TOOL FOR INSTALLING AND REMOVING COMPONENTS OF BORE-HOLE MOUTH EQUIPMENT Russian patent published in 1998 - IPC

FIELD: oil and gas production industry. SUBSTANCE: this relates to bore-hole mouth equipment and can be used in carrying out technological operations. Tool has body, screw which is connected with body by threaded joint, and rod seated inside screw. There is grip which is connected with body and is made in the form of stepped sleeve with thread and through-holes. Installed in holes are detents which are spring-biased relative to each other and are embraced by rope loop. Rod is provided with stop. At installing bore-hole mouth equipment, threaded surface of equipment comes in contact with threaded surface on smaller diameter of grip. In this case, detents are sunken in grip body due to movement of rod. Detents are extended under action of spring. Then, tool is introduced inside. Further motion of equipment is determined by scale. Aforesaid embodiment of tool increases its functional reliability and widens its operating potentialities. EFFECT: higher efficiency. 1 cl, 3 dwg