Cement mixing system for oil well cementing
US6749330B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 1, 2001 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Jul 2, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F25/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A powder mixing system and mixer for mixing cement used in cementing oil wells or other similar dry powder mixtures. The mixer is provided with a central recirculation jet and with annularly located alternating recirculation and mix water jets that discharge into the mixing chamber of the mixer in an overlapping fashion to effectively wet dry cement introduced into the mixing chamber. The mix water jets are formed from a set of slots provided both in a rotatable element and from another set of slots provided in a stationary portion so that when the rotatable element rotates, the size of mix water jets is adjusted. Two inlet elbows attach to the inlet of the central recirculation jet to cause the flow from the jet to rotate in a diverging pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.