LCM recovery tank
US9222319B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2014 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Nov 6, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An LCM recovery system that relies on gravity and density or specific gravity differences between three of the main components of drilling fluids, i.e., the mud and chemicals, lost circulation material (LCM) or additives, and drill solids or cuttings. Fluid enters the LCM recovery tank from the well via a flow line or mud gas separator return leg. Cuttings, having a greater density than additives, tend to settle and become trapped on the input side of the LCM recovery tank. The less dense fluid and entrained or suspended LCM tends to travel over the baffle near the center of the tank. LCM can then be efficiently returned to the active mud system for reconditioning or pumping downhole again.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.