Comprehensive Experimental Design of Polymer Crosslinked Gel Plugging for Drilling

Abstract

In order to further improve the comprehensive experimental skills of undergraduates and penetrate the concept of green chemistry education, a comprehensive experiment was designed to prepare polymer crosslinked gel plugging agent with polymer as the main agent and loofah pulp as the toughening material, and evaluate its effectiveness in simulating downhole leakage layer. This experiment applies organic/inorganic compound chemistry knowledge to the field of oilfield chemistry, and combines experimental skills with field work (TaHe Oilfield) to improve students' professional skills and oilfield field adaptability. TaHe Oilfield is the main position for the construction of tens of millions of tons of Northwest Oil Field. During the "Fourteenth Five-Year Plan" period, the large caves were basically under full control. How to develop small and medium-sized fractures and improve the use of reserves and realize the stable production of Tahe Oilfield is facing greater challenges. When adopting the "one well multiple control" method to develop small and medium-sized fractures and cavities, the key technical problem is the low success rate of plugging in carbonate fracture-cavity reservoirs, which requires plugging operations. Through this experiment, students can understand the mechanism of plugging agent in the leakage channel, and master the preparation and performance evaluation methods of gel plugging agent. Let students understand the site construction technology.