SU1145119A1 - Deep-well fishing device - Google Patents

Abstract

FISHING WELLS DEVICE, including a housing with a sub, a receiving tube, and a spring-loaded bushing installed in the housing cavity with a clamp for a flexible gripping element, characterized in that, in order to simplify the design, the receiving tube is made with a vertical squared groove and an annular boring on the inner surface for placing it in the form of a loop of the lower end of the gripping element, the housing with a window, and the spring-loaded sleeve with a shaped slot for accommodating a lock, made in the form of a rigid fastener nnogo flexible gripping element (A cop ball.

Description

4 SL I The invention relates to the oil industry, namely to devices for eliminating accidents with a cable and pipes of a submersible electrocentrifugal pump (ESP). A device for carrying out fishing operations associated with the extraction of pipes, cables and ESPs is known, which includes a hook-holding rod, a die and a corkscrew guide Cl 1. The disadvantage of this device is low efficiency due to the impossibility of lifting the cable in one run. The closest to the proposed technical essence and the achieved result is a fishing downhole device, including a housing with a sub, a receiving tube and a spring-loaded bushing with a retainer installed in the housing cavity for a flexible gripping element C3. The disadvantages of the known device are design complexity. The purpose of the invention is to simplify the design of the device. This goal is achieved by iTo in a fishing downhole device comprising a housing with a sub receiving tube and a spring-loaded sleeve with a retainer installed in the housing cavity with a retainer for a flexible gripping element, the receiving tube is made with a vertical through groove and an annular bore on the inner surface to be placed in it in the form of a hinge lower lobe of the gripping element, the housing with a window, and a spring-loaded sleeve with a shaped slit for accommodating a retainer made in the form of rigidly fastened with a flexible gripper ball element. FIG. 1 shows the device, a general view; in fig. 2 and 3, view A in FIG. 1, respectively, on the housing and the spring-loaded sleeve j in FIG. 4 cable fixing unit on an enlarged scale. The device comprises a housing 1 connected via a sub 2 with a catchment pipe 3. Inside the housing 1 and the fishing pipe 3, the sleeve 4 is spring-loaded relative to the housing 1 by means of the stop 5. A shaped slot 6 is made on the spring-loaded sleeve 4 the cavity of the spring-loaded sleeve 4 is inserted into the retainer in the 19j shape of the ball 8, rigidly fixed with a flexible gripping element, for example a cable 9. To the lower part of the housing 1 on the thread is attached a receiving pipe 10 with a vertical through groove 11 and an annular bore 12 and an inner surface for receiving therein a loop 13, the lower end of the cable 9. The device operates as follows. One of the known methods, for example, a seal being lowered on a cable, is used to determine the depth of a broken ESP cable. If the end of the pipe is above the broken cable, then with a tap or pipe turn some pipes are removed and removed from the well, so that the end of the broken cable is above the remaining pipes. On the cable 9, a device is lowered into the well to grip the cable until the broken end of the emergency cable is covered by the receiving tube 10. Then a tool is pulled down on the tubes to catch the device, for example, an inner pipe, and dock with the device. The entrance to the fishing pipe 3, the spearhead presses on the end of the spring-loaded sleeve 4. The load created on the sleeve 4 is controlled by the weight indicator on the lift. Under the action of the load, the spring-loaded sleeve 4 moves down to the stop 5, and the fitting slot 6 of the sleeve 4 aligns with the window 7 of the housing 1. The ball goes through the window 7 of the housing 1 from the sleeve 4. By tensioning the cable 9 through the groove 11 tighten the loop 13, located in the annular groove 12 of the receiving pipe 10, and capture the emergency end of the cable. When the cable 9 with the cable is in a tight position, half of the pipes with a trumpet and a device for gripping the cable are removed from the well. After removing the device, parallel to the cable 9 and the cable remaining in the well, the inner pipe is lowered into the well, the broken pipe is seized and at the same time the cable 9 and the cable are picked up, the pipes with the ESP are lifted from the well. The use of the proposed device provides acceleration of fishing operations when extracting the ESP with pipes and cable, and this is achieved by simpler means of comparison with the prototype.

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Claims (1)

CATCHING WELL DEVICE, comprising a housing with an adapter, a receiving pipe, and a spring-loaded sleeve with a clamp for a flexible gripping element installed in the cavity of the housing, characterized in that, in order to simplify the design, the receiving pipe is made with a vertical through groove and an annular bore on the inner surface for placement in it in the form of a loop of the lower end of the gripping element, the housing - with a window, and a spring-loaded sleeve - with a shaped slot to accommodate the latch, made in the form of rigidly fastened with flexible gripping element of the ball. SU ..,. 1145119> 1 ¹¹ 4-