CN210442080U - Water stopping device for rubber ball plug for offshore water pressure test - Google Patents
Water stopping device for rubber ball plug for offshore water pressure test Download PDFInfo
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- CN210442080U CN210442080U CN201921442561.1U CN201921442561U CN210442080U CN 210442080 U CN210442080 U CN 210442080U CN 201921442561 U CN201921442561 U CN 201921442561U CN 210442080 U CN210442080 U CN 210442080U
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Abstract
The utility model discloses a rubber ball plug water stopping device for offshore water pressure test, belonging to the field of water pressure test and aiming at providing a device for offshore water pressure test by using a rubber ball type plug as a water stopping device, which has the key points of the technical proposal that the device comprises two rubber plugs, a plurality of rubber ball plugs and a drill rod which are arranged in a drill rod sleeve, wherein the drill rod is a through pipe, one end of the drill rod is connected with a water inlet, and the other end of the drill rod is connected with a water outlet; the rubber ball plugs and the rubber plugs are sleeved on one side of the drill rod below the seabed surface, and the rubber plugs are fixed on two sides of the rubber ball plugs; a fixed rod is arranged at one end, far away from the rubber ball plug, of the rubber plug close to one side of the sea bottom surface; and a movable rod is arranged at one end of the rubber plug far away from the rubber ball plug and on the side far away from the sea bottom surface.
Description
Technical Field
The utility model relates to a water pressure test technical field, more specifically say, it relates to a marine water pressure test rubber ball stopper stagnant water device.
Background
The pressurized water test work comprises the steps of hole washing, plug isolation test section setting, water level measurement, instrument installation, pressure and flow observation and the like. The setting of the embolism isolation test section is the most important link in the pressurized water test. The reliability of the plug water stop determines the quality of the water pressing test.
The offshore water pressure test mainly uses a drill rod, a drill rod sleeve and a plug as devices of the main water pressure test. The types of the current embolism comprise a rubber ball type, a pneumatic type and a hydraulic type. The rubber ball type plug is low in price, the water pressing equipment is simple to produce and manufacture, the rubber ball is only required to be pressurized by a drilling machine and the like on site to expand and stop water, and the rubber ball type plug is convenient to use, so that the rubber ball type plug is widely used.
However, for the offshore water pressure test, most platforms are built on ships and are affected by seawater tides, water level fluctuation and water level fluctuation caused by passing of nearby traffic ships, so that the platforms fluctuate up and down, a drilling machine depending on the platforms fluctuates up and down, and the force of expansion of the rubber ball due to the self weight of the drilling machine is greatly fluctuated, so that water stop failure is caused. Therefore, in order to use the rubber ball type plug also in the sea for the water pressure test, design improvement is needed.
SUMMERY OF THE UTILITY MODEL
To the deficiency that prior art exists, the utility model aims to provide a carry out the device that the pressurized-water test was carried out on sea with glueballs formula embolism as watertight fittings.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a rubber ball plug water stop device for an offshore water pressure test comprises two rubber plugs arranged in a drill rod sleeve, a plurality of rubber ball plugs and a drill rod, wherein the drill rod is a through pipe, one end of the drill rod is connected with a water inlet, and the other end of the drill rod is connected with a water outlet; the rubber ball plugs and the rubber plugs are sleeved on one side of the drill rod below the seabed surface, and the rubber plugs are fixed on two sides of the rubber ball plugs; a fixed rod is arranged at one end, far away from the rubber ball plug, of the rubber plug close to one side of the sea bottom surface; and a movable rod is arranged at one end of the rubber plug far away from the rubber ball plug and on the side far away from the sea bottom surface.
By adopting the technical scheme, the two ends are cylindrical rubber plugs, and the middle is a spherical rubber ball plug. The number of the rubber ball plugs can be correspondingly increased or decreased according to the actual stratum condition. The drill rod can be replaced by a water inlet pipe, and the rubber plug and the rubber ball plug are extruded by the relative movement of the drill rod (or the water inlet pipe) to the water outlet pipe of the water pressing section, so that the drill rod is expanded to achieve the water stopping effect. When the rubber plug is extruded, the fixed rod is fixed, the movable rod moves upwards to extrude the rubber plug and the rubber ball plug to the fixed rod.
Further, the inner wall of the drill pipe sleeve is contacted with the circumferential wall of the rubber plug.
By adopting the technical scheme, the drill pipe casing with a certain depth is arranged for the protection and the orientation of the drill pipe drilling. The inner wall of the drill rod sleeve is contacted with the peripheral wall of the rubber plug and is tightly matched, so that the rubber plugs at two ends can be conveniently fixed.
Further, a drill rod sleeve clamping plate is arranged on one side, close to the sea surface, of the drill rod sleeve, and a drill rod clamping plate is arranged on one side, close to the water inlet, of the drill rod sleeve; and the two ends of the drill rod sleeve clamping plate and the drill rod clamping plate are both provided with a connecting hole, and the connecting holes are connected with the steel wire rope.
Through adopting above-mentioned technical scheme, set up drilling rod sleeve pipe splint and drilling rod splint, have the certain distance between two splint, connect wire rope through the connecting hole, conveniently hang the lifting hook.
Furthermore, a chain block is arranged between the drill rod casing clamping plate and the drill rod clamping plate; the chain block further comprises a first lifting hook and a second lifting hook, the first lifting hook is connected with the steel wire rope on one side of the drill rod clamping plate, and the second lifting hook is connected with the steel wire rope on one side of the drill rod sleeve clamping plate through a tension meter.
Through adopting above-mentioned technical scheme, be connected with the wire rope of drilling rod splint one side through the first lifting hook on the chain block, the second lifting hook passes through the tensiometer and is connected with the wire rope of drilling rod sleeve splint one side. Pulling the chain block iron chain, and applying downward pressure to the drill rod reversely by using the frictional resistance of the sleeve so as to extrude and expand the rubber ball type plug to achieve the water stopping effect. Before pressurization, the tension is displayed by observing the tension meter.
Furthermore, an automatic recording display instrument is further arranged at one end of the water inlet and is connected with the pressure sensor through a cable.
By adopting the technical scheme, the pressure change condition in the drill pipe sleeve monitored is automatically recorded and displayed. The water level change conditions in the drill rod casing pipe before water pressing and in different pressure stages can be judged by observing the pressure change curve conditions, an alarm threshold value is set, the alarm can be given when the pressure change conditions in the drill rod casing pipe exceed the alarm threshold value, and the water stop failure is displayed. Otherwise, the water stopping is successful.
Further, the pressure sensor is positioned on the upper surface of the rubber plug on one side close to the fixed rod.
By adopting the technical scheme, before the equipment is in place to prepare pressurized water, the high-precision pressure sensor is placed above the rubber ball type plug in the drill pipe sleeve, and the pressure condition in the pipe hole of the drill pipe sleeve is observed and recorded and is automatically recorded as the background pressure value. After the water is pressurized, the pressure change condition in the drill pipe sleeve can be continuously and automatically monitored and recorded.
Further, the inner wall of the drill rod sleeve is further provided with a section of protective pipe, the lower end of the protective pipe is close to the fixed rod, and the upper end of the protective pipe is close to the water inlet.
By adopting the technical scheme, the protective pipe on the inner wall of the drill rod sleeve can protect the drill rod sleeve from the fixing rod to the water inlet section.
Furthermore, the lowest end of the drill rod sleeve is a water outlet pipe of a water pressing section.
By adopting the technical scheme, the lowest end of the drill pipe sleeve is the water pressing section water outlet pipe, and a drill pipe with a certain length can be configured at the bottommost part according to the length of the bedrock test section.
To sum up, the utility model discloses following beneficial effect has:
1. the arrangement of the chain block can play a role in reversely applying downward pressure to the drill rod (water inlet pipe) by utilizing the frictional resistance of the drill rod sleeve so as to ensure that the rubber ball type plug extrudes and expands to achieve the water stopping effect;
2. through the arrangement of the automatic recording display screen and the pressure sensor, the effect of judging the water stopping effect of the rubber ball type embolism can be achieved by observing the pressure change condition monitored by the pressure sensor before and after water injection through the automatic recording display screen;
3. through the arrangement of the drill rod sleeve, the effects of drill rod drilling protection and orientation can be achieved.
Drawings
FIG. 1 is a schematic view of the connection relationship between the rubber ball type plug and the chain block in the embodiment.
In the figure, 1, a rubber plug; 2. a rubber ball plug; 3. a drill stem; 4. a water inlet; 5. a water outlet; 6. sea floor surface; 7. fixing the rod; 8. a movable rod; 9. a drill pipe sleeve; 10. sea surface; 11. a drill pipe sleeve clamping plate; 12. a drill rod clamping plate; 13. connecting holes; 14. a wire rope; 15. a chain block; 16. a first hook; 17. a second hook; 18. a tension meter; 19. an automatic recording display instrument; 20. a cable; 21. a pressure sensor; 22. protecting the pipe; 23. and a water outlet pipe of the water pressing section.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): the utility model provides a marine pressurized-water test rubber ball stopper water stop device, is including setting up two rubber stoppers 1, a plurality of rubber ball stopper 2 and drilling rod 3 in drilling rod sleeve 9, and drilling rod 3 is siphunculus and one end connection water inlet 4, and delivery port 5 is connected to one end. A plurality of rubber ball plugs 2 and rubber plugs 1 are sleeved on one side of the drill rod 3 below the seabed surface 6, and the rubber plugs 1 are fixed on two sides of the rubber ball plugs 2. Preferably, the two ends are cylindrical rubber plugs 1, and the middle is a spherical rubber ball plug 2. The number of the rubber ball plugs 2 can be correspondingly increased or decreased according to the actual stratum conditions. The inner wall of the drill pipe sleeve 9 is contacted with the peripheral wall of the rubber plug 1, so that the sealing effect of the rubber ball type plug is ensured. The lowest end of the drill pipe sleeve 9 is a water outlet pipe 23 of a water pressing section, and a drill pipe 3 with a certain length can be configured at the lowest part according to the length of the bedrock test section.
A fixed rod 7 is arranged at one end of the rubber plug 1 close to the sea bottom surface 6 and far away from the rubber ball plug 2; and a movable rod 8 is arranged at one end of the rubber plug 1 far away from the seabed surface 6 and the rubber ball plug 2. When the rubber plug is extruded, the fixed rod is fixed, the movable rod moves upwards to extrude the rubber plug and the rubber ball plug to the fixed rod. The inner wall of the drill pipe sleeve 9 is also provided with a section of protective pipe 22, the lower end of the protective pipe 22 is close to the fixed rod 7, the upper end of the protective pipe 22 is close to the water inlet 4, and the protective pipe can protect the drill pipe sleeve from the fixed rod to the water inlet.
A drill rod sleeve clamp plate 11 is arranged on one side of the drill rod sleeve 9 close to the sea surface 10, and a drill rod clamp plate 12 is arranged on one side of the drill rod 3 close to the water inlet 4; both ends of the drill pipe sleeve clamping plate 11 and the drill pipe clamping plate 12 are provided with a connecting hole 13, and the connecting hole 13 is connected with a steel wire rope 14. A chain block 15 is arranged between the drill pipe casing clamping plate 11 and the drill pipe clamping plate 12, the chain block 15 further comprises a first lifting hook 16 and a second lifting hook 17, the first lifting hook 16 is connected with a steel wire rope 14 on one side of the drill pipe clamping plate 12, and the second lifting hook 17 is connected with the steel wire rope 14 on one side of the drill pipe casing clamping plate 11 through a tension meter 18. Before pressurization, the frictional resistance of the sleeve needs to be calculated. By observing the tension meter 18, the tension magnitude must not exceed the frictional resistance and the ultimate tension magnitude of the chain block 15.
In order to detect the water stopping effect, an automatic recording display instrument 19 is further arranged at one end of the water inlet 4, the pressure sensor 21 is located on the upper surface of the rubber plug 1 close to one side of the fixing rod 7, and the automatic recording display instrument 19 is connected with the pressure sensor 21 through a cable 20. The water stopping effect of the rubber ball type plug is judged by observing the pressure change condition monitored by the pressure sensor 21 before and after water injection.
The specific implementation process comprises the following steps: when the offshore water pressure test device of the embodiment is used, a rubber ball type plug is adopted. A plurality of spherical rubber ball plugs 2 are arranged at the lower section of the drill rod 3 according to the actual stratum conditions, and two sides of each rubber ball plug 2 are tightly plugged by a cylindrical rubber plug 1 and a drill rod sleeve 9. When in use, the rubber ball type plug is positioned below the sea bottom surface 6. The drill rod 3 may also be replaced by a water inlet pipe. And then a movable rod 8 is arranged on the drill rod 3 below the lower end rubber plug 1, and a fixed rod 7 is arranged at the upper end of the upper end rubber plug 1. Then, the positions of the drill pipe sleeve clamping plate 11 and the drill pipe clamping plate 12 are set according to the actual stratum condition, and the chain block 15 is connected through a steel wire rope 14. When the clamp plate is installed, the drill pipe sleeve clamp plate 11 is located above the sea surface 10 when the clamp plate is used.
Finally, water is injected into the drill rod 3 through the water inlet 4. Before pressurization, the magnitude of the frictional resistance is calculated, then the magnitude of the tensile force of the tension meter 18 is observed, and the tensile force is ensured not to exceed the magnitude of the frictional resistance and the magnitude of the ultimate tensile force of the chain block 15. And then an iron chain of the chain block 15 is pulled to reversely apply downward pressure to the drill rod 3, the drill rod 3 moves relatively to the water outlet pipe 23 of the water pressing section, the movable rod 8 moves to the end of the fixed rod 7, and the counter force provided by the friction resistance of the drill rod sleeve is used as the pressurizing expansion force of the rubber ball type plug, so that the rubber ball type plug is extruded and expanded to achieve the water stopping effect.
In order to better detect the water stopping effect, before the equipment is in place to prepare for water pressing, the high-precision pressure sensor 21 is placed above the rubber ball type plug in the hole of the drill pipe sleeve 9, the pressure condition in the hole of the drill pipe sleeve 9 is observed and recorded, and the pressure condition is automatically recorded through the automatic recording display screen and serves as a background pressure value. Then water is injected to observe the water stopping effect. The water level change condition in the hole of the drill rod sleeve 9 before water pressing and in different pressure stages can be judged by observing the pressure change curve condition, an alarm threshold value is set, and the alarm is given when the pressure change condition in the hole of the drill rod sleeve 9 exceeds the alarm threshold value, so that the water stop failure is displayed. Otherwise, the water stopping is proved to be successful.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. A rubber ball plug water stopping device for an offshore water pressure test comprises two rubber plugs (1) arranged in a drill pipe sleeve (9), a plurality of rubber ball plugs (2) and a drill pipe (3), wherein the drill pipe (3) is a through pipe, one end of the drill pipe is connected with a water inlet (4), and the other end of the drill pipe is connected with a water outlet (5); the method is characterized in that: the rubber ball plugs (2) and the rubber plugs (1) are sleeved on one side of the drill rod (3) below the seabed surface (6), and the rubber plugs (1) are fixed on two sides of the rubber ball plugs (2); a fixed rod (7) is arranged at one end of the rubber plug (1) close to one side of the sea bottom surface (6) and far away from the rubber ball plug (2); and a movable rod (8) is arranged at one end, far away from the rubber plug (2), of the rubber plug (1) at one side of the seabed surface (6).
2. The offshore water pressure test rubber ball stopper water stopping device of claim 1, which is characterized in that: the inner wall of the drill rod sleeve (9) is contacted with the peripheral wall of the rubber plug (1).
3. The offshore water pressure test rubber ball stopper water stopping device of claim 2, which is characterized in that: a drill rod sleeve clamp plate (11) is arranged on one side, close to the sea surface (10), of the drill rod sleeve (9), and a drill rod clamp plate (12) is arranged on one side, close to the water inlet (4), of the drill rod (3); the drill rod sleeve clamping plate (11) and the drill rod clamping plate (12) are both provided with a connecting hole (13), and the connecting hole (13) is connected with a steel wire rope (14).
4. The offshore water pressure test rubber ball stopper water stopping device of claim 3, which is characterized in that: a chain block (15) is arranged between the drill rod sleeve clamping plate (11) and the drill rod clamping plate (12); chain block (15) still include first lifting hook (16) and second lifting hook (17), first lifting hook (16) with wire rope (14) of drilling rod splint (12) one side are connected, second lifting hook (17) through tensiometer (18) with wire rope (14) of drilling rod casing splint (11) one side are connected.
5. The offshore water pressure test rubber ball stopper water stopping device of claim 1, which is characterized in that: and an automatic recording display instrument (19) is further arranged at one end of the water inlet (4), and the automatic recording display instrument (19) is connected with the pressure sensor (21) through a cable (20).
6. The offshore water pressure test rubber ball stopper water stopping device of claim 5, which is characterized in that: the pressure sensor (21) is positioned on the upper surface of the rubber plug (1) close to one side of the fixed rod (7).
7. The offshore water pressure test rubber ball stopper water stopping device according to any one of claims 2 or 3, characterized in that: the inner wall of the drill rod sleeve (9) is further provided with a section of protective pipe (22), the lower end of the protective pipe (22) is close to the fixed rod (7), and the upper end of the protective pipe (22) is close to the water inlet (4).
8. The offshore water pressure test rubber ball plug water stopping device as claimed in any one of claims 2 to 3, wherein: the lowest end of the drill rod sleeve (9) is provided with a water outlet pipe (23) of a water pressing section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921442561.1U CN210442080U (en) | 2019-08-30 | 2019-08-30 | Water stopping device for rubber ball plug for offshore water pressure test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921442561.1U CN210442080U (en) | 2019-08-30 | 2019-08-30 | Water stopping device for rubber ball plug for offshore water pressure test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210442080U true CN210442080U (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921442561.1U Active CN210442080U (en) | 2019-08-30 | 2019-08-30 | Water stopping device for rubber ball plug for offshore water pressure test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210442080U (en) |
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2019
- 2019-08-30 CN CN201921442561.1U patent/CN210442080U/en active Active
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