CN214464102U - Underground fixing device of drilling layering test sensor - Google Patents
Underground fixing device of drilling layering test sensor Download PDFInfo
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- CN214464102U CN214464102U CN202023291583.8U CN202023291583U CN214464102U CN 214464102 U CN214464102 U CN 214464102U CN 202023291583 U CN202023291583 U CN 202023291583U CN 214464102 U CN214464102 U CN 214464102U
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Abstract
The utility model belongs to the drilling hydrogeological test field, concretely relates to downhole fixing device of drilling layering test sensor, the device includes thread guide a, top packer, thread guide b, P3 sensor, P2 sensor, bottom packer, P1 sensor, bottom safety cover and thread guide c; wherein, lead ware a fixed connection is in top packer top, lead ware b fixed connection is in top packer below, and P3 sensor and P2 sensor are tied up in lead ware b below, pass through the tube coupling between top packer and the bottom packer, the top fixed connection of lead ware c and bottom packer, bottom safety cover fixed connection is in the bottom of bottom packer, and the P1 sensor is installed in the bottom safety cover. The utility model discloses optimize the pressure-measuring pipe water injection mode, improved the installation effectiveness of device installation in the pit, improved the reliability of the flood head pressure of sensor and groundwater temperature measured data.
Description
Technical Field
The utility model belongs to drilling hydrogeology test field, concretely relates to fixing device in pit of drilling layering test sensor.
Background
The distribution and flow characteristics of underground water in an underground space are related to the water quality, temperature, recoverable quantity, the concentration and distribution range of soluble substances and the retardation mechanism of deep environment on petroleum and nuclide migration, so that the distribution of water head and temperature of the underground water, the permeability and water richness of an aquifer (zone) and the research on the water conductivity and connectivity of a structure are required to be investigated in the works such as underground water resource evaluation and development, underground water pollution investigation and restoration, geothermal resource development, petroleum storage underground water sealing cave depot, radioactive waste disposal and site selection and the like. The method is an important field test means for identifying and evaluating permeable hole sections and weak permeable (water-blocking) hole sections in rock-soil bodies and structures exposed by the drilled holes and obtaining the depth range, permeability and water-rich property of aquifers (zones).
At present, in the drilling layered hydrogeological test at home and abroad, the underground device comprises 2 packers, so that an upper hole section, a test hole section and a lower hole section are isolated in a drilling hole, correspondingly 3 pressure (temperature) sensors are needed, and the water head pressure of the corresponding hole section and the temperature of underground water are measured from top to bottom. When 3 independent pressure sensors are selected, the sensors are generally installed on the upper hole section in a centralized mode, wherein 1 sensor directly measures the water head pressure of the upper hole section and the temperature of underground water, and the water head pressure of the test hole section and the water head pressure of the lower hole section are conducted to the pressure measuring holes of the other 2 sensors through the pressure measuring pipes. At the moment, the underground water temperature measurement values of the test hole section and the lower hole section are unreliable, in addition, the air in the pressure measuring pipe is difficult to be completely emptied in the actual installation process, and the accuracy of the water head pressure measurement values of the test hole section and the lower hole section is difficult to avoid being influenced.
Therefore, it is desirable to provide a downhole fixing device and a fixing method for a borehole stratification test sensor, so as to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough of above-mentioned prior art provides a drilling layering test sensor's fixing device in pit optimizes the pressure-measuring pipe water injection mode, has improved the installation effectiveness of device installation in the pit, has improved the reliability of the head pressure of sensor and groundwater temperature measured data.
The technical scheme of the utility model is that:
a downhole fixing device for a borehole delamination test sensor comprises a lead device a, a top packer, a lead device b, a P3 sensor, a P2 sensor, a bottom packer, a P1 sensor, a bottom end protective cover and a lead device c;
wherein, lead ware a fixed connection is in top packer top, lead ware b fixed connection is in top packer below, and P3 sensor and P2 sensor are tied up in lead ware b below, pass through the tube coupling between top packer and the bottom packer, the top fixed connection of lead ware c and bottom packer, bottom safety cover fixed connection is in the bottom of bottom packer, and the P1 sensor is installed in the bottom safety cover.
And threading holes are formed at the top ends of the thread leading device a, the thread leading device b and the thread leading device c.
The pressure measuring hole of the P3 sensor is connected with the bottom end of the pressure measuring pipe, and the pressure measuring pipe penetrates into the inner pipe of the top packer through the threading hole at the bottom of the thread leading device b and penetrates out of the threading hole at the top of the thread leading device a.
The thread guide a is connected above the top packer through threads.
And the thread guide b is connected below the top packer through threads.
The P3 sensor and the P2 sensor are bundled below the lead device b.
And the thread guide c is connected with the top of the bottom packer through threads.
The top of the bottom end protective cover is connected with the bottom of the bottom packer through threads.
The utility model discloses following beneficial effect has:
(1) the utility model provides an underground fixing device of a drilling layering test sensor, which basically does not change the original installation mode of the underground device, and the underground device is convenient to integrate and install;
(2) the utility model provides a pair of drilling layering test sensor's fixing device in pit, the sensor installation is convenient, need not to the piezometer intraductally, direct measurement test hole section, lower part hole section flood peak pressure, and shorter piezometer pipe opening makes progress, does not basically have the influence to upper portion hole section flood peak pressure measurement accuracy, has improved drilling hydrogeology test measured data's precision and reliability.
Drawings
Fig. 1 is a schematic structural view of an underground fixing device of a drilling layered test sensor provided by the present invention;
in the figure: 1-lead, 2-top packer, 3-lead b, 4-piezometer tube 4, 5-P3 sensor, 6-P2 sensor, 7-bottom packer, 8-P1 sensor, 9-bottom protective cover, 10-lead c.
Detailed Description
In order to make those skilled in the art better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be apparent that the embodiments described below are only some, but not all embodiments of the present invention. Based on the embodiments recorded in the present invention, all other embodiments obtained by those skilled in the art without creative efforts are all within the scope of the present invention.
As shown in FIG. 1, the utility model provides a drilling layering test sensor's downhole fixing device, the device includes lead wire ware a1, top packer 2, lead wire ware b3, P3 sensor 5, P2 sensor 6, bottom packer 7, P1 sensor 8 and bottom safety cover 9.
A lead a1 is threaded above the top packer 2, a lead b3 is threaded below the top packer 2, a P3 sensor 5 and a P2 sensor 6 are strapped below a lead b3,
the top packer 2 is connected with the bottom packer 7 through a pipeline,
the lead wire c10 is screwed to the top of the bottom packer 7, the top of the bottom protection casing 9 is screwed to the bottom of the bottom packer 7, and the P1 sensor 8 is installed in the bottom protection casing 9.
The top packer 2 and the bottom packer 7 are connected through a pipeline to form a test section, and the pressure is directly measured by a P2 sensor 6 which is bundled on the pipeline below a lead device b 3; the distance between the bottom packer 7 and the bottom of the hole is used as a lower hole section, and the pressure is directly measured by a P1 sensor 8 arranged in a bottom end protective cover 9; the distance between the top packer 2 and the ground water level is used as an upper hole section, and the pressure is measured by a P3 sensor 5 bundled below a lead device b3 through a piezometer tube 4; therefore, the pressure of the test section and the pressure of the lower hole section can be directly read, the opening of the piezometer tube 4 is upward, air in the tube can be automatically discharged after entering water, and the piezometer tube 4 is shorter in length and basically has no influence on the precision of the pressure measurement value of the upper hole section.
A method of drilling a downhole securing device of a zonal test sensor, the method comprising the steps of:
step 1, installing a P1 sensor
Step 1.1, a thread leading device c10 is connected with the top of a bottom packer 7 through threads, and the joint is sealed by thread sealing glue of a raw material tape or a pipe;
step 1.2, data at the top of a P1 sensor 8 firstly penetrates through an inner tube at the bottom end of a bottom packer 7 and penetrates out of a threading hole at the top end of a thread leading device a 1;
step 1.3, placing a P1 sensor 8 into a bottom end protection cover 9, then connecting the top of the bottom end protection cover 9 with the bottom of a bottom packer 7 through threads, and sealing the joint by using a thread seal tape or a pipe thread seal glue;
step 1.4, plugging redundant threading holes in a thread leading device c10 connected with the bottom packer 7 by using plugs.
Step 2, installing a P2 sensor 6 and a P3 sensor 5
Step 2.1, the top end and the bottom end of a top packer 2 are respectively in threaded connection with a thread leading device a1 and a thread leading device b3, and joints are sealed by thread sealing glue or pipe thread sealing glue;
2.2, 2 data lines of a P2 sensor 6 and a P3 sensor 5 and a P3 sensor piezometer tube 4 penetrate into an inner tube of the top packer 2 through a threading hole at the bottom of a thread leading device b3 and penetrate out of the threading hole at the top of a thread leading device a 1;
2.3, connecting the bottom end of the pressure measuring tube 4 to a pressure measuring hole of a P3 sensor 5, cutting off the redundant part of an exposed lead device a1 at the top end of the pressure measuring tube 4, and keeping the exposed length of the pressure measuring tube 4 about 5 cm;
step 2.4, the P3 sensor 5 and the P2 sensor 6 are fixedly bound by using adhesive tapes at the lower part of the lead device b 3;
and 2.5, plugging redundant threading holes in the wire leading device a1 and the wire leading device b3 connected with the top plug by using plugs.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. The present invention can adopt the prior art for the content which is not described in detail in the present invention.
Claims (8)
1. The utility model provides a drilling layering test sensor's fixing device in pit which characterized in that: the device comprises a lead device a (1), a top packer (2), a lead device b (3), a P3 sensor (5), a P2 sensor (6), a bottom packer (7), a P1 sensor (8), a bottom end protective cover (9) and a lead device c (10);
wherein, thread guide a (1) fixed connection is in top packer (2) top, thread guide b (3) fixed connection is in top packer (2) below, P3 sensor (5) and P2 sensor (6) are tied up in thread guide b (3) below, pass through the tube coupling between top packer (2) and bottom packer (7), thread guide c (10) and the top fixed connection of bottom packer (7), bottom safety cover (9) fixed connection is in the bottom of bottom packer (7), install in bottom safety cover (9) P1 sensor (8).
2. The downhole fastening device of claim 1, wherein: the top ends of the thread leading device a (1), the thread leading device b (3) and the thread leading device c (10) are provided with threading holes.
3. The downhole fastening device of claim 2, wherein: the pressure measuring hole of the P3 sensor (5) is connected with the bottom end of the pressure measuring pipe (4), and the pressure measuring pipe (4) penetrates into the inner pipe of the top packer (2) through the threading hole at the bottom of the thread leading device b (3) and penetrates out from the threading hole at the top of the thread leading device a (1).
4. The downhole fixture of claim 3, wherein: the thread guide a (1) is connected above the top packer (2) through threads.
5. The downhole fixture of claim 4, wherein: and the thread guide b (3) is connected below the top packer (2) through threads.
6. The downhole fixture of claim 5, wherein: the P3 sensor (5) and the P2 sensor (6) are bundled below the lead device b (3).
7. The downhole fixture of claim 6, wherein: the thread guide c (10) is connected with the top of the bottom packer (7) through threads.
8. The downhole fastening device of claim 7, wherein: the top of the bottom end protective cover (9) is connected with the bottom of the bottom packer (7) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023291583.8U CN214464102U (en) | 2020-12-31 | 2020-12-31 | Underground fixing device of drilling layering test sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023291583.8U CN214464102U (en) | 2020-12-31 | 2020-12-31 | Underground fixing device of drilling layering test sensor |
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| CN214464102U true CN214464102U (en) | 2021-10-22 |
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| CN202023291583.8U Active CN214464102U (en) | 2020-12-31 | 2020-12-31 | Underground fixing device of drilling layering test sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664178A (en) * | 2020-12-31 | 2021-04-16 | 核工业北京地质研究院 | Underground fixing device and method for drilling layered test sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664178A (en) * | 2020-12-31 | 2021-04-16 | 核工业北京地质研究院 | Underground fixing device and method for drilling layered test sensor |
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