厚层稠油油藏火驱射孔层段优化探讨  

Optimization of perforation interval for fire flood in thick heavy oil reservoirs

作　　者：张方礼[1] 

机构地区：[1]中油辽河油田公司,辽宁盘锦124010

出　　处：《特种油气藏》2013年第2期96-101,156,共6页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"渤海湾盆地辽河坳陷中深层稠油开发技术示范工程"(2011ZX05053)

摘　　要：火烧油层(火驱)技术已成为辽河油田稠油油藏蒸汽吞吐后主体接替技术之一,目前主要应用于厚层块状普通稠油油藏、薄互层状普通稠油油藏以及超稠油油藏。厚层油藏在火驱过程中火线超覆严重,影响了火驱开发效果。重点针对制约火驱开发效果的注采井射孔技术进行研究探讨,通过室内物理模拟研究认识了厚层火驱二次燃烧现象,通过现场测试及数值模拟认识了厚层油藏平面及纵向火驱动用状况,并应用数值模拟和油藏工程方法对厚层常规火驱、重力火驱注采井射孔层段进行了优化设计,提出了不同火驱方式注采井射孔优化方案。该研究可为厚层稠油油藏火驱开发提供一定的技术借鉴。In situ combustion(fire flood) has become one of the major substitute techniques for heavy oil recovery after cyclic steam stimulation in the Liaohe oilfield involving thick massive conventional heavy oil reservoir,thin interbedded conventional heavy oil reservoir and ultra heavy oil reservoir.Thick reservoirs exhibit severe fire front override in fire flooding process,thus affected the development result.This research focuses on perforation technique which may restrict fire flood response.The phenomenon of secondary combustion in fire flood for thick reservoirs has been understood through physical simulations;the areal and vertical producing degree of fire flood in thick reservoirs has been understood through field tests and numerical simulations;the perforation interval of injection and production wells in conventional and gravity fire floods for thick reservoirs has been optimized by employing numerical simulation and reservoir engineering methods;and an optimum perforation plan has been proposed for different fire flood schemes.This research offers certain technical reference to fire flood in thick heavy oil reservoirs.

关 键 词：火驱 火烧油层 平面火驱 重力火驱 二次燃烧 射孔方式 稠油油藏 

分 类 号：TE345[石油与天然气工程—油气田开发工程]