摘要
针对马头营凸起馆陶组低幅度构造落实程度低、储层预测难度大和成藏规律认识不清的难题,通过等效Q补偿高分辨率处理技术,提高地震资料主频分辨率,目的层段地震资料主频由30 Hz升至40 Hz;采用层控网格层析速度建模,提高速度求取精度,准确落实低幅度构造圈闭;利用属性分析技术进行沉积相分析,精细刻画目的层段河道砂体展布,并结合原油生物标志化合物对比、油气输导体系、油藏主控因素分析,明确了马头营凸起馆陶组的控藏要素,精细刻画了各成藏要素之间的时空配置关系,重建了马头营凸起馆陶组的油藏模式。预测了有利的油气聚集区,通过勘探部署,取得了良好的钻探效果,并形成了一套针对浅层低幅度构造油藏的精细评价技术和方法。该研究可为冀东油区周边凸起及渤海湾盆地相似地质条件下低幅度构造油藏的勘探提供借鉴。
With consideration to difficulties related to poor understanding to low-amplitude structures of Guantao Formation in the Matouying Uplift, accurate prediction of reservoirs and uncertainties in patterns of reservoir forma- tion, equivalent Q compensation high-resolution processing techniques have been deployed to enhance resolution of master frequency of seismic data with the master frequency in seismic data of target formations increased from 30Hz to 40Hz; By using layer-controlled grid tomographic velocity modeling, accuracy in velocity determined can be en- hanced to identify low-amplitude structural traps more accurately; In addition, attribution analysis technologies were used for analyses of sedimentary facies to determine distribution of channel sand bodies in target formations more accurately. In addition, comparison of bio-markers in crude oil, hydrocarbon transmission system and major controlling factors for reservoirs have been analyzed to clarify reservoir-control elements in Guantao Formation of Matouying Uplift. In this way, time-space configuration among different reservoir-formation elements can be high- lighted to re-construct reservoir pattern of the Guantao Formation in the Matouying Uplift. In this way, favorable zones with accumulation of hydrocarbons can be identified. Through deployment of exploration operations, desirable performances have been achieved in exploration. At the same time, sophisticated fine assessment technologies and methods for low-amplitude structures in shallow formations have been developed. Relevant research results may pro- vide valuable references for exploration of low-amplitude structural oil reservoirs with similar geologic conditions in surround uplifts of Jidong Oilfield and these in the Bohai Bay Basin.
出处
《特种油气藏》
CAS
CSCD
北大核心
2017年第1期11-15,48,共6页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"南堡凹陷油气富集规律与增储领域"(2011ZX05006-06)
中国石油科技重大专项"南堡凹陷及外围第四次油气资源评价"(2014E-050211)
关键词
等效Q补偿
低幅度构造
河道砂体
油藏模式
馆陶组
马头营凸起
equivalent Q compensation
low-amplitude structure
channel sand body
reservoir pattern
Guantao Formation
Matouying Uplift
