Methods and compositions for use in oil and/or gas wells comprising a terpene alcohol

• US 10,287,483 B2
• Filed: 09/17/2015
• Issued: 05/14/2019
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Flotek Industries Incorporated
• Original Assignee: Flotek Industries Incorporated
• Inventors: Saboowala, Hasnain, Hill, Randal M., Ashcraft, Paul, Soeung, Melinda
• Primary Examiner(s): Washville, Jeffrey D
• Application Number:
  US14/857,138
• Publication Number:
  US 20160003018A1
• Time in Patent Office: 1,335 Days
• Field of Search: None
• CPC Class Codes: C09K 8/035 Organic additives
• CPC Class Codes: C09K 8/42 Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells compositions for plastering C09K8/50
• CPC Class Codes: C09K 8/58 Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
• CPC Class Codes: C09K 8/602 containing surfactants
• CPC Class Codes: C09K 8/64 Oil-based compositions
• CPC Class Codes: C09K 8/68 containing organic compounds
• CPC Class Codes: C09K 8/82 Oil-based compositions C09K8/64 takes precedence
• CPC Class Codes: C09K 8/86 containing organic compounds

Abstract

Methods and compositions comprising an emulsion or a microemulsion for use in various aspects of the life cycle of an oil and/or gas well are provided. In some embodiments, the emulsion or the microemulsion comprises an aqueous phase, a non-aqueous phase comprising a terpene alcohol a non-oxygenated terpene, and a surfactant, and optionally, one or more additives.

Claims

1. A method of treating an oil and/or gas well having a wellbore, comprising:

providing a pre-formed microemulsion;

adding the microemulsion to a fluid utilized in the life cycle of the oil and/or gas well;

injecting the fluid comprising the microemulsion into the wellbore and

reducing capillary pressure in the wellbore to increase oil and/or gas production from the well,

wherein the microemulsion comprises;

an aqueous phase;

a surfactant;

a non-aqueous phase comprising a first type of solvent and a second type of solvent, wherein the first type of solvent is a non-alcohol terpene and wherein the second type of solvent is present between about 5 wt % to about 40 wt % versus the total amount of the non-aqueous phase and the second type solvent is a terpene alcohol, wherein the terpene alcohol is a C_10-12 terpene alcohol, and/or is selected from the group consisting of terpineol, linalool, borneol, geraniol, menthol, citronellol, nerol, and nopol; and

a co-solvent, wherein the microemulsion comprises the co-solvent in an amount between about 5 wt % and about 35 wt % versus the total amount of the microemulsion composition.

2. The method of claim 1, wherein the first type of solvent is selected from the group consisting of menthone, d-limonene, terpinolene, β

-occimene, γ

-terpinene, α

-pinene, beta-pinene, dipentene, and citronellene.

3. The method of claim 1, wherein the first type of solvent is d-limonene.

4. The method of claim 1, wherein the non-aqueous phase is present in the microemulsion in an amount between about 3 wt % and about 50 wt % versus the total microemulsion composition.

5. The method of claim 1, wherein the microemulsion comprises between about 3 wt % and about 50 wt % of the non-aqueous phase and between about 10 wt % and about 50 wt % of the surfactant, versus the total microemulsion composition.

6. The method of claim 1, wherein the microemulsion comprises between about 1 wt % and about 95 wt % of the aqueous phase versus the total microemulsion composition.

7. The method of claim 1, wherein the microemulsion comprises the co-solvent in an amount between about 5 wt % and about 20 wt % versus the total microemulsion composition.

8. The method of claim 1, wherein the co-solvent is selected from the group consisting of methanol, ethanol, isopropyl alcohol, ethylene glycol, propylene glycol, dipropylene glycol monomethyl ether, triethylene glycol, and ethylene glycol monobutyl ether.

9. The method of claim 1, wherein the microemulsion comprises the surfactant in an amount between about 10 wt % and about 70 wt % versus the total microemulsion composition.

10. The method of claim 1, wherein the surfactant further comprises a first type of surfactant and a second type of surfactant.

11. The method of claim 1, wherein the microemulsion further comprises an alcohol.

12. The method of claim 1, wherein the microemulsion further comprises a freezing point depression agent.

13. The method of claim 1, wherein the microemulsion is present in an amount between about 0.5 gallons per thousand and about 100 gallons per thousand of the fluid utilized in the life cycle of the oil and/or gas well.

14. The method of claim 1, wherein the fluid utilized in the life cycle of the oil and/or gas well is selected from the group consisting of drilling fluids, mud displacement fluids, cementing fluids, perforating fluids, stimulation fluids, kill fluids, EOR/IOR fluids, and stored fluids.