CN108468528A - Fourth-series deep well layered water pumping and stopping device and water pumping and stopping method thereof - Google Patents
Fourth-series deep well layered water pumping and stopping device and water pumping and stopping method thereof Download PDFInfo
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- CN108468528A CN108468528A CN201810480438.2A CN201810480438A CN108468528A CN 108468528 A CN108468528 A CN 108468528A CN 201810480438 A CN201810480438 A CN 201810480438A CN 108468528 A CN108468528 A CN 108468528A
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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
-
- 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
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/084—Obtaining fluid samples or testing fluids, in boreholes or wells with means for conveying samples through pipe to surface
Abstract
The invention discloses a stratified water pumping and stopping device for a fourth-series deep well and a water pumping and stopping method thereof, wherein the device comprises a drill rod joint, a pump chamber pipe arranged at the lower part of the drill rod joint, a water guide pipe arranged at the lower part of the pump chamber pipe, a rubber water stopping air bag arranged on the outer wall of the upper part of the water guide pipe and a rubber water stopping plug arranged on the outer wall of the lower part of the water guide pipe; the using method comprises the following steps: 1) sampling and analyzing a drill hole; 2) drilling a well; 3) punching; 4) mounting a well pipe; 5) filling gravel and stopping water; 6) washing the well; 8) and (5) water pumping test. The deep well layered water stop device is simple in structure, the using method overcomes the defects of the traditional water stop method, the operation is convenient, the water stop effect is reliable through actual use, the upper aquifer and the lower aquifer are effectively isolated, the layered water stop in the pipe can be realized in the same well hole, and the purpose of a layered water pumping test is achieved. The layered water pumping and stopping device and the layered water pumping and stopping method are suitable for respectively observing and pumping water in different aquifers during hydrogeological drilling.
Description
Technical field
It is that deep-well is layered draw water antipriming and its water-stopping method that draws water the present invention relates to one kind the 4th, is suitable for the 4th system
Deep-well is layered bailing test.
Background technology
It is in different water cut layer to be layered sealing（Group）Area carry out hydrogeologic drilling when, in order to obtain each water-bearing layer
（Group）The hydrogeological parameters such as water, water level, water quality and water temperature, need to be by different water cut layer（Group）It is observed and draws water respectively
Experiment.By design requirement in water barrier position, to water-bearing layer above and below well（Group）Isolation sealing is carried out, water-bearing layer string up and down is prevented
Logical work is known as being layered sealing.Including sealing two parts in sealing outside pipe and pipe, manages outer sealing and generally existed using sealing material
Sealing section（Water barrier）Carry out permanent leaking water；Sealing is that the reasonable sealing position designed in well casing is stopped temporarily in pipe
Water obtains different water cut layer to carry out the bailing test of different water cut layer in same well（Group）Hydrogeological parameter.
When the country carries out sealing in layering drinking-water pipe at present, setting of casing, filler block water-stop method and air bag are generally used
Water-stop method.Former approach needs to prepare sealing tubing, and cost is big, and down tube when operation puies forward the tedious process such as pipe, lower filler block,
Interval time is long, easily causes drilling accident.Second method, for deep layer sealing, it is desirable that ground has charger, gas line anti-
Compressive Strength requires height, security reliability poor.Observe water-bearing layer SEA LEVEL VARIATION up and down very well while above two method cannot be,
It is unable to judge accurately the requirement whether water-stagnating effect meets layering bailing test, it is therefore desirable to set according to actual conditions comprehensive study
Design more practical, more reliable layering antipriming and method.
Invention content
The present invention provides a kind of layering of solution deep-well and draws water the deep-well that stop safe water is poor, is unable to judge accurately water-stagnating effect
It is layered draw water antipriming and its water-stopping method that draws water.
To achieve the above object, the technical solution adopted in the present invention is as follows：
One kind the 4th is that deep-well layering is drawn water antipriming, its technical solution is that：It includes tool joint, is set to drilling rod connecting
Head lower part by the ring flange pipe nipple of flanged joint, be set to ring flange pipe nipple lower part by the pump chamber pipe of flanged joint, set
It is placed in the aqueduct of pump chamber pipe lower part, the rubber water-proof air bag that is set in aqueduct external wall of upper portion and is set to aqueduct lower part
Rubber water-proof plug on outer wall, the pump chamber pipe are internally provided with immersible pump.
As restriction, the top and bottom of the rubber water-proof air bag are respectively arranged with disk and air bag lower wall, the gas on air bag
It is provided on disk on capsule for the gas wire terminal to airbag aeration.
It is limited as another kind, the top and bottom of the rubber water-proof plug, which are respectively arranged on the filler block of fixed filler block, presses
Disk and filler block pressing disc are additionally provided with filler block guider ring, filler block guider ring position on the outer wall of the aqueduct lower part
In the top of rubber water-proof plug.
As further limiting, water level monitoring probe is provided on the aqueduct, the water level monitoring probe is located at rubber
The lower part of glue sealing air bag.
It is limited as further, sealing seat is provided on sealing section inner wall in the corresponding well casing of the rubber water-proof plug
Ring.
A kind of deep-well layering antipriming that draws water draw water the method for sealing comprising following steps：
1) drill hole sampling is analyzed, and determines Quaternary Strata lithology and water-bearing layer, is divided Stratigraphic Time, is defined fresh-saline water interface, and
Determine depth of pore forming and orifice diameter；
2）Drilling well, using three wings drag bit, the drilling method of mud off, twice pore-forming drilling well；
3）Punching after drilling, adjusts mud property, and circulating time 2-3h keeps mud density above and below in hole uniform；
4）Well casing is installed, using suspention welding down tube；
5）Fill out gravel and sealing
Gravel is filled out using hydrostatic stuffing process, gravel material chooses quartziferous river gravel, and a diameter of 2-5mm is used according to the effective grain size in water-bearing layer
Mixing gravel material, using the clay bulb outer closure sealing of diameter 20-30mm；
6）Well-flushing
It is that deep-well carries out small pump amount pumping well-flushing, piston well-flushing, big pump amount pumping well-flushing successively to the 4th to fill out after gravel sealing；
7）Bailing test
It after well-flushing, does three and falls journey bailing test, be well for the 4th, drawdown, which is answered, ascending carries out examination of drawing water
It tests.
The step 4）Specific method be：
（1）Before down tube down tube depth 4-5m is should be greater than using original state drilling tool alignment aperture, hole depth and inspecting hole, hole depth；
（2）It is wrapped up two layers according to water-bearing layer granular size, 90-100 mesh gauze effective to drainage before down tube, the protection of outsourcing bamboo curtain splint
Gauze, is tied up every 20-30cm spacing with iron wire, is prevented gauze from loosening when drawing water and is blocked filter pipe gap；
（3）The defects of checking well casing, finding incomplete, fracture and bending is replaced in time, and well casing, filter pipe sort by design
And measure number by root；
（4）When down tube, by comb sequence by root inspection, record, first well casing sealed bottom, when down tube, tightens clamping plate screw,
Before well casing welding, in well casing all around messenger wire, by well casing to just connect it is straight after start to weld, firm welding is reliable, tight-closed
The step 5）Specific method be：
（1）According to bore diameter, well casing diameter and fills out gravel height and determine gravel material dosage；
（2）Gravel pronucleus is filled out after down tube to well casing depth, calculates layering sealing position, is carried out an acceptance inspection inspection to specification, the quantity of gravel material
It looks into, in advance by lining rope tripping in layering sealing position when filling out gravel, is surveyed when filling out, uniformly, slowly insert, keep away from well head surrounding when filling out gravel
Exempt to generate bridge formation clogging；
（3）Sealing：After first segment gravel material completes, stop waiting for the 30min times, measures gravel material height, fill out to postpone in place and start to fill out clay
Ball sealing, first segment are layering sealing section, calculate clay ball dosage, and from aperture surrounding pipe outer ring-like gap, manually uniformly input is glutinous
Soil ball measures at any time；After completing, stopping waiting for 1 hour time, measures clay ball height again, water barrier height region is filled out in guarantee,
Start to fill out gravel material, subsequently gravel water sealing operation is filled out by above step progress.
The step 7）Specific method be：
Workspace is divided into four water-bearing layer groups, respectively the Ith water-bearing layer group, the IIth water-bearing layer group, the IIIth water-bearing layer group and
IV water-bearing layer group, 3 parts of deep well bailing test point carry out, and first carry out mixed pumping test, and second step carries out the IVth water-bearing layer
Component layers bailing test finally carries out the IIIth water-bearing layer component layers bailing test；Mixed pumping water routinely bailing test method into
Row observation；III, the IVth water-bearing layer component layers bailing test need to carry out layering sealing using antipriming in pipe, and isolation is up and down
Water-bearing layer prevents upper and lower water-bearing layer from ganging up；During being layered bailing test, at the same to the III, the IVth water-bearing layer group water level into
Row monitoring, to examine water-stagnating effect.
The present invention is as a result of above-mentioned structures and methods, and compared with prior art, acquired technological progress exists
In：
（1）Deep-well of the present invention layering is drawn water antipriming, be utilized drilling rod that construction drilling is used as aqueduct, be discharged
The counterweight of pipe and filler block, it is simple in structure；
（2）Present invention synthesis has used filler block and sealing air bag, and water-stagnating effect is good, is more suitable for deep layer sealing；
（3）The present invention is mounted with level of ground water probe while monitoring or more water-bearing layer SEA LEVEL VARIATION, examines water-stagnating effect at any time, pacifies
Full performance is good, avoids and all kinds of drilling accidents occurs.；
To sum up, the configuration of the present invention is simple, water-stagnating effect are good, have a safety feature, and are suitable for deep-well and are layered water pumping experiment.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
In the accompanying drawings：
Fig. 1 is the wellbore structure schematic diagram of the embodiment of the present invention；
Fig. 2 is that the layering of the embodiment of the present invention is drawn water antipriming structural schematic diagram；
Fig. 3 is that the IVth water-bearing layer component layers of the embodiment of the present invention are drawn water schematic diagram；
Fig. 4 is that the IIIth water-bearing layer component layers of the embodiment of the present invention are drawn water schematic diagram；
Mark component：325 well casings of 1- φ, the outer clay sealing section of 2- upper tubes, 219 well casings of 3- φ, 4- filter pipes, at 5- separation layers
The outer clay sealing section of pipe, 6- sealing seat rings, 7- tool joints, 8- ring flange pipe nipples, 9- upper flange plates, 10- pump chamber pipes, 11- are latent
Water pump, 12- lower flanges, 13- aqueducts, 14- gas wire terminals, disk on 15- air bags, 16- rubber water-proof air bags, under 17- air bags
Disk, 18- water level monitorings are popped one's head in, 19- filler block guider rings, platen on 20- filler blocks, 21- rubber water-proof plugs, under 22- filler blocks
Platen, 23- outlet pipes, 24- air pumps, 25- gas lines, 26- drilling rod rightings, 27- filler block counterweights.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.It should be appreciated that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment one kind the 4th is that deep-well is layered the antipriming that draws water
With reference to Fig. 2, the layering of the present embodiment antipriming that draws water includes pump chamber pipe 10, aqueduct 13,16 and of rubber water-proof air bag
Rubber water-proof plug 21, pump chamber pipe 10 uses Φ 219 × 8mm seamless pipe processing and fabricatings, length 2500mm, pipe shaft to open in the present embodiment
30 × 200mm marking shape windows for crossing water, inside setting immersible pump 11,10 upper end of pump chamber pipe passes sequentially through upper flange plate
9 and ring flange pipe nipple 8 be connected to tool joint 7,10 lower end of pump chamber pipe passes through lower flange 12 and connects aqueduct 13, this reality
It applies aqueduct 13 in example and directly utilizes 89 drilling rods of Φ, and use screwed connection.
The present embodiment stops water ballonet by disk 15, air bag lower wall 17 and rubber water-proof air bag 16 on gas wire terminal 14, air bag
It forms, after inflation, rubber pneumatic bag and well casing inner wall squeezed tight play sealing effect.
Sealing rubber stopper by platen 20, rubber water-proof plug 21 on filler block guider ring 19, filler block and stops in the present embodiment
Water plug pressing disc 22 forms, and when layering is drawn water, 21 dilatancy of rubber water-proof plug under drilling rod gravity pressure is isolated aqueous up and down
Layer.
The present invention is provided with water level monitoring probe 18 on drilling rod, and water level monitoring probe 18 uses model in the present embodiment
The level of ground water and automatic temperature recorder of 3001-M200, the range that fathoms 200m, 0.05%/0.05 DEG C of monitoring accuracy are deposited
Store up 2 × 40000 readings of capacity.It is mounted on corresponding position when drawing water, water level, water temperature are monitored automatically, examines sealing effect
Fruit.
The sealing fragment position that the present invention corresponds to rubber water-proof plug 21 on well casing inner wall is provided with sealing seat ring 6, this implementation
Sealing seat ring is processed with 20mm steel plates in example, internal diameter 130mm, outer diameter 219mm.
The IIIth water-bearing layer group is closed isolation by rubber water-proof air bag 16 and rubber water-proof plug 21 up and down when the present embodiment use,
Can water pumping experiment be carried out to the IIIth water-bearing layer group, the IVth water-bearing layer group respectively.
Embodiment one kind the 4th is that deep-well layering is drawn water antipriming its water-stopping method that draws water
The present embodiment is applicant in Jing-jin-ji region cooperative development Wenan, Renqiu, big city, the Qing County 1 that 2017 years carried out:50000 rings
The work of border Geological Survey Projects, wherein hydrogeologic drilling is that fresh-water aquifer is arranged mainly for the 4th, is designed altogether
Deep 10, the hydrogeological prospecting in mining holes 320-500m, wherein 6 carry out layering bailing test, main purpose is to expose the 4th
System, finds out Stratigraphic Time and the occurrence condition of the origin cause of formation, underground water（Lithology, thickness, structure including water-bearing layer etc.）With bury depth
Degree, carries out layering bailing test, obtains the III, the IVth water-bearing layer group hydrogeological parameter, degree of water-rich respectively, and doubling-up has been provided
The groundwater occurrence area of agriculture water resources sector and hydrous fluids range with central water supply foreground select standby Groundwater of meeting an urgent need
Source.
According to well structure and strata condition is disclosed, on the basis of summarizing previous layering antipriming experience, is courageously created
Newly, a kind of deep-well layering of research and design is drawn water water-stopping method, good through using effect, meets layering bailing test sealing and sight
It surveys and requires.
The present embodiment by taking deep 2 drillings of SK or drilling well as an example, draw water the specifically used of antipriming by the layering for introducing the present invention
Method.
SK deep 2 drills（Well）It is the 4th system's hydrogeology prospecting in mining hole, main purpose positioned at the villages Sun Shi Zhen great of Wenan County
It is by complete opening coring, geophysical logging and sampling（Light releases light, C14, paleomagnetism）Analysis understands Quaternary Strata lithology and aqueous
Layer divides Stratigraphic Time, defines fresh-saline water interface；Reaming Cheng Jinghou carries out layering bailing test, finds out the III, the IVth water-bearing layer
Situations such as group water quality, water.According to hydrogeologic data early period and investigation, boring and coring depth 482.11m.Coring is complete
Bi Hou, according to actual formation situation and geophysical logging as a result, well depth 445.00m.One's respective area divides the IIIth water-bearing layer group
Position is 145.90-319.00m, and the position of the IVth water-bearing layer group is 343.70-439.00m, is the water intaking target zone of this well.
1.1 strata condition
Quaternary Strata sequence is complete in workspace belonging to deep 2 drillings of SK, sediment type, complex genesis, with alluviation, proluvial with
And based on their transitional type, there is extra large product, region thickness 280-550m, mostly terrestrial facies accumulation, thickness is big, mutually complicates,
Genetic type has the accumulation of interchannel band, the accumulation of river band, rushes proluvial swamp deposit, and there is sea-land interbedding facies accumulation in east.STRATIGRAPHIC DIVISION
For Holocene series（Qh）It unites with update（QP）, Holocene series mainly glued by alluviation, alluviation sea product, the ash of Hai Jixiang, lark silty
Soil, silt and grey, lark flour sand, fine sand composition, generally there is 1-2 layers of very soft sill clay or peat horizon, wherein marine facies
Sedimentary is made of very soft sill clay, silt, and region thickness is generally in 20-40m.Western part rushes proluvial by river, and middle part is
Extra large land interaction deposition, east are marine deposit；Tong Di circle buried depths are updated in 380-550m.Lithology be mainly clay, silty clay,
Layer of sand in silty sand, fine sand layer.Layer of sand tool mixes kernel structure, locally there is agglutination sand.
By boring and coring, deep 2 drillings of SK disclose stratum and are briefly divided into：
（1）0.00-37.60m, the 4th is Holocene series（Qh）, formation lithology is to plough to plant soil, silt, silty clay flour sand, fine sand；
（2）37.60-318.70m the 4th system update system（QP）, formation lithology is silty clay, flour sand, fine sand, middle sand, thick
Sand.
（3）318.70-358.80m the 4th system update system（QP）, master stratum lithology is silty clay, is the IIIth, the
IV water-bearing layer group water barrier.
（4）358.80-482.11m the 4th system update system（QP）, formation lithology be silty clay, flour sand, fine sand, in
Sand.
1.2 hydrogeologic condition
The deep 2 drilling residing workspaces SK ground across Daqinghe River ground water regime area and Ziyahe River ground water regime area, local area underground water
Main preservation is in loose rock class hole water-bearing rock group in the 4th, water-bearing layer in multilayered structure, band-like spread, lithology with fine sand,
Based on flour sand, part is middle sand, coarse sand.
Workspace is divided into four water-bearing layer groups, and the I, the IIth water-bearing layer group, bottom circle buried depth is respectively in 10-30m and 140-
200m, most of is superficial water and salt water, and exploitation utility value is little；IIIth water-bearing layer group（Aqueous group of mid-deep strata pressure-bearing）Bottom circle
Buried depth is suitable with mid Pleistocene series stratum in 280-380m, this group of hydrogeologic condition is from West to East by being deteriorated well, and granularity is by slightly gradually
Carefully, groundwater level buried depth is between 61-72m.IVth aqueous group（Aqueous group of deep layer pressure-bearing）Bottom circle buried depth in 380-550m, with
Lower Pleistocene stratum is suitable, and predominantly the argillic horizon of thick-layer interacts deposition with layer of sand, except western layer of sand particle is more slightly medium-fine sand
Outside, in, east be mostly gyittja, layer of sand is Extra-fine sand, and thickness is generally higher than 30m, this group of hydrogeologic condition is from West to East
By being deteriorated well, granularity is by thick tapered, and sand layer thickness is by thick thinning.III, the IVth water-bearing layer group is the basal water profit of local area
With section.
Workspace deep phreatic water runoff is slow, and main Source Of Supply is recharge laterally, is secondly leakage-releasing water, water-bearing rock
Hydraulic connection is weaker between group, and area excretion is mainly man-made recovery and lateral outflow.
According to drill hole geologic Drill core logging and well logging achievement data, determine that the position that SK deep 2 drills the IIIth water-bearing layer group is
The position of 145.90-318.70m, the IVth water-bearing layer group are 358.80-439.00m, at well water intaking section.
1.3 wellbore structure
Referring to attached drawing 2, the draw water drill configuration of water-stopping method of the present invention is to be edited and recorded according to boring and coring stratum and well-log information, salty
Fresh water interface depth is 124.45m, and the deep 2 drilling design well depths of SK are 445.00m, practical well depth 445.00m, for ease of glutinous
Soil ball is launched and is measured, the big 100-150mm of the drilling more conventional bore of bore.
Wellbore structure is as follows：
（1）0-150.00m：Drill bore Φ 650, wherein 325 × 7mm of 0-135.00m tripping in Φ spirals steel plate well casing.
（2）150.00-445.00m：Drill bore Φ 600,135-445.00m tripping in Φ 219 × 7mm well casings, water-bearing layer
Tripping in bridge type filter pipe.
（3）0-140.00m,322-352.00m:Using clay ball sealing, top salt water layer and layering sealing are closed off.
2 Cheng Jing and the outer sealing technique of pipe
2.1 drilling equipment
Main drilling equipment is Shanghai SP-600 type slewing drilling machines, and BWB850/20 slush pumps, boring tower is 15m high " A " type tower, is applied
Work power is motor, general power 45KW.
2.2 drilling method
Using three wings drag bit total cost management, twice pore-forming, the drilling method of mud off.To improve efficiency and ensureing to drill
Verticality, an opening diameter φ 400mm, two groups of centralizers of band reach design bore after creeping into second reaming on earth.
2.3 mud
Natural pulping retaining wall in drilling process, blocks water-bearing layer with reducing mud, is convenient for quick well-flushing, mud balance 1.08-
1.2g/cm3 adjusts mud balance according to situation in stratum and hole, achievees the purpose that balance drilling, prevents from caving in and retaining wall.
Behind whole hole, adjust mud property, punching 2-3h, make in hole up and down mud density it is uniform, reach and change slurry purpose, change slurry
Mud density reaches 1.10g/cm3 hereinafter, mud viscosity 18-20s, sand content are not more than 4% afterwards.
2.4 well casings are installed
According to drilling machine hoisting power and well casing weight, using suspention welding down tube.
（1）Before down tube down tube depth 4-5m is should be greater than using original state drilling tool alignment aperture, hole depth and inspecting hole, hole depth.
（2）It is wrapped up two layers according to water-bearing layer granular size, 90-100 mesh gauze effective to drainage before down tube, outsourcing bamboo curtain splint
Gauze is protected, is tied up with 12# iron wires every 20-30cm spacing, prevents gauze from loosening when drawing water and blocks filter pipe gap.
（3）The defects of being gone through to well casing, finding incomplete, fracture and bending is replaced in time.Well casing, filter pipe are pressed
Design sorts and measures number by root, prevents filter pipe from misplacing.
（4）When down tube, by comb sequence by root inspection, record, first well casing sealed bottom, when down tube, tightens clamping plate spiral shell
Silk, before well casing welding, in well casing all around messenger wire, by well casing to just connect it is straight after start to weld, firm welding is reliable, closing is tight
It is close.
2.5 filling out gravel and sealing
Gravel is filled out using hydrostatic stuffing process, gravel material chooses quartziferous river gravel, and clean impurity is few, is used according to the effective grain size in water-bearing layer
The mixing gravel material of 2-5mm.Using diameter 20-30mm clay bulb outer closure sealings, it is desirable that clay impurity lacks purity height, viscosity
Greatly, clay ball is advisable with half-dried.
（1）According to bore diameter, pipe well diameter and fills out gravel height and determine gravel material dosage.
（2）Technical staff checks well casing depth before filling out gravel after down tube, accurate to calculate layering sealing position, to the rule of gravel material
Lattice, quantity carry out an acceptance inspection inspection, if meet design requirement, if lose side, forbid inserting unqualified gravel material, calculate every section of gravel material
Fang Liang, and Measuring rope tripping in layering sealings position is surveyed when filling out, uniformly, slowly inserts, avoid from well head surrounding when filling out gravel in advance
Generate " bridge formation " clogging.
（3）Gravel material fills：First segment 352-445m calculates gravel material dosage Bing and Measuring is restricted probe placement to 360m, visits at any time
It surveys, stops filling out gravel at once when detecting gravel charge level, it is ensured that gravel material height is fallen in 352m or so.Second segment 140-322m gravel material answer height
Go out the above 6m of filter pipe, fills out gravel height and be no more than 140m.
（4）Sealing：After first segment gravel material completes, stop waiting for 30min, measure gravel material height, fills out to postpone in place and start to fill out clay
Ball sealing, first segment 322-352m is layering sealing section, accurate to calculate clay ball dosage, from aperture surrounding pipe outer ring-like gap people
Work uniformly puts into clay ball, measures at any time.After completing, stopping waiting for 1h, measures clay ball height again, 322m or so is filled out in guarantee,
Start to fill out gravel material, subsequently gravel water sealing operation is filled out by above step progress.
2.6 well-flushing
It fills out and small pump amount has been carried out to deep 2 wells of SK after gravel sealing draws water-draw the pumping and washing process that the big pump amount of piston-draws water.
（1）Small pump amount pumping well-flushing.
The high lift of 175QJ40-132 types, small pump amount immersible pump is first used to draw water well-flushing, it is therefore an objective to which gradually dredging is aqueous up and down
Layer, closely knit gravel material prevent big pump amount predatoriness from drawing water and are damaged to water-bearing layer and filter pipe.2-3 machine-team of time of pumping, water
Sand removal is net, water level and flow terminates after stablizing.
（2）Piston well-flushing.
Small pump amount is drawn water post-tensioning piston well-flushing, and mud in well is further removed, and destroys mud cake on the wall of borehole, dredges water-bearing layer, is increased
Big permeability arranges gravel material so that is formed around filter pipe and stablizes drainage layer, to reach the normal water yield of well.
（3）Big pump amount pumping well-flushing
Last tripping in immersible pump carries out big pump amount, big drawdown is drawn water well-flushing, until water-bearing layer is all dredged, water yield, water level are steady
It is scheduled in normal range (NR), starts to do bailing test.
2.7 bailing test
It after well-flushing, does three and falls journey bailing test, be well for the 4th, drawdown, which is answered, ascending carries out examination of drawing water
It tests.
3 parts of the deep 2 well water pumpings experiments point of SK carry out, and first carry out mixed pumping test, second step carries out the IVth water-bearing layer
Component layers bailing test finally carries out the IIIth water-bearing layer component layers bailing test.Mixed pumping water routinely bailing test method into
Row observation.III, the IVth water-bearing layer component layers bailing test need to carry out layering sealing using antipriming in pipe, and isolation is up and down
Water-bearing layer prevents upper and lower water-bearing layer from ganging up；During being layered bailing test, at the same to the III, the IVth water-bearing layer group water level into
Row monitoring, to examine water-stagnating effect.
The application method of layering antipriming in 3 pipes
3.1 the IVth water-bearing layer component layers are drawn water
Referring to attached drawing 3, the IVth water-bearing layer component layers are drawn water, and according to sealing seat ring depth, hydrostatic level, accurate calculating antipriming is each
Partial-length, in order tripping in rubber water-proof plug → aqueduct successively（89 drilling rods of Φ）→ rubber water-proof air bag → pump chamber pipe → goes out
Water pipe, while water level monitoring probe, gas line and water pump being installed.After decentralization in place, with ground air pump by gas line to rubber water-proof
Airbag aeration, pressure reach 0.4MP or so, and the rubber water-proof air bag after inflation and the rubber water-proof plug after by compression swelling are by the IIIth
Water-bearing layer group closes isolation up and down, and the IVth water-bearing layer group artesian water is exported by drilling rod when bailing test, by pump chamber window of tube into
Enter in 325 well casings of Φ, manages interior lower survey line or probe the IVth water-bearing layer group water level of observation, while wireless automatic water level monitors probe inspection
The IIIth water-bearing layer group water level is surveyed, if the IIIth water-bearing layer group SEA LEVEL VARIATION very little or fluctuated within the allowable range, it was demonstrated that isolation stops
Water success, has reached water-stagnating effect.
When antipriming is installed, notice that each section junction screw thread, flange screw must be tightened, adds among ring flange
Pad, prevents from leaking；Safeguard measure is taken at the easy extruding of colliding with such as gas line, cable, slow play is gently drawn when going into the well, in order to avoid damage gas
Capsule, gas line and cable；After rubber water-proof plug touches sealing seat ring position, slowly to pressure, pressure is drilling tool total weight for decentralization
Total weight cannot be pressed onto on seat ring by about 2-3t, in order to avoid damage seat ring and well casing.
3.2 the IIIth water-bearing layer component layers are drawn water
Referring to attached drawing 4, the IIIth water-bearing layer component layers are drawn water, and after the IVth water-bearing layer group bailing test, antipriming is proposed,
Lower after the aqueduct of closing filler block lower part to bore, filler block top connects 100m or so drilling rod as filler block counterweight, is bored with Φ 89
Watertight rubber plug is sent to sealing seat ring position by bar together with counterweight, and top rod, filler block closing isolation lower part are proposed after dropout
Water-bearing layer.Progress bailing test in 325 well casings of Φ will be arrived under experiment immersible pump.After the completion of bailing test, water pump, lower Φ 89 are proposed
Drilling rod make-up proposes filler block and counterweight drilling rod.
The present embodiment solves the problems, such as that deep-well is layered the sealing that draws water, and can be that deep-well is layered bailing test used in the 4th.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in power of the present invention
Within the scope of profit is claimed.
Claims (9)
1. one kind the 4th, which is deep-well, is layered the antipriming that draws water, it is characterised in that：It includes tool joint（7）, be set to drilling rod
Connector（7）The ring flange pipe nipple by flanged joint of lower part（8）, be set to ring flange pipe nipple（8）Lower part passes through flanged joint
Pump chamber pipe（10）, be set to pump chamber pipe（10）The aqueduct of lower part（13）, be set to aqueduct（13）Rubber in external wall of upper portion
Glue sealing air bag（16）Be set to aqueduct（13）Rubber water-proof plug on the outer wall of lower part（21）, the pump chamber pipe（10）It is interior
Portion is provided with immersible pump（11）.
2. the according to claim 1 a kind of 4th is that deep-well is layered the antipriming that draws water, it is characterised in that：The rubber stops
Water ballonet（16）Upper/lower terminal be separately provided for fixed rubber water-proof air bag（16）Air bag on disk（15）Under air bag
Disk（17）, disk on the air bag（15）On be provided with for the gas wire terminal to airbag aeration（14）.
3. the according to claim 1 a kind of 4th is that deep-well is layered the antipriming that draws water, it is characterised in that：The rubber stops
Water plug（21）Upper/lower terminal be separately provided for platen on the filler block of fixed filler block（20）With filler block pressing disc
（22）, the aqueduct（13）Filler block guider ring is additionally provided on the outer wall of lower part（19）, the filler block guider ring（19）Position
In rubber water-proof plug（21）Top.
4. the according to claim 1 a kind of 4th is that deep-well is layered the antipriming that draws water, it is characterised in that：The aqueduct
（13）On be provided with water level monitoring probe（18）, the water level monitoring probe（18）Positioned at rubber water-proof air bag（16）Lower part.
5. the according to claim 1 a kind of 4th is that deep-well is layered the antipriming that draws water, it is characterised in that：The rubber stops
In 21 corresponding well casing of water plug sealing seat ring is provided on sealing section inner wall（6）.
6. it is that the deep-well layering antipriming that draws water draw water the method for sealing using the described in claim 1 4th, feature
It is, includes the following steps：
1) drill hole sampling is analyzed, and determines Quaternary Strata lithology and water-bearing layer, is divided Stratigraphic Time, is defined fresh-saline water interface, and
Determine depth of pore forming and orifice diameter；
2）Drilling well, using three wings drag bit, the drilling method of mud off, twice pore-forming drilling well；
3）Punching after drilling, adjusts mud property, and circulating time 2-3h keeps mud density above and below in hole uniform；
4）Well casing is installed, using suspention welding down tube；
5）Fill out gravel and sealing
Gravel is filled out using hydrostatic stuffing process, gravel material chooses quartziferous river gravel, and sealing uses clay ball sealing apolipsis water；
6）Well-flushing
It is that deep-well carries out small pump amount pumping well-flushing, piston well-flushing, big pump amount pumping well-flushing successively to the 4th to fill out after gravel sealing；
7）Bailing test
It after well-flushing, does three and falls journey bailing test, be well for the 4th, drawdown, which is answered, ascending carries out examination of drawing water
It tests.
7. the according to claim 6 4th is that deep-well is layered the water-stopping method that draws water, which is characterized in that the step 4）Tool
Body method is：
（1）Before down tube down tube depth 4-5m is should be greater than using original state drilling tool alignment aperture, hole depth and inspecting hole, hole depth；
（2）It is wrapped up two layers according to water-bearing layer granular size, 90-100 mesh gauze effective to drainage before down tube, the protection of outsourcing bamboo curtain splint
Gauze, is tied up every 20-30cm spacing with iron wire, is prevented gauze from loosening when drawing water and is blocked filter pipe gap；
（3）The defects of checking well casing, finding incomplete, fracture and bending is replaced in time, and well casing, filter pipe sort by design
And measure number by root；
（4）When down tube, by comb sequence by root inspection, record, first well casing sealed bottom, when down tube, tightens clamping plate screw,
Before well casing welding, in well casing all around messenger wire, by well casing to just connect it is straight after start to weld, firm welding is reliable, tight-closed.
8. the according to claim 6 4th is that deep-well is layered the water-stopping method that draws water, which is characterized in that the step 5）Tool
Body method is：
（1）According to bore diameter, well casing diameter and fills out gravel height and determine gravel material dosage；
（2）Gravel pronucleus is filled out after down tube to well casing depth, calculates layering sealing position, is carried out an acceptance inspection inspection to specification, the quantity of gravel material
It looks into, in advance by lining rope tripping in layering sealing position when filling out gravel, is surveyed when filling out, uniformly, slowly insert, keep away from well head surrounding when filling out gravel
Exempt to generate bridge formation clogging；
（3）Sealing：After first segment gravel material completes, stop waiting for 30min, measure gravel material height, fills out to postpone in place and start to fill out clay ball and stop
Water, first segment are layering sealing section, calculate clay ball dosage, clay is manually uniformly put into from aperture surrounding pipe outer ring-like gap
Ball measures at any time；After completing, stop waiting for 1 hour, measure clay ball height again, guarantee fills out water barrier height region, starts to fill out
Gravel material subsequently fills out gravel water sealing operation by above step progress.
9. the according to claim 6 4th is that deep-well is layered the water-stopping method that draws water, it is characterised in that：The step 7）Tool
Body method is：
Workspace is divided into four water-bearing layer groups, respectively the Ith water-bearing layer group, the IIth water-bearing layer group, the IIIth water-bearing layer group and
IV water-bearing layer group, 3 parts of deep well bailing test point carry out, and first carry out mixed pumping test, and second step carries out the IVth water-bearing layer
Component layers bailing test finally carries out the IIIth water-bearing layer component layers bailing test；Mixed pumping water routinely bailing test method into
Row observation；III, the IVth water-bearing layer component layers bailing test need to carry out layering sealing using antipriming in pipe, and isolation is up and down
Water-bearing layer prevents upper and lower water-bearing layer from ganging up；During being layered bailing test, at the same to the III, the IVth water-bearing layer group water level into
Row monitoring, to examine water-stagnating effect.
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| CN111173474A (en) * | 2020-01-13 | 2020-05-19 | 西南石油大学 | Water stopping device for layered water pumping test, water pumping test device and test method |
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| CN114278252A (en) * | 2021-12-20 | 2022-04-05 | 中煤地质集团有限公司 | Water stopping equipment for geological water pumping test and use method |
| CN115370328A (en) * | 2022-09-23 | 2022-11-22 | 青海省水文地质工程地质环境地质调查院 | Large-caliber dynamic water reverse circulation gravel pack well completion process |
| CN116480343A (en) * | 2023-06-14 | 2023-07-25 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Underground water layering monitoring well and well forming method thereof |
| CN116480343B (en) * | 2023-06-14 | 2023-09-05 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Underground water layering monitoring well and well forming method thereof |
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