Productivity of a horizontal well

Journal Article · Wed Nov 01 04:00:00 EST 1989 · SPE (Society of Petroleum Engineers) Reservoir Engineering; (USA)

DOI:https://doi.org/10.2118/18298-PA· OSTI ID:5335874

Babu, D K ^[1]; Odeh, A S ^[2]

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1. Mobil Rand D Corp., Dallas, TX (US)
2. Reservoir Engineering Group, E and P Research Div., Mobil R and D Corp., Dallas, TX (US)

An equation for calculating the pseudosteady-state flow--i.e., the productivity--of a horizontal well is presented that is easy to use and identical in form to the well-known productivity equation for a vertical well. The equation was extracted from a very complex general solution. Application of the equation requires the determination of two parameters: a geometric factor that accounts for the effect of permeability anisotropy, well location, and the relative dimensions of the drainage volume and the skin caused by restricted entry, which accounts for the effect of well length. The paper gives simple equations for calculating these two parameters. The equation is used to study the effects on well productivity of well length, location and degree of penetration; vertical and horizontal permeabilities; and the horizontal dimensions of the drainage volume. It is concluded that, though each of these variables has a significant effect, the well length and degree of penetration have the strongest.

• OSTI ID: 5335874
• Journal Information: SPE (Society of Petroleum Engineers) Reservoir Engineering; (USA), Journal Name: SPE (Society of Petroleum Engineers) Reservoir Engineering; (USA) Vol. 4:4; ISSN 0885-9248; ISSN SREEE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ANISOTROPY
CALCULATION METHODS
DIRECTIONAL DRILLING
DRAINAGE
DRILLING
EQUATIONS
HORIZONTAL INTEGRATION
OIL WELLS
PARAMETRIC ANALYSIS
PERMEABILITY
PRODUCTIVITY
STIMULATION
WELL STIMULATION
WELLS