Pipes, systems, and methods for transporting hydrocarbons

a technology of hydrocarbons and pipelines, applied in the direction of instruments, lighting and heating apparatus, and wellbore/well accessories, etc., can solve the problems of reducing the efficiency of pipelines, reducing the flow rate of produced fluid, and increasing pressure, so as to reduce the force required

Inactive Publication Date: 2006-08-24
SHELL OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] a reduced forc...

Problems solved by technology

Such wall deposits serve to reduce the efficiency of the pipeline because they block part of the pip...

Method used

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  • Pipes, systems, and methods for transporting hydrocarbons
  • Pipes, systems, and methods for transporting hydrocarbons
  • Pipes, systems, and methods for transporting hydrocarbons

Examples

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[0076] A flow loop for deposition testing was used. Test sections with different inner-wall roughness were installed. Deposition tests were conducted with a 6-day period with temperature-controlled pumping of a waxy crude oil from a deepwater field in the Gulf of Mexico. Summary results are shown in FIG. 13. In FIG. 13, “White” diamonds denote a PASS in a deposition test (i.e., zero or insignificant deposition), “Gray” triangles denote a MARGINAL result, and “Black” diamonds denote a FAIL (i.e., significant and quantifiable deposition). The x value is the Ra and the y value, wall shear stress, is calculated from fluid properties, flow rates, and pipe diameter. As FIG. 13 indicates, the said smooth Pipes B-D used in the test section of the flow loop showed significant reduction in deposition compared to smooth Pipe A (test FAIL). It should be noted that Pipe B is considerably smoother than Pipe A, traditional pipe. As FIG. 13 further indicates, the said smooth Pipe D used in the test...

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Abstract

There is disclosed a method of transporting a produced fluid through a pipe while limiting deposits at a desired pipe inner-wall location comprising providing a pipe having an inner surface roughness Ra less than 2.5 micrometers at said desired pipe inner-wall location, forcing the produced fluid through the pipe, wherein the produced fluid has a wall shear stress of at least 1 dyne per centimeter squared at said desired pipe inner-wall location.

Description

RELATED APPLICATIONS [0001] This application claims priority to U.S. Provisional Application 60 / 643,320 filed on Jan. 12, 2005, having attorney docket number TH1043. This application claims priority to U.S. Provisional Application 60 / 715,250 filed on Sep. 8, 2005, having attorney docket number TH2733. U.S. Provisional Application 60 / 715,250 and 60 / 643,320 are herein incorporated by reference in their entirety.FIELD OF INVENTION [0002] There is disclosed pipes, systems, and methods for transporting produced fluids from one or more wells, more particularly, there is disclosed deposit-growth retarding pipes, systems, and methods for transporting well production streams. BACKGROUND [0003] As produced fluid is transported through pipes in an environment that cools the fluid, for example to temperatures less than 5° C., for certain types of produced fluids, deposits may form on pipeline walls. Some of these deposits may be, for example, wax deposits as the wax solidifies due to the cold t...

Claims

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Application Information

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IPC IPC(8): C10G45/00
CPCE21B43/01F16L55/24E21B43/00E21B43/12
Inventor BALKANYI, SZABOLCS ROLANDBROZE, JAMES GEORGEESPARZA, JOSE OSCARHATTON, GREGORY JOHNMEHTA, AJAY PRAFULNIMMONS, JOHNNY FRANKTSAI, CHIEN KUEIWICKS, MOYE IIIZABARAS, GEORGE JOHN
Owner SHELL OIL CO
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