CN112554782B - Method for carrying out sectional isolation of water pressing, pressure measuring and water pumping drilling - Google Patents
Method for carrying out sectional isolation of water pressing, pressure measuring and water pumping drilling Download PDFInfo
- Publication number
- CN112554782B CN112554782B CN202011457447.3A CN202011457447A CN112554782B CN 112554782 B CN112554782 B CN 112554782B CN 202011457447 A CN202011457447 A CN 202011457447A CN 112554782 B CN112554782 B CN 112554782B
- Authority
- CN
- China
- Prior art keywords
- separation device
- drilling
- test
- test section
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000002955 isolation Methods 0.000 title claims abstract description 22
- 238000005086 pumping Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 87
- 238000000926 separation method Methods 0.000 claims abstract description 61
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 claims 6
- 230000011218 segmentation Effects 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- 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
- E21B7/00—Special methods or apparatus for drilling
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Landscapes
- 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)
- Geophysics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a method for carrying out sectional isolation of water pressing, pressure measuring and water pumping drilling holes, wherein the drilling holes of a test section 1 are constructed into inverted truncated cone shapes, an upper separation device and a lower separation device which are provided with certain elasticity and correspond to the test section are arranged on the test section, and then pressure is applied to press the upper separation device and the lower separation device through a drill rod, so that the sectional isolation of the drilling holes is realized; the method can realize the isolation of any test section and other sections, and after the isolation is formed, a water pressure test, a fluid pressure test and a water pumping test of the stratum corresponding to the isolation section can be carried out; after the test and the experiment are completed, the upper and lower separating devices can be pulled out to realize recovery.
Description
Technical Field
The invention relates to the field of geology, in particular to a method for carrying out sectional isolation of water pressing, pressure measuring and water pumping drilling.
Background
In the prior art, a stratum is revealed by utilizing drilling, and corresponding water pressure tests, fluid pressure tests, water pumping tests and the like are carried out on a stratum in a certain section so as to obtain corresponding parameters of the stratum in the test section. The strata are distributed in layers, and the permeability, pore pressure, pore fracture structure morphology and the like are different among each layer. If the corresponding parameters of the preset horizon are to be obtained accurately, the horizon must be separated from other horizons to prevent interference and influence of other horizons when corresponding tests are carried out.
At present, a conventional drilling hole is cylindrical with equal diameter, and if the sectional isolation of the drilling hole is to be realized, a current common method is to install a device with a variable volume in the drilling hole. The device is lowered to a preset position under the state of smaller volume, and then the device is enlarged by adopting a corresponding method so as to realize the sectional isolation of the drilling holes. There are three main ways currently in common use: firstly, an airbag is adopted for isolation, firstly, an uninflated airbag is lowered to a preset position, then a specially installed pipeline is adopted for inflating the airbag, after the airbag bulges, a drilling space of an isolation section is blocked, a test section and a test section between the two airbags are generally isolated through an upper airbag and a lower airbag or a front airbag and a rear airbag, recovery can be realized after the air discharging of the airbags is finished after the test and the test, a high-pressure pipeline for inflating the airbag is specially installed, the airbag is required to be lowered simultaneously with a drill rod, the space of the drilling hole is limited, the pipeline is extremely inconvenient to lower, and the pipeline is easy to tear off for a deep hole, as shown in China patent 201910821076.3; secondly, as in the chinese patent 201911174604.7, a mode of isolating different sections in a borehole is provided, in which a rope is specially installed, and the diameter of the separator is increased by the pulling action of the rope to perform the isolating function, and in this method, the rope is inconvenient to be lowered and operated, and is easy to be wound and torn during deep hole; third, the spacers are made of an expanded material, such as chinese patent 202010250896.4, which uses the expansion of a material installed in a fixed location to separate different sections of a borehole, but once the separation is formed, the separated material cannot be recovered and is difficult to clean.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a method for carrying out sectional isolation of water pressing, pressure measuring and water pumping drilling, which is suitable for lithologic strata with high strength and stable structure, has simple principle and relatively convenient operation, and has application value for a water pressing test, a fluid pressure test and a water pumping test of any stratum layer corresponding to a test section of drilling holes with any azimuth and inclination angles.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a method for carrying out water pressing, pressure measuring and water pumping drilling sectional isolation, which comprises the following steps:
1) Constructing the drilling holes corresponding to the test sections into inverted truncated cone shapes according to the position requirements of the test sections;
2) After the drilling construction is finished, reversely calculating the hole diameters of the upper end face and the lower end face of the segmented horizon according to the drilling depth of the position of the segmented horizon to be tested;
3) The upper separating device and the lower separating device which are also inverted truncated cone-shaped are selected to seal the upper end face and the lower end face of the segmented horizon respectively, the upper separating device and the lower separating device are fixedly connected through a high-strength flower pipe, the upper end of the flower pipe penetrates through the upper separating device and then is connected with a drill rod and is communicated with the space in the drill rod, the flower pipe is of a hollow structure, a part of the flower pipe, which is positioned between the upper separating device and the lower separating device, is provided with a plurality of through holes, and pressure is applied to the upper separating device through the drill rod, so that the upper separating device and the lower separating device are stably arranged on the upper end face and the lower end face of the segmented horizon, and finally the separation of a test section is realized;
4) After the sectional layer to be tested is formed, carrying out a water pressing test, a fluid pressure test and a water pumping test on the test section and the test section through the space in the drill rod;
5) After the test is completed, the drill rod is pulled out, the upper separation device and the lower separation device are pulled out to recycle the drill rod, the drill holes can be restored to the original state, and the test work of any other sectional layer can be continued according to the test requirement.
PreferablyIn the step 1), the concrete method for constructing the drilling holes corresponding to the test sections into the inverted truncated cone shape comprises the following steps: the test section is arranged at the depth H 1 To H 2 The position of the drilling hole is set as o point, and the hole depth is o to H 1 The section is constructed into a cylinder shape by adopting conventional drilling equipment, and the aperture is d 1 Access hole depth H 1 Total length H for time exchange 2 -H 1 Is consistent with the final pore-forming shape, and the outer diameter d of the bottom end of the drilling tool 2 The tip of the external channel d 1 Wherein d is 2 <d 1 The test section is constructed to have a top diameter d 1 The diameter of the bottom is d 2 Is drilled in the shape of a reverse truncated cone, and the diameter d is adopted if required 2 The other non-test sections are constructed in a conventional cylindrical shape.
Preferably, in the step 2), the method for back calculating the hole diameters of the upper end face and the lower end face of the segmented horizon is as follows: such as layered layer at hole depth H 1 ' to H 2 ', wherein H 1 <H 1 ’<H 2 ’<H 2 The drilling hole diameters of the upper end face and the lower end face of the layering layer are respectively d 1 ' and d 2 'A'; d is then 1 ' and d 2 The' calculation formula is respectively:and->
Preferably, the upper and lower spacers are made of rubber having a certain elasticity and have a height of 0.5m up and down.
Preferably, in step 3), the outer diameters of the lower ends of the upper separation devices are d respectively 1 The external diameter of the upper end of the lower separation device is d 2 ′+10mm。
Preferably, in the step 3), the pipe is replaced by a drill rod, the drill rod passes through the upper separating device and is fixed on the lower separating device, the upper separating device is also fixed with the drill rod, and a through hole for communicating the inner space of the drill rod is formed in the outer wall of the part of the drill rod between the upper separating device and the lower separating device.
Preferably, in step 4), during relevant tests and testing, the upper separation device and the lower separation device keep the descending length unchanged through the clamping and force application actions of the drilling machine, namely, the positions of the upper separation device and the lower separation device are kept unchanged, so that the separation effect and the lengths of test and test sections are kept unchanged.
The invention has the beneficial effects that: the method is suitable for lithologic strata with high strength and stable structure, creatively drills the test section into an inverted truncated cone shape, adopts the upper separation device and the lower separation device with corresponding shapes to separate the upper end and the lower end of the test section, well realizes the separation of the test section from other sections, has simple principle and relatively convenient operation, has application value in the water pressure test, the fluid pressure test and the water pumping test of the test section drilled at any azimuth and inclination angle corresponding to any stratum level, and can pull out the upper separation device and the lower separation device after the test is completed to realize recovery.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a test section according to an embodiment of the present invention;
fig. 2 is a schematic diagram of mounting positions of an upper partition device and a lower partition device at a segment level according to an embodiment of the present invention.
Reference numerals illustrate:
1. a test section; 2. a drill rod; 3. an upper partition means; 4. a segmented horizon; 5. a flower tube; 6. and a lower separator.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 and 2, the method for carrying out the sectional isolation of water pressing, pressure measuring and water pumping drilling holes specifically comprises the following steps:
1) Constructing the corresponding drilling holes of the test section 1 into an inverted truncated cone shape according to the position requirement of the test section 1, and constructing other non-test sections 1 into a conventional cylinder shape; the specific method comprises the following steps: let test section 1 be located at depth H 1 To H 2 The position of the drilling hole is set as o point, and the hole depth is o to H 1 The section is constructed into a cylinder shape by adopting conventional drilling equipment, and the aperture is d 1 Access hole depth H 1 Total length H for time exchange 2 -H 1 Is consistent with the final pore-forming shape, and the outer diameter d of the bottom end of the drilling tool 2 The tip of the external channel d 1 Wherein d is 2 <d 1 Then the test section 1 is constructed to have a top diameter d 1 The diameter of the bottom is d 2 Is drilled in the shape of a reverse truncated cone, and the diameter d is adopted if required 2 Is used for constructing a cylindrical hole by a conventional drilling tool.
2) After the drilling construction is finished, reversely calculating the hole diameters of the upper end face and the lower end face of the segmented layer 4 according to the drilling depth of the position of the segmented layer 4 to be tested; the specific back calculation method comprises the following steps: such as layered layer at hole depth H 1 ' to H 2 ', wherein H 1 <H 1 ’<H 2 ’<H 2 The drilling hole diameters of the upper end face and the lower end face of the layering layer are respectively d 1 ' and d 2 'A'; d is then 1 ' and d 2 The' calculation formula is respectively:and->
3) The upper separating device 3 and the lower separating device 6 which are also inverted truncated cone-shaped are selected to seal the upper end face and the lower end face of the segmented layer 4 respectively, the upper separating device 3 and the lower separating device 6 are made of rubber with certain elasticity, the upper height and the lower height of the upper separating device 3 and the lower separating device 6 are respectively 0.5m, and the outer diameter of the lower end of the upper separating device 3 is d respectively 1 The external diameter of the upper end of the lower separation device 6 is d, which is' +10mm 2 ' 10mm; the upper separation device 3 and the lower separation device 6 are fixedly connected by adopting a high-strength flower pipe 5, the upper end of the flower pipe 5 passes through the upper separation device 3 and then is connected with the drill rod 2 and is communicated with the space in the drill rod 2, the flower pipe 5 is of a hollow structure, and a plurality of through holes are formed in the part of the flower pipe 5 between the upper separation device 3 and the lower separation device 6;
the descending length H1' -0.5m of the drill rod 2, and the outer diameter of the upper and lower separating devices 6 made of rubber is slightly larger than the bore diameter of the drill hole in the later stage of descending of the drill rod 2, so that additional pressure is required to be applied to the upper and lower separating devices 6 through the drill rod 2, and the descending length of the drill rod 2 is ensured; after the lowering is finished, the upper and lower separating devices 6 separate the drilling holes at the hole depths H2', H1', and the drilling holes H1 'to H2' sections form test and test sections separated from other layers;
4) After the sectional layer 4 to be tested is formed, carrying out a water pressure test, a fluid pressure test and a water pumping test on the test section and the test section through the space in the drill rod 2; when relevant tests and tests are carried out, the upper separation device 3 and the lower separation device 6 keep the descending length unchanged through the clamping and force application functions of the drilling machine, namely the positions of the upper separation device 3 and the lower separation device 6 are kept unchanged, so that the separation effect and the lengths of the test and test sections 1 are ensured to be unchanged
5) After the test is finished, the drill rod 2 is pulled out, the upper separating device 3 and the lower separating device 6 are pulled out for recycling, the drill holes can be restored to the original state, and the test work of any other segmented layer 4 are carried out according to the test requirement
Example 2
In the step 3), the drill rod 2 is adopted to replace the flower pipe 5, the drill rod 2 passes through the upper separating device 3 and is then fixed on the lower separating device 6, the upper separating device 3 is also fixed with the drill rod 2, a through hole for communicating the inner space of the part of the outer wall of the drill rod 2 between the upper separating device 3 and the lower separating device 6 is formed, and other steps are the same as those of the embodiment 1.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. The method for carrying out the sectional isolation of the water pressing, pressure measuring and water pumping drilling is characterized by comprising the following steps of:
1) Constructing the corresponding drilling holes of the test section (1) into an inverted truncated cone shape according to the position requirements of the test section (1);
2) After the drilling construction is finished, reversely calculating the hole diameters of the upper end face and the lower end face of the sectional layer (4) according to the drilling depth of the position of the sectional layer (4) to be tested;
3) An upper separation device (3) and a lower separation device (6) which are also in the shape of inverted circular truncated cones are selected, the upper end face and the lower end face of the segmentation horizon (4) are respectively sealed, a high-strength flower pipe (5) is fixedly connected between the upper separation device (3) and the lower separation device (6), the upper end of the flower pipe (5) penetrates through the upper separation device (3) and then is connected with a drill rod (2) and is communicated with the inner space of the drill rod (2), the flower pipe (5) is of a hollow structure, a plurality of through holes are formed in the part, located between the upper separation device (3) and the lower separation device (6), of the flower pipe (5), pressure is applied to the upper separation device (3) and the lower separation device (6) through the drill rod (2), and therefore the upper separation device (3) and the lower separation device (6) are stably installed on the upper end face and the lower end face of the segmentation horizon (4), and separation of a test section (1) is finally achieved;
4) After the sectional layer (4) to be tested is formed, carrying out a water pressure test, a fluid pressure test and a water pumping test on the test section and the test section through the space in the drill rod (2);
5) After the test is finished, the drill rod (2) is pulled out, the upper separation device (3) and the lower separation device (6) are pulled out to recycle the drill rod, the drill holes can be restored to the original state, and the test work of any other sectional layer (4) are continued according to the test requirement.
2. The method for carrying out the sectional isolation of the water pumping, pressure measurement and water pumping drilling holes according to claim 1, wherein in the step 1), the specific method for constructing the corresponding drilling holes of the test section (1) into the inverted circular truncated cone shape is as follows: the test section (1) is arranged at the depth H 1 To H 2 The position of the drilling hole is set as o point, and the hole depth is o to H 1 The section is constructed into a cylinder shape by adopting conventional drilling equipment, and the aperture is d 1 Access hole depth H 1 Total length H for time exchange 2 -H 1 Is consistent with the final pore-forming shape, and the outer diameter d of the bottom end of the drilling tool 2 The tip of the external channel d 1 Wherein d is 2 <d 1 The test section (1) is constructed to have a top diameter d 1 The diameter of the bottom is d 2 Is drilled in the shape of a reverse truncated cone, and the diameter d is adopted if required 2 The other non-test sections (1) are constructed into a conventional cylinder shape.
3. The method for carrying out the sectional isolation of the pressurized water, the pressure measurement and the pumping drilling according to claim 2, wherein the method for reversely calculating the pore diameters of the upper end face drilling and the lower end face drilling of the sectional horizon (4) in the step 2) is as follows: the layering layer is positioned at the hole depth H 1 ' to H 2 ', wherein H 1 <H 1 ’<H 2 ’<H 2 The drilling hole diameters of the upper end face and the lower end face of the layering layer are respectively d 1 ' and d 2 'A'; d is then 1 ' and d 2 The' calculation formula is respectively:and->
4. A method for carrying out sectionalized isolation of water pressure, pressure measurement and water pumping drilling according to claim 1, wherein the upper separation device (3) and the lower separation device (6) are made of rubber with certain elasticity, and the height of the upper separation device and the lower separation device is 0.5m.
5. A method for carrying out the sectionalized isolation of water pressure, pressure measurement and water pumping drilling according to claim 4, wherein in the step 3), the outer diameter of the lower end of the upper separation device (3) is d respectively 1 The external diameter of the upper end of the lower separation device (6) is d 2 ′+10mm。
6. The method for carrying out the sectional isolation of the pressurized water, the pressure measurement and the water pumping and drilling according to the claim 1, wherein in the step 3), the flower pipe (5) is replaced by a drill pipe (2), the drill pipe (2) is fixed on the lower separation device (6) after penetrating out of the upper separation device (3), the upper separation device (3) is also fixed with the drill pipe (2), and a through hole which is communicated with the inner space of the drill pipe (2) is formed in the part of the outer wall of the drill pipe (2) between the upper separation device (3) and the lower separation device (6).
7. The method for carrying out the sectional isolation of the pressurized water, the pressure measurement and the pumping of the drill hole according to the claim 1 is characterized in that in the step 4), when relevant tests and the testing are carried out, the upper separation device (3) and the lower separation device (6) keep the descending length unchanged through the clamping and force application actions of the drilling machine, namely the positions of the upper separation device (3) and the lower separation device (6) are kept unchanged, so that the separation effect and the lengths of the test section (1) are kept unchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011457447.3A CN112554782B (en) | 2020-12-11 | 2020-12-11 | Method for carrying out sectional isolation of water pressing, pressure measuring and water pumping drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011457447.3A CN112554782B (en) | 2020-12-11 | 2020-12-11 | Method for carrying out sectional isolation of water pressing, pressure measuring and water pumping drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112554782A CN112554782A (en) | 2021-03-26 |
| CN112554782B true CN112554782B (en) | 2024-01-30 |
Family
ID=75061942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011457447.3A Active CN112554782B (en) | 2020-12-11 | 2020-12-11 | Method for carrying out sectional isolation of water pressing, pressure measuring and water pumping drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112554782B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02140390A (en) * | 1987-11-24 | 1990-05-30 | Sa Soletanche | Device for executing hydraulic test and/or grouting in boring pit |
| CN103091229A (en) * | 2013-01-31 | 2013-05-08 | 河海大学 | Variable water head sectional permeation coefficient measuring equipment and measuring method |
| CN203686161U (en) * | 2014-02-11 | 2014-07-02 | 程昕 | Pull-press faucet |
| CN205981917U (en) * | 2016-07-14 | 2017-02-22 | 长江岩土工程总公司（武汉） | Continuous water head test ware of double -balloon formula |
| 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 |
| CN110700819A (en) * | 2019-10-12 | 2020-01-17 | 重庆市市政设计研究院 | Anhydrous drilling sound wave detection and water pressure test integrated device |
| CN110984960A (en) * | 2019-11-19 | 2020-04-10 | 四川省蜀通岩土工程公司 | Jacking type layered water pumping and injecting test system and method for same-diameter drilling |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7493954B2 (en) * | 2005-07-08 | 2009-02-24 | Besst, Inc. | Systems and methods for installation, design and operation of groundwater monitoring systems in boreholes |
-
2020
- 2020-12-11 CN CN202011457447.3A patent/CN112554782B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02140390A (en) * | 1987-11-24 | 1990-05-30 | Sa Soletanche | Device for executing hydraulic test and/or grouting in boring pit |
| CN103091229A (en) * | 2013-01-31 | 2013-05-08 | 河海大学 | Variable water head sectional permeation coefficient measuring equipment and measuring method |
| CN203686161U (en) * | 2014-02-11 | 2014-07-02 | 程昕 | Pull-press faucet |
| CN205981917U (en) * | 2016-07-14 | 2017-02-22 | 长江岩土工程总公司（武汉） | Continuous water head test ware of double -balloon formula |
| 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 |
| CN110700819A (en) * | 2019-10-12 | 2020-01-17 | 重庆市市政设计研究院 | Anhydrous drilling sound wave detection and water pressure test integrated device |
| CN110984960A (en) * | 2019-11-19 | 2020-04-10 | 四川省蜀通岩土工程公司 | Jacking type layered water pumping and injecting test system and method for same-diameter drilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112554782A (en) | 2021-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111742110B (en) | Pressure testing of inflatable packer assembly | |
| CN108952694B (en) | Side pressure test device and method | |
| CN111963250B (en) | Borehole gas extraction negative pressure detection device and detection method | |
| CN108590644A (en) | Heavy caliber test well is layered bailing test device and layering pumping device | |
| CN212335970U (en) | Monitoring device for layered settlement of soil body | |
| SA109300591B1 (en) | A Formation Testing Probe Assembly Having an Elongated Packer | |
| CN111622706A (en) | Separation water-stopping device and method capable of transforming strong-sealing single-well double-layer hydrological monitoring well | |
| CN107420100B (en) | Layered water pumping device and layered water pumping system | |
| CN112554782B (en) | Method for carrying out sectional isolation of water pressing, pressure measuring and water pumping drilling | |
| CN106368248B (en) | A kind of deep-sea soil investigation, soil exploration seat bottom device with auto-strengthening air bag | |
| CN208168867U (en) | Heavy caliber test well is layered bailing test device and layering pumping device | |
| CN217300527U (en) | Drilling hole sealing device for karst investigation | |
| JP5522685B2 (en) | Sealing device | |
| CN203798477U (en) | Two-loop hydraulic-fracturing geostress-testing device for wire-line coring drill rod | |
| CN113482562B (en) | Covering layer core-taking touch probe test device and using method | |
| CN214503289U (en) | Water pressure test device | |
| CN208565659U (en) | A kind of waterway conversion valve for the interior test that drills | |
| CN113984627A (en) | Rock stratum permeability testing device | |
| CN111549746A (en) | Device and method for monitoring layered settlement of soil | |
| CN209908442U (en) | Oil reservoir deep fixed point positioning and azimuth pressure maintaining coring tool | |
| CN206189477U (en) | Automatic deep sea soil investigation foot stall device of rightting gasbag in area | |
| CN112697497A (en) | Loop bar type in-situ lateral soil sampling device | |
| CN111980044A (en) | Dewatering well structure for separating adjacent aquifers and method for backfilling outside well wall | |
| CN211740279U (en) | Simple portable device for measuring water yield and water pressure of common hole seam | |
| JP2000065659A (en) | Pore water-measuring instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: B702/707/709, university entrepreneurship Park, high tech Zone, No. 99, University Road, high tech Industrial Development Zone, Xuzhou, Jiangsu Province, 221000 Patentee after: China Mining Geological Technology Research Institute (Jiangsu) Co.,Ltd. Country or region after: China Address before: 221116 B702 / 707 / 709, University Pioneer Park, high tech Industrial Development Zone, No. 99, Daxue Road, Xuzhou City, Jiangsu Province Patentee before: Xuzhou Zhongkuang geoscience Geotechnical Engineering Technology Co.,Ltd. Country or region before: China |