不整合遮挡油藏水平井地质设计技术研究——以高青油田高10块为例

不整合遮挡油藏地质特征不同于常规油藏，因此水平井地质设计方法也不同。本文针对不整合遮挡油藏的基本特征，提出了此类油藏水平井地质设计的方法。结合高青油田高10块水平井整体开发实例，对水平井开发不整合遮挡油藏进行了精细的地质研究。研究表明，水平井开发地层不整合遮挡油藏具有比直井开发更大的优势，可以明显地改善其开发效果，提高采收率。为此对该类型油藏水平井地质设计的相关技术进行了优化研究。从高10块的设计实施情况看，取得了较好的经济效益，可指导同类油藏新、老油田的开发。

GEOLOGICAL DESIGN TECHNOLOGIES STUDY OF HORIZONTAL WELLS IN UNCONFORMABLE SCREENED RESERVOIR,CASE EXAMPLE:GAO10 BLOCK OF GAOQING OILFIELD

The geological characterization of unconformable screened reservoir is different from that of ordinary reservoir,so the geological design technologies of horizontal well are different too.This paper presents the geological design methods of horizontal well in unconformable screened reservoirs according to the basic geological characterization.Combined with the example of integrated development of Gao10 block using horizontal well in GaoQing oilfield,detailed geological study of the unconformable screened reservoir is performed.The result indicates that horizontal wells have obvious advantages in the development of unconformable screened reservoirs than straight wells,with improved development effect and recovery factor.Therefore,related geological design technologies of similar reservoirs using horizontal wells are optimized.In the field practice of Gao10 block,substantial economic benefit is gained.Its experiences can provide guides for development of similar new or old reservoirs.