Colorado Code
Article 61 - Oil Wells and Boreholes
§ 34-61-105. Casing to Exclude Water

When a water-bearing formation is encountered in the drilling of any borehole for natural gas or oil, casing shall be set upon the next formation encountered which is of such a nature that it will sustain the casing and exclude all water from the lower borehole.
Source: L. 15: p. 376, § 35. C.L. § 3648. CSA: C. 118, § 48. CRS 53: § 100-3-5. C.R.S. 1963: § 100-3-5.