S Surfactant injection is one of the chemical injection methods used which is known as the surfactant flooding method. One of the alternative vegetable surfactants that have been tested on a laboratory scale is the Sodium Lignosulfonate (SLS) surfactant of bagasse. Research using other types of vegetable surfactants, namely spruce wood SLS surfactants, will be carried out to determine the compatibility of spruce SLS surfactants against phase tests and get optimal recovery factors. Spruce wood SLS surfactants are chosen because they are included in lignin and can be compared with bagasse SLS surfactants.The methodology used is experimental and analytical laboratory research. Compatibility test of spruce wood SLS surfactant solution with a concentration of 0.5% - 3% and salinity of 4,000 – 110,000 ppm, on two Berea cores with porosity of 25.15% and 25.52%, as well as permeability between 519 – 591 mD. Then the core flooding process is carried out with two coreholder positions, namely vertical and horizontal to find out the difference in recovery factor results.The results of the study using intermediate crude oil obtained the best results in the middle phase behavior test, namely at a salinity of 90,000 ppm with a concentration of 1.5%, salinity of 110,000 ppm with a concentration of 2.5% and salinity of 110,000 ppm with a concentration of 3%, where the total emulsion result was 15% at each salinity and concentration. The result of the aqueous stability test obtained is that the entire solution has a clear solubility. Furthermore, for the results of the thermal stability test, it was found that at a concentration of 2.5% and salinity of 110,000 ppm it was stable at 4.27 mN / m. The results of the coreflooding test obtained an additional recovery factor value of spruce wood SLS surfactants of 3.031% with a vertical coreholder position and 3.46% with a horizontal coreholder position