CN111305747A - Novel self-excited impact mechanism - Google Patents
Novel self-excited impact mechanism Download PDFInfo
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- CN111305747A CN111305747A CN201911004261.XA CN201911004261A CN111305747A CN 111305747 A CN111305747 A CN 111305747A CN 201911004261 A CN201911004261 A CN 201911004261A CN 111305747 A CN111305747 A CN 111305747A
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- liquid inlet
- hole
- reversing valve
- hollow shaft
- novel self
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
- E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a novel self-excitation type impact mechanism. The problem that the structure is complex due to the fact that rubber parts exist in the power mechanism of an existing screw drilling tool, overheating and aging occur, and a power system is needed to excite is mainly solved. The method is characterized in that: go up switching-over valve (1) middle part and be the hollow shaft, open one side of hollow shaft has oblique round hole I (a), and it has cross discharge orifice (b) to open on the outside disc of hollow shaft, the hollow shaft outside of going up switching-over valve (1) bottom has switching-over valve (2) and feed liquor dish (3) down in proper order to overlap, it has feed liquor hole I (c) and feed liquor hole II (d) unanimous with cross discharge orifice (b) shape to open on switching-over valve (2) down, and open the bottom of switching-over valve (2) down has shallow slot (e) of two symmetries, it has two symmetrical logical groove (g) unanimous with shallow slot (e) shape to open on feed liquor dish (3). This novel auto-excitation formula impact mechanism does not have the rubber spare, need not driving system and arouses, and the fragile piece is few, simplifies the instrument structure and shortens instrument length, increase of service life.
Description
Technical Field
The invention relates to the field of oil and gas field drilling, in particular to a novel self-excitation type impact mechanism.
Background
At present, the screw drill tool which is most widely applied to oil fields has the defects that parts are overheated and aged due to the fact that rubber parts exist in a power mechanism, so that the service life of the tool is shortened; other speed-up tools all need a power system to be excited, the number of parts and the total length in the tool are increased, indoor assembly and debugging are difficult, and the tool is difficult to run in a directional well and a horizontal well.
Disclosure of Invention
The invention provides a novel self-excitation type impact mechanism, aiming at overcoming the defects that rubber pieces exist in the power mechanism of the existing screw drilling tool, the rubber pieces are overheated and aged, and the structure is complicated due to the fact that a power system is required to excite, the novel self-excitation type impact mechanism is free of rubber pieces and excitation of the power system, few easily-damaged pieces are produced, the tool structure is simplified, the tool length is shortened, and the service life is prolonged.
The technical scheme of the invention is as follows: a novel self-excited impact mechanism comprises an upper reversing valve, wherein a hollow shaft is arranged in the middle of the upper reversing valve, a disc is arranged outside the hollow shaft, an inclined round hole I is formed in one side of the hollow shaft, an overflowing hole is formed in the disc, a lower reversing valve and a liquid inlet disc are sequentially sleeved outside the hollow shaft at the bottom of the upper reversing valve, a liquid inlet hole I and a liquid inlet hole II which are consistent with the shape of the overflowing hole are formed in the lower reversing valve, two symmetrical shallow grooves are formed in the bottom of the lower reversing valve, one shallow groove is located between the two liquid inlet holes, two symmetrical through grooves which are consistent with the shape of the shallow grooves are formed in the liquid inlet disc, and two symmetrical arc-shaped grooves are formed in two sides of;
the bottom of the liquid inlet disc is provided with an impact body, the left side and the right side of the impact body are arc-shaped blades, the blades are arranged in an arc-shaped groove of the liquid inlet disc, the center of the bottom of the impact body is provided with a central hole II, counter bores are respectively arranged above and below the central hole II, and one side of the counter bore at the upper part is provided with an inclined round hole II; the bottom of the impact body is provided with a base, a boss at the center of the upper part of the base is arranged in a counter bore at the bottom of the impact body, and the base is provided with a fan-shaped groove;
the base is externally sleeved with a jaw, the top of the jaw is clamped in the shallow groove, two groups of circular beads I and circular beads II which are symmetrically distributed are arranged on the periphery of the jaw, the height of the circular beads II is consistent with that of the center of the impact body, and the thickness of the circular beads I is consistent with that of the liquid inlet plate;
a pair of composite sheets are arranged in counter bores at the bottom of the impact body;
the overflowing hole is an elliptical hole, and the liquid inlet hole I and the liquid inlet hole II are elliptical holes with the shapes consistent with that of the overflowing hole;
the included angle between the long axes of the liquid inlet hole I and the liquid inlet hole II is 92.5 degrees;
the included angle between the central line of the inclined circular hole I and the inclined circular hole II and the axis of the upper reversing valve is 60 degrees;
the included angle between the two sides of the arc-shaped blade is 60 degrees;
the included angle between the two sides of the fan-shaped groove is 92.5 degrees.
The invention has the following beneficial effects: by adopting the scheme, the impact mechanism has no rubber part, does not need to be excited by a power system, and has reasonable spatial layout of parts, less easily-damaged parts and long service life of the system; the impact mechanism can be used independently, can also be used together with a power drilling tool, has no special requirements on field equipment, and can be used for a vertical well, a horizontal well and a directional well.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the upper reversing valve;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a front view of the lower reversing valve;
FIG. 5 is a cross-sectional view of the lower reversing valve;
FIG. 6 is a top view of the liquid inlet pan;
FIG. 7 is a front view of the impactor;
FIG. 8 is a top view of the impingement member;
FIG. 9 is a cross-sectional view taken along C-C of FIG. 7;
FIG. 10 is a front view of the jaw;
FIG. 11 is a top view of the jaw;
FIG. 12 is a front view of the base;
fig. 13 is a top view of the base.
In the figure, 1-an upper reversing valve, 2-a lower reversing valve, 3-a liquid inlet disc, 4-an impact body, 5-a jaw, 6-a composite sheet, 7-a base, a-an inclined circular hole I, b-an overflowing hole, c-a liquid inlet hole I, d-a liquid inlet hole II, e-a shallow groove, f-an arc groove, g-a symmetrical through groove, h-a blade, i-an inclined circular hole II, j-a shoulder I, k-a shoulder II, l-a counter bore, m-a fan-shaped groove, n-a center hole I, o-a center hole II.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1 to 13, the novel self-excited impact mechanism comprises an upper reversing valve 1, wherein the middle part of the upper reversing valve 1 is a hollow shaft, the top of the hollow shaft is not communicated, one side of the hollow shaft is provided with an inclined round hole Ia, and an included angle between the central line of the inclined round hole Ia and the axis of the upper reversing valve 1 is 60 degrees; the outer part of the hollow shaft is a disc, and the disc is provided with an overflowing hole b. The hollow shaft outside of going up switching-over valve 1 bottom overlaps in proper order has lower switching-over valve 2 and feed liquor dish 3, it has feed liquor hole IC and feed liquor hole IId unanimous with cross discharge orifice b shape to open on the switching-over valve 2 down, crosses discharge orifice b, feed liquor hole IC and feed liquor hole IId and all unanimous elliptical aperture of shape and direction, and the contained angle between feed liquor hole IC and the major axis of feed liquor hole IId is 92.5 simultaneously. The bottom of the lower reversing valve 2 is provided with two symmetrical shallow grooves e, and one of the shallow grooves e is positioned between the two liquid inlet holes. The liquid inlet plate 3 is provided with two symmetrical through grooves g which are consistent with the shallow grooves e in shape, and the positions of the symmetrical through grooves g correspond to the shallow grooves e; two symmetrical arc grooves f are formed in two sides of the symmetrical through groove g, the shape and the angle of the arc grooves f are determined according to the liquid inlet hole ic and the liquid inlet hole IId, and the arc grooves f are not smaller than the liquid passing holes.
The bottom of the liquid inlet disc 3 is provided with an impact body 4, the left side and the right side of the impact body 4 are arc-shaped blades h, the included angle between the two sides of each arc-shaped blade h is 60 degrees, the upper parts of the arc-shaped blades h protrude and are arranged in an arc-shaped groove f of the liquid inlet disc 3. Strike 4 bottom centers of body department and open there is centre bore II o, and centre bore II o is equipped with the counter bore from top to bottom respectively, and one side of upper portion counter bore is opened there is oblique round hole II i, and the contained angle is 60 between the central line of oblique round hole II i and the 1 axis of last switching-over valve, strike 4 bottoms of body and be equipped with base 7, and base 7 upper portions are equipped with the boss, and boss center department is equipped with the counter bore, and the boss is arranged in the counter bore of 4 bottoms of the body of strikeing, and like this, has put a pair of compound piece 6 between counter bore l of 4 bottoms of the body of strikeing and the counter bore on the base 7, and mutual. The base 7 is also provided with a fan-shaped groove m, and the included angle between two sides of the fan-shaped groove m is 92.5 degrees.
The base 7 is externally sleeved with a jaw 5, the top of the jaw 5 is clamped in a shallow groove e on the liquid inlet disc 2, two groups of circular shoulders Ij and circular shoulders Ik which are symmetrically distributed are arranged on the periphery of the jaw 5, the heights of the circular shoulders Ij and the center of the impact body 4 are consistent, and the thicknesses of the circular shoulders Ij and the liquid inlet disc 3 are consistent.
During assembly: the lower reversing valve 2 and the liquid inlet disc 3 are sequentially sleeved outside the hollow shaft of the upper reversing valve 1; the blade h of the impact body 4 passes through the arc-shaped groove f of the liquid inlet disc 3; the impact body 4 is matched with the base 7 through a pair of composite sheets 6; the shoulder II k on the jaw 5 passes through the symmetrical through groove g on the liquid inlet disc 3, and the upper end of the shoulder II k is arranged in the shallow groove e on the lower reversing valve 2.
In the drilling process of the oil-gas well, the upper reversing valve 1 is driven to rotate by a drilling fluid power mechanism. When the upper reversing valve 1 is provided with an overflowing holebWhen not coincident with feed liquor hole IC and feed liquor hole IId on the switching-over valve 2 down, drilling fluid passes through oblique round hole Ia through the hollow shaft, flows out by oblique round hole II i on the impact body 4, applys on the drill bit through sector groove m on the base 7.
When the overflowing hole b on the upper reversing valve 1 is superposed with the liquid inlet hole ic on the lower reversing valve 2, the overflowing channels b-c are opened, drilling fluid impacts the arc-shaped blade h of the impact body 4 through the channels, the impact body 4 is driven to rotate anticlockwise to generate high-frequency impact force, and the high-frequency impact force is applied to a drill bit through the fan-shaped groove m on the base 7. When the upper reversing valve 1 is provided with an overflowing holebWhen the liquid inlet hole II d of the lower reversing valve 2 is overlapped,flow passageb-dOpening, drilling fluid through the channel impacting the curved blade of the impact body 4hThe impact body 4 is driven to rotate clockwise to generate high-frequency impact force which is applied to the drill bit through the fan-shaped groove m on the base 7. The flow passage b-c and the flow passage b-d are periodically opened and closed to generate periodic pulses to drive the impact body 4 to reciprocate, and the hydraulic pulses are generated by changing the volume of the space at two sides of the blade of the impact body 4 and changing the fluid pressure difference at two sides.
The impact mechanism generates high-frequency axial pulses under the action of pressure difference to directly drive the reversing valve to rotate, high-frequency impact force is generated on two sides of the impact body 4 to drive the impact body 4 to reciprocate, the high-frequency impact force is transmitted to the drill bit through the pressure and torque transmission mechanism, and uniform and stable high-frequency vibration impact force is added to the circumferential direction of the drill bit to realize high-speed rock breaking. Under the combined action of the circumferential high-frequency impact and the axial hydraulic pulse, the drill bit and the well bottom always keep continuous high-frequency cutting, and the shearing efficiency is obviously improved.
Claims (7)
1. A novel self-excited impact mechanism comprises an upper reversing valve (1), and is characterized in that: the middle part of the upper reversing valve (1) is a hollow shaft, the outer part of the hollow shaft is a disc, one side of the hollow shaft is provided with an inclined round hole I (a), the disc is provided with an overflowing hole (b), the outer part of the hollow shaft at the bottom of the upper reversing valve (1) is sequentially sleeved with a lower reversing valve (2) and a liquid inlet disc (3), the lower reversing valve (2) is provided with a liquid inlet hole I (c) and a liquid inlet hole II (d) which are consistent with the shape of the overflowing hole (b), the bottom of the lower reversing valve (2) is provided with two symmetrical shallow grooves (e), one of the shallow grooves (e) is positioned between the two liquid inlet holes, the liquid inlet disc (3) is provided with two symmetrical through grooves (g) which are consistent with the shape of the shallow grooves (e), and two sides of the symmetrical through grooves (g) are provided with;
the liquid inlet disc (3) is provided with an impact body (4) at the bottom, the left side and the right side of the impact body (4) are arc-shaped blades (h), the blades (h) are arranged in an arc-shaped groove (f) of the liquid inlet disc (3), the center of the bottom of the impact body (4) is provided with a center hole II (o), the upper part and the lower part of the center hole II (o) are respectively provided with a counter bore, and one side of the counter bore at the upper part is provided with an inclined round hole II (i); a base (7) is arranged at the bottom of the impact body (4), a boss at the center of the upper part of the base (7) is arranged in a counter bore at the bottom of the impact body (4), and a fan-shaped groove (m) is formed in the base (7);
the base (7) is externally sleeved with a jaw (5), the top of the jaw (5) is clamped in a shallow groove (e), two groups of shoulders I (j) and II (k) which are symmetrically distributed are arranged on the periphery of the jaw (5), the heights of the shoulders II (k) and the center of the impact body (4) are consistent, and the thicknesses of the shoulders I (j) and the liquid inlet disc (3) are consistent.
2. A novel self-exciting impact mechanism according to claim 1, characterized in that: a pair of composite sheets (6) is arranged in a counter bore (l) at the bottom of the impact body (4).
3. A novel self-exciting impact mechanism according to claim 2, characterized in that: the overflowing hole (b) is an elliptical hole, and the liquid inlet hole I (c) and the liquid inlet hole II (d) are elliptical holes with the same shape as the overflowing hole (b).
4. A novel self-exciting impact mechanism according to claim 3, characterized in that: the included angle between the long axes of the liquid inlet holes I (c) and the liquid inlet holes II (d) is 92.5 degrees.
5. The novel self-exciting impact mechanism according to claim 4, characterized in that: the included angle between the central lines of the inclined circular holes I (a) and the inclined circular holes II (i) and the axis of the upper reversing valve (1) is 60 degrees.
6. The novel self-exciting impact mechanism of claim 5, wherein: the included angle between the two sides of the arc-shaped blade (h) is 60 degrees.
7. A novel self-exciting impact mechanism according to claim 6, characterized in that: the included angle between the two sides of the fan-shaped groove (m) is 92.5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911004261.XA CN111305747A (en) | 2019-10-22 | 2019-10-22 | Novel self-excited impact mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911004261.XA CN111305747A (en) | 2019-10-22 | 2019-10-22 | Novel self-excited impact mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111305747A true CN111305747A (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911004261.XA Withdrawn CN111305747A (en) | 2019-10-22 | 2019-10-22 | Novel self-excited impact mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111305747A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2656045A1 (en) * | 1989-12-14 | 1991-06-21 | Sp K Bjur | Hydraulic percussion apparatus |
| US20120279724A1 (en) * | 2009-11-10 | 2012-11-08 | National Oilwell Varco L.P. | Downhole tractor |
| CN205743711U (en) * | 2016-05-23 | 2016-11-30 | 宝鸡市远深石油设备新技术有限公司 | Surge and push away multiple shock oscillator |
| CN107676032A (en) * | 2017-09-05 | 2018-02-09 | 中国石油天然气集团公司 | Moushroom valve formula composite impact mechanism |
| CN109025827A (en) * | 2018-09-11 | 2018-12-18 | 中国石油集团长城钻探工程有限公司 | A kind of drilling speed fluid power torsional pulses impactor |
-
2019
- 2019-10-22 CN CN201911004261.XA patent/CN111305747A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2656045A1 (en) * | 1989-12-14 | 1991-06-21 | Sp K Bjur | Hydraulic percussion apparatus |
| US20120279724A1 (en) * | 2009-11-10 | 2012-11-08 | National Oilwell Varco L.P. | Downhole tractor |
| CN205743711U (en) * | 2016-05-23 | 2016-11-30 | 宝鸡市远深石油设备新技术有限公司 | Surge and push away multiple shock oscillator |
| CN107676032A (en) * | 2017-09-05 | 2018-02-09 | 中国石油天然气集团公司 | Moushroom valve formula composite impact mechanism |
| CN109025827A (en) * | 2018-09-11 | 2018-12-18 | 中国石油集团长城钻探工程有限公司 | A kind of drilling speed fluid power torsional pulses impactor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200619 |
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| WW01 | Invention patent application withdrawn after publication |