底水油藏特高含水期剩余油分布表征技术研究  

Characterization of remaining oil distribution in heavy oil reservoir with bottom water at ultra-high water cut stage

作　　者：罗宪波 侯亚伟 孟鹏 LUO Xianbo;HOU Yawei;MENG Peng(Bohai Oilfield Research Institute of Tianjin Company of CNOOC,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司渤海石油研究院,天津300459

出　　处：《石油化工应用》2020年第11期33-37,共5页Petrochemical Industry Application

基　　金：国家科技重大专项“渤海油田加密调整油藏工程技术研究”,项目编号:2016ZX05025-001-007。

摘　　要：XF油田位于渤海海域的西部,含油层系为明化镇组和馆陶组,油藏类型主要为巨厚砂岩块状底水油藏,油藏幅度较低,油田开发主要采用“少井高产”单砂体水平井布井、天然边底水驱的开发策略,是渤海海域底水油藏开发的典型代表。目前油田综合含水达93.9%,动用储量采出程度为14%,开发进入“双高”阶段,针对特高含水阶段含水上升速度快、水平井实施难度大、剩余油分布复杂等问题,通过组织地球物理、地质工程、油藏工程等多学科专业联合技术攻关,在多年开发实践的基础上,建立了一套河流相强边底水油藏水平井开发模式,在底水油藏开发策略、底水油藏剩余油描述、低油柱油藏水平井高效实施、水平井稳油控水等方面形成了一系列配套技术体系,指导了此类油田的高效开发,取得了一系列技术创新,对类似油田具有重要的借鉴意义。XF oilfield is located in the west of Bohai Sea,with Minghuazhen and Guantao formation as the major oil-bearing zones.The reservoir type mainly consist of bottom water massive reservoir and edge water reservoir with low amplitude structure,and mainly adopt horizontal well spacing using edge and bottom water drive in a single sandstone for fewer wells with high production,which is a typical representative of bottom water reservoir development in the Bohai Sea.At the present,the oilfield is in the"double high"stage after several years development,with the water cut up to 93.9%and the recovery factor over 14%.Aimed at problems of the stage with high water cut,such as high ascending velocity of water cut,great difficulty of horizontal well implementation,complexity of remaining oil distribution and so on,the study and efforts had been made by organizing multi-disciplinary such as physical geography,geological engineering and reservoir engineering to make technological breakthrough.On the basis of years of development practices,the development pattern about oil highly recovering using horizontal well was established in the strong bottom water reservoir of fluvial sandstone pattern.A series of matching systems about horizontal wells development technology were formed on development strategy and oil remaining description for bottom water reservoir,the efficient implementation of horizontal well in the low-amplitude reservoir,and water control and oil increment policy.These technologies provide guidance to develop similar oilfields highly and efficiently through technology innovation,and have important guidance meaning and practical value to the development of these similar oilfields.

关 键 词：砂岩底水油藏 稠油 水平井 产液结构 控水增油 

分 类 号：TE327[石油与天然气工程—油气田开发工程]