| 摘要 |
<p>There is disclosed herein a systematic, computationally-efficient, two-stage method for determining well locations in a 3D reservoir model (302) while satisfying various constraints (308) including: minimum interwell spacing, maximum well length, angular limits for deviated completions, and minimum distance from reservoir and fluid boundaries. In the first stage, the wells are placed assuming that the wells can only be vertical (306). In the second stage, these vertical wells (306) are examined for optimized horizontal and deviated completions (314). The parameter to be optimized in both stages is a tortuosity-adjusted reservoir 'quality' (310). The quality is preferably a static measure based on a proxy value such as porosity, net pay, permeability, permeability-thickness, or pore volume. These property volumes are generated by standard techniques of seismic data analysis and interpretation, geology and petrophysical interpretation and mapping from existing wells. An algorithm is disclosed for calculating the tortuosity-adjusted quality values.</p> |
