摘要
应用平面夹砂模型和微观防真模型研究了大庆油田碱 /表活剂 /聚合物三元复合体系驱油微观渗流机理 ,发现 ,所使用的复合体系具有降低油 /水界面张力、减小孔道中毛管力的作用 ;能够减小原油表面分子的内聚力 ,提高原油的变形能力和流动能力 ;能够使残余油乳化变形 ,易变形的油流渗流通过孔喉时被切割乳化 ,增加了原油的流动性 ,乳化后原油具有携带能力 ;在驱替过程中使油珠聚并形成富集油带 ;能够调节油 /水流度比 ,扩大波及面积 ;能够使残余油通过油桥连接。
The porous flow mechanism of alkalins/surfactant/polymer combination flooding in daqing oilfield is studied by using two-dimentional plane sandpack models and micro-optical model.It is found in the experiments that the ASP system used in Daqing oil field has several active properties.It can decrease oil/water interficial tension and capillary force in pores reduce the cohesion among molecules on oil surface while increase the cliformability and fluidity of oil;emulsify and deform the residual oil so as to improve the flowability thorgh the pour throats and enable the emulsified oil to get carring capacity;nake the coalescence of oil droplets and form enriched oil banks,adjust the mobility ratio of oil and water and spread sweeping area,make the residual oil connected by oil bridge and transferred by interface .
出处
《重庆大学学报（自然科学版）》
CAS
CSCD
2000年第z1期119-121,共3页
Journal of Chongqing University
关键词
大庆油田
碱/表活剂/聚合物三元复合体系
渗流机理
Daqing oil field
alkaline/surfactant/polymer combination system
porous flow mechanism
