岩性油气藏
巖性油氣藏
암성유기장
LITHOLOGIC RESERVOIRS
2011年
4期
129-132
,共4页
超稠油%油藏特征%生物降解作用%边顶水油藏%辽河油田
超稠油%油藏特徵%生物降解作用%邊頂水油藏%遼河油田
초주유%유장특정%생물강해작용%변정수유장%료하유전
super heavy oil%reservoir characteristics%biodegradation%top water and edge water reservoir%Liaohe Oilfield
辽河油田边顶水超稠油油藏具有构造平缓、岩石颗粒粗、物性好、成岩作用弱、非均质性较弱、油水关系复杂的特征。通过对该类油藏的成因探讨,认为生物降解作用是形成边顶水超稠油油藏的物质基础;水动力和水洗作用使浮力对原油运动力的影响变得极小;氧化作用形成的＂沥青壳＂阻止了地层水的下渗,有利于油藏的保存。
遼河油田邊頂水超稠油油藏具有構造平緩、巖石顆粒粗、物性好、成巖作用弱、非均質性較弱、油水關繫複雜的特徵。通過對該類油藏的成因探討,認為生物降解作用是形成邊頂水超稠油油藏的物質基礎;水動力和水洗作用使浮力對原油運動力的影響變得極小;氧化作用形成的＂瀝青殼＂阻止瞭地層水的下滲,有利于油藏的保存。
료하유전변정수초주유유장구유구조평완、암석과립조、물성호、성암작용약、비균질성교약、유수관계복잡적특정。통과대해류유장적성인탐토,인위생물강해작용시형성변정수초주유유장적물질기출;수동력화수세작용사부력대원유운동력적영향변득겁소;양화작용형성적＂력청각＂조지료지층수적하삼,유리우유장적보존。
Super heavy oil reservoir with top water and edge water in Liaohe Oilfield is characterized by gentle stru-cture,coarse rock particles,good physical properties,weak diagenesis,poor heterogeneity,no oil-water interface.The genesis of this special reservoir is discussed.The result shows that biodegradation is material basis,hydrodynamic force and water washing make the buoyancy affect crude oil movement little,and the ＂asphalt shell＂ formed by oxidation prevents the formation water infiltration,which is favorable for reservoir preservation.
