CN109470622A - A kind of measurement method of formation permeability - Google Patents
A kind of measurement method of formation permeability Download PDFInfo
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- CN109470622A CN109470622A CN201811526702.8A CN201811526702A CN109470622A CN 109470622 A CN109470622 A CN 109470622A CN 201811526702 A CN201811526702 A CN 201811526702A CN 109470622 A CN109470622 A CN 109470622A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
Abstract
The invention discloses a kind of measurement methods of formation permeability, belong to technical field of geological exploration, it mainly include five steps, it installs, the measurement of the water pump of selection appropriate power, the liquid level measurement of formation permeability, the liquid level measurement of formation permeability and liquid level formation permeability when 1/3 depth in drilling when 2/3 depth in drilling in foot of hole, then pass through three balance liquid levels when permeability, can the overall merit rock stratum permeability.The present invention can automatically adjust the flow of water pump discharge ponding, easy to operate, can relatively accurately measure the permeability of rock stratum.
Description
Technical field
The invention belongs to technical field of geological exploration, and in particular to a kind of measurement method of formation permeability.
Background technique
" geological prospecting " is to be reconnoitred, detected to geology by various means, method, determines suitable supporting course,
According to the foundation bearing capacity of supporting course, type of foundation is determined, calculate the enquiry-based activity of underlying parameter.It is to search for mineral deposit
The middle mineral deposit for finding to have industrial significance provides mine construction for the quality and quantity for finding out mineral products, and the technical conditions that exploitation utilizes
The ore reserve and geologic information that design is wanted, to rock, stratum, construction, mineral products, the hydrology, the landforms etc. in a given area
Geological condition carries out enquiry based work.In geological prospecting borehole, underground water can be penetrated into drilling by drill hole inner wall, then
It needs to measure permeability.
When measurement, due to drilling internal water accumulation depth difference when, the flow of the infiltration water of rock stratum is different, so it is generally necessary to
It measures corresponding permeability when three 1/3 depth of the depth of accumulated water in drilling, 2/3 depth and bottom positions, is integrated with this
Evaluate the permeability of rock stratum, it is therefore desirable to which water pump is discharged in the flow for successively adjusting water pump by adjusting pump power three times
Flow hole wall infiltration water when being equal to corresponding water level flow.But since time of measuring is longer, if water pump is not specified
It works under power, damage water pump is easy to after long-time use, service life is reduced, so the mode taken in the prior art
It is that a three-way connection is connected on drinking-water pipe, three-way connection is located on ground, and three-way connection connects a return pipe again, returns
Water pipe is inserted into foot of hole.When pump working, a part of water in drinking-water pipe returns to drilling by three-way connection and return pipe
Interior, construction personnel passes through the flow for adjusting three-way connection three times on the ground, and the flow for allowing water pump to be discharged is equal to hole wall and permeates water
Flow, thus make drilling in liquid level reach balance three positions, three differences of flow rate calculation obtained by flow measurement
The permeability of rock stratum when liquid level, then the value of comprehensive three permeabilities can calculate the permeability of the rock stratum.
But there are some difficult points for aforesaid way, it is necessary first to adjust three-way connection to suitable flow, this is for applying
It is extremely difficult for worker person, because if the flow of three-way connection is too big, so that the flow of water pump discharge is permeated less than hole wall
The flow of water, then the water level in drilling can only decline a bit of depth and just reach balance water level, and cannot be in defined depth position
It sets and reaches balance water level, be unable to measure permeability；If the flow of three-way connection is too small, so that the flow of water pump discharge is greater than hole
Wall permeates the flow of water, then the ponding in drilling can be drained, and can not measure permeability.Secondly because return pipe is usually soft
Pipe, it is difficult to be smoothly inserted into lesser drilling, but be only placed in the entrance of drilling, make water flow along the wall of a borehole to flow down
It is dynamic, the regular hour is needed since water flows to the water surface, so that the people for adjusting three-way flowrate is difficult to accurately hold this time
Postpone and bring more fault, causes construction personnel's operation extremely difficult in this way, the accuracy of measurement is very low.
Summary of the invention
Object of the present invention is to: it is intended to provide a kind of measurement method of formation permeability, to automatically adjust water pump discharge drilling
The flow of ponding relatively accurately measures the permeability of rock stratum.
To realize the above-mentioned technical purpose, The technical solution adopted by the invention is as follows:
A kind of measurement method of formation permeability, mainly comprises the steps that
Step 1, installation.
After the completion of drilling, suitable and lower-powered water pump is rule of thumb selected first, then by the lower end of connecting tube
It is connect with the water outlet of water pump, the upper end of water pump is connect with lifting rope, and drinking-water pipe is then connected to connecting tube by connector again
Upper end, water pump, connecting tube and drinking-water pipe are gradually then put into foot of hole, while the cable of water pump is banded in drinking-water pipe
Tube wall on, when water pump reach foot of hole suitable position after, drinking-water pipe upper end is connected on the support frame with the upper end of lifting rope,
Then liquidometer is put into foot of hole suitable position, and on the support frame by the connection of the electric wire upper end of liquidometer, then existed again
Drinking-water pipe upper end connects drainpipe, and flowmeter is installed on drainpipe, starts water pump, and the ponding in drilling is passed through pumping by water pump
Water pipe discharges, and passes through the liquid level in liquidometer detection drilling, it is assumed that the drain discharge that flow measurement obtains is Q1, rock seepage
Flow be Q2,
(1) if drilling in liquid level decline it is a bit of after remain unchanged, illustrate Q1 < Q2, the power of this water pump is smaller, nothing
Method reaches measurement request, needs replacing the slightly larger water pump of power；The water pump that gradually selection power is sequentially increased install laggard
Row test then illustrates that Q1 > Q2, the power of water pump meet measurement when the ponding in drilling gradually decreases to foot of hole
It is required that the water pump to be determined as to the water pump of final choice；
(2) if the liquid level in drilling goes straight down to foot of hole, illustrate Q1 > Q2, in order to avoid the power of water pump is excessive
And cause connecting tube that can not play a role, need replacing the slightly smaller water pump of power；Gradually the water pump that is sequentially reduced of selection power into
It is tested after row installation, remains unchanged after the liquid level decline in drilling is a bit of, then illustrate Q1 < Q2, the function of this water pump
Rate is smaller, and the biggish water pump of power is determined as the water pump of final choice when the last time is measured.
Step 2, the measurement of liquid level formation permeability in foot of hole.
When original state, the ponding liquid level in drilling is higher, and water pump and connecting tube are submerged in ponding completely, the connection
It is connected with upper stopper and lower stopper on pipe, offers drainage hole, the company in the connecting tube between upper stopper and lower stopper
Adapter tube is external to be cased with floating drum between upper stopper and lower stopper, and floating drum abuts block in the buoyancy float downward of ponding,
Floating drum closes all drainage holes；
Start water pump, water pump discharges the ponding in drilling by drinking-water pipe, when initial, Q1 > Q2, then drilling in product
Water can gradually decrease；When the liquid level of ponding, which drops to floating drum top, to expose the surface, floating drum decline, water is exposed in partial drainage hole
Face, the part ponding in connecting tube passes through the partial drainage hole exposed the surface and returns in drilling, if returning to the ponding in drilling
Flow is Q3；With gradually decreasing for ponding liquid level, Q3 is gradually increased, and Q1 is gradually reduced, and when Q1 is reduced to Q1=Q2, liquid level reaches
When to stable state, the reading of flowmeter is read, the permeability for acquiring rock stratum in this liquid level can be calculated.
Step 3, the measurement of liquid level formation permeability when 2/3 depth in drilling.
It is first shut off water pump, water pump and drinking-water pipe are lifted up, water pump is made to rise to the position for interior 2/3 depth that drills,
When liquid level is restored to initial position, according to step 2, liquid level is made to reach equilbrium position again, read the reading of flowmeter at this time
Number, calculating acquire permeability of the rock stratum in this liquid level.
Step 4, the measurement of liquid level formation permeability when 1/3 depth in drilling.
It is first shut off water pump, water pump and drinking-water pipe are lifted up, water pump is made to rise to the position for interior 1/3 depth that drills,
When liquid level is restored to initial position, according to step 2, liquid level is made to reach equilbrium position again, read the reading of flowmeter at this time
Number, calculating acquire permeability of the rock stratum in this liquid level；Permeability when by three balance liquid levels, can the overall merit rock
The permeability of layer.
It further limits, the drainage hole is string configuration, along the circumferential direction offers at least four in the connecting tube
A drainage hole, the length of the floating drum are greater than the length of drainage hole.Ponding can be connected by the flow of drainage hole in this way
Continuous to adjust, the sensitivity for improving adjusting is higher, keeps the formation permeability measured more accurate.
It further limits, the drainage hole is borehole structure, and at least four column are along the circumferential direction offered in the connecting tube
Drainage hole, the length of the floating drum is greater than the distance between the top drainage hole to bottom drainage hole.The quantity of drainage hole is got over
More, when adjusting flow of the ponding by drainage hole, the sensitivity of adjusting is higher, keeps the formation permeability measured more accurate.
It further limits, is along the circumferential direction uniformly arranged in the upper stopper there are four hole for water spraying, on the inside of the hole for water spraying
Opening is connected to connecting tube, and the hole for water spraying outer openings are downward.In measurement, if soil that drill hole inner wall is fallen etc. will float
Gap between cylinder and drill hole inner wall blocks, and the water energy sprayed in hole for water spraying is enough to rinse out soil etc., prevents from blocking as far as possible.
It further limits, the lower surface of the upper stopper is connected with ring shaped retainers.Ring shaped retainers can be prevented from hole for water spraying
The water of ejection is flushed in drill hole inner wall, and the soil on inner wall is washed out, falls between water pump and drill hole inner wall and blocks water pump.
It further limits, the upper end of the floating drum is connected with sector.The water sprayed from hole for water spraying is punched in downwards sector
On blade, floating drum rotation is driven, to prevent the silt in water from entering the gap between floating drum and connecting tube and floating drum is stuck.
It further limits, the outer diameter of the upper stopper and lower stopper is greater than the outer diameter of floating drum.Water pump is being put into drilling bottom
When portion, since the outer diameter of upper stopper and lower stopper is greater than the outer diameter of floating drum, it can prevent floating drum from touching and scrape drill hole inner wall and will float
Cylinder damage.
It further limits, the floating drum is divided into floating drum and lower pontoon again, and the upper floating drum lower end is provided with inner cavity, described
It is intracavitary in the insertion of lower pontoon upper end, venthole is offered on the outer wall of the upper floating drum, the venthole is connected to inner cavity, described
Plug is connected in venthole.Before work, by adjusting depth intracavitary in lower pontoon insertion, so that the size of inner cavity is adjusted,
The buoyancy for changing floating drum, to adapt to the use of the drilling of different depth.
It further limits, fixed pulley is installed on support frame as described above, the lifting rope is connected on fixed pulley.When needing to adjust
When the height of water pump, fixed pulley is easy to operate convenient for pulling lifting rope.
Compared with prior art, the present invention the flow of water pump discharge drilling ponding can be automatically adjusted, without artificially adjusting
Section, it is not only easy to operate, and also measurement result is more accurate.
Detailed description of the invention
The present invention can be further illustrated by the nonlimiting examples that attached drawing provides；
Fig. 1 is the structural schematic diagram for implementing the measuring device that method of the invention uses；
Fig. 2 is the partial structural diagram in Fig. 1 at A；
Fig. 3 is the partial structural diagram in Fig. 2 at B；
Fig. 4 is the partial structural diagram in Fig. 2 at C；
Fig. 5 is the partial structural diagram for implementing the measuring device that method of the invention uses；
Main element symbol description is as follows:
Water pump 1, drinking-water pipe 2, drainpipe 3, support frame 4, flowmeter 5, lifting rope 6, cable 7, connecting tube 8, connector 81, upper stopper
82, hole for water spraying 821, lower stopper 83, drainage hole 84, floating drum 85, upper floating drum 851, lower pontoon 852, inner cavity 853, plug 854.
Specific embodiment
In order to make those skilled in the art that the present invention may be better understood, with reference to the accompanying drawings and examples to this hair
Bright technical solution further illustrates.
As shown in Figure 1, a kind of measurement method of formation permeability of the invention, mainly comprises the steps that
Step 1, installation.
It after the completion of drilling, needs first to be installed, rule of thumb selects suitable and lower-powered water pump 1 first, so
The lower end of connecting tube 8 is connect with the water outlet of water pump 1 afterwards, the upper end of water pump 1 is connect with lifting rope 6, adjusts water pump 1 for convenience
Height, fixed pulley is installed on support frame 4,6 upper end of lifting rope is wound on fixed pulley；The upper end of connecting tube 8 is connected with connection
First 81, the structure of connector 81 is similar to fire extinguisher canvas hose connector, and connector 81 and the connector of 2 lower end of drinking-water pipe are relatively rotated,
Drinking-water pipe 2 can be connected to the upper end of connecting tube 8, drinking-water pipe 2 is hose construction；Then it by water pump 1, connecting tube 8 and draws water
Pipe 2 is gradually put into foot of hole, while the cable of water pump 17 being gradually banded on the tube wall of drinking-water pipe 2 by multiple bands,
Floating drum 85, which touches, in order to prevent scrapes drill hole inner wall and damages floating drum 85, and the outer diameter of upper stopper 82 and lower stopper 83 is greater than floating drum 85
Outer diameter；
It (can be true according to the length of drilling depth and water pump 1 and connecting tube 8 after water pump 1 reaches foot of hole suitable position
It is fixed that lifting rope how long 6 and drinking-water pipe 2 is needed just water pump 1 to be made to reach foot of hole), by the upper end of drinking-water pipe 2 upper end and lifting rope 6
It is connected on support frame 4, liquidometer is then put into foot of hole suitable position (since the position of liquid level equilibrium is located at drainage hole
A certain position between 84, so needing for liquidometer to be put into the position below of drainage hole 84 to flood liquidometer in water
Set, this position can be acquired according to the length of drilling depth and water pump 1, connecting tube 8 and drinking-water pipe 2), and by the electricity of liquidometer
Line upper end is connected on support frame 4, then connects drainpipe 3 in 2 upper end of drinking-water pipe again, and install flowmeter on drainpipe 3
5。
Step 2 selects the water pump 1 of appropriate power.
Start water pump 1, water pump 1 discharges the ponding in drilling by drinking-water pipe 2, by liquidometer detection drilling
Liquid level, it is assumed that the drain discharge that flowmeter 5 measures is Q1, and the flow of rock seepage is Q2,
(1) if drilling in liquid level decline it is a bit of after remain unchanged, illustrate Q1 < Q2, the power of this water pump 1 is smaller, nothing
Method reaches measurement request, needs replacing the slightly larger water pump 1 of power；The water pump 1 that gradually selection power is sequentially increased is according to step 1
It is tested after being installed, when the ponding in drilling gradually decreases to foot of hole, then illustrates Q1 > Q2, water pump 1
Power meets the requirement of measurement, which is determined as to the water pump 1 of final choice；
(2) if the liquid level in drilling goes straight down to foot of hole, illustrate Q1 > Q2, in order to avoid the power mistake of water pump 1
Cause connecting tube 8 that can not play a role greatly, needs replacing the slightly smaller water pump 1 of power；The gradually water that selection power is sequentially reduced
Pump 1 is tested after being installed according to step 1, is remained unchanged after the liquid level decline in drilling is a bit of, is then illustrated Q1
The power of < Q2, this water pump 1 are smaller, and the biggish water pump 1 of power is determined as the water pump 1 of final choice when the last time is measured.
When selecting the water pump 1 of appropriate power, for the technical staff of somewhat experience, the water that uses for the first time
It is not very big for pumping with the final general gap of power for determining the water pump 1 used, so need to only verify on a small quantity several times, so that it may select
The water pump 1 of appropriate power.It is further to note that the water pump 1 that had better not select power very big at the very start, that may
Because power is excessive, cause to be drained even if drainage hole 84 is fully open, the ponding in drilling is still reduced, and is unable to measure
The permeability of rock stratum.Certainly the water pump of selection appropriate power is not steps necessary, by regulation power it is also possible that big function
Rate water pump is met the requirements, and the above method is taken to can be very good to reduce requirement of the test for equipment.
Step 3, the measurement of liquid level formation permeability in foot of hole.
When original state, the ponding liquid level in drilling is higher, and water pump 1 and connecting tube 8 are submerged in ponding completely, connecting tube
It is connected with upper stopper 82 and lower stopper 83 on 8, offers drainage hole 84 between upper stopper 82 and lower stopper 83 in connecting tube 8,
Connecting tube 8 is external to be cased with floating drum 85 between upper stopper 82 and lower stopper 83, floating drum 85 ponding buoyancy float downward, tightly
Against upper stopper 82, upper stopper 82 plays the role of limit to floating drum 85, and floating drum 85 closes all drainage holes 84；Connecting tube 8
There is certain gap between 85 inner wall of outer wall and floating drum, the frictional force mistake between connecting tube 8 and floating drum 85 can be prevented in this way
Cause floating drum 85 that can not float greatly, although having certain gap, the gap between 85 inner wall of 8 outer wall of connecting tube and floating drum
Smaller, the water being discharged from gap influences very little to the structure entirely measured, can almost ignore.
Start water pump 1, water pump 1 discharges the ponding in drilling by drinking-water pipe 2, in order to prevent the silt in ponding
Gap between 85 inner wall of 8 outer wall of connecting tube and floating drum, and floating drum 85 is stuck, as shown in figure 3, along circle in upper stopper 82
Circumferential direction is uniformly arranged there are four hole for water spraying 821, and 821 inside opening of hole for water spraying is connected to connecting tube 8, opens on the outside of hole for water spraying 821
Mouth down, the lower surface of upper stopper 82 are connected with ring shaped retainers, and the upper end of floating drum 85 is connected with sector (being not drawn into figure).
In measurement, ring shaped retainers can prevent the water sprayed from hole for water spraying 821 to be flushed in drill hole inner wall, and the soil on inner wall is rushed
Fall, the water sprayed from hole for water spraying 821 is punched on sector downwards, drives floating drum 85 to rotate, to prevent drill hole inner wall from falling
Silt or water in silt enter the gap between floating drum 85 and connecting tube 8 and floating drum 85 is stuck.
When initial, Q1 > Q2, then the ponding in drilling can be gradually decreased；When the liquid level of ponding drops to 85 top of floating drum dew
Out when the water surface, floating drum 85 declines, and partial drainage hole 84 is exposed the surface, and the part ponding in connecting tube 8 passes through the portion to expose the surface
Drainage hole 84 is divided to return in drilling, if returning to the flow of the ponding in drilling as Q3；With gradually decreasing for ponding liquid level, Q3 by
Cumulative big, Q1 is gradually reduced, and when Q1 is reduced to Q1=Q2, liquid level reaches stable state (even if liquid level reaches the liquid level of stable state
Hereinafter, due to Q3+Q2 > Q1 at this time, so liquid level is final or can reach stable state), read the reading of flowmeter 5
Calculating acquires permeability of the rock stratum in this liquid level.It is this by the calculating process that the reading of flowmeter 5 calculates formation permeability
The conventional technical means in field, details are not described herein again.
When being in different equilbrium positions due to liquid level, the infiltration water flow of rock stratum is different, so needing to test three differences
The permeability of rock stratum when balance liquid level.After the position of first liquid level equilibrium is measured, need to carry out other two liquid level
The measurement of permeability when equilbrium position.
Step 4, the measurement of liquid level formation permeability when 2/3 depth in drilling.
It is first shut off water pump 1, water pump 1 and drinking-water pipe 2 are lifted up, water pump 1 is made to rise to the position for interior 2/3 depth that drills
It sets, when liquid level is restored to initial position, according to step 3, liquid level is made to reach equilbrium position again, read flowmeter 5 at this time
Reading, calculating acquire permeability of the rock stratum in this liquid level.
Step 5, the measurement of liquid level formation permeability when 1/3 depth in drilling.
It is first shut off water pump 1, water pump 1 and drinking-water pipe 2 are lifted up, water pump 1 is made to rise to the position for interior 1/3 depth that drills
It sets, when liquid level is restored to initial position, according to step 3, liquid level is made to reach equilbrium position again, read flowmeter 5 at this time
Reading, calculating acquire permeability of the rock stratum in this liquid level；Permeability when by three balance liquid levels, can overall merit should
The permeability of rock stratum.
When stating method in use and measuring, as shown in Figure 2 and Figure 5, four are along the circumferential direction opened up in connecting tube 8
The drainage hole 84 of string configuration or the drainage hole 84 that four column borehole structures are along the circumferential direction opened up in connecting tube 8, it is practical
On, the quantity and structure of drainage hole 84 can as the case may be depending on；In order to enable floating drum 85 completely by 84 envelope of drainage hole
It closes, the length of floating drum 85 is greater than the length of drainage hole 84.
When stating method in use and measuring, as shown in figure 4, floating drum 85 is divided into floating drum 851 and lower pontoon 852 again,
Upper 851 lower end of floating drum is provided with inner cavity 853, and 852 upper end of lower pontoon is inserted into inner cavity 853, is offered on the outer wall of upper floating drum 851
Venthole, venthole are connected to inner cavity 853, and plug 854 is connected in venthole.In practical applications, due to various drillings
Depth is different, so need to use the water pump 1 of different size, when work, and hydraulic pressure of the liquid level in different depth, in connecting tube 8
Difference causes the hydraulic pressure sprayed from the drainage hole 84 for exposing liquid level also different, and the water of ejection has downward active force to floating drum 85,
Floating drum 85 is pushed down on, is changed by adjusting the depth that lower pontoon 852 is inserted into inner cavity 853 to adjust the size of inner cavity 853
The buoyancy size for becoming floating drum 85, with this thrust downward to floating drum 85 come the water for offsetting ejection, to adapt to the brill of different depth
The use in hole.
A kind of measurement method of formation permeability provided by the invention is described in detail above.Specific embodiment
Illustrate to be merely used to help understand method and its core concept of the invention.It should be pointed out that for the common skill of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for art personnel, these change
It is also fallen within the protection scope of the claims of the present invention into modification.
Claims (10)
1. a kind of measurement method of formation permeability, mainly comprises the steps that
Step 1, installation；
Connecting tube (8) is connect with water pump (1) first, the upper end of water pump (1) is connect with lifting rope (6), then passes through connector
(81) drinking-water pipe (2) is connected to the upper end of connecting tube (8), then water pump (1), connecting tube (8) and drinking-water pipe (2) are gradually put into
The upper end of drinking-water pipe (2) upper end and lifting rope (6) is then connected on support frame (4), then by liquid by foot of hole suitable position
Position meter is put into foot of hole suitable position, and the electric wire upper end of liquidometer is connected on support frame (4), finally again in drinking-water pipe
(2) upper end connection drainpipe (3), and flowmeter (5) are installed on drainpipe (3)；Start water pump (1), water pump (1) will be in drilling
Ponding discharged by drinking-water pipe (2), pass through the liquid level in liquidometer detection drilling, it is assumed that the row that flowmeter (5) measures
Water flow is Q1, and the flow of rock seepage is Q2；
Step 2, the measurement of liquid level formation permeability in foot of hole；
When original state, the ponding liquid level in drilling is higher, and water pump (1) and connecting tube (8) are submerged in ponding completely, the company
It is connected with upper stopper (82) and lower stopper (83) on adapter tube (8), offers drainage hole (84), the company on the connecting tube (8)
It is cased with floating drum (85) outside adapter tube (8), floating drum (85) abuts block (82), floating drum in the buoyancy float downward of ponding
(85) drainage hole (84) are closed；
Start water pump (1), water pump (1) discharges the ponding in drilling by drinking-water pipe (2), and when initial, Q1 > Q2 is then bored
Ponding in hole can gradually decrease；When the liquid level of ponding, which drops to floating drum (85) top, to expose the surface, floating drum (85) decline, portion
Drainage hole (84) are divided to expose the surface, the part ponding in connecting tube (8) passes through the partial drainage hole (84) exposed the surface and returns to brill
In hole, if the flow for returning to the ponding in drilling is Q3；With gradually decreasing for ponding liquid level, Q3 is gradually increased, and Q1 gradually subtracts
It is small, when Q1 is reduced to Q1=Q2, and liquid level reaches stable state, the reading of flowmeter (5) is read, can be calculated and be acquired rock stratum and exist
Permeability when this liquid level；
Step 3, the measurement of liquid level formation permeability when 2/3 depth in drilling；
It is first shut off water pump (1), water pump (1) is promoted to the position of 2/3 depth in drilling, is restored to initial position to liquid level
When, according to step 2, liquid level is made to reach equilbrium position again, read the reading of flowmeter (5) at this time, calculating acquires rock stratum herein
Permeability when liquid level；
Step 4, the measurement of liquid level formation permeability when 1/3 depth in drilling；
It is first shut off water pump (1), water pump (1) is promoted to the position of 1/3 depth in drilling, is restored to initial position to liquid level
When, according to step 2, liquid level is made to reach equilbrium position again, read the reading of flowmeter (5) at this time, calculating acquires rock stratum herein
Permeability when liquid level；Permeability when by three balance liquid levels, can the overall merit rock stratum permeability.
2. a kind of measurement method of formation permeability according to claim 1, it is characterised in that: the drainage hole (84) is
String configuration along the circumferential direction offers at least four drainage holes (84) on the connecting tube (8), the length of the floating drum (85)
Degree is greater than the length of drainage hole (84).
3. a kind of measurement method of formation permeability according to claim 1, it is characterised in that: the drainage hole (84) is
Borehole structure along the circumferential direction offers at least four column drainage holes (84), the length of the floating drum (85) on the connecting tube (8)
Greater than the distance between the top drainage hole (84) to bottom drainage hole (84).
4. a kind of measurement method of formation permeability according to claim 1, it is characterised in that: in the upper stopper (82)
It is provided with hole for water spraying (821), hole for water spraying (821) inside opening is connected to connecting tube (8), on the outside of the hole for water spraying (821)
It is opening down.
5. a kind of measurement method of formation permeability according to claim 4, it is characterised in that: on the upper stopper (82)
There are four being along the circumferential direction uniformly arranged hole for water spraying (821).
6. a kind of measurement method of formation permeability according to claim 5, it is characterised in that: the upper stopper (82)
Lower surface is connected with ring shaped retainers.
7. a kind of measurement method of formation permeability according to claim 6, it is characterised in that: the top of the floating drum (85)
Portion is connected with sector.
8. a kind of measurement method of formation permeability according to claim 1, it is characterised in that: the upper stopper (82) and
The outer diameter of lower stopper (83) is greater than the outer diameter of floating drum (85).
9. a kind of measurement method of formation permeability according to claim 1, it is characterised in that: the upper floating drum (851)
Lower end is provided with inner cavity (853), in lower pontoon (852) upper end insertion inner cavity (853), the outer wall of the upper floating drum (851)
On offer venthole, the venthole is connected to inner cavity (853), and plug (854) are connected in the venthole.
10. according to claim 1 to a kind of measurement method of formation permeability described in 9, it is characterised in that: support frame as described above
(4) fixed pulley is installed, the lifting rope (6) is connected on fixed pulley on.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110333332A (en) * | 2019-04-12 | 2019-10-15 | 重庆地质矿产研究院 | Intelligent water pumping experiment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06294116A (en) * | 1993-04-09 | 1994-10-21 | Kajima Corp | Water permeability tester of base rock |
| US20050178189A1 (en) * | 2002-02-21 | 2005-08-18 | Roland Lenormand | Method and device for evaluating physical parameters of an underground deposit from rock cuttings sampled therein |
| CN106198230A (en) * | 2016-07-04 | 2016-12-07 | 中国矿业大学 | Rock stratum physico-mechanical properties rapid measurement device and method |
| CN107831106A (en) * | 2017-12-29 | 2018-03-23 | 河北省地质学会 | Intelligent permeability survey testing stand |
| CN107894383A (en) * | 2017-11-03 | 2018-04-10 | 青岛海洋地质研究所 | Permeability measuring apparatus containing hydrate sediment and its method under condition of triaxial stress |
| CN108825294A (en) * | 2018-06-15 | 2018-11-16 | 平顶山天安煤业股份有限公司勘探工程处 | A kind of methane gas hole pumping and mining self-draining arrangement and method |
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2018
- 2018-12-13 CN CN201811526702.8A patent/CN109470622B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06294116A (en) * | 1993-04-09 | 1994-10-21 | Kajima Corp | Water permeability tester of base rock |
| US20050178189A1 (en) * | 2002-02-21 | 2005-08-18 | Roland Lenormand | Method and device for evaluating physical parameters of an underground deposit from rock cuttings sampled therein |
| CN106198230A (en) * | 2016-07-04 | 2016-12-07 | 中国矿业大学 | Rock stratum physico-mechanical properties rapid measurement device and method |
| CN107894383A (en) * | 2017-11-03 | 2018-04-10 | 青岛海洋地质研究所 | Permeability measuring apparatus containing hydrate sediment and its method under condition of triaxial stress |
| CN107831106A (en) * | 2017-12-29 | 2018-03-23 | 河北省地质学会 | Intelligent permeability survey testing stand |
| CN108825294A (en) * | 2018-06-15 | 2018-11-16 | 平顶山天安煤业股份有限公司勘探工程处 | A kind of methane gas hole pumping and mining self-draining arrangement and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333332A (en) * | 2019-04-12 | 2019-10-15 | 重庆地质矿产研究院 | Intelligent water pumping experiment system |
| CN110333332B (en) * | 2019-04-12 | 2022-03-15 | 重庆地质矿产研究院 | Intelligent water pumping experiment system |
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| CN109470622B (en) | 2021-01-26 |
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