Chemical water soluble tracers ("WSTs") have been routinely used in hydraulic fracture stimulations in attempts to verify and quantify load recovery from multi-stage stimulations. Load recovery is often interpolated with production data by assuming percent chemical recovered for a given stage directly correlates to that stage's production contribution. This assumption is often verified by a running production logging tools. New solid chemical oil soluble tracers ("OSTs") can now be utilized as a direct indicator of oil flow and production from deep in an individual stages' fracture. Qualitative analysis gives an early "yes" or "no" to oil flow from each stage, while quantitative analysis may be achieved using relative concentrations of OSTs recovered, and reservoir and flow assumed conditions. OSTs may be used in conjunction with water soluble chemical tracers, or as a stand-alone tracer to determine oil flow from individual stages. The purpose of this paper is to introduce utilizing solid particulate OSTs as a viable methodology to understand individual fracture stage oil contribution in horizontal wells. The results presented in this paper were derived from a three well pilot project performed in the Lower Marmaton formation in Roger Mills County, Oklahoma. An investigation of hydraulic fracture stimulation efficiency was undertaken to determine if individual stimulation stages landed in either 100%, or only a portion of the pay sand, were contributing to the well's oil production. If so, to what extent? The reservoir pay thickness, along with the presence of second sand, influenced wellbore placement in that the drill bit can weave between the sands and the bounding shale layers. Also investigated was the magnitude the stimulation job had on offset producing wells. This was done by collecting and analyzing offset well production for the newly injected WSTs and OSTs. Preliminary results indicate offset communication between certain wells did occur, and the zones experiencing communication appear to have reduced contribution in the subject well's production.