| 摘要 |
<p>The invention relates to an anchor for fixing the tubing in the string of the oil extracting wells in the construction of the tubing installations, plunger pump as a section for blocking the tubing on the inside of the well string. The anchor for fixing the tubing in the string of the oil extracting wells provides the tubing fixing by the fact that a cylindrical body (1) has a higher connection (8) wherein there is mounted a valve (A) for emptying the anchor, which consists of a gauged pin (6), a valve (10) and a valve seat (11) and the slips (2) may displace radially and perform the reinforcement on the interior side of the well string, being pushed by a rubber sleeve (3), which extends in diameter due to the pressure generated by the oil pumped inside an enclosure formed by an inner tube, provided with some orifices (c) for the inlet of the pressurized oil and the rubber sleeve (3), thereby it overcoming the force of some plate springs (5) which provide the withdrawal of the slips (2) and the assembly release, when, by introducing a supplementary interior pressure, there takes place the shearing of the gauged pin (6) given by a circular tool (7) in the construction of the valve (A) for anchor emptying, the pressures from the inside and the outside being equalized and the rubber sleeve (3) and the slips (2) returning in the withdrawn position.</p> |
