CN215213342U - Rope coring and reaming drilling tool - Google Patents
Rope coring and reaming drilling tool Download PDFInfo
- Publication number
- CN215213342U CN215213342U CN202121469156.6U CN202121469156U CN215213342U CN 215213342 U CN215213342 U CN 215213342U CN 202121469156 U CN202121469156 U CN 202121469156U CN 215213342 U CN215213342 U CN 215213342U
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- reaming
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- bit
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- 238000005553 drilling Methods 0.000 title claims abstract description 48
- 239000004576 sand Substances 0.000 claims description 33
- 229910003460 diamond Inorganic materials 0.000 claims description 26
- 239000010432 diamond Substances 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 241001449342 Chlorocrambe hastata Species 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 2
- 238000005520 cutting process Methods 0.000 description 19
- 239000011435 rock Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a core reaming drilling tool is got to rope relates to the probing and gets core equipment technical field, including core inner tube assembly and reaming assembly are got to the rope, the reaming assembly includes reaming pipe and reaming bit assembly, and the reaming bit assembly is along the radial direction salient in the outer wall of reaming pipe, and core inner tube assembly is got to the rope is located the reaming intraductal and is connected with the reaming pipe, leaves the annular space between core inner tube assembly is got to the rope and the reaming pipe. The utility model provides a core is got to rope and is reamed drilling tool, through setting up core inner tube assembly and reaming assembly are got to the rope, behind the pipe fitting aggregate erection such as reaming assembly, core inner tube assembly is got to the rope can arrange in the reaming assembly to be provided with on the reaming assembly and stick out in the reamer bit of reaming pipe in the lateral wall, can carry out the reaming in the time of getting the core, get the completion of one time of core and reaming, and easy operation, it is efficient, and can set up one-level and multistage reamer bit, realize a multi-functional rope and get multistage reaming drilling tool of core.
Description
Technical Field
The utility model relates to a drilling equipment technical field especially relates to a rope coring reaming drilling tool.
Background
The wire-line coring technology is widely applied to drilling engineering, and the existing wire-line coring drilling tool has the advantages of obviously improving the drilling efficiency and the coring quality and reducing the labor intensity of coring operation.
However, the existing rope core drill tool has poor adaptability when facing complex strata, and the hole forming diameter of the existing rope core drill tool is smaller; in addition, when drilling in a soft stratum, settled sand in the drill hole is deposited, and accidents such as drill burying and the like are easily caused. Therefore, when drilling operation needs to be carried out in a stratum with a large target caliber and a poor stratum condition, coring and reaming are needed, and the occurrence of a buried drilling accident is prevented, so that the operation process is complicated, and the high efficiency advantage of the rope core drill is seriously restricted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a core reaming drilling tool is got to rope for solve prior art, when needs carry out the probing operation in the great and relatively poor stratum of stratum condition of target bore, need get earlier the core and ream again, and will prevent to bury the brill occurence of failure, the operation flow is loaded down with trivial details, seriously restricts the defect that core drilling tool high efficiency advantage was brought into play to the rope.
The utility model provides a core reaming drilling tool is got to rope, get core inner tube assembly and reaming assembly including the rope, the reaming assembly includes reaming pipe and reaming bit assembly, reaming bit assembly follows the radial direction salient of reaming pipe in the outer wall of reaming pipe, core inner tube assembly is got to the rope is located in the reaming pipe and with reaming union coupling, core inner tube assembly is got to the rope with leave the annular space between the reaming pipe.
According to the utility model provides a pair of rope coring reaming drilling tool, rope coring inner tube assembly is including coring inner tube, coring tube head, bullet card and fishing spearhead, coring tube head is located coring inner tube front end, the bullet card is located coring inner tube rear end, fishing spearhead is located coring inner tube rear end is salvaged throwing and dragging for the ware core inner tube time with throwing and dragging for the ware and connect, coring inner tube is located in the reaming tube.
According to the utility model provides a pair of rope coring reaming drilling tool, be equipped with in the annular space and right the ring, it fixes to right the ring on the internal face of reaming pipe, it is right to right the ring be used for the rope coring inner tube assembly is radial spacing.
According to the utility model provides a pair of core reaming reamer is got to rope, reamer bit assembly includes one-level reaming assembly and second grade reaming assembly, one-level reaming assembly is located second grade reaming assembly front end, the external diameter of one-level reaming assembly is less than the external diameter of second grade reaming assembly.
According to the utility model provides a pair of rope coring reaming drilling tool, one-level reaming assembly is including end to end's one-level reaming pipe, one-level joint and one-level reaming bit in proper order, the front end of one-level reaming pipe is connected and is got the core bit, the front end of one-level reaming bit is equipped with the one-level diamond compact piece, be equipped with one-level diamond wing piece on the lateral wall of one-level reaming bit, the end connection of one-level reaming bit second grade reaming assembly.
According to the utility model provides a pair of rope coring reaming drilling tool, a serial communication port, the one-level is equipped with the one-level water hole on connecting, the one-level water hole is by being close to the one end of annular space clearance is to being close to the one end slope downwardly extending of one-level diamond compact piece.
According to the utility model provides a pair of rope coring reaming drilling tool, second grade reaming assembly is including second grade joint, second grade reaming bit and the second grade reaming pipe of end to end connection in proper order, the front end of second grade reaming bit passes through the second grade joint with the one-level reaming bit is connected, the front end of second grade reaming bit is equipped with the compound piece of second grade diamond, be equipped with the second grade diamond wing piece on the lateral wall of second grade reaming bit, the second grade reaming pipe passes through the bullet card with get the spacing connection of core inner tube.
According to the utility model provides a pair of core reaming drilling tool is got to rope, second grade reaming assembly is still including dragging for the sand pipe, drag for the sand pipe with second grade reamer bit connects, second grade reamer pipe is located in the sand pipe and with it forms the sand setting chamber to drag for between the sand pipe.
According to the utility model provides a pair of core reaming drilling tool is got to rope, the rear end of dragging for the sand pipe is the inclined plane form, the emergence of the card brill condition when preventing to play the brill.
According to the utility model provides a pair of rope coring reamer drilling tool, be equipped with the second grade water hole on the second grade reamer bit, the second grade water hole is by being close to the one end of annular space is to being close to the one end slope downwardly extending of the compound piece of second grade diamond.
According to the utility model provides a pair of rope coring reamer tool, be equipped with the jump ring seat in the coring tube head, the jump ring is connected to the rear end of jump ring seat for the fixed rock core that gets into in the coring barrel.
The utility model provides a core is got to rope and is reamed drilling tool, through setting up core inner tube assembly and reaming assembly are got to the rope, behind the pipe fitting aggregate erection such as reaming assembly, core inner tube assembly is got to the rope can arrange in the reaming assembly to be provided with on the reaming assembly and stick out in the reamer bit of reaming pipe in the lateral wall, can carry out the reaming in the time of getting the core, get the completion of one time of core and reaming, and easy operation, it is efficient, and can set up one-level and multistage reamer bit, realize a multi-functional rope and get multistage reaming drilling tool of core.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a rope core-reaming drilling tool provided by the present invention;
fig. 2 is a schematic structural view of a rope coring inner tube assembly and a reamer bit provided by the present invention;
fig. 3 is a schematic structural diagram of a primary reaming tool provided by the present invention;
fig. 4 is a schematic structural diagram of a two-stage reamer bit provided by the present invention;
fig. 5 is the structural schematic diagram of the sand bailing pipe and the sand setting cavity provided by the utility model.
Reference numerals:
100: a rope coring inner tube assembly; 110: coring the inner tube; 120: a coring pipe head;
121: a clamp spring seat; 122: a clamp spring; 130: snapping;
140: an annular space; 150: a coring bit; 160: fishing a spearhead;
200: a reaming assembly; 210: a righting ring;
220: a reamer bit assembly; 221: a primary reaming assembly; 2211: a first-stage reaming pipe;
2212: a primary joint;
2213: a first-stage hole expanding drill bit;
2214: a primary cutting unit; 2215: a first-stage water hole;
222: a secondary reaming assembly; 2221, secondary broaching bit; 2222: a second-stage reaming pipe;
2223: a secondary cutting unit; 2224: fishing out the sand pipe; 2225: a sand setting chamber;
2226: a secondary water hole; 2227: and (4) secondary joints.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are 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 creative efforts belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "primary" and "secondary" and the like are used for the purpose of clearly indicating the numbering of the product parts and do not represent any substantial difference. "upper", "lower", "inner", and the like are used merely to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships may also be changed accordingly. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
It is to be understood that, unless otherwise expressly specified or limited, the term "coupled" is used broadly, and may, for example, refer to directly coupled devices or indirectly coupled devices through intervening media. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
It should be noted that unless otherwise specifically stated and limited, "anterior" refers to the direction in which the core reamer advances, e.g., the lower is the anterior and the upper is the posterior when drilling down. When the absolute position of the object to be described is changed, the relative positional relationship may also be changed accordingly, such as when drilling in a lateral direction, the direction of drilling is the front end, and the rear of drilling is the rear end. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described with reference to fig. 1-5.
Referring to fig. 1, the present embodiment provides a rope coring reamer tool comprising a rope coring internal tube assembly 100 and a reamer assembly 200. Reaming assembly 200 includes reaming pipe and reaming bit assembly 220, reaming bit assembly 220 follows the radial direction salient of reaming pipe in the outer wall surface of reaming pipe, rope coring inner tube assembly 100 is located in the reaming pipe and with the reaming pipe is connected, rope coring inner tube assembly 100 with leave annular space 140 between the reaming pipe.
Wherein, the rope coring inner tube assembly 100 is similar to the existing rope coring drill structure, the rope coring inner tube assembly 100 comprises a coring inner tube 110, a coring pipe head 120, a snap 130 and a fishing spear 160, the coring pipe head 120 is arranged at the front end of the coring inner tube 110, the snap 130 is arranged at the rear end of the coring inner tube 110, the fishing spear 160 is arranged at the rear end of the coring inner tube 110 and is connected with a fishing device when the fishing device fishes the coring inner tube, and the coring inner tube is arranged in the reaming tube.
The coring bit 120 is disposed at the front end of the cable core inner tube assembly 100, and the core to be drilled is inserted into the coring inner tube 110. The snap 130 is located at the rear end of the cable coring assembly 100 and is connected at its rear end to the spearhead 160 to enable a cable to be connected to pull out the cable coring assembly 100.
Specifically, the rope core reamer further comprises a core bit 150, and the core bit 150 is located at the front end of the reamer bit assembly 220. Preferably, the coring bit 150 is coupled to a reamer tube having an outer diameter slightly less than the outer diameter of the coring bit 150.
Specifically, a centering ring 210 is arranged in the annular space, the centering ring 210 is fixed on the inner wall surface of the reaming pipe, and the centering ring 210 is slidably connected with the rope coring inner pipe assembly 100, such as the centering ring 210 is slidably connected with the coring inner pipe 110. The centering ring 210 can radially limit the coring inner tube 110, and prevents the coring inner tube 110 from shaking to affect coring during the drilling process.
Preferably, a clamp spring seat 121 is arranged in the coring pipe head 120, and the rear end of the clamp spring seat 121 is connected with a clamp spring 122 for fixing a core entering the coring barrel.
Specifically, rope core reamer, reamer bit assembly 220's quantity does not do the restriction, can only contain one-level reamer assembly 200, also can contain multistage reamer bit assembly.
Preferably, the reamer head assembly 220 of the present embodiment includes a first-stage reaming assembly 221 and a second-stage reaming assembly 222, the first-stage reaming assembly 221 is located at a front end of the second-stage reaming assembly 222, and an outer diameter of the first-stage reaming assembly 221 is greater than an outer diameter of the second-stage reaming assembly 222.
This embodiment is through setting up two-stage reaming bit assembly, drills the in-process and carries out gradual reaming operation, and reaming efficiency is high, and reaming is led positive good.
Specifically, combine fig. 2 and fig. 3 to show, one-level reaming assembly 221 is including end to end's one-level reaming pipe 2211, one-level joint 2212 and one-level reamer bit 2213 in proper order, one-level reaming pipe 2211's front end is connected coring bit 150, one-level reamer bit 2213's front end is equipped with one-level diamond compact piece, be equipped with one-level diamond wing piece on one-level reamer bit 2213's the lateral wall, one-level diamond compact piece forms one-level cutting unit with one-level diamond wing piece combination. Preferably, primary reamer 2211 is a reamer, is shaped like a tube, and is provided with cutting fins extending in the forward and backward directions on the circumferential outer side wall. The trailing end of primary reamer head 2213 is connected to secondary reamer assembly 222.
Preferably, primary reamer 2211 and primary fitting 2212 are the same diameter, and annular space 140 remains between primary reamer 2211 and primary fitting 2212 and coring inner tube 110.
The primary connector 2212 is a multifunctional connector, and is provided with external threads at the upper and lower parts thereof, the upper end thereof is in threaded connection with the primary reamer 2213, and the lower end thereof is in threaded connection with the primary reamer 2211.
Specifically, be equipped with one-level cutting unit 2214 on one-level reamer bit 2213, one-level cutting unit 2214 is including establishing the diamond compact piece at its front end and establishing the diamond wing strip at its lateral wall, and diamond compact piece is used for reaming to advance and gets the cutting stratum, and diamond wing strip department external diameter slightly is greater than diamond compact piece department external diameter for the gauge protection and ensure that the drilling fluid upwards flows back. The primary connector 2212 is provided with a primary water hole 2215, and the primary water hole 2215 extends from one end close to the annular space 140 to one end close to the primary reamer bit 2213 in an inclined and downward manner. This embodiment sets up one-level water hole 2215 on one-level joint 2212, can be enough with drilling fluid water conservancy diversion in the annular space 140 to one-level reamer bit 2213 department the cuttings that one-level cutting unit 2214 reaming was bored upwards washes to carry the flowback drilling with the cuttings from bottom to top. And the primary broaching bit 2213 can be washed and cooled, so that the normal work of the primary broaching bit 2213 is ensured.
Specifically, as shown in fig. 4 and 5, the secondary reaming assembly 222 includes a secondary joint 2227, a secondary reaming bit 2221, and a secondary reaming tube 2222, which are sequentially connected end to end, one end of the secondary reaming bit 2221 is connected to the secondary joint 2227, the other end of the secondary reaming bit 2221 is connected to the secondary reaming tube 2222, a secondary cutting unit 2223 is disposed on the secondary reaming bit 2221, and the secondary reaming tube 2222 is in limit connection with the coring inner tube 110 through the elastic clip 130.
Specifically, the front end of the secondary reamer 2221 is provided with an internal thread. The upper and lower parts of the secondary joint 2227 are respectively provided with external threads, the upper end of the secondary joint is in threaded connection with the secondary expanding bit 2221, and the lower end of the secondary joint is in threaded connection with the primary expanding bit 2213.
Specifically, second grade reamer 2221 rear end is provided with the internal thread, second grade reamer 2222 be provided with internal thread assorted external screw thread, second grade reamer 2222 with second grade reamer 2221 thread sealing connects, just second grade reamer 2222 with it reserves annular space 140 to get between the core inner tube 110.
With one-level reamer bit 2213 is similar mutually, be equipped with second grade cutting element 2223 on second grade reamer bit 2221, second grade cutting element 2223 is including establishing the second grade diamond compact piece at its front end and establishing the second grade diamond wing strip at its lateral wall, and one-level diamond compact piece is used for reaming cutting rock stratum, and the second grade diamond wing strip is used for cutting wing side rock stratum, and the drilling tool normally gos forward when ensureing to ream.
Preferably, second grade water hole 2226 is directly equipped with on the second grade reamer bit 2221, second grade water hole 2226 is by being close to the one end of annular space 140 is to being close to the one end slope downwardly extending of second grade diamond compact. The secondary reamer bit 2221 of this embodiment is provided with the secondary water holes 2226, which can guide the drilling fluid in the annular space 140 to the secondary cutting unit 2223, so that the rock debris drilled by reaming the secondary cutting unit 2223 can be washed upward, and taken out of the drill hole from bottom to top, and the secondary cutting unit 2223 can be washed and cooled, thereby ensuring that the secondary cutting unit 2223 works normally.
Preferably, secondary reaming assembly 222 further includes a sand bailing tube 2224, wherein sand bailing tube 2224 is connected to secondary reaming bit 2221, and secondary reaming tube 2222 is located inside sand bailing tube 2224 and forms a sand setting cavity 2225 with sand bailing tube 2224.
The rear end of the secondary reaming bit 2221 is provided with an external thread, the sand bailing pipe 2224 is provided with an internal thread matched with the external thread, and the sand bailing pipe 2224 is connected to the rear end of the secondary reaming bit 2221 and forms a sand settling cavity 2225 between the secondary reaming bit 2222.
Preferably, the back end of the bailing tube 2224 is inclined, when there is a protrusion on the side wall of the bore hole to block the bailing tube 2224, the inclined surface of the bailing tube 2224 and the protrusion slide relatively to each other by rotating the bailing tube 2224, so as to avoid the obstacle, and the bailing tube 2224 is pulled out backward.
The wire-line core-reaming bit of this embodiment, through rotating reaming assembly 200, reaming assembly 200 drives coring bit 150 rotates, realizes drilling down of the drilling tool to the core at the drilling tool center enters into wire-line core-coring inner tube assembly 100, after coring inner tube 110 fills a certain amount of cores, via the rope pull-out of rear end. In the process of rotation of reaming assembly 200, first-stage reaming assembly 221 and second-stage reaming assembly 222 rotate simultaneously to perform progressive reaming, and meanwhile, drilling fluid with a certain pressure flows from top to bottom in annular space 140, and flows to the rock breaking working faces of first-stage reaming assembly 221 and second-stage reaming assembly 222 through first-stage water holes 2215 and second-stage water holes 2226 respectively, so that rock debris drilled by first-stage reaming assembly 221 and second-stage reaming assembly 222 is carried and discharged back.
When drilling in a soft stratum, mud and sand in a drill hole are not easy to be discharged by flowing drilling fluid and deposited in the drill hole, and a rope core and reamer bit is easy to be blocked in the drill hole. When the rope core-taking and hole-expanding drilling tool normally drills in, the sand bailing pipe 2224 can be used for bailing deposited sand, the sand enters the sand setting cavity 2225, when the sand is full of the sand setting cavity 2225, the rope core-taking and hole-expanding drilling tool is upwards pulled out, the sand can be pulled out, a large amount of sediment of the sand in a drill hole is prevented, and normal operation of the drill hole core-taking is ensured.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a core reaming drilling tool is got to rope, its characterized in that, includes that the rope coring inner tube assembly and reaming assembly, the reaming assembly includes reaming pipe and reaming bit assembly, reaming bit assembly is followed the radial direction salient of reaming pipe in the outer wall of reaming pipe, the rope coring inner tube assembly is located in the reaming pipe and with the reaming union coupling, the rope coring inner tube assembly with leave the annular space gap between the reaming pipe.
2. A rope coring reamer bit as claimed in claim 1, wherein the rope coring inner tube assembly comprises a coring inner tube, a coring tip, a snap and a spearhead, the coring tip is located at a front end of the coring inner tube, the snap is located at a rear end of the coring inner tube, the spearhead is located at the rear end of the coring inner tube and is connected with the bailer when the bailer is used to salvage the coring inner tube, and the coring inner tube is located in the reamer tube.
3. The wire-line core-taking and hole-expanding drill tool as claimed in claim 1 or 2, wherein a centering ring is arranged in the annular space, the centering ring is fixed on the inner wall surface of the hole-expanding pipe, and the centering ring is used for radially limiting the wire-line core-taking inner pipe assembly.
4. A rope coring reamer tool as recited in claim 2, wherein the reamer head assembly comprises a primary reaming assembly and a secondary reaming assembly, the primary reaming assembly being located at a forward end of the secondary reaming assembly, the primary reaming assembly having an outer diameter dimension that is less than an outer diameter dimension of the secondary reaming assembly.
5. A rope core-taking and hole-expanding drilling tool as claimed in claim 4, wherein the first-stage hole-expanding assembly comprises a first-stage hole-expanding pipe, a first-stage joint and a first-stage hole-expanding drill bit which are sequentially connected end to end, the front end of the first-stage hole-expanding pipe is connected with the core-taking drill bit, the front end of the first-stage hole-expanding drill bit is provided with a first-stage diamond composite sheet, the outer side wall of the first-stage hole-expanding drill bit is provided with a first-stage diamond wing sheet, and the tail end of the first-stage hole-expanding drill bit is connected with the second-stage hole-expanding assembly.
6. A rope core-extracting reamer bit as claimed in claim 5, wherein the primary joint is provided with a primary water hole extending from an end near the annular space to an end near the primary diamond compact in an inclined and downward manner.
7. A rope coring and reaming drilling tool as set forth in claim 5 or 6, wherein the second-stage reaming assembly comprises a second-stage joint, a second-stage reaming bit and a second-stage reaming pipe which are sequentially connected end to end, the front end of the second-stage reaming bit is connected with the first-stage reaming bit, the front end of the second-stage reaming bit is provided with a second-stage diamond composite sheet, a second-stage diamond wing sheet is arranged on the outer side wall of the second-stage reaming bit, and the second-stage reaming pipe is connected with the coring inner pipe through the elastic clamp.
8. The rope coring reamer tool of claim 7, wherein the secondary reaming assembly further comprises a sand bailing tube connected to the secondary reamer head, the secondary reamer tube being positioned within the sand bailing tube and forming a sand setting chamber with the sand bailing tube.
9. The wire rope core-reaming bit according to claim 8, wherein the back end of the sand bailing tube is beveled.
10. The rope core-pulling hole-expanding drill bit as recited in claim 7, wherein a second level water hole is formed in the second level hole-expanding drill bit, and the second level water hole extends downwards from one end close to the annular space to one end close to the second level diamond compact in an inclined manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121469156.6U CN215213342U (en) | 2021-06-30 | 2021-06-30 | Rope coring and reaming drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121469156.6U CN215213342U (en) | 2021-06-30 | 2021-06-30 | Rope coring and reaming drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215213342U true CN215213342U (en) | 2021-12-17 |
Family
ID=79432370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121469156.6U Expired - Fee Related CN215213342U (en) | 2021-06-30 | 2021-06-30 | Rope coring and reaming drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215213342U (en) |
-
2021
- 2021-06-30 CN CN202121469156.6U patent/CN215213342U/en not_active Expired - Fee Related
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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: 20211217 |