Well cementing methods and apparatuses
US10087709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2016 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Feb 26, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well cementing method includes combining a spacer polymer with a liquid in a first mixer and producing a spacer polymer blend yielding a spacer pumped into a well using a product pump. The method includes combining a cement additive with the liquid in the first mixer and producing a cement additive blend yielding a wellbore cement pumped into the well following the spacer using the product pump.Another well cementing method includes combining a cement additive with a liquid in a first mixer and producing a cement additive blend. The method combines bulk cement materials and the cement additive blend in a second mixer and produces a wellbore cement pumped into a well.A well cementing system includes a liquid pump, a first mixer, an additive feeder, a second mixer separate from the first mixer, a cement feeder, and a product pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.