Method for acid stimulating a subterranean well formation for improving hydrocarbon production
US6719054B2 · kind B2 · utility
81Cited by
14References
22Claims
0Family size
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Key dates
| Filing date | Sep 28, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Nov 24, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/255
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of stimulating a downhole formation according to which a plurality of jet nozzles are located in a spaced relation to the wall of the formation to form an annulus between the nozzles and the formation. An acid-containing, stimulation fluid is pumped at a predetermined pressure through the nozzles, into the annulus and against the wall of the formation. A gas is pumped into the annulus so that the stimulation fluid mixes with the gas to generate foam before the mixture is jetted towards the formation to impact the wall of the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.