摘要
油气两相流动增加了油流阻力 ;空化气泡的溃灭产生空蚀 ;油井生产时井眼内的气柱使井底压力降低 ,增大井壁发生剪切破坏的可能性 ;关井时气侵产液使井底压力升高 ,容易造成井壁的拉伸破坏。所有这些因素的综合作用 ,导致了油井出砂量大增。因此无论是进行出砂预测 ,还是进行防砂都有必要考虑气侵的影响。
Oil flowing resistance is increased by the two-phase flow of oil & gas. Gas corrosion is formed when the gas bubbles collapse. Gas column in borehole decreases bottomhole pressure during production, which increases the possibility of shear failure. Gas cutting during closing well increases bottomhole pressure, which increases the possibility of tension failure. All those factors cause sand production increased greatly. So it is necessary to consider the effects of gas cut both in sand production prediction and sand control al General Machinery Factory , Xi'an 710082, China)Abstract: Some different points of views,including the control scope of Rules of the Safety Technique Pressure Vessels, pressure class classification and their relationships are put forward Some problems concerned with the meterdependence coherence between the category classification and control scope of the pressure vessel are pointed out Key words: pressure vessel;safety technique;control scope;category classification
出处
《石油钻探技术》
CAS
北大核心
2000年第2期39-40,共2页
Petroleum Drilling Techniques
关键词
气侵
出砂
油井出砂
溶解气
gas cut, sand production, influence, theoretical analysis, cavitation, bottomhole pressure, jamin effect
