Flash X-Ray Analysis of the Interaction of Perforators With Different Target Materials

Abstract

ABSTRACT Recent investigations have shown that target size and boundaries have a significant effect on the overall penetrating ability of perforators. This paper presents results of X-ray studies that were conducted in an effort to understand the physical mechanisms that caused the observed changes in penetration depth. These preliminary studies are necessary in order to develop a model for downhole penetration. This paper deals with the interactions that occur within large- and small-diameter targets, with different target boundaries, and with different target materials such as concrete, Berea, and limestone. The difference in performance for perforators shot into cores with kerosene rather than air in the pores is correlated with disturbances within the jet passing through the previously penetrated portions of the core. The X-rays show the origin of the interactions within the core and the resulting effect on the remaining portion of the jet.