CN109577953B - Drilling fluid liquid level monitoring device - Google Patents
Drilling fluid liquid level monitoring device Download PDFInfo
- Publication number
- CN109577953B CN109577953B CN201811635916.9A CN201811635916A CN109577953B CN 109577953 B CN109577953 B CN 109577953B CN 201811635916 A CN201811635916 A CN 201811635916A CN 109577953 B CN109577953 B CN 109577953B
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- China
- Prior art keywords
- outer sleeve
- connecting wire
- inner sleeve
- electric connecting
- drilling fluid
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- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 title claims abstract description 21
- 238000012806 monitoring device Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 title abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 9
- 230000002441 reversible effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
Abstract
The invention discloses a drilling fluid level monitoring device, which relates to the technical field of safety measurement and comprises a counter beam and a ground anchor fixed with the counter beam; the reverse beam is provided with a fixing hole, a detection mechanism is inserted into the fixing hole, the detection mechanism comprises an outer sleeve inserted in the fixing hole in a sliding manner and an inner sleeve inserted in the outer sleeve, and the upper end of the inner sleeve is connected with a first electric connecting wire; a second electric connecting wire is inserted into the inner sleeve, the second electric connecting wire is positioned in the center of the inner sleeve, and the lower end of the second electric connecting wire is connected with a loop trigger; and a voltmeter is connected between the first electric connecting wire and the second electric connecting wire. The invention can effectively detect the liquid level in the well, has the advantages of accurate measurement, simple structure, low cost and convenient use, and can be used for monitoring the liquid level or other fields needing to seal the well bore.
Description
Technical Field
The invention relates to the technical field of safety measurement, in particular to a drilling fluid level monitoring device.
Background
In the well repairing process of building construction, well drilling well leakage, well testing well repairing operation well leakage and low pressure coefficient well repairing, well leakage can occur in the well bore when the liquid column pressure of the well bore is larger than the stratum pressure, so that the liquid level in the well bore is required to be monitored in real time to clearly grasp and judge the dynamic change condition of the depth of the underground liquid level, and well control risks in the well drilling well and well testing well repairing operation process are effectively reduced.
In construction, drilling and workover operations, the liquid level of a shaft cannot be accurately measured due to lost circulation. The approximate depth of the fluid level is typically inferred by traces left by the fluid on the drilling tool or tubing. The traditional measuring method adopts manual measurement, and the actual position of the liquid level in the shaft cannot be accurately mastered because traces of the liquid in the well left on the pipe column are subjected to vibration, improper operation and the like. Particularly when the liquid level in the well is deep (for example, more than 500 meters), the whole process of engineering construction is long, so that the investigation period and the construction period of the field are long in time, the water level in the investigation period can float during construction, and the current liquid level depth in the well shaft cannot be known accurately.
Disclosure of Invention
The invention aims to provide a drilling fluid level monitoring device which is convenient for people to monitor the level of a drilling fluid.
In order to achieve the aim of the invention, the technical scheme adopted is as follows: a drilling fluid level monitoring device comprises a counter beam and a ground anchor fixed with the counter beam; the reverse beam is provided with a fixing hole, a detection mechanism is inserted into the fixing hole, the detection mechanism comprises an outer sleeve inserted in the fixing hole in a sliding manner and an inner sleeve inserted in the outer sleeve, and the upper end of the inner sleeve is connected with a first electric connecting wire; a second electric connecting wire is inserted into the inner sleeve, the second electric connecting wire is positioned in the center of the inner sleeve, and the lower end of the second electric connecting wire is connected with a loop trigger; and a voltmeter is connected between the first electric connecting wire and the second electric connecting wire.
Further, an insulating positioning ring is fixedly arranged on the first electric connecting wire, and the insulating positioning ring is positioned in the inner sleeve.
Further, the large diameter of the insulating positioning ring is in clearance fit with the inner diameter of the inner sleeve.
Furthermore, the lower end of the outer sleeve is in an inverted cone shape, and the lower end of the outer sleeve is provided with a water inlet.
Further, the outer sleeve is further provided with a sealing sheet, the sealing sheet is divided into a plurality of sector-shaped petals, and the edges of the sector-shaped petals are hinged with the inner wall of the outer sleeve respectively; the inner wall of the outer sleeve is fixedly provided with a plurality of abutting springs, and the upper ends of the abutting springs are respectively fixed with the sector petals one by one.
Further, a guide bar is arranged on the outer sleeve, and a guide groove matched with the guide bar is formed in the inner wall of the fixing hole; the upper end of the inner sleeve is provided with external threads, and the upper end of the outer sleeve is provided with internal threads matched with the external threads.
Further, the upper end of the inner sleeve is also provided with a limiting edge table.
Further, scale marks are marked on the second electric connection line.
Further, the inner sleeve and the outer sleeve are radially arranged at intervals.
Furthermore, a plurality of fixing holes are formed, and detection mechanisms are inserted into the plurality of fixing holes.
Further, at least two ground anchors are provided, and a plurality of ground anchors are symmetrically arranged along the center of the mounting plate.
The invention has the advantages that,
according to the invention, the loop trigger is arranged at the lower end of the second electric connecting wire, when the loop trigger contacts with the liquid level entering the outer sleeve, the second electric connecting wire, the liquid, the inner sleeve, the second electric connecting wire and the voltmeter form a loop, and the voltmeter starts to rotate at the moment, so that the height of the liquid level is detected; when the loop trigger is not contacted with the liquid level in the outer sleeve, the second electric connecting wire is disconnected with the inner sleeve, so that the first electric connecting wire is not communicated with the second electric connecting wire, and the voltmeter is not rotated.
The invention can effectively detect the liquid level in the well, has the advantages of accurate measurement, simple structure, low cost and convenient use, and can dynamically monitor the change of the underground water level. The invention may also be used in fluid level monitoring or other applications where a well bore needs to be sealed.
Drawings
FIG. 1 is a block diagram of a drilling fluid level monitoring apparatus provided by the present invention;
FIG. 2 is an enlarged partial view of portion A of FIG. 1;
fig. 3 is a top view of the outer sleeve of fig. 1.
The reference numerals and corresponding part names in the drawings:
1. the device comprises a counter beam, 2, a ground anchor, 3, a fixed hole, 4, an outer sleeve, 5, an inner sleeve, 6, a first electric connecting wire, 7, a second electric connecting wire, 8, a loop trigger, 9, a voltmeter, 10, an insulating positioning ring, 11, a water inlet hole, 12, a sector valve, 13, a tight spring, 14, a guide bar, 15, a guide groove, 16, external threads, 17, internal threads, 18 and a limit edge table.
Detailed Description
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
Fig. 1 to 3 show a drilling fluid level monitoring device provided by the invention, which comprises a counter beam 1 and a ground anchor 2 fixed with the counter beam 1; the reverse beam 1 is provided with a fixed hole 3, a detection mechanism is inserted in the fixed hole 3, the detection mechanism comprises an outer sleeve 4 inserted in the fixed hole 3 in a sliding manner and an inner sleeve 5 inserted in the outer sleeve 4, and the upper end of the inner sleeve 5 is connected with a first electric connecting wire 6; a second electric connecting wire 7 is inserted in the inner sleeve 5, the second electric connecting wire 7 is positioned at the center of the inner sleeve 5, and a loop trigger 8 is connected and arranged at the lower end of the second electric connecting wire 7; a voltmeter 9 is connected between the first electrical connection line 6 and the second electrical connection line 7.
The counter beam 1 is plate-shaped, the upper end of the ground anchor 2 is screw-shaped, and the ground anchor 2 and the counter beam 1 are locked by a locking nut, so that the counter beam 1 and the ground anchor 2 are fixed; when in use, the lower end of the ground anchor 2 is inserted and fixed on the ground, so that the counter beam 1 is fixedly installed. The fixing hole 3 is a round hole, and the outer sleeve 4 can move up and down in the fixing hole 3; the outer sleeve 4 is made of insulating materials, the center line of the inner sleeve 5 and the center line of the outer sleeve 4 are on the same straight line, and the inner sleeve 5 can fully move up and down in the outer sleeve 4. The inner sleeve 5 is made of conductive metal, and the inner sleeve 5 is welded with the first electrical connection wire 6, so that the inner sleeve 5 is in circuit communication with the first electrical connection wire 6.
The second electric connection wire 7 is located at the center of the inner sleeve 5, and the central axis of the second electric connection wire 7 and the central axis of the inner sleeve 5 are on the same straight line, so that the contact between the second electric connection wire and the inner sleeve 5 is effectively prevented from forming circuit connection. The model of the loop trigger 8 is 74HC74, and the loop trigger 8 is electrically connected with the second electrical connection wire 7, so that the loop trigger 8 is in circuit communication with the second electrical connection wire 7; the model of the voltmeter 9 is DF3-D, the first electric connecting wire 6 and the second electric connecting wire 7 are respectively connected with the positive and negative stages of the voltmeter 9, so that the voltmeter 9, the first electric connecting wire 6, the second electric connecting wire 7, the inner sleeve 5 and the liquid level form a loop, the voltmeter 9 is rotated, and whether the liquid in the well is measured or not is measured, so that the liquid level in the well is measured.
An insulating positioning ring 10 is fixedly arranged on the first electric connecting wire 6, and the insulating positioning ring 10 is positioned in the inner sleeve 5; the insulating positioning ring 10 moves up and down in the inner sleeve 5 sufficiently, the insulating positioning ring 10 is made of rubber, and the insulating positioning ring 10 is fixedly adhered to the first electric connecting wire 6, so that the first electric connecting wire 6 is limited, and the first electric connecting wire 6 and the inner sleeve 5 are effectively prevented from forming a passage. The number of the insulating positioning rings 10 is at least one, and the plurality of insulating positioning rings 10 are uniformly distributed at intervals along the length direction of the first electric connecting wire 6, so that the position fixing effect of the first electric connecting wire 6 is better, and the first electric connecting wire 6 and the inner sleeve 5 are prevented from forming a passage. The large diameter of the insulating positioning ring 10 is in clearance fit with the inner diameter of the inner sleeve 5.
The lower end of the outer sleeve 4 is in a reverse conical shape, so that the outer sleeve 4 can be conveniently inserted into a well by directly penetrating through the fixing hole 3, and the outer sleeve 4 is more convenient to install; the lower end of the outer sleeve 4 is provided with the water inlet 11, so that when the slurry enters the outer sleeve 4, the water inlet 11 can perform preliminary filtration on dregs in the slurry, and the dregs in the slurry are prevented from entering the outer sleeve 4 to influence the measurement of the liquid level, so that the measurement of the invention is more accurate.
The outer sleeve 4 is also provided with a sealing sheet, the sealing sheet is divided into a plurality of sector-shaped petals 12, and the edges of the sector-shaped petals 12 are respectively hinged with the inner wall of the outer sleeve 4; a plurality of abutting springs 13 are fixedly arranged on the inner wall of the outer sleeve 4, and the upper ends of the abutting springs 13 are respectively fixed with the fan-shaped petals 12 one by one; the sealing piece is used for sealing the lower end of the outer sleeve 4, so that when the liquid level does not need to be measured, mud can be effectively prevented from entering the outer sleeve 4 through the sealing of the sealing piece; the number of the sector petals 12 is 3, the sizes and the shapes of the three sector petals 12 are equal, and the 3 sector petals 12 are hinged with the inner wall of the outer sleeve 4 through hinges, so that in order to ensure that the sealing effect of the 3 sector petals 12 in a closed state is better, rubber sealing strips can be fixedly adhered or sealed and embedded on the edges of the sector petals 12, and the sealing effect of the 3 sector petals 12 in the closed state is better.
The number of the abutting springs 13 is equal to that of the sector petals 12, the lower ends of the abutting springs 13 are welded and fixed with the inner wall of the outer sleeve 4, and the upper ends of the abutting springs 13 are welded and fixed with the sector petals 12; the abutting springs 13 are located below the sector petals 12, and the elastic force of the abutting springs 13 enables the abutting springs 13 to always push the sector petals 12, so that the sector petals 12 are kept in a closed state under the condition that no external force is applied to the sector petals 12, the lower ends of the outer sleeves 4 are sealed, and mud is effectively prevented from entering the outer sleeves 4.
The outer sleeve 4 is provided with a guide strip 14, and the inner wall of the fixed hole 3 is provided with a guide groove 15 matched with the guide strip 14; the upper end of the inner sleeve 5 is provided with an external thread 16, and the upper end of the outer sleeve 4 is provided with an internal thread 17 matched with the external thread 16. The guide strips 14 are arranged along the length direction of the outer sleeve 4, and the length of the guide strips 14 is the same as the length of the outer sleeve 4; the number and the positions of the guide strips 14 are at least one, the number and the positions of the guide grooves 15 correspond to those of the guide strips 14, and the guide strips 14 are in interactive fit with the guide grooves 15; through the cooperation of the guide strip 14 and the guide groove 15, the outer sleeve 4 can only move up and down along the fixed hole 3, and the outer sleeve 4 can not rotate in the fixed hole 3.
The external thread 16 is located on the outer wall of the inner sleeve 5, the internal thread 17 is located on the inner wall of the outer sleeve 4, and the external thread 16 is meshed with the internal thread 17, so that when the inner sleeve 5 rotates, the inner sleeve 5 gradually moves downwards along with the rotation of the inner sleeve 5, the lower end of the inner sleeve 5 applies a thrust to the sector valve 12 along with the movement of the inner sleeve 5, the abutting spring 13 is compressed, the sector valve 12 is rotated, the lower end of the outer sleeve 4 is opened, mud entering the lower end of the outer sleeve 4 can smoothly enter the upper end of the outer sleeve 4, and accordingly liquid level measurement is achieved.
The upper end of the inner sleeve 5 is also provided with a limit edge table 18, the inner sleeve 5 and the limit edge table 18 are integrally arranged, and the limit edge table 18 is arranged at the upper end of the inner sleeve 5 to prevent the inner sleeve 5 from moving down too much distance when the inner sleeve 5 rotates; meanwhile, when the inner sleeve 5 needs to be rotated, people can rapidly hold the upper end of the inner sleeve 5 to rotate, so that the inner sleeve 5 rotates more conveniently.
Scale marks are marked on the second electric connecting wire 7, so that the length of the downward movement of the second electric connecting wire 7 can be rapidly read when the second electric connecting wire 7 moves downward, and the distance between the liquid level and the ground can be rapidly obtained. The inner sleeve 5 and the outer sleeve 4 are radially arranged at intervals, so that the inner sleeve 5 moves in the outer sleeve 4 more smoothly.
The liquid level measuring device is characterized in that a plurality of fixing holes 3 are formed, and detection mechanisms are inserted into the plurality of fixing holes 3, so that the plurality of detection mechanisms can measure the liquid level at the same time, and measured data are more accurate. The number of the ground anchors 2 is at least two, and the plurality of ground anchors 2 are symmetrically distributed along the center of the mounting plate, so that the supporting force born by the mounting plate is more balanced, and finally the mounting of the mounting plate is more stable.
When the liquid level in the well is required to be measured, the ground anchor 2 is inserted and fixed on the ground, the counter beam 1 is leveled with the ground, then the counter beam 1 is fixed, and the measuring mechanism is inserted into the well through the fixing hole 3. If the liquid level in the well needs to be measured, the inner sleeve 5 is rotated, the inner sleeve 5 gradually moves downwards during rotation through the cooperation of the internal thread 17 and the external thread 16, and as the inner sleeve 5 continues to rotate, the lower end of the inner sleeve 5 pushes the arc-shaped valve to rotate when the lower end of the inner sleeve 5 continues to move downwards, so that the lower end of the outer sleeve 4 is opened, and at the moment, the liquid level entering the lower end of the outer sleeve 4 through the water inlet 11 enters the upper end of the outer sleeve 4 and enters the inner sleeve 5; when the mud enters the inner sleeve 5, the mud contacts with a loop trigger 8 at the lower end of a second electric connecting wire 7, and at the moment, the first electric connecting wire 6, the inner sleeve 5, the mud, the loop trigger 8, the second electric connecting wire 7 and the voltmeter 9 form a loop, so that a pointer of the voltmeter 9 starts to rotate, and the height of the liquid level in the well is measured.
In the measuring process, if the loop trigger 8 fixed at the upper end of the second electric connection wire 7 is not contacted with slurry, the loop trigger 8 cannot work, at the moment, the second electric connection wire 7 is disconnected from the inner sleeve 5, the first electric connection wire 6 is not communicated with the second electric connection wire 7, and the pointer of the voltmeter 9 is stopped, so that the liquid level is detected.
When the measuring mechanism is inserted into the well and the liquid level is not required to be measured, the lower end of the inner sleeve 5 is far away from the arc-shaped valve, and the arc-shaped valve is abutted tightly by the abutting spring 13 fixed on the inner wall of the outer sleeve 4, so that a plurality of arc-shaped valves are closed, the lower end of the outer sleeve 4 is closed, and mud entering the lower end of the outer sleeve 4 cannot continuously enter the upper end of the outer sleeve 4.
The invention can effectively detect the liquid level in the well, has the advantages of accurate measurement, simple structure, low cost and convenient use, and can be used for monitoring the liquid level or other fields needing to seal the well bore.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The drilling fluid level monitoring device is characterized by comprising a counter beam and a ground anchor fixed with the counter beam; the detection mechanism comprises an outer sleeve and an inner sleeve, wherein the outer sleeve is inserted into the fixed hole in a sliding manner, the inner sleeve is inserted into the outer sleeve, the inner sleeve is made of conductive metal, and the upper end of the inner sleeve is connected with a first electric connecting wire; a second electric connecting wire is inserted into the inner sleeve, the second electric connecting wire is positioned in the center of the inner sleeve, and the lower end of the second electric connecting wire is connected with a loop trigger; a voltmeter is connected between the first electric connecting wire and the second electric connecting wire; the outer sleeve is also provided with a sealing sheet, the sealing sheet is divided into a plurality of sector-shaped petals, and the edges of the sector-shaped petals are respectively hinged with the inner wall of the outer sleeve; the inner wall of the outer sleeve is fixedly provided with a plurality of abutting springs, and the upper ends of the abutting springs are respectively fixed with the sector petals one by one.
2. The drilling fluid level monitoring apparatus of claim 1, wherein an insulating positioning ring is fixedly mounted on the first electrical connection wire, and the insulating positioning ring is positioned in the inner sleeve.
3. The drilling fluid level monitoring apparatus of claim 2, wherein the major diameter of the insulating spacer ring is in clearance fit with the inner diameter of the inner casing.
4. The drilling fluid level monitoring device of claim 1, wherein the lower end of the outer sleeve is in an inverted conical shape, and the lower end of the outer sleeve is provided with a water inlet.
5. The drilling fluid level monitoring device according to claim 1, wherein the outer sleeve is provided with a guide bar, and the inner wall of the fixing hole is provided with a guide groove matched with the guide bar; the upper end of the inner sleeve is provided with external threads, and the upper end of the outer sleeve is provided with internal threads matched with the external threads.
6. The drilling fluid level monitoring apparatus of claim 1, wherein the upper end of the inner sleeve is further provided with a stop rim.
7. The drilling fluid level monitoring apparatus of claim 1, wherein the second electrical connection is marked with graduation marks.
8. The drilling fluid level monitoring apparatus of claim 1, wherein the plurality of fixing holes are provided with a detection mechanism inserted therein.
9. The drilling fluid level monitoring apparatus of claim 1, wherein the number of ground anchors is at least two and the plurality of ground anchors are symmetrically arranged along a center of the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635916.9A CN109577953B (en) | 2018-12-29 | 2018-12-29 | Drilling fluid liquid level monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635916.9A CN109577953B (en) | 2018-12-29 | 2018-12-29 | Drilling fluid liquid level monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109577953A CN109577953A (en) | 2019-04-05 |
| CN109577953B true CN109577953B (en) | 2023-12-22 |
Family
ID=65933539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811635916.9A Active CN109577953B (en) | 2018-12-29 | 2018-12-29 | Drilling fluid liquid level monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109577953B (en) |
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| CN109577953A (en) | 2019-04-05 |
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