It is shown, that in terrigenous sediments of Perm region atypical productive objects are encountered, composed of claystones, fractured siltstones and sandstones, quartzite-sandstones and quartzites; Conclusion is made, that in future importance of such reservoirs shall be greatly increased due to the very understandable reasons;including high extent of exploration and hydrocarbon reserves recovery from typical productive objects in terrigenous sediments.