩巨厚、不稳定、断层比较发育,断块破碎严重。常规地震勘探的深层资料品质很低并缺失高频和低频信息,导致该探区断层和构造解释存在多解性,影响了该区勘探潜力的评价及下一步井位的部署。采用低频可控震源激发减少了地表及地下火成岩对能量的屏蔽,增加了下传能量,提高了深层成像效果。该探区首次采用东方地球物理公司自主研制的BV-620LF低频可控震源在苏丹非洲草原和灌木丛地区进行应用,通过采用一系列的技术措施和合理的生产组织方式,解决了采集设备丢失严重的问题。同时,实现高效采集,又获得较好的资料,提高了深层成像效果。说明BV-620LF可控震源具有在该类地区作业的能力,值得在类似地区推广应用。
A 3 D complex exploration area in Sudan is located in the Central African Rift Valley-Sudan Rift Basin. The surface of the area is a dry, loose and extremely thick weathered layer. Deep igneous rocks are extremely thick and unstable. Faults are relatively developed and the fault blocks are severely fractured. The quality of deep data in conventional seismic exploration is very low and the high frequency and low frequency information are missing, which leads to the multi-solution of fault and structural interpretation in the exploration area, which affects the evaluation of exploration potential and the deployment of the next well position. The use of low-frequency vibroseis excitation reduces the shielding of energy from surface and underground igneous rocks, increases the downstream energy, and improves the deep imaging effect.TheBV-620 LF low-frequency vibroseis independently developed by BGP has been applied to the grassland and bush areas in Africa of Sudan for the first time. By adopting a series of technical measures and reasonable production organization, the problem of serious loss of acquisition equipment has been solved. At the same time, efficient acquisition is realized, better data are obtained, and the deep imaging effect is improved. This shows that BV-620 LF vibroseis has the ability to operate in such areas and is worthy of popularization and application in similar areas.
A 3 D complex exploration area in Sudan is located in the Central African Rift Valley-Sudan Rift Basin. The surface of the area is a dry, loose and extremely thick weathered layer. Deep igneous rocks are extremely thick and unstable. Faults are relatively developed and the fault blocks are severely fractured. The quality of deep data in conventional seismic exploration is very low and the high frequency and low frequency information are missing, which leads to the multi-solution of fault and structural interpretation in the exploration area, which affects the evaluation of exploration potential and the deployment of the next well position. The use of low-frequency vibroseis excitation reduces the shielding of energy from surface and underground igneous rocks, increases the downstream energy, and improves the deep imaging effect.TheBV-620 LF low-frequency vibroseis independently developed by BGP has been applied to the grassland and bush areas in Africa of Sudan for the first time. By adopting a series of technical measures and reasonable production organization, the problem of serious loss of acquisition equipment has been solved. At the same time, efficient acquisition is realized, better data are obtained, and the deep imaging effect is improved. This shows that BV-620 LF vibroseis has the ability to operate in such areas and is worthy of popularization and application in similar areas.
引文
[1] 黄永平,温铁民,闫杰.可控震源“两宽一高”技术在准噶尔盆地东部沙漠区的应用[C].2013年中国石油学会中国地球物理学会.2013.
[2] 蒋立,王晓涛,谭佳等.沙漠区近地表和中深层整体Q模型的建立及应用[J].新疆石油天然气,2016,12(3):8-12.
[3] 郭勇,闫培胜,夏建军等.低频可控震源在准噶尔盆地某三维项目中的应用[J].物探装备,2015,25(6):411-415.
[4] 王伟,张孟芬,朱旭江.GSR无线节点仪器与数字化地震队系统的结合及生产应用[J].物探装备,2017(1).
[5] 郭勇,闫培胜,夏建军等.低频可控震源在准噶尔盆地某三维项目中的应用[J].物探装备,2015,25(6):411-415.
[6] 陶知非,徐小刚,骆飞,马磊,刘志刚.LFV3低频可控震源技术与应用效果[J].物探装备,2018,28(01):1-3+51.
[7] 倪宇东,王井富,马涛.可控震源地震采集技术的进展[J].石油地球物理勘探,2011,46(3):349-356.
[8] 韩春瑞,杨全斌.柴达木盆地可控震源高效采集技术应用[J].青海石油,2014(4):17-23.
[9] 史庆阳,王学刚,王建新等.鄂尔多斯盆地低频可控震源高密度地震采集技术及效果[C].中国石油学会2015年物探技术研讨会论文集.2015.
[10] 王大兴,王学刚,杜中东,王彦铎等.低频可控震源在鄂尔多斯盆地三维油藏地震勘探中的应用[C].//2017中国地球科学联合学术年会论文集(三十).中国地球科学联合学术年会,2017.
[11] 张丽艳,李昂,于常青.低频可控震源“两宽一高”地震勘探的应用[J].石油地球物理勘探,2017,52(06):1236-1245+1121.
[12] 陈鹏,于常青,韩建光,李录明,王琪.低频可控震源在哈拉湖冻土区二维地震勘探试验研究[J].地球物理学进展,2018,33(02):562-570.
[13] 王永生,胡杰,张静,王传武,朱波,吴永国.宽频勘探技术在柴北缘深层侏罗系勘探中的应用[J].岩性油气藏,2017,29(06):101-107.
[14] 张慕刚,骆飞,汪长辉,陶知非,刘进宝.“两宽一高”地震采集技术工业化应用的进展[J].天然气工业,2017,37(11):1-8.
[2] 蒋立,王晓涛,谭佳等.沙漠区近地表和中深层整体Q模型的建立及应用[J].新疆石油天然气,2016,12(3):8-12.
[3] 郭勇,闫培胜,夏建军等.低频可控震源在准噶尔盆地某三维项目中的应用[J].物探装备,2015,25(6):411-415.
[4] 王伟,张孟芬,朱旭江.GSR无线节点仪器与数字化地震队系统的结合及生产应用[J].物探装备,2017(1).
[5] 郭勇,闫培胜,夏建军等.低频可控震源在准噶尔盆地某三维项目中的应用[J].物探装备,2015,25(6):411-415.
[6] 陶知非,徐小刚,骆飞,马磊,刘志刚.LFV3低频可控震源技术与应用效果[J].物探装备,2018,28(01):1-3+51.
[7] 倪宇东,王井富,马涛.可控震源地震采集技术的进展[J].石油地球物理勘探,2011,46(3):349-356.
[8] 韩春瑞,杨全斌.柴达木盆地可控震源高效采集技术应用[J].青海石油,2014(4):17-23.
[9] 史庆阳,王学刚,王建新等.鄂尔多斯盆地低频可控震源高密度地震采集技术及效果[C].中国石油学会2015年物探技术研讨会论文集.2015.
[10] 王大兴,王学刚,杜中东,王彦铎等.低频可控震源在鄂尔多斯盆地三维油藏地震勘探中的应用[C].//2017中国地球科学联合学术年会论文集(三十).中国地球科学联合学术年会,2017.
[11] 张丽艳,李昂,于常青.低频可控震源“两宽一高”地震勘探的应用[J].石油地球物理勘探,2017,52(06):1236-1245+1121.
[12] 陈鹏,于常青,韩建光,李录明,王琪.低频可控震源在哈拉湖冻土区二维地震勘探试验研究[J].地球物理学进展,2018,33(02):562-570.
[13] 王永生,胡杰,张静,王传武,朱波,吴永国.宽频勘探技术在柴北缘深层侏罗系勘探中的应用[J].岩性油气藏,2017,29(06):101-107.
[14] 张慕刚,骆飞,汪长辉,陶知非,刘进宝.“两宽一高”地震采集技术工业化应用的进展[J].天然气工业,2017,37(11):1-8.
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