HYDRODYNAMIC INSERT DISPERSER Russian patent published in 1998 - IPC

FIELD: oil and gas production. SUBSTANCE: invention relates to drilling oil and gas holes, equipment for intensifying dissolution of drilling muds, dispersing of solid phase when activating agglomerated cements, and also to granulated and powdered substances used in mixes to build wells. Disperser contains hollow casing made of two parts joined to one another through coupling and nipple. The latter, in its tail part, has attachment and, in coupling part, screen-reflector made as a single block with casing. According to invention, tail part of coupling is made as truncated cone with half-cylindrical jet-directing grooves on its outer surface directed along its generatrices. Grooves are connected with screen holes. EFFECT: improved design. 2 cl, 2 dwg