CN109267961A - A kind of water pressure test in borehole multichannel conversion quick pressure releasing device and its pressure relief method - Google Patents
A kind of water pressure test in borehole multichannel conversion quick pressure releasing device and its pressure relief method Download PDFInfo
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- CN109267961A CN109267961A CN201811308375.9A CN201811308375A CN109267961A CN 109267961 A CN109267961 A CN 109267961A CN 201811308375 A CN201811308375 A CN 201811308375A CN 109267961 A CN109267961 A CN 109267961A
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- core pipe
- capsule
- hole
- pressure
- water
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- 238000012360 testing method Methods 0.000 title claims abstract description 140
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002775 capsule Substances 0.000 claims abstract description 134
- 238000005553 drilling Methods 0.000 claims abstract description 90
- 238000007789 sealing Methods 0.000 claims abstract description 75
- 208000005189 Embolism Diseases 0.000 claims abstract description 43
- 210000004907 gland Anatomy 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims description 56
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 238000010586 diagram Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 239000003673 groundwater Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 108091006146 Channels Proteins 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 239000003292 glue Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000011218 segmentation Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 208000004880 Polyuria Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000035619 diuresis Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/117—Detecting leaks, e.g. from tubing, by pressure testing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a kind of water pressure test in borehole multichannels to convert quick pressure releasing device.It includes that lower core pipe set is coupled mouth, core pipe sleeve is coupled mouth, upper core pipe set is coupled mouth and upper core pipe hole and lower core pipe hole in core pipe；Core pipe set top is equipped with gland, bottom is equipped with embolism connector, and embolism upper end of joint is provided with the first connector being connected to core pipe set, lower end is provided with the second connector；Gland is stretched out in core pipe upper end upwards, and core pipe lower end extends downwardly core pipe set and is located in embolism connector；There is sealing element to be set between core pipe and core pipe set；There is upper core pipe set to be coupled mouth, core pipe sleeve connection mouth and lower core pipe set connection mouth to be set in turn on sealing element from top to down, core pipe puts on the core pipe set drainage hole for being equipped with and being connected to drilling.The present invention has the advantages that simplifying piping installation, capsule sealing is reliable, and the quick and complete release of capsule facilitates.The invention also discloses a kind of pressure relief methods of water pressure test in borehole multichannel conversion quick pressure releasing device.
Description
Technical field
The present invention relates to water pressure test in borehole technical fields, more specifically say it is a kind of water pressure test in borehole multichannel turn
Change quick pressure releasing device.More specifically say it is a kind of water pressure test in borehole sealing embolism suitable for underground water great burying condition
Quick pressure releasing device.It more specifically says it is suitable for the general packer permeability test of water conservancy and hydropower geological drilling and the examination of deep hole high pressure water injection
A kind of water pressure test in borehole multichannel conversion quick pressure releasing device tested.The invention further relates to a kind of water pressure test in borehole multichannels
Convert the pressure relief method of quick pressure releasing device.
Background technique
Water pressure test in borehole is a kind of rock mass original position permeability test carried out in drilling, and main task is measurement rock mass
Water penetration provides basic document to evaluate the Penetration Signature of rock mass.
Water pressure test in borehole has been widely applied to engineering geological investigation as a kind of rock mass in-situ testing technique, main
Wanting working principle is the test section that drilling is isolated to certain length with embolism, and presses water to the test section, according to pressure and stream
The relationship of amount determines a kind of permeability test in situ of Rock Seepage Character.Embolism is the main of packer permeability test obstruction isolation experiment section
Equipment, by live a large number of experiments, hydraulic type embolism is reliable compared with other types embolism, flexible, but always exists after the test
Release problem is drained, after carrying out packer permeability test especially in the deeper drilling of underground water, since the head in drilling rod is higher, and
Pressure is balanced without correspondingly high level of ground water in drilling, forms biggish head difference inside and outside test section, capsule is by drilling rod
The effect of high water head pressure be in swelling state always, be difficult release reinstatement, easily cause capsule card hole during test
Accident leads to direct losses, even results in whole hole and scraps.
Summary of the invention
The first object of the present invention is to provide for a kind of water pressure test in borehole multichannel conversion quick pressure releasing device, passes through
Up and down motion core pipe makes core pipe hole in core pipe, lower core pipe hole and capsule access opening cooperate and carries out multichannel conversion, realizes glue
Capsule water-filling insulates test section, test pressure water and capsule Quick drainage release, to complete packer permeability test, efficiently solves pressure water examination
It tests middle capsule and is difficult the problem that release causes card hole；The present invention simplifies piping installation, and (a set of drilling rod, which is used as, to be filled and tests public
Instrumentation tubes), capsule sealing is reliable, and the quick and complete release of capsule is convenient, and single tripping in equipment continuously more examination sections successively can press water, grasps
Make simply, labor intensity is small, reduces process, saves the advantages that boring time, save the cost expense up and down, can solve capsule and quickly arrange
The problem of water release can be achieved complete opening in deep hole packer permeability test and uninterruptedly continuously press water purpose.
The second object of the present invention is to provide a kind of release side of water pressure test in borehole multichannel conversion quick pressure releasing device
Method, the invention simplify packer permeability test device, solve deep hole high pressure water injection problem, it can be achieved that deep hole complete opening single multiple spot is flexible
Successively segmentation pressure water, labor intensity is low, is the important breakthrough in drilling technique method.
In order to realize the first purpose of aforementioned present invention, the technical solution of the present invention is as follows: a kind of water pressure test in borehole multi-pass
Quick pressure releasing device is converted in road, including core pipe, the core pipe plug for being set to core pipe lower end and the core pipe set for being placed on core pipe periphery,
It is characterized in that: further including that lower core pipe set is coupled mouth, core pipe sleeve is coupled mouth, upper core pipe set is coupled mouth and upper in core pipe
Core pipe hole and lower core pipe hole；Core pipe set top is equipped with gland, bottom is equipped with embolism connector, and embolism connector is connected with core pipe set,
Embolism connector is in hollow structure, and embolism upper end of joint is provided with the first connector being connected to core pipe set, lower end is provided with second
Connector；
Core pipe upper end stretches out gland upwards and is connected with reducer union, and core pipe lower end extends downwardly core pipe set and is located at bolt
It fills in connector；There is sealing element to be set between core pipe and core pipe set；
Core pipe is put on equipped with capsule access opening, is had upper core pipe set to be coupled mouth, core pipe sleeve connection mouth and lower core pipe set and is coupled
Mouth is set in turn on sealing element from top to down, and core pipe puts on the core pipe for being equipped with and drilling and be connected to and covers drainage hole, and upper core pipe set joins
Knot mouth is connected with core pipe set drainage hole；
There is capsule disengaging water swivel to be set to the side wall lower ends of core pipe set and is located at below capsule access opening.
In the above-mentioned technical solutions, lower core pipe set is coupled mouth, core pipe sleeve is coupled mouth, is equipped in upper core pipe set connection mouth
Antidrag sleeve, antidrag sleeve are set on core tube wall.
In the above-mentioned technical solutions, there is spacer sleeve to be set on sealing element, spacer sleeve be set to core pipe set be coupled mouth with
Core pipe sleeve is coupled between mouth.
In the above-mentioned technical solutions, upper core pipe set is coupled mouth, core pipe sleeve is coupled mouth, lower core pipe set is coupled mouth and spacer sleeve
It is arranged circumferentially in the periphery of core pipe；There is gland to be fixedly connected on core pipe set upper side by gland holding screw.
In the above-mentioned technical solutions, lower core pipe hole and upper core pipe hole are in arranged for interval, and core pipe lower part is equipped with core pipe return bullet
Spring and core pipe position adjusting nut；The core pipe position adjusting nut being placed in core pipe is located at below core pipe return spring and is located at
Core pipe plug upper end.
In the above-mentioned technical solutions, the distance between lower core pipe hole and upper core pipe hole are less than upper core pipe set and are coupled mouth and lower core
Pipe sleeve is coupled the distance between mouth.
In the above-mentioned technical solutions, the first connector is placed on the lower end connector outer wall of core pipe set, and core pipe outer diameter is less than
Core pipe covers lower end connector internal diameter, is provided with intercommunicating pore in the second connector；Capsule access opening includes drainage hole and paddle hole,
Drainage hole is located above paddle hole, and drainage hole is corresponding with core pipe sleeve connection mouth, and paddle hole is coupled mouth with lower core pipe set
It is corresponding；Drainage hole, paddle hole are connected to capsule disengaging water swivel by pipeline.
In the above-mentioned technical solutions, sealing element is V-shaped seal ring group.
In the above-mentioned technical solutions, upper core pipe hole is in cross；Lower core pipe hole is in cross.
In order to realize the second purpose of aforementioned present invention, the technical solution of the present invention is as follows: a kind of fields water injection tries
Test the pressure relief method of multichannel conversion quick pressure releasing device, characterized by the following steps:
Step 1: multichannel conversion quick pressure releasing device is installed on sealing capsule, and drilling rod is connected in reducer union,
Between sealing capsule and capsule access opening by high-pressure hose connect, by drilling cramp, pressure sensor, observational record system, water pump,
Pressure gauge, multichannel conversion quick pressure releasing device and the pressing water test full set installation diagram completion connection of sealing capsule are ready, at this moment
The core pipe of multichannel conversion quick pressure releasing device is in original state, and the lower core pipe hole in pipe passage is directed at lower core pipe set and is coupled
Mouth simultaneously passes in and out water swivel and sealing capsule shape into channel with the paddle hole of capsule access opening and capsule, and sealing capsule is that water-filling is pre-
Standby state, switches on the pump and send water to pressurize to pipeline, and sealing capsule gradually inflates, and water-aspirator pressure meter reading is stablized up to 10~15MPa
Afterwards, sealing capsule water-filling is completed；
Step 2: the inflation of sealing capsule terminates, and two sealing capsules are close to the hole wall of drilling, and packer permeability test section passes through inflation
And two sealing capsules for being close to borehole wall are isolated with upper and lower hole section, at this moment water-aspirator pressure meter reading is still kept stable, operation
Drilling rod is moved down about 8cm by drilling machine, and multichannel converts the core pipe downlink in quick pressure releasing device, and lower core pipe hole is coupled with lower core pipe set
Mouth is isolated and is connected with embolism connector, i.e. closing sealing capsule embolism intake tunnel, opens packer permeability test segment interface, and connection is pressed
Water test section；Water-aspirator pressure meter reading will appear short time interval decline when being just switched on packer permeability test section, then rises, adjusts simultaneously
Water-aspirator pressure reads the pressure to needed for testing and keeps stablizing, and packer permeability test section, which blocks, to be completed；Confirm through pressure testing, is transferred to pressure water examination
Test the stage；
Step 3: after packer permeability test, stop water pump water supply pressurization, open ground distributor drain valve, make the note in drilling rod
Water communicates pressure release with atmosphere by drain valve, after stable water pressure in drilling rod, above mentions drilling rod about 8cm, and at this moment multichannel conversion is fast
Core pipe in fast pressure relief device goes upward to the lower core pipe hole in pipe passage and is directed at lower core pipe set connection mouth, at this moment packer permeability test section
Interface closes, connects lower core pipe set connection mouth, and high pressure water pressure release in capsule restores state in relative relaxation；
Step 4: when drilling is deep, within 100 meters, when level of ground water is higher, head pressure is not high, in capsule internal pressure and hole
Pressure is of substantially equal, and capsule quickly can voluntarily restore, and drilling machine can be operated and above mention or lowering drill pipes, and facility is transferred to as needed in hole
Next test section continues another optional test lower section in hole by aforesaid operations and tests, and at this moment multichannel converts fast pressure relief in hole
Device is in original state, test is switched on the pump since step 1 to capsule bath pressurization；
When drilling is deep at 100 meters or more or even 1000 meters, brill water level in borehole is very low, and water column pressure makes capsule still in drilling rod
Inflation, capsule are still close to the hole wall of drilling, and capsule is difficult to shrink or restore undesirable and actuating capsule is caused to be hampered, continues above to mention
Drilling rod about 8cm makes the core pipe return spring uplink in core pipe compressing embolism connector, and at this moment upper core pipe hole and core pipe sleeve are coupled
Mouth forms channel with sealing capsule, drilling rod and drilling, and head passes through connection mouth connection on the outside of upper core pipe set connection mouth in instrumentation tubes
Drill fast pressure relief, while packer permeability test section is discharged in drilling with channel, sealing capsule fast pressure relief retraction, sealing capsule and brill
Hole hole wall forms gap and relaxes；Sealing capsule is in free movement state, and multichannel is converted under the effect of core pipe return spring
Quick pressure releasing device voluntarily restores to original state；
Step 5: repeating aforesaid operations, until completing other sections of packer permeability tests of drilling, repeats Experimental Comparison when necessary,
It can also be compared with conventional roof pressing type packer permeability test numerical value.
The present invention has the advantage that
(1) present invention effectively can arbitrarily switch pipe passage as required, highly reliable；Leakproofness of the present invention is strong, can
Sealing effect is adjusted, using rubber plug plugging effect after apparatus of the present invention is good, segregation is good, capsule freely restores form quickly；
Using filling, pressing aquaporin independent, beating around card hole phenomenon, directly often occur in steel whip sebific duct and drilling rod misoperation for prior art test
Connecing leads to equipment scrapping and drilling scrap event occurs, and does not occur such situation using the method for the present invention；Multichannel of the present invention
Quick pressure releasing device is converted, the water inlet that lower core pipe hole is cooperatively formed with sealing capsule access opening is first passed through when carrying out packer permeability test
Channel makes its expansion be close to hole wall, carries out packer permeability test after insulating test section, after packer permeability test to the intracapsular water-filling of water-stop glue
Core pipe is proposed upwards, sealing is made by the drainage channel that upper and lower core pipe hole and core pipe cover connector, core pipe set lateral port cooperatively forms
Capsule Quick drainage release efficiently solves capsule in packer permeability test and is difficult the problem that release causes card hole；
(2) core pipe of the present invention can be up and down in core pipe covers, and fills-test-embolism capsule pressure release, core pipe set to realize
It is equipped with upper core pipe set connection mouth, core pipe sleeve is coupled mouth, and lower core pipe set is coupled mouth and capsule interface, is able to cooperate core pipe and realizes and leads to
Road switching, to complete from filling the conversion of capsule channel-examination section channel-draining pressure release passage, wherein upper core pipe set be coupled on the outside of mouth with
Drilling is connected, and realizes experimental system pressure release；Core pipe set, lower joint test rubber plug, hollow structure are connected on embolism connector, and core is provided
The control of pipe axis uplink and downlink and offer test waterflood path；The present invention keeps core pipe hole up and down and capsule logical by up and down motion core pipe
Road hole, which cooperates, carries out multichannel conversion, realizes capsule water-filling packing test section, test pressure water and capsule Quick drainage release,
To complete packer permeability test, sealing of the present invention is reliable, and release is convenient, easy to operate, can solve the difficulty of capsule Quick drainage release
Topic can be achieved complete opening contiguous segmentation especially in deep hole packer permeability test and press water；
(3) using multichannel of the present invention conversion quick pressure releasing device in packer permeability test, timeliness is high, labor intensity is low, safety
Reliably, the generation of card plug accident is avoided；One section 500 is done using pressurising sebific duct above and below the prior art and two casing pipeline equipment of drilling rod
The pressure water of metre hole depth needs 4 hours；And the method for the present invention completion pressure water experiment is used only to need 2 hours, timeliness raising 50%, and
Securely and reliably, do not occur card plug accident；
(4) apparatus of the present invention mainly solve that underground water buried depth in gun drilling, especially km grade extra-deep hole drilling is big, inside and outside water
Sealing capsule Quick drainage release problem during water pressure test in borehole under head height pressure differential；
(5) apparatus of the present invention assembly is small in size, light-weight, top jointed rod, and lower part connects test joint on double embolisms, peace
Dress is convenient, is fixed in core pipe casing wall into drainage channel, and processing and fabricating is simple, need to only pass through during water pressure test in borehole
Up and down motion core pipe makes core pipe paddle hole and capsule paddle hole cooperate and carries out multichannel conversion, so that it may realize to glue
Mechanical wear problem is also not present in capsule rapid water filling and draining release, the more convenient operation compared with other similar device, and one
It after section packer permeability test, can be self-healing by the core pipe return spring of bottom of device to original state, convenient for continuing lower section
Test；The present invention can be grouped into double plugs as desired by (high pressure) hose, realize that one-step pore-creating, complete opening continuous multi-stage press water examination
It tests, especially suitable for being conducive to improve existing using the continuous quick packer permeability test of drilling multistage after rope drilling technology drilling
Exploration and experiment work efficiency, can be effectively practical to the conventional water-pressure test of hydraulic and hydroelectric engineering and the high pressure pressure of deep hole
In water test；
(6) strong applicability of the present invention, suitable for the conventional pressure water of hydraulic and hydroelectric engineering, 1000 meters of deep holes and high pressure water injection,
Complete opening contiguous segmentation presses water, grout hole, the neck such as lateral loading test and other engineering geology permeability tests in Hydraulic fracturing test, hole
Domain.
Detailed description of the invention
Fig. 1 is packer permeability test full set installation diagram of the present invention.
Fig. 2 is filled state schematic diagram of the present invention.
Fig. 3 is sectional view at the spacer sleeve in Fig. 2.
Fig. 4 is sectional view at capsule access opening in Fig. 2 and lower core pipe hole.
Fig. 5 is to invent real trystate schematic diagram.
Fig. 6 is depressurization phase schematic diagram of the present invention.
Fig. 7 is work structure diagram of the present invention.
Fig. 8 is that sealing capsule water-filling in hole of the present invention swells status diagram.
1- reducer union in figure, 2- core pipe, 3- gland holding screw, 4- gland, 5- core pipe set, the set draining of 5.1- core pipe
Hole, 6- sealing element, 7- spacer sleeve, 8- capsule access opening, 8.1- drainage hole, 8.2- paddle hole, 9- capsule pass in and out water swivel,
10- embolism connector, the first connector of 10.1-, the second connector of 10.2-, 10.21- intercommunicating pore, 11- core pipe plug, 12- core pipe
Position adjusting nut, 13- core pipe return spring, core pipe hole under 14-, the upper core pipe hole 15-, core pipe set is coupled mouth under 16-, in 17-
Core pipe set is coupled mouth, and the upper core pipe set of 18- is coupled mouth, 19- antidrag sleeve, and 20- multichannel converts quick pressure releasing device, 21- water-stop glue
Capsule, the first filling port 21.1-, the second filling port 21.2-, 22- packer permeability test section, 23- water pump, 24- water-aspirator pressure table, 25- are bored
Hole, 26- drilling rod, 27- drilling cramp, 28- pressure sensor, 29- observational record system, 30- high-pressure hose, 31- water-stop glue capsule-core pipe,
32- embolism tests floral tube.
Specific embodiment
The performance that the invention will now be described in detail with reference to the accompanying drawings, but they and do not constitute a limitation of the invention, only
It is for example.Keep advantages of the present invention more clear by explanation simultaneously and is readily appreciated that.
Refering to known to attached drawing: a kind of water pressure test in borehole multichannel converts quick pressure releasing device, including core pipe 2, is set to
The core pipe plug 11 of 2 lower end of core pipe and the core pipe set 5 for being placed on 2 periphery of core pipe further include that lower core pipe set is coupled mouth 16, core pipe sleeve
It is coupled mouth 17, upper core pipe set is coupled mouth 18 and upper core pipe hole 15 and lower core pipe hole 14 in core pipe 2；5 top of core pipe set
It is equipped with embolism connector 10 equipped with gland 4, bottom, embolism connector 10 is connected with core pipe set 5, and embolism connector 10 is in hollow structure,
10 upper end of embolism connector is provided with for being provided with 5 the first connector 10.1 for being connected to of core pipe set, lower end and being connected to test section
Two connectors 10.2；
2 upper end of core pipe stretches out gland 4 upwards and is connected with reducer union 1,2 lower end of core pipe extend downwardly core pipe set 5 and
In embolism connector 10；There is sealing element 6 to be set between core pipe 2 and core pipe set 5；
Core pipe set 5 is equipped with capsule access opening 8, has upper core pipe set to be coupled mouth 18, core pipe sleeve connection mouth 17 and lower core pipe
Set is coupled mouth 16 and is set in turn on sealing element 6 from top to down, and core pipe set 5 is equipped with the core pipe set drainage hole being connected to drilling 25
5.1, upper core pipe set is coupled mouth 18 and is connected with core pipe set drainage hole 5.1, realizes pressure relief drain after the test；
There is capsule disengaging water swivel 9 to be set to the side wall lower ends of core pipe set 5 and is located at 8 lower section of capsule access opening.
Lower core pipe set is coupled mouth 16, core pipe sleeve is coupled mouth 17, is equipped with antidrag sleeve 19 in upper core pipe set connection mouth 18, subtracts
Resistance set 19 is set on 2 outer wall of core pipe, and antidrag sleeve is hindered for reducing opposite sliding between core pipe 2 and core pipe set 5 and seal assembly 6
Power reaches good sealing effect, prolongs the service life.
There is spacer sleeve 7 to be set on sealing element 6, spacer sleeve 7 is set to core pipe set connection mouth 18 and is coupled with core pipe sleeve
Between mouth 17, spacer sleeve is coupled the adjusting of the distance between mouth with core pipe set to provide core pipe mantle cavity inner seal liner.
Upper core pipe set is coupled mouth 18, core pipe sleeve is coupled mouth 17, lower core pipe set is coupled mouth 16 and spacer sleeve 7 is arranged circumferentially
In core pipe 2 periphery and be successively arranged above and below (as shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6), mutually separated concord is made with reaching
Upper core pipe hole is coupled mouth connection and the purpose effectively separated as needed with upper core pipe set；There is gland 4 solid by gland holding screw 3
Surely it is connected to core pipe and covers 5 upper ends.
Lower core pipe hole 14 and upper core pipe hole 15 are in arranged for interval, and 2 lower part of core pipe is equipped with core pipe return spring 13 and core pipe position
Set adjusting nut 12；The core pipe position adjusting nut 12 being placed in core pipe 2 is located at 13 lower section of core pipe return spring and is located at core pipe
11 upper end of plug, to adjust multichannel conversion quick pressure releasing device end plate, to reach multichannel conversion fast pressure relief dress
Core pipe is set under the conditions of different loads, correct location status can be in, improve the reliability of working condition.
The distance between lower core pipe hole 14 and upper core pipe hole 15, which are less than upper core pipe set and are coupled mouth 18 and cover with lower core pipe, is coupled mouth
The distance between 16, connection mouth 18, upper core pipe hole 15 are covered according to upper core pipe and are coupled mouth 16 and 14 phase of lower core pipe hole with lower core pipe set
Mutually isolation is needed with connection and is designed, and ensures to be effectively isolated section to reach, and prevents from mutually going here and there pressure release purpose.
First connector 10.1 is placed on the lower end connector outer wall of core pipe set 5, and 2 outer diameter of core pipe is less than core pipe and covers 5 lower ends
Connector internal diameter is provided with intercommunicating pore 10.21 in the second connector 10.2, multichannel conversion fast pressure relief dress predominantly of the present invention
The core pipe axis set provides lower part operating room and lower capsule examination section connection needs, with realize drilling rod, by core pipe axis hole through connecing
Head and examination section connection, are reached for examination section water supply purpose；Capsule access opening 8 includes drainage hole 8.1 and paddle hole 8.2, drainage hole
8.1 are located at 8.2 top of paddle hole, and drainage hole 8.1 is corresponding with core pipe sleeve connection mouth 17, paddle hole 8.2 and lower core pipe
It is corresponding that set is coupled mouth 16；Drainage hole 8.1, paddle hole 8.2 are connected to capsule disengaging water swivel 9 by pipeline, drainage hole 8.1
Main to provide High Pressure Drain channel, paddle hole 8.2 can provide capsule water-filling again and can provide capsule just draining, it is therefore intended that for examination
It tests capsule channel and water inlet is not only provided, but also can effectively drain completely.
Sealing element 6 is V-shaped seal ring group, and seal ring assembly is cooperation core pipe axis 2, core pipe set 5, spacer sleeve 7, antidrag sleeve 19
Etc. associated components effective cooperation, reaching core pipe axis can effectively slide but also effectively seal at elevated pressures up and down in core pipe set
Purpose.
Upper core pipe hole 15 is in cross；Lower core pipe hole 14 in cross, 14 aperture of upper core pipe hole 15 and lower core pipe hole it is big
Small and arrangement mainly determines that upper core pipe hole 15 and lower core pipe hole 14 are generally in ten according to the size of the outer diameter of device and core pipe
Font, can also be in Chinese character pin-shaped or porous arrangement type.
Core pipe material of the present invention is high-strength stainless steel, and tension, finish, processing cooperation precision meet actual demand；
Core pipe machining accuracy of the present invention is high, pressure spring and end plate adaptability are preferable.
There is the first filling port 21.1 to be set to 21 top of sealing capsule, there is the second filling port 21.2 to be set under sealing capsule 21
Portion；30 one end of high-pressure hose is connected on capsule access opening 8, the other end is connected on the first filling port 21.1, the second filling port
21.2 can be used for connecting the filling port on another sealing capsule 21；
There is water-stop glue capsule-core pipe 31 to be connected to 10 lower end of embolism connector and be connected with the embolism connector 10, water-stop glue
31 lower end of capsule-core pipe passes through sealing capsule 21 and is connected with embolism test floral tube 32；Embolism test 32 lower end of floral tube can be used for
Connect another sealing capsule 21 (as shown in Fig. 1, Fig. 7, Fig. 8).
Refering to known to attached drawing: a kind of pressure relief method of water pressure test in borehole multichannel conversion quick pressure releasing device,
Include the following steps:
Step 1: multichannel conversion quick pressure releasing device 20 is installed on sealing capsule 21, drilling rod 26 is connected to variable diameter
On connector 1, connected between sealing capsule 21 and capsule access opening 8 by high-pressure hose 30；
Drilling cramp 27, pressure sensor 28, observational record system 29, water pump 23, pressure gauge 24, multichannel conversion are quickly unloaded
Pressure device 20 and sealing capsule 21 are ready (as shown in Figure 1, Figure 7 shows) by the completion connection of packer permeability test full set installation diagram, at this moment multi-pass
The core pipe 2 of road conversion quick pressure releasing device is in original state (as shown in Figure 2, Figure 3, Figure 4), the lower core pipe hole in pipe passage
14, which are directed at lower core pipe set, is coupled mouth 16 and passes in and out water swivel 9 and sealing capsule with the paddle hole of capsule access opening 8.2 and capsule
21 form channels, and sealing capsule 21 is water-filling readiness, switch on the pump and 23 send water to pressurize to pipeline, sealing capsule 21 gradually fills
Swollen, after the reading of water-aspirator pressure table 24 is stablized up to 10~15MPa, 21 water-filling of sealing capsule completes (as shown in Figure 8)；
Step 2: the inflation of sealing capsule 21 terminates, and two sealing capsules 21 are close to the hole wall of drilling 25, packer permeability test section 22
Two sealing capsules 21 by inflating and being close to 25 hole walls of drilling are isolated with upper and lower hole section, and at this moment water-aspirator pressure table 24 is read still
It keeps stablizing, drilling rod 26 is moved down about 8cm to Fig. 5 state by operation drilling machine, and multichannel is converted under the core pipe 2 in quick pressure releasing device
Row, lower core pipe hole 14 are isolated with lower core pipe set connection mouth 16 and connect with embolism connector 10, i.e. closing sealing capsule embolism water inlet
22 interface of packer permeability test section is opened in channel, connects packer permeability test section 22；Water-aspirator pressure table 24 is read when being just switched on packer permeability test section 22
Number will appear short time interval decline, then rise, while adjusting water-aspirator pressure and reading the pressure to needed for testing and keep stablizing, pressure
Water test section 22, which blocks, to be completed；Confirm through pressure testing, is transferred to the packer permeability test stage；
Step 3: after packer permeability test, stop the water supply pressurization of water pump 23, open land drainage valve, make in drilling rod 26
Water filling by drain valve communicates pressure release with atmosphere, after stable water pressure in drilling rod 26, above mentions the about 8cm of drilling rod 26 to Fig. 2 state, this
When multichannel conversion quick pressure releasing device 20 in core pipe 2 go upward to the lower core pipe hole 14 in pipe passage and be directed at lower core pipe set connection
Mouth 16 is tied, core pipe set is coupled mouth 16 under at this moment 22 interface of packer permeability test section is closed, connected, and high pressure water pressure release in capsule is in phase
To relaxation recovery state；
Step 4: when drilling 25 is deep within 100 meters, when level of ground water is higher, head pressure is not high, capsule internal pressure and hole
Interior pressure is of substantially equal, and capsule quickly can voluntarily restore, and drilling machine can be operated and above mention or lowering drill pipes, and facility turns as needed in hole
Enter next test section, continues another optional test lower section in hole by aforesaid operations and test, at this moment multichannel conversion is quickly unloaded in hole
Pressure device is in Fig. 2 state, and test switches on the pump 23 to capsule bath pressurization since step 1；
When drilling 25 is deep at 100 meters or more or even 1000 meters, water level is very low in drilling 25, and water column pressure makes capsule in drilling rod
Still it inflating, capsule is still close to the hole wall of drilling 25, and capsule is difficult to shrink or restore undesirable and actuating capsule is caused to be hampered, this
Shi Caiyong multichannel conversion quick pressure releasing device 20 of the present invention implements pressure relief drain operation, continues above to mention the about 8cm of drilling rod 26, makes core
Pipe 2 oppresses 13 uplink of core pipe return spring in embolism connector 10, and at this moment upper core pipe hole 15 and core pipe sleeve are coupled mouth 17 and stop
Capsule with diuresis promoting function 21, drilling rod 26 and drilling 25 form channel (as shown in Figure 6), and head is covered by upper core pipe and is coupled outside mouth 18 in instrumentation tubes
Side connection mouth connection 25 fast pressure reliefs of drilling, while packer permeability test section 22 is discharged in drilling 25 with channel, sealing capsule 21 is quick
Release retraction, sealing capsule 21 form gap with 25 hole walls of drilling and relax；Sealing capsule 21 is in free movement state, in core
Pipe return spring 13 acts on lower multichannel conversion quick pressure releasing device 20 and voluntarily restores to original state, as shown in Figure 2；
Step 5: repeating aforesaid operations, until completing 25 other sections of packer permeability tests of drilling, repeats test pair when necessary
Than that can also be compared with conventional roof pressing type packer permeability test numerical value.
In order to more clearly illustrate a kind of water pressure test in borehole multichannel conversion fast pressure relief of the present invention
Device and its pressure relief method are compared with the existing packer permeability test using hydraulic type embolism blocks pressure relief device and its pressure relief method
Possessed advantage, staff are compared both technical solutions, and two kinds of technical solutions are applied to certain southwestern water
In the boring test of power station, comparing result is as shown in the table:
Comparing result table
As seen from the above table, a kind of water pressure test in borehole multichannel conversion quick pressure releasing device of the present invention and its release
Method completes one section of drilling compared with the existing packer permeability test using hydraulic type embolism blocks pressure relief device and its pressure relief method
The time required to (drilling is deep at 100 meters to 1000 meters, and it is very low to bore water level in borehole) it is less, required it is artificial it is less, required cost is less,
Drilling efficiency is higher, and complete opening is able to achieve in deep hole packer permeability test and continuously presses that water experiment, capsule embolism will not be made in packer permeability test
The problem of at card hole.
Other unaccounted parts belong to the prior art.
Claims (10)
1. a kind of water pressure test in borehole multichannel converts quick pressure releasing device, including core pipe (2), it is set to core pipe (2) lower end
Core pipe plug (11) and the core pipe set (5) for being placed on core pipe (2) periphery, it is characterised in that: further include lower core pipe set be coupled mouth (16),
Core pipe sleeve is coupled mouth (17), upper core pipe set is coupled mouth (18) and the upper core pipe hole (15) being set on core pipe (2) and lower core pipe
Hole (14)；Gland (4) are equipped at the top of core pipe set (5), bottom is equipped with embolism connector (10), embolism connector (10) and core pipe set (5)
It is connected, embolism connector (10) is in hollow structure, and embolism connector (10) upper end is provided with to be connect with the first of core pipe set (5) connection
Mouth (10.1), lower end are provided with the second connector (10.2)；
Core pipe (2) upper end is stretched out gland (4) upwards and is connected with reducer union (1), and core pipe (2) lower end extends downwardly core pipe set
(5) and it is located in embolism connector (10)；There is sealing element (6) to be set between core pipe (2) and core pipe set (5)；
Core pipe set (5) is equipped with capsule access opening (8), there is upper core pipe set to be coupled mouth (18), core pipe sleeve be coupled mouth (17) and under
Core pipe set is coupled mouth (16) and is set in turn on sealing element (6) from top to down, and core pipe set (5) is equipped with and is connected to drilling (25)
Core pipe covers drainage hole (5.1), and upper core pipe set is coupled mouth (18) and is connected with core pipe set drainage hole (5.1)；
There is capsule disengaging water swivel (9) to be set to the side wall lower ends of core pipe set (5) and is located at below capsule access opening (8).
2. a kind of water pressure test in borehole multichannel according to claim 1 converts quick pressure releasing device, it is characterised in that: institute
State that lower core pipe set is coupled mouth (16), core pipe sleeve is coupled mouth (17), upper core pipe set is coupled in mouth (18) and is equipped with antidrag sleeve (19),
The antidrag sleeve (19) is set on core pipe (2) outer wall.
3. a kind of water pressure test in borehole multichannel according to claim 1 or 2 converts quick pressure releasing device, feature exists
In: there is spacer sleeve (7) to be set on sealing element (6), the spacer sleeve (7) is set to core pipe set and is coupled mouth (18) and core pipe
Set is coupled between mouth (17).
4. a kind of water pressure test in borehole multichannel according to claim 3 converts quick pressure releasing device, it is characterised in that: institute
State core pipe set connection mouth (18), core pipe sleeve is coupled mouth (17), lower core pipe set is coupled mouth (16) and spacer sleeve (7) circumferential direction is set
It is placed in the periphery of core pipe (2)；There are gland (4) to be fixedly connected on core pipe set (5) upper end by gland holding screw (3).
5. a kind of water pressure test in borehole multichannel according to claim 4 converts quick pressure releasing device, it is characterised in that: institute
Lower core pipe hole (14) and upper core pipe hole (15) are stated in arranged for interval, core pipe (2) lower part is equipped with core pipe return spring (13) and core pipe
Position adjusting nut (12)；The core pipe position adjusting nut (12) being placed on the core pipe (2) is located at core pipe return spring (13)
Lower section and be located at core pipe plug (11) upper end.
6. a kind of water pressure test in borehole multichannel according to claim 5 converts quick pressure releasing device, it is characterised in that: institute
It states the distance between lower core pipe hole (14) and upper core pipe hole (15) and less than upper core pipe set is coupled mouth (18) and lower core pipe and covers and be coupled mouth
The distance between (16).
7. a kind of water pressure test in borehole multichannel according to claim 6 converts quick pressure releasing device, it is characterised in that: institute
It states the first connector (10.1) to be placed on the lower end connector outer wall of core pipe set (5), core pipe (2) outer diameter is less than under core pipe set (5)
Hold connector internal diameter；Intercommunicating pore (10.21) are provided in second connector (10.2)；The capsule access opening (8) includes
Drainage hole (8.1) and paddle hole (8.2), drainage hole (8.1) are located above paddle hole (8.2), drainage hole (8.1) and core
Pipe sleeve connection mouth (17) is corresponding, and paddle hole (8.2) is corresponding with lower core pipe set connection mouth (16)；Drainage hole (8.1), disengaging
Water hole (8.2) is connected to capsule disengaging water swivel (9) by pipeline.
8. a kind of water pressure test in borehole multichannel according to claim 7 converts quick pressure releasing device, it is characterised in that: institute
Stating sealing element (6) is sealing ring group.
9. a kind of water pressure test in borehole multichannel according to claim 8 converts quick pressure releasing device, it is characterised in that: institute
Core pipe hole (15) are stated in cross；The lower core pipe hole (14) is in cross.
10. a kind of water pressure test in borehole multichannel described in any claim converts fast pressure relief in -9 according to claim 1
The pressure relief method of device, characterized by the following steps:
Step 1: multichannel conversion quick pressure releasing device (20) is installed on sealing capsule (21), drilling rod (26) is connected to change
It on drive connector (1), is connected between sealing capsule (21) and capsule access opening (8) by high-pressure hose (30), by drilling cramp (27), pressure
Force snesor (28), observational record system (29), water pump (23), pressure gauge (24), multichannel conversion quick pressure releasing device (20)
Complete to connect ready, at this moment multichannel conversion quick pressure releasing device (20) by packer permeability test full set installation diagram with sealing capsule (21)
Core pipe (2) be in original state, lower core pipe hole (14) in pipe passage is directed at lower core pipe set and is coupled mouth (16) and and capsule
Paddle hole (8.2) and the capsule disengaging water swivel (9) of access opening and sealing capsule (21) form channel, and sealing capsule (21) is
Water-filling readiness, switch on the pump (23) send water to pressurize to pipeline, sealing capsule (21) gradually inflates, and water-aspirator pressure table (24) is read
After number is stablized up to 10~15MPa, sealing capsule (21) water-filling is completed；
Step 2: sealing capsule (21) inflation terminates, and two sealing capsules (21) are close to the hole wall of drilling (25), packer permeability test section
(22) it is isolated by two sealing capsules (21) of inflation and abutting drilling (25) hole wall with upper and lower hole section, at this moment water-aspirator pressure table
(24) reading still keeps stable, and drilling rod (26) is moved down about 8cm by operation drilling machine, and multichannel converts the core pipe in quick pressure releasing device
(2) downlink, lower core pipe hole (14) are isolated with lower core pipe set connection mouth (16) and connect with embolism connector (10), i.e. closing sealing
Capsule embolism intake tunnel opens packer permeability test section (22) interface, connects packer permeability test section (22)；It is just switched on packer permeability test section
(22) water-aspirator pressure table (24) reading will appear short time interval decline when, then rise, while adjusting water-aspirator pressure and reading to examination
It tests required pressure and keeps stablizing, packer permeability test section (22), which blocks, to be completed；Confirm through pressure testing, is transferred to the packer permeability test stage；
Step 3: after packer permeability test, stop water pump (23) water supply pressurization, open ground distributor drain valve, make in drilling rod (26)
Water filling pressure release is communicated with atmosphere by drain valve, after drilling rod (26) interior stable water pressure, above mention drilling rod (26) about 8cm, at this moment
Core pipe (2) in multichannel conversion quick pressure releasing device (20) goes upward to the lower core pipe hole (14) in pipe passage and is directed at lower core pipe
Set is coupled mouth (16), and core pipe set is coupled mouth (16) under at this moment packer permeability test section (22) interface is closed, connected, and high pressure water is let out in capsule
Pressure restores state in relative relaxation；
Step 4: when drilling (25) is deep, within 100 meters, when level of ground water is higher, head pressure is not high, in capsule internal pressure and hole
Pressure is of substantially equal, and capsule quickly can voluntarily restore, and drilling machine can be operated and above mention or lowering drill pipes, and facility is transferred to as needed in hole
Next test section continues another optional test lower section in hole by aforesaid operations and tests, and at this moment multichannel converts fast pressure relief in hole
Device (20) is in original state, and test switches on the pump (23) to capsule bath pressurization since step 1；
When drilling (25) is deep at 100 meters or more or even 1000 meters, drilling (25) interior water level is very low, and water column pressure makes capsule in drilling rod
Still it inflating, capsule is still close to the hole wall of drilling (25), and capsule is difficult to shrink or restore undesirable and actuating capsule is caused to be hampered,
Continue above to mention drilling rod (26) about 8cm, makes core pipe return spring (13) uplink in core pipe (2) compressing embolism connector (10), at this moment
Upper core pipe hole (15) and core pipe sleeve are coupled mouth (17), form channel, work with sealing capsule (21), drilling rod (26) and drilling (25)
It manages interior head and is covered by upper core pipe and be coupled connection mouth connection drilling (25) fast pressure relief on the outside of mouth (18), while packer permeability test section
(22) it is discharged in drilling (25) with channel, sealing capsule (21) fast pressure relief retraction, sealing capsule (21) and drilling (25) hole wall
It forms gap and relaxes；Sealing capsule (21) is in free movement state, and multichannel turns under core pipe return spring (13) effect
Quick pressure releasing device (20) is changed voluntarily to restore to original state；
Step 5: repeating aforesaid operations, until completing drilling (25) other sections of packer permeability tests, repeats Experimental Comparison when necessary,
It can also be compared with conventional roof pressing type packer permeability test numerical value.
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| CN201811308375.9A CN109267961B (en) | 2018-11-05 | 2018-11-05 | Multi-channel conversion rapid pressure relief device and method for drilling pressurized water test |
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| CN201811308375.9A CN109267961B (en) | 2018-11-05 | 2018-11-05 | Multi-channel conversion rapid pressure relief device and method for drilling pressurized water test |
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| CN113700969A (en) * | 2021-10-27 | 2021-11-26 | 山东中茂散热器有限公司 | Radiator core leak hunting frock |
| CN113833860A (en) * | 2021-09-23 | 2021-12-24 | 中煤科工集团重庆研究院有限公司 | Capsule sealed water braid |
| CN116952474A (en) * | 2023-07-19 | 2023-10-27 | 长江三峡勘测研究院有限公司（武汉） | Automatic acquisition and water leakage monitoring system for double-plug pressurized water test data |
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