CN114837603B - Drilling pressurized water test plug and system - Google Patents
Drilling pressurized water test plug and system Download PDFInfo
- Publication number
- CN114837603B CN114837603B CN202210580672.9A CN202210580672A CN114837603B CN 114837603 B CN114837603 B CN 114837603B CN 202210580672 A CN202210580672 A CN 202210580672A CN 114837603 B CN114837603 B CN 114837603B
- Authority
- CN
- China
- Prior art keywords
- water
- plug
- drill rod
- pipe
- ring piece
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 186
- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 238000005553 drilling Methods 0.000 title claims abstract description 41
- 238000000429 assembly Methods 0.000 claims abstract description 16
- 230000000712 assembly Effects 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 16
- 238000002474 experimental method Methods 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 239000011435 rock Substances 0.000 description 30
- 230000035699 permeability Effects 0.000 description 11
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 208000005189 Embolism Diseases 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 238000010998 test method 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial 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
- E21B49/008—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 by injection test; by analysing pressure variations in an injection or production test, e.g. for estimating the skin factor
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)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a drilling pressurized water test plug and a system in the technical field of drilling pressurized water tests. The plug comprises: a pressure spring; the center of the ring piece assembly is provided with a threaded through hole, two ring piece assemblies are arranged, and the two ring piece assemblies are fixedly connected to two ends of the pressure spring respectively; the sleeve is sleeved on the periphery of the pressure spring, the sleeve is positioned between the two ring piece assemblies, and two ends of the sleeve respectively abut against opposite surfaces of the two ring piece assemblies; the periphery of the hollow joint is provided with external threads matched with the threaded through holes; the female wire joint, the hollow joint of female wire joint one end matches, and the other end matches with the drilling rod joint. The plug is internally provided with the pressure spring and is externally wrapped with the sleeve, the water stopping effect is good, meanwhile, the hose air (water) supply is not needed, the structure is simple, the operation is simple and convenient, and the test efficiency can be improved.
Description
Technical Field
The invention relates to the technical field of drilling pressurized water tests, in particular to a drilling pressurized water test plug and a system.
Background
The engineering geological investigation needs to know the water permeability of the rock mass, and the main task of the drilling pressurized water test is to measure the water permeability of the rock mass, so that basic data is provided for evaluating the permeability characteristics of the rock mass and designing permeability control measures.
The drilling water pressure test is to plug the wall of a drilling hole by using a plug for a specific test section, isolate the test section, then press water to the section by using a fixed water head, and determine the permeability coefficient of the rock of the test section according to the pressing flow of the water pressure test, the total pressure acting in the test section and the length of the test section.
The existing embolism and water pressing system has the following problems and disadvantages:
(1) The expansion deformation of the embolism is not large enough;
When the water pressure test is carried out, the existing plug generates transverse expansion deformation after being inflated (water) by the plug rubber tube, and the plug extrudes the hole wall to realize the water stopping purpose. However, existing plugs are limited by small hoses (including fittings), and the pressure input is limited, so that too much pressure can cause the hose or fitting to burst. The lateral expansion deformation of the plug is not large enough, the extrusion to the hole wall rock is limited, the crack of the hole wall rock is gradually opened under the action of high-pressure water flow, leakage is generated, and the water stop failure or poor water stop effect of the plug is caused.
(2) Plug size effects, resulting in plug seizing;
In order to be in close contact with the hole wall, the diameter of the existing plug is only slightly smaller than the hole diameter of a drilling hole, and if the rock is complete and the hole wall is smooth, the plug is smooth up and down; however, the rock is developed due to various reasons, the joint cracks are developed, the rock on the hole wall is cracked, the local broken part possibly has the block, and rock powder particles remain and precipitate when drilling, so that after the plug is put in a pressurized water test, the plug is difficult to pull out, the plug is pulled out, or the plug cannot be pulled up, and the whole drilling hole is scrapped.
(3) The plug is provided with a tiny hose, and the hose is easy to wind with a drill rod when being installed and disassembled;
the plug is required to supply air (water) to the hose, when the plug is installed in a pressurized water test, the hose is installed synchronously with the drill rod, after the hose is installed, the drill rod is lengthened one by one, the hose is inevitably rotated in the process of lowering the drill rod and the plug system together, and the hose is easy to wind with the drill rod. In addition, after the pressurized water test is finished, the plug and the drill rod need to be pulled out, and the drill rod can also rotate, so that the winding degree of the hose and the drill rod can be increased.
Disclosure of Invention
The application solves or partially solves the problems existing in the conventional plug in the drilling pressurized water test by providing the plug and the system for the drilling pressurized water test.
The embodiment of the application provides a drilling pressurized water test plug, which comprises the following components:
A pressure spring;
the center of the ring piece assembly is provided with a threaded through hole, two ring piece assemblies are arranged, and the two ring piece assemblies are fixedly connected to two ends of the pressure spring respectively;
the sleeve is sleeved on the periphery of the pressure spring, the sleeve is positioned between the two ring sheet assemblies, and two ends of the sleeve respectively abut against opposite surfaces of the two ring sheet assemblies;
the periphery of the hollow joint is provided with external threads matched with the threaded through holes;
And one end of the female wire connector is matched with the hollow connector, and the other end of the female wire connector is matched with the drill rod connector.
The beneficial effects of the above embodiment are that:
Firstly, the plug is internally provided with the pressure spring, so that the vertical deformation of the plug can be ensured, the plug rubber tube is influenced by vertical compression deformation, transverse expansion deformation is generated, the hole wall is extruded, the plug rubber tube can be closely contacted with the hole wall rock, and rock cracks at the plug can be forced not to be flushed by high-pressure water flow through extrusion of the hole wall rock, so that double water stop is realized, and the plug water stop effect is better. The plug can bear wide deformation, the borne pressure is brought by the upper drill rod and the external drill rod pressurizing device, and the pressure can be adjusted according to the water stopping condition. Because the large deformation of the plug brings better water stopping effect, the water stopping effect of the plug position can be determined only by changing the continuous repeated test of the traditional plug in the past, the test efficiency and the test success rate are improved, and the time and the labor are saved. And each test only needs to detach and replace the sample mounting device in the test system, and other parts do not need to be mounted for the second time, so that the operation is very simple and convenient.
Secondly, built-in pressure spring, outsourcing sheathed tube embolism need not hose air feed (water), and the structure is simpler, can not produce the problem of hose winding drilling rod, and it is more simple and convenient to operate, also not fragile, safe durable. The outer diameter of the drill hole is slightly smaller than the diameter of the drill hole, the drill hole is more convenient to install and pull out, the plug cannot be blocked by rock powder and small rock falling blocks, the test efficiency can be improved, and the drilling and test safety is ensured.
In addition, the multiple sections of plugs are combined, and are connected with each other through the hollow joints, so that the plug length after the combination is adjusted, and plugs required by a pressurized water test can be flexibly configured according to the lithology of the drilled hole.
On the basis of the above embodiments, the present application can be further improved, and specifically, the following steps are provided:
In one embodiment of the present application, the ring assembly includes a first ring, a sealing gasket, and a second ring, the sealing gasket being disposed between the first ring and the second ring. The gasket is typically a rubber gasket to act as a water stop.
In one embodiment of the present application, the sleeve is a rubber tube.
The embodiment of the application also provides a drilling pressurized water experiment system, which comprises: the water supply drill rod, the plug, the flower pipe and the water pressing component are as above, one end of the plug is connected with the water supply drill rod, the other end of the plug is connected with the flower pipe, the water supply drill rod and the flower pipe are all hollow, a water flow channel which is mutually communicated is formed inside the water supply drill rod, the plug and the flower pipe, the water pressing component comprises a water pump and a water tank, a liquid inlet end of the water pump is communicated with the water tank, and a liquid outlet end of the water pump is communicated with the inside of the water supply drill rod.
The beneficial effects of the above embodiment are that: for a single plug drilling test, water is pressed into a water flow channel in the water delivery drill rod through a water pump, the plug seals the hole wall, water overflows from holes on the peripheral surface of the flower pipe, and the test detects the stratum permeability of the flower pipe section. The plug with the built-in pressure spring and the outer sleeve does not need hose air (water), has simpler structure, can not cause the problem that the hose is wound around the drill rod, is simpler and more convenient to operate, is not easy to damage, and is safe and durable. The outer diameter of the drill hole is slightly smaller than the diameter of the drill hole, the drill hole is more convenient to install and pull out, the plug cannot be blocked by rock powder and small rock falling blocks, the test efficiency can be improved, and the drilling and test safety is ensured. Meanwhile, as the large deformation of the plug brings better water stopping effect, the traditional plug in the past is changed to be required to be subjected to repeated test, the water stopping effect of the plug position can be determined, the test efficiency and the test success rate are improved, and time and labor are saved. And each test only needs to detach and replace the sample mounting device in the test system, and other parts do not need to be mounted for the second time, so that the operation is very simple and convenient.
In one embodiment of the application, the drilling water pressure experiment system further comprises a drill rod pressurizing device, wherein the drill rod pressurizing device is used for pressurizing the water delivery drill rod. The plug is pressed to generate wide deformation, the borne pressure is brought by an upper drill rod and an external drill rod pressurizing device, the pressure can be adjusted according to the water stopping condition, and the drill rod pressurizing device can be a hydraulic cylinder and the like as long as the water supply drill rod can be pressurized.
In one embodiment of the application, the water pressing assembly further comprises a three-way flow regulating valve, a water return pipe, a flow meter and a pressure meter, wherein the liquid outlet end of the water pump is connected with the liquid inlet end of the three-way flow regulating valve, the liquid outlet end I of the three-way flow regulating valve is communicated with the interior of the water feeding drill pipe, the liquid outlet end II of the three-way flow regulating valve is communicated with the water tank through the water return pipe, the flow meter is arranged between the three-way flow regulating valve and the water feeding drill pipe, and the pressure meter is used for detecting the water pressure in the water feeding drill pipe. The water pressure is convenient to adjust and detect.
In one embodiment of the application, the drilling and water pressing experiment system further comprises another plug and a supporting drill rod, one end of the flower pipe is connected with the plug, the other end of the flower pipe is connected with the other plug, and one end of the other plug is connected with the flower pipe, and the other end of the other plug is connected with the supporting drill rod. Aiming at a double-plug drilling water pressure test, the bottom of a supporting drill rod is sealed, the upper plug and the lower plug of the flower pipe are sealed to stop water after being stressed, and the water permeability of the rock stratum of the flower pipe section is tested and detected.
The embodiment of the application also provides a drilling pressurized water experiment method, which adopts the drilling pressurized water experiment system and comprises the following steps:
Drilling, wherein the bore diameter of the drilling is matched with the plug;
sequentially placing the flower pipe, the plug and the upper drill rod in the drill hole;
pressing down the drill rod, and stopping water on the wall of the plug extrusion hole;
And carrying out a pressurized water test.
The beneficial effects of the above embodiment are that: the plug with the built-in pressure spring and the outer sleeve does not need hose air (water), has simpler structure, can not cause the problem that the hose is wound around the drill rod, is simpler and more convenient to operate, is not easy to damage, and is safe and durable. Meanwhile, the water stopping effect of the plug position can be determined only by changing the continuous repeated test of the traditional plug in the past, the test efficiency and the test success rate are improved, and time and labor are saved.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
1. The plug is internally provided with the pressure spring, so that the vertical deformation of the plug can be ensured, the plug rubber tube is influenced by vertical compression deformation, transverse expansion deformation is generated, the hole wall is extruded, the plug rubber tube can be caused to closely contact with the hole wall rock, and rock cracks at the plug can be forced not to be flushed away by high-pressure water flow through extrusion of the hole wall rock, so that double water stop is realized, and the plug water stop effect is better.
2. The plug with the built-in pressure spring and the outer sleeve does not need hose air (water), has simpler structure, can not cause the problem that the hose is wound around the drill rod, is simpler and more convenient to operate, is not easy to damage, and is safe and durable. The outer diameter of the drill hole is slightly smaller than the diameter of the drill hole, the drill hole is more convenient to install and pull out, the plug cannot be blocked by rock powder and small rock falling blocks, the test efficiency can be improved, and the drilling and test safety is ensured.
3. Because the large deformation of the plug brings better water stopping effect, the water stopping effect of the plug position can be determined only by changing the continuous repeated test of the traditional plug in the past, the test efficiency and the test success rate are improved, and the time and the labor are saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the structure of a plug in example 1;
FIG. 2 is a schematic diagram of the single plug borehole water pressure experiment system in example 2;
FIG. 3 is a schematic diagram of the structure of the dual plug borehole water pressure experiment system in example 2;
Fig. 4 is a flow chart showing the steps of the borehole water pressure experimental method in example 3.
The hydraulic valve comprises a plug 1, a compression spring 11, a ring piece assembly 12, a ring piece 121, a ring piece one, a sealing gasket 122, a ring piece two, a sleeve 13, a hollow joint 14, a female joint 15, a drill rod joint 16, a water supply drill rod 2, a flowtube 3, a water pump 41, a water tank 42, a three-way flow regulating valve 43, a water return pipe 44, a flow meter 45, a pressure meter 46 and a support drill rod 5.
Detailed Description
The present application is further illustrated below in conjunction with the specific embodiments, it being understood that these embodiments are meant to be illustrative of the application only and not limiting the scope of the application, and that modifications of the application, which are equivalent to those skilled in the art to which the application pertains, will fall within the scope of the application as defined in the appended claims.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples of the invention described and the features of the various embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The technical scheme in the embodiment of the application aims to solve the problems, and the overall thought is as follows:
Example 1:
as shown in fig. 1, a borehole jack plug comprising: the device comprises a pressure spring 11, a ring piece assembly 12, a sleeve 13, a hollow joint 14 and a female wire joint 15;
The center of the ring piece assembly 12 is provided with a threaded through hole, the number of the ring piece assemblies 12 is two, and the two ring piece assemblies 12 are fixedly connected to the two ends of the pressure spring 11 respectively; the sleeve 13 is sleeved on the periphery of the pressure spring 11, the sleeve 13 is positioned between the two ring piece assemblies 12, and two ends of the sleeve 13 respectively abut against opposite surfaces of the two ring piece assemblies 12; the periphery of the hollow joint 14 is provided with external threads matched with the threaded through holes; the female thread joint 15 is matched with the hollow joint 14 at one end and the drill rod joint 16 at the other end.
The ring assembly 12 includes a first ring 121, a sealing gasket 122, and a second ring 123, the sealing gasket 122 being disposed between the first ring 121 and the second ring 123. The gasket 122 is typically a rubber gasket to function as a water stop. The sleeve 13 is typically a rubber tube.
Example 2:
As shown in fig. 2, a drilling pressurized water experimental system, suitable for single plug situations, comprises: the plug 1, the water feeding drill pipe 2, the flower pipe 3, the water pressing assembly and the drill pipe pressurizing device (not shown in the figure) according to embodiment 1, wherein one end of the plug 1 is connected with the water feeding drill pipe 2, the other end is connected with the flower pipe 3, the water feeding drill pipe 2 and the flower pipe 3 are all hollow, the water feeding drill pipe 2, the plug 1 and the flower pipe 3 form mutually communicated water flow channels, the water pressing assembly comprises a water pump 41, a water tank 42, a three-way flow regulating valve 43, a water return pipe 44, a flow meter 45 and a pressure meter 46, the liquid inlet end of the water pump 41 is communicated with the water tank 42, the liquid outlet end of the water pump 41 is connected with the liquid inlet end of the three-way flow regulating valve 43, the liquid outlet end of the three-way flow regulating valve 43 is communicated with the water tank 42 through the water return pipe 44, the flow meter 45 is arranged between the three-way flow regulating valve 43 and the water feeding drill pipe 2, and the pressure meter 46 is used for detecting the water pressure inside the water feeding drill pipe 2. The water pressure is convenient to adjust and detect.
Optionally, as shown in fig. 3, the drilling and water pressing experiment system in the double-plug situation further comprises another plug 1 and a supporting drill rod 5, one end of the flower pipe 3 is connected with the plug 1, the other end is connected with the other plug 1, one end of the other plug 1 is connected with the flower pipe 3, and the other end is connected with the supporting drill rod 5. Aiming at a double-plug 1 drilling water pressure test, the bottom of a supporting drill rod 5 is sealed, the upper plug 1 and the lower plug 1 of the floral tube 3 are sealed for water stop after being stressed, and the water permeability of the floral tube 3 section rock stratum is tested.
A drill rod pressurizing device (not shown) is used to pressurize the water feed drill rod. The plug is pressed to generate wide deformation, the borne pressure is brought by an upper drill rod and an external drill rod pressurizing device, the pressure can be adjusted according to the water stopping condition, and the drill rod pressurizing device can be a hydraulic cylinder and the like as long as the water supply drill rod can be pressurized.
Example 3:
As shown in fig. 4, a borehole water pressure test method, using the borehole water pressure test system as described in example 2, comprises the following steps:
S1, drilling, wherein the bore diameter of the drilling is matched with that of the plug.
Drilling holes for the pressurized water test are preferably drilled by adopting diamond or alloy, and the pore diameter of the drilling holes is matched with that of the plugs.
Test piece selection should first determine the location of the plug. According to the integrity degree of the drilled core, a hole wall section with good rock integrity can be selected as a position for placing the plug.
The plug length is not less than 8 times the diameter of the borehole. The plug is assembled in sections so that the total length of the plug matches the requirements of the pressurized water test.
The test sections are generally not longer than 5m, and adjacent test sections are mutually connected and can be overlapped by a small amount but cannot leak.
And S2, sequentially placing the flower pipe, the plug and the upper drill rod in the drill hole.
And S3, pressing down the drill rod, and sealing water on the wall of the plug extrusion hole.
Before the test, the static water level in the borehole was measured.
After the water level is stable, the drill rod pressurizing device is used for pressing down the drill rod, the drill rod (or the flower pipe) is supported at the bottom of the hole, the upper drill rod is transmitted to the pressure spring in the plug after bearing pressure, the pressure spring is compressed and deformed, the plug rubber pipe is driven to be compressed and deformed and transversely expanded, and the plug is extruded to the hole wall.
Observing the static water level again, and judging that the water stop is effective if the water level is unchanged or has no obvious rising trend; if the water level has obvious rising trend, the pressure of the drill rod needs to be gradually increased, so that the plug compression spring generates larger deformation, and finally the purpose of water stopping is achieved.
S4, carrying out a pressurized water test.
The water pressure test should be performed in three stages of pressure, five stages (i.e., P1- -P2- -P3- -P4- -P5), wherein: p1=p5, p2=p4, p1 < p2 < p3.
During the pressurized water test, the pressurized flow Q is recorded for each pressure stage.
And drawing a P-Q relation curve by using the pressurized water test data result, and determining the curve type of the test section according to the characteristics of the P-Q curve.
The water permeability of the test section adopts a pressure value (P3) and a flow value (Q3) of the third stage according to the formula: q= (Q3)/(L x (P3)) calculates the water permeability of the test section.
Wherein: q- -the water permeability (Lu) of the test piece;
L-test length (m);
q3-calculated flow in the third stage (l/min);
P3- -test section pressure (MPa) in the third stage.
The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:
1. The plug is internally provided with the pressure spring, so that the vertical deformation of the plug can be ensured, the plug rubber tube is influenced by vertical compression deformation, transverse expansion deformation is generated, the hole wall is extruded, the plug rubber tube can be caused to closely contact with the hole wall rock, and rock cracks at the plug can be forced not to be flushed away by high-pressure water flow through extrusion of the hole wall rock, so that double water stop is realized, and the plug water stop effect is better.
2. The plug with the built-in pressure spring and the outer sleeve does not need hose air (water), has simpler structure, can not cause the problem that the hose is wound around the drill rod, is simpler and more convenient to operate, is not easy to damage, and is safe and durable. The outer diameter of the drill hole is slightly smaller than the diameter of the drill hole, the drill hole is more convenient to install and pull out, the plug cannot be blocked by rock powder and small rock falling blocks, the test efficiency can be improved, and the drilling and test safety is ensured.
3. Because the large deformation of the plug brings better water stopping effect, the water stopping effect of the plug position can be determined only by changing the continuous repeated test of the traditional plug in the past, the test efficiency and the test success rate are improved, and the time and the labor are saved.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. A borehole water pressure test plug, comprising:
A pressure spring;
the center of the ring piece assembly is provided with a threaded through hole, two ring piece assemblies are arranged, and the two ring piece assemblies are fixedly connected to two ends of the pressure spring respectively;
the sleeve is sleeved on the periphery of the pressure spring, the sleeve is positioned between the two ring sheet assemblies, and two ends of the sleeve respectively abut against opposite surfaces of the two ring sheet assemblies;
the periphery of the hollow joint is provided with external threads matched with the threaded through holes;
And one end of the female wire connector is matched with the hollow connector, and the other end of the female wire connector is matched with the drill rod connector.
2. The borehole water pressure test plug of claim 1 wherein: the ring piece assembly comprises a ring piece I, a sealing gasket and a ring piece II, wherein the sealing gasket is arranged between the ring piece I and the ring piece II.
3. The borehole water pressure test plug of claim 1 wherein: the sleeve is a rubber tube.
4. A borehole water pressure experiment system, comprising: the water supply drill rod, the plug, the flower pipe and the water pressing assembly according to any one of claims 1-3, one end of the plug is connected with the water supply drill rod, the other end of the plug is connected with the flower pipe, the water supply drill rod and the flower pipe are all hollow, water flow channels which are mutually communicated are formed in the water supply drill rod, the plug and the flower pipe, the water pressing assembly comprises a water pump and a water tank, a liquid inlet end of the water pump is communicated with the water tank, and a liquid outlet end of the water pump is communicated with the water supply drill rod.
5. The borehole water pressure experiment system as set forth in claim 4 wherein: the drill rod pressurizing device is used for pressurizing the water supply drill rod.
6. The borehole water pressure experiment system as recited in claim 5 wherein: the water pressing assembly further comprises a three-way flow regulating valve, a water return pipe, a flow meter and a pressure meter, wherein the liquid outlet end of the water pump is connected with the liquid inlet end of the three-way flow regulating valve, the liquid outlet end of the three-way flow regulating valve is communicated with the inside of the water delivery drill rod, the liquid outlet end of the three-way flow regulating valve is communicated with the water tank through the water return pipe, the flow meter is arranged between the three-way flow regulating valve and the water delivery drill rod, and the pressure meter is used for detecting the water pressure inside the water delivery drill rod.
7. The borehole water pressure experiment system as recited in claim 6 wherein: the pipe is characterized by further comprising another plug and a supporting drill rod, one end of the pipe is connected with the plug, the other end of the pipe is connected with the other plug, one end of the other plug is connected with the pipe, and the other end of the other plug is connected with the supporting drill rod.
8. A drilling water pressure experiment method, which is characterized in that the drilling water pressure experiment system as claimed in any one of claims 4-6 is adopted, comprising the following steps:
Drilling, wherein the bore diameter of the drilling is matched with the plug;
sequentially placing the flower pipe, the plug and the water supply drill pipe into the drill hole;
pressing down the water supply drill rod, and stopping water on the wall of the plug extrusion hole;
And carrying out a pressurized water test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210580672.9A CN114837603B (en) | 2022-05-25 | 2022-05-25 | Drilling pressurized water test plug and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210580672.9A CN114837603B (en) | 2022-05-25 | 2022-05-25 | Drilling pressurized water test plug and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114837603A CN114837603A (en) | 2022-08-02 |
| CN114837603B true CN114837603B (en) | 2024-05-07 |
Family
ID=82573104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210580672.9A Active CN114837603B (en) | 2022-05-25 | 2022-05-25 | Drilling pressurized water test plug and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114837603B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1528896A1 (en) * | 1987-03-02 | 1989-12-15 | Восточно-Сибирский научно-исследовательский институт геологии, геофизики и минерального сырья | Packer |
| CN201397273Y (en) * | 2009-01-22 | 2010-02-03 | 中国水电顾问集团华东勘测设计研究院 | Packer for water pressure tests in large-diameter boreholes |
| CN202039838U (en) * | 2011-04-18 | 2011-11-16 | 中船勘察设计研究院有限公司 | Plug water separator with multiple conical indenter sections |
| CN102561992A (en) * | 2012-01-29 | 2012-07-11 | 山东大学 | Deformation water stopper and grouting plugging process adopting same |
| CN208718648U (en) * | 2018-09-12 | 2019-04-09 | 核工业西南勘察设计研究院有限公司 | A kind of double embolisms of hydraulic type |
| CN110702871A (en) * | 2019-11-14 | 2020-01-17 | 四川省地质工程勘察院集团有限公司 | Underground water layering pumping test modularization 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 |
| CN211397532U (en) * | 2020-01-09 | 2020-09-01 | 李富国 | Plugging device in oil well |
| CN212837765U (en) * | 2020-05-14 | 2021-03-30 | 程守金 | Single-pipe method water pressure tester |
| CN215979343U (en) * | 2021-05-27 | 2022-03-08 | 广东煤炭地质二O二勘探队 | Water stopping device for water pressing test |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110210144B (en) * | 2019-06-05 | 2019-12-27 | 西南石油大学 | Optimization design method for promoting uniform expansion of horizontal well fracturing fracture by temporary plugging agent |
-
2022
- 2022-05-25 CN CN202210580672.9A patent/CN114837603B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1528896A1 (en) * | 1987-03-02 | 1989-12-15 | Восточно-Сибирский научно-исследовательский институт геологии, геофизики и минерального сырья | Packer |
| CN201397273Y (en) * | 2009-01-22 | 2010-02-03 | 中国水电顾问集团华东勘测设计研究院 | Packer for water pressure tests in large-diameter boreholes |
| CN202039838U (en) * | 2011-04-18 | 2011-11-16 | 中船勘察设计研究院有限公司 | Plug water separator with multiple conical indenter sections |
| CN102561992A (en) * | 2012-01-29 | 2012-07-11 | 山东大学 | Deformation water stopper and grouting plugging process adopting same |
| CN208718648U (en) * | 2018-09-12 | 2019-04-09 | 核工业西南勘察设计研究院有限公司 | A kind of double embolisms of hydraulic type |
| CN110702871A (en) * | 2019-11-14 | 2020-01-17 | 四川省地质工程勘察院集团有限公司 | Underground water layering pumping test modularization 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 |
| CN211397532U (en) * | 2020-01-09 | 2020-09-01 | 李富国 | Plugging device in oil well |
| CN212837765U (en) * | 2020-05-14 | 2021-03-30 | 程守金 | Single-pipe method water pressure tester |
| CN215979343U (en) * | 2021-05-27 | 2022-03-08 | 广东煤炭地质二O二勘探队 | Water stopping device for water pressing test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114837603A (en) | 2022-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109469479B (en) | Hydraulic fracturing ground stress measurement system and method | |
| US8176612B2 (en) | Method of energizing a connector | |
| CN201757686U (en) | Hydraulic fracturing crustal stress measuring apparatus | |
| CN110984960B (en) | Top pressure type layered water pumping and injecting test system and method for same-diameter drilling holes | |
| CN111551475B (en) | Portable device and method for rapidly testing permeability of coal seam in situ through layer drilling | |
| CN111878069A (en) | Composite continuous pipe cable oil-water well casing leakage finding system and method | |
| CN107290223B (en) | Use method of hard coal seam water injection weakening experimental device | |
| CN108999586A (en) | Minor diameter rock mass hydrofracturing tests straddle packer | |
| CN114837603B (en) | Drilling pressurized water test plug and system | |
| CN115165701A (en) | Low-water-level drilling single-loop double-plug high-pressure water pressure test device and method | |
| CN106761610A (en) | Layered water injection process tubular column and method thereof | |
| CN110456022A (en) | A kind of dynamic monitoring coal seam reservoirs sensibility and mining control simulation experiment system | |
| EP0150189A1 (en) | Apparatus and method for internally testing a plurality of interconnected pipe sections | |
| CN204344115U (en) | A kind of tubing and casing looks for the omission of examination to seal system | |
| CN217400867U (en) | Borehole water-pressurizing test plug and system | |
| CN201246136Y (en) | Blowout prevention safety valve of oil pumping machine well head | |
| CN212837765U (en) | Single-pipe method water pressure tester | |
| CN114088316B (en) | Fracturing ball sealing performance testing device and operation pressure dynamic regulation and control method | |
| CN109556764B (en) | Measurement and control device of ground stress measurement system | |
| CN115929286A (en) | Sealing detection system and sealing detection method for well drilling casing | |
| CN113756775A (en) | Hydraulic permeability increasing process for large-dip-angle low-permeability coal seam | |
| US8683848B1 (en) | Oil well tubing pressure testing system and method of use | |
| CN208537074U (en) | Very small diameter rock mass hydrofracturing tests double loop mounting rod | |
| CN210919022U (en) | Roof pressure formula layering of same footpath drilling test system that draws water | |
| CN221077712U (en) | Pneumatic pressurized water test device for core drilling of deep hole rope without taking out |
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 |