河间南地区精细构造解释与目标评价

发布时间：2018-04-18 20:47

本文选题：河间南区 + 构造解释　；参考：《长江大学》2015年硕士论文

【摘要】：本文以饶阳凹陷河间南地区为例,在三维地震资料精细构造解释的基础上,进行井一震结合构造解释和断层的研究工作,并结合钻井、油田发动态资料、地震反演的结果,最终对目标区进行圈闭评价与储层预测研究,圈定有利区块,提出钻探井位。饶阳凹陷位于冀中坳陷东部,东起献县凸起,西至高阳低凸起,南接深县凹陷,北接霸县凹陷,是冀中探区油气富集、勘探潜力大的富油凹陷。本文研究工区位于饶阳凹陷中部,北邻八里庄潜山油田、南接留北油田,西隔河间西洼槽接肃宁油田。东西宽8km,南北长12km,面积约100km2。该地区第三系共发现四套含油层系：Nm、Ng、Ed、Es2,其Ed为主要含油层系,Nm、Es：具备一定的滚动勘探潜力。首先,本文以勘探地震学、构造地质学理论为指导,运用自动追踪、多线联合、合成记录标定、水平切片、相干体以及速度场建立技术等一系列精细构造解释技术,在详细研究工区内测井、钻井、地震资料的基础上,对研究区内100km2三维地震资料进行全区地震解释,运用先进技术和方法落实构造、精确断层位置,完成各标志层精细构造图。其次,本文以储层地质学、地震沉积学为理论指导,重点结合地震属性分析技术,对研究区进行成藏规律研究,明确各油藏的供油断层、油气运移方式及剩余油分布规律。该工区由于受河间主断层的控制,西侧形成了河间主生油洼槽,大断层下降盘形成了河间东营组逆牵引背斜构造,大断层上升盘形成了河间潜山、马851潜山等多个构造和潜山。其特定的地质条件形成了多套含油层系,该区是一个具有多套含油层系的复式油气聚集带。最后,在构造、储层研究的基础上,根据其配置关系,结合油气富集特点,发现和落实圈闭24个,并对重点圈闭进行了描述和评价。通过论文的开展,最后认为：(1)河间断层控制了本区油气的分布,深浅层油藏围绕河间断层分布,馆陶、明化镇油层的分布与河间西断层有主要关系。有利目标及剩余油潜力应该围绕河间断层周围开展研究。河间地区是一个复式油气聚集带,存在基岩潜山油藏、沙二+三段砂岩油藏、东营组油藏、馆陶组油藏及明化镇含油层。远离河间断层的以东地区,由于缺乏生油层和油源断层,潜山及第三系圈闭均未成藏。(2)河间主断层断距较大,断层上下两盘的地层厚度和产状差别都较大,因此,河间主断层两侧的速度横向变化较大。在河间主断层下降盘,地层层序较全,地层的厚度横向变化不大,速度相对稳定。在河间主断层上升盘,由于缺失东营组地层和沙一段上部地层,同时由于地层厚度在横向上的变化也较大,从而导致速度在横向上的变化也较大。在进行速度研究时,在不同的区块采用不同的方法求取地层速度,分区块建立速度场。最后把得到的速度场进行合并,实践表明这种方法能很好的还原地下真实构造形态,准确找到构造高点。
[Abstract]:Based on the fine structural interpretation of 3D seismic data, this paper takes the South Hegan area of Raoyang Sag as an example to study the combination of well and earthquake structure interpretation and fault, combined with drilling, oil field dynamic data, and seismic inversion results.Finally, the trap evaluation and reservoir prediction of the target area are carried out, the favorable blocks are delineated, and the drilling well location is put forward.Raoyang sag is located in the eastern part of Jizhong depression, Xianxian uplift in the east, Gaoyang low uplift in the west, Shenxian depression in the south and Baxian sag in the north. It is an oil-rich depression with great exploration potential in the exploration area of Jizhong.The research area is located in the middle of Raoyang Sag, bordering Balizhuang buried Hill Oil Field in the north, Liubei Oilfield in the south, and Suning Oilfield in Xiwa trough in Xianhejian.East and west 8 km wide, north and south 12 km long, the area is about 100 km2 2.Four sets of oil-bearing strata, one of which were found in the Tertiary system in this area, were found to have the potential for rolling exploration. Their Ed is the main oil-bearing series.First of all, guided by the theory of exploration seismology and tectonic geology, a series of fine structural interpretation techniques, such as automatic tracing, multi-line association, synthetic record calibration, horizontal slice, coherent volume and velocity field establishment, are used in this paper.Based on the detailed study of the testing wells, drilling and seismic data in the working area, the seismic interpretation of 100km2 3D seismic data in the study area is carried out, the structure is implemented by advanced techniques and methods, the location of faults is accurate, and the fine structural maps of each marker layer are completed.Secondly, under the guidance of reservoir geology and seismic sedimentology, combined with seismic attribute analysis technology, this paper studies the reservoir formation law in the study area, and makes clear the oil supply fault, oil migration mode and remaining oil distribution law of each reservoir.Under the control of the main fault in Hejian, the main oil generating depression was formed on the west side, the descending plate of the big fault formed the reverse traction anticline structure of the Dongying formation in Hejian, and the rising face of the big fault formed several structures and buried hills, such as buried hill in Hejian and buried hill in Ma 851.Several sets of oil-bearing strata have been formed in the specific geological conditions, and this area is a complex oil-gas accumulation zone with multiple sets of oil-bearing strata.Finally, on the basis of research on structure and reservoir, according to its configuration relationship, combined with the characteristics of oil and gas enrichment, 24 traps are discovered and implemented, and the key traps are described and evaluated.Through the development of the paper, it is concluded that the distribution of oil and gas in this area is controlled by the fault between the river and the river, and the distribution of deep and shallow reservoir around the fault between the river, Guantao and Minghuazhen is mainly related to the fault in the west of Hegan.Favorable targets and residual oil potential should be studied around the interriver fault.Hejian area is a compound oil and gas accumulation zone with bedrock buried-hill reservoir, sandstone reservoir of the third member of Sha 2, Dongying formation, Guantao formation and oil bearing layer of Minghuazhen.Far from the east of the Hejian fault, because of the lack of oil source fault and oil source fault, the buried hill and the third system trap have not formed reservoir. 2) the fault interval of the main fault in Hejian is larger, and the formation thickness and occurrence of the upper and lower sides of the fault are different greatly, therefore, the formation thickness and occurrence of the upper and lower sides of the fault are quite different.The lateral variation of velocity on both sides of the main fault in Hejian is great.In the downplane of the main fault in Hejian, the stratigraphic sequence is relatively complete, the thickness of the stratum is not changed transversely, and the velocity is relatively stable.Due to the absence of the Dongying formation and the upper part of the Shayi formation in the main fault of Hejian, the lateral variation of the formation thickness is also large, which leads to the great variation of the velocity in the transverse direction.In the research of velocity, different methods are used to calculate formation velocity in different blocks, and velocity fields are established in different blocks.Finally, the velocity field is combined, and the practice shows that this method can restore the real structure and find the high point of the structure.
【学位授予单位】：长江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;P631.44

【参考文献】