CN104912478A - Drilling impact device - Google Patents
Drilling impact device Download PDFInfo
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- CN104912478A CN104912478A CN201510200366.8A CN201510200366A CN104912478A CN 104912478 A CN104912478 A CN 104912478A CN 201510200366 A CN201510200366 A CN 201510200366A CN 104912478 A CN104912478 A CN 104912478A
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Abstract
The invention provides a drilling impact device, which comprises a drill bit installing part (1), a transverse impact generating assembly and a longitudinal impact generating assembly, wherein the transverse impact generating assembly comprises a first casing (6) and a first reversing pipe (5); the first reversing pipe (5) is rotatably arranged in the first casing (6); the longitudinal impact generating assembly comprises a second casing (12), a longitudinal impact part and a transmission part; the longitudinal impact part and the transmission part are arranged in the second casing (12); and the transmission part drives the longitudinal impact part to do axial reciprocating movement through being driven by the first reversing pipe (5). The technical scheme of the invention effectively solves the problems of low drilling speed and low drilling efficiency of a PDC (Polycrystalline Diamond Compact) drill bit in the prior art.
Description
Technical field
The present invention relates to drilling engineering technical field, in particular to a kind of drilling well percussion mechanism.
Background technology
PDC drill bit (polycrystalline diamond compact bit) is a kind of drilling tool that geological drilling industry is commonly used.In use there are following two aspect problems in existing PDC drill bit:
(1) in drilling process, usually there is sticky, sliding, bit freezing phenomenon in drill bit, once there is this situation, drill string torsional deflection will be caused, when moment of torsion accumulates to a certain degree, external force disappears and causes moment of torsion to discharge fast, drill string torsional oscillation, and this engineering problem is comparatively serious, whole drilling process can be made unstable, meanwhile, above-mentioned situation easily causes the combined cut sheet on PDC drill bit to collapse tooth, causes PDC drill bit to lose efficacy, reduce bit life, also easily make drill bit release, bring out down-hole accident, reduce drilling efficiency to a certain extent.
(2) for the comparatively bad ground such as hard formation or abrasive layer, the depth of tooth penetration of drill bit is inadequate, and cannot meet the requirement to drilling depth, rate of penetration has much room for improvement.
At present, all kinds of drilling well percussion tools used in drillng operation can only produce axial impact force usually, not only can not solve that drill bit is sticky, sliding, bit freezing phenomenon, and the instability of aggravation is crept into and can be shortened bit life on the contrary.In the prior art, torsional pulse generator (patent No.: US 6742609BA2) adopts turbine drives jump bit to produce high-frequency torsional pulse, torsional impact drilling tool (number of patent application: 200910058083.9) utilize helicoid hydraulic motor to drive jump bit, these two kinds of drilling tools can produce torsional pulse power.But the raising only producing bit speed and drilling efficiency when torsional pulse power assists bit operation is very limited, and when running into the hard object such as rock, drill bit rock breaking capacity is poor.
Summary of the invention
Main purpose of the present invention is to provide a kind of drilling well percussion mechanism, with the problem that the bit speed and drilling efficiency that solve PDC drill bit of the prior art are lower.
To achieve these goals, the invention provides a kind of drilling well percussion mechanism, comprising: drill bit installation portion; Side knock generating assembly, comprises the first housing and rotating the first reversing tube be arranged in the first housing; Impact of collision generating assembly, comprise the second housing and the impact of collision portion that is arranged in the second housing and driving section, driving section drives impact of collision portion to make axially reciprocating under the driving of the first reversing tube.
Further, side knock generating assembly is arranged on one end of drill bit installation portion, and impact of collision generating assembly is arranged on one end away from drill bit installation portion of side knock generating assembly.
Further, the two ends vertically in impact of collision portion are formed with the first actuator chamber and the second actuator chamber, the inside of the first reversing tube is provided with the first low pressure liquid passage, inside, driving section is provided with and the highly pressurised liquid passage of the first low pressure liquid channel connection and the second low pressure liquid passage, one in first actuator chamber and the second actuator chamber with the second low pressure liquid channel connection time, another and highly pressurised liquid channel connection in the first actuator chamber and the second actuator chamber.
Further, driving section comprises intervalve and the second reversing tube, intervalve is fixedly connected in the second housing, impact of collision portion is arranged between the inwall of intervalve and the second housing, first actuator chamber and the second actuator chamber are arranged between the inwall of intervalve and the second housing, second reversing tube to be arranged in intervalve and to be connected and synchronous axial system with the first reversing tube, and in the second reversing tube, formation highly pressurised liquid passage, forms the second low pressure liquid passage between the second reversing tube and intervalve; Intervalve is provided with first intercommunicating pore corresponding with the first actuator chamber position and second intercommunicating pore corresponding with the second actuator chamber position, first intercommunicating pore and the second intercommunicating pore are arranged in the circumferential misalignment along intervalve, second reversing tube is provided with the first radial communication pipe coordinated with the first intercommunicating pore and the second radial communication pipe coordinated with the second intercommunicating pore, the end of the first radial communication pipe and the second radial communication pipe all fits with the inwall of intervalve.
Further, impact of collision portion comprises the jump bit be set on intervalve, and jump bit can moving axially along intervalve, and impact of collision portion also comprises the first locating piece be arranged in the first actuator chamber and the second locating piece be arranged in the second actuator chamber.
Further, driving section also comprises throttling arrangement, throttling arrangement is positioned at the second reversing tube one end near the first reversing tube, and throttling arrangement is communicated with highly pressurised liquid passage and the first low pressure liquid passage, the second reversing tube is provided with the third connecting hole of connection first low pressure liquid passage and the second low pressure liquid passage.
Further, the first radial communication pipe and the second radial communication pipe are two.
Further, in second housing, the first end place of corresponding second reversing tube is provided with adapter sleeve, the first cannelure is formed after adapter sleeve coordinates with the first end of the second reversing tube, form the second cannelure after second end of the second reversing tube coordinates with intervalve, in the first cannelure and the second cannelure, be provided with ball.
Further, the circumferential side wall of throttling arrangement matches with the inner circumferential sidewall of the second reversing tube, and is provided with sealing ring between throttling arrangement and the second reversing tube.
Further, side knock generating assembly also comprises the rotary hammer be arranged in the first housing, and rotary hammer makes rotary reciprocating motion along the axis of rotary hammer under the driving of the first reversing tube.
Further, the outside wall surface of rotary hammer is provided with symmetrically the first fan-shaped bump and the second fan-shaped bump, and the peripheral outer wall of the first fan-shaped bump and the second fan-shaped bump all fits with the inwall of the first housing, first fan-shaped bump both sides are circumferentially formed with the first side knock chamber and the second side knock chamber, and the second fan-shaped bump both sides are circumferentially formed with the 3rd side knock chamber and the 4th side knock chamber; The internal face of rotary hammer is provided with symmetrically the first arc bump and the second arc bump, and the peripheral outer wall of the first arc bump and the second arc bump all fits with the outer wall of the first reversing tube, first arc bump both sides are circumferentially formed with first and turn to dividing potential drop chamber and second to turn to dividing potential drop chamber, and the second arc bump both sides are circumferentially formed with the 3rd and turn to dividing potential drop chamber and the 4th to turn to dividing potential drop chamber.
Further, side knock generating assembly also comprises feed liquor portion and fluid portion, feed liquor portion and the first low pressure liquid channel connection, first side knock chamber is communicated with feed liquor portion or fluid portion with the 4th side knock chamber simultaneously, second side knock chamber is communicated with feed liquor portion or fluid portion with the 3rd side knock chamber simultaneously, when first side knock chamber is communicated with feed liquor portion with in the second side knock chamber, the first side knock chamber is communicated with fluid portion with another in the second side knock chamber; First turns to dividing potential drop chamber and the 4th to turn to dividing potential drop chamber to be communicated with feed liquor portion or fluid portion simultaneously, second turns to dividing potential drop chamber and the 3rd to turn to dividing potential drop chamber to be communicated with feed liquor portion or fluid portion simultaneously, first when turning to dividing potential drop chamber and second to turn in dividing potential drop chamber one to be communicated with feed liquor portion, first turn to dividing potential drop chamber and second to turn in dividing potential drop chamber another be communicated with fluid portion.
Apply technical scheme of the present invention, drilling well percussion mechanism comprises drill bit installation portion, side knock generating assembly and impact of collision generating assembly.Above-mentioned drilling well percussion mechanism works under the driving of cleaner for high-pressure drilling fluid.When side knock generating assembly works, the first reversing tube in the first housing rotates, and side knock generating assembly produces the cross torsion impact force of certain frequency.Now, start working in the driving section in impact of collision generating assembly under the driving of the first reversing tube, thus drive impact of collision portion to make axially reciprocating, produces the axial impact force of certain frequency.Above-mentioned drilling well percussion mechanism not only produces the cross torsion impact force of certain frequency to drill bit but also produces the axial impact force of certain frequency, form effect that a kind of three-dimensional motion impacts, thus drill bit can be assisted to break rock, improve drill bit rock breaking capacity, improve bit speed and drilling efficiency, effectively can solve sticky, sliding, the bit freezing problem of drill bit simultaneously, extend drilling life of bit.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment according to drilling well percussion mechanism of the present invention;
Fig. 2 shows the second reversing tube of the embodiment of the drilling well percussion mechanism of Fig. 1 and the structural representation of intervalve;
Fig. 3 shows second reversing tube of Fig. 2 and the A-A of intervalve when the first cooperation position to cross-sectional schematic;
Fig. 4 shows second reversing tube of Fig. 2 and the A-A of intervalve when the second cooperation position to cross-sectional schematic;
Fig. 5 shows the B-B of the side knock generating assembly of the drilling well percussion mechanism of Fig. 1 to cross-sectional schematic;
Fig. 6 shows the first operating position schematic diagram of the side knock generating assembly of Fig. 5;
Fig. 7 shows the second operating position schematic diagram of the side knock generating assembly of Fig. 5;
Fig. 8 shows the 3rd operating position schematic diagram of the side knock generating assembly of Fig. 5;
Fig. 9 shows the 4th operating position schematic diagram of the side knock generating assembly of Fig. 5; And
Figure 10 shows the 5th operating position schematic diagram of the side knock generating assembly of Fig. 5.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
1, drill bit installation portion; 2, lower cover; 4, rotary hammer; 5, the first reversing tube; 6, the first housing; 7, upper cover; 8, ball; 9, adapter sleeve; 10, throttling arrangement; 11, the first locating piece; 12, the second housing; 121, the first actuator chamber; 122, the second actuator chamber; 13, jump bit; 14, the second reversing tube; 141, the first radial communication pipe; 142, the second radial communication pipe; 143, third connecting hole; 144, highly pressurised liquid passage; 15, intervalve; 151, the first intercommunicating pore; 152, the second intercommunicating pore; 153, the second low pressure liquid passage; 17, the second locating piece; 19, nozzle; 21, apocenosis passage; 22, sealing ring; 41, the first fan-shaped bump; 411, first enters discharge opeing through hole; 42, the second fan-shaped bump; 421, second enters discharge opeing through hole; 43, the first arc bump; 431, the 3rd enters discharge opeing through hole; 44, the second arc bump; 441, the 4th enters discharge opeing through hole; 51, first dividing potential drop chamber is turned to; 52, second dividing potential drop chamber is turned to; 53, the 3rd dividing potential drop chamber is turned to; 54, the 4th dividing potential drop chamber is turned to; 55, the first low pressure liquid passage; 56, discharge launder; 57, liquid inlet channel; 61, the first side knock chamber; 62, the second side knock chamber; 63, the 3rd side knock chamber; 64, the 4th side knock chamber; 65, sump pit is entered; 651, lead channel; 652, sump pit.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the drilling well percussion mechanism of the present embodiment comprises drill bit installation portion 1, side knock generating assembly and impact of collision generating assembly.Wherein, side knock generating assembly comprises the first housing 6 and rotating the first reversing tube 5 be arranged in the first housing 6.Impact of collision generating assembly comprises the second housing 12 and the impact of collision portion be arranged in the second housing 12 and driving section, and driving section drives impact of collision portion to make axially reciprocating under the driving of the first reversing tube 5.The drilling well percussion mechanism of application the present embodiment, drilling well percussion mechanism comprises drill bit installation portion 1, side knock generating assembly and impact of collision generating assembly.Above-mentioned drilling well percussion mechanism works under the driving of cleaner for high-pressure drilling fluid.When side knock generating assembly works, the first reversing tube 5 in the first housing 6 rotates, and side knock generating assembly produces the cross torsion impact force of certain frequency.Now, start working in the driving section in impact of collision generating assembly under the driving of the first reversing tube 5, thus drive impact of collision portion to make axially reciprocating, produces the axial impact force of certain frequency.Above-mentioned drilling well percussion mechanism not only produces the cross torsion impact force of certain frequency to drill bit but also produces the axial impact force of certain frequency, form effect that a kind of three-dimensional motion impacts, thus drill bit can be assisted to break rock, improve drill bit rock breaking capacity, improve bit speed and drilling efficiency, effectively can solve sticky, sliding, the bit freezing problem of drill bit simultaneously, extend drilling life of bit.
In the present embodiment, side knock generating assembly is arranged on one end of drill bit installation portion 1, and impact of collision generating assembly is arranged on one end away from drill bit installation portion 1 of side knock generating assembly.
In the present embodiment, the two ends vertically in impact of collision portion are formed with the first actuator chamber 121 and the second actuator chamber 122, the inside of the first reversing tube 5 is provided with the first low pressure liquid passage 55, inside, driving section is provided with the highly pressurised liquid passage 144 and the second low pressure liquid passage 153 that are communicated with the first low pressure liquid passage 55, when first actuator chamber 121 is communicated with the second low pressure liquid passage 153 with in the second actuator chamber 122, the first actuator chamber 121 is communicated with highly pressurised liquid passage 144 with another in the second actuator chamber 122.
In the present embodiment, driving section comprises intervalve 15 and the second reversing tube 14, intervalve 15 is fixedly connected in the second housing 12, impact of collision portion is arranged between intervalve 15 and the inwall of the second housing 12, first actuator chamber 121 and the second actuator chamber 122 are arranged between intervalve 15 and the inwall of the second housing 12, second reversing tube 14 to be arranged in intervalve 15 and to be connected and synchronous axial system with the first reversing tube 5, formed in second reversing tube 14 between highly pressurised liquid passage 144, second reversing tube 14 and intervalve 15 and form the second low pressure liquid passage 153.
Intervalve 15 is provided with first intercommunicating pore 151 corresponding with the first actuator chamber 121 position and second intercommunicating pore 152 corresponding with the second actuator chamber 122 position, first intercommunicating pore 151 and the second intercommunicating pore 152 are arranged in the circumferential misalignment along intervalve 15, the end second reversing tube 14 being provided with the first radial communication pipe 141 coordinated with the first intercommunicating pore 151 and the second radial communication pipe 142, the first radial communication pipe 141 coordinated with the second intercommunicating pore 152 and the second radial communication pipe 142 all fits with the inwall of intervalve 15.
In the present embodiment, impact of collision portion comprises the jump bit 13 be set on intervalve 15, jump bit 13 can moving axially along intervalve 15, and impact of collision portion also comprises the first locating piece 11 be arranged in the first actuator chamber 121 and the second locating piece 17 be arranged in the second actuator chamber 122.
In the present embodiment, driving section also comprises throttling arrangement 10, throttling arrangement 10 is positioned at the second reversing tube 14 one end near the first reversing tube 5, and throttling arrangement 10 is communicated with the third connecting hole 143 highly pressurised liquid passage 144 and the first low pressure liquid passage 55, second reversing tube 14 being provided with connection first low pressure liquid passage 55 and the second low pressure liquid passage 153.
In the present embodiment, the first radial communication pipe 141 and the second radial communication pipe 142 are two.
In the present embodiment, in second housing 12, the first end place of corresponding second reversing tube 14 is provided with adapter sleeve 9, the first cannelure is formed after adapter sleeve 9 coordinates with the first end of the second reversing tube 14, second end of the second reversing tube 14 coordinates rear formation second cannelure with intervalve 15, be provided with ball 8 in the first cannelure and the second cannelure.
In the present embodiment, the circumferential side wall of throttling arrangement 10 matches with the inner circumferential sidewall of the second reversing tube 14, and is provided with sealing ring 22 between throttling arrangement 10 and the second reversing tube 14.
In the present embodiment, side knock generating assembly also comprises the rotary hammer 4 be arranged in the first housing 6, and rotary hammer 4 makes rotary reciprocating motion along the axis of rotary hammer 4 under the driving of the first reversing tube 5.
In the present embodiment, the outside wall surface of rotary hammer 4 is provided with symmetrically the first fan-shaped bump 41 and the second fan-shaped bump 42, and the peripheral outer wall of the first fan-shaped bump 41 and the second fan-shaped bump 42 all fits with the inwall of the first housing 6, first fan-shaped bump 41 both sides are circumferentially formed with the first side knock chamber 61 and the second fan-shaped bump 42 both sides circumferentially, side knock chamber 62, second are formed with the 3rd side knock chamber 63 and the 4th side knock chamber 64.
The internal face of rotary hammer 4 is provided with symmetrically the first arc bump 43 and the second arc bump 44, and the peripheral outer wall of the first arc bump 43 and the second arc bump 44 all fits with the outer wall of the first reversing tube 5, first arc bump 43 both sides are circumferentially formed with first and turn to dividing potential drop chamber 51 and second to turn to arc bump 44 both sides circumferentially, dividing potential drop chamber 52, second to be formed with the 3rd to turn to dividing potential drop chamber 53 and the 4th to turn to dividing potential drop chamber 54.
In the present embodiment, side knock generating assembly also comprises feed liquor portion and fluid portion, feed liquor portion is communicated with the first low pressure liquid passage 55, first side knock chamber 61 is communicated with feed liquor portion or fluid portion with the 4th side knock chamber 64 simultaneously, second side knock chamber 62 is communicated with feed liquor portion or fluid portion with the 3rd side knock chamber 63 simultaneously, when first side knock chamber 61 is communicated with feed liquor portion with in the second side knock chamber 62, the first side knock chamber 61 is communicated with fluid portion with another in the second side knock chamber 62.
First turns to dividing potential drop chamber 51 and the 4th to turn to dividing potential drop chamber 54 to be communicated with feed liquor portion or fluid portion simultaneously, second turns to dividing potential drop chamber 52 and the 3rd to turn to dividing potential drop chamber 53 to be communicated with feed liquor portion or fluid portion simultaneously, first when turning to dividing potential drop chamber 51 and second to turn in dividing potential drop chamber 52 one to be communicated with feed liquor portion, first turn to dividing potential drop chamber 51 and second to turn in dividing potential drop chamber 52 another be communicated with fluid portion.
In the present embodiment, drilling well percussion mechanism comprises drill bit installation portion 1, side knock generating assembly and impact of collision generating assembly.Above-mentioned drilling well percussion mechanism utilizes cleaner for high-pressure drilling fluid for power, the rotary hammer 4 in drilling well percussion mechanism is driven to make rotary reciprocating motion in the first housing 6, thus produce the cross torsion impact force of certain frequency, simultaneously, drive the jump bit 13 in drilling well percussion mechanism to make axially reciprocating in the second housing 12, thus produce the axial impact force of certain frequency.Highly pressurised liquid becomes low pressure liquid through the throttling dividing potential drop of throttling arrangement 10.Wherein, part low pressure liquid directly arrives drill bit installation portion 1 through the first low pressure liquid passage 55 and nozzle 19 and directly acts on drill bit, part low pressure liquid enters into side knock generating assembly, and some low pressure liquid enters into impact of collision generating assembly.
Below in conjunction with accompanying drawing, the structure of side knock generating assembly and impact of collision generating assembly and the course of work are described in detail.
1, the structure of side knock generating assembly and the course of work specific as follows:
As shown in Figure 1, side knock generating assembly comprise the first housing 6, the rotary hammer 4 be arranged on the axle central through hole of the first housing 6, the first reversing tube 5 be arranged on the axle central through hole of rotary hammer 4, the upper cover 7 being arranged on the first reversing tube 5 upper end, the lower cover 2 being arranged on the first reversing tube 5 lower end and the nozzle 19 be arranged in lower cover 2.Wherein, the first housing 6, be rotatable cooperation between rotary hammer 4 and the first reversing tube 5.
As shown in Figure 5, the outside wall surface of rotary hammer 4 is provided with symmetrically the first fan-shaped bump 41 and the second fan-shaped bump 42, and the peripheral outer wall of the first fan-shaped bump 41 and the second fan-shaped bump 42 all fits with the inwall of the first housing 6.First fan-shaped bump 41 both sides are circumferentially formed with the first side knock chamber 61 and the second fan-shaped bump 42 both sides circumferentially, side knock chamber 62, second are formed with the 3rd side knock chamber 63 and the 4th side knock chamber 64.
On the inwall of the first housing 6 between the first side knock chamber 61 and the 3rd side knock chamber 63 and be provided with two groups symmetrically between the second side knock chamber 62 and the 4th side knock chamber 64 and enter sump pit 65, often group is entered sump pit 65 and is included two lead channel 651 and the sump pit between two lead channel 651 652.Upper cover 7 is provided with the hole through with lead channel 651, lower cover 2 is provided with the hole through with sump pit 652.The both sides that rotary hammer 4 is positioned at the first fan-shaped bump 41 are provided with first and enter discharge opeing through hole 411, and the both sides that rotary hammer 4 is positioned at the second fan-shaped bump 42 are provided with second and enter discharge opeing through hole 421.
As shown in Figure 5, the internal face of rotary hammer 4 is provided with symmetrically the first arc bump 43 and the second arc bump 44, and the peripheral outer wall of the first arc bump 43 and the second arc bump 44 all fits with the outer wall of the first reversing tube 5, first arc bump 43 both sides are circumferentially formed with first and turn to dividing potential drop chamber 51 and second to turn to arc bump 44 both sides circumferentially, dividing potential drop chamber 52, second to be formed with the 3rd to turn to dividing potential drop chamber 53 and the 4th to turn to dividing potential drop chamber 54.
First turns to dividing potential drop chamber 51 and second to turn to the both sides in dividing potential drop chamber 52 and the 3rd to turn to dividing potential drop chamber 53 and the 4th to turn to the both sides in dividing potential drop chamber 54 to be provided with discharge launder 56, first turns to dividing potential drop chamber 51 and the 3rd to turn between dividing potential drop chamber 53 and second turns to dividing potential drop chamber 52 and the 4th to turn to be provided with two liquid inlet channels, 57, two liquid inlet channels 57 symmetrically between dividing potential drop chamber 54 and be all communicated with the first low pressure liquid passage 55 in the first reversing tube 5.The both sides that rotary hammer 4 is positioned at the first arc bump 43 are provided with the 3rd and enter discharge opeing through hole 431, and the both sides that rotary hammer 4 is positioned at the second arc bump 44 are provided with the 4th and enter discharge opeing through hole 441.
In said structure, first turns to dividing potential drop chamber 51, second to turn to dividing potential drop chamber 52, the 3rd to turn to dividing potential drop chamber 53, the 4th to turn to dividing potential drop chamber 54 and discharge launder 56 all arrange along the axis of the first reversing tube 5 and extend to the two ends of the first reversing tube 5.In addition, lower cover 2 is symmetrically arranged with two apocenosis passages 21, each apocenosis passage 21 is selectively communicated with the liquid inlet channel 57 of the first reversing tube 5 with the discharge launder 56 of liquid inlet channel 57 both sides or is not communicated with.
When side knock generating assembly works, the 3rd of the first arc bump 43 both sides of rotary hammer 4 are entered the 4th of discharge opeing through hole 431 and the second arc bump 44 both sides and are entered discharge opeing through hole 441 enters sump pit 65 respectively lead channel 651 and sump pit 652 alternate communication with one group of the first housing 6.First of first fan-shaped bump 41 both sides of rotary hammer 4 are entered second of discharge opeing through hole 411 and the second fan-shaped bump 42 both sides and are entered the liquid inlet channel 57 of discharge opeing through hole 421 and the first reversing tube 5 and discharge launder 56 alternate communication of liquid inlet channel 57 both sides.
Particularly, as shown in Figure 6, first turns to dividing potential drop chamber 51 to be communicated with lead channel 651, and second turns to dividing potential drop chamber 52 to be communicated with sump pit 652.The water conservancy diversion through hole of liquid through the first reversing tube 5 end enters into the chamber above upper cover 7, owing to upper cover 7 being provided with the hole through with lead channel 651, highly pressurised liquid enters into first by lead channel 651 and turns to dividing potential drop chamber 51, and promotes the first reversing tube 5 and rotate clockwise.
As shown in Figure 7, when the first arc bump 43 of rotary hammer 4 encounter second turn to the sidewall in dividing potential drop chamber 52 time, on the liquid inlet channel 57 of the first reversing tube 5 and rotary hammer 4 first enters discharge opeing through hole 411 and second, and to enter discharge opeing through hole 421 corresponding, first side knock chamber 61 is communicated with liquid inlet channel 57 with the 4th side knock chamber 64, second side knock chamber 62 and the 3rd side knock chamber 63 and discharge launder 56, apocenosis passage 21 is communicated with, liquid can through the first low pressure liquid passage 55 of the first reversing tube 5, liquid inlet channel 57, first enters discharge opeing through hole 411 and second enters discharge opeing through hole 421 and enters in the first side knock chamber 61 and the 4th side knock chamber 64, rotary hammer 4 is rotated counterclockwise, and drive the first reversing tube 5 to rotate counterclockwise.
As shown in Figure 8, stop operating after the first fan-shaped bump 41 of rotary hammer 4 encounters the sidewall in the second side knock chamber 62, lead channel 651 is entered discharge opeing through hole 431 and second by the 3rd and is turned to dividing potential drop chamber 52 to be communicated with feed liquor, first turns to dividing potential drop chamber 51 to be communicated with discharge opeing with sump pit 652, and the first reversing tube 5 rotates counterclockwise.
As shown in Figure 9, when the first arc bump 43 of rotary hammer 4 encounter first turn to the sidewall in dividing potential drop chamber 51 time, on the liquid inlet channel 57 of the first reversing tube 5 and rotary hammer 4 first enters discharge opeing through hole 411 and second, and to enter discharge opeing through hole 421 corresponding, second side knock chamber 62 is communicated with liquid inlet channel 57 with the 3rd side knock chamber 63, first side knock chamber 61 and the 4th side knock chamber 64 and discharge launder 56, apocenosis passage 21 is communicated with, liquid can through the first low pressure liquid passage 55 of the first reversing tube 5, liquid inlet channel 57, first enters discharge opeing through hole 411 and second enters discharge opeing through hole 421 and enters in the second side knock chamber 62 and the 3rd side knock chamber 63, rotary hammer 4 is rotated clockwise, and drive the first reversing tube 5 to rotate clockwise.
As shown in Figure 10, stop operating after the first fan-shaped bump 41 of rotary hammer 4 encounters the sidewall in the first side knock chamber 61.Action and so forth, produces the lateral impact forces of certain frequency.
2, the structure of impact of collision generating assembly and the course of work specific as follows:
As depicted in figs. 1 and 2, impact of collision generating assembly comprise the second housing 12 and be arranged on the jump bit 13 on the axle central through hole of the second housing 12, the intervalve 15 be arranged on the axle central through hole of jump bit 13, be arranged on intervalve 15 axle central through hole on the second reversing tube 14 and be arranged on the throttling arrangement 10 of the second reversing tube 14 lower end.Wherein, intervalve 15 is fixedly connected with the second housing 12, and jump bit 13 and the second housing 12 rotatably coordinate, and the second reversing tube 14 rotatably coordinates with intervalve 15.
As shown in Figures 1 to 4, the first actuator chamber 121 and the second actuator chamber 122 is formed between jump bit 13 two ends vertically and the second housing 12, the inside of the first reversing tube 5 is provided with between the first low pressure liquid passage 55, second reversing tube 14 and intervalve 15 and forms the second low pressure liquid passage 153.
Intervalve 15 is provided with first intercommunicating pore 151 corresponding with the first actuator chamber 121 position and second intercommunicating pore 152 corresponding with the second actuator chamber 122 position, first intercommunicating pore 151 and the second intercommunicating pore 152 are arranged in the circumferential misalignment along intervalve 15, the end second reversing tube 14 being provided with the first radial communication pipe 141 coordinated with the first intercommunicating pore 151 and the second radial communication pipe 142, the first radial communication pipe 141 coordinated with the second intercommunicating pore 152 and the second radial communication pipe 142 all fits with the inwall of intervalve 15.
Throttling arrangement 10 is positioned at the second reversing tube 14 one end near the first reversing tube 5, and throttling arrangement 10 is communicated with the third connecting hole 143 highly pressurised liquid passage 144 and the first low pressure liquid passage 55, second reversing tube 14 being provided with connection first low pressure liquid passage 55 and the second low pressure liquid passage 153.
When impact of collision generating assembly works, highly pressurised liquid becomes low pressure liquid through the throttling dividing potential drop of throttling arrangement 10, and is entered in the second low pressure liquid passage 153 by the third connecting hole 143 on the second reversing tube 14.Second reversing tube 14 rotates under the drive of the first reversing tube 5, thus pass through the cooperation of the second reversing tube 14 and intervalve 15, when first actuator chamber 121 is communicated with the second low pressure liquid passage 153 with in the second actuator chamber 122, the first actuator chamber 121 is communicated with highly pressurised liquid passage 144 with another in the second actuator chamber 122.
Particularly, as shown in Figures 1 to 4, the first intercommunicating pore 151 on intervalve 15 is all communicated with the second low pressure liquid passage 153 with the second intercommunicating pore 152, second low pressure liquid passage 153 is all communicated with the second actuator chamber 122 with the first actuator chamber 121, and low pressure liquid enters in the first actuator chamber 121 and the second actuator chamber 122.
As shown in Figures 1 to 4, when the second reversing tube 14 turns an angle, first intercommunicating pore 151 is communicated with the first radial communication pipe 141, thus highly pressurised liquid passage 144 is communicated with the first actuator chamber 121, highly pressurised liquid enters in the first actuator chamber 121 through highly pressurised liquid passage 144, first intercommunicating pore 151 and the first radial communication pipe 141.Now, be highly pressurised liquid in the first actuator chamber 121, be low pressure liquid in the second actuator chamber 122, therefore, jump bit 13 can be promoted to the lateral movement away from drill bit installation portion 1.
As shown in Figures 1 to 4, when the second reversing tube 14 turns an angle, second intercommunicating pore 152 is communicated with the second radial communication pipe 142, thus highly pressurised liquid passage 144 is communicated with the second actuator chamber 122, highly pressurised liquid enters in the second actuator chamber 122 through highly pressurised liquid passage 144, second intercommunicating pore 152 and the second radial communication pipe 142.Now, being highly pressurised liquid in the second actuator chamber 122, is low pressure liquid in the first actuator chamber 121, therefore, can promote jump bit 13 to the lateral movement near drill bit installation portion 1.Action and so forth, produces the longitudinal impact force of certain frequency.
From above description, can find out, the above embodiments of the present invention achieve following technique effect: when drilling well percussion mechanism works, drill bit is produced to cross torsion impact force and the axial impact force of certain frequency, form effect that a kind of three-dimensional motion impacts, thus drill bit can be assisted to break rock, improve drill bit rock breaking capacity, improve in, the bit speed of hard formation and drilling efficiency, sticky, sliding, the bit freezing problem of PDC drill bit can be solved simultaneously, that slows down down-hole equipment turns round shake, extends drilling life of bit.By known to the test of above-mentioned drilling well percussion mechanism in practical work process, use the drilling efficiency of this drilling well percussion mechanism to be Tong Jing, the 2-3 being used alone PDC drill bit with layer times, drilling efficiency obtains obvious lifting.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a drilling well percussion mechanism, is characterized in that, comprising:
Drill bit installation portion (1);
Side knock generating assembly, comprises the first housing (6) and rotating the first reversing tube (5) be arranged in described first housing (6);
Impact of collision generating assembly, the impact of collision portion comprising the second housing (12) and be arranged in described second housing (12) and driving section, described driving section drives described impact of collision portion to make axially reciprocating under the driving of described first reversing tube (5).
2. drilling well percussion mechanism according to claim 1, it is characterized in that, described side knock generating assembly is arranged on one end of described drill bit installation portion (1), and described impact of collision generating assembly is arranged on one end away from described drill bit installation portion (1) of described side knock generating assembly.
3. drilling well percussion mechanism according to claim 2, it is characterized in that, the two ends vertically in described impact of collision portion are formed with the first actuator chamber (121) and the second actuator chamber (122), the inside of described first reversing tube (5) is provided with the first low pressure liquid passage (55), inside, described driving section is provided with the highly pressurised liquid passage (144) and the second low pressure liquid passage (153) that are communicated with described first low pressure liquid passage (55), when described first actuator chamber (121) is communicated with described second low pressure liquid passage (153) with in the second actuator chamber (122), described first actuator chamber (121) is communicated with described highly pressurised liquid passage (144) with another in described second actuator chamber (122).
4. drilling well percussion mechanism according to claim 3, is characterized in that,
Described driving section comprises intervalve (15) and the second reversing tube (14), described intervalve (15) is fixedly connected in described second housing (12), described impact of collision portion is arranged between the inwall of described intervalve (15) and described second housing (12), described first actuator chamber (121) and described second actuator chamber (122) are arranged between the inwall of described intervalve (15) and described second housing (12), described second reversing tube (14) to be arranged in described intervalve (15) and to be connected and synchronous axial system with described first reversing tube (5), described highly pressurised liquid passage (144) is formed in described second reversing tube (14), described second low pressure liquid passage (153) is formed between described second reversing tube (14) and described intervalve (15),
Described intervalve (15) is provided with first intercommunicating pore (151) corresponding with described first actuator chamber (121) position and second intercommunicating pore (152) corresponding with described second actuator chamber (122) position, described first intercommunicating pore (151) is arranged with the circumferential misalignment of described second intercommunicating pore (152) along described intervalve (15), described second reversing tube (14) is provided with the first radial communication pipe (141) coordinated with described first intercommunicating pore (151) and the second radial communication pipe (142) coordinated with described second intercommunicating pore (152), the end of described first radial communication pipe (141) and described second radial communication pipe (142) all fits with the inwall of described intervalve (15).
5. drilling well percussion mechanism according to claim 4, it is characterized in that, described impact of collision portion comprises the jump bit (13) be set on described intervalve (15), described jump bit (13) can moving axially along described intervalve (15), and described impact of collision portion also comprises the first locating piece (11) be arranged in described first actuator chamber (121) and the second locating piece (17) be arranged in described second actuator chamber (122).
6. drilling well percussion mechanism according to claim 5, it is characterized in that, described driving section also comprises throttling arrangement (10), described throttling arrangement (10) is positioned at described second reversing tube (14) one end near described first reversing tube (5), and described throttling arrangement (10) is communicated with described highly pressurised liquid passage (144) and described first low pressure liquid passage (55), described second reversing tube (14) is provided with the third connecting hole (143) being communicated with described first low pressure liquid passage (55) and the second low pressure liquid passage (153).
7. drilling well percussion mechanism according to claim 4, is characterized in that, described first radial communication pipe (141) and described second radial communication pipe (142) are two.
8. drilling well percussion mechanism according to claim 4, it is characterized in that, in described second housing (12), the first end place of corresponding described second reversing tube (14) is provided with adapter sleeve (9), the first cannelure is formed after described adapter sleeve (9) coordinates with the first end of described second reversing tube (14), form the second cannelure after second end of described second reversing tube (14) coordinates with described intervalve (15), in described first cannelure and described second cannelure, be provided with ball (8).
9. drilling well percussion mechanism according to claim 6, it is characterized in that, the circumferential side wall of described throttling arrangement (10) matches with the inner circumferential sidewall of described second reversing tube (14), and is provided with sealing ring (22) between described throttling arrangement (10) and described second reversing tube (14).
10. drilling well percussion mechanism according to claim 3, it is characterized in that, described side knock generating assembly also comprises the rotary hammer (4) be arranged in described first housing (6), and described rotary hammer (4) makes rotary reciprocating motion along the axis of described rotary hammer (4) under the driving of described first reversing tube (5).
11. drilling well percussion mechanisms according to claim 10, is characterized in that,
The outside wall surface of described rotary hammer (4) is provided with symmetrically the first fan-shaped bump (41) and the second fan-shaped bump (42), and the peripheral outer wall of described first fan-shaped bump (41) and described second fan-shaped bump (42) all fits with the inwall of described first housing (6), described first fan-shaped bump (41) both sides are circumferentially formed with the first side knock chamber (61) and the second side knock chamber (62), described second fan-shaped bump (42) both sides are circumferentially formed with the 3rd side knock chamber (63) and the 4th side knock chamber (64),
The internal face of described rotary hammer (4) is provided with symmetrically the first arc bump (43) and the second arc bump (44), and the peripheral outer wall of described first arc bump (43) and described second arc bump (44) all fits with the outer wall of described first reversing tube (5), described first arc bump (43) both sides are circumferentially formed with first and turn to dividing potential drop chamber (51) and second to turn to dividing potential drop chamber (52), described second arc bump (44) both sides are circumferentially formed with the 3rd and turn to dividing potential drop chamber (53) and the 4th to turn to dividing potential drop chamber (54).
12. drilling well percussion mechanisms according to claim 11, is characterized in that,
Described side knock generating assembly also comprises feed liquor portion and fluid portion, described feed liquor portion is communicated with described first low pressure liquid passage (55), described first side knock chamber (61) is communicated with feed liquor portion or fluid portion with described 4th side knock chamber (64) simultaneously, described second side knock chamber (62) is communicated with feed liquor portion or fluid portion with described 3rd side knock chamber (63) simultaneously, when described first side knock chamber (61) is communicated with described feed liquor portion with in described second side knock chamber (62), described first side knock chamber (61) is communicated with described fluid portion with another in described second side knock chamber (62),
Described first turns to dividing potential drop chamber (51) and the described 4th to turn to dividing potential drop chamber (54) to be communicated with feed liquor portion or fluid portion simultaneously, described second turns to dividing potential drop chamber (52) and the described 3rd to turn to dividing potential drop chamber (53) to be communicated with feed liquor portion or fluid portion simultaneously, described first when turning to dividing potential drop chamber (51) and described second to turn to one in dividing potential drop chamber (52) to be communicated with described feed liquor portion, described first turn to dividing potential drop chamber (51) and described second to turn in dividing potential drop chamber (52) another be communicated with described fluid portion.
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| CN111255374A (en) * | 2020-02-21 | 2020-06-09 | 南通大学 | Anti-drill-sticking device and method for circumferential impact |
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Address after: Floor 14, floor No. 2, No. 6, South Street, Sun Palace, Beijing, Beijing Co-patentee after: Zhejiang Ruizhi Steel Industry Co., Ltd. Patentee after: CNOOC research institute limited liability company Address before: 100027 East Third Ring Road, Beijing, Chaoyang District No. 2 Co-patentee before: Zhejiang Ruizhi Steel Industry Co., Ltd. Patentee before: CNOOC Research Institute |