CN208026344U - Multi-section multi-layer is the same as survey casing and inspection well - Google Patents
Multi-section multi-layer is the same as survey casing and inspection well Download PDFInfo
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- CN208026344U CN208026344U CN201820405974.1U CN201820405974U CN208026344U CN 208026344 U CN208026344 U CN 208026344U CN 201820405974 U CN201820405974 U CN 201820405974U CN 208026344 U CN208026344 U CN 208026344U
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- 238000007689 inspection Methods 0.000 title abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 173
- 239000012530 fluid Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 85
- 230000000903 blocking effect Effects 0.000 claims description 45
- 238000005259 measurement Methods 0.000 claims description 37
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 230000001012 protector Effects 0.000 claims description 9
- 210000002445 nipple Anatomy 0.000 claims description 6
- 239000012466 permeate Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 230000008961 swelling Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 22
- 238000009933 burial Methods 0.000 description 6
- 238000005553 drilling Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model is related to liquid level observing technical fields more particularly to a kind of multi-section multi-layer with survey casing and inspection well.The multi-section multi-layer includes multiple liquid-measuring tubes being sequentially communicated with casing is surveyed；Liquid-measuring tube includes the liquid-storing part being sequentially communicated, transparent liquid portion and blockades portion；The portion of blockading of liquid-measuring tube is connected to the liquid-storing part of adjacent liquid-measuring tube；Transparent liquid portion be used for the fluid connection in inspection well so that inside Liquid Penetrant to transparent liquid portion；The portion of blockading can cut off the access of liquid-measuring tube.The inspection well includes that liquid level emasuring device and multi-section multi-layer survey casing together；Liquid level emasuring device is arranged in multi-section multi-layer with the inside for surveying casing；Liquid level emasuring device includes with multi-section multi-layer with the one-to-one level sensor of liquid-measuring tube for surveying casing.The technical issues of the purpose of this utility model is to provide multi-section multi-layers with casing and inspection well is surveyed, and higher, engineering and Personnel Resources waste with the inspection well economy and time cost that solve the geographical location existing in the prior art with multi-layered aquifer.
Description
Technical Field
The utility model relates to a technical field is surveyed to the liquid level, especially relates to a multilayer section is with surveying sleeve pipe and observation well.
Background
The current industrial technology and means can only monitor aquifers with different underground burial depths in the same geographical position for a long time through a large-caliber well and a plurality of sleeves in a layering mode or a plurality of small-caliber single-sleeve drilling modes; this approach can create significant waste in the economic cost, time cost, engineering effort, and the scale of human equipment for the observation well.
Therefore, the application provides a novel multilayer section simultaneous-measurement casing and an observation well aiming at the problems, so as to reduce the economic cost and the time cost of the observation well for long-term observation of aquifers with different burial depths underground at the same geographical position, and also reduce the engineering construction amount and the scale of manual equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multilayer section is with surveying the sleeve pipe to solve the observation well economy that has the geographical position of multilayer aquifer that exists among the prior art and time cost is higher, engineering and personnel wasting of resources's technical problem.
The utility model aims at providing an inspection well still to solve the technical problem that the inspection well economy and the time cost of the geographical position that has the multilayer aquifer that exist among the prior art are higher, engineering and personnel wasting of resources.
Based on the first purpose, the utility model provides a multilayer section simultaneous measurement sleeve, which comprises a plurality of liquid measurement tubes which are sequentially communicated;
the liquid measuring tube comprises a liquid storage part, a liquid permeating part and a blocking part which are sequentially communicated; the blocking part of the liquid measuring tube is communicated with the liquid storage part of the adjacent liquid measuring tube;
the liquid permeating part is used for communicating with liquid in an observation well so as to enable the liquid to permeate into the liquid permeating part or permeate into the liquid permeating part and the liquid storage part;
the blocking portion can cut off a passage of the liquid measuring tube.
The optional technical proposal of the utility model is that the blocking part is provided with an inner expansion ring and an outer expansion ring; the inner expansion ring is fixedly arranged on the inner wall of the blocking part, and the outer expansion ring is fixedly arranged on the outer wall of the blocking part;
the inner expansion ring and the outer expansion ring are made of water-meeting self-expanding materials;
the inner expansion ring is used for cutting off the passage of the liquid measuring tube after being expanded;
the outer expansion ring is used for cutting off an axial passage of the observation well along the liquid measuring tube after being expanded.
The utility model adopts the optional technical proposal that the inner expansion ring and the outer expansion ring adopt water-swellable rubber;
a water-soluble film is fixedly arranged on the outer peripheral wall of the outer expansion ring;
the inner expansion ring and the outer expansion ring are arranged at the positions corresponding to the blocking part;
the periphery wall of the blocking portion is provided with a detachable second protection piece, and the outer expansion ring is arranged inside the second protection piece.
The optional technical proposal of the utility model is that the number of the inner expansion rings is a plurality, and a plurality of the inner expansion rings are arranged along the axial direction of the blocking part at intervals; and/or when the number of the outer expansion rings is multiple, the multiple outer expansion rings are arranged at intervals along the axial direction of the blocking part;
the spacing distance T between two adjacent inner expansion rings or between two adjacent outer expansion rings2：
0.5H1<T2<0.8H1；
0.2M<T2<0.5M；
A distance L between the inner expansion ring close to the liquid permeable part and the liquid permeable part2：L2Taking the low value of the two formulas;
the outer diameter of the outer expansion ring is 1.2-1.5 times of the outer diameter of the liquid measuring pipe; the inner diameter of the inner expansion ring is 0.4-0.7 times of the inner diameter of the liquid measuring pipe;
the water-swelling ratio of the outer swelling ring is 1.2-1.5; the water-swelling ratio of the inner swelling ring is 1.5-2;
the thickness of the outer expansion ring and the thickness of the inner expansion ring are both T1：
In the formula, H1Is the total head height of the water layer, H2The initial value of the water head and the initial thickness of the submerged flow, and M is the thickness of the bearing water-containing layer.
The utility model adopts the optional technical proposal that a water-soluble film is fixedly arranged on the outer peripheral wall of the liquid permeating part;
a plurality of liquid permeating holes for permeating liquid are densely distributed in the liquid permeating part; the water soluble film covers all the liquid permeable pores.
The utility model adopts the optional technical proposal that the outer peripheral wall of the liquid permeating part is provided with a detachable first protection piece, and the water soluble film is arranged inside the first protection piece;
diameter d of the liquid-permeable hole0：
H3 0/00<d0；
M0/000<d0；
In the formula, M is the thickness of the bearing water-containing layer; h3Is the thickness of the water-containing layer; d2The inside diameter of the dipstick.
The utility model has the optional technical proposal that the multilayer section same-measuring casing also comprises splicing pipes which are in one-to-one correspondence with the liquid measuring pipes; the continuous connection pipe is communicated with a liquid storage part of the liquid measuring pipe;
the continuous connection pipe and the liquid measuring pipe form a sleeve pipe group; the blocking part of the sleeve pipe group is communicated with the splicing pipe of the adjacent sleeve pipe group.
The optional technical proposal of the utility model is that the splicing pipe comprises at least one splicing sub pipe which is communicated in sequence;
the continuous connection pipe is in threaded connection or flange connection with the liquid storage part; and/or the continuous connecting pipe is in threaded connection or flange connection with the blocking part;
by usingThread depth Q of threaded connection and length h of liquid measuring tube2And the outer diameter D of the liquid measuring tube1The mutual relationship of (A) and (B) is as follows:
the utility model discloses an optional technical scheme do, the liquid survey pipe and/or the external diameter of continuing the takeover is D1Inner diameter of D2；D1And D2The relationship with the surface to the depth of the lowest aquifer H is:
D1＝10cm,H≤150m；
D2＝9.5cm,H≤150m；
in the pressure water layer, D1And D2The relationship of (1) is:in the formula, M is the thickness of the bearing water-containing layer; h1Is the total water head height of the water layer; h2The initial value of the water head and the initial thickness of the submerged flow are obtained;
length L of liquid-permeable part1：
0.3H1<L1；
0.25(M+H5)<L1；
L1<0.5h2；
In the formula, M is the thickness of the bearing water-containing layer; h1Is the total water head height of the water layer; h5Is the pressure bearing height; h is2The length of the liquid measuring tube; d1And D2In units of cm;
the actual thickness of each aquifer is the measured thickness of the aquifer minus the capillary water height hc(ii) a Wherein,where ρ is the density of water, g is the acceleration of gravity, α is the surface tension coefficient of the liquid, D2The inside diameter of the dipstick.
Based on the second purpose, the utility model provides an observation well, including liquid level measuring device and multilayer section simultaneous logging sleeve pipe;
the liquid level measuring device is arranged inside the multilayer section simultaneous measurement casing pipe;
the liquid level measuring device comprises liquid level measuring sensors which correspond to the liquid measuring tubes of the multilayer section same-measuring sleeve one to one.
The utility model has the advantages that:
the utility model provides a multilayer section simultaneous measurement casing, which comprises a plurality of liquid measurement tubes which are communicated in sequence; the liquid in the observation well is permeated into the liquid permeating part through the liquid permeating part of each liquid measuring tube, so that sensors such as liquid level measuring sensors and the like arranged in the multilayer section and the measuring sleeve can monitor related values; the passage of the liquid measuring pipe can be cut off through the blocking part of each liquid measuring pipe, so that the passage of the adjacent liquid measuring pipe is disconnected, and the monitoring accuracy is prevented from being influenced by the fact that the liquid of the upper layer flows into the interior of the lower layer. By adopting the multi-layer section simultaneous measurement casing, simultaneous observation of a plurality of aquifers with different underground burial depths at the same geographical position can be realized, the economic cost and the time cost of the observation well in the prior art of adopting a large-caliber well and carrying out layered monitoring on a plurality of casings or carrying out layered monitoring on a plurality of small-caliber wells through single casing drilling are reduced, and the engineering construction amount and the scale of manual equipment are greatly reduced.
The utility model provides an observation well, which comprises a liquid level measuring device and a multilayer section simultaneous measurement casing; the method can realize simultaneous observation of a plurality of aquifers with different underground burial depths in the same geographical position, reduce the economic cost and time cost of the observation well when the existing large-caliber well is formed and a plurality of casing pipes are used for layered monitoring or a plurality of small-caliber wells are used for single casing pipe drilling for layered monitoring, and greatly reduce the engineering construction amount and the scale of manual equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a first angle structure of a liquid measuring tube of a multi-layer simultaneous casing according to an embodiment of the present invention;
FIG. 2 is an enlarged view of area A of the fluid sensing tube of FIG. 1;
fig. 3 is a second angle structure diagram of the liquid measuring tube of the multi-layer simultaneous measuring sleeve according to an embodiment of the present invention;
FIG. 4 is an enlarged view of the liquid measuring tube shown in FIG. 3 in area B;
FIG. 5 is an enlarged view of the liquid measuring tube shown in FIG. 3 in the area B (hidden part structure);
fig. 6 is a schematic structural diagram of a multi-layer section simultaneous measurement casing according to an embodiment of the present invention;
FIG. 7 is a parametric illustration of the multi-layer section simultaneous casing shown in FIG. 6;
fig. 8 is a practical application state diagram of the multi-layer section simultaneous measurement casing according to the first embodiment of the present invention.
Icon: 100-liquid measuring tube; 110-a reservoir; 120-a liquid permeable section; 121-water soluble film; 122-liquid permeable pores; 130-blocking part; 131-an inner expansion ring; 132-an outer expansion loop; 133-a second protector; 200-take over.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1-8, the present embodiment provides a multi-layer simultaneous casing; fig. 1 is a front view of a liquid measuring tube of a multi-layer casing according to the present embodiment, in which a lower half portion of the liquid measuring tube in fig. 1 is shown in a cross-sectional view to show a structure more clearly, and fig. 2 is an enlarged view of a region a of the liquid measuring tube in fig. 1; FIG. 3 is a perspective view of a fluid measuring tube of the multi-layer sleeve of the present embodiment, FIG. 4 is an enlarged view of a region B of the fluid measuring tube shown in FIG. 3, and FIG. 5 is an enlarged view of a hidden water-soluble film and a half of the second protecting member of the fluid measuring tube shown in FIG. 3; FIG. 6 is a schematic structural diagram of a multi-layer simultaneous measurement casing according to this embodiment; FIG. 7 is a parametric illustration of the multi-layer section simultaneous casing shown in FIG. 6; fig. 8 is a practical application state diagram of the multi-layer section simultaneous measurement casing provided by the embodiment.
Referring to fig. 1 to 8, the multi-layer section simultaneous measurement casing provided by this embodiment is suitable for observation wells such as hydrological wells, and is particularly suitable for observation wells at the same geographical position with two or more layers of different buried aquifers. The observation well can be used for liquid level monitoring, liquid temperature monitoring and the like.
The multilayer section simultaneous measurement casing comprises a plurality of liquid measurement pipes 100 which are sequentially communicated; alternatively, the fluid-sensing tubes 100 correspond one-to-one to the aquifers, i.e., the number of fluid-sensing tubes 100 is the same as the number of aquifers.
The liquid measuring tube 100 comprises a liquid storage part 110, a liquid permeating part 120 and a blocking part 130 which are sequentially communicated; the blocking part 130 of the liquid measuring tube 100 is communicated with the liquid storage part 110 of the adjacent liquid measuring tube 100;
the liquid permeable part 120 is used for communicating with liquid in the observation well, so that the liquid permeates into the liquid permeable part 120, or so that the liquid permeates into the liquid permeable part 120 and the liquid storage part 110;
the blocking portion 130 can cut off the passage of the liquid measuring tube 100.
In this embodiment, the multi-layer section simultaneous measurement casing includes a plurality of liquid measurement tubes 100 sequentially connected; the liquid in the observation well is made to penetrate into the liquid penetrating part 120 through the liquid penetrating part 120 of each liquid measuring tube 100, so that the sensors such as liquid level measuring sensors and the like arranged in the multilayer section and the measuring sleeve can monitor related values; the path of the liquid measuring tube 100 can be cut off by the blocking part 130 of each liquid measuring tube 100, so that the path of the adjacent liquid measuring tube 100 is cut off, and the liquid in the previous layer is prevented from flowing into the next layer to influence the monitoring accuracy. By adopting the multi-layer section simultaneous measurement casing, simultaneous observation of a plurality of aquifers with different underground burial depths at the same geographical position can be realized, the economic cost and the time cost of the observation well in the prior process of adopting a large-caliber well and monitoring a plurality of casings in a layered mode or monitoring a plurality of small-caliber wells in a single casing drilling in a layered mode are reduced, the engineering construction amount and the scale of manual equipment are greatly reduced, and a large amount of cost is saved.
Compared with the large-caliber well formation and the layered monitoring of a plurality of casings and the layered monitoring of the drilling of a single casing of a plurality of small-caliber wells, the multilayer section simultaneous-measurement casing has the advantages that the occupied area is small, and the monitoring and the management are simple and convenient.
In the alternative of this embodiment, the blocking portion 130 can cut off the passage of the liquid measuring tube 100 by means of an electrically controlled mechanical structure, or by the characteristics of the material itself. For example, the liquid permeating the liquid permeable part 120 can cause the blocking part 130 to cut off the passage of the liquid measurement tube 100.
Referring to fig. 1 and 2, in an alternative of the present embodiment, the blocking portion 130 is provided with an inner expansion ring 131 and an outer expansion ring 132; the inner expansion ring 131 is fixedly arranged on the inner wall of the blocking part 130, and the outer expansion ring 132 is fixedly arranged on the outer wall of the blocking part 130;
optionally, inner expansile loop 131 and outer expansile loop 132 are of a water-self-expanding material; the water-swellable material may be, for example, water-swellable rubber, water-swellable resin, or the like; optionally, inner expansile loop 131 and outer expansile loop 132 are formed of water-swellable rubber.
Optionally, the inner expansion ring 131 is used to cut off the path of the liquid measuring tube 100 after expansion;
optionally, the outer expansile loop 132 is used to cut off the path of the observation well in the axial direction of the dipstick 100 after expansion. By arranging the inner expansion ring 131 and the outer expansion ring 132, after the blocking part 130 reaches the corresponding aquifer, the outer expansion ring 132 is expanded with water to cut off the axial passage of the observation well along the liquid measuring tube 100, namely, the water in the aquifer is prevented from flowing into the next aquifer along the outer wall of the liquid measuring tube 100; and the inner expansion ring 131 expands when meeting water to cut off the passage of the liquid measuring tube 100, namely, the water in the water-containing layer is prevented from flowing into the next water-containing layer along with the inner cavity of the liquid measuring tube 100; thereby improving the accuracy of monitoring for each aquifer.
In the alternative of this embodiment, the outer peripheral wall of the outer expansion ring 132 is fixedly provided with a water-soluble film (not shown in the figure); ineffective expansion of the outer expansile loop 132 is prevented by a water soluble film. For example, the fluid logging pipe 100 corresponding to the next aquifer may have a high probability of causing the outer expansile loop 132 of the fluid logging pipe 100 to expand as it passes through the previous aquifer, and the expanded outer expansile loop 132 may have a risk of affecting the continued lowering of the observation well with the casing in multiple zones.
In an alternative of the present embodiment, the inner expansion ring 131 and the outer expansion ring 132 are provided at positions corresponding to the blocking portion 130; the acting force of the expanded inner expansion ring 131 and the outer expansion ring 132 is at the same position of the blocking part 130, so that the deformation and the damage of the blocking part 130 caused by the long-term acting force of the inner expansion ring 131 or the outer expansion ring 132 at different positions of the blocking part 130 are reduced or avoided, and the service life of the blocking part 130 is prolonged.
In an alternative of the present embodiment, the outer peripheral wall of the blocking portion 130 is provided with a second protector 133 that is removable, and the outer expansion ring 132 is provided inside the second protector 133; breakage of the outer expansion ring 132 during transport is reduced or avoided by the second protector 133.
The second protection member 133 may be, for example, a hoop or other protection structure.
Referring to fig. 2, in an alternative of this embodiment, the number of inner expansion rings 131 is at least one; optionally, the number of the inner expansion rings 131 is plural, and the plural inner expansion rings 131 are arranged at intervals along the axial direction of the blocking portion 130.
Referring to fig. 2 and 6, in an alternative embodiment, the number of outer expansion rings 132 is at least one; alternatively, the number of the outer expansion rings 132 is plural, and the plural outer expansion rings 132 are provided at intervals in the axial direction of the blocking portion 130.
Optionally, the number of outer expansion loops 132 is the same as the number of inner expansion loops 131.
Optionally, the spacing distance T between two adjacent inner expansion rings 131 or two adjacent outer expansion rings 1322：
0.5H1<T2<0.8H1；
0.2M<T2<0.5M；
In the formula, H1The total water head height of the water layer, and M is the thickness of the bearing water layer;
that is, the interval distance T between two adjacent inner expansion rings 131 or between two adjacent outer expansion rings 1322Height H of total water head of water layer1And the confined aquifer thickness M.
Optionally, the outer diameter of the outer expansion loop 132 is 1.2-1.5 times the outer diameter of the dipstick 100; optionally, the inner diameter of the inner expansion loop 131 is between 0.4 and 0.7 times the inner diameter of the dipstick 100. The outer diameter of the outer expansile loop 132 (i.e., the original outer diameter of the outer expansile loop 132) and the inner diameter of the inner expansile loop 131 (i.e., the original inner diameter of the inner expansile loop 131) may depend on the outer diameter and inner diameter of the fluid measurement tube 100.
Optionally, outer expansile loop 132 has a water-swellable ratio of 1.2-1.5; optionally, inner expansile loop 131 has a water-swellable ratio of 1.5-2. The water-swell ratio of outer swell ring 132 and the inner diameter of inner swell ring 131 may be designed to adjust the coefficients according to actual requirements.
Optionally, the thickness of the outer expansion ring 132 and the inner expansion ring 131 are both T1：
In the formula, M is the thickness of the bearing water-containing layer; h1Is the total head height of the water layer.
That is, the thickness T of the outer expansion ring 132 and the inner expansion ring 1311Height H of total water head of water layer1The thickness M of the confined aquifer.
In an alternative of this embodiment, the distance L between the inner expansile loop adjacent to the liquid permeable section and the liquid permeable section 1202：L2Taking the low value of the two formulas; in the formula, M is the thickness of the bearing water-containing layer; h2The initial value of the water head and the initial thickness of the submerged flow are obtained;
L2the length of the sediment is reserved for the blocking part 130, the self-blocking effect can be generated through the gravity sedimentation effect of the natural gravel of the aquifer, and therefore the pressure of the confined water can be as small as possible.
In an alternative of this embodiment, a water-soluble film 121 is fixedly provided on the outer peripheral wall of the liquid-permeable part 120; the liquid of the non-preset aquifer is prevented from entering the multi-section simultaneous measurement casing through the liquid permeable part 120 by the water soluble film 121, so that the accuracy of monitoring a plurality of aquifer parameters by adopting the multi-section simultaneous measurement casing is improved.
Optionally, the liquid-permeable section 120 is densely covered with a plurality of liquid-permeable holes 122 for permeating liquid; the water-soluble film 121 covers the entire liquid-permeable holes 122.
In an alternative of the present embodiment, the outer peripheral wall of the liquid-permeable section 120 is provided with a first protector (not shown) that is detachable, and the water-soluble film 121 is provided inside the first protector; the first protector protects the aqueous film 121 and the liquid-permeable part 120, and prevents or reduces damage to the aqueous film 121 and the liquid-permeable part 120 during transportation.
Alternatively, the diameter d of the liquid-permeable hole 1220：
H3 0/00<d0；
M0/000<d0；
In the formula, M is the thickness of the bearing water-containing layer; h3Is the thickness of the water-containing layer; d2The inside diameter of the dipstick 100.
That is, the diameter d of the liquid-permeable hole 122 of the liquid-permeable section 1200With the thickness H of the aquifer3Thickness M of confined aquifer and inner diameter D of liquid measuring tube 1002It is related.
Referring to fig. 6 and 7, in an alternative embodiment, the multi-segment simultaneous measurement casing includes splicing tubes 200 in one-to-one correspondence with the measurement tubes 100; the continuous connection pipe 200 is communicated with the liquid storage part 110 of the liquid measuring pipe 100;
the continuous connection pipe 200 and the liquid measuring pipe 100 form a sleeve pipe group; the block 130 of a cannula set is in communication with the splice tubes 200 of an adjacent cannula set. The length of the liquid measuring tube 100 is reduced by the continuous connection tube 200, so that the liquid measuring tube 100 can be conveniently processed and manufactured, and the multilayer section simultaneous measuring sleeve can be conveniently processed and assembled.
In an alternative of this embodiment, the continuous connection pipe 200 includes at least one continuous connection pipe communicated in sequence;
the continuous connection pipe 200 is connected with the liquid storage part 110 by adopting a thread or a flange; and/or the continuous connection pipe 200 and the blocking part 130 are connected by adopting a thread or a flange.
Alternatively, for a multi-layer simultaneous casing, a corresponding number of dipsticking tubes 100 and a corresponding number of splicing tubes 200 are required, and the relationship between them can be expressed as:
H＝n1×h1+n2×h2；
in the formula, H is the depth from the earth's surface to the lowest water-containing layer and is basically the length of a multi-layer section simultaneous measurement casing; h is1The length of the nipple 200; n is1The number of the splicing tubes 200; h is2The length of the dipstick 100; n is2The number of dipstick 100.
Optionally, the thread depth Q of the threaded connection is related to the length h of the fluid measuring tube 1002And the outer diameter D of the liquid measuring tube 1001The mutual relationship of (A) and (B) is as follows:
optionally, the nipple 200 has an outer diameter that is the same or substantially the same as the outer diameter of the dipstick 100.
Optionally, the inner diameter of the wand 200 is the same as or substantially the same as the inner diameter of the dipstick 100.
Referring to fig. 7 and 8, in an alternative embodiment, the outer diameter of the liquid measuring tube 100 and/or the nipple 200 is D1Inner diameter of D2；D1And D2The relationship with the surface to the depth of the lowest aquifer H is:
D1＝10cm,H≤150m；
D2＝9.5cm,H≤150m；
in the formula, D1And D2In cm.
By pair D1And D2To ensure the working strength of the dipstick 100 and/or the adapter 200, and thus the cannula set.
Alternatively, in a layer of pressurized water, according to the principle of continuity of water flow:
single wide flow q of pressure-bearing water section1Comprises the following steps:
single wide flow q of non-pressure water flow area2Comprises the following steps:
according to the principle of water flow continuity, the method comprises the following steps: q. q.s1＝q2；
Then there are:
thus, in the layer of confined water, D1And D2The relationship of (1) is:in the formula, M is the thickness of the bearing water-containing layer; h1Is the total water head height of the water layer; h2The initial value of the water head and the initial thickness of the submerged flow are obtained; k is the permeability coefficient.
Wherein H2＝S+H1And S is the water level depth reduction or elevation distance.
In an alternative of the present embodiment, the length L of the liquid-permeable part 1201：
0.3H1<L1；
0.25(M+H5)<L1；
L1<0.5h2；
In the formula, M is the thickness of the bearing water-containing layer; h1Is the total water head height of the water layer; h5Is the pressure bearing height; h is2The length of the dipstick 100;
that is, the length L of the liquid permeable part 120 is limited1Height H of total water head of water layer1Thickness M of confined aquifer, and confined height (namely, manometric height) H5And the length h of the dipstick 1002It is related.
In an alternative embodiment, the actual thickness of each aquifer is the measured thickness of the aquifer minus the capillary water height hc(ii) a Wherein,where ρ is the density of water, g is the acceleration of gravity, α is the surface tension coefficient of the liquid, D2The inside diameter of the dipstick 100.
Due to the inner diameter D of the liquid measuring tube 1002The depth H from the surface to the lowest water-bearing layer is small, which causes a capillary phenomenon, and the thickness of the water-bearing layer in the liquid measuring tube 100 is higher than the true water level by the capillary water height.
It should be noted that the following parameters are relevant parameters for each aquifer:
H1: water layer total head height;
H2: initial value of water head and initial thickness of submerged flow;
H3: the thickness of the water-containing layer;
H4: the height of the artesian water head;
H5: pressure bearing height (pressure measuring height);
m: the thickness of the bearing water-containing layer;
s: the water level is lowered or raised by a distance.
Optionally, in this embodiment, the length of the multi-layer section simultaneous casing is not more than 1000m, so as to ensure the monitoring effect of the observation well. Optionally, the number of the liquid measuring tubes is not more than 10, so that the monitoring effect of the observation well is ensured.
Example two
The second embodiment provides an observation well, the embodiment comprises the multilayer section simultaneous casing described in the first embodiment, the technical characteristics of the multilayer section simultaneous casing disclosed in the first embodiment are also applicable to the embodiment, and the technical characteristics of the multilayer section simultaneous casing disclosed in the first embodiment are not repeatedly described.
The observation well provided by the embodiment can be used for liquid level monitoring, temperature monitoring and the like of the underground aquifer.
The observation well comprises a liquid level measuring device and a multi-layer section simultaneous measurement casing pipe;
the liquid level measuring device is arranged inside the multi-layer section simultaneous measurement casing pipe;
the liquid level measuring device comprises liquid level measuring sensors which correspond to the liquid measuring tubes of the multilayer section same-measuring sleeve one by one. The liquid level measuring sensors which are in one-to-one correspondence with the liquid measuring pipes are used for layering and simultaneously monitoring the liquid level change of each aquifer. The observation well can realize simultaneous observation of a plurality of underground aquifers with different burial depths at the same geographical position, so that the economic cost and the time cost of the observation well in the prior art when a large-caliber well is formed and a plurality of sleeves are used for layered monitoring or a plurality of small-caliber wells are used for single sleeve drilling and layered monitoring are reduced, and the engineering construction amount and the scale of manual equipment are greatly reduced.
The observation well in this embodiment has the advantages of the multi-interval logging casing of embodiment one, and the advantages of the multi-interval logging casing disclosed in embodiment one will not be described repeatedly herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A multilayer section simultaneous measurement casing is characterized by comprising a plurality of liquid measurement tubes which are sequentially communicated;
the liquid measuring tube comprises a liquid storage part, a liquid permeating part and a blocking part which are sequentially communicated; the blocking part of the liquid measuring tube is communicated with the liquid storage part of the adjacent liquid measuring tube;
the liquid permeating part is used for communicating with liquid in an observation well so as to enable the liquid to permeate into the liquid permeating part or permeate into the liquid permeating part and the liquid storage part;
the blocking portion can cut off a passage of the liquid measuring tube.
2. The multi-layer section simultaneous casing according to claim 1, wherein the blocking portion is provided with an inner expansion ring and an outer expansion ring; the inner expansion ring is fixedly arranged on the inner wall of the blocking part, and the outer expansion ring is fixedly arranged on the outer wall of the blocking part;
the inner expansion ring and the outer expansion ring are made of water-meeting self-expanding materials;
the inner expansion ring is used for cutting off the passage of the liquid measuring tube after being expanded;
the outer expansion ring is used for cutting off an axial passage of the observation well along the liquid measuring tube after being expanded.
3. The multi-layer section simultaneous measurement sleeve according to claim 2, wherein said inner expansion loop and said outer expansion loop are of water-swellable rubber;
a water-soluble film is fixedly arranged on the outer peripheral wall of the outer expansion ring;
the inner expansion ring and the outer expansion ring are arranged at the positions corresponding to the blocking part;
the periphery wall of the blocking portion is provided with a detachable second protection piece, and the outer expansion ring is arranged inside the second protection piece.
4. The multi-layer simultaneous measurement casing according to claim 2, wherein the number of the inner expansion rings is plural, and the plural inner expansion rings are arranged at intervals in the axial direction of the blocking portion; and/or when the number of the outer expansion rings is multiple, the multiple outer expansion rings are arranged at intervals along the axial direction of the blocking part;
the spacing distance T between two adjacent inner expansion rings or between two adjacent outer expansion rings2：
0.5H1<T2<0.8H1；
0.2M<T2<0.5M；
Internal expansion near the liquid permeable sectionDistance L between the ring and the liquid permeable part2：L2Taking the low value of the two formulas;
the outer diameter of the outer expansion ring is 1.2-1.5 times of the outer diameter of the liquid measuring pipe; the inner diameter of the inner expansion ring is 0.4-0.7 times of the inner diameter of the liquid measuring pipe;
the water-swelling ratio of the outer swelling ring is 1.2-1.5; the water-swelling ratio of the inner swelling ring is 1.5-2;
the thickness of the outer expansion ring and the thickness of the inner expansion ring are both T1：
In the formula, H1Is the total head height of the water layer, H2The initial value of the water head and the initial thickness of the submerged flow, and M is the thickness of the bearing water-containing layer.
5. The multi-layer section simultaneous measurement cannula according to claim 1, wherein a water-soluble film is fixedly provided on the outer peripheral wall of the liquid permeable section;
a plurality of liquid permeating holes for permeating liquid are densely distributed in the liquid permeating part; the water soluble film covers all the liquid permeable pores.
6. The multi-stage homology sleeve of claim 5, wherein the outer peripheral wall of the liquid permeable portion is provided with a first removable protector, the water-soluble film being provided inside the first protector;
diameter d of the liquid-permeable hole0：
H3 0/00<d0；
M0/000<d0；
In the formula, M is the thickness of the bearing water-containing layer; h3Is the thickness of the water-containing layer; d2The inside diameter of the dipstick.
7. The multi-layer simultaneous measurement sleeve according to claim 1, further comprising a splicing tube in one-to-one correspondence with the measurement tube; the continuous connection pipe is communicated with a liquid storage part of the liquid measuring pipe;
the continuous connection pipe and the liquid measuring pipe form a sleeve pipe group; the blocking part of the sleeve pipe group is communicated with the splicing pipe of the adjacent sleeve pipe group.
8. The multi-layer length of simultaneous casing according to claim 7, wherein the nipple comprises at least one nipple tube in communication with one another;
the continuous connection pipe is in threaded connection or flange connection with the liquid storage part; and/or the continuous connecting pipe is in threaded connection or flange connection with the blocking part;
thread depth Q and length h of liquid measuring tube connected by threads2And the outer diameter D of the liquid measuring tube1The mutual relationship of (A) and (B) is as follows:
9. multi-layer section simultaneous casing according to claim 7, wherein the outer diameter of the dipstick and/or the nipple is D1Inner diameter of D2；D1And D2The relationship with the surface to the depth of the lowest aquifer H is:
D1＝10cm,H≤150m；
D2＝9.5cm,H≤150m；
in the pressure water layer, D1And D2The relationship of (1) is:in the formula, M is the thickness of the bearing water-containing layer; h1Is the total water head height of the water layer; h2The initial value of the water head and the initial thickness of the submerged flow are obtained;
length L of liquid-permeable part1：
0.3H1<L1；
0.25(M+H5)<L1；
L1<0.5h2；
In the formula, M is the thickness of the bearing water-containing layer; h1Is the total water head height of the water layer; h5Is the pressure bearing height; h is2The length of the liquid measuring tube; d1And D2In units of cm;
the actual thickness of each aquifer is the measured thickness of the aquifer minus the capillary water height hc(ii) a Wherein,where ρ is the density of water, g is the acceleration of gravity, α is the surface tension coefficient of the liquid, D2The inside diameter of the dipstick.
10. An observation well comprising a fluid level measuring device and the multi-interval simultaneous casing of any one of claims 1-9;
the liquid level measuring device is arranged inside the multilayer section simultaneous measurement casing pipe;
the liquid level measuring device comprises liquid level measuring sensors which correspond to the liquid measuring tubes of the multilayer section same-measuring sleeve one to one.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108168645A (en) * | 2018-03-23 | 2018-06-15 | 中国矿业大学(北京) | Multi-section multi-layer is the same as survey casing and inspection well |
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