# US 11,028,313 B2 · Nanoparticle carrier platform and methods for controlled release of subterranean well treatment additives

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- Number: US 11,028,313 B2
- Document ID: US11028313B2
- Status: Granted
- Kind: B2
- Application number: 16/811,128
- Filed: 2020-03-06
- Published: 2020-10-29
- Granted: 2021-06-08
- Earliest claimed: 2016-06-03
- Assignees: Tomson Technologies
- Applicants: Tomson Technologies
- Inventors: Chao Yan; Ross Tomson; Paula Guraieb; Nasser Ghorbani
- Web page: https://patentgrep.com/patent/US11028313B2

## CPC

- C09K 8/536: characterised by their form or by the form of their components, e.g. encapsulated material
- B01J 20/08: comprising aluminium oxide or hydroxide; comprising bauxite
- B01J 20/28004: {Sorbent size or size distribution, e.g. particle size}
- B01J 20/28007: {with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like (carbon nanostructures B01J20/205)}
- B01J 20/28016: {Particle form}
- B01J 20/3085: {Chemical treatments not covered by groups B01J20/3007 - B01J20/3078}
- C09K 8/03: Specific additives for general use in well-drilling compositions
- C09K 8/58: Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K 8/50: Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls (compositions for consolidating loose sand or the like around wells C09K8/56)
- C09K 8/524: organic depositions, e.g. paraffins or asphaltenes
- C09K 8/528: inorganic depositions, e.g. sulfates or carbonates
- C09K 2208/10: Nanoparticle-containing well treatment fluids
- C09K 2208/20: Hydrogen sulfide elimination
- C09K 2208/22: Hydrates inhibition by using well treatment fluids containing inhibitors of hydrate formers
- C09K 2208/26: Gel breakers other than bacteria or enzymes
- C09K 2208/28: Friction or drag reducing additives
- C09K 2208/32: Anticorrosion additives
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

Nano-sized mixed metal oxide carriers capable of delivering a well treatment additive for a sustained or extended period of time in the environment of use, methods of making the nanoparticles, and uses thereof are described herein. The nanoparticles can have a formula of: A/[Mx1My2Mz3]OnHm where x is 0.03 to 3, y is 0.01 to 0.4, z is 0.01 to 0.4 and n and m are determined by the oxidation states of the other elements, and M1 can be aluminum (Al), gallium (Ga), indium (In), or thallium (Tl). M2 and M3 are not the same and can be a Column 2 metal, Column 14 metal, or a transition metal. A is can be a treatment additive.

## Claims

### Claim 1

A nanoparticle having a formula of:
A/[Mx1My2Mz3]OnHm
where
M1, M2, and M3 are in the crystal lattice structure of the nanoparticle and M1 is a Column l3 element selected from aluminum (Al), gallium (Ga), indium (In), or thallium (Tl), M2 and M3 are each a Column 2 metal, a Column 14 metal, or a transition metal, with the proviso that M2 and M3 are different, and
x is 0.03 to 3, y is 0.01 to 0.4, z is 0.01 to 0.4 and n and m are determined by the oxidation states of the metals M1, M2, and M3.

### Claim 2 (depends on 1)

The nanoparticle of claim 1, wherein M2 and M3 are each independently beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra).

### Claim 3 (depends on 1)

The nanoparticle of claim 1, wherein M1 is Al, M2 is Mg and M3 is calcium (Ca).

### Claim 4 (depends on 1)

The nanoparticle of claim 1, having a diameter of 1 nm to 10,000 nm.

### Claim 5 (depends on 4)

The nanoparticle of claim 4, wherein the diameter is 10 nm to 1000 nm.

### Claim 6 (depends on 4)

The nanoparticle of claim 4, wherein the diameter is 10 nm to 200 nm.