L油田低阻油层成因分析及挖潜研究  

Genetic analysis and potential research of low resistance oil reservoirs in Bohai L oilfield

作　　者：王海更 张博文 张俊 Wang Haigeng;Zhang Bowen;Zhang Jun(Tianjin Branch of CNOOC Ltd.,Tianjin 300452)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《石化技术》2024年第12期220-222,共3页Petrochemical Industry Technology

摘　　要：L油田L60油组发育一套低阻油层,是油田上产的重要潜力。运用宏观与微观结合的研究方法,对其宏观沉积环境和微观成因进行研究。结果表明:L60油组地层沉积时期为浅水辫状河三角洲前缘沉积相,水动力较弱,主控物源提供较丰富中酸性火山物质,古气候由温热气候转变为干冷气候,这些因素是低阻油层形成的宏观因素。微观上,较高束缚水含量和较高黏土矿物含量是低阻油层形成主控因素。结合低阻油层成因分析认为,水平井开发低阻油层具有优势,低水淹区和低阻油层中下部是主要开发潜力目标。研究对油田低阻油层开发具有指导意义。L60 of L Oilfield has developed a set of low resistance oil sand,which is an important potential for oilfield production.Using a combination of macroscopic and microscopic research methods,the macroscopic sedimentary environment and microscopic genesis of low resistivity oil reservoirs are studied.The results indicate that the sedimentary period of the low resistance strata in L60 formation was a shallow water braided river delta front sedimentary facies,with weak hydrodynamics.The main controlling source provided abundant intermediate acidic volcanic materials,and the ancient climate changed from warm climate to dry and cold climate.These factors are macroscopic factors in the formation of low resistance oil sand.On a microscopic level,higher bound water content and higher clay mineral content are the main controlling factors for the formation of low resistivity oil sand.Based on the analysis of the genesis and development performance data of low resistance oil reservoirs,it is believed that using horizontal wells to develop low resistance oil reservoirs has advantages,and low water flooded areas and low resistance oil reservoirs of lower L60 are the main development potential targets.This study has guiding significance for the development of low resistivity oil reservoirs.

关 键 词：低阻油层 束缚水含量 黏土矿物含量 

分 类 号：TE3[石油与天然气工程—油气田开发工程]