Air foam flooding is a very potential of EOR technology.According to the cor-rosion condition of air foam flooding in the process to add to the problems, we research and analysis of the composition of corrosion products,that the oxygen is the main factor to accel-erate the corrosion degree of the application of oxygen content as far as possible within 5%. The idea of "control of oxygen, upstream governance, joint corrosion and full monitoring"is proposed, which effectively guarantees the smooth development of the air foam flooding of Guan 15-2 block through the study of air foam flooding anticorrosion technology.

石南21井区试运行后期污水含油分散程度高,污泥沉降慢,水质净化困难,为此对原污水处理药剂配方进行调整,从而达到强化絮凝反应及提高净水的效果。采用改进后的重核催化—强化絮凝净水技术处理含油污水,其剩余浊度明显降低。从石南21井区注水水质及标准可看出,污水处理系统改进后出站污水悬浮物监测均值为2.4 mg/L,石油类、溶解氧含量很小,硫酸盐还原菌含量为25个/mL,硫化物均值为0.8 mg/L,腐生菌含量小于110个/mL,总铁均值为0.3 mg/L,水质达到注水指标要求。

在实验室条件下,通过试验考察温度、破乳剂浓度、压裂液浓度等因素对石南21井区压裂井产出原油的破乳和脱水的影响,从而找出最佳的破乳方法。试验结果显示,在压裂井产出的原油对原油破乳影响因素加大,通过化学和物理联合破乳脱水可以极大地提高破乳效果,缩短破乳时间。

At some old oilfields such as Dagang,the macro-pore formed in the long - term flood development,decrease the sweeping efficiency and increase the difficulty of EOR.Using PH-PAM cross linked with composite cross linking agent A as gelatin,which formula is that the molecular weight of 1.0 106,1%-3% PHPAM and 0.8%-1.4% of composite cross linking agent A.This blocking agent can keep stable at least 5 months in the reser-voir environment of 80?,13454 mg/I degree of mineralization.Also,it can block off the pore of high penetration core over 95% and its intensity at least 25 MPa/m.So,this blocking agent is fa-vorable for the water plugging of macro-pores.

现行使用的流量计多显示为体积流量,而油田生产中需对原油质量进行计量。原油一般粘度较大,含水量亦不稳定,科氏质量流量计(CMF)可以直接计量原油质量,且可连续测量,不受原油的物理参数的影响,计量精度高,在油田生产中应用广泛。直管式CMF是在弯管式CMF的基础上发展起来的,它除了具有科氏流量计的共同优点外,还在很大的程度上克服或减小了弯管式的某些缺点。

近年来我国油气田轻烃回收领域发展迅速,轻烃回收工艺日趋成熟,但在实际的分析中发现,各大油气田每年轻烃实际回收的数量与每年自地下的采出量有很大的区别,通常要少20%左右,那是因为轻烃的回收率除了受油气收集率和原油稳定率等因素的影响之外,还要受油气田处理装置等的影响。本文将着重介绍轻烃回收率的具体影响及其分析计算。

1.地震反射特征 研究区位于川东北断褶带的东北段,主要经历了燕山期及早、晚喜山期三期构造变形,主要形成有北北东、北西向构造,总的特点是褶皱强烈,断裂发育.