In this paper, the anti-invasion performance of the perimeter wall between the test pressures of the completion tool is analyzed. According to the conditions of the downhole tool pressure test such as test medium, test temperature, test pressure, and the possibility of dislodging the parts during the test, a combination of three types of perimeter wall structures is proposed: single steel plate, double steel plate + timber interlayer, and double steel plate + concrete interlayer. To meet the test pressure requirements, the three types of perimeter wall structure combinations are analyzed to determine more conservative structural dimensions by means of finite element simulation calculations and analyses, and the results of the analysis from the simulation of the Combination 1 structure are verified by means of the impact test.

test pressure room enclosure  /  intrusion resistanc  /  completion tool