Adjustable well test sky pulley

Abstract

The invention discloses an adjustable well test sky pulley and relates to the technical field of oil and gas field equipment. The invention includes an arc-shaped pressing wire assembly, a pulley assembly and a pulley bracket assembly. The pulley bracket assembly includes a mounting seat, an adjusting screw nut, an adjusting screw, a pulley bracket, a rotation locking sleeve and a bracket locking sleeve, and one end of the pulley bracket It is used to install the pulley assembly, the other end is inserted into the adjusting screw rod and rotates relative to the adjusting screw rod through the radial bearing of the pulley; the rotary locking sleeve is sleeved on the adjusting screw rod and the adjusting screw nut for adjusting the screw rod and the adjusting screw rod Nut locking. The invention has simple structure and reasonable design, can adjust the height of the pulley, and smoothly separates the instruments captured at the well head.

Description

technical field [0001] The invention relates to the technical field of oil and gas field equipment, in particular to the technical field of oil and gas water well test well test blowout prevention devices, and more specifically relates to an adjustable well test sky pulley. Background technique [0002] Well testing is based on seepage theory, and uses various well testing equipment and testing instruments as means to monitor the dynamic and static state of oil, gas, and water wells, and interpret and analyze various physical parameters of oil and gas layers and oil wells through the obtained well testing data. The production capacity technology of gas, water wells provides a reliable basis for the exploration and development of oil and gas fields. [0003] During the well testing process, due to the failure of the depth sounder, the operator's work error, the excessive fluid production in the well, etc., the instrument top fell, and the instrument rope cap was successfully ...

AI Technical Summary

Problems solved by technology

[0003] During the well testing process, due to the failure of the depth sounder, the operator's work error, the excessive fluid production in the well, etc., the instrument top fell, and the instrument rope cap was successfully captured by the catcher installed at the lower end of the blowout box. For the lighter instrument string , using a manual method to separate the trap from the instrument. When taking out the instrument string, due to the short pulley bracket of the current test well sky, the distance from the second flat square on the upper part of the captured instrument string to the top of the blowout box is It is greater than the distance from the lower edge of the pulley to the mouth of the blowout nozzle. After the blowout prevention box is unfastened, the integral blowout prevention box, catcher, and instrument string cannot be pulled up until the retaining fork can be stuck to the second flat position of the instrument string. , the trap and the instrument string cannot be separated normally, and the instrument string cannot be taken out of the wellhead, which affects the progress of well testing

At present, the method of mechanical hoisting is mostly used on site. There are high costs for the crane to track the well and the risk of mechanical damage and equipment damage, which does not meet the needs of well test production.

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