一、无固相不分散聚合物钻井液l基本组成:聚丙烯酰胺或多元乙烯基共聚物类絮凝剂、无机盐等l特点:絮凝剂可有效地絮凝钻井过程所产生的岩屑。l典型配方:(1)水+0.1~0.3%PHP+0.1~0.2%CaCl2或0.5~1%KCl(2)水+0.07~0.14%CPAM+0.1~0.3%TDC-15(低分子量有机阳离子)+0.2%CaCl2(3)水+0.1~0.3%FA-367+0.1~0.2%CaCl2或0.5~1%KCll适用范围:层理裂隙不发育、正常孔隙压力与弱地应力、中等分散砂岩与泥岩互层;已下技术套管的低压...
V+todo结构asksbtodosth.请(叫)某人做某事tellsbtodosth.请(叫)某人做某事helpsb(to)dosth.帮助某人做某事wantsbtodosth.想要某人做某事wishsbtodosth.希望某人做某事invitesbtodosth.邀请某人做某事drivesbtodosth.驱使某人做某事expectsbtodosth.期望某人做某事forbidsbtodosth.制止某人做某事forcesbtodosth.强迫某人做某事hopetodosth.希望做某事offertodosth.自动提出做某事plantodosth.计划做某事preparetodosth.准备...
1(see、hear、notice、find、feel、listento、lookat(感官动词)doeg:Ilikewatchingmonkeysjump2(比较级and比较级)表示越来越怎么样3apieceofcake=easy小菜一碟(容易)4agreewithsb赞成某人5allkindsof各种各样akindof一样6allovertheworld=thewholeworld整个世界7alongwith同一道,伴随eg:Iwillgoalongwithyou我将和你一起去thestudentsplantedtreesalongwiththeirteachers学生同老师们一起种树8Assoonas一怎么样就怎么样9as...