Squeeze process for reactivation of well treatment fluids containing diatomaceous earth
US7686081B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2008 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Oct 30, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/267
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for fracturing a subterraneous formation in the production of an oil well is described. The process steps include injecting an initial charge of a mixture, the mixture being formed from at least diatomaceous earth and at least one well treatment agent, into a well bore formed in the subterraneous formation so as to form a down-hole matrix within the formation; injecting a solution comprised of an additional amount of the well treatment agent into the formation after the initial charge of the at least one well treatment agent has been substantially depleted; and then pressurizing the well bore for a time and under conditions sufficient to reactivate the down-hole matrix in the formation, so that the treatment agent activity of the matrix is increased relative to the treatment agent activity of the matrix just prior to injecting the solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.