Plugging Composition Using Swellable Glass Additives
US-2015376492-A1 · Dec 31, 2015 · US
Cross-linked plugging agent stimulated by high density brine and preparing method thereof
US12168749B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12168749-B2 |
| Application number | US-202117505659-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 20, 2021 |
| Priority date | Feb 17, 2020 |
| Publication date | Dec 17, 2024 |
| Grant date | Dec 17, 2024 |
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- Title
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Abstract
Official abstract text for this publication.
The present invention disclosed a cross-linked plugging agent stimulated by high density brine which comprises: main agent: 21 wt %-53 wt %, gelling agent: 0.5 wt %-9 wt % and pure water; wherein the saline solution is selected from the group consisting of a Dipotassium phosphate (K 2 HPO 4 ), a Tripotassium phosphate (K 3 PO 4 ) and a Potassium pyrophosphate (K 4 P 2 O 7 ); the gelling agent is selected from the group consisting of a Xanthan gum and a kappa carrageenan. The gelling time is controlled within 0.5-12 h under an experiment temperature of 90° C.-160° C. The final gelling strength is controlled within D-H. The density is controlled within 1.2-1.55 g/cm 3 .
First claim
Opening claim text (preview).
What is claimed is: 1. A cross-linked plugging agent, comprising: a mixture of: 21 wt %-53 wt % of Potassium pyrophosphate (K 4 P 2 O 7 ) as a main agent; 5 wt %-9 wt % of Xanthan gum as a gelling agent; and pure water, wherein the amounts are based on the total weight of the crosslinked plugging agent, and wherein the mixture forms a high density brine. 2. The cross-linked plugging agent as recited in claim 1 , wherein a density of the cross-linked plugging agent is 1.2-1.55 g/cm 3 .
Assignees
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Classifications
characterised by their form or by the form of their components, e.g. encapsulated material · CPC title
containing cross-linking agents · CPC title
Methods or devices for cementing, for plugging holes, crevices or the like · CPC title
the phosphate binder being present in the starting composition solely as one or more phosphates · CPC title
- C09K8/426Primary
for plugging · CPC title
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- What does patent US12168749B2 cover?
- The present invention disclosed a cross-linked plugging agent stimulated by high density brine which comprises: main agent: 21 wt %-53 wt %, gelling agent: 0.5 wt %-9 wt % and pure water; wherein the saline solution is selected from the group consisting of a Dipotassium phosphate (K 2 HPO 4 ), a Tripotassium phosphate (K 3 PO 4 ) and a Potassium pyrophosphate (K 4 P 2 O 7 ); the gelling agent i…
- Who is the assignee on this patent?
- Univ Southwest Petroleum
- What technology area does this patent fall under?
- Primary CPC classification C09K8/426. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 17 2024 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).