CN201397273Y - Packer for water pressure tests in large-diameter boreholes - Google Patents
Packer for water pressure tests in large-diameter boreholes Download PDFInfo
- Publication number
- CN201397273Y CN201397273Y CN2009201132233U CN200920113223U CN201397273Y CN 201397273 Y CN201397273 Y CN 201397273Y CN 2009201132233 U CN2009201132233 U CN 2009201132233U CN 200920113223 U CN200920113223 U CN 200920113223U CN 201397273 Y CN201397273 Y CN 201397273Y
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- diameter
- packer
- drilling rod
- core pipe
- water pressure
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- Expired - Fee Related
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Abstract
The utility model relates to a packer for water pressure tests in large-diameter boreholes, which needs to resolve technical problems of providing a packer for water pressure tests in large-diameter boreholes, wherein the packer is simple in structure and can meet requirements of water pressure tests in boreholes with diameters of 220mm. The technical scheme for resolving the problems includes that the packer for water pressure tests in large-diameter bore holes has a borehole testing section with length of 5m and diameter of 220mm, and a drill stem for drilling holes is arranged inside the borehole testing section. The packer is characterized in that the top of the drill stem is connected with a core pipe through a lower joint, a group of rubber plugs and gaskets which is arrayed at intervals is in series connection to the outside of the core pipe, the upper portion of the rubber plug at the top end is in series connection with an upper joint, the top of the core pipe is equipped witha core pipe nut, the upper joint is connected with a connecting pipe, the top of the connecting pipe is equipped with a dual-use joint, and the dual-use joint is further connected with an orifice drilling machine through the drill stem. The packer is mainly adaptable to permeability checking tests in concrete or rock core drilling with diameters of 220mm.
Description
Technical field
The utility model relates to a kind of large diameter borehole packer permeability test packing device that is used for.Main application diameter is the permeability rate check test in 220mm concrete or rock core drill hole.
Background technology
Development and quality requirements raising along with engineering investigation, drilling technique and facility all need to update renewal, as water power dam roller compacted concrete loose core, some large diameter boreholes such as concrete dam body flaw detection, also need water power prospecting boring routinely the same, carry out segmentation and do packer permeability test.
Summary of the invention
At the development of engineering investigation and the raising of quality requirements, satisfy the requirement of large diameter borehole packer permeability test, the purpose of this utility model is to provide a kind of large diameter borehole packer permeability test packing device that is used for, and this apparatus structure is simple and can satisfy the packer permeability test that diameter 220mm holes.
The technical scheme that the utility model adopted is: be used for large diameter borehole packer permeability test packing device, has the long 5m that is, diameter is the boring test section of 220mm, the drilling rod of using in the built-in pore-creating of boring test section, it is characterized in that: the top at drilling rod connects a core pipe by lower sub, the one group of spaced rubber of connecting in the core tube outside is filled in and pad, the top series connection top connection of rubber plug topmost, core pipe nut is equipped with at the top of described core pipe, described top connection is connected with connecting pipe again, the dual-purpose joint is equipped with at the connecting pipe top, and the dual-purpose joint is connected with the aperture rig by drilling rod again.
The diameter of described drilling rod is 50mm; The diameter of described core pipe is 127mm; The diameter of described rubber plug and pad is 215mm; The diameter of described connecting pipe is 168mm.
The bulging force of described rubber plug is conducted oneself with dignity less than drilling rod and is added the power P of rig pressurization sum, and simultaneously, P power is greater than 1.5～2 times of maximum packer permeability test force value.
The beneficial effects of the utility model are: this packer permeability test packing device utilizes former pore-creating drilling rod, the one group of rubber plug of connecting on test section top plays the effect of packing water, the rubber plug expands and relies on the drilling rod deadweight to add rig pressurization sum power P, one group of rubber plug is squeezed and compression-expansion simultaneously, off-test, releasing is to the pressure of rubber plug, and the loosening rubber plug of lifting makes the rubber plug return to original shape again.This device can not only satisfy the needs of engineering investigation, has more operating procedure characteristics simply and easily.
Description of drawings
Fig. 1 is the structural representation of the utility model under passive state.
Fig. 2 is the structural representation of the utility model under the pressurized swelling state.
Embodiment
As shown in Figure 1 and Figure 2, present embodiment is applied to hole depth less than 120m, and diameter is the packer permeability test of 220mm rock or concrete boring.This example is got long 5m, the boring test section 1 of diameter 220mm, in this boring test section, utilize the drilling rod 2 of a boring diameter for 50mm, the top of drilling rod connects the core pipe 6 that diameter is 127mm by lower sub 3, connect in the core tube outside one group of spaced rubber plug 4 and pad 5 (this example is selected 4 and 6 pads 5 of 6 rubbers plugs for use), the diameter of rubber plug 4 and pad 5 is 215mm, in the series connection top connection 7 of the top of the top rubber plug, core pipe nut 8 is housed at the top of core pipe 6, described top connection 7 is that the connecting pipe 9 of 168mm is connected with diameter again, dual-purpose joint 10 is equipped with at the connecting pipe top, and the dual-purpose joint is connected with the aperture rig by Φ 50mm drilling rod 2 again.
The bulging force of described rubber plug 4 should add the power P of rig pressurization sum less than drilling rod 2 deadweights, simultaneously, P power should be greater than 1.5～2 times of (foundations " water power hydraulic engineering water pressure test in borehole rules (DL/T5331-2005) " of maximum packer permeability test force value (1MPa), conventional maximum packer permeability test pressure is 1MPa, for making packer can reach the stagnant water effect of expection, P power must greater than maximum packer permeability test value 0.5MPa or more than, promptly this device is got 1.5～2 times of maximum packer permeability test force value).
For satisfying maximum packer permeability test pressure greater than 1MPa, by site test, 6 long 200mm rubbers plugs can satisfy testing requirements, and promptly packing device rubber plug portion accumulative total total length is greater than 1200mm (rubber plug length * rubber plug number=200mm * 6=1200mm).
Flow of installation of the present utility model is: with drilling rod 2 configuration test segment lengths 1, at test section drilling rod top this packing device is installed, and then is connected to the aperture with drilling rod, and link into an integrated entity with the vertical shaft drilling rod.
Principle of work of the present utility model is: rubber is filled in 4 expansion sealings, utilize rig oil pressure function locking vertical shaft drilling rod 2, by drilling rod 2 deadweights and rig pressurization, this pressure P transmission expands (as shown in Figure 2) rubber plug 4 by dual-purpose joint 10, diameter 168mm connecting pipe 9, top connection 7; Packer permeability test: supply water in test section by sebific duct and developmental tube with creeping into water pump, under the condition of waterflow stabilization, every 3min～5min surveys and reads once to be pressed into flow, and continuous four readings meet the setting-out requirement and finish test again.Off-test is removed rig earlier and is given vertical shaft drilling rod upward pressure, again with carrying (diameter 127mm core pipe 6 is installed the vacant length 25cm behind the rubber plug) about vertical shaft drilling rod 30cm on the elevator, make top connection 7, diameter 168mm connecting pipe 9, dual-purpose joint 10 be in the suspention tension state, and spacing by core pipe nut 8 maximum lifting height, make each rubber plug 4 of packing device all be in unsettled passive state, utilize the original rubber stopper shape of rubber self spring return of plug again.
Claims (3)
1, a kind of large diameter borehole packer permeability test packing device that is used for, has the long 5m that is, diameter is the boring test section (1) of 220mm, the drilling rod of using in the built-in pore-creating of boring test section (2), it is characterized in that: the top at drilling rod (2) connects a core pipe (6) by lower sub (3), the one group of spaced rubber of connecting in the core tube outside is filled in (4) and pad (5), the top series connection top connection (7) of rubber plug topmost, core pipe nut (8) is equipped with at the top of described core pipe (6), described top connection (7) is connected with connecting pipe (9) again, dual-purpose joint (10) is equipped with at the connecting pipe top, and the dual-purpose joint is connected with the aperture rig by drilling rod (2) again.
2, the large diameter borehole packer permeability test packing device that is used for according to claim 1, it is characterized in that: the diameter of described drilling rod (2) is 50mm; The diameter of described core pipe (6) is 127mm; The diameter of described rubber plug (4) and pad (5) is 215mm; The diameter of described connecting pipe (9) is 168mm.
3, the large diameter borehole packer permeability test packing device that is used for according to claim 1 and 2, it is characterized in that: the bulging force of described rubber plug (4) adds the power P of rig pressurization sum less than drilling rod (2) deadweight, simultaneously, P power is greater than 1.5～2 times of maximum packer permeability test force value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201132233U CN201397273Y (en) | 2009-01-22 | 2009-01-22 | Packer for water pressure tests in large-diameter boreholes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201132233U CN201397273Y (en) | 2009-01-22 | 2009-01-22 | Packer for water pressure tests in large-diameter boreholes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201397273Y true CN201397273Y (en) | 2010-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201132233U Expired - Fee Related CN201397273Y (en) | 2009-01-22 | 2009-01-22 | Packer for water pressure tests in large-diameter boreholes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201397273Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221712A (en) * | 2011-03-17 | 2011-10-19 | 黄河勘测规划设计有限公司 | Automatic testing method of wire line coring drilling hoisting-free pressurized water test |
| CN114837603A (en) * | 2022-05-25 | 2022-08-02 | 江苏省工程勘测研究院有限责任公司 | Borehole water-pressurizing test plug and system |
-
2009
- 2009-01-22 CN CN2009201132233U patent/CN201397273Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221712A (en) * | 2011-03-17 | 2011-10-19 | 黄河勘测规划设计有限公司 | Automatic testing method of wire line coring drilling hoisting-free pressurized water test |
| CN102221712B (en) * | 2011-03-17 | 2013-04-03 | 黄河勘测规划设计有限公司 | Automatic testing method of wire line coring drilling hoisting-free pressurized water test |
| CN114837603A (en) * | 2022-05-25 | 2022-08-02 | 江苏省工程勘测研究院有限责任公司 | Borehole water-pressurizing test plug and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20170122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |