CN1245861A

CN1245861A - Submersible mud rotary table

Info

Publication number: CN1245861A
Application number: CN 99113107
Authority: CN
Inventors: 汪湛
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-19
Filing date: 1999-07-19
Publication date: 2000-03-01

Abstract

The submerged mud rotary table used in mechanical drilling machine industry is formed from rotary core, outer shell gland, bearing, bent pipe, bearing seat and rotary table ouwer shell. The bearing seat is mounted on the middle of the rotary core,and on the bearing seat the bearing and isolation pad are mounted, on the left side of rotary table outer shell the isolation pad and bearing are mounted, the rotary table outer shell is cover-mounted on the rotary core from bottom to top, then the bearing gand is mounted in the bottom portion of the rotary table outer shell, and on the upper portion of rotary table outer shell the packing gland is mounted, and on the top of rotary table outer shell the outer shell gland is mounted and fastened by means of screw. Said equipment in novel in structure, can solve the problem of pipeline and rotary table gas corrosion, and can raise the working efficiency of drilling machine and can save energy source, etc..

Description

Submersible mud rotary table

The present invention relates in the machine dimensions drill drilling well industry rotating disk dived beneath the water and extract a kind of device of underground silt.

Current exploiting groundwater technology both at home and abroad is based on the machine dimensions drill drilling technology, and all rigs all adopt the air rotating disk, and just rotating disk is more than the water surface, and underground silt is extracted in the positive and negative circulation of depended on pressure water.The superiority of this boring method only is confined to beat small-bore wellhole, beats bigbore wellhole and can only utilize anti-round-robin method from underground extraction silt.In taking out silt process, the line loss of drilling rod and the buffer brake that produces because of mud gravity in the main drilling rod have caused a large amount of cavitation erosions of air rotating disk, and at this moment the extracted amount of silt is quite rare, and whole bench drill machine is in the running status of slowing down.This state has increased the acting power consumption of rig drill bit, and concentration of hydraulic mixture is extremely rare, sand content is few, and flow is little, has reduced the production efficiency of rig significantly, the human and material resources and the energy have been wasted in a large number, cause mechanical tail gas that air ambient is polluted, drilling cost is increased, increased the cycle of changing and keeping in repair rig and component, prolong the duration of drilling well, increased the weight of driller's labour intensity.Therefore develop a kind of submersible mud rotary table is domestic and international machine dimensions drill drilling well industry new problem anxious to be solved always.

Purpose of the present invention be exactly for provide a kind of conceive science novelty, operating principle uniqueness, prospect extremely wide, solve pipeline and rotating disk cavitation erosion, improve rig operating efficiency, reduce drilling cost, runnability reliable, shorten the drilling well duration, the energy that uses manpower and material resources sparingly, reduce mechanical tail gas to the pollution of air, reduce the submersible mud rotary table of driller's labour intensity.

The object of the present invention is achieved like this: whole device is by changeing core, jackscrew, nut, screw, the shell gland, packing line pressure lid, the packing line, isolating pad, bearing, bend pipe, bearing support, the oiling screw, sealing mat, the rotating disk shell, bearing gland is formed, changeing core middle part dress bearing support, and spot welding is one, bearing and isolating pad are installed on bearing support, the packing line is wrapped in changes core top, changeing core bottom dress sealing mat, change winding packing line on the core in the sealing mat bottom, be one at rotating disk shell left surface dress bend pipe and weldering, at rotating disk outer casing underpart dress isolating pad and bearing, the rotating disk shell is overlapped on the commentaries on classics core of packing into from the bottom to top, bearing gland is installed in the rotating disk outer casing bottom, and tighten up with screw, cover at rotating disk shell upper sabot root line pressure, and nut and jackscrew are installed, tighten up at rotating disk cover top portion casing gland and with screw, at rotating disk shell left side dress oiling screw.Slush pump vacuum adds the top hose mud column, and tall and big pipeline produces cavitation erosion when the steam pressure of mud in this temperature, and main drilling rod mud column is tall and big, and both produce the discrepancy in elevation in flexible pipe mud column height, the rig operation of slowing down; Otherwise the pressure of the water surface is greater than the steam pressure under this temperature, and main drilling rod mud column higher primary school is in flexible pipe mud column height, and both do not produce the discrepancy in elevation, cavitation erosion then do not occur.Main points of the present invention are its form of structure and operating principle.Its operating principle and using method are: find that by test producing the rig running status key factor of slowing down is a whole set of pipeline cavitation erosion of drilling rod and slurry-sucking flexible pipe, and cavitation erosion produces the internal vertex of point at the air rotating disk.Energy conversion relation by mud in the law of conservation of energy rig pipeline is: the gravitional force of slush pump vacuum+flexible pipe mud column height=drilling rod, the hose line loss+mud column discrepancy in elevation

Cavitation erosion is that pressure at the water surface produces during less than the steam pressure under this temperature.Therefore, in the rig operation process, it is tall and big when the steam pressure of mud in this temperature that slush pump vacuum adds the top hose mud column, and the pipeline cavitation erosion has then produced.In the process of the test, obviously see cavitation erosion by transparent hose and be created in air rotating disk top, and to flexible pipe extension down, and still have flow in the transparent hose this moment, steam has occupied the most of space of flexible pipe, main drilling rod mud column is tall and big, and both produce the discrepancy in elevation in flexible pipe mud column height, and the operation of slowing down of rig is exactly to carry out in this case.Adopt submersible mud rotary table of the present invention then not have the discrepancy in elevation, the pipeline cavitation erosion also do not occur.Beat the deep-well of 50 meters of a glances according to taking a sample test common rig, need 5 to 7 day time, 250 to 300 kilograms of oil consumption, and the rig of employing submersible mud rotary table only needs 1.5 to 3 day time, 100 to 150 kilograms of oil consumption.During use, submersible mud rotary table is installed on the drilling rod of rig, the pipeline of slush pump is connected with rotating disk, just can carry out normal operation.

Concrete structure of the present invention is provided by following examples and accompanying drawing thereof.

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is an air rotary drilling operation schematic diagram.

Fig. 4 is a submersible mud rotary table rig operation schematic diagram.

With reference to accompanying drawing, whole device is by changeing core 1, jackscrew 2, nut 3, screw 4, shell gland 5, packing line pressure lid 6, packing line 7, isolating pad 8, bearing 9, bend pipe 10, bearing support 11, oiling screw 12, sealing mat 13, rotating disk shell 14, bearing gland 15 is formed, changeing core 1 middle part dress bearing support 11, and spot welding is one, bearing 9 and isolating pad 8 are installed on bearing support 11, packing line 7 is wrapped in changes core 1 top, changeing core 1 bottom dress sealing mat 13, change winding packing line 7 on the core 1 in sealing mat 13 bottoms, be one at rotating disk shell 14 left surfaces dress bend pipe 10 and weldering, at rotating disk shell 14 bottoms dress isolating pad 8 and bearing 9, rotating disk shell 14 is overlapped on the commentaries on classics core 1 of packing into from the bottom to top, bearing gland 15 is installed in rotating disk shell 14 bottoms, and tighten up with screw 4, at rotating disk shell 14 top sabot root line pressures lid 6, and nut 3 and jackscrew 2 are installed, also tighten up at rotating disk shell 14 top casing glands 5, at rotating disk shell 14 left sides dress oiling screw 12 with screw 4.Slush pump vacuum adds the top hose mud column, and tall and big pipeline produces cavitation erosion when the steam pressure of mud in this temperature, and main drilling rod mud column is tall and big, and both produce the discrepancy in elevation in flexible pipe mud column height, the rig operation of slowing down; Otherwise the pressure of the water surface is greater than the steam pressure under this temperature, and main drilling rod mud column higher primary school is in flexible pipe mud column height, and both do not produce the discrepancy in elevation, cavitation erosion then do not occur.

Submersible mud rotary table compared with prior art, have design science novelty, operation principle uniqueness, Prospect is extremely wide, solve pipeline and rotating disk cavitation erosion, improve rig operating efficiency, reduce drilling cost, Runnability is reliable, shorten the drilling well duration, the energy that uses manpower and material resources sparingly, reduce mechanical tail gas to the dirt of air Dye, reduce the advantages such as driller's labour intensity, will be widely used in the machine dimensions drill drilling well industry.

Claims

1, a kind of submersible mud rotary table, by changeing core, jackscrew, nut, screw, the shell gland, packing line pressure lid, the packing line, isolating pad, bearing, bend pipe, bearing support, the oiling screw, sealing mat, the rotating disk shell, bearing gland is formed, it is characterized in that: changeing core middle part dress bearing support, and spot welding is one, bearing and isolating pad are installed on bearing support, the packing line is wrapped in changes core top, changeing core bottom dress sealing mat, change winding packing line on the core in the sealing mat bottom, be one at rotating disk shell left surface dress bend pipe and weldering, at rotating disk outer casing underpart dress isolating pad and bearing, the rotating disk shell is overlapped on the commentaries on classics core of packing into from the bottom to top, bearing gland is installed in the rotating disk outer casing bottom, and tighten up with screw, at rotating disk shell upper sabot root line pressure lid, and nut and jackscrew are installed, tighten up at rotating disk cover top portion casing gland and with screw, at rotating disk shell left side dress oiling screw.

2, submersible mud rotary table according to claim 1, it is characterized in that: it is tall and big when the steam pressure of mud in this temperature that said slush pump vacuum adds the top hose mud column, pipeline produces cavitation erosion, main drilling rod mud column is tall and big in flexible pipe mud column height, both produce the discrepancy in elevation, the rig operation of slowing down; Otherwise the pressure of the water surface is greater than the steam pressure under this temperature, and main drilling rod mud column higher primary school is in flexible pipe mud column height, and both do not produce the discrepancy in elevation, cavitation erosion then do not occur.