CN209990467U - Totally-enclosed core sampling device for coring in ocean complex stratum - Google Patents
Totally-enclosed core sampling device for coring in ocean complex stratum Download PDFInfo
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- CN209990467U CN209990467U CN201920291474.4U CN201920291474U CN209990467U CN 209990467 U CN209990467 U CN 209990467U CN 201920291474 U CN201920291474 U CN 201920291474U CN 209990467 U CN209990467 U CN 209990467U
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- China
- Prior art keywords
- claw
- seat
- coring
- spring
- lamella
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- 238000005070 sampling Methods 0.000 title claims abstract description 28
- 210000000078 claw Anatomy 0.000 claims abstract description 82
- 239000011435 rock Substances 0.000 claims abstract description 38
- 238000005553 drilling Methods 0.000 claims abstract description 33
- 241000446313 Lamella Species 0.000 claims abstract description 17
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000009918 complex formation Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Earth Drilling (AREA)
Abstract
The utility model provides a marine complicated stratum coring is with totally closed rock core sampling device, includes drilling tool outer tube, drilling tool inner tube and drill bit, and drilling tool outer union coupling drill bit, the upper portion of drilling tool inner tube coupling coring pipe joint, coring pipe joint sub-unit connection sampler, the sampler includes spring block seat, supporting seat, lamella claw and spring leaf, and the supporting seat is located the spring block seat, and spring block seat upper portion and coring pipe joint threaded connection are equipped with a supporting bench in the spring block seat, and the supporting seat is located the spring block seat, is supported by a supporting bench, the lamella claw sets up several, and the fixed spring leaf of each lamella claw outer wall, each lamella claw can open and shut relatively the supporting seat, and each lamella claw closed state constitutes the closed surface of bullet shape, and each lamella claw opens the state entirely and extrudees the spring leaf. The utility model discloses to the rock core sample requirement and the design of fluid stratum such as ocean shallow layer, silt, quicksand, can obtain the good effect of coring to "fluid" rock core, rock specimen, guarantee fluid stratum rock core rate of taking, improve the quality of getting core of fluid stratum greatly.
Description
Technical Field
The utility model relates to a totally closed rock core sampling device is used for coring of ocean complex stratum that is used for complicated stratum such as ocean shallow layer, silt, quicksand to use especially for rock core sampling device.
Background
With the expansion of the field of marine drilling, the requirement of the marine drilling technology on core sampling is higher and higher. In sea shallow layer and energy exploration well drilling, stratum which is difficult to ensure coring (sampling) quality due to silt, water sensitivity, silt and the like is often drilled. The formation conditions in the ocean are more complex and harsh, the sand is finer, and the core or rock sample often assumes a form approximating that of a "fluid". The conventional claw spring of the land sampling device has very limited coring effect on the rock core or the rock sample due to poor blocking effect. In addition, the existing core sampling device is influenced by structural design, and when a rock core or a rock sample passes through the claw spring, the spring claw of the claw spring causes great disturbance to the rock core or the rock sample in the using process, so that the sufficient quantity and qualified quality of the rock core required by drilling are difficult to obtain. In view of the above, there is a need to improve the structure of the existing sampling device to meet the sampling requirement of the fluid formation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can prevent effectively that the fluid rock specimen from running off, guaranteeing the totally closed rock core sampling device is used in ocean complex stratum coring of fluid stratum rock core rate of taking to the drawback of prior art.
The problem of the utility model is solved with following technical scheme:
the utility model provides a complicated stratum in ocean is cored with totally closed rock core sampling device, includes drilling tool outer tube, drilling tool inner tube, sampler and drill bit, and drilling tool outer union coupling drill bit, the upper portion of drilling tool inner tube coupling coring pipe joint, coring pipe joint sub-unit connection sampler, the sampler include spring block seat, supporting seat, claw and spring leaf, and the supporting seat is located the spring block seat, and spring block seat upper portion and coring pipe joint threaded connection are equipped with a supporting bench in the spring block seat, and the supporting seat is supported by a supporting bench, the claw sets up several, and the spring leaf is fixed to each claw outer wall, and each claw can open and shut relatively the supporting seat, and each claw closed state constitutes the closed curved surface of warhead shape, and each claw opens the state claw extrusion spring leaf entirely.
Above-mentioned ocean complex stratum coring is with totally closed core sampling device, each claw root is equipped with the claw collar, supporting seat up end distribution supporting seat collar, steel wire rotating shaft pass each claw collar and supporting seat collar and articulate each claw and supporting seat.
Above-mentioned ocean complex stratum coring is with totally closed rock core sampling device, the lamella claw is the metal material, and lamella claw side is equipped with the blade, and blade department is equipped with arch and recess, and the recess and the mutual joggle of arch of the adjacent lamella claw of each lamella claw closed state close.
Above-mentioned ocean complex formation coring is with totally closed core sampling device, each claw back is equipped with the straight flute, and the spring leaf is located the straight flute, and spring leaf and claw are through rivet connection.
Above-mentioned totally closed rock core sampling device is used in ocean complex formation coring, the drill bit inner wall is equipped with supports the step, supports the step and is the inclined plane step, it is equipped with outer ka tai to block the spring seat, and outer ka tai matches the laminating and supports the step.
According to the totally-enclosed core sampling device for coring in the ocean complex formation, the aperture of the supporting seat is matched with the aperture of the lower part of the spring block seat, and the aperture of the lower part of the spring block seat is not smaller than the aperture of the working end of the drill bit.
Above-mentioned totally closed rock core sampling device is used in ocean complex formation coring, the sampler still includes the support retaining ring, and the support retaining ring is located the spring block seat, and the upper and lower terminal surface of support retaining ring touches respectively and connects coring pipe head lower extreme face and supporting seat up end.
The utility model is designed aiming at the core sampling requirements of fluid strata such as ocean shallow layer, silt, quicksand and the like, and through the arrangement of the petal-type petals, when the core and the rock sample pass through, the petals are fully opened and close to the inner wall of the blocking spring seat, the inner diameter of the formed channel is equal to or larger than the outer diameter of the core, and the disturbance to the core and the rock sample is reduced as much as possible; when drilling is finished and the drill is lifted, the claws are closed, no gap exists between every two adjacent claws, the full sealing of the channel is realized, and sufficient rock cores and rock samples are obtained. Furthermore, the utility model discloses the drill bit water route adopts the side opening end to spout formula, blocks spring seat outer structure and adopts the design of coincide with drill bit inner structure, can avoid the flush fluid to the erosion of rock core furthest, has further guaranteed the coring quality. The utility model discloses can obtain the good coring effect to "fluid" rock core, rock specimen, guarantee class fluid stratum rock core rate of taking, improve the coring quality in fluid stratum greatly.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the structure of the sampler;
FIG. 3 is a schematic view of the sampler with the jaws closed;
FIG. 4 is a schematic view of the sampler with the jaws fully open;
FIG. 5 is a schematic view of the structure of the claws;
FIG. 6 is a rear view of FIG. 5;
fig. 7-9 are schematic views of the working process of the present invention.
The reference numbers in the figures are: 1. the core column drilling tool comprises a drilling tool outer tube, 2, a drilling tool inner tube, 3, a coring pipe joint, 4, a drill bit, 4-1, a supporting step, 5, a spring blocking seat, 6, a supporting retainer ring, 7, a spring piece, 8, a claw, 8-1, a groove, 8-2, a protrusion, 8-3, a flat groove, 8-4, a claw mounting ring, 9, a steel wire rotating shaft, 10, a supporting seat, 11, an outer clamping table, 12 and a core column.
Detailed Description
Referring to fig. 1, the utility model discloses a drilling tool outer tube 1, drilling tool inner tube 2, drill bit 4, coring pipe joint 3 and sampler. The lower part of the outer pipe of the drilling tool is connected with a drill bit, the inner pipe of the drilling tool is positioned in the outer pipe of the drilling tool, and the inner pipe of the drilling tool is connected with the upper part of the joint of the coring pipe.
Referring to fig. 2-4, the sampler comprises a spring block seat 5, a supporting seat 10, claw pieces 8, a supporting retainer ring 6 and a spring piece 7. The stop spring seat is of a hollow structure, the upper part of the stop spring seat is in threaded connection with the lower part of the coring pipe joint, a support table is arranged in the stop spring seat, the support seat is cylindrical, the support seat is positioned in the stop spring seat, and the bottom of the support seat is supported by the support table. The supporting retainer ring is positioned in the spring blocking seat, the upper end face and the lower end face of the supporting retainer ring are respectively in contact with the lower end face of the core taking pipe joint and the upper end face of the supporting seat, the supporting retainer ring is axially limited to the supporting seat, and the supporting seat is prevented from moving in the drilling process. The claw sets up 3-8, and each claw outer wall fixed spring leaf, each claw root is equipped with claw collar 8-4, and the supporting seat mounting ring is distributed to the supporting seat up end, and each claw is articulated with the supporting seat through each claw collar and supporting seat mounting ring to steel wire pivot 9. The structure enables the claws to be opened or closed relative to the support seat, and the closed state of the claws forms a closed curved surface in a bullet shape as shown in figure 3. Each full open state spring leaf of claw is pressed and is touched the inner wall that supports the retaining ring, and the claw is vertical state, and the aperture that the claw inner wall constitutes matches with the aperture of supporting seat, as shown in figure 4. Under the natural state that the spring leaf is not compressed, the free end of the spring leaf is turned up and forms an included angle a with the outer wall of the claw.
Referring to fig. 5 and 6, the claws 8 are made of metal, and cutting edges are arranged on the side edges of the claws to reduce the resistance of the claws to cutting the core in the closing process. In order to ensure the close contact between the adjacent claws in the closed state of the claws and avoid the leakage of the fluid core, the cutting edge of each claw is provided with a bulge 8-2 and a groove 8-1, and the grooves and the bulges of the adjacent claws in the closed state of each claw are joggled with each other. The back of each claw is provided with a flat groove 8-3, the spring pieces are positioned in the flat grooves and connected through rivets. The spring piece is lower than the top of the claw.
Referring to fig. 1, the inner wall of the drill bit is provided with a supporting step which is an inclined step, the spring blocking seat is provided with an outer clamping table 11, and the outer clamping table is matched and close to the supporting step. The structure enables flushing fluid to pass through the channel on the side surface of the drill bit instead of flowing through the annular gap inside the drill bit, so that the flushing fluid is prevented from eroding the rock core to the maximum extent, and the coring quality is further ensured. The aperture of the supporting seat is matched with the aperture of the lower part of the spring block seat, and the aperture of the lower part of the spring block seat is not smaller than the aperture of the working end of the drill bit. Therefore, when the claws are fully opened, the inner diameter of the channel formed by the sampler is equal to or larger than the outer diameter of the core, the disturbance to the core is reduced as much as possible, and the integrity of the core is ensured.
Referring to fig. 7-9, the working process of the present invention is as follows: when drilling, the formed core column 12 pushes the claws upwards along with the downward cutting of the rotary drill bit, and the claws open at a certain angle around the steel wire rotating shaft under the action of the pushing force, as shown in fig. 7; as the drilling progresses downwards, the claws are gradually opened, and the spring piece is forced to deform to store elastic potential energy until the claws cling to the inner wall of the supporting retainer ring, as shown in fig. 8; after the repeated drilling is finished, a rock core or a rock sample needs to be taken, when the drilling tool is lifted away from the bottom of the hole, the claw assembly has the inward closing trend under the action of the deformation spring piece, the rock core column moves relative to the inner tube of the drilling tool along with the lifting of the drilling tool, the relative movement enables the rock core column to further press the claws, the cutting edges on the claws can cut into and finally cut off the rock core column easily, and then the claws are completely closed as shown in fig. 9. The close closing state of the claws can effectively prevent the loss of the fluid rock sample, thereby ensuring the core sampling rate under the stratum.
Claims (7)
1. The utility model provides a marine complex stratum coring is with totally closed rock core sampling device, includes drilling tool outer tube (1), drilling tool inner tube (2), sampler and drill bit (4), drilling tool outer union coupling drill bit, the upper portion of drilling tool inner tube coupling coring pipe joint (3), coring pipe joint sub-unit connection sampler, its characterized in that: the sampler includes that block spring seat (5), supporting seat (10), lamella claw (8) and spring leaf (7), and the supporting seat is located block spring seat, blocks spring seat upper portion and coring pipe head threaded connection, is equipped with a supporting bench in the block spring seat, and the supporting seat is supported by a supporting bench, the lamella claw sets up several, and each lamella claw outer wall fixed spring leaf, each lamella claw can open and shut relatively the supporting seat, and each lamella claw closed condition constitutes the closed curved surface of warhead shape, and each lamella claw is the open condition lamella claw extrusion spring leaf entirely.
2. The totally enclosed core sampling device for marine complex formation coring as set forth in claim 1, wherein: the root of each claw is provided with a claw mounting ring (8-4), the upper end surface of the supporting seat is provided with a supporting seat mounting ring, and a steel wire rotating shaft (9) penetrates through each claw mounting ring and the supporting seat mounting ring to hinge each claw and the supporting seat.
3. The totally enclosed core sampling device for marine complex formation coring as set forth in claim 2, wherein: the claws are made of metal, cutting edges are arranged on the side edges of the claws, protrusions (8-2) and grooves (8-1) are arranged at the cutting edges, and the grooves and the protrusions of the adjacent claws are mutually joggled in a closed state of each claw.
4. The totally enclosed core sampling device for marine complex formation coring as set forth in claim 3, wherein: the back of each claw is provided with a flat groove (8-3), the spring piece is positioned in the flat groove, and the spring piece is connected with the claws through rivets.
5. The totally enclosed core sampling device for marine complex formation coring as set forth in claim 4, wherein: the inner wall of the drill bit is provided with a supporting step which is an inclined step, the spring blocking seat is provided with an outer clamping table (11), and the outer clamping table is matched and attached to the supporting step.
6. The totally enclosed core sampling device for marine complex formation coring as set forth in claim 5, wherein: the aperture of the supporting seat is matched with the aperture of the lower part of the spring block seat, and the aperture of the lower part of the spring block seat is not smaller than the aperture of the working end of the drill bit.
7. The totally enclosed core sampling device for marine complex formation coring as set forth in claim 6, wherein: the sampler still includes supporting retainer ring (6), and supporting retainer ring is located the spring block seat, and the upper and lower terminal surface of supporting retainer ring touches core taking pipe joint lower extreme face and supporting seat up end respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291474.4U CN209990467U (en) | 2019-03-07 | 2019-03-07 | Totally-enclosed core sampling device for coring in ocean complex stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291474.4U CN209990467U (en) | 2019-03-07 | 2019-03-07 | Totally-enclosed core sampling device for coring in ocean complex stratum |
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| Publication Number | Publication Date |
|---|---|
| CN209990467U true CN209990467U (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920291474.4U Expired - Fee Related CN209990467U (en) | 2019-03-07 | 2019-03-07 | Totally-enclosed core sampling device for coring in ocean complex stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209990467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779553A (en) * | 2019-03-07 | 2019-05-21 | 中国地质科学院勘探技术研究所 | A kind of totally-enclosed boring sample device |
-
2019
- 2019-03-07 CN CN201920291474.4U patent/CN209990467U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779553A (en) * | 2019-03-07 | 2019-05-21 | 中国地质科学院勘探技术研究所 | A kind of totally-enclosed boring sample device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200124 |