The accumulation of oil in the Noodle Creek field occurred on the first terrace of a prominent subsurface structure which is about 8 miles wide from east to west and about 6 miles across from north to south. Present information indicates several areas of known closure on this structural feature, while the remaining portion is known to be an area of considerable flattening of the dip between subsurface control points which are widely scattered on the east side of the structure. It is believed that the accumulation of oil is due to stratigraphy and structure. The absence of porosity in the Noodle Creek (Camp Colorado) limestone on the east side of the main structural feature retarded the movement of the fluid in the reservoir limestone and caused the accumulation to be entr pped on the first terrace of the main structural feature, where, coincidentally, the porosity was most favorable. A few minor accumulations of oil occur east of the principal accumulation but they are structurally higher and are possibly due to favorable channels of porosity from the main accumulation of oil to these points. The structural position of these minor accumulations indicates this fact, as they are located well down the flank on the local structures.

The initial low pressures would seem to indicate the lack of an effective propelling force to move the oil through the reservoir and they suggest that the gas in solution in the oil may have been the motivating force, since there was no gas cap in the field.