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Non-damaging bimodal stimulation composition and method of use thereof
US9587165B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9587165-B2 |
| Application number | US-90640910-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 18, 2010 |
| Priority date | Oct 18, 2010 |
| Publication date | Mar 7, 2017 |
| Grant date | Mar 7, 2017 |
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- Title
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- Abstract
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Abstract
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A method and apparatus for a bimodal stimulation composition for removal of thickness of a filter cake while minimizing fluid loss is provided. The bimodal stimulation composition includes water, a salt, an acid, and a viscoelastic surfactant.
First claim
Opening claim text (preview).
That which is claimed is: 1. A bimodal stimulation composition for use in a wellbore for controlled removal of filter cake present in a target production zone and for fluid loss prevention, the bimodal stimulation composition consisting of: 3% by weight formic acid; 15% by weight hydrochloric acid; a betaine surfactant comprising an alcohol group with between 2 and 4 carbon atoms; and 3% to 5% by weight potassium chloride; where the bimodal stimulation composition is operable to remove filter cake in the target production zone over a period of at least 24 hours, and where the viscosity of the bimodal stimulation composition during the extended reaction time increases such that fluid loss from the target production zone is minimized. 2. The bimodal stimulation composition of claim 1 wherein the betaine surfactant is present in an amount of between about 3% and 10% by volume. 3. The bimodal stimulation composition of claim 1 wherein the bimodal stimulation composition has a pH in a range of about 0 to 5.
Assignees
Inventors
Classifications
- C09K8/52Primary
Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning · CPC title
Viscoelastic surfactants [VES] · CPC title
Eroding chemicals, e.g. acids · CPC title
Methods or apparatus for cleaning boreholes or wells (E21B21/00 takes precedence) · CPC title
- C09K8/602Primary
containing surfactants · CPC title
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- What does patent US9587165B2 cover?
- A method and apparatus for a bimodal stimulation composition for removal of thickness of a filter cake while minimizing fluid loss is provided. The bimodal stimulation composition includes water, a salt, an acid, and a viscoelastic surfactant.
- Who is the assignee on this patent?
- Al-Mutairi Saleh Haif, Mohsen Abdul Hameed, Al-Dhufairi Mubarak A, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C09K8/52. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 07 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).