低温油井人工井壁材料研究

Study on artificial well wall material for low temperature oil well

针对低温油气井井漏或浅层低温地层出砂的问题,开展了低温固结人工井壁材料的研究。利用石英砂、有机树脂、分散剂,通过共混工艺制备了低温预固结材料,并将其与固化剂反应制得固结体。对低温预固结材料或固结体的微观形貌、热稳定性、接触角等进行了测试,并考察了固结体的抗压强度和渗透率。实验结果表明,固化剂与低温预固结材料在40~80℃反应时获得的固结体的抗压强度达7.0MPa,耐热温度达210℃;清水在固结体表面的接触角为91.1°、渗透率为0.1711×10^(-3)μm^(2)。制得的固结体作为人工井壁适用于低温油藏堵漏或防砂。

To solve the problems of well leakage in low temperature oil and gas wells or sand production in shallow low temperature formation,the research on low temperature consolidation artificial well wall material is carried out.A low temperature pre-consolidation material was prepared by blending quartz sand,organic resin and hydrophobic dispersant,and then reacted with curing agent to prepare consolidation.The micro-morphology,thermal stability and contact angle of low temperature pre-consolidation material or consolidation were analyzed.The compressive strength and permeability of the consolidation were also investigated.The results show that the compressive strength and thermal stability of the consolidation obtained from the curing agent and low temperature pre-consolidation material reach 7.0 MPa and 210℃respectively at 40-80℃.The contact angle of clear water on the surface of the consolidation is 91.1°and the permeability is 0.1711×10^(-3)μm^(2).The obtained consolidation is suitable for plugging or sand control in low-temperature reservoirs as artificial well wall.