克拉玛依油田红浅区火驱燃烧前缘的确定  

Monitoring and Description Methods of Fire Flooding Combustion Front in Hongqian Area,Karamay Oilfield

作　　者：高成国[1] 木合塔尔[1] 展宏洋 王勇[1] 杨凤祥[1] 袁士宝[2] GAO Chengguo;Muhetaer;ZHAN Hongyang;WANG Yong;YANG Fengxiang;YUAN Shibao(Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Karamay,Xinjiang 834000,China;School of Petroleum Engineering,Xi’an Shiyou University,Xi’an,Shaanxi 710065,China)

机构地区：[1]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000 [2]西安石油大学石油工程学院,西安710065

出　　处：《新疆石油地质》2020年第2期188-192,共5页Xinjiang Petroleum Geology

基　　金：国家科技重大专项(2016ZX05012-003,2016ZX05055-002-002);中国石油科技重大专项(2017E-0408)。

摘　　要：火驱燃烧前缘的位置是火驱研究中的关注点,是正确认识火驱波及状态的保证。克拉玛依油田红浅火驱试验区采用测温井法、电磁法和数值模拟法监测燃烧前缘的位置,仍不能完全满足油田现场对于燃烧前缘快速确定的要求。通过对干式火驱室内实验和现场试验研究,建立原油酸值与燃烧前缘推进距离之间的线性关系式,利用此关系式计算燃烧前缘位置;火驱现场相邻2口注气井压力同步变化,反映了燃烧腔相互连通,基于原油酸值和注气井压力变化特征,建立确定燃烧前缘的原油酸值—压力法。2016年底,上倾方向的燃烧前缘到达一线生产井,下倾方向燃烧前缘越过一线生产井,燃烧腔大部分连通。最后通过电磁法和测温井法对燃烧前缘描述结果进行了验证,认为利用原油酸值—压力法计算的燃烧前缘位置结论可靠,能够准确反映油藏燃烧前缘推进情况。The position of combustion front is the focus of fire flooding research,and it is also the guarantee of the correct understanding about fire flooding sweep status.In Hongqian fire flooding pilot test area of Xinjiang,thermometric well method,electromagnetic method and numerical simulation method are used to monitor the position of combustion front,but these methods can’t fully meet the requirement of fast and accurate determination of the combustion front in the oilfield.Based on the laboratory experiment and in situ test of dry fire flooding,a linear relationship between the acid value of crude oil and advancing distance of combustion front is established,and then the position of combustion front is calculated with the relationship.The synchronous change of the pressures in two adjacent gas injection wells in fire flooding field reflects an important characteristic of the interconnection of the two combustion chambers.Based on the variations of crude oil acid value and pressure,the crude oil acid value-pressure method for combustion front description is established.The combustion front positions at different times are described by using the acid value-pressure method according to the acid value and injection pressure obtained from the Hongqian fire flooding pilot test area in Xinjiang.By the end of 2016,the combustion front in the up dipping direction had reached the producers,that in the down dipping direction had gone beyond the producers,and most combustion chambers had been connected.Finally,the results of fire line description are verified by electromagnetic method and thermometric well method.It is concluded that the calculation of the combustion front position with the acid value-pressure method is reliable,which can accurately reflect the ad vancement of the combustion front.

关 键 词：准噶尔盆地 红浅火驱试验区 火烧油层 燃烧前缘 原油酸值 注入压力 

分 类 号：T345[一般工业技术]