气藏控水用疏水支撑剂制备及性能  

Preparation and performance of a hydrophobic proppant for water control in gas reservoir

作　　者：孙磊 覃孝平 吴均[2] 李翠霞 卢军凯 赵彬 SUN Lei;QIN Xiao-ping;WU Jun;LI Cuixia;LU Jun-kai;ZHAO Bin(School of Chemical Engineering,Sichuan University of Science and Engineering,Zigong Sichuan 643000,China;Drilling and Production Technology Research Institute,Jidong Oilfield Company PetroChina,Tangshan Hebei 063002,China)

机构地区：[1]四川轻化工大学化学工程学院,四川自贡643000 [2]中国石油冀东油田公司钻采工艺研究院,河北唐山064002

出　　处：《化学研究与应用》2023年第5期1270-1275,共6页Chemical Research and Application

基　　金：四川省科技计划重点研发项目(2019YFG0149)资助;自贡市重点科技计划项目(S000230)资助。

摘　　要：采用纳米二氧化硅和低表面能物质三甲氧基(1H,1H,2H,2H-十七氟癸基)硅烷对陶粒进行表面改性制得疏水支撑剂,通过傅里叶红外光谱和扫描电镜对疏水支撑剂的结构及其微观形貌进行表征,对疏水支撑剂的疏水性能、耐温性能、耐盐性能、控水性能、耐冲刷性能以及气相渗透率进行了研究。疏水支撑剂对应的接触角为141.23°,具有优良的疏水性能;温度和盐浓度对疏水支撑剂的接触角影响较小;与普通支撑剂相比,疏水支撑剂具有控水性能,并且表现出良好的耐冲刷性能;采用纳米二氧化硅和三甲氧基(1H,1H,2H,2H-十七氟癸基)硅烷对支撑剂进行表面改性对天然气在疏水支撑剂中的渗流能力影响较小。Hydrophobic proppant was prepared by surface modification of ceramsite with nano silica and low surface energy material trimethoxy(1H,1H,2h,2h-heptafluorodecyl)silane.The hydrophobic proppant and its micro morphology were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy.The hydrophobic performance,temperature resistance,salt resistance,water control performance,scouring resistance and Gas phase permeability of the hydrophobic proppant were studied.The corresponding contact angle of hydrophobic proppant is 141.23°,which has excellent hydrophobic performance;Temperature and salt concentration have little effect on the contact angle of hydrophobic proppant;Compared with ordinary proppant,hydrophobic proppant has water control performance and good scouring resistance;The surface modification does not affect the percolation ability of natural gas in hydrophobic proppant.

关 键 词：气藏控水 纳米二氧化硅 接触角 疏水支撑剂 

分 类 号：O634.41[理学—高分子化学]