锰矿粉添加陶粒支撑剂的制备与物理性能研究

Preparation andP hysical Properties of the Ceramic Proppants with Manganese Mineral Powder Addition

以阳泉III级铝矾土与木节土为主要原料,以锰矿粉作为添加剂,在1 500℃下常压烧结制备陶粒支撑剂。采用XRD、SEM对陶粒样品的物相组成与显微结构进行表征,测试了陶粒的视密度与破碎率。结果表明,陶粒支撑剂样品的主晶相为莫来石相,次晶相为刚玉相,锰粉添加量为4wt%的试样破碎率达到8.1%,显微形貌观察表明该成分的陶粒结构最致密。研究表明,以III级铝矾土与木节土为主要原料,锰粉添加量为4 wt%的陶粒支撑剂密度适中,抗破碎性能好,适用于非常规油气藏的水力压裂开采作业中。

Ceramic proppants were prepared through normal pressure sintering at 1500℃. The raw materials chosen were third-grade bauxite and kibushi-clay, both of which were produced in Yangquan. Maganese powder was se- lected as additive. Phase composition and microstructure of the ceramic proppants were characterized by XRD and SEM techniques. Apparent density and breakage ratio were tested. The results showed that mullite was the main phase and corundum was the secondary phase. The lowest breakage ratio was obtained in the composition with 4 wt. % manganese powder. The micrograph of the ceramic proppant in this composition indicated that it had the most dense structure. This study had shown the ceramic proppant with third-grade bauxite and kibushi-clay as the main starting materials and 4 wt% of manganese powder as additive manifested the moderate density and excellent anti-broken performance, which was applicable to hydraulic ventional oil and gas reservoirs.