Plasticized latex formulations for improved pumpability

a technology of plasticized latex and formulation, applied in the field of hydrocarbon streams, can solve the problems of latex particles agglomerating during pumping operations, injection failure, and the cost of pumping is reduced, so as to improve the ability to pump the drag and reduce the drag of the hydrocarbon composition

Inactive Publication Date: 2017-05-11
BAKER HUGHES HLDG LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method of reducing the drag of a hydrocarbon composition, such as crude oil, by adding a drag reducing composition. This composition includes a drag reducing latex with at least one plasticizer to improve its ability to be pumped into the hydrocarbon composition with certainty. The technical effect of this patent is to provide a way to reduce the drag of hydrocarbon compositions, which is important for the transport and use of these compositions.

Problems solved by technology

Reduction of the drag decreases the amount of energy needed to accomplish such flow, and therefore also decreases the costs associated with pumping.
However, in the case of the DRA being a latex, latex formulations are well known to have the problem of the latex particles agglomerating during pumping operations.
These agglomerated particles tend to be very hard and consequently may plug check valves in injection pump equipment leading to injection failure.
The latex particles may agglomerate or accumulate or collect into masses that cause other flow assurance problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Preparing an Approximate 100 Gallon (379 L) Drag Reducing Latex Batch

[0025]The drag reducing latex composition was made in a 150 gallon (568 liter) stainless steel reactor. The reactor was thoroughly cleaned and purged prior to manufacture of the product. The reactor was washed with deionized water before charging the raw materials. Only deionized water should be used in the manufacturing of this product, in most non-limiting embodiments. The following steps outline the typical steps.

[0026]A surfactant solution of the composition of Table I was charged to the reactor. STANFAX 1025 is available from PARA-CHEM®. TRITON X-100 is a non-ionic octylphenol ethoxylate surfactant available from Dow Chemical Company.

TABLE ISurfactant SolutionAmountAmountComponentin lbsin kgsSTANFAX 1025 72.2732.78(Sodium lauryl sulfate solution)TRITON X-10011.855.38Sodium phosphate monobasic0.750.34Sodium phosphate dibasic0.750.34Deionized Water344.62156.32Sodium Bromate0.730.33

[0027]The charge was followed b...

example 2

Pumping Plasticized and Non-Plasticized Drag Reducing Latex Compositions

[0038]Non-plasticized drag reducing latex compositions were prepared similar to Example 1, except that 2-ethylhexanol was not added at the end. Several batches were made of each composition to accumulate for a 250 gallon (946 liter) tote. Pump testing was conducted using a standard C-Frame FLO Injection skid which features plunger pumps and liquid ends with suction and discharge check valves. The test regimen was as follows. The tote containing approximately 250 gallons (946 liters) of product was connected to the suction of the injection skid using a flexible hose. The desired flow rate in gallons per hour (GPH, or liters per hour LPH) was set on the controller and could be monitored using the mass meter. The mass meter is also capable of totaling the volume of material pumped. The discharge of the pump skid featured a high pressure relief valve, which applied back pressure, to simulate injection into a high pr...

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Abstract

Hydrocarbon streams, such as crude oil streams, may have reduced drag when an effective amount to reduce drag of a drag reducing composition is added to a liquid hydrocarbon, where the drag reducing composition includes a drag reducing latex comprising at least one plasticizer in an amount effective to improve the ability to pump the latex into a hydrocarbon composition or stream with assured flow of the latex. Latex formulations are known to cause agglomerated particles during pumping operations, and the agglomerated hard particles tend to plug check valves in injection pump equipment, but the inclusion of at least one plasticizer reduces or prevents such problems.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is a continuation application from U.S. Ser. No. 14 / 606,626 filed Jan. 27, 2015, issued on as U.S. Pat. No. which in turn claims the benefit of U.S. Provisional Patent Application Ser. No. 61 / 978,272 filed Apr. 11, 2014, all of which are incorporated herein by reference in their entireties.TECHNICAL FIELD[0002]The invention relates to hydrocarbon streams and methods for making them where the hydrocarbon streams contain a drag reducing composition, and more particularly relates, in one non-limiting embodiment, to hydrocarbon streams and methods for making them where the hydrocarbon streams contain a drag reducing composition that comprises a latex, and in an additional non-limiting embodiment relates to improved drag reducing latexes.TECHNICAL BACKGROUND[0003]The use of drag reducing agents to reduce the effect of friction (“drag”) experienced by a liquid hydrocarbon, such as crude oil, flowing through a hydrocarbon transpo...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): C10L10/08C10L1/14C08J3/18C08K5/05C08K5/053
CPCC10L10/08C08K5/05C08K5/053C08J3/18C10L1/143C10L2270/026C10L2200/0259C10L2230/14C10L2250/04C10L2270/023C08J2333/10C08L33/08C09K8/035C09K2208/28C10G71/00C08F220/1808C08F220/06C08F212/08C10M107/28C10M129/84C10M169/04
InventorKOMMAREDDI, NAGESH S.FAIRCHILD, KEITH D.WARD, JACK B.POLAND, ROSSWEERS, JERRY J.
OwnerBAKER HUGHES HLDG LLC