CN203374233U - Milling cutter for cutting rubber sleeve of oil-water well - Google Patents

Abstract

Provided is a milling cutter for cutting a rubber sleeve of an oil-water well. The milling cutter for cutting the rubber sleeve of the oil-water well comprises an upper connector, a catch sleeve, a spacer sleeve, a magnet support, a guiding sleeve and magnetic strips, wherein the magnet support is installed in the guiding sleeve, the lower end of the magnet support is arranged on a platform shoulder of the interior of the guiding sleeve, a plurality of trapezoid grooves are evenly distributed in the magnet support, the outer side of each trapezoid groove is wide, the inner side of each trapezoid groove is narrow, the magnetic strips are placed into the trapezoid grooves, the section of each magnetic strip is trapezoid, the magnetic strips are matched with the trapezoid grooves formed in the magnet support so that the magnetic strips cannot be separated from the magnet support, the spacer sleeve is placed on the magnet support, the upper portion of the guiding sleeve is connected with the lower portion of the catch sleeve, the lower end face of the catch sleeve presses the spacer sleeve, the upper portion of the catch sleeve is connected with the upper connector, the magnetic strips cannot fall off, the inner sides of the magnetic strips can directly make contact with metal dropping objects, the magnetic strips are good in capacity of attracting the metal dropping objects, the metal dropping objects dropping into the oil-water well can be fished up, production of the oil-water well cannot be influenced, the frequency of off-production of the oil-water well can be reduced, and the milling cutter for cutting the rubber sleeve of the oil-water well achieves the remarkable economic benefit.

Description

Oil-water well cutting packing element milling cutter

Technical field

The utility model is the equipment that the oilfield oil well workover treatment is used, and is a kind of oil-water well cutting packing element milling cutter.

Background technology

In oil-water well production well workover process, will fall into plugging fluid circulation road in well after the packing element breakage on tubing string, cause the oil-water well reduce or stop production.In order to eliminate the impact of packing element on producing that come off, field by using technology and the method for multiple removing packing element, commonly used is to be lowered to junk mill to carry out milling.But because packing element is nonmetal, flexible again, common junk mill can't grind it, to making to salvage weak effect, remove not thoroughly, easily be hampered while causing operation sand washing, drifting, lower packet tubing string, not in place under equipment, the well workover difficulty increases, and the oil-water well off-time is long, causes heavy economic losses.

Summary of the invention

The purpose of this utility model is a kind of oil-water well cutting of design packing element milling cutter, when milling, packing element can be cut into to fragment, is convenient to packing element is removed totally in pit shaft.

The purpose of this utility model has been achieved in that junk mill, internal thread is arranged at junk mill top, there is passage inside, flushing hole is arranged at bottom, and there is row's clouds groove side, and passage communicates with flushing hole, flushing hole communicates with row's clouds groove, be symmetrically welded two blocks of gussets in the bottom of junk mill, several steel columns are installed on the interior hypotenuse of every block of gusset, sharp knife is arranged on steel column.

The beneficial effects of the utility model are: after the utility model touches packing element in pit shaft, ground rotates fishing string, make junk mill drive the sharp knife rotation on steel column, packing element can be cut into to fragment, make the packing element of chopping be pulled out by other fishing tool or to be gone out by liquid stream, pit shaft can be removed clean, oil-water well is produced unaffected, reduced oil-water well and stop production, there is significant economic benefit.

The accompanying drawing explanation

Accompanying drawing is that the utility model example structure is partly cutd open figure.

The specific embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described.

As seen from the figure, embodiment of the present utility model has junk mill 2, internal thread 1 is arranged at junk mill 2 tops, internal thread 1, can be connected with the fishing string on top, internal thread 1 can be that tubing round thread can be also drill rod thread, there is passage 3 inside of junk mill 2, passage 3 communicates with fishing string, flushing hole 5 is arranged at bottom, there is row's clouds groove 4 side, passage 3 communicates with flushing hole 5, flushing hole 5 communicates with row's clouds groove 4, be symmetrically welded two blocks of gussets 6 in the bottom of junk mill 2, several steel columns 7 are installed on the interior hypotenuse of every block of gusset 6, on steel column 7, sharp knife is arranged, steel column 7 is Hardmetal materials, make it that sharp knife of peak profit be arranged, can the fly-cutting packing element.Gusset 6 can the row's of obstruction clouds groove 4 and flushing hole 5.

Claims (1)

1. an oil-water well cuts the packing element milling cutter, junk mill (2) is arranged, internal thread (1) is arranged at junk mill (2) top, there is passage (3) inside, flushing hole (5) is arranged at bottom, there are row's clouds grooves (4) side, passage (3) communicates with flushing hole (5), flushing hole (5) communicates with row's clouds grooves (4), it is characterized in that: in the bottom of junk mill (2), be symmetrically welded two blocks of gussets (6), several steel columns (7) are installed on the interior hypotenuse of every block of gusset (6), and steel column has sharp knife on (7).

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