塔河油田4区奥陶系洞穴系统连通性分析  

The Connectivity Analysis of The Ordovician Cavity System in Block 4,Tahe Oilfield

作　　者：于海波[1] 李国蓉[1] 童孝华[1] 

机构地区：[1]成都理工大学能源学院,四川成都610059

出　　处：《内蒙古石油化工》2007年第5期316-320,共5页Inner Mongolia Petrochemical Industry

摘　　要：古岩溶洞穴型碳酸盐岩储集层是塔河油田奥陶系油藏重要的储集层类型之一。本文以静态资料划分的三套洞穴系统为基础,利用动态资料来验证静态资料对洞穴系统的划分,综合分析了塔河4区9口井的压力及生产动态资料,通过单井原始地层压力、折算压力、干扰试井、压力降落特征、油藏压降特征、新井投产与相邻井变化特征等6种方法,研究了塔河4区东北部岩溶旋回Ⅰ、Ⅲ时期的洞穴系统中各井洞穴层之间的连通关系,初步研究证实了静态资料所划分的洞穴系统的连通性,探索了利用动态资料研究洞穴系统连通关系的思路及方法。Paleokarst cave-type reservoir is one of the most important reservoirs in Ordovician in Tahe Oil Field, Tarim basin. The main object of this thesis is to provide new evidences and validate the cavesystems which had been identified by static geological analysis previously, through integrated analysis of dynamic data. With the data of pressure and productive records of 10 wells in Block 4 of Tahe Oilfield, the connectivity of caves within those 10 wells in Block 4 for cave formation Ⅰ and Ⅲ individually had been studied, through the integrated analysis of 6 methods： initial strata pressure; reduced pressure; well interference test; pressure breakdown; pressure drop of oil reservoir; adjoining well changes when new well binging produced. The results show that studies from production data validated the connectivity of cavesystems from static data, and the thought and means of studying of the connectivity of caves by production data.

关 键 词：塔河油田 奥陶系 洞穴系统 连通性 动态资料 

分 类 号：P618.130.2[天文地球—矿床学]