近来,在地质勘探定向钻进中,广泛采用AHC、CHВ-ол、ИНВ--Ⅲ、BCHB、AC、CHB-ИMP、TЗ、CBC、OBC(苏联)、汤姆森弧形偏斜器、《戴纳钻》、《纳维钻》(美国,加拿大、西欧、南非)等无楔滑动钻具或连续作用造斜器(OH及)代替固定式和可取式偏心楔。其中苏联研制的某些连续作用造斜器也在保加利亚人民共和国使用。与偏心楔式偏斜器比较,虽然这些连续作用造斜器有显著的优点,但也有不足 Recently, in the directional drilling of geological exploration, AHC, CHВ-ол, ИНВ-Ⅲ, BCHB, AC, CHB-ИMP, TЗ, CBC, OBC (Soviet Union), Thomson arc deflector, Non-wedge slip drills or continuous action whipstocks (OH & apos;) such as “diamond-in-place”, “diamond” and “diamonds from the USA” (USA, Canada, Western Europe, South Africa), instead of stationary and deformable eccentric wedges. Some of the continuous effect whipstocks developed by the Soviet Union were also used in the People’s Republic of Bulgaria. In contrast to eccentric wedges, these continuous whipstocks have significant advantages but are also deficient