论文详情

塔河油田缝洞储集体油水识别的谐频特征分析技术应用研究

石油物探

2014年 53卷第No. 4期

阅读：79

Title

Application of HFC technique for hydrocarbon identification in fracture-cave reservoirs of Lower-Ordovician carbonate in Tahe

Oilfeild

单位

(1.北京大学,北京100871;2.中国石油化工股份有限公司西北油田分公司勘探开发研究院,新疆乌鲁木齐830011;3.北京软岛科技有

限公司,北京100083;4.中国地质大学(武汉),湖北武汉430074)

Organization

(1.Peking University,Beijing 100871,China;2.Exploration and Development Research Institute,Sinopec Northwest Oilfield Branch

Corporation,Urumqi 830011,China;3.Beijing Ruandao Technology Limited Company,Beijing 100083,China;4.China University of

Geosciences(Wuhan),Wuhan 430074,China)

摘要

针对塔河油田下奥陶统碳酸盐岩缝洞型储集体的油水识别难题,开展了以频谱特征差异为基础的瞬时谐频特征(Harmonic Frequence Characters,HFC)分析技术应用研究。充填流体溶洞、坍塌-充填洞穴模型的正演模拟数据和井旁地震道产层段的频谱分析表明,主频段振幅是区分充填流体洞穴与坍塌-充填洞穴的主要依据,30 Hz以上的高频段振幅的差异是区分油和水的主要标志,由此形成缝洞型储集体的油水识别模式。对塔河油田十区和托普台地区各200 km²三维地震资料开展HFC油水识别应用研究,将识别结果用43口盲井进行验证,其识别符合率达到81.4%。

Abstract

Aiming at the hydrocarbon identification problem existing in the fracture-cave reservoirs of Lower-Ordovician carbonate in Tahe Oilfield,we applied the instantaneous harmonic frequency characteristics(HFC) technique which is based on the difference of the frequency spectrum characteristics.Analysis on the forwarding data of the fluid-filled caves & collapse-filled caves models and the spectrum of wellside seismic traces in production interval indicates the amplitude of dominant frequency zone is the main cretiaria for discriminating fluid-filled caves from collapse-filled caves,and the difference of the amplitude of high-frequency zone (>30 Hz) is the main label for identifying oil and brine.The about criteria forms the hydrocarbon identification pattern of fracture-cave carbonate reservoirs. The HFC technique is applied to the 3D seismic data from two survey areas(Shiqu and Tuoputai with 200 km² separately) in Tahe Oilfield.The application result is verified by 43 blind wells (validation well) and the coincidence ratio reaches to 81.4%.

关键词：

塔河油田; 碳酸盐岩缝洞型储集体; 油水识别; 谐频特征(HFC)分析;

Keywords:

Tahe Oilfield; fracture-cave reservoir; hydrocarbon identification; harmonic frequency characteristics(HFC) technique;

基金项目

DOI

10.3969/j.issn.1000-1441.2014.04.015