PETROLEUM AT CONTROLLER BAY. 103 
conditions in the petroleum industry; and (g) to afford to lose the 
investment. 
3. The first wells should be located on the strike and at no crreat 
distance from producing wells, or down the dip from a good seepage 
and at such varying distances that the rocks outcropping at the 
seepage will be encountered at depths ranging from a few hundred 
feet to the limit (in depth) of drilling. 
4. Subsequent wells should be determined in position by the loca- 
tion of existing wells and by the structure. They should be along the 
strike and close a to productive wells, and either not along the strike 
and at a short distance or on the strike and at a considerable dis- 
tance from nonproductive wells. 
5. Drillers and tool dressers should be obtained from regions 
where there is difficulty in keeping the holes straight. 
6. If oil is obtained it will probably be down the dip rather than 
up the dip from a seepage, in shallow wells near a seepage, or in deeper 
wells farther from a seepage. 
a The distance should vary with the porosity of the containing horizon. 
