Augmentation of well productivity using slant and horizontal wells

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:7075569

Joshi, S D

This paper presents an equation to calculate the productivity of horizontal wells and a derivation of that equation using potential fluid flow theory. This equation may also be used to account for reservoir anisotropy and well eccentricity (i.e., horizontal well location other than mid-height of a reservoir). The theoretical predictions were used to calculate the effective well bore radius and the effective skin factors of horizontal wells. Laboratory experiments using an electrical analog were also conducted. The present laboratory experimental data and also the laboratory data available in the literature show good agreement with the theoretical equation, indicating its accuracy. The paper also compares vertical, slant, and horizontal well productivity indices, assuming an equal drainage area. In addition, the comparison also assumes an equal reservoir contact area for slant and horizontal wells.

• Research Organization: Phillips Petroleum Co.
• OSTI ID: 7075569
• Report Number(s): CONF-861080-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ANISOTROPY
CALCULATION METHODS
COMPARATIVE EVALUATIONS
DIRECTIONAL DRILLING
DRILLING
FLOW RATE
FLUID FLOW
FORMATION DAMAGE
GAS SATURATION
GROUND WATER
HYDROGEN COMPOUNDS
INCLINATION
INTERSTITIAL WATER
NATURAL GAS WELLS
OIL WELLS
OXYGEN COMPOUNDS
PERFORMANCE
PERMEABILITY
PRODUCTION
RESERVOIR ROCK
SATURATION
WATER
WELLS