CN110284876A - A kind of method and apparatus carrying out multiple water-bearing layer bailing tests in single gun drilling - Google Patents
A kind of method and apparatus carrying out multiple water-bearing layer bailing tests in single gun drilling Download PDFInfo
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- CN110284876A CN110284876A CN201910557022.0A CN201910557022A CN110284876A CN 110284876 A CN110284876 A CN 110284876A CN 201910557022 A CN201910557022 A CN 201910557022A CN 110284876 A CN110284876 A CN 110284876A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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Abstract
The invention discloses a kind of to carry out the method and apparatus of multiple water-bearing layer bailing tests in single gun drilling, belong to drilling technique field, the present invention provides carry out multiple water-bearing layer bailing test methods in a kind of single gun drilling, the following steps are included: S1: the packing up and down in purpose water-bearing layer, S2: it reduces and refers to boring aperture variable quantity on immersible pump, S3: observed stage, S4: retraction packer, the present invention provides carry out multiple water-bearing layer bailing test devices in a kind of single gun drilling, it include: drilling packer, hydraulic pressure sensor, secondary meter, data processor, pressure pump or steel cylinder, the tension valve of packer retraction, submersible pump and floral tube drilling rod.Method of the invention is more scientific and reasonable, provides the technology and equipment of a kind of drill not variable diameter or the low cost that can multiple water-bearing layers be carried out in the case where variable diameter with bailing test less, simplify drilling technology, realize the purpose of reduction duration and cost.
Description
Technical field
The present invention relates to drilling technique fields, specially a kind of that multiple water-bearing layer bailing tests are carried out in single gun drilling
Method；
The present invention relates to drilling technique fields, specially a kind of that multiple water-bearing layer bailing tests are carried out in single gun drilling
Device.
Background technique
Drill-hole pumping test be hydrogeologic prospecting, Resource geology exploration, production Supplementary Exploration, water head site geological prospecting and
The necessary engineering of engineer geological prospecting, and the bailing test in the multiple water-bearing layers of single borehole is the most normal in above-mentioned exploration engineering
The engineering seen, all the time, multilayer bailing test are completed in the method for the variable diameter that drills, that is, complete a setting water-bearing layer
Drilling changes a diameter after drawing water, next time casing and sealing, then drills next purpose water-bearing layer with new diameter, opens
Begin primary new bailing test, multiple water-bearing layer bailing tests, and drilling just needs multiple variable diameter and sealing, and such aperture will be very
Greatly, construction technology will be very complicated, and cost will be very high, and the duration will be very long, if sealing fails, Pumping Test Data is just not
Reliably, hydrogeological technical staff just implements mixed pumping test in order to avoid these problems, i.e. single hole latus rectum is taken off to all
The water-bearing layer of dew carries out mixed pumping water, and the thickness or other hydrogeological indexs further according to different water cut layer carry out water operation,
Because the hydrogeological parameter difference of different water cut layer is very big, in addition the water-bearing layer not counted very much, so that the error mistake of data
Greatly, in order to solve this problem, Zhong Mei geology general bureau has developed flow rate log technology and equipment, i.e., in the drilling of mixed pumping water
In the synchronous progress flow velocity well logging of bailing test or chemistry well logging, water operation is then carried out again, but because of impurity convection current measurement in hole
The attachment of well impeller and impeller can not face water (flow) direction method the problems such as so that error of measured data is very big；Chemistry well logging
Because of the convection current in the hole water-bearing layer Nei Ge, water quality mixing is serious, and data error is also very big, and the above problem surveys flow rate log and chemistry
Well technology is unable to get good popularization, therefore Chinese adjusts innings water ring center to have developed the multiple water-bearing layers of single hole again to draw water skill
Art can carry out bailing test to multiple water-bearing layers in the drilling of latus rectum respectively, and it is aqueous that immersible pump must be placed in purpose
Layer place so that the diameter of drilling must it is enough greatly because when requiring lift up to 400~1000 meters, with the increasing of lift,
Immersible pump volume must also increase, and require bore diameter just must be big therewith, in addition the process is more complicated for packer inflation,
Simultaneously in bailing test once accident occurs, the processing time is longer, and the cost for allowing for Geology Drilling in this way is high,
It is not promoted effectively always.
Summary of the invention
The purpose of the present invention is to provide a kind of carried out in single gun drilling the methods of multiple water-bearing layer bailing tests with
Device, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: carrying out multiple water-bearing layers in a kind of single gun drilling
Bailing test method, comprising the following steps:
S1: purpose water-bearing layer roof and floor is insulated, purpose water-bearing layer is avoided to contain with other by the packing up and down in purpose water-bearing layer
The water of water layer mixes, it is ensured that the reliable technology of data, the air pressure expansion technique which changes packer is hydraulic expansion technology, drop
Low process complexity；
S2: reducing and refer to boring aperture variable quantity on immersible pump, previous immersible pump is placed in water-bearing interval draws water and be changed to
The immersible pump of drilling upper sleeve bottom draws water technology, and such purpose water-bearing interval can use common aperture, avoid
To accommodate immersible pump drilling deep aperture is excessive, accident treatment is complicated problem, reduce costs significantly and the duration；
S3: hydraulic pressure sensor is placed in 12-18m on immersible pump by observed stage, and can terrestrial high-frequency sample detecting,
Record and storage, it is distinguished to be, real drawdown data are obtained, so that assessment of water quantity is more accurate；
S4: retraction packer, packer retraction technology for drilling water level buried depth greater than 100m the case where and use
Technology.
Preferably, in S1, according to log sheet, length permeable floral tube identical with purpose water-bearing layer thickness is placed
At purpose water-bearing layer, upper lower packet is respectively placed in the bottom plate and top plate in purpose water-bearing layer, ground hydraulic pump is started, leads to
Crossing high-voltage tube, lower packet is upwards with certain pressure water flooding simultaneously, so that packer inflation is to separate purpose water-bearing layer and other
The hydraulic connection in water-bearing layer.
Preferably, in S2, drilling is crept into an aperture diameter to certain depth, tripping in retaining wall sealing casing, and then one
Secondary property variable diameter to borehole bottom location；It will appear two kinds of different soils of unconsolidated formation and bedrock aquifer when drilling.
Preferably, it in S3, is placed in the hydraulic pressure sensor above immersible pump at about 12--18m and is disposed together with immersible pump
Water level numerical value before and after in hole, detecting, record draws water and in pump process, to determine the variation and stable case of water level.
Preferably, in S4, after the bailing test in certain purpose water-bearing layer, packer will discharge water pressure release, allow envelope
It is shunk every the capsule of device, so that when drilling rod is promoted, capsule is unlikely to be worn by hole wall, but due to certain drilling water levels and ground
Still there is the height difference of 100m or more between face, the remaining head in high-pressure hose still has the pressure greater than 1.0MPa to capsule,
As shown in Fig. 2, shrink capsule can not in place, drilling rod promotion will cause capsule to damage, and two can be used to solve this problem
Kind solution.
A kind of single gun drilling is interior to carry out multiple water-bearing layer bailing test devices, which includes: drilling packer, hydraulic pressure
Sensor, secondary meter, data processor, pressure pump or steel cylinder, the tension valve of packer retraction, submersible pump and floral tube brill
Bar, the drilling packer are made of the reinforcing bar capsule for being wrapped in drilling rod, and capsule is used for storage water or gas, in the upper section of capsule
There is water inlet, connected by high-pressure hose and the pressure pump or steel cylinder in aperture, high-pressure hose is passed through to capsule from pressure pump or steel cylinder
Water-filling or inflation play the purpose of hydraulic connection between isolation purpose water-bearing layer and other water-bearing layers so that capsule expands.
Preferably, the hydraulic pressure sensor, for acquiring water pressure data in initial water level and hole, and by the initial water level
And water pressure data by data cable is transferred to secondary meter in hole.
Preferably, the secondary meter sends monitoring order to the hydraulic pressure sensor by data cable；It receives, deposit
Water pressure data in the initial water level and hole of storage and display hydraulic pressure sensor transmission.
Preferably, water pressure data in hole is converted into water level and restores observation data by the data processor, extensive according to water level
Observation data draw water level recovery curve again, are fitted water level according to water level recovery curve and restore observation curve, are restored according to water level
Observation curve obtains hole wall water level, calculates the depth displacement between initial water level and hole wall water level, obtains drilling water level drawdown value.
Preferably, the sensor, secondary meter and data processor have collectively constituted water-level observation system, described secondary
Instrument includes receiving element, memory element, control element, signal key and display screen, is the commercially available product in market, the tension valve
Method is exactly the tension splice combinations in the underwater a part installation of high-pressure hose, lifts hose after engineering of drawing water is completed, works as drawing
Connector takes off mouth when power reaches a certain numerical value, and the water in hose is flowed out from discharge outlet, and the residual water to drill in the above hose of the water surface disappears
It loses, causes capsule pressure release, shrinks, connector takes off mouth, and there are two types of implementation methods.
Compared with prior art, the beneficial effects of the present invention are: technical method of the invention is more scientific and reasonable, at this
The drill-hole pumping water level test method that invention provides includes the initial water level for obtaining water-bearing layer, i.e., packer packing is before rear, turn on pump
The initial water level in water-bearing layer；Rather than traditional acquisition methods, traditional acquisition methods are that each water-bearing layer is being bored before measurement is drawn water
The mixing water level in hole；When turn on pump is drawn water, the delta data of purpose water-bearing layer water level is obtained；Close the water in purpose water-bearing layer after pumping
Bit recovery data；Restore observation data according to water level, fitting water level restores observation curve；Restore observation curve according to water level, obtains
Take hole wall water level；The depth displacement between initial water level and hole wall water level is calculated, drilling water level drawdown value is obtained；So as to obtain
Accurate drawdown, the water yield for pit calculates and evaluation provides accurate parameter；
It is to separate combination, rather than closely combine that it is submersible pump with floral tube of intaking that the present invention is distinguished, closely
Combination is exactly that water inlet floral tube and submersible pump are all placed in the corresponding position of deep aquifers in hole, makes immersible pump and water inlet floral tube
It is directly connected to, in this way, the aperture at purpose water-bearing layer just very big must could accommodate submersible pump, is greatly increased in this way
The cost of engineering and duration；And separation of the present invention combination be only will water inlet floral tube to be placed in deep aquifers in hole corresponding
Position, as soon as submersible pump is but placed in the bottom that water proof protection casing is opened in drilling, the aperture at such purpose water-bearing layer need not be big
In submersible pump, and common aperture is used, in this way, cost and duration can greatly reduce.
Detailed description of the invention
Fig. 1 is overall flow figure of the invention；
Fig. 2 is remaining head pressure explanatory diagram in drilling drilling water level top hose of the invention；
Fig. 3 is the explanatory diagram that pouring water into borehole of the invention eliminates remaining head pressure；
Fig. 4 is the structure chart and flow chart of drilling multi-aquifer bailing test system of the invention；
Fig. 5 is the structural schematic diagram and working principle diagram of the tension latching method of tension valve of the invention；
Fig. 6 is the structural schematic diagram and working principle diagram of the spring ring method of tension valve of the invention；
Fig. 7 is the matched curve figure that water level of the invention restores observation curve and water level restores observation curve.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Referring to Fig. 1, the present invention provides a kind of technical solution: carrying out multiple water-bearing layers in a kind of single gun drilling and draw water examination
Proved recipe method, comprising the following steps:
S1: purpose water-bearing layer roof and floor is insulated, purpose water-bearing layer is avoided to contain with other by the packing up and down in purpose water-bearing layer
The water of water layer mixes, it is ensured that the reliable technology of data, the air pressure expansion technique which changes packer is hydraulic expansion technology, drop
Low process complexity；
According to log sheet, length permeable floral tube identical with purpose water-bearing layer thickness is placed in purpose water-bearing layer
Upper lower packet, is respectively placed in the bottom plate and top plate in purpose water-bearing layer by place, starts ground hydraulic pump, simultaneously by high-voltage tube
Upward lower packet is with certain pressure water flooding, so that packer inflation is to separate the waterpower in purpose water-bearing layer Yu other water-bearing layers
Connection；
S2: reducing and refer to boring aperture variable quantity on immersible pump, previous immersible pump is placed in water-bearing interval draws water and be changed to
The immersible pump of drilling upper sleeve bottom draws water technology, and such purpose water-bearing interval can use common aperture, avoid
To accommodate immersible pump drilling deep aperture is excessive, accident treatment is complicated problem, reduce costs significantly and the duration；
Drilling is crept into an aperture diameter to certain depth, tripping in retaining wall sealing casing, then disposably variable diameter to end
Hole site；It will appear two kinds of different soils of unconsolidated formation and bedrock aquifer when drilling:
(1) if bailing test is according still further to design tripping in floral tube, retaining wall sealing casing, then to complete to fill out in unconsolidated formation
The outer water proof engineering of gravel, wall；
(2) if it is bedrock aquifer, then open-hole is crept into；It is placed simultaneously with packer, immersible pump is placed in drilling one
The lower part of opening and closing water protection casing, due to be located at drilling upper section sealing protection casing diameter it is big, it is sufficient to place immersible pump with
Meet the requirement that big flow is drawn water, lower section drilling is there is no need to transfer immersible pump and magnifying diameter is crept into, thus significantly
Ground reduces costs and the duration, is also beneficial to possible accident treatment；
S3: hydraulic pressure sensor is placed in 12-18m on immersible pump by observed stage, and can terrestrial high-frequency sample detecting,
Record and storage, it is distinguished to be, real drawdown data are obtained, so that assessment of water quantity is more accurate；
It is placed in the hydraulic pressure sensor above immersible pump at about 12--18m to be placed in hole together with immersible pump, detection, note
Whether the water level numerical value before and after record is drawn water and in pump process is reached with determining the variation and stable case of water level for bailing test
Data are provided to the standard of completion, particularly, sensor obtains water level recovery curve by the high frequency sampling greater than 5 times/s, then leads to
Water level recovery curve searching inflection point is crossed to eliminate traditionally to obtain the elevation at cone of depression center with water level in borehole generation
For the excessive error of cone of depression water level, true waterlevel data is provided for assessment of water quantity；
S4: retraction packer, packer retraction technology for drilling water level buried depth greater than 100m the case where and use
Technology；
After the bailing test in certain purpose water-bearing layer, packer is the pressure release that discharge water, and the capsule of packer is allowed to shrink,
So that when drilling rod is promoted, capsule is unlikely to be worn by hole wall, but due to still have between certain drilling water levels and ground 100m with
On height difference, the remaining head in high-pressure hose still has the pressure greater than 1.0MPa to capsule, as shown in Fig. 2, making glue
Capsule can not be shunk in place, and drilling rod promotion will cause capsule to damage, and two kinds of solutions can be used to solve this problem:
(1) it is resolved to the method for capsule injecting compressed air；
(2) it other than compressed air can be injected, can also be given using to pouring water into borehole or using the method for tension valve
To solve, water flood is exactly that will fill water between the hole outside drilling rod, so that capsule external and internal pressure is balanced, capsule can lean on the bullet of itself
Power is shunk, as shown in figure 3, tension valve method is exactly to install tension connector in the underwater a part of high-pressure hose, is mentioned after closing pump
Hose is drawn, the tension latching of connector is opened when pulling force is more than a certain numerical value or spring ring is disengaged from the groove, and the water in pipeline is from tension valve
The discharge outlet of door excludes, and the residual water to drill in the above hose of the water surface leaks out, and capsule pressure release is shunk；
The present invention provides multiple water-bearing layer bailing test devices are carried out in a kind of single gun drilling, which includes: to bore
The tension valve, latent of hole packer, hydraulic pressure sensor, secondary meter, data processor, pressure pump or steel cylinder, packer retraction
Water power pump and floral tube drilling rod；
The drilling packer is made of the reinforcing bar capsule for being wrapped in drilling rod, and capsule is used for storage water or gas, in capsule
Upper section have water inlet, connected by high-pressure hose and the pressure pump or steel cylinder in aperture, high-pressure hose passed through by pressure pump or steel cylinder
To capsule water-filling or inflation, so that capsule expands, the mesh of hydraulic connection between isolation purpose water-bearing layer and other water-bearing layers is played
's；
The hydraulic pressure sensor, for acquiring water pressure data in initial water level and hole, and will be in the initial water level and hole
Water pressure data is transferred to secondary meter by data cable
The secondary meter sends monitoring order to the hydraulic pressure sensor by data cable；It receives, store and shows
Water pressure data in the initial water level of hydraulic pressure sensor transmission and hole；
Water pressure data in hole is converted into water level and restores observation data, restores to observe according to water level by the data processor
Data draw water level recovery curve, are fitted water level according to water level recovery curve and restore observation curve, and it is bent to restore observation according to water level
Line obtains hole wall water level, calculates the depth displacement between initial water level and hole wall water level, obtains drilling water level drawdown value；
The sensor, secondary meter and data processor have collectively constituted water-level observation system, the secondary meter packet
Receiving element, memory element, control element, signal key and display screen are included, is the commercially available product in market, the tension valve method is exactly
In the tension splice combinations of the underwater a part installation of high-pressure hose, hose is lifted after engineering of drawing water is completed, when pulling force reaches
Connector takes off mouth when a certain numerical value, and the water in hose is flowed out from discharge outlet, and the residual water to drill in the above hose of the water surface disappears, and causes
Capsule pressure release is shunk, and connector takes off mouth, and there are two types of implementation methods:
(1) latching break method: a special latching is installed on the tension valve of high-pressure hose, as shown in figure 5, by figure
With male and female screw tension valve A, B two parts docking, tighten screw, at this time the slidably interface in part A 1. with part B
2. the band sealing ring mouth of a river is docked, so that the water in pipeline can only be flowed to expanded capsule, when ground stops to expansion glue bag pressure water
Afterwards, high-pressure hose is promoted on ground, when drawing tension reaches a certain numerical value, 3. the latching in tension valve is broken, valve
The slidably blocking bolt 4. slide downward of interface 1. end in door, the water route for draining 5. mouth and hose at this time is linked up, in pipeline
Water is discharged from discharge outlet, and the remaining hydraulic pressure in hose disappears, and expanded capsule retracts, and at the same time, the sliding of bolt is stopped to be drawn
The prevention of blocking platform 6. in valve is opened, stops sliding, avoids falling off for hose and repeat this when a water-bearing layer is drawn water
One process；
(2) " ◎ " type spring ring tripping method --- special " ◎ " type spring ring is installed on to the tension of high-pressure hose
In Valve joint, so that spring ring enters semi-circular groove, as shown in Fig. 6 1.；By tension valve A, B two with male and female screw
Divide docking, by screw tightening, at this time 2. the slidably interface in part A is being docked with the 3. mouth of a river with sealing ring of part B, is made
The water obtained in pipeline can only be flowed to expanded capsule, after ground stops pressurizeing to expanded capsule, promote high-pressure hose on ground,
When drawing tension reaches a certain data, 1. the spring ring in tension valve is tightened and is detached from semicircle spring groove, slidably interface
2. retreating, 4. discharge outlet is linked up with the water route of hose, and the water in pipeline is excluded from discharge outlet, at the same time, stops the cunning of bolt 5.
It is dynamic to be stopped sliding by the prevention of blocking platform 6. in tension valve, avoid falling off for hose, when a water-bearing layer is drawn water,
Repeat this process；
Pressure pump or steel cylinder are that capsule provides the device of the bulbs of pressure into hole, if risen using air pressure cause, use steel
Steel cylinder equipped with compressed gas is connect by bottle with the high-pressure hose for leading to expanded capsule, opening cylinder valve can be to expansion
Capsule inflation, capsule expansion can be realized purpose water-bearing layer and be isolated with other water-bearing layers, complete this purpose water-bearing layer bailing test
Afterwards, close the valve of steel cylinder, open the valve for leading to expanded capsule, capsule can pressure release shrink, if using hydraulic expansion,
It is inflated using hydraulic pump to expanded capsule, capsule expansion can be realized purpose water-bearing layer and be isolated with other water-bearing layers, complete this mesh
Water-bearing layer bailing test after, close hydraulic pump valve, start tension valve, capsule can pressure release shrink, pneumatic steel cylinder and liquid
Press pump is option；
In addition, referring to Fig. 4, the present invention provides a kind of single hole multilayer water pumping experiment method methods；This method implements step
It is rapid as follows:
Step 1: in layer position of the ground according to first purpose water-bearing layer in log sheet and hole structure figure, design envelope
Every the position in drill pipe system of device, water inlet floral tube, submersible pump and hydraulic pressure sensor, make them that can accurately reach pre- surely
Fixed position；
Step 2: packer and the combination of water inlet floral tube, submersible pump and sensor combinations one is aqueous layer by layer down toward purpose
Position and water proof retaining wall bottom, that is, will be placed in the bottom in purpose water-bearing layer with the lower packet of high-pressure hose connection under aperture
At plate water barrier, water inlet floral tube is placed at purpose water-bearing layer, and upper packer is placed at the water-resisting roof layer of purpose water-bearing layer, diving electricity
Pump is placed in the bottom that water proof protection casing is opened in drilling one, and hydraulic pressure sensor is placed in above submersible pump at about 12-18m, simultaneously will
Packer forcing hose is together with after packer connection with drilling rod in tripping in hole, it is ensured that the spring of tension valve enspheres slot or latching
Tighten the upper end that submersible pump is installed on after tightening with the docking of the part AB；
Step 3: being inflated to packer water-filling or with pneumatic steel cylinder to packer with hydraulic pump, so that upper lower packet is swollen
It is swollen, separate the hydraulic connection between purpose water-bearing layer and other water-bearing layers；
Step 4: water pressure data is converted to waterlevel data, and real-time rendering water level in real time by the pressure value of observation sensor
Duration curve, water intaking position stationary value are the initial water level in purpose water-bearing layer；
Step 5: turn on pump draws water, according to national drill-hole pumping test specification observed volume and hydraulic pressure, and real-time rendering flow
And water level duration curve；
Step 6: changing flow according to according to national drill-hole pumping test specification, into the bailing test rank of other drawdowns
Section, while according to national regulation observed volume and hydraulic pressure, water pressure data is converted into waterlevel data, and real-time rendering water level in real time
Duration curve；
Step 7: closing submersible pump according to national drill-hole pumping test specification, stop Flow Observation, continue hydraulic pressure
Observation, and water pressure data is converted into water level in real time and restores data, and real-time rendering water level duration curve；When observation data meet
When national drill-hole pumping test specification, stop observation；
Step 8: drawing the matched curve that water level restores observation curve；
Step 9: restoring the matched curve of observation curve according to water level, obtain hole wall water level；
Step 10: the depth displacement between initial water level and hole wall water level is calculated, the true drawdown value of drilling water level is obtained, the
The bailing test in one purpose water-bearing layer is completed；
Step 11: opening water filling or gas injection valve, expanded capsule is allowed to bounce back；If it is hydraulic expansion method, and remaining head
When larger, then tension valve is lifted, residual water is allowed to reveal；
Step 12: allowing and promote drilling rod, begin preparing the bailing test in second water-bearing layer；
Step 13: in layer position of the ground according to purpose water-bearing layer new in log sheet and hole structure figure, adjustment envelope
Every the position in drill pipe system of device, water inlet floral tube, submersible pump and hydraulic pressure sensor, make them that can accurately reach predetermined surely
Position；
Step 2-step 10 is repeated, until the bailing test in the last one water-bearing layer of drawing water terminates；
Hydraulic pressure sensor in the step 2 is affixed to the bottom of reinforcing bar, and the other end of reinforcing bar is fixed on submersible pump
Bottom, then sensor and reinforcing bar are placed in drilling rod again, the water level in purpose water-bearing layer can be measured in this way, and drawing water
Sensor is unlikely to swing in the process；
The step 4 requires first obtain the initial water in water-bearing layer before each water-bearing layer carries out bailing test
Position, wherein obtaining water-bearing layer initial water level is the water pressure data first acquired in drilling by hydraulic pressure sensor, and hydraulic pressure sensor will
The water pressure data of acquisition is transferred to secondary meter, is then converted into water pressure data by secondary meter or other water level route markers
Corresponding water level value, using the water level value as the initial water level in drilling hole；
The step 5 and step 6 requirement, at each water-bearing layer bailing test initial stage, variable-flow bailing test initial stage
High density is wanted to carry out hydraulic pressure and Flow Observation, sample frequency is not less than 5 times/second；
Step 7 requirement after each water-bearing layer bailing test termination of pumping, will carry out recovery water levelx observation, observation is just
Phase requires data sampling frequency to be not less than 5 times/second, when SEA LEVEL VARIATION meets national bailing test code requirement, stops observation, takes out
Water test terminates；
The step 11 requirement, if with hydraulic buckling survey every bailing test for completing a water-bearing layer will tension it is primary
Valve allows capsule sufficiently to shrink, and creates conditions to promote drilling rod in next step, if being expanded with air pressure or being filled the water into hole, no
Need this process；
A bailing test is not completed in step 12 requirement will promote a drilling rod, press according still further to step 13 on ground
According to the position in purpose water-bearing layer, thickness and hole structure in log sheet, it is laid out a drilling rod combination, again to ensure lower envelope
Every device, water inlet floral tube, upper packer, sensor and submersible pump (disposably integrally can accordingly be placed in purpose water-bearing layer
Water-resisting floor, purpose water-bearing layer, the water-resisting roof layer in purpose water-bearing layer, water proof protection casing lower part；
After getting recovery water levelx data and water level recovery curve in hole by step 8, it is fitted with EXCEL Software on Drawing
Curve finds out rough inflection point from matched curve, which is exactly cone of depression center, is the water level of borehole wall, is
True drawdown point, there are two types of the determination methods of inflection point:
1. graphical method, theoretical calculation and actual observation show at cone of depression center to the hole between water level in borehole
Section, that is, drill hydraulic jump section or unusual section of drilling water level, and the recovery curve of water level is straight line, the water of the above hole section in cone of depression center
Bit recovery curve is curve, crosses 2 initial data points of water level recovery curve and does straight line, the intersection point of the straight line and curve is water
The center of position cone of depression, as shown in Figure 7；
2. analytic method, according to 2 initial data configuration linear equations of water level recovery curve, then the matched curve with funnel
Equations simultaneousness, obtained solution are hopper centre；
In Fig. 7, the water level recovery curve equation in hole between water water level and hopper centre is H1=Kt, funnel water level restore
Observation curve equation is H2=V2(t), wherein K is slope, and t is water level recovery time, and V is water level.
Technical method of the invention is more scientific and reasonable, includes in drill-hole pumping water level test method provided by the invention
Obtain the initial water level in water-bearing layer, i.e. initial water level of the packer packing every the preceding water-bearing layer of rear, turn on pump；Rather than traditional acquisition side
Method, traditional acquisition methods be measurement draw water before each water-bearing layer drilling mixing water level；When turn on pump is drawn water, purpose is obtained
The delta data of water-bearing layer water level；The water level for closing purpose water-bearing layer after pumping restores data；Restore observation data, fitting according to water level
Water level restores observation curve；Restore observation curve according to water level, obtains hole wall water level；It calculates between initial water level and hole wall water level
Depth displacement, obtain drilling water level drawdown value；So as to obtain accurate drawdown, calculates and comment for the water yield in pit
Valence provides accurate parameter；
It is to separate combination, rather than closely combine that it is submersible pump with floral tube of intaking that the present invention is distinguished, closely
Combination is exactly that water inlet floral tube and submersible pump are all placed in the corresponding position of deep aquifers in hole, makes immersible pump and water inlet floral tube
It is directly connected to, in this way, the aperture at purpose water-bearing layer just very big must could accommodate submersible pump, is greatly increased in this way
The cost of engineering and duration；And separation of the present invention combination be only will water inlet floral tube to be placed in deep aquifers in hole corresponding
Position, as soon as submersible pump is but placed in the bottom that water proof protection casing is opened in drilling, the aperture at such purpose water-bearing layer need not be big
In submersible pump, and common aperture is used, in this way, cost and duration can greatly reduce.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. carrying out multiple water-bearing layer bailing test methods in a kind of single gun drilling, which comprises the following steps:
S1: purpose water-bearing layer roof and floor is insulated, avoids purpose water-bearing layer and other water-bearing layers by the packing up and down in purpose water-bearing layer
Water mixing, it is ensured that the reliable technology of data, the technology change packer air pressure expansion technique be hydraulic expansion technology, reduce
Process complexity；
S2: reducing and refer to boring aperture variable quantity on immersible pump, previous immersible pump is placed in water-bearing interval draws water and be changed to drill
The immersible pump of upper sleeve bottom draws water technology, and such purpose water-bearing interval can use common aperture, avoids to hold
Immersible pump of receiving drilling deep aperture is excessive, accident treatment is complicated problem, reduces costs and the duration significantly；
S3: hydraulic pressure sensor is placed in 12-18m on immersible pump by observed stage, and can be in terrestrial high-frequency sample detecting, record
And storage, it is distinguished to be, real drawdown data are obtained, so that assessment of water quantity is more accurate；
S4: retraction packer, packer retraction technology is the technology for being directed to the case where drilling water level buried depth is greater than 100m and using.
2. carrying out multiple water-bearing layer bailing test methods in a kind of single gun drilling according to claim 1, feature exists
In: in S1, according to log sheet, length permeable floral tube identical with purpose water-bearing layer thickness is placed in purpose water-bearing layer
Upper lower packet, is respectively placed in the bottom plate and top plate in purpose water-bearing layer by place, starts ground hydraulic pump, simultaneously by high-voltage tube
Upward lower packet is with certain pressure water flooding, so that packer inflation is to separate the waterpower in purpose water-bearing layer Yu other water-bearing layers
Connection.
3. carrying out multiple water-bearing layer bailing test methods in a kind of single gun drilling according to claim 1, feature exists
In: in S2, drilling is crept into an aperture diameter to certain depth, tripping in retaining wall sealing casing, and then disposably variable diameter is extremely
Borehole bottom location；It will appear two kinds of different soils of unconsolidated formation and bedrock aquifer when drilling.
4. carrying out multiple water-bearing layer bailing test methods in a kind of single gun drilling according to claim 1, feature exists
In: in S3, it is placed in the hydraulic pressure sensor above immersible pump at about 12--18m and is placed in hole together with immersible pump, detection,
Water level numerical value before and after record draws water and in pump process, to determine the variation and stable case of water level.
5. carrying out multiple water-bearing layer bailing test methods in a kind of single gun drilling according to claim 1, feature exists
In: in S4, after the bailing test in certain purpose water-bearing layer, packer is the pressure release that discharge water, and the capsule of packer is allowed to receive
Contracting, so that capsule is unlikely to be worn by hole wall when drilling rod is promoted, but due to still having between certain drilling water levels and ground
The height difference of 100m or more, the remaining head in high-pressure hose still have the pressure greater than 1.0MPa to capsule so that capsule without
Method is shunk in place, and drilling rod promotion will cause capsule to damage, and two kinds of solutions can be used to solve this problem.
6. carrying out multiple water-bearing layer bailing test devices in a kind of single gun drilling according to claim 1, feature exists
In the device includes: drilling packer, hydraulic pressure sensor, secondary meter, data processor, pressure pump or steel cylinder, packer time
Tension valve, submersible pump and the floral tube drilling rod of contracting, the drilling packer are made of the reinforcing bar capsule for being wrapped in drilling rod, capsule
It is used for storage water or gas, has water inlet in the upper section of capsule, connected by high-pressure hose and the pressure pump or steel cylinder in aperture, by pressing
Power pump or steel cylinder pass through high-pressure hose to capsule water-filling or inflation, so that capsule expands, play isolation purpose water-bearing layer and other
The purpose of hydraulic connection between water-bearing layer.
7. carrying out multiple water-bearing layer bailing test devices in a kind of single gun drilling according to claim 6, feature exists
In the hydraulic pressure sensor, for acquiring water pressure data in initial water level and hole, and by hydraulic pressure number in the initial water level and hole
Secondary meter is transferred to according to by data cable.
8. carrying out multiple water-bearing layer bailing test devices in a kind of single gun drilling according to claim 6, feature exists
In: the secondary meter sends monitoring order to the hydraulic pressure sensor by data cable；Receive, store and show hydraulic pressure
Water pressure data in the initial water level of sensor transmissions and hole.
9. carrying out multiple water-bearing layer bailing test devices in a kind of single gun drilling according to claim 6, feature exists
In: water pressure data in hole is converted into water level and restores observation data by the data processor, is restored observation data according to water level and is drawn
Water level recovery curve processed is fitted water level according to water level recovery curve and restores observation curve, restores observation curve according to water level and obtains
Hole wall water level calculates the depth displacement between initial water level and hole wall water level, obtains drilling water level drawdown value.
10. carrying out multiple water-bearing layer bailing test devices in a kind of single gun drilling according to claim 6, feature exists
In: the sensor, secondary meter and data processor have collectively constituted water-level observation system, and the secondary meter includes receiving
Element, memory element, control element, signal key and display screen are the commercially available product in market, and the tension valve method is exactly in high pressure
The tension splice combinations of the underwater a part installation of hose, lift hose after engineering of drawing water is completed, when pulling force reaches a certain number
Connector takes off mouth when value, and the water in hose is flowed out from discharge outlet, and the residual water to drill in the above hose of the water surface disappears, and capsule is caused to let out
Pressure is shunk, and connector takes off mouth, and there are two types of implementation methods.
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| CN111946333A (en) * | 2020-07-02 | 2020-11-17 | 临沂矿业集团菏泽煤电有限公司 | Simple test and solution method for aquifer hydrogeological parameters under curtain grouting condition |
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| CN110863815A (en) * | 2019-11-26 | 2020-03-06 | 中国矿业大学 | Method for monitoring ecological water source disturbance caused by overburden mining abscission layer expansion and barrier |
| CN110849435B (en) * | 2019-11-26 | 2020-08-28 | 中国矿业大学 | A kind of monitoring method of aquifer barrier in borehole and multi-layer water level change monitoring |
| CN111561310A (en) * | 2020-05-09 | 2020-08-21 | 北京慧坤科技有限公司 | Hydrogeology long-term drilling layering monitoring devices that sees |
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| CN111946333B (en) * | 2020-07-02 | 2021-05-18 | 临沂矿业集团菏泽煤电有限公司 | Simple test and solution method for hydrogeological parameters of aquifer under curtain grouting condition |
| CN111947988B (en) * | 2020-08-24 | 2023-04-07 | 中国地质调查局西安地质调查中心(西北地质科技创新中心) | Device for layered pumping and sampling of underground water and test method thereof |
| CN111947988A (en) * | 2020-08-24 | 2020-11-17 | 中国地质调查局西安地质调查中心(西北地质科技创新中心) | Device for layered pumping and sampling of underground water and test method thereof |
| CN116641698A (en) * | 2023-05-10 | 2023-08-25 | 中国地质科学院岩溶地质研究所 | Energy-saving karst groundwater level on-line monitoring device |
| CN116641698B (en) * | 2023-05-10 | 2023-10-20 | 中国地质科学院岩溶地质研究所 | Energy-saving karst groundwater level on-line monitoring device |
| CN119333108A (en) * | 2024-12-20 | 2025-01-21 | 中国地质调查局水文地质环境地质调查中心 | Observation hole stratified isolation observation device and method for stratified pumping test |
| CN119333108B (en) * | 2024-12-20 | 2025-02-28 | 中国地质调查局水文地质环境地质调查中心 | Observation hole stratified isolation observation device and method for stratified pumping test |
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