STOPPING REINFORCEMENT AND APPARATUS FOR ITS FORCED SETTING ON A WELL HEAD STRUCTURE OF A BLOWING OIL WELL Russian patent published in 1994 - IPC

FIELD: oil wells exploitation. SUBSTANCE: apparatus has a pole with a supporting platform, that has movable telescopic arm of horizontal movement and a load lifting arm of vertical movement, with a mechanism of its keeping. A telescopic arm of horizontal movement is capable to move along the pole axis and has mechanisms of bringing it forward and bringing it back with fixation, an adjustable counterbalance and the joint of automatic orientation. The joint is located in the last section of the telescopic arm, just in the section, that is closest to the well head equipment and has mechanism of control and stopping. The vertical moving arm has mechanisms of bringing it forward and bringing it back with fixation. One of its ends is hinged to the horizontal moving arm and its other end through the pulling mechanism is connected with its keeping mechanism and stopping mechanism. The stopping mechanism has movable stopping members, that are connected to an executive mechanism with guiding bars located inside of it. The guiding bars are connected to each other in their upper parts to be tied with the pulling mechanism and connected to each other in their lower part to be tied with the supporting platform. The apparatus has fixed and movable pipelines. Movable pipeline has a calculated number of stopping members, mounted on the pipeline, and a stopping unit under them. The executive mechanism with a system of automatic fixation and remote control is made as a movable body with chambers. One of the chambers is filled with compressed air. It has a control nipple with a rod and is hydraulically tied with a cavity of movable pipeline, that is being inserted in well head equipment of freely blasting or burning oil well for its full or partial closing with controlled usage of the well contained stuff. EFFECT: apparatus is effective for stoppage of freely blasting wells or fires of drilling wells of any complexity at given depth. 11 cl, 11 dwg