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{| id="mp-left" style="width:100%; vertical-align:top; background:#f5fffa;"
{| id="mp-left" style="width:100%; vertical-align:top; background:#f5fffa;"
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| style="padding:2px;" | <h2 id="mp-tfa-h2" style="margin:3px; background:#0068b3; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #0068b3; text-align:left; color:#FFF; padding:0.2em 0.4em;">This week's featured article<span style="font-size:85%; font-weight:normal;"></span></h2>
| style="padding:2px;" | <h2 id="mp-tfa-h2" style="margin:3px; background:#0068b3; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #0068b3; text-align:left; color:#FFF; padding:0.2em 0.4em;">This week's featured page<span style="font-size:85%; font-weight:normal;"></span></h2>
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| style="color:#000;" | <div id="mp-tfa" style="padding:2px 5px">'''Multiphase flow'''
| style="color:#000;" | <div id="mp-tfa" style="padding:2px 5px">'''Hydraulic pumping'''


Much has been written in the literature regarding the multiphase flow of fluids in pipe. This problem is much more complex than the single-phase flow problem because there is the simultaneous flow of both liquid (oil or condensate and water) and vapor (gas). The mechanical energy equation (Eq. 3) is the basis for methods to estimate the pressure drop under multiphase flow; however, the problem is in determining the appropriate velocity, friction factor, and density to be used for the multiphase mixture in the calculation. In addition, the problem is further complicated as the velocities, fluid properties, and the fraction of vapor to liquid change as the fluid flows to the surface due to pressure changes. [http://petrowiki.org/Wellbore_flow_performance#Multiphase_flow Read more....]
Hydraulic pumping is a proven artificial lift method that has been used since the early 1930s. It offers several different systems for handling a variety of well conditions. Successful applications have included setting depths ranging from 500 to 19,000 ft and production rates varying from less than 100 to 20,000 B/D. Surface packages are available using multiplex pumps ranging from 15 to 625 hp. The systems are flexible because the downhole-pumping rate can be regulated over a wide range with fluid controls on the surface. Chemicals to control corrosion, paraffin, and emulsions can be injected downhole with the power fluid, while fresh water can also be injected to dissolve salt deposits. When pumping heavy crudes, the power fluid can serve as an effective diluent to reduce the viscosity of the produced fluids. [http://petrowiki.org/Hydraulic_pumping Read more....]
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#[http://petrowiki.org/PetroWiki PetroWiki]‏‎ (2,267,637 views)
#[http://petrowiki.org/Pipeline_design_consideration_and_standards Pipeline design consideration and standards‏]‎ (70,979 views)
#[http://petrowiki.org/Pipeline_design_consideration_and_standards Pipeline design consideration and standards‏]‎ (70,979 views)
#[http://petrowiki.org/Casing_and_tubing Casing and tubing]‏‎ (50,858 views)
#[http://petrowiki.org/Casing_and_tubing Casing and tubing]‏‎ (50,858 views)

Revision as of 15:08, 25 September 2014


This week's featured page

Hydraulic pumping

Hydraulic pumping is a proven artificial lift method that has been used since the early 1930s. It offers several different systems for handling a variety of well conditions. Successful applications have included setting depths ranging from 500 to 19,000 ft and production rates varying from less than 100 to 20,000 B/D. Surface packages are available using multiplex pumps ranging from 15 to 625 hp. The systems are flexible because the downhole-pumping rate can be regulated over a wide range with fluid controls on the surface. Chemicals to control corrosion, paraffin, and emulsions can be injected downhole with the power fluid, while fresh water can also be injected to dissolve salt deposits. When pumping heavy crudes, the power fluid can serve as an effective diluent to reduce the viscosity of the produced fluids. Read more....

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