Knowledge extraction from scientific documents plays an important role in the development of academic databases and services. We focus on the processing of abstracts to academic papers for the purposes of research data structuring that includes various subtasks, such as key phrase extraction and clustering. The use of abstracts is beneficial, because authors keep up with formal and stylistic requirements imposed by the publishers, and, therefore, informational and language patterns can be revealed. From our viewpoint, the existence of these patterns makes it possible to perform the cross-task application of techniques used for abstracts processing. The aim of the paper is to show it.