Proppant pack.pdf
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7/25/2019 Proppant pack.pdf http://slidepdf.com/reader/full/proppant-packpdf 1/3 TEST PROPPANT PACK PERMEABILITY RELATED TO CONDUCTIVITY Problems: Are related to proppant at the post-fracture of hydraulic fracturing in Oligocene E reservoir, for example: Proppant damage factor, proppant scaling, proppant settling, proppant transport, proppant flow back to the surface, proppant embedment, less proppant fracture concentration at the post fracture (less lb/ft 2 is compare to API standard test proppant fracture conductivity 2lb/ft 2 ), etc. Thí Nghiệm A. Proppant pack 5 inch × 1.5 inch (cylindrical) B. End cap triaxial stress on cap when entire placed in a press C. Perforated rigged end supported plate D. Retaining screen E. Teflon sleeve system F. Test fluid entry/exit port G. Differential pressure sensing port H. Flow diffusing nozzle I. Pressure vessel J. Cavity containing hydraulic fluid. K. Port for applying biaxial stress/ hydraulic press L. O-ring seal gland.
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Transcript of Proppant pack.pdf
7/25/2019 Proppant pack.pdf
http://slidepdf.com/reader/full/proppant-packpdf 1/3
TEST PROPPANT PACK PERMEABILITY RELATED TO CONDUCTIVITY
Problems:
Are related to proppant at the post-fracture of hydraulic fracturing in Oligocene E reservoir,
for example: Proppant damage factor, proppant scaling, proppant settling, proppant
transport, proppant flow back to the surface, proppant embedment, less proppant fractureconcentration at the post fracture (less lb/ft2 is compare to API standard test proppant
fracture conductivity 2lb/ft2), etc.
Thí Nghiệm
A.
Proppant pack 5 inch × 1.5 inch (cylindrical)
B.
End cap triaxial stress on cap when entire placed in a press
C. Perforated rigged end supported plate
D. Retaining screen
E. Teflon sleeve systemF. Test fluid entry/exit port
G. Differential pressure sensing port
H. Flow diffusing nozzle
I. Pressure vessel
J. Cavity containing hydraulic fluid.
K. Port for applying biaxial stress/ hydraulic press
L. O-ring seal gland.
7/25/2019 Proppant pack.pdf
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Proppant pack permeability is calculated by equation below:
Using Darcy law:
=
∆
Where,
1.
q is the flow rate
2.
Lf is the length of propant pack in direction of flow, and
3.
A p is the cross-sectional area of proppant pack open to flow.
a.
To find the proppant pack permeability, fracturing fluid viscosity, length of proppant pack (5inch), ∆ p is differential pressure between inlet pressure and out
let pressure are known at pre-test.
b.
A p is the cross-sectional area was calculated by×.5
4= 1.77 2
c. Applied closure pressure on proppant pack is range from 500 psi to 1,000 psi.
d.
Proppant pack test for ISP proppant: 20/40 and 40/60 mesh size.
e.
Fluid 2 % KCl with 0.5 pptg (pound per thousand gallons) Guar gum or HPG.
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Simulation.
In order to find the real proppant fracture conductivity based on the closure pressure (psi),
proppant fracture concentration (lb/ft2), proppant pack permeability (md), the Mfrac
software is used for simulation proppant fracture conductivity (md-ft).
