CN109944550B - Exploration drill bit suitable for sand - Google Patents
Exploration drill bit suitable for sand Download PDFInfo
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- CN109944550B CN109944550B CN201910274437.7A CN201910274437A CN109944550B CN 109944550 B CN109944550 B CN 109944550B CN 201910274437 A CN201910274437 A CN 201910274437A CN 109944550 B CN109944550 B CN 109944550B
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Abstract
The invention relates to the technical field of exploration components, in particular to an exploration drill bit suitable for sand, which comprises an upper drill body, a lower drill body and a sand separation sleeve, wherein a water circulation isolation layer is arranged inside the lower drill body, a heat dissipation medium cavity is formed between the upper drill body and the lower drill body, the upper drill body is fixedly connected with the top of the lower drill body, a water inlet cavity and a return cavity which can be communicated with the heat dissipation medium cavity are symmetrically arranged in the upper drill body, a plurality of blades are arranged at the bottom of the lower drill body, the sand separation sleeve is sleeved outside the upper drill body, a separator is respectively arranged at the upper end and the lower end of the sand separation sleeve, a first helical blade is arranged outside the upper drill body, a second helical blade is arranged inside the water circulation isolation layer, a water flow energy absorber is arranged at the upper end of the second helical blade, a water flow energy absorber is arranged in the water inlet cavity, a feed inlet is arranged at the bottom end of the lower, the grid ring column penetrates into the bottom end of the water circulation isolation bin, and the sand circulation isolation bin can be fully suitable for exploration operation of sand.
Description
Technical Field
The invention relates to the technical field of exploration components, in particular to an exploration drill bit suitable for sand.
Background
The drill bit is a main component of drilling equipment and mainly used for crushing rocks and forming a borehole; the rotary drill bit is a drill bit commonly used in the petroleum industry at present, and can rotate under the drive of machinery, so that the whole drill bit is driven to perform centripetal motion, and rocks are cracked and broken through cutting and grinding, so that the effect of drilling downwards is achieved.
The drill bits used in the petroleum industry at present are of various types, the drill bits are classified according to different drilling modes and can be divided into diamond drill bits, roller cone drill bits and drag bit bits, the drill bits have obvious crushing efficiency on hard rock layers but are not suitable for sand exploration because of the self characteristics of sand, more sand and stones are arranged inside the drill bits, the drill bits with strong destructiveness cannot exert self advantages, and in the drilling process, the periphery of the conventional drill bits can be collapsed by the sand layers near a borehole, so that the outer surfaces of the drill bits are fully covered, the torsion of the drill bits can be greatly increased by means of the drilling machine, the overall energy consumption is increased, and the failure rate of the drill bits is relatively improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an exploration drill bit suitable for sand.
The invention discloses an exploration drill bit suitable for sand, which comprises an upper drill body, a lower drill body and a sand-isolating sleeve, wherein the upper drill body and the lower drill body are both of a hollow structure, a water circulation isolating layer is arranged inside the lower drill body, a heat-radiating medium cavity is formed by the water circulation isolating layer and the lower drill body, the upper drill body is fixedly connected with the top of the lower drill body, a water inlet cavity and a return cavity which can be communicated with the heat-radiating medium cavity are symmetrically formed in the upper drill body, a plurality of blades are arranged at the bottom of the lower drill body, the sand-isolating sleeve is sleeved outside the upper drill body, a feeding interval is reserved between the upper drill body and the lower drill body, a separator is respectively arranged in the upper end and the lower end of the sand-isolating sleeve, the sand-isolating sleeve is in hinged fit with the outer wall of the upper drill body through two separators, a first helical blade is arranged outside the upper drill body, a second helical blade is arranged inside the water circulation isolating layer, and a water, the water flow energy absorber is located in the water inlet cavity, the feed inlet is formed in the bottom end of the lower drill body, the grid baffle annular column is arranged in the feed inlet and penetrates through the bottom end of the water circulation isolation layer, and the grid baffle annular column is used for isolating the heat dissipation medium cavity from the feed inlet.
Further, the quantity of wing is four at least to the circumference interval along the lower brill body sets up in proper order, and the wing surface is equipped with a plurality of broken archs, and a plurality of broken holes have been seted up to broken protruding surface, and the wing is made for polycrystalline diamond compact material.
Further, the separator comprises a support ring, an oil feeding ring and a plurality of reinforcing ribs, the oil feeding ring is of a hollow structure and is fixed on the inner wall of the sand separation sleeve, the support ring is arranged on the inner ring of the oil feeding ring and is concentric with the inner ring of the oil feeding ring, the outer side face of the support ring is connected with the inner side face of the oil feeding ring through the reinforcing ribs, at least one reinforcing rib is of a hollow structure in all the reinforcing ribs, two ends of the reinforcing rib are respectively communicated with the guide ring groove and the oil feeding ring, an oil filling hole is formed in the outer surface of the sand separation sleeve and is communicated with the oil feeding ring, and a staggered steel ring which can be in rotary fit with the guide ring groove is.
Further, the water circulation isolation layer is around the annular section of thick bamboo that forms for the circumference along the lower brill body, the bottom of the upper brill body and the top of the lower brill body are open structure, the upper surface of annular section of thick bamboo flushes with the upper surface of the lower brill body mutually, the top cover of annular section of thick bamboo is equipped with the annular seal plate that can cover the upper surface of the lower brill body, the external diameter of annular seal plate is less than the external diameter on lower brill body top, and be used for the uncovered closure in upper end with the heat dissipation medium chamber, annular seal plate and lower brill body upper surface fixed connection, the lower surface of the upper brill body has been seted up and has been dodged the groove, dodge the groove and can supply the brill body to.
Furthermore, the water inlet cavity and the return cavity are both arranged between the inner wall and the outer wall of the upper drill body, the water inlet cavity and the return cavity penetrate through the upper drill body from top to bottom, the water flow energy absorber comprises a liquid wheel, a first umbrella tooth, a second umbrella tooth and a transmission main shaft, the transmission main shaft is vertically connected into the annular cylinder, the upper half section of the transmission main shaft extends into the upper drill body, a second spiral blade is sleeved on the transmission main shaft, a first umbrella tooth fixing sleeve is sleeved on the top end of the transmission main shaft, the second umbrella tooth is arranged beside the first umbrella tooth and meshed with the first umbrella tooth, the liquid wheel is connected inside the water inlet cavity in a shaft mode, the liquid wheel is fixedly connected with the second umbrella tooth in a coaxial mode, two connecting ports are arranged on the annular sealing plate, and the two connecting ports are respectively communicated.
Further, the spiral number of turns of the second helical blade is at least three turns, at least 1/3 parts of the second helical blade extend into the upper drill body, a discharge hole is formed in the outer portion of the upper drill body, and the discharge hole is located above the second helical blade.
Furthermore, two support rings are respectively arranged above and below the first helical blade, a material removing opening is formed between two adjacent reinforcing ribs in all the reinforcing ribs in each separator, and the material discharging opening corresponds to the pitch of the upper section of the first helical blade.
Furthermore, the top of the upper drill body is provided with a male connector, the bottom of the male connector is provided with a sealing gasket, and the sealing gasket is provided with two notches which can expose the openings of the water inlet cavity and the return cavity outside.
Furthermore, the bottom end of the sand separation sleeve extends to the top layer corresponding to the blade, the horizontal height of the upper surface of the sand separation sleeve is lower than that of the upper surface of the upper drill body, and the outer surface of the top end of the sand separation sleeve is provided with an internal thread.
Has the advantages that: the invention relates to an exploration drill bit suitable for sand, wherein an upper drill body is connected with a main shaft of a drilling machine through a male joint; the drill rod connected with the upper drill body is a spiral drill rod; and the drill rod is internally provided with a flow guide channel communicated with the water inlet cavity and the return cavity respectively so as to form a cold water circulating water channel; the sealing gasket is used for protecting the openings of the water inlet cavity and the return cavity after the upper drill body is connected with the output shaft/drill rod body, so that leakage cannot occur; the sand-isolating sleeve is connected with the extension sleeve by means of internal threads; then the lower drill body begins to descend, the lower drill body rotates by means of the acting force of the drilling machine, the surface layer of the ground is crushed by means of the blades, an exploration borehole is formed, then the upper drill body continuously enters the lower drill body, a large amount of sand and stones exist in the structural layer of the peripheral area of the borehole in the ground surface in the process, the sand and stones collapse at the moment, and then the sand separation sleeve can protect the upper drill body and the lower drill body, so that the rotation moment is prevented from being increased due to the fact that the sand separation sleeve is covered by the peripheral sand layer; meanwhile, in order to reduce the forward resistance of the blade part at the front end of the lower drill body, the first spiral blade drives the sand and stones in the blade area to rise by means of the structural characteristics of the upper drill body due to the rotation characteristics of the upper drill body; because the blade is made of a polycrystalline diamond composite sheet, the blade has good strength and toughness but poor heat dissipation effect, and simultaneously because of the characteristics of sand, a large amount of heat can be generated on the periphery of the blade and the lower drill body, a high-pressure water source is injected into the water inlet cavity at the moment, the high-pressure water source can flow in the water circulation isolation layer to generate a heat exchange effect, and the high-pressure water source returns to the ground by depending on the return cavity, so that the heat exchange purpose is achieved; and the high-pressure water source flow power promotes the water flow energy absorber to work, and the second helical blade rotates, so that the sand and stone which are butted against the bottom end part of the lower drilling body are lifted by the second helical blade after entering the water circulation isolation layer by virtue of the feed inlet, and the first helical blade and the second helical blade are synchronously matched, so that the sand and stone are conveyed quickly, and the sand and stone resistance of the crushing end of the lower drilling body is greatly reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a first schematic plan view of the present invention;
FIG. 5 is an enlarged view of FIG. 4 at B;
FIG. 6 is a first schematic view of a three-dimensional splitting structure according to the present invention;
FIG. 7 is an enlarged view at C of FIG. 6;
FIG. 8 is a second schematic plan view of the present invention;
FIG. 9 is a schematic illustration of a second three-dimensional split structure according to the present invention;
FIG. 10 is an enlarged view of FIG. 9 at D;
FIG. 11 is a third schematic view of the three-dimensional split structure of the present invention;
FIG. 12 is a partial perspective view of the first embodiment of the present invention;
FIG. 13 is a partial perspective view of the second embodiment of the present invention;
description of reference numerals: the drilling machine comprises an upper drilling body 1, a water inlet cavity 1a, a return cavity 1b, a staggered steel ring 1c and a discharge hole 1 r.
The drill body 2, the heat dissipation medium cavity 2a, the feed inlet 2b and the blocking annular column 2 c.
The blade 3, the crushing hole 3a and the crushing bulge 3 b.
The water circulation isolation layer 4, an annular sealing plate 4a, a connecting port 4b, a second spiral blade 4c, a liquid wheel 4d, a first bevel gear 4e, a second bevel gear 4f and a transmission main shaft 4 r.
A sand-isolating sleeve 5, a first spiral blade 5a and an oil filling hole 5 b.
The support ring 6, the guide annular groove 6a, the reinforcing rib 6b, the oil feeding ring 6c and the stripping port 6 d.
An internal thread 8.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 13, an exploration drill bit suitable for sand comprises an upper drill body 1, a lower drill body 2 and a sand separation sleeve 5, wherein the upper drill body 1 and the lower drill body 2 are both hollow structures, a water circulation isolation layer 4 is arranged inside the lower drill body 2, the water circulation isolation layer 4 and the lower drill body 2 form a heat dissipation medium cavity 2a, the upper drill body 1 is fixedly connected with the top of the lower drill body 2, a water inlet cavity 1a and a return cavity 1b which can be communicated with the heat dissipation medium cavity 2a are symmetrically arranged in the upper drill body 1, a plurality of blades 3 are arranged at the bottom of the lower drill body 2, the sand separation sleeve 5 is sleeved outside the upper drill body 1, a feeding space is reserved between the two cavities, a separator is respectively arranged in the upper end and the lower end of the sand separation sleeve 5 and is hinged and matched with the outer wall of the upper drill body 1 through two separators, a first helical blade 5a is arranged outside the upper drill body 1, the inside of hydrologic cycle isolation layer 4 is equipped with second helical blade 4c, and the rivers energy absorber is installed to second helical blade 4 c's upper end, and the rivers energy absorber is in intake antrum 1a, and feed inlet 2b has been seted up to the bottom of the lower drill body 2, is equipped with the annular post of check fender 2c in the feed inlet 2b, and this annular post of check fender 2c runs through to in the bottom of hydrologic cycle isolation layer 4 to be used for keeping apart heat dissipation medium chamber 2a and feed inlet 2b mutually.
The number of the blades 3 is at least four, the blades are sequentially arranged along the circumferential direction of the lower drill body 2 at intervals, a plurality of crushing protrusions 3b are arranged on the outer surfaces of the blades 3, a plurality of crushing holes 3a are formed in the outer surfaces of the crushing protrusions 3b, and the blades 3 are made of polycrystalline diamond composite sheets; the blade 3 rotates along with the upper drill body 1 and the lower drill body 2, and the blade 3 performs extrusion, beating and grinding effects on the rock by means of the crushing protrusions 3 b; the crushing holes 3a improve the friction force when the crushing bulges 3b contact with the outer surface of the rock layer, and accelerate the crushing efficiency; polycrystalline diamond compact material makes blade 3 stability strong, has high strength and impact toughness.
The separator comprises a support ring 6, an oil feeding ring 6c and a plurality of reinforcing ribs 6b, wherein the oil feeding ring 6c is of a hollow structure and is fixed on the inner wall of the sand separation sleeve 5, the support ring 6 is arranged on the inner ring of the oil feeding ring 6c and is concentric with the oil feeding ring 6c, a guide annular groove 6a is formed in the inner side surface of the support ring 6, the outer side surface of the support ring 6 is connected with the inner side surface of the oil feeding ring 6c through the plurality of reinforcing ribs 6b, at least one reinforcing rib 6b in all the reinforcing ribs 6b is of a hollow structure, two ends of the reinforcing rib are respectively communicated with the guide annular groove 6a and the oil feeding ring 6c, an oil filling hole 5b is formed in the outer surface of the sand separation sleeve 5, the oil filling hole 5b is communicated with the oil feeding ring 6 c; the sand separation sleeve 5 is used for abutting against sand and stones on the periphery of the upper drill body 1 and the lower drill body 2; due to the structural particularity of the sand land, after the upper drill body 1 and the lower drill body 2 are screwed into the ground surface by the blades 3 to form a well hole, the land structure around the well hole, namely a sand layer can be collapsed, so that the sand layer can be accumulated on the upper drill body 1 and the lower drill body 2, the subsequent torque force of the drilling machine during rotation of the upper drill body 1 and the lower drill body 2 is greatly improved, and the working environment of the upper drill body 1 and the lower drill body 2 is worsened; during the rotation process of the upper drill body 1 and the lower drill body 2, the sand-separating sleeve 5 only plays a role in protection, and the feeding space inside the sand-separating sleeve only provides a part of crushed sand source to pass through; in order to promote the first helical blade 5a to drive the sand to rise by virtue of the rotation when the upper drill body 1 works, the sand-separating sleeve 5 must be static/non-rotating, so that the upper drill body 1 and the lower drill body 2 rotate by virtue of the staggered steel ring 1c in the rotating process, specifically: in the rotating process of the upper drill body 1 and the lower drill body 2, the staggered steel ring 1c is in rotary fit with the inner part of the guide annular groove 6a, so that the sand-isolating sleeve 5 can be connected with the upper drill body 1, and the sand-isolating sleeve 5 does not rotate along with the upper drill body 1 and only axially displaces along with the upper drill body 1; the oil filling hole 5b is used for periodically discharging lubricating oil into the guide annular groove 6a, so that the working stability of the staggered rigid ring is ensured, the service life of the staggered rigid ring is prolonged, and the repair rate is reduced.
The water circulation isolation layer 4 is an annular cylinder formed by surrounding the lower drill body 2 along the circumferential direction, the bottom of the upper drill body 1 and the top of the lower drill body 2 are both in an open structure, the upper surface of the annular cylinder is flush with the upper surface of the lower drill body 2, an annular sealing plate 4a capable of covering the upper surface of the lower drill body 2 is sleeved at the top end of the annular cylinder, the outer diameter of the annular sealing plate 4a is smaller than that of the top end of the lower drill body 2 and used for closing the upper end opening of the heat dissipation medium cavity 2a, the annular sealing plate 4a is fixedly connected with the upper surface of the lower drill body 2, an avoiding groove is formed in the lower surface of the upper drill body 1, and the upper drill body 1 can avoid the annular sealing plate 4a and can be tightly attached to the upper surface of the lower drill body; the water inlet cavity 1a can pump cold water media into the heat dissipation medium cavity 2a, the cold water media fully flow in the heat dissipation medium cavity 2a, and the cold water media form upward flow through the return cavity 1 b; the annular sealing plate 4a prevents cold water medium in the heat dissipation medium cavity 2a from flowing into the upper drill body 1, namely the non-water inlet cavity 1a and the return cavity 1 b; the upper drill body 1 and the lower drill body 2 can be connected by using oxidation electric welding.
The water inlet cavity 1a and the return cavity 1b are both arranged between the inner wall and the outer wall of the upper drill body 1, the water inlet cavity 1a and the return cavity 1b penetrate through the upper drill body 1 from top to bottom, the water flow energy absorber comprises a liquid wheel 4d, a first bevel gear 4e, a second bevel gear 4f and a transmission main shaft 4r, the transmission main shaft 4r is vertically connected in an annular cylinder, the upper half section of the transmission main shaft 4r extends into the upper drill body 1, a second spiral blade 4c is sleeved on the transmission main shaft 4r, the first bevel gear 4e is fixedly sleeved at the top end of the transmission main shaft 4r, the second bevel gear 4f is arranged at the side of the first bevel gear 4e, the two are meshed with each other, the liquid wheel 4d is connected inside the water inlet cavity 1a in a shaft mode, the liquid wheel 4d is fixedly connected with the second bevel gear 4f in a coaxial mode, the annular sealing plate 4a is provided with two connecting ports 4b, and the two connecting ports 4b are respectively communicated with the water inlet cavity 1a and the return cavity 1 b; the upper drill body 1 is communicated with a drill rod, the drill rod is customized with a set structure, is communicated with the water inlet cavity 1a and the return cavity 1b, and is used for providing a cold water medium into the water inlet cavity 1a so as to achieve the purpose of radiating the upper drill body 1 and the lower drill body 2; because the water inlet cavity 1a vertically penetrates through the upper drill body 1, a cold water medium is conveyed by the high-pressure pump, namely a high-pressure water source, and when passing through the water inlet cavity 1a, the cold water medium is bound to contact the liquid wheel 4d, and the angle of the liquid wheel 4d is set, even if the blade surface of the liquid wheel can be fully contacted with water flow, so that the liquid wheel 4d can rotate due to the impact force of the water flow; the second bevel gear 4f is driven to rotate by the rotation of the liquid wheel 4d, and the first bevel gear 4e is indirectly meshed with the second bevel gear 4f, so that the transmission main shaft 4r is driven to rotate, the second spiral blade 4c is driven to rotate, and the sand source contacted with the bottom end of the lower drill body 2 is driven to rise by the acting force of the second spiral blade 4c due to the rotation of the second spiral blade 4c, so that the advancing resistance of the lower drill body 2 is reduced.
The number of spiral turns of the second spiral blade 4c is at least three, at least 1/3 parts of the second spiral blade 4c extend into the upper drill body 1, a discharge port 1r is arranged outside the upper drill body 1, and the discharge port 1r is positioned above the second spiral blade 4 c; the discharge port 1r is used for transferring the sand and stones contacted with the bottom end of the lower drill body 2 into the annular cylinder through the blocking annular column 2c, and then the sand and stones are driven to gradually rise through the rotation of the second helical blade 4c and are separated from the upper drill body 1 through the discharge port 1 r.
The two support rings 6 are respectively positioned above and below the first helical blade 5a, a discharging port 6d is formed between two adjacent reinforcing ribs 6b in all the reinforcing ribs 6b in each separator, and the discharging port 1r corresponds to the pitch of the upper section of the first helical blade 5 a; broken sand and stone are separated from the upper drill body 1 through the discharge hole 1r, then reach the first spiral blade 5a, form confluence with the sand and stone on the first spiral blade 5a, and rise with the acting force of the first spiral blade 5 a; the drill rod connected with the upper drill body 1 is a spiral drill rod for receiving the sand and stone conveyed upwards; the purpose of adopting two helical blades is that after the lower drill body 2 is screwed into the sand ground, the advancing resistance of the lower drill body 2 is large due to the characteristic of accumulated sand and stone, however, the crushing effect of the blade 3 on a sand layer area is not ideal, so that the first helical blade 5a and the second helical blade 4c are required to be synchronously matched in the early stage, and the advancing resistance of the lower drill body 2 is greatly reduced.
The top of the upper drill body 1 is provided with a male joint 7, the bottom of the male joint 7 is provided with a sealing gasket 7a, and the sealing gasket 7a is provided with two notches which can expose the openings of the water inlet cavity 1a and the return cavity 1 b; the male connector 7 is used for connecting a main shaft of the drilling machine; the sealing gasket 7a is used for protecting the openings of the water inlet cavity 1a and the return cavity 1b after being connected with the output shaft, and leakage cannot occur.
The bottom end of the sand-isolating sleeve 5 extends to the top layer corresponding to the blade 3, the horizontal height of the upper surface of the sand-isolating sleeve 5 is lower than that of the upper surface of the upper drill body 1, and the outer surface of the top end of the sand-isolating sleeve 5 is provided with an internal thread 8; the bottom end of the sand separation sleeve 5 is away from the blades 3 to leave a space for the blades 3 to contact the rock layer first; the purpose is to protect the periphery of the upper drill body 1 and the lower drill body 2 from sand only, and ensure that the rotation moment is not increased due to the fact that the periphery is covered by a peripheral sand layer; the internal thread 8 at the top end of the sand-separating sleeve 5 is used for connecting an elongated extension sleeve, namely, the first sand-separating sleeve 5 is fixedly connected with the upper drill body 1, the subsequent extension sleeve is gradually extended in a screw connection mode with the sand-separating sleeve 5, and the purpose of extension is to ensure continuous sand-proof protection after the lower drill body 2 is lowered into the deep layer of the ground.
The working principle is as follows: the upper drill body 1 is connected with a main shaft of the drilling machine through a male joint 7; the drill rod connected with the upper drill body 1 is a spiral drill rod; and the drill rod is internally provided with a flow guide channel communicated with the water inlet cavity 1a and the return cavity 1b respectively so as to form a cold water circulating water channel; the sealing gasket 7a is used for protecting the openings of the water inlet cavity 1a and the return cavity 1b after the upper drill body 1 is connected with the output shaft/drill rod body, so that leakage cannot occur; the sand-isolating sleeve 5 is connected with the extension sleeve by means of internal threads 8; then the lower drilling body 2 begins to descend, the lower drilling body rotates by means of the action force of a drilling machine, the surface layer of the ground is crushed by means of the blades 3, an exploration borehole is formed, then the upper drilling body 1 of the lower drilling body 2 continuously enters the lower drilling body, a large amount of sand and stones exist in a structural layer of a peripheral area of the borehole in the ground surface in the process, the sand and stones collapse at the moment, and then the sand-isolating sleeve 5 can protect the upper drilling body 1 and the lower drilling body 2, so that the rotation moment cannot be increased due to the fact that the upper drilling body and the lower drilling body are covered by the peripheral sand; meanwhile, in order to reduce the forward resistance of the front end blade 3 part of the lower drill body 2, the first helical blade 5a drives the sand and stone in the blade 3 area to rise by virtue of the structural characteristics of the upper drill body 1 due to the rotation characteristics of the upper drill body; because the blade 3 is a polycrystalline diamond composite sheet material, the strength and toughness of the material are good, but the heat dissipation effect is not good, and simultaneously because of the sand property, the blade 3 and the periphery of the lower drill body 2 can generate a large amount of heat, so that a high-pressure water source can be injected into the water inlet cavity 1a at the moment, the high-pressure water source can flow in the water circulation isolation layer 4, the heat exchange effect is generated, and the high-pressure water source returns to the ground by depending on the return cavity 1b, so that the heat exchange purpose is achieved; and the high pressure water source flow power impels the water flow energy absorber to work, and the second helical blade 4c rotates, so that the second helical blade 4c ascends after the sand and stone which is collided with the bottom end part of the lower drill body 2 enters the water circulation isolation layer 4 by the feed inlet 2b, and the first helical blade 5a and the second helical blade 4c are matched synchronously, so that the sand and stone are conveyed quickly, and the sand and stone resistance of the crushing end of the lower drill body 2 is greatly reduced.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (9)
1. An exploration drill bit suitable for sand, characterized by: the drilling tool comprises an upper drilling body (1), a lower drilling body (2) and a sand separation sleeve (5), wherein the upper drilling body (1) and the lower drilling body (2) are both of a hollow structure, a water circulation isolation layer (4) is arranged inside the lower drilling body (2), a heat dissipation medium cavity (2 a) is formed by the water circulation isolation layer (4) and the lower drilling body (2), the upper drilling body (1) is fixedly connected with the top of the lower drilling body (2), a water inlet cavity (1 a) and a return cavity (1 b) which can be communicated with the heat dissipation medium cavity (2 a) are symmetrically arranged in the upper drilling body (1), a plurality of blades (3) are arranged at the bottom of the lower drilling body (2), the sand separation sleeve (5) is sleeved outside the upper drilling body (1), a feeding space is reserved between the two, a separator is respectively arranged in the upper end and the lower end of the sand separation sleeve (5), and is in hinged fit with the outer wall of the upper drilling body (1) through two separators, go up the outside of boring body (1) and be equipped with first helical blade (5 a), the inside of hydrologic cycle isolation layer (4) is equipped with second helical blade (4 c), the rivers energy-absorber is installed to the upper end of second helical blade (4 c), the rivers energy-absorber is in intake antrum (1 a), feed inlet (2 b) have been seted up to the bottom of boring body (2) down, be equipped with check ring column (2 c) in feed inlet (2 b), this check ring column (2 c) run through to in the bottom of hydrologic cycle isolation layer (4) to be used for being separated from heat dissipation medium chamber (2 a) and feed inlet (2 b) and be insulated.
2. An exploration drill bit adapted for use in sand, according to claim 1, wherein: the quantity of wing (3) is four at least to along the circumference interval setting of the lower drill body (2) in proper order, wing (3) surface is equipped with a plurality of broken archs (3 b), and a plurality of broken holes (3 a) have been seted up to broken protruding (3 b) surface, and wing (3) are made for polycrystalline diamond compact material.
3. An exploration drill bit adapted for use in sand, according to claim 1, wherein: the separator comprises a support ring (6), an oil feeding ring (6 c) and a plurality of reinforcing ribs (6 b), the oil feeding ring (6 c) is of a hollow structure, and is fixed on the inner wall of the sand-separating sleeve (5), the support ring (6) is arranged on the inner ring of the oil-feeding ring (6 c), the two are concentric, the inner side surface of the support ring (6) is provided with a guide annular groove (6 a), the outer side surface of the support ring (6) is connected with the inner side surface of an oil feeding ring (6 c) through a plurality of reinforcing ribs (6 b), at least one reinforcing rib (6 b) in all the reinforcing ribs (6 b) is of a hollow structure, and its both ends communicate with in direction ring channel (6 a) and the oil feeding ring (6 c) respectively, and oil filler point (5 b) have been seted up to the surface of separating husky sleeve pipe (5), and oil filler point (5 b) communicate with in the oil feeding ring (6 c), and the outer wall cover of going up brill body (1) is equipped with can with direction ring channel (6 a) rotation fit's staggered steel ring (1 c).
4. An exploration drill bit adapted for use in sand, according to claim 1, wherein: the water circulation isolation layer (4) is around the annular section of thick bamboo that forms for the circumference along boring down the body (2), the bottom of the body (1) of going up and the top of boring down the body (2) are open structure, the upper surface of annular section of thick bamboo flushes with the upper surface of boring down the body (2) mutually, the top cover of annular section of thick bamboo is equipped with annular closing plate (4 a) that can bore down body (2) upper surface cover, the external diameter of annular closing plate (4 a) is less than the external diameter on boring down body (2) top, and be used for the upper end uncovered closure with radiating medium chamber (2 a), annular closing plate (4 a) and boring down body (2) upper surface fixed connection, the lower surface of the body (1) of going up has been seted up and has been dodged the groove, dodged the groove and can supply to bore body (1) and avoid annular closing plate (4 a) and hug closely with the upper surface of boring down the body.
5. An exploration drill bit adapted for use in sand, according to claim 4, wherein: the water inlet cavity (1 a) and the return cavity (1 b) are both arranged between the inner wall and the outer wall of the upper drill body (1), the water inlet cavity (1 a) and the return cavity (1 b) penetrate through the upper drill body (1) from top to bottom, the water flow energy absorber comprises a liquid wheel (4 d), a first umbrella tooth (4 e), a second umbrella tooth (4 f) and a transmission main shaft (4 r), the transmission main shaft (4 r) is vertically connected in the annular cylinder, the upper half section of the transmission main shaft (4 r) extends into the upper drill body (1), a second helical blade (4 c) is sleeved on the transmission main shaft (4 r), the first umbrella tooth (4 e) is fixedly sleeved at the top end of the transmission main shaft (4 r), the second umbrella tooth (4 f) is arranged beside the first umbrella tooth (4 e) and meshed with the first umbrella tooth, the liquid wheel (4 d) is axially connected inside the water inlet cavity (1 a), and the liquid wheel (4 d) is coaxially and fixedly connected with the second umbrella tooth (4 f), two joint ports (4 b) are formed in the annular sealing plate (4 a), and the two joint ports (4 b) are respectively communicated with the water inlet cavity (1 a) and the return cavity (1 b).
6. An exploration drill bit adapted for use in sand, according to claim 1, wherein: the number of spiral turns of the second spiral blade (4 c) is at least three, at least 1/3 parts of the second spiral blade (4 c) extend into the upper drill body (1), a discharge hole (1 r) is formed in the outer part of the upper drill body (1), and the discharge hole (1 r) is located above the second spiral blade (4 c).
7. An exploration drill bit adapted for use in sand according to claim 2 or 6, wherein: the two support rings (6) are respectively positioned above and below the first helical blade (5 a), a discharging port (6 d) is formed between two adjacent reinforcing ribs (6 b) in all the reinforcing ribs (6 b) in each separator, and the discharging port (1 r) corresponds to the pitch of the upper section of the first helical blade (5 a).
8. An exploration drill bit adapted for use in sand, according to claim 1, wherein: go up the top of boring body (1) and install male joint (7), the bottom of male joint (7) is equipped with sealed pad (7 a), has seted up two respectively can be with the uncovered breach outside of intake antrum (1 a) and return chamber (1 b) on sealed pad (7 a).
9. An exploration drill bit adapted for use in sand, according to claim 1, wherein: the bottom end of the sand separation sleeve (5) extends to the top layer of the corresponding blade (3), the horizontal height of the upper surface of the sand separation sleeve (5) is lower than that of the upper surface of the upper drill body (1), and the outer surface of the top end of the sand separation sleeve (5) is provided with an internal thread (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910274437.7A CN109944550B (en) | 2019-04-08 | 2019-04-08 | Exploration drill bit suitable for sand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274437.7A CN109944550B (en) | 2019-04-08 | 2019-04-08 | Exploration drill bit suitable for sand |
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| Publication Number | Publication Date |
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| CN109944550A CN109944550A (en) | 2019-06-28 |
| CN109944550B true CN109944550B (en) | 2020-06-30 |
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| CN115788279B (en) * | 2023-02-08 | 2023-04-21 | 山东新纪元岩土工程有限公司 | Pressure self-adjusting cis-slot flushing stratum drilling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2919244A1 (en) * | 2007-01-18 | 2008-07-31 | Halliburton Energy Services, Inc. | Casting of tungsten carbide matrix bit heads and heating bit head portions with microwave radiation |
| CN202073087U (en) * | 2011-01-08 | 2011-12-14 | 洪子云 | Soil-absorbing hole-forming drilling bit of diamond drill |
| US20130153306A1 (en) * | 2011-12-19 | 2013-06-20 | Smith International, Inc. | Fixed cutter drill bit heel and back-ream cutter protections for abrasive applications |
| CN104805832B (en) * | 2013-04-17 | 2017-06-09 | 罗海军 | A kind of bored pile construction method |
| CN203808848U (en) * | 2014-03-24 | 2014-09-03 | 杭州海勒科技有限公司 | (Polycrystalline Diamond Compact) PDC drill bit used for oilfield exploration |
| CN204060516U (en) * | 2014-09-13 | 2014-12-31 | 邹城兖矿泰德工贸有限公司 | Row's powder drill bit in dry type |
| US20160318101A1 (en) * | 2014-12-02 | 2016-11-03 | Halliburton Energy Services, Inc. | Integrated heat-exchanging mold systems |
| CN105041218B (en) * | 2015-08-18 | 2017-06-16 | 山东大学 | A kind of anti-collapse two-way rib winged injection grouting drill bit and its application method |
| CN206386088U (en) * | 2017-01-11 | 2017-08-08 | 四川金占机械制造有限责任公司 | A kind of anti-mud drum preventing sticking inserted tooth hob drill bit that can be cooled down |
| CN107165579A (en) * | 2017-05-22 | 2017-09-15 | 长江大学 | Soil compaction type is with pipe off-balance bit |
| CN108590511B (en) * | 2018-04-04 | 2020-02-14 | 中交第三公路工程局有限公司 | New technology and equipment for drilling in sandy cobble stratum |
| CN208168797U (en) * | 2018-05-11 | 2018-11-30 | 成都百施特金刚石钻头有限公司 | A kind of PDC drill bit with anti-mud drum function |
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