CAJ | 학술논문

应用地震技术预测和识别扶杨油层河道砂体是当前松辽盆地北部的油气勘探中最为急需的技术之一.本文以GTZ地区为例,探讨了扶杨油层河道砂体的成因特点,指出地震的低分辨率,河道砂体的薄互层、横向变化快、储层非均质性强等地质特点,是当前应用地震技术识别扶杨油层河道砂体的困难所在.文中介绍了当前技术条件下河道识别的两种方法:利用频谱成像技术和叠前方位各向异性技术进行河道识别的方法和思路.以扶余油层为目的层说明了应用上述两种方法识别河道砂体的良好效果,并和已知井资料进行对比,符合率可达80%.
응용지진기술예측화식별부양유층하도사체시당전송료분지북부적유기감탐중최위급수적기술지일.본문이GTZ지구위례,탐토료부양유층하도사체적성인특점,지출지진적저분변솔,하도사체적박호층、횡향변화쾌、저층비균질성강등지질특점,시당전응용지진기술식별부양유층하도사체적곤난소재.문중개소료당전기술조건하하도식별적량충방법:이용빈보성상기술화첩전방위각향이성기술진행하도식별적방법화사로.이부여유층위목적층설명료응용상술량충방법식별하도사체적량호효과,병화이지정자료진행대비,부합솔가체80%.
The Fuyang oil-layer in North Songliao Basin is characterized by thin interbedded sands and shales, strong lateral variation, strong reservoir heterogeniety, and so on. The thickness of individual sand layers is generally 3 - 5 m. Identifying the channel sand-bodies of the Fuyang oil layer using seismic techniques is very difficult due to the low seismic resolution. Taking the GTZ area as an example, we discuss the genetic characteristics of the channel sand-bodies and point out the real difficulty in using seismic techniques to predict the channel sand-bodies. Two methods for the identification of channels are presented: frequency spectrum imaging and pre-stack azimuthal anisotropy. Identifying the channel sand-bodies in Fuyu oil-layer using the two seismic methods results in a success rate up to 80% compared with well data.