公开(公告)号：US09399727B2

公开(公告)日：2016-07-26

申请号：US14247578

申请日：2014-04-08

Applicant: PROP Supply and Service, LLC

Inventor： Zhijie Huang

IPC: E21B43/26 ,  C09K8/66 ,  C04B33/13 ,  C04B33/24 ,  C04B35/626 ,  C04B38/00 ,  C09K8/80 ,  E21B43/267

CPC classification number: C09K8/665 ,  C04B33/13 ,  C04B33/24 ,  C04B35/62695 ,  C04B38/009 ,  C04B2235/3201 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3232 ,  C04B2235/3272 ,  C04B2235/528 ,  C04B2235/5296 ,  C04B2235/5427 ,  C04B2235/72 ,  C04B2235/77 ,  C04B2235/9692 ,  C09K8/80 ,  E21B43/26 ,  E21B43/267

Abstract: A pellet made from a mixture of natural occurring clays comprising porcelain clay, earthenware clay, and kaolin clay. In some embodiment, the pellet has an alumina content between about 5.5% and about 35%, an apparent specific gravity from about 2.10 to about 2.55 g/cc, and a bulk density of from about 1.30 to about 1.50 g/cc. The pellet is useful in hydraulic fracturing of oil and gas wells, and has greater conductivity than sand at pressures up to 8,000 psi as measured by Stim-Lab after 50 hours and 275° F. on Ohio Sandstone, in the presence of deoxygenated aqueous 2% solution of KCI.

Abstract translation: 由天然粘土制成的颗粒，包括瓷土，陶土和高岭土。 在一些实施方案中，颗粒的氧化铝含量为约5.5％至约35％，表观比重为约2.10至约2.55g / cc，堆积密度为约1.30至约1.50g / cc。 颗粒在油气井的水力压裂中是有用的，并且在高达8,000psi的压力下具有更高的导电性，在Stim-Lab在50小时和275°F下测量，在Ohio Sandstone上，在脱氧水相2 ％的KCI溶液。