高强度低密度树脂覆膜陶粒研究

Study on High Strength and Low Density Resin Coated Ceramic Proppants

张伟民 李宗田 李庆松 陈文将 蒙传幼 崔彦立

ZHANG Wei-Min LI Zong-Tian LI Qin-Song CHEN Wen-Jiang MENG Chuan-You CUI Yan-Li

本文报道了一种低密度高强度树脂覆膜陶粒支撑剂的制备方法，讨论了酚醛树脂含量和偶联剂含量等及对覆膜低密度陶粒圆球度、密度、酸溶解度、破碎率及导流能力的影响，并采用覆膜低密度陶粒进行了现场试验。结果表明：树脂覆膜低密度陶粒比覆膜石英砂的视密度和体积密度分别降低8.1％和11.2％，69 MPa下二者的破碎率分别为1.7%和8.1%，树脂覆膜低密度陶粒的圆球度更好，短期导流能力能提高一倍以上。依据实验结果提出了树脂覆膜支撑剂对油导流能力高于对水导流能力的机理。采用树脂覆膜低密度陶粒在温米油田进行现场试验5井次，平均单井增油13.5 t/d，含水下降7.9%。

A method of manufacturing high strength and low density resin coated ceramic proppants was developed, and the effects of dosage of phenolic resin and coupling agent, et al, on the sphericity, roundness, acid solubility, turbidity, density, crush resistance and short term flow conductivity of the procured resin coated ceramic were also discussed. The results showed that the apparent density and bulk density of the resin coated ceramic particles(RCCP) decreased by 8.1% and 11.2%, respectively, compared to that of the resin coated quartz sand(RCQZ); and the crushing rate of the RCCP and RCQZ under 69 MPa was1.7% and 8.1%, respectively. The roundness of the RCCP was better than that of the RCQZ; as a result, the short term flow conductivity of the RCCP could be improved more than one time compared to that of the RCQZ. Based on conductivity data, the mechanism that the oil flow conductivity of the RCCP to was bigger than the water flow conductivity was proposed. The field test of the RCCP was conducted in 5 wells of Wenmi oil field. It was proved by field construction that the average yield of crude oil per well was increased by 1.35 t and the water cut per well decreased by 7.9%.