Hydrate deposit inhibition with surface-chemical combination

Patent metadata

Field	Value
Publication number	US-10036489-B2
Application number	US-201113881321-A
Country	US
Kind code	B2
Filing date	Oct 24, 2011
Priority date	Oct 26, 2010
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

A system for producing and transporting crude oil, comprising a well for producing the crude oil; a processing facility for processing the crude oil; and a pipeline traversing at least a portion of the distance between the well and the processing facility, wherein at least a portion of the pipeline travels through an atmosphere having a temperature less than 20° C., wherein the pipeline comprises a coating on an inner surface of the pipeline, and wherein the crude oil comprises a surfactant additive.

First claim

What is claimed is:

1. A system for producing and transporting crude oil, comprising:
a well for producing the crude oil; a processing facility for processing the crude oil; and
a pipeline for transporting the crude oil from the well to the processing facility, wherein the pipeline comprises a minimally adhesive polymer coating prepared from siloxanes or fluorosiloxanes and wherein the crude oil comprises a surfactant.

2. The system of claim 1 , wherein at least a portion of the pipeline travels through an atmosphere having a temperature less than 20° C.

3. The system of claim 1 , wherein the coating is formed by self-assembly.

4. The system of claim 1 , wherein the pipeline is coated with an anti-agglomerate molecule.

5. The system of claim 1 , wherein the surfactant comprises a mixture of aromatic ether polysulfonates and alkoxyalcohol sulfates.

6. The system of claim 1 , wherein the surfactant comprises an organic sulfonate surfactant.

7. The system of claim 1 , wherein the surfactant comprises a nonionic surfactant.

8. A method of producing and transporting crude oil, comprising: extracting crude oil from a well; placing the crude oil in a pipeline to transport the crude oil away from the well; coating at least a portion of an interior surface of the pipeline with a coating, wherein the coating comprises a minimally adhesive polymer coating prepared from siloxanes or fluorosiloxanes; and adding a surfactant to the crude oil prior to placing the crude oil in the pipeline.

9. The method of claim 8 , wherein at least a portion of the pipeline travels through an atmosphere that has a temperature less than 20° C.

10. The method of claim 8 , wherein the coating is formed by self-assembly.

11. The method of claim 8 , wherein the pipeline is coated with an anti-agglomerate molecule.

12. The method of claim 8 , wherein the surfactant comprises a mixture of aromatic ether polysulfonates and alkoxyalcohol sulfates.

13. The method of claim 8 , wherein the surfactant comprises an organic sulfonate surfactant.

14. The method of claim 8 , wherein the surfactant comprises a nonionic surfactant.

Assignees

• Bhatnagar Gaurav
• Crosby Daniel Lee
• Hatton Gregory John
• Huo Zhongxin
• Shell Oil Co

Inventors

• Bhatnagar Gaurav
• Crosby Daniel Lee
• Hatton Gregory John
• Huo Zhongxin

Classifications

• E21B43/01

  specially adapted for obtaining from underwater installations · CPC title

• Y10T137/0391

  Affecting flow by the addition of material or energy · CPC title

• E21B37/06 Primary

  using chemical means for preventing or limiting {, e.g. eliminating,} the deposition of paraffins or like substances · CPC title

• B65D25/14

  Linings or internal coatings (of containers made by folding or erecting blanks made of paper B65D5/56 {; linings for domestic water storage heaters F24H1/183}) · CPC title

• F16L58/14

  by ceramic or vitreous materials · CPC title