CN201391270Y - Water pressure test packing device for drill holes with conventional diameter - Google Patents
Water pressure test packing device for drill holes with conventional diameter Download PDFInfo
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- CN201391270Y CN201391270Y CN200920117646U CN200920117646U CN201391270Y CN 201391270 Y CN201391270 Y CN 201391270Y CN 200920117646 U CN200920117646 U CN 200920117646U CN 200920117646 U CN200920117646 U CN 200920117646U CN 201391270 Y CN201391270 Y CN 201391270Y
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- drilling rod
- diameter
- core pipe
- aperture
- rubber plug
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Abstract
The utility model relates to a water pressure test packing device for drill holes with conventional diameter, which has simple structure, and can satisfy the water pressure tests of drill holes with five conventional diameters. The utility model adopts the technical solution that the top of a drilling rod is connected with a core pipe through a lower joint, a group of rubber plugs and pads, whose apertures and dimensions are matched and which are arranged at intervals, are connected outside the core pipe in series, the upper portion (selected according to the aperture) of the uppermost rubber plug is connected with an upper joint in series, the top of the core pipe is provided with a core pipe nut, the upper joint is also connected with a connecting pipe (selected according to the aperture), the top (selected according to the aperture) of the connecting pipe is provided with a two-purpose joint, and the two-purpose joint is then connected with an aperture drilling machine through the drilling rod. The packing device is mainly applicable to the permeability rate tests of rock core-drilling holes with five diameter standards of 75 mm, 91 mm, 110 mm, 130 mm and 150 mm.
Description
Technical field
The utility model relates to a kind of normal dia water pressure test in borehole packing device that is used for.Main application diameter is the permeability rate check test in the rock core drill hole of 75mm, 91mm, 110mm, 130mm, five kinds of specifications of 150mm.
Background technology
Along with the development of engineering investigation and the raising of quality requirement, drilling technique and facility all need to update renewal, for further improving the quality of prospecting boring test achievement, and satisfying packer permeability test standard (DL/T5331-2005) " embolism length is not less than the requirement of 8 times of boring apertures, need redesign and improve the packer permeability test packer, to satisfy the needs of conventional water pressure test in borehole.A kind of cone inflatable packer is arranged at present, extend on an original rubber plug device, the rubber plug of result's series connection has only a rubber plug at cone position really to work, and does not have the packing water effect of 8 times of aperture lengths.
Summary of the invention
At the development of engineering investigation and the raising of quality requirement, need further improve the performance of the packer device of conventional water pressure test in borehole.The purpose of this utility model is to provide a kind of normal dia water pressure test in borehole packing device that is used for, and this apparatus structure is simple and can satisfy the packer permeability test that conventional five kinds of diameters are holed.
The technical scheme that the utility model adopted is: be used for normal dia water pressure test in borehole packing device, has the long 5m that is, diameter is respectively 75mm, 91mm, 110mm, the boring test section of 130mm and five kinds of specifications of 150mm, the drilling rod of using in the built-in pore-creating of boring test section, it is characterized in that connecting a core pipe by lower contact at the top of drilling rod, connect in the core tube outside one group with aperture size coupling and spaced rubber plug and pad, the top of rubber plug (selecting) series connection top connection topmost by the aperture, core pipe nut is equipped with at the top of described core pipe, described top connection is connected with (selecting by the aperture) tube connector again, the dual-purpose joint is equipped with at tube connector top (selecting by the aperture), and the dual-purpose joint is connected with the aperture rig by drilling rod again.
The diameter of described drilling rod is 50mm or 43mm; The diameter of described core pipe is 43mm; The diameter of described rubber plug, pad and tube connector is all by aperture requirement coupling and selection (5 kinds of different apertures specifications).
The expansion 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.
The specific embodiment
As shown in Figure 1 and Figure 2, present embodiment is applied to hole depth less than 300m, and diameter is the packer permeability test (five kinds of 75mm, 91mm, 110mm, 130mm, 150mm) of five kinds of aperture test sections between 75mm～150mm.This example is got long 5m, the boring test section 1 of diameter 75mm, 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 43mm by lower contact 3, connect in the core tube outside one group of spaced rubber plug 4 and pad 5 (this example is selected 4 and 5 pads 5 of 6 rubbers plugs for use), the diameter of rubber plug 4 and pad 5 is 73mm, 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 tube connector 9 of 73mm is connected with diameter again, dual-purpose joint 10 is equipped with at the tube connector top, and the dual-purpose joint is connected with the aperture rig by Φ 50mm drilling rod 2 again.
The expansion 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, simultaneously, rubber plug length is not less than the requirement of 8 times of boring apertures, and the rubber plug and the pad quantity of various diameter borings are:
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, as shown in Figure 1.
Operating principle 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 73mm or 89mm or 108mm or 127mm or 146mm tube connector 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 43mm 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, tube connector 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 normal dia water pressure test in borehole packing device that is used for, has the long 5m that is, diameter is respectively 75mm, 91mm, 110mm, the boring test section (1) of 130mm and five kinds of specifications of 150mm, 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 contact (3), connect in the core tube outside one group with aperture size coupling and spaced rubber plug (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 tube connector (9) again, dual-purpose joint (10) is equipped with at the tube connector top, and the dual-purpose joint is connected with the aperture rig by drilling rod (2) again.
2, the normal dia water pressure test in borehole packing device that is used for according to claim 1, it is characterized in that: the diameter of described drilling rod (2) is 50mm or 43mm; The diameter of described core pipe (6) is 43mm; The diameter of described rubber plug (4), pad (5) and tube connector (9) is all by aperture requirement coupling and selection.
3, the normal dia water pressure test in borehole packing device that is used for according to claim 1 and 2, it is characterized in that: the expansion 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 |
|---|---|---|---|
| CN200920117646U CN201391270Y (en) | 2009-04-10 | 2009-04-10 | Water pressure test packing device for drill holes with conventional diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920117646U CN201391270Y (en) | 2009-04-10 | 2009-04-10 | Water pressure test packing device for drill holes with conventional diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391270Y true CN201391270Y (en) | 2010-01-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920117646U Expired - Fee Related CN201391270Y (en) | 2009-04-10 | 2009-04-10 | Water pressure test packing device for drill holes with conventional diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391270Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256018A (en) * | 2013-05-09 | 2013-08-21 | 中国水电十一局有限公司基础分局 | Top-pressure-type blocking device |
| CN105675470A (en) * | 2016-03-01 | 2016-06-15 | 长江岩土工程总公司（武汉） | Method for performing pump-in test by adopting sliding hydraulic rubber plug water plugging device |
| CN109252856A (en) * | 2018-10-25 | 2019-01-22 | 中冶集团武汉勘察研究院有限公司 | The vertical packer permeability test water-stopping method to intercept water with lateral water blockoff is carried out by boring aperture variation |
-
2009
- 2009-04-10 CN CN200920117646U patent/CN201391270Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256018A (en) * | 2013-05-09 | 2013-08-21 | 中国水电十一局有限公司基础分局 | Top-pressure-type blocking device |
| CN105675470A (en) * | 2016-03-01 | 2016-06-15 | 长江岩土工程总公司（武汉） | Method for performing pump-in test by adopting sliding hydraulic rubber plug water plugging device |
| CN105675470B (en) * | 2016-03-01 | 2018-07-31 | 长江岩土工程总公司（武汉） | The method that packer permeability test is carried out using sliding hydraulic rubber plug water block device |
| CN109252856A (en) * | 2018-10-25 | 2019-01-22 | 中冶集团武汉勘察研究院有限公司 | The vertical packer permeability test water-stopping method to intercept water with lateral water blockoff is carried out by boring aperture variation |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20180410 |