"Methods of drilling and completing well bores "
US6877563B2 · kind B2 · utility
72Cited by
21References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2003 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Jul 16, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/52
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods of drilling and completing open hole well bores and methods of removing filter cake comprised of a gelling agent and calcium carbonate are provided. A method of the invention for removing filter cake comprised of a gelling agent and calcium carbonate from the walls of an open hole well bore is basically comprised of the steps of contacting the filter cake with a delayed clean-up solution comprised of water and a formate ester and removing the clean-up solution from the well bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.