Halliburton v. Honolulu Oil Corp.

COSGRAVE, District Judge.

The patent in suit, No. 1,930,987, granted to John T. Simmons, is for method and apparatus for testing the productivity of formations encountered in drilling oil wells and other deep wells. The method consists briefly in sealing off the formation or stratum to be tested from the strata above it by means of a packer, thus separating the two zones and relieving this stratum to be tested from the hy-' drostatic pressure of the rotary mud above it, and thus allowing the cognate fluids of the stratum to be tested to flow freely into the bore below point where the sealing…