CN215866292U - Sealing device for water pressure test of drilling hole - Google Patents
Sealing device for water pressure test of drilling hole Download PDFInfo
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- CN215866292U CN215866292U CN202121828800.4U CN202121828800U CN215866292U CN 215866292 U CN215866292 U CN 215866292U CN 202121828800 U CN202121828800 U CN 202121828800U CN 215866292 U CN215866292 U CN 215866292U
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Abstract
The utility model discloses a drilling water-pressure test sealing device which comprises a sleeve, wherein a water-pressure interface and a pressure gauge are arranged on the side wall of the sleeve, a lower sealing disc is arranged on the outer wall of the upper end of the sleeve, a sealing joint is arranged above the sleeve, an upper sealing disc is arranged on the outer wall of the sealing joint, and a groove matched with the lower sealing disc is arranged on the lower end surface of the upper sealing disc; a sealing groove is arranged between the opposite surfaces of the lower sealing disc and the upper sealing disc, and a sealing ring is arranged in the sealing groove; the outer wall is installed with the sealed locking of a plurality of spacing card after lower sealed dish and the laminating of last sealed dish, and the spacing card of a plurality of is established ties through the band and is become cyclic annular. The upper sealing disc integrally covers the periphery of the lower sealing disc, and the sealing ring is arranged between the opposite surfaces of the upper sealing disc and the lower sealing disc, so that the sealing effect is obviously improved, and the data accuracy of a pressurized water test is facilitated; when the device is used, the drilling tools in the drill holes do not need to be lifted out, and the drilling tools only need to be lifted into the casing, so that the single water pressing test period is shortened, the labor intensity of workers is reduced, and the working efficiency is improved. The test cost is reduced.
Description
The technical field is as follows:
the utility model relates to the field of drilling, in particular to a sealing device for a water pressure test of a drill hole.
Background art:
the water pressure test is an important means for detecting stratum permeability, and is a test for calculating the relative water permeability of rock mass and knowing the development degree of cracks according to the relation between the amount of water pressed in within a certain time and the magnitude of applied pressure.
The structural design of the existing water pressing device has defects, the diameter of the water pressing device is the same as that of a technical sleeve 1, the lower part of the water pressing device is connected with the technical sleeve 1 through a male buckle, the upper part of the water pressing device is welded by a steel plate, the steel plate is provided with a small opening, and an anti-seismic pressure gauge 2 is installed. The side surface of the water pressing device is provided with a water pressing port 3, a male buckle is welded and connected with a female buckle of a high-pressure water hose, and the other side of the high-pressure water hose is connected with a high-pressure grouting pump.
Before the existing water pressing device is used, a drilling tool needs to be completely lifted out of a well bottom, and a screw thread protective sleeve of a technical casing opening is dismounted. After the pressurized water test is finished, the drilling tool is put down to the bottom of the well and drilling is continued, and the pressurized water device has the following defects:
1. the water pressing device is generally manufactured on site by utilizing the residual sleeve, and the process is rough;
2. the screw thread at the bottom of the water pressing device is a conventional long round thread, a worker manually fastens the long round thread, the sealing is poor, and the screw thread is frequently disassembled and assembled, so that the puncture is likely to occur, the accuracy of a test result is influenced, and the safety is also poor;
3. before use, the drilling tool is required to be completely lifted out of the well bottom, the screw thread protective sleeve at the casing opening is dismounted, and after the water pressing test is finished, the drilling tool is lowered to the well bottom to continue drilling, so that the time for lifting and lowering the drilling tool is long, and the labor intensity of workers is high.
Aiming at the defects, a whole-well tripping is not needed to be designed, the sealing performance of the whole device is improved, and the convenient pressurized-water test device is assembled to meet the requirements of practical application.
The utility model has the following contents:
in order to solve the problems in the prior art, the utility model aims to provide a sealing device for a water-pressurizing test of a drill hole, which does not need to trip the drill hole in a whole well when performing the water-pressurizing test of the drill hole, reduces the single water-pressurizing test period, lightens the labor intensity of workers and improves the working efficiency; on the other hand, the sealing performance is effectively improved, the accuracy of the test result is ensured, and the convenience and the safety of the installation of the whole sealing device are improved.
The technical scheme of the utility model is as follows:
a drilling pressurized-water test sealing device comprises a sleeve, wherein a pressurized-water interface and a pressure gauge are arranged on the side wall of the sleeve, and the drilling pressurized-water test sealing device is characterized in that a lower sealing disc is arranged on the outer wall of the upper end of the sleeve, a sealing joint is arranged above the sleeve, an upper sealing disc is arranged on the outer wall of the sealing joint, and a groove matched with the lower sealing disc is formed in the lower end face of the upper sealing disc;
a sealing groove is arranged between the opposite surfaces of the lower sealing disc and the upper sealing disc, and a sealing ring is arranged in the sealing groove;
the outer wall is installed with the sealed locking of a plurality of spacing card after lower sealed dish and the laminating of last sealed dish, the spacing card of a plurality of establishes ties through the band and becomes cyclic annular.
The drilling water-pressure test sealing device is characterized in that the upper end of the sealing joint is a female joint connected with a drill rod at the driving end, and the lower end of the sealing joint is a male joint connected with the drill rod in a drilling hole.
The sealing device for the borehole water pressure test is characterized in that the lower end of the sealing joint is of a closed tubular structure, the female joint is an internal thread section with the inner wall of the open end in conical distribution, and the male joint is an external thread section with the closed end in conical distribution.
The sealing device for the drilling water pressure test is characterized in that the limiting clamp comprises a clamp body, an upper clamping jaw and a lower clamping jaw are arranged at the front end of the clamp body, and a strap perforation is arranged at the tail of the clamp body.
Drilling pressurized-water test sealing device, its characterized in that, spacing card quantity be no less than three, evenly distributed during the installation in sealed dish down, the annular outer wall of sealed dish on, the last jack catch of every spacing card, lower jack catch closely laminate with sealed dish up end, the sealed end surface under the sealed dish down respectively.
The sealing device for the drilling water-pressing test is characterized in that the outer diameter of the lower sealing disc is slightly smaller than the inner diameter of the groove of the upper sealing disc, and the depth of the groove of the upper sealing disc is slightly larger than the thickness of the lower sealing disc.
Compared with the prior art, the utility model has the advantages that:
1. the utility model has simple structure design, compact and reliable structure, convenient manufacture and low manufacturing cost;
2. the lower end of the sealing joint is provided with a male joint matched with a drill rod in a drill hole and a female joint connected with the drill rod at the driving end, and the conical design is convenient for installation and butt joint during a water pressing test;
3. the upper sealing disc integrally covers the periphery of the lower sealing disc, and the sealing ring is arranged between the opposite surfaces of the upper sealing disc and the lower sealing disc, so that the sealing effect is obviously improved, and the data accuracy of a pressurized water test is facilitated;
5. when the utility model is used, the drilling tool in the drill hole does not need to be lifted out, and the drilling tool only needs to be lifted into the sleeve, thereby reducing the single water pressing test period, lightening the labor intensity of workers and improving the working efficiency. The test cost is reduced;
6. the upper sealing disc is wrapped on the periphery of the lower sealing disc and is fixed by the plurality of limiting cards which are connected in series to form a ring shape, and the limiting cards are distributed along the circumferential direction and are radially fixed, so that the fixing efficiency is improved, and the sealing performance of the fixed water pressing device is facilitated.
Description of the drawings:
fig. 1 is a schematic view of a conventional water pressurizing apparatus according to the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is a working state diagram of the present invention.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
A drilling pressurized-water test sealing device comprises a sleeve 1, a pressurized-water interface 3 and a pressure gauge 2 are arranged on the side wall of the sleeve 1, a lower sealing disc 4 is arranged on the outer wall of the upper end of the sleeve 1, a sealing joint 5 is arranged above the sleeve 1, an upper sealing disc 6 is arranged on the outer wall of the sealing joint 5, and a groove 7 matched with the lower sealing disc is arranged on the lower end face of the upper sealing disc 6;
a sealing groove 8 is arranged between the opposite surfaces of the lower sealing disc 4 and the upper sealing disc 6, and a sealing ring 9 is arranged in the sealing groove 8;
the outer wall is installed with the sealed locking of the spacing card 10 of a plurality of behind the sealed dish 4 of lower part and the 6 laminating of last sealed dish, and the spacing card of a plurality of establishes ties through band 11 and becomes cyclic annular, wholly in an organic whole, the phenomenon of dropping can not appear.
The upper end of the sealing joint 5 is connected with a female joint 5-1 of the driving end drill rod, and the lower end is connected with a male joint 5-2 of the drill rod 12 in the drill hole.
The lower end of the sealing joint 5 is of a closed tubular structure, the female joint 5-1 is an internal thread section with the inner wall of the opening end in conical distribution, the male joint 5-2 is an external thread section with the closed end in conical distribution, and the conical design is beneficial to butt joint positioning.
The limiting clamp 10 comprises a clamp body 10-1, an upper clamping jaw 10-2 and a lower clamping jaw 10-3 are arranged at the front end of the clamp body, and a strap through hole 10-4 is arranged at the tail of the clamp body 10-1.
The number of the limiting cards 10 is not less than three, the limiting cards are evenly distributed on the annular outer walls of the lower sealing disc 4 and the upper sealing disc 6 during installation, and an upper clamping jaw 10-2 and a lower clamping jaw 10-3 of each limiting card are tightly attached to the upper end face of the upper sealing disc 6 and the lower end face of the lower sealing disc 4 respectively.
The outer diameter of the lower sealing disk 4 is slightly smaller than the inner diameter of the groove 8 of the upper sealing disk 6, the depth of the groove 8 of the upper sealing disk is slightly larger than the thickness of the lower sealing disk 4, and after the sealing ring 9 is installed between the lower sealing disk 4 and the upper sealing disk 6 actually, the limiting clamp 10 is locked, and the lower end face of the lower sealing disk 4 is parallel and level to the lower end face of the upper sealing disk 6.
The specific using process is described in detail as follows:
1. after the second-opening cementing is finished, the lower part of the casing 1 is arranged at the top of a second-opening technical casing 13, and the second-opening technical casing are screwed through an external connecting casing 14;
2. before a water pressure test is carried out, a drilling tool is lifted into a technical casing: the lower part of the sealing joint 5 is connected with a drill rod in a drill hole, and the upper part of the sealing joint 5 is connected with a kelly bar (a driving drill rod);
3. the sealing joint is conveyed to the lower sealing disc 4 from the drill floor, at the moment, the drill lifting system still pulls the sealing joint and the lower drill rod string (drill rods in the drill hole), the water pressing interface 3 on the casing pipe is connected with a grouting pipeline, and the grouting pump is started to be in a low position, so that the casing pipe 1 is filled with clean water.
4. Utilize the outer wall to install the sealed locking of a plurality of spacing card 10 after sealed 4 and the 6 laminating of last sealed dish of sealing down, open the grouting pump after sealed and do the pressurized-water test.
5. After the test is finished, the grouting pump releases the pressure, the water pressing pipe is removed, the limiting clamp 10 is removed, the sealing joint 5 is lifted to be above a drill floor, the sealing joint 5 is removed, a lower drill rod string (a drill rod in a drill hole) is connected, the drill is driven down, and the drilling is continued.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A drilling pressurized-water test sealing device comprises a sleeve, wherein a pressurized-water interface and a pressure gauge are arranged on the side wall of the sleeve, and the drilling pressurized-water test sealing device is characterized in that a lower sealing disc is arranged on the outer wall of the upper end of the sleeve, a sealing joint is arranged above the sleeve, an upper sealing disc is arranged on the outer wall of the sealing joint, and a groove matched with the lower sealing disc is formed in the lower end face of the upper sealing disc;
a sealing groove is arranged between the opposite surfaces of the lower sealing disc and the upper sealing disc, and a sealing ring is arranged in the sealing groove;
the outer wall is installed with the sealed locking of a plurality of spacing card after lower sealed dish and the laminating of last sealed dish, the spacing card of a plurality of establishes ties through the band and becomes cyclic annular.
2. The drilling water pressure test sealing device according to claim 1, wherein the upper end of the sealing joint is a female joint connected with the drill rod at the driving end, and the lower end of the sealing joint is a male joint connected with the drill rod in the drilling hole.
3. The sealing device for the borehole water pressure test is characterized in that the lower end of the sealing joint is of a closed tubular structure, the female joint is an internal thread section with the inner wall of the open end distributed in a conical shape, and the male joint is an external thread section with the closed end distributed in a conical shape.
4. The sealing device for the borehole water pressure test is characterized in that the limiting clamp comprises a clamp body, an upper clamping jaw and a lower clamping jaw are arranged at the front end of the clamp body, and a strap through hole is formed in the tail of the clamp body.
5. The drilling water pressure test sealing device according to claim 4, wherein the number of the limiting clamps is not less than three, the limiting clamps are uniformly distributed on the annular outer walls of the lower sealing disc and the upper sealing disc during installation, and the upper clamping jaw and the lower clamping jaw of each limiting clamp are tightly attached to the upper end face of the upper sealing disc and the lower end face of the lower sealing disc respectively.
6. The sealing device for the drilling water pressure test is characterized in that the outer diameter of the lower sealing disc is slightly smaller than the inner diameter of the groove of the upper sealing disc, and the depth of the groove of the upper sealing disc is slightly larger than the thickness of the lower sealing disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121828800.4U CN215866292U (en) | 2021-08-06 | 2021-08-06 | Sealing device for water pressure test of drilling hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121828800.4U CN215866292U (en) | 2021-08-06 | 2021-08-06 | Sealing device for water pressure test of drilling hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215866292U true CN215866292U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121828800.4U Active CN215866292U (en) | 2021-08-06 | 2021-08-06 | Sealing device for water pressure test of drilling hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215866292U (en) |
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2021
- 2021-08-06 CN CN202121828800.4U patent/CN215866292U/en active Active
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