Mechanically modified filter cake
US9140075B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 2011 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Jul 2, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/13
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A down hole tool including a compression surface, a compression surface axis, and at least one support member configured to attach the compression surface to a well drilling tool assembly, wherein the extendable support member is extendable by an extension force provided to the support member. The down hole tool is rotable relative to an axis of the well drilling tool assembly, and as the well drilling tool assembly rotates, the at least one compression device exerts a lateral force along a sidewall of a wellbore. Also, a method of forming filter cake comprising releasing a drilling fluid and contacting the drilling fluid with a mechanical pressure on the sidewall of the wellbore and the drilling fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.