DESCENT TOOL TO ADJUST AND TEST AN ANNULAR SEAL AND METHOD OF ADJUSTING AND TESTING AN ANNULAR SEAL

摘要

descent tool for adjusting and testing an annular seal and method of adjusting and testing an annular seal. The present invention relates to an embodiment of a descent tool (11) for adjusting and testing, a packoff seal (91) of a well tube suspension device (53) which has an elongated rod (13) provided with an axial passage (14), a body (49), a cam (23), a cam tail (43), an element coupling rod (65), and a piston (69). a method of adjusting and testing a packoff seal (91) comprises rotating the stem (13) in relation to the body (49) to a delivery position, thereby disengaging the engaging element (65) from the stem (13). the rod (13) moves axially in a downward direction in relation to the body (49), to seat the packoff (91). the engaging element (65) re-engages the rod (13) in a seating position fluid pressure is applied to the axial passage (14) to adjust and seal the packoff (91), thus moving the lowering tool (11) until an'adjustment position.