CN112814601B - Hook type quick dismounting inner pipe assembly suitable for rope core drilling tool of submarine drilling machine - Google Patents
Hook type quick dismounting inner pipe assembly suitable for rope core drilling tool of submarine drilling machine Download PDFInfo
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- CN112814601B CN112814601B CN202110269280.6A CN202110269280A CN112814601B CN 112814601 B CN112814601 B CN 112814601B CN 202110269280 A CN202110269280 A CN 202110269280A CN 112814601 B CN112814601 B CN 112814601B
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- hook
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- inner pipe
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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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/18—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being specially adapted for operation under water
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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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (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 discloses a hook type quick dismounting inner pipe assembly suitable for a rope coring drilling tool of a submarine drilling machine, which comprises a spring clamping assembly, a single-action assembly, a hook type dismounting device and an inner pipe, wherein the spring clamping assembly is connected with the single-action assembly, and the hook type dismounting device comprises a hook joint, a compression spring, a spring guide seat, a sliding sleeve and a hook cover joint; the single-acting component is connected with the hook joint through the inner pipe joint; the hook joint and the inner pipe joint are respectively provided with a spring hole and a spring blind hole; one end of the compression spring is connected with the bottom of the spring blind hole, and the other end of the compression spring is connected with the spring guide seat; the sliding sleeve is sleeved on the hook joint, and a cylindrical pin of the sliding sleeve passes through a long straight hole on the hook joint; the spring guide seat is supported on the cylindrical pin; the hook joint is provided with two symmetrical hooks; the cylindrical pins can move up and down to drive the two hooks to rotate around the hinge pair so as to catch and unhook the hook cover joint; the hood joint is connected with the inner pipe. The invention has simple structure and quick operation, and can meet the requirement of quick disassembly and assembly of the inner pipe assembly.
Description
Technical Field
The invention relates to a hook type quick dismounting inner pipe assembly suitable for a rope core drilling tool of a submarine drilling machine.
Background
With the gradual depletion of landed mineral resources, marine resources become potential alternative energy sources for future socioeconomic development due to the huge reserves. Currently, there are two main forms of subsea core drilling operations, which are large drill ship sampling and subsea rig sampling, respectively. Subsea drilling rigs refer to a class of highly automated, modular subsea sampling equipment that is remotely controlled on a mother ship deck by armored cables. Compared with the sampling by using a large drilling ship, the submarine drilling machine has the characteristics of high operation efficiency, strong concealment, low requirements on mother ship configuration and the like, and has wide application prospects in the field of marine geological exploration.
The inner pipe assembly commonly used at present and applicable to the rope core drilling tool of the submarine drilling machine comprises a spring clamping assembly, a single-action assembly and an inner pipe, and all adopt threaded connection. Compared with land drilling, submarine drilling is limited by a field, the inner pipe assembly is not convenient to disassemble and assemble quickly on the seabed due to the threaded connection mode, all the required inner pipe assemblies are required to be lowered to the seabed together before each operation, and the bullet clamping assembly and the single-action assembly in the upper end of the inner pipe assembly are required to be maintained on the sea after each drilling operation is finished, so that the auxiliary operation time of offshore operation is prolonged. In addition, because the weight of the whole submarine drilling machine is strictly limited each time, the number of the inner pipe assemblies which can be carried is directly related to the weight of the single inner pipe assembly, so that the total number of the inner pipe assemblies which can be carried when the single inner pipe assembly is overweight is reduced, and the effective coring capability of the submarine drilling machine is directly influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides the hook type quick-dismounting inner pipe assembly which has a simple structure and is quick to operate, and can meet the quick-dismounting requirement and is suitable for the rope core drilling tool of the submarine drilling machine.
The technical scheme adopted by the invention is as follows: the utility model provides a swift dismouting inner tube assembly of couple formula suitable for submarine drilling machine rope coring drilling tool, includes bullet card subassembly, single action subassembly, couple formula dismouting device and inner tube, bullet card subassembly be connected characterized by with single action subassembly: the hook type dismounting device comprises a hook connector, a compression spring, a spring guide seat, a sliding sleeve and a hook cover connector; the single-acting component is connected with the hook joint through the inner pipe joint; the hook joint and the inner pipe joint are respectively provided with a spring hole and a spring blind hole, and the spring holes are communicated with the spring blind holes and coaxial; one end of the compression spring is connected with the bottom of the spring blind hole, and the other end of the compression spring is connected with the spring guide seat; the hook joint is provided with a long straight hole, and the length direction of the long straight hole is along the axis direction of the inner pipe; the sliding sleeve is sleeved on the hook joint, a pin hole is formed in the sliding sleeve, a cylindrical pin is arranged in the pin hole, the axis of the cylindrical pin is perpendicular to the central line of the inner pipe, and the cylindrical pin penetrates through a long straight hole in the hook joint; the spring guide seat is supported on the cylindrical pin; the hook joint is provided with two symmetrical hook grooves, and a hook is hinged in each hook groove; the hooks are provided with waist-shaped holes, the cylindrical pins penetrate through the waist-shaped holes on the two hooks, and the cylindrical pins can drive the two hooks to rotate around the hinge pair to capture and unhook the hood joints; the upper end of the inner hole of the coupler housing joint is provided with an inward flange which can be mutually meshed with the hook; the hood joint is connected with the inner pipe.
In the quick disassembly and assembly inner tube assembly suitable for the rope coring drilling tool of the submarine drilling machine, the bottom of the spring guide seat is provided with the arc-shaped groove, and the cylindrical pin is embedded in the arc-shaped groove.
In the quick disassembly and assembly inner tube assembly suitable for the rope coring drilling tool of the submarine drilling machine, the hook groove II is arranged on the spring guide seat corresponding to the hook groove, and the hook groove II can prevent interference with the spring guide seat when the hook rotates.
In the quick disassembly and assembly inner tube assembly suitable for the rope coring drilling tool of the submarine drilling machine, the hook cover joint is provided with a plurality of groups of through holes, each group of through holes comprises two symmetrically arranged through holes, and the two hooks can be meshed into one group of through holes to prevent the hooks from rotating relative to the hook cover joint.
In the inner pipe assembly suitable for quickly disassembling and assembling the rope coring drilling tool of the submarine drilling machine, a gap is reserved between the lower end of the sliding sleeve and the bottom of the through hole when the hook is meshed with the hook cover joint.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention has simple structure, replaces the prior threaded connection mode by using the mutual engagement mode of the hook and the hook cover flange, and can realize the rapid disassembly of the inner pipe assembly of the submarine drilling machine on the seabed by means of the manipulator and the rotary chuck. Therefore, the quick matching with a plurality of inner pipes can be realized by only providing the upper end of the inner pipe assembly, thereby reducing the total weight of the carried inner pipe assembly, being beneficial to increasing the number of the inner pipes on the premise of unchanged rated weight of the submarine drilling machine, and improving the effective coring depth of the submarine drilling machine.
2) The hanger is arranged in the hanger groove of the hanger connector, the sliding sleeve for controlling the hanger to move is not subjected to other external forces except the rotating force of the cylindrical pin on the sliding sleeve during drilling operation, the risk of accidental unhooking in the drilling process is reduced, and the hanger has the advantage of high reliability.
3) Compared with the inner tube assembly of the rope core drilling tool of the existing submarine drilling machine, the invention reduces the carrying quantity of the upper end of the inner tube assembly, and greatly reduces the maintenance time and labor workload of all the carried drilling tools at sea after drilling.
Drawings
FIG. 1 is a schematic cross-sectional view of an inner tube assembly of the present invention.
Fig. 2 is a cross-sectional view of the hook type attaching/detaching device of the present invention.
Fig. 3 is an exploded view of the hook type dismounting device of the present invention.
Fig. 4 is a schematic view of the hook structure of the present invention.
FIG. 5 is a schematic view of the structure of the hood according to the present invention.
FIG. 6 is a schematic view of the inner tube assembly of the present invention.
FIG. 7 is a schematic view of the invention with the inner tube removed.
In the figure: 3-a hook joint; 4-compressing a spring; 5-a spring guide seat; 6, pin; 7-a cylindrical pin; 8-sliding sleeve; 9, hooking; 10-a hood joint; 11-an inner tube; 021-inner tube joint; 031-spring chamber; 091-kidney-shaped holes; 092-hook ramp; 101-flanges; 102-via.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the invention comprises a spring clip assembly 1, a single-action assembly 2, a hook-type dismounting device and an inner tube 11. The spring clip assembly 1 is connected with the single-acting assembly 2, and the hook type quick dismounting device comprises a hook connector 3, a compression spring 4, a spring guide seat 5, a pin 6, a cylindrical pin 7, a sliding sleeve 8, a hook 9 and a hook cover connector 10. The single-action assembly 2 is connected with the hook joint 3 through an inner pipe joint 021; the hook joint 3 and the inner tube joint 021 are respectively provided with a spring hole 031 and a spring blind hole, and the spring hole 031 is communicated with the spring blind hole and is coaxial. One end of the compression spring 4 is connected with the bottom of the spring blind hole, and the other end is connected with the spring guide seat 5. The hook joint 3 is provided with a long straight hole, and the length direction of the long straight hole is along the axis direction of the inner pipe. The sliding sleeve 8 is sleeved on the hook joint 3, a pin hole is formed in the sliding sleeve 8, a cylindrical pin 7 is arranged in the pin hole, the axis of the cylindrical pin 7 is perpendicular to the central line of the inner tube, and the cylindrical pin 7 penetrates through a long straight hole in the hook joint 3. The bottom of the spring guide seat 5 is provided with an arc-shaped groove, and the spring guide seat 5 is supported on the cylindrical pin 7; the cylindrical pin 7 is embedded in the arc-shaped groove.
The hook connector 3 is provided with two symmetrical hook grooves, and a hook 9 is hinged in each hook groove through a pin 6. The hooks 9 are provided with waist-shaped holes 091, the cylindrical pins 7 penetrate through the waist-shaped holes 091 on the two hooks 9, and the cylindrical pins 7 can drive the two hooks 9 to rotate around the hinge pair (pin 6) to capture and unhook the hood joint 10; the spring guide seat 5 is provided with a hook groove II corresponding to the hook groove, and the hook groove II can prevent the hook 7 from interfering with the spring guide seat 5 when rotating. The upper end of the inner hole of the hood joint 10 is provided with an inward flange 101, and the flange 101 can be mutually meshed with the hook 9. In order to prevent the hooks 9 from rotating relative to the hood joint 10, the hood joint 10 is provided with a plurality of groups of through holes, each group of through holes comprises two symmetrically arranged through holes 102, and the two hooks 9 can be snapped into one group of through holes. When the hook 9 is meshed with the hook cover joint 10, a gap is reserved between the lower end of the sliding sleeve 8 and the bottom of the through hole 102. The hood joint 10 is connected to the inner tube 11.
The specific use method of the invention is as follows:
the installation steps of the invention are as follows: as shown in fig. 6, the main manipulator of the submarine drilling machine takes out the lower end of the inner tube assembly formed by the threaded connection of the inner tube 11 and the hook cover joint 10 from the drilling tool warehouse, and displaces the upper part of the rotating chuck of the submarine drilling machine, and the lower end of the inner tube assembly, the rotating chuck and the upper end of the inner tube assembly hooked by the fishing mechanism pulled by the steel wire rope are positioned on the same axis, the rotating chuck moves upwards to clamp the inner tube 11, the main manipulator is removed, and then the upper end of the inner tube assembly moves downwards axially by the fishing mechanism pulled by the steel wire rope; until the flange 101 of the hood joint 10 hits the hook slope 092 of the hook 9. Continuing the axial movement, the flange 101 applies a radially inward reaction force to the hook ramp 092, the hook 9 rotates a certain angle about the pin 6, and the waist-shaped hole 091 drives the cylindrical pin 7 to compress the compression spring 4. When the flange 101 is not contacted with the hook inclined surface 092 any more, the hook 9 is restored to a tight state under the reset action of the compression spring 4, at the moment, whether the hook 9 is completely clamped into the through hole 102 of the hook cover joint 10 can be observed through the submarine camera, if not, the submarine drilling machine auxiliary mechanical arm can be used for clamping the single-action assembly to limit the rotation of the single-action assembly, and then the submarine drilling machine rotating chuck drives the inner pipe 11 to rotate, so that the hook 9 is completely clamped into the through hole 102, and the installation is completed.
The disassembly step of the invention comprises the following steps: as shown in fig. 7, after the inner pipe assembly is fished out, the submarine drilling machine manipulator moves above the submarine drilling machine rotating chuck, the rotating chuck moves upwards to clamp the inner pipe 11, and the manipulator is removed; then, the sliding sleeve 8 of the hook type quick dismounting device is clamped by the auxiliary manipulator of the submarine drilling machine to slide upwards, the sliding sleeve 8 drives the hook 9 connected with the sliding sleeve through the cylindrical pin 7 to rotate, the hook 9 is separated from the hook cover joint 10, the hook type quick dismounting device is dismounted, and accordingly the inner pipe assembly is dismounted.
Claims (5)
1. The utility model provides a swift dismouting inner tube assembly of couple formula suitable for submarine drilling machine rope coring drilling tool, includes bullet card subassembly, single action subassembly, couple formula dismouting device and inner tube, bullet card subassembly be connected characterized by with single action subassembly: the hook type dismounting device comprises a hook joint, a compression spring, a spring guide seat, a pin, a sliding sleeve and a hook cover joint; the single-acting component is connected with the hook joint through the inner pipe joint; the hook joint and the inner pipe joint are respectively provided with a spring hole and a spring blind hole, and the spring holes are communicated with the spring blind holes and coaxial; one end of the compression spring is connected with the bottom of the spring blind hole, and the other end of the compression spring is connected with the spring guide seat; the hook joint is provided with a long straight hole, and the length direction of the long straight hole is along the axis direction of the inner pipe; the sliding sleeve is sleeved on the hook joint, a pin hole is formed in the sliding sleeve, a cylindrical pin is arranged in the pin hole, the axis of the cylindrical pin is perpendicular to the central line of the inner pipe, and the cylindrical pin penetrates through a long straight hole in the hook joint; the spring guide seat is supported on the cylindrical pin; the hook joint is provided with two symmetrical hook grooves, and a hook is hinged in each hook groove; the hook is provided with a waist-shaped hole and a hook inclined plane; the cylindrical pins penetrate through the waist-shaped holes on the two hooks, and the cylindrical pins can drive the two hooks to rotate around the pins to capture and unhook the hood joints; the upper end of the inner hole of the coupler housing joint is provided with an inward flange which can be mutually meshed with the hook; the hook cover joint is connected with the inner pipe; when the steel wire rope pulls the salvaging mechanism to enable the upper end of the inner pipe assembly to move downwards in the axial direction, the flange of the coupler hood joint can touch the hook inclined surface of the hook to move in the axial direction continuously, the flange applies radial inward reaction force to the hook inclined surface, the hook rotates by a certain angle with the pin as the center, and the waist-shaped hole drives the cylindrical pin to compress the compression spring.
2. The quick detachable inner tube assembly of claim 1 adapted for use in a subsea drilling rig rope coring drilling tool, characterized by: the bottom of the spring guide seat is provided with an arc-shaped groove, and the cylindrical pin is embedded in the arc-shaped groove.
3. The quick detachable inner tube assembly of claim 1 adapted for use in a subsea drilling rig rope coring drilling tool, characterized by: the spring guide seat is provided with a hook groove II corresponding to the hook groove, and the hook groove II can prevent the hook from interfering with the spring guide seat when rotating.
4. The quick detachable inner tube assembly of claim 1 adapted for use in a subsea drilling rig rope coring drilling tool, characterized by: the hook cover joint is provided with a plurality of groups of through holes, each group of through holes comprises two symmetrically arranged through holes, and the two hooks can be meshed into one group of through holes to prevent the hooks from rotating relative to the hook cover joint.
5. The quick detachable inner tube assembly of claim 4 adapted for use in a subsea drilling rig rope coring drilling tool, wherein: when the hook is meshed with the hook cover joint, a gap is reserved between the lower end of the sliding sleeve and the bottom of the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110269280.6A CN112814601B (en) | 2021-03-12 | 2021-03-12 | Hook type quick dismounting inner pipe assembly suitable for rope core drilling tool of submarine drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110269280.6A CN112814601B (en) | 2021-03-12 | 2021-03-12 | Hook type quick dismounting inner pipe assembly suitable for rope core drilling tool of submarine drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112814601A CN112814601A (en) | 2021-05-18 |
| CN112814601B true CN112814601B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110269280.6A Active CN112814601B (en) | 2021-03-12 | 2021-03-12 | Hook type quick dismounting inner pipe assembly suitable for rope core drilling tool of submarine drilling machine |
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| CN (1) | CN112814601B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024201261A1 (en) * | 2023-03-25 | 2024-10-03 | Hy-Tech Drilling Ltd. | Quick-release inner tube connection for core retrieval |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1475632A (en) * | 1974-04-19 | 1977-06-01 | New Jersey Zinc Co | Coring tools for hollow drill strings |
| RU2297513C1 (en) * | 2005-10-25 | 2007-04-20 | Закрытое акционерное общество Научно-производственное предприятие (ЗАО НПП "СибБурМаш") | Core sampling tool |
| CN106351597A (en) * | 2016-11-17 | 2017-01-25 | 湖南科技大学 | Natural gas hydrate pressure retaining rope coring drill applicable to submarine drill |
| WO2018133886A1 (en) * | 2017-01-23 | 2018-07-26 | 珠海市英格尔特种钻探设备有限公司 | Rope coring drill-based engineering geology drilling construction method |
| CN109826580A (en) * | 2019-04-15 | 2019-05-31 | 湖南科技大学 | A one-way valve opening control mechanism for a pressure-maintaining rope core drilling tool |
| CN111173467A (en) * | 2020-03-03 | 2020-05-19 | 湖南科技大学 | Rope coring drilling tool suitable for large-caliber geological drilling |
| CN111236873A (en) * | 2020-03-24 | 2020-06-05 | 湖南科技大学 | Submarine gas hydrate fidelity wireline core drilling tool and its operation method |
| CN111636841A (en) * | 2020-06-02 | 2020-09-08 | 中国地质科学院勘探技术研究所 | Assembly fishing mechanism in through type rope core drill |
| CN211874435U (en) * | 2020-04-13 | 2020-11-06 | 河北地矿科技开发有限责任公司 | Deep hole rope coring safety salvage conveyor |
| CN111997556A (en) * | 2020-10-12 | 2020-11-27 | 湖南科技大学 | A salvage device for claw type wire rope coring tool suitable for geological exploration |
| CN214464020U (en) * | 2021-03-12 | 2021-10-22 | 湖南科技大学 | Hook-type quick-disassembly inner pipe assembly suitable for subsea drilling rig corded core drilling tools |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6736224B2 (en) * | 2001-12-06 | 2004-05-18 | Corion Diamond Products Ltd. | Drilling system and method suitable for coring and other purposes |
-
2021
- 2021-03-12 CN CN202110269280.6A patent/CN112814601B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1475632A (en) * | 1974-04-19 | 1977-06-01 | New Jersey Zinc Co | Coring tools for hollow drill strings |
| RU2297513C1 (en) * | 2005-10-25 | 2007-04-20 | Закрытое акционерное общество Научно-производственное предприятие (ЗАО НПП "СибБурМаш") | Core sampling tool |
| CN106351597A (en) * | 2016-11-17 | 2017-01-25 | 湖南科技大学 | Natural gas hydrate pressure retaining rope coring drill applicable to submarine drill |
| WO2018133886A1 (en) * | 2017-01-23 | 2018-07-26 | 珠海市英格尔特种钻探设备有限公司 | Rope coring drill-based engineering geology drilling construction method |
| CN109826580A (en) * | 2019-04-15 | 2019-05-31 | 湖南科技大学 | A one-way valve opening control mechanism for a pressure-maintaining rope core drilling tool |
| CN111173467A (en) * | 2020-03-03 | 2020-05-19 | 湖南科技大学 | Rope coring drilling tool suitable for large-caliber geological drilling |
| CN111236873A (en) * | 2020-03-24 | 2020-06-05 | 湖南科技大学 | Submarine gas hydrate fidelity wireline core drilling tool and its operation method |
| CN211874435U (en) * | 2020-04-13 | 2020-11-06 | 河北地矿科技开发有限责任公司 | Deep hole rope coring safety salvage conveyor |
| CN111636841A (en) * | 2020-06-02 | 2020-09-08 | 中国地质科学院勘探技术研究所 | Assembly fishing mechanism in through type rope core drill |
| CN111997556A (en) * | 2020-10-12 | 2020-11-27 | 湖南科技大学 | A salvage device for claw type wire rope coring tool suitable for geological exploration |
| CN214464020U (en) * | 2021-03-12 | 2021-10-22 | 湖南科技大学 | Hook-type quick-disassembly inner pipe assembly suitable for subsea drilling rig corded core drilling tools |
Non-Patent Citations (1)
| Title |
|---|
| 针对海底钻机硬岩钻进的绳索取心钻具关键机构优化;彭奋飞 等;《地质与勘探》;20200131;第56卷(第1期);全文 * |
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| CN112814601A (en) | 2021-05-18 |
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