Analysis of the factors affecting well productivity

Factor in a fracturing fluid seems to well productivity is not greatly affected. By using a non-crosslinked linear guar gum  Fracturing   fluid, at a low rate limiting fracture height growth down to the overlying aquifer Lodgepole vertical well was successfully fracturing. Crosslinked fluids used in horizontal well section carrying sand.
Two factors: Proppant  concentrations seem right somehow oil production is not affected, but as the concentration increases, water production increases. Proppant concentration is usually laid by capacity constraints. Generally desirable that the concentration limits  Proppant  toe portion of the borehole. Because falling ball / naked eye packer systems tee small diameter, no milling ball seat, coiled tubing removal is impossible.
Three factors: increased fracture density may not improve the overall oil production data. Historical data show that the construction of other construction variable does not become the case, as the number of segments increases, oil production will not increase.
Four factors: Considering the maximum horizontal stress wellbore azimuth impact on overall oil production is small.
Five factors: the need to do extra work, including research areas borehole and geological changes, and thus to confirm the  fracturing   variables on well production results. It should be noted that because the lateral drilling and logging procedures, reservoir characterization is difficult. Although this study only for single-port wells Hirai, to analyze the factors affecting oil production. But I believe these analyzes can be used for multi-branch conclusions horizontal well completions.