Page tree

Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

InputsOutputs

Pipeline trajectory

LaTeX Math Inline
body{\bf r} = {\bf r}(l) = \{ x(l), \, y(l), \, z(l) \}

along-pipe distribution of stabilized pressure 

LaTeX Math Inline
bodyp(l)

Pipeline cross-section area 

LaTeX Math Inline
bodyA(l)

along-pipe distribution of stabilized flow rate 

LaTeX Math Inline
bodyq(l)

Along-pipe temperature profile 

LaTeX Math Inline
bodyT(l)


Fluid density

LaTeX Math Inline
body\rho(T, p)
and fluid viscosity 
LaTeX Math Inline
body\mu(T, p)

along-pipe distribution of stabilized average flow velocity 

LaTeX Math Inline
bodyu(l)
 

Inner pipe wall roughness

LaTeX Math Inline
body\epsilon


Assumptions

...

Stationary fluid flow
Homogenous fluid flow
Isothermal or Quasi-isothermal conditions

Constant cross-section pipe area

LaTeX Math Inline
bodyA(l)
along hole



Equations

...



LaTeX Math Block
anchor9QRCZ
alignmentleft
\bigg( 1 -  \frac{c(p) \, \rho_0^2 \, q_0^2}{A^2}   \bigg )  \frac{dp}{dl} = \rho(p) \, g \, \frac{dz}{dl}  - \frac{\rho_0^2 \, q_0^2 }{2 A^2 d} \frac{f(p)}{\rho(p)}



LaTeX Math Block
anchor1
alignmentleft
u(l) = \frac{\rho_0 \cdot q_0}{\rho(p) \cdot A(l)}



LaTeX Math Block
anchor1
alignmentleft
q(l) = \frac{\rho_0 \cdot q_0}{\rho(p)}


...

LaTeX Math Block
anchorgradP
alignmentleft
\frac{dp}{dl} = \rho \, g \, \sincos \theta - \rho \, v \, \frac{dv}{dl} - \frac{ f \, \rho \, v^2 \, }{2 d}

...

LaTeX Math Inline
bodyl

длина ствола скважины, отсчитываемая вниз от поверхности


LaTeX Math Inline
body\rho(l)
 

профиль плотности воды

LaTeX Math Inline
body\theta(l)

профиль угла наклона скважины к горизонту

Inclinational Deviation

LaTeX Math Inline
bodyd(l)

профиль диаметра скважины, вдоль которого идет поток

LaTeX Math Inline
bodyA(l)

профиль поперечного сечения ствола скважины

LaTeX Math Inline
bodyA(l) = 0.25 \, \pi \, d^2(l)

LaTeX Math Inline
bodyf(l)

профиль коэффициента трения Дарси

LaTeX Math Inline
bodyg

ускорение свободного падения ( = 9.87 м2/сек )



...

LaTeX Math Block
anchorgradP
alignmentleft
\frac{dp}{dl} = \rho \, g \, \sincos \theta - \rho \, v \, \frac{dv}{dl}

...

LaTeX Math Block
anchorgradP
alignmentleft
p(l) - \rho \, g \, l \, \sincos \theta +  \frac{1}{2} \rho \, v^2 = \rm const

...

LaTeX Math Block
anchor6JNN1
alignmentleft
\frac{dp}{dl} = \rho \, g \, \sincos \theta - \frac{\rho_s^2 \, q_s^2}{A}  \frac{d}{dl} \bigg( \frac{1}{A \, \rho} \bigg) - \frac{\rho_s^2 \, q_s^2 }{2 A^2 d} \frac{f}{\rho}

...

LaTeX Math Block
anchor9114L
alignmentleft
\sincos \theta = \frac{dz}{dl}

и уравнение для давление примет вид:

...