CN209942777U - Well drilling coring tool - Google Patents
Well drilling coring tool Download PDFInfo
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- CN209942777U CN209942777U CN201920630650.2U CN201920630650U CN209942777U CN 209942777 U CN209942777 U CN 209942777U CN 201920630650 U CN201920630650 U CN 201920630650U CN 209942777 U CN209942777 U CN 209942777U
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Abstract
The utility model discloses a well drilling coring tool, which comprises a shunt joint, a bearing, an inner cylinder and an outer cylinder, wherein the outer cylinder is connected with the bottom end of the shunt joint, the inner cylinder is sleeved in the outer cylinder, the shunt joint is provided with a central through hole and a lateral shunt through hole which is in conduction connection with the central through hole, and an annular space formed by the inner cylinder and the outer cylinder is in conduction connection with the lateral shunt through hole; the drilling and coring tool also comprises a mandrel, a nut and a bearing seat; the core shaft is sleeved in the outer barrel, and the bottom end of the core shaft is connected with the top end of the inner barrel; the mandrel and the shunt joint are rotatably connected through a bearing, the nut is in threaded connection with the top end of the mandrel, the top end of the limiting bearing is connected with the bearing seat, and the bottom end of the limiting bearing is connected with the shunt joint. The drilling fluid enters the annular space of the inner cylinder and the outer cylinder through the lateral shunt through holes to circulate, so that the corrosion and abrasion of the drilling fluid and the solid content to the bearing are reduced; the bearing is positioned in the space formed by the mandrel, the shunt joint, the nut and the bearing seat, so that the corrosion and abrasion of the drilling fluid and the solid content to the bearing are reduced.
Description
Technical Field
The utility model belongs to the technical field of oil, natural gas probing technique and specifically relates to a well drilling coring tool is related to.
Background
At present, bearings of a conventional drilling and coring tool at home and abroad are directly exposed in drilling fluid and are easily eroded by the drilling fluid, and the bearings are easily abraded and blocked due to the solid content in the drilling fluid. When carrying out the operation of coring, dismantle and assemble coring tool, the in-process of lifting and transferring can collide the bearing, leads to the bearing life-span very short. Almost all the time before coring, the bearing needs to be inspected, maintained or even replaced, the cost of the drilling coring tool is increased, and the labor intensity is increased.
Therefore, how to reduce the damage to the bearing of the drilling and coring tool during coring is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a well drilling and coring tool, which can reduce the damage to the bearing of the well drilling and coring tool during coring.
In order to achieve the above object, the present invention provides the following solutions:
a drilling coring tool comprises a shunt joint, a bearing, an inner cylinder and an outer cylinder, wherein the outer cylinder is connected with the bottom end of the shunt joint, the inner cylinder is sleeved in the outer cylinder, a central through hole and a lateral shunt through hole in conduction connection with the central through hole are formed in the shunt joint, and an annulus formed by the inner cylinder and the outer cylinder is in conduction connection with the lateral shunt through hole;
the drilling and coring tool further comprises a mandrel, a nut and a bearing seat;
the core shaft is sleeved in the outer cylinder, and the bottom end of the core shaft is connected with the top end of the inner cylinder;
the dabber with the reposition of redundant personnel connects through bearing rotatable coupling, the nut with the top threaded connection of dabber is spacing the top of bearing, the bearing frame with reposition of redundant personnel connects, and is spacing the bottom of bearing.
In a specific embodiment, a first step and a second step are disposed within the tap;
the nut and the mandrel are located at the first step, and the bearing is located at the second step.
In another specific embodiment, the well coring tool further comprises a ball seat and a pitch;
a first through hole is formed in the ball seat, a first end of the first through hole is in conduction connection with a second through hole formed in the mandrel, and a second end of the first through hole is in conduction connection with the central through hole;
the second through hole is in conductive connection with the inner hole of the inner barrel;
the pitching ball can be thrown to the top end of the ball seat and blocks the first end of the first through hole.
In another specific embodiment, the well coring tool further comprises spacer shims; the adjusting gasket is abutted against the inner ring of the first end of the bearing through the nut.
In another specific embodiment, the surface of the spacer is coated with a layer of elastomeric material.
In another specific embodiment, the elastomeric layer is a rubber layer.
In another specific embodiment, the well coring tool further comprises a stop washer;
the top of spacing gasket with the reposition of redundant personnel connects the butt, the bottom of spacing gasket with the outer lane butt of the first end of bearing.
In another specific embodiment, the borehole coring tool further comprises a difference sub;
the shunt joint is connected with the outer cylinder through the difference short section.
In another specific embodiment, the coring tool further comprises an adapter;
the inner cylinder is connected with the mandrel through the adapter.
In another specific embodiment, the clearance between the bearing seat and the bearing is 4mm to 6 mm; and/or
The inner cylinder is a smooth cylinder made of stainless steel or glass fiber reinforced plastic.
According to the utility model discloses an each embodiment can make up as required wantonly, and the embodiment that obtains after these combinations is also in the utility model discloses the scope is the utility model discloses a part of the concrete implementation mode.
In one embodiment of the utility model, when the drilling coring tool disclosed by the utility model is used, the drilling fluid enters the annular space of the inner cylinder and the outer cylinder for circulation through the central through hole and the lateral shunt through hole of the shunt joint, thereby reducing the corrosion and the abrasion of the drilling fluid and the solid content to the bearing; in addition, because the bearing is rotatably connected with the mandrel and the shunt joint, and the two ends of the bearing are respectively provided with the nut and the bearing seat, namely the bearing is positioned in a space formed by the mandrel, the shunt joint, the nut and the bearing seat, the corrosion and the abrasion of the drilling fluid and the solid content to the bearing are further reduced. And when the well drilling coring tool receives pulling force or pressure, pulling force or pressure transmit through the dabber, and in addition, the bearing is located the space that dabber, reposition of redundant personnel connect, nut and bearing frame are constituteed, has avoided lifting the in-process of transferring and has collided the bearing, and then has prolonged the life of bearing. Namely, the utility model discloses the damage that causes the bearing of well drilling coring tool when having reduced the coring.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without any novelty.
Fig. 1 is a schematic cross-sectional structural view of the drilling coring tool provided by the present invention.
Wherein, in fig. 1:
the device comprises a shunt joint 1, a bearing 2, an inner cylinder 3, an outer cylinder 4, a central through hole 101, a lateral shunt through hole 102, a mandrel 5, a nut 6, a bearing seat 7, a ball seat 8, a first through hole 801, a second through hole 501, an adjusting gasket 9, a limiting gasket 10, a difference short section 11 and a conversion joint 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without making novelty work belong to the protection scope of the present invention.
Example one
As shown in fig. 1, the present invention provides a well drilling coring tool. The drilling and coring tool comprises a flow dividing joint 1, a bearing 2, an inner cylinder 3, an outer cylinder 4, a mandrel 5, a nut 6 and a bearing seat 7.
The outer barrel 4 is connected with the bottom end of the shunt joint 1, and specifically, the outer barrel 4 is detachably connected with the bottom end of the shunt joint 1.
The inner cylinder 3 is sleeved in the outer cylinder 4, the shunt joint 1 is provided with a central through hole 101 and a lateral shunt through hole 102, the lateral shunt through hole 102 is in conduction connection with the central through hole 101, specifically, the lateral shunt through hole 102 is obliquely arranged with the central through hole 101, and an annular space formed by the inner cylinder 3 and the outer cylinder 4 is in conduction connection with the lateral shunt through hole 102, so that drilling fluid entering the shunt joint 1 can sequentially pass through the central through hole 101 and the lateral shunt through hole 102, and then enters the annular space formed by the inner cylinder 3 and the outer cylinder 4.
The mandrel 5 is sleeved in the outer barrel 4, and the bottom end of the mandrel 5 is connected with the top end of the inner barrel 3.
Dabber 5 and reposition of redundant personnel connect 1 and pass through bearing 2 rotatable coupling, nut 6 and the top threaded connection of dabber 5, spacing bearing 2's top, bearing frame 7 is connected with reposition of redundant personnel connect 1, specifically, bearing frame 7 and reposition of redundant personnel connect 1 threaded connection, and bearing frame 7 and reposition of redundant personnel connect 1 still need set up the screw and fasten, and bearing frame 7 is used for spacing bearing 2's bottom.
It should be noted that the bearing 2 includes a cylindrical roller bearing and/or a thrust bearing and/or other mechanisms having a bearing function. The nut 6 may have various shapes such as a cylindrical shape or a polygonal prism shape, and a screw thread connected to the spindle 5 is provided inside the nut 6.
When the drilling coring tool is used, drilling fluid enters the annular space of the inner cylinder 3 and the outer cylinder 4 for circulation through the central through hole 101 and the lateral shunt through holes 102 of the shunt joint 1, so that the corrosion and the abrasion of the drilling fluid and the solid content to the bearing 2 are reduced; in addition, because the bearing 2 can be rotatably connected with the mandrel 5 and the shunt joint 1, and the two ends of the bearing 2 are respectively provided with the nut 6 and the bearing seat 7, namely the bearing 2 is positioned in the space formed by the mandrel 5, the shunt joint 1, the nut 6 and the bearing seat 7, which is equal to the case that the bearing 2 is arranged in a box, the bearing is not directly subjected to the erosion of the drilling fluid and the abrasion of solid-phase particles to the bearing 2, the corrosion and the abrasion of the drilling fluid and the solid-phase content to the bearing 2 are further reduced, the phenomenon that the core is taken out every time and tools are assembled and disassembled is avoided, and the service life of the bearing 2. And when the well drilling coring tool receives pulling force or pressure, pulling force or pressure transmit through dabber 5, and in addition, bearing 2 is located the space that dabber 5, reposition of redundant personnel connect 1, nut 6 and bearing frame 7 are constituteed, has avoided lifting the in-process of transferring and has collided bearing 2, and then has prolonged bearing 2's life. Namely, the utility model discloses the damage that causes the bearing 2 of well drilling coring tool when having reduced the coring.
Example two
In the second embodiment, the structure of the drilling and coring tool in the first embodiment is similar to that of the drilling and coring tool in the second embodiment, and the same parts are not repeated and only the differences are introduced.
In this embodiment, the utility model discloses specifically disclose be provided with first step and second step in the reposition of redundant personnel connects 1. The nut 6 and the spindle 5 are located at the first step and the bearing 2 is located at the second step.
Further, the utility model discloses a well drilling coring tool still includes ball seat 8 and bowling. A first through hole 801 is formed in the ball seat 8, a first end of the first through hole 801 is in conduction connection with a second through hole 501 formed in the mandrel 5, and a second end of the first through hole 801 is in conduction connection with the central through hole 101. The second through hole 501 is connected to the inner hole of the inner barrel 3, and the ball can be thrown to the top end of the ball seat 8 and block the first end of the first through hole 801. When the drilling coring tool is used, a pitching ball is thrown to the top end of the ball seat 8, so that drilling fluid is prevented from entering the inner cylinder 3, and a rock core loaded in the inner cylinder 3 is protected from being washed out, extruded and deformed.
Further, the utility model discloses a well drilling coring tool still includes adjusting shim 9, and adjusting shim 9 circles through 6 butt of nut on the inner race of the first end of bearing 2. Specifically, a groove is formed in the mandrel 5, the adjusting gasket 9 is installed in the groove, and the adjusting gasket 9 is abutted to the inner ring of the bearing 2.
Further, the utility model discloses a surface coating elastomeric material layer of adjustment gasket 9, specifically, adjustment gasket 9 includes that a plurality of thickness are 3mm-10 mm's ring form gasket.
Further, the utility model discloses an elastic material layer is the rubber layer, and what need explain, elastic material layer can also be elastic material such as silica gel layer.
Further, the utility model discloses a well drilling coring tool still includes spacing gasket 10, the top of spacing gasket 10 and the second step butt of reposition of redundant personnel joint 1, the outer lane butt of the bottom of spacing gasket 10 and the first end of bearing 2.
Further, the utility model discloses a well drilling coring tool still includes difference nipple joint 11, connects through difference nipple joint 11 between shunt joint 1 and the urceolus 4. Specifically, difference nipple 11 is cylindricly, and difference nipple 11's inside is the cylindricality step form, and difference nipple 11's top and difference nipple 11's bottom are provided with the internal thread of being connected with reposition of redundant personnel joint 1 and urceolus 4 respectively, and specifically, the outside of reposition of redundant personnel joint 1's bottom is provided with the external screw thread, and the top of urceolus 4 is provided with the external screw thread. In order to facilitate the use of the drilling and coring tool, the maximum outer diameter of the differential nipple 11 is the same as the outer diameter of the shunt joint 1 and the outer diameter of the outer cylinder 4. The arrangement of the difference nipple 11 reduces the surface wear of the outer barrel 4.
Further, the utility model discloses a well drilling coring tool still includes crossover sub 12, is connected through crossover sub 12 between inner tube 3 and the dabber 5.
Specifically, the adapter 12 is cylindrical, the top end of the adapter 12 is provided with an internal thread connected with the mandrel 5, the bottom end of the adapter 12 is provided with an external thread connected with the inner cylinder 3, the inner cylinder 3 is cylindrical, and the top end of the inner cylinder 3 is provided with an internal thread connected with the external thread of the adapter 12.
Specifically, the utility model discloses a ball seat 8 is cylindricly, and ball seat 8's top is provided with the external screw thread of being connected with dabber 5. The outer cylinder 4 is cylindrical, the top end of the outer cylinder 4 is provided with an external thread connected with the difference nipple 11, and the bottom end of the outer cylinder 4 is provided with an external thread connected with the coring bit.
Further, the utility model discloses a clearance of bearing frame 7 and bearing 2 is 4mm-6mm, and inner tube 3 is the smooth barrel that stainless steel or glass steel made, is convenient for the installation of bearing 2.
It should be noted that the terms indicating the orientation, such as the setting of the direction of the top end, the bottom end, and the like, are all the setting of the direction when the coring tool is used, that is, the tap 1, the difference nipple 11, the outer cylinder 4, and the like are arranged in the order from top to bottom, and are not intended to have other specific meanings for convenience of description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A drilling and coring tool comprises a flow dividing joint (1), a bearing (2), an inner cylinder (3) and an outer cylinder (4), wherein the outer cylinder (4) is connected with the bottom end of the flow dividing joint (1), the inner cylinder (3) is sleeved in the outer cylinder (4), the drilling and coring tool is characterized in that a central through hole (101) and a lateral flow dividing through hole (102) which is in conduction connection with the central through hole (101) are formed in the flow dividing joint (1), and an annular space formed by the inner cylinder (3) and the outer cylinder (4) is in conduction connection with the lateral flow dividing through hole (102);
the drilling and coring tool further comprises a mandrel (5), a nut (6) and a bearing seat (7);
the mandrel (5) is sleeved in the outer cylinder (4), and the bottom end of the mandrel (5) is connected with the top end of the inner cylinder (3);
dabber (5) with reposition of redundant personnel connects (1) and passes through bearing (2) rotatable coupling, nut (6) with the top threaded connection of dabber (5), it is spacing the top of bearing (2), bearing frame (7) with reposition of redundant personnel connects (1) and is connected, and is spacing the bottom of bearing (2).
2. A drilling and coring tool according to claim 1, wherein a first step and a second step are provided within the flow diversion joint (1);
the nut (6) and the mandrel (5) are located at the first step, and the bearing (2) is located at the second step.
3. A coring tool as claimed in claim 1 further comprising a ball seat (8) and a pitch;
a first through hole (801) is formed in the ball seat (8), a first end of the first through hole (801) is in conduction connection with a second through hole (501) formed in the mandrel (5), and a second end of the first through hole (801) is in conduction connection with the central through hole (101);
the second through hole (501) is in conductive connection with an inner hole of the inner barrel (3);
the pitching ball can be thrown to the top end of the ball seat (8), and the first end of the first through hole (801) is blocked.
4. The well coring tool of claim 1, further comprising spacer shims (9);
the adjusting gasket (9) is abutted against an inner ring at the first end of the bearing (2) through the nut (6).
5. Well coring tool according to claim 4, wherein the surface of the spacer shim (9) is coated with a layer of elastomeric material.
6. The coring tool of claim 5, wherein the layer of elastomeric material is a rubber layer.
7. A drilling and coring tool as set forth in claim 1 further comprising a spacing washer (10);
the top of spacing gasket (10) with reposition of redundant personnel joint (1) butt, the bottom of spacing gasket (10) with the outer lane butt of the first end of bearing (2).
8. A well coring tool according to claim 1, further comprising a difference sub (11);
the shunt joint (1) is connected with the outer cylinder (4) through the difference short section (11).
9. The borehole coring tool of claim 1, further comprising an adapter (12);
the inner cylinder (3) is connected with the mandrel (5) through the adapter (12).
10. A well coring tool according to any of claims 1-9, wherein the bearing seat (7) is spaced from the bearing (2) by a gap of 4mm-6 mm; and/or
The inner cylinder (3) is a smooth cylinder made of stainless steel or glass fiber reinforced plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920630650.2U CN209942777U (en) | 2019-05-05 | 2019-05-05 | Well drilling coring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920630650.2U CN209942777U (en) | 2019-05-05 | 2019-05-05 | Well drilling coring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209942777U true CN209942777U (en) | 2020-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920630650.2U Active CN209942777U (en) | 2019-05-05 | 2019-05-05 | Well drilling coring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209942777U (en) |
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2019
- 2019-05-05 CN CN201920630650.2U patent/CN209942777U/en active Active
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