大民屯凹陷隐蔽油气藏资料处理技术研究
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摘要
辽河盆地大民屯凹陷的勘探目标已由构造油气藏转向隐蔽性较强的地层油气藏和岩性油气藏。根据大民屯凹陷资料特点,开展了隐蔽油气藏配套处理技术研究。针对凹陷中央部位研究了叠前零相位处理技术、时空变谱拓展技术及to道拟合技术,有效地提高了地震资料的纵向分辨率,沙三段和沙四段主频达到45-50 Hz,能够识别15-20 m的薄砂层。针对大民屯凹陷东、西陡坡带以及基底潜山开发研究的叠前时间偏移技术,提高了地震资料的横向分辨率,改善了潜山的成像精度。所研究的技术推广应用到大民屯荣胜堡-前进地区和静北地区990 km2范围的实际生产中,有效地提高了勘探基础资料的品质。应用新的处理成果,大民屯凹陷在低潜山勘探和沙三段岩性油气藏勘探两大领域取得了突破,部署了多口预探井。
The exploration targets in Damintun depression, Liaohe Basin have changed from structural reservoirs into more complicated subtle ones such as stratigraphic and lithological reservoirs. We developed a suite of techniques for the processing of seismic data from Damintun depression. For the center of the depression, the key techniques includes prestack zero-phrase processing technique, space-time variant spectrum spread technique, t0 trace fitting technique. The dominate frequencies for S3 and S4 strata on the resulted sections are up to 45 - 50 Hz, and thin sand layers with thickness of 15 - 20 meters can be recognized. For the east/west sides and bottom buried-hills, we use prestack time migration technique as the key to improve lateral resolution of seismic data and imaging precision of bottom buried-hills. The proposed techniques have also been applied to the processing of 3-D seismic data from Qianjin and Jingbei survey areas (covering an area of 990 km2) in the de pressioa Based on the new data, several wells have been deployed and breakthroughs have been made in the fields of lower burred-hills and S3 lithologic reservoirs.
The exploration targets in Damintun depression, Liaohe Basin have changed from structural reservoirs into more complicated subtle ones such as stratigraphic and lithological reservoirs. We developed a suite of techniques for the processing of seismic data from Damintun depression. For the center of the depression, the key techniques includes prestack zero-phrase processing technique, space-time variant spectrum spread technique, t0 trace fitting technique. The dominate frequencies for S3 and S4 strata on the resulted sections are up to 45 - 50 Hz, and thin sand layers with thickness of 15 - 20 meters can be recognized. For the east/west sides and bottom buried-hills, we use prestack time migration technique as the key to improve lateral resolution of seismic data and imaging precision of bottom buried-hills. The proposed techniques have also been applied to the processing of 3-D seismic data from Qianjin and Jingbei survey areas (covering an area of 990 km2) in the de pressioa Based on the new data, several wells have been deployed and breakthroughs have been made in the fields of lower burred-hills and S3 lithologic reservoirs.
引文
1王丹,郭彦民,汪国文等．大民屯凹陷沙四段岩性油气 藏勘探研究[A]．见:张方礼,张占文．辽河油田勘探开 发研究院优秀论文集[C],北京:石油工业出版社, 2004．49-56
2周锦明,熊翥．地震数据精细处理[M]．北京:石油工 业出版社,2003．12-13
3谢里夫R E,吉尔达特L P．勘探地震学[M]．初英 译．北京:石油工业出版社,1999．368-378,410-411
4李庆忠．走向精确勘探的道路[M]．北京:石油工业出 版社,1993．12-24
5 吕景英,蒋进勇．地震子波零相位化改造的应用[J]． 勘探地球物理进展,2003,26(2):121-122
6温书亮,王焕弟,苑益军等．时频域零炮检距地震道拟 合技术在高分辨率地震资料处理中的应用[J]．石油地 球物理,2003,38(5):512-515
7云美厚,丁伟,王新红．地震水平分辨力研究与应用 [J]．勘探地球物理进展,2005,28(2):102-107
8曹国滨,张旭,张加海．叠前成像方法联合应用与配套 处理技术分析[J]．勘探地球物理进展,2005,28(5): 305-308
9王棣,王华忠,马在田等．叠前时间偏移方法综述[J]勘 探地球物理进展,2004,27(5):313-320
10渥·伊尔马滋．地震数据处理[M]．黄绪德,袁明德译． 北京:石油工业出版社,1994．230-235
2周锦明,熊翥．地震数据精细处理[M]．北京:石油工 业出版社,2003．12-13
3谢里夫R E,吉尔达特L P．勘探地震学[M]．初英 译．北京:石油工业出版社,1999．368-378,410-411
4李庆忠．走向精确勘探的道路[M]．北京:石油工业出 版社,1993．12-24
5 吕景英,蒋进勇．地震子波零相位化改造的应用[J]． 勘探地球物理进展,2003,26(2):121-122
6温书亮,王焕弟,苑益军等．时频域零炮检距地震道拟 合技术在高分辨率地震资料处理中的应用[J]．石油地 球物理,2003,38(5):512-515
7云美厚,丁伟,王新红．地震水平分辨力研究与应用 [J]．勘探地球物理进展,2005,28(2):102-107
8曹国滨,张旭,张加海．叠前成像方法联合应用与配套 处理技术分析[J]．勘探地球物理进展,2005,28(5): 305-308
9王棣,王华忠,马在田等．叠前时间偏移方法综述[J]勘 探地球物理进展,2004,27(5):313-320
10渥·伊尔马滋．地震数据处理[M]．黄绪德,袁明德译． 北京:石油工业出版社,1994．230-235
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