Examples of wellbore

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This means that the outer solution does not match the local pressure behaviour at the wellbore, and has to be corrected.
Its purpose is to restrict the flux into the wellbore.
This can be accomplished only by choosing relatively small hole densities near the wellbore ends.
The pressure within the wellbore is higher than that within the pores of the formation.
To obtain the far field pressure induced by the horizontal wellbore, we replace the wellbore by an equivalent vertical fracture.
For this reason, even a small restriction of the wellbore cross-sectional area may induce a significant increase in the pressure loss along its length.
This creates pressure losses along the horizontal wellbore comparable to the applied drawdown pressure and therefore restricts the effective length of the horizontal wellbore.
We assumed that the horizontal wellbore is parallel to the reservoir boundaries, and it is located in middle of the reservoir thickness.
This leads to a boundary integral equation for the flux along the wellbore as a function of the total production rate.
Motivated by these experiments, we consider invasion of filtrate from a horizontal wellbore into pores of surrounding rock.
The appropriate boundary condition at infinity may be given in terms of the total flow rate from the horizontal wellbore.
The flux goes up with respect to the optimal flux in the middle part of the wellbore and down near the heel.
The productivity of a horizontal wellbore is compared with the productivity of a vertical fracture, having the same length and infinite hydraulic conductivity.
The parameter was therefore constant along the wellbore and equal to 0.135.
To correct the pressure field at the proximity of the wellbore, we now consider the local solution near the horizontal wellbore.
The aim of the operation is to cement a steel casing into the drilled wellbore.
The completion is perforated to enable the inflow of hydrocarbons from the formation into the wellbore, but should prevent sand invasion from the formation.
B.9), but are very small along the rest of the wellbore.
As one could expect, the uniformity of the flux leads to nonuniform reservoir drainage, enhancing the risk of coning development in the middle part of the wellbore.
The flux generated at infinity is the flux through the wellbore: y p = (x).

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