CN2668834Y - Grind-shoe bailing device for dropping article of well-drilling - Google Patents

Abstract

A grind-shoe bailing device for dropping article of well-drilling of the utility model integrates a milling shoe with a fetching cup. The upper end of a milling shoe body is welded with the fetching cup, and the lower end of the milling shoe is welded with a bistrique. A drilling tool joint and a central column of the fetching cup are welded with the milling shoe body. The upper end is an adaptor connecting a drilling tool, and a core water eye is communicated with the water eye of the drilling tool. Five water eyes and three basins are uniformly distributed on the bistrique, and the five water eyes are communicated with the core water eye. The radiation slit of hard-metal inserts whose arrangement adopts 16 DEG as a row is welded on the bistrique, and hard-metal inserts are intensively welded in the slit. When a metal accident of falling happens in drilling engineering, the integral grind-shoe bailing device of well drilling is put into the well bottom, grinding dropping articles in the well bottom and simultaneously cutting metal chip. As circulating mud is endlessly carried away from the well bottom into the fetching cup until metal junk is completely ground and salvaged, then the auger is pulled out from the mine mouth.

Description

Drilling well junk milling and catching device

One, technical field

The utility model relates in oil and gas well drilling or other drilling engineering, a kind of grinding to shaft bottom metal junk, the incorporate drilling well junk milling and catching device of salvaging.

Two, background technology

At present, in drilling engineering, adopt generally earlier down for handling shaft bottom metal fish accident that junk mill carries out grinding to the metal junk, trip out junk mill then and descend fishing cup or magnetic to drag for metal fragment after device is salvaged grinding even repetition operation again.This Refloatation method and fishing tool have following drawback: the one, when junk mill down carries out grinding to the shaft bottom to the metal junk by drilling rod, because of not fishing for the metal fragment that machines away immediately, and the generation Repeated Cutting, diminish the application life of junk mill.The 2nd, the junk mill hydrophthalmia only has the hydrophthalmia in bistrique center, forms grinding column in central authorities easily in grinding process; And hydrophthalmia is stopped up.The 3rd, after the metal junk grinding of shaft bottom, pull out of hole and to lay down junk mill and descend fishing cup or magnetic die salvaging again, the operation of many one trips has increased operator's labour intensity and break down time; And fishing cup or magnetic drags for the device salvaging of going into the well, and is also powerless to not cutting broken metal, so just must be again junk mill next time, grinding is salvaged again again, this has just increased the workload and the time of processing accident, must strengthen drilling cost.

Three, summary of the invention

The purpose of this utility model provides the drilling well junk milling and catching device that a kind of disposable limit broken of going into the well of salvaging shaft bottom metal junk is fished for.

The utility model is realized by this way: drilling well junk milling and catching device is that junk mill and fishing cup are combined into one.Junk mill body upper end welds together with fishing cup, junk mill body lower end welding bistrique, and tool joint, fishing cup central post and junk mill body are one, and the upper end is for connecting the joint of drilling tool, and the center hydrophthalmia is communicated with the drilling tool hydrophthalmia.Even five hydrophthalmias and three tanks of distributing on the bistrique, five hydrophthalmias are communicated with the center hydrophthalmia.The radiation trough of seting welding carbide tooth arrangement employing is a delegation for 16 ° on the bistrique, intensive seting welding carbide tooth in the trough.When occurring shaft bottom metal fish accident in the drilling engineering, monolithic drilling well milling and catching device is arrived the shaft bottom down, when shaft bottom metal junk is carried out grinding, the metal fragment that has cut, constantly dash by circulating mud and to bring in the fishing cup from the shaft bottom, until complete grinding, salvaged the metal junk, recurrence bore to propose well head.

Mill of the present utility model drags for the design of modular design, hydrophthalmia, the hard-metal insert arrangement design more becomes rationally, and is simple in structure, processing and manufacturing is easy, cost is low; Go into that well operations is easy to operate, dependable performance, effect be obvious.

Four, description of drawings

Fig. 1 is the utility model structural representation.

1-joint 2-central post 3-fishing cup 4-junk mill body 5-bistrique 6-center hydrophthalmia 7-bistrique hydrophthalmia 8-tank 9-hard-metal insert

Five, embodiment

As shown in the figure, drilling well junk milling and catching device is made up of tool joint 1, central post 2, fishing cup 3, junk mill body 4, bistrique 5, center hydrophthalmia 6, bistrique hydrophthalmia 7, tank 8 and hard-metal insert 9.Fishing cup 3 is inserted in tool joint 1, central post 2 and junk mill body 4 bottoms, firm welding, and bistrique 5 is welded on junk mill body 4 bottoms.On bistrique 5, be evenly distributed with the hydrophthalmia 7 of five different-diameters and three coupled tanks 8 with the degree of depth, five hydrophthalmias 7 are communicated with center hydrophthalmia 6, and three tanks 8 upwards extend to the rim of a cup of fishing cup 3 respectively through junk mill body 4 cylindricals and fishing cup 3 cylindricals from bistrique 5.The employing of the arranged distribution of the trough of seting welding carbide tooth 9 is a delegation for 16 ° on bistrique 5, and hard-metal insert 9 gathers welding-ons in trough.

In drilling engineering, when shaft bottom metal fish accident occurring, drilling well junk milling and catching device is connected on the drilling tool, down to the shaft bottom.After elder generation's turn on pump is used at the bottom of the mud clear well, rotation rotating disk drive milling and catching device carries out grinding to the metal junk in shaft bottom, simultaneously with mud by five hydrophthalmias on center hydrophthalmia 6 and the bistrique 5, circulation is brought the broken metal fragment of grinding into fishing cup, after grinding a period of time, strengthen pump delivery again the metal fragment that machines away is dashed from the shaft bottom, and bring in the fishing cup 3 along the annular space of three tanks 8 and the milling and catching device and the borehole wall.Disposable like this going into the well, the limit broken is fished for, and until the metal junk is cut broken the salvaging fully in the fishing cup 3, pulling out of hole proposes well head, promptly finishes the processing to accident.When drilling well junk milling and catching device is salvaged shaft bottom metal junk in grinding, the metal fragment of cutting is dashed when fishing cup is brought in the shaft bottom into, should adopt: the one, strengthen mud jet velocity and discharge capacity, earlier with after the grinding of float amount, just salvage with at a high speed big discharge capacity, better with this reciprocal operation effectiveness.The 2nd, dwindle bistrique hydrophthalmia and bottom hole spacing, milling and catching device is arrived the shaft bottom operation down as far as possible, to utilize fishing for of metal fragment.

Claims (1)

1, a kind of drilling well junk milling and catching device is that junk mill and fishing cup are combined into one, it is characterized in that junk mill body upper end welds together with fishing cup, junk mill body lower end welding bistrique, tool joint, fishing cup central post and junk mill body are one, the upper end is for connecting the joint of drilling tool, the center hydrophthalmia is communicated with the drilling tool hydrophthalmia, five hydrophthalmias and three tanks evenly distribute on the bistrique, five hydrophthalmias are communicated with the center hydrophthalmia, the radiation trough of seting welding carbide tooth arrangement employing is a delegation for 16 ° on the bistrique, intensive seting welding carbide tooth in the trough.

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