The primary goal of the operator in this field demonstration project was to evaluate the economic merits of use of ancillary materials in a conventional steam drive to improve sweep efficiencies by reducing injection into ''steam channels,''thus forcing the steam to enter alternate flow paths. This review was based upon the information published in Department of Energy reports, with supplementary information provided by the operator. The test was conducted on two different leases consisting of three contiguous 9-spot patterns on each lease. All of the wells in the test had been cyclically steamed, and continuous steam injection had begun about a year before the test began. Steam injection continued with one of the three paterns on each lease used as a control pattern with no chemical being injected. On the second pattern, a small volume of concentrated surfactant foaming agent, COR-180 and concentrated CMC polymer was injected into the steam line every week. Data and analyses are presented in this report suggesting that the ancillary material in the steam drive at North Kern Front did not affect the project oil recovery. This was a surprising result, since other laboratory and field tests indicate ancillary materials can divert steam flow and contribute to increased oil recovery. Further study revealed the reason for lack of success: the test area was overwhelmingly influenced by influx of water and oil from outside. A critique is given of the several evaluation methods attempted in this project to aid in the interpretation of future tests. 21 refs., 50 figs., 2 tabs.