CN111980678A - Shearing type horizontal directional drilling geological prospecting in-hole logging instrument protection device - Google Patents
Shearing type horizontal directional drilling geological prospecting in-hole logging instrument protection device Download PDFInfo
- Publication number
- CN111980678A CN111980678A CN202010964347.3A CN202010964347A CN111980678A CN 111980678 A CN111980678 A CN 111980678A CN 202010964347 A CN202010964347 A CN 202010964347A CN 111980678 A CN111980678 A CN 111980678A
- Authority
- CN
- China
- Prior art keywords
- pipe
- guide shaft
- hole
- horizontal directional
- adapter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a protective device for a logging instrument in a geological exploration hole by shear type horizontal directional drilling, which comprises an outer pipe combination, a protective pipe, a drill bit and a cutter, wherein the outer pipe combination comprises an upper protective pipe, a lower protective pipe connected with the upper protective pipe and the drill bit connected with the lower protective pipe; the inner tube testing arrangement combination is located the inside of outer tube combination, including the guiding axle, through the guiding axle connect with the short connector of guiding axle connection and connecting the testing arrangement of short connector lower extreme, the circumference that the guiding axle connects be equipped with outward with the upper and lower protection tube adapter that upper protection tube and lower protection tube are connected. The invention not only ensures that the comprehensive logging device is not abraded by the hole wall when being sent into the hole bottom by the geological exploration hole of the horizontal directional drilling engineering, but also can spray out slurry to flush out rock debris accumulated at the hole bottom in front of the drill bit, thereby protecting the comprehensive logging device from being smoothly pushed inwards. The device is very suitable for protecting and pushing the logging instrument in the geological exploration hole of the horizontal directional drilling engineering, and has wide application prospect.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering investigation and drilling machines, in particular to a protective device for a logging instrument in a shearing type horizontal directional drilling geological investigation hole.
Background
For some tunnel projects with large deep burial distance, the traditional vertical hole geological drilling needs to penetrate through an upper covering layer to reach the stratum where the axis of the tunnel is located, but the geological characteristics of the tunnel axis surrounding rock cannot be truly and comprehensively reflected. If the horizontal directional drilling technology can be applied to geological exploration of ultra-long-distance large-buried-depth underground engineering, an ultra-long-distance horizontal exploration hole is drilled at the entrance end and the exit end of a tunnel, and the geological condition along the underground line can be truly reflected by combining testing means such as comprehensive well logging and the like.
At present, domestic comprehensive well logging is mostly used in a vertical well, the application of a horizontal exploration hole is still blank, tunnel axial trace surrounding rock is explored by combining a horizontal directional drill at present, but because the well logging instrument is sent into the bottom of the hole by a horizontal directional drill rod, the well logging instrument can generate large friction and extrusion force with the side wall of the horizontal directional drilling engineering geological exploration hole, light people can wear the instrument to a certain extent, heavy people can damage the instrument, the well logging instrument cannot be normally used, unnecessary trouble can be brought to the comprehensive well logging of the horizontal exploration hole, and the engineering progress is seriously influenced.
Disclosure of Invention
Based on the defects in the prior art, the technical problem to be solved by the invention is to provide the protective device for the logging instrument in the shearing type horizontal directional drilling geological exploration hole, which has the advantages of simple structure and reasonable design, protects the comprehensive logging instrument from being abraded by the hole wall in the process of being conveyed into the hole bottom by the horizontal directional drilling rod, protects the comprehensive logging instrument from being pushed smoothly inwards, and ensures that the test is carried out smoothly.
In order to achieve the purpose, the invention adopts the following technical measures:
a protective device for a logging instrument in a geological exploration hole by shear type horizontal directional drilling comprises an outer pipe combination, a protective pipe and a drill bit, wherein the outer pipe combination comprises an upper protective pipe, a lower protective pipe connected with the upper protective pipe and the drill bit connected with the lower protective pipe; the inner pipe testing device combination is positioned inside the outer pipe combination and comprises a guide shaft, a short joint connected with the guide shaft through a guide shaft joint and a testing device connected to the lower end of the short joint, and an upper protection pipe adapter and a lower protection pipe adapter connected with the upper protection pipe and the lower protection pipe are arranged outside the circumference of the guide shaft joint; the upper protection tube adapter and the lower protection tube adapter are provided with inner holes for the guide shaft, the guide shaft adapter and the short adapter to pass through; a shearing pin which can be clamped in the upper and lower protection tube adapters is fixed on the guide shaft adapter; the testing device comprises a logging instrument connected with the short joint and a logging instrument protecting head connected to the lower end of the logging instrument; when a drill rod of the horizontal directional drill pushes the outer pipe assembly to move towards the bottom of the hole, slurry flows into the guide shaft through the inner part of the upper protection pipe, flows out of a slurry outlet on the short joint through the short joint, flows into an inner cavity of the lower protection pipe and flows out of the horizontal exploration hole through the drill bit; when the drill rod pushing outer pipe combination of the horizontal directional drill is sent to the bottom of the hole, the drill rod is pumped back to a length larger than that of the testing device, the mud pressure is increased to a pressure value required by shearing of the shearing pin, and after the shearing pin is sheared, the testing device is pushed out of the lower protection pipe by the mud to start detection in the hole under the action of the mud pressure.
Preferably, a threaded hole is formed at a middle portion of the guide shaft coupling, and the shear pin is directly fixed in the guide shaft coupling through the threaded hole.
Further, the inside of upper and lower protection tube adapter is equipped with the right angle step, is used for blocking the shearing pin.
Optionally, the short joint surface is equipped with and is used for preventing that the whole stopper that contracts and move back towards outer nest of tubes combination of inner tube testing arrangement combination, just the short joint is last to be equipped with the mud export in the lower extreme of stopper.
Further, the outer diameter of the guide shaft is the same as the outer diameters of the guide shaft joint and the short joint, and the length of the guide shaft is larger than the total length of the logging instrument and the instrument protection head.
Optionally, the top end of the guide shaft is connected with a top cap, and the top cap is provided with a flow guide groove opening for allowing slurry to flow into the guide shaft; when the inner pipe testing device combination is pushed out of the outer pipe combination by mud, the top cap is clamped on the right-angled steps in the upper protection pipe adapter and the lower protection pipe adapter, and the inner pipe testing device combination is guaranteed not to be pushed out integrally.
Further, the logging cable penetrates out of the guide shaft and the inner part of the short joint and is connected with the logging instrument.
Therefore, the protective device for the logging instrument in the shearing type horizontal directional drilling geological exploration hole has a simple structure, and mainly protects the logging instrument from pushing inwards when the logging instrument is used for detecting the horizontal directional drilling engineering geological exploration hole, so that the logging instrument can be effectively prevented from being rubbed by the hole wall, the risk of instrument damage is reduced, and the comprehensive logging of the horizontal directional drilling engineering geological exploration hole is smoothly carried out. The invention not only ensures that the comprehensive logging device is not abraded by the hole wall when being sent into the hole bottom by the geological exploration hole of the horizontal directional drilling engineering, but also can spray out slurry to flush out rock debris accumulated at the hole bottom in front of the drill bit, thereby protecting the comprehensive logging device from being smoothly pushed inwards. The device is very suitable for protecting and pushing the logging instrument in the geological exploration hole of the horizontal directional drilling engineering, and has wide application prospect.
Drawings
Fig. 1 is a schematic structural diagram of a protective device for a logging tool in a hole in a shearing type horizontal directional drilling geological exploration according to a preferred embodiment of the invention.
FIG. 2 is a schematic structural diagram of the inner tube testing device assembly of the present invention.
Fig. 3 is a schematic structural view of the shear pin of the present invention being clamped on the steps inside the upper and lower protective pipe adapters.
Wherein: 1-logging cable, 2-upper protective pipe joint, 3-upper protective pipe, 4-top cap, 5-guiding shaft, 6-upper and lower protective pipe adaptor, 7-guiding shaft joint, 8-shearing pin, 9-short joint, 10-baffle, 11-mud outlet, 12-logging cable joint, 13-lower protective pipe, 14-logging instrument, 15-logging instrument protective head, 16-drill bit.
Detailed Description
The following describes a protective device for a logging instrument in a hole for shear type horizontal directional drilling geological exploration according to the present invention with reference to fig. 1 to 3.
Referring to fig. 1 and 2, the shear pin type horizontal directional drilling engineering geological exploration borehole logging instrument protection device comprises an outer pipe combination and an inner pipe testing device combination, wherein the outer pipe combination comprises an upper protection pipe 3, an upper protection pipe adapter 6, a lower protection pipe 13 and a drill bit 16. The upper protection pipe 3 is connected with the lower protection pipe 13 through an upper protection pipe adapter 6, and the drill bit 16 is installed at the lower end of the lower protection pipe 13.
The inner pipe testing device combination comprises a top cap 4, a guide shaft 5, a guide shaft joint 7, a shearing pin 8, a short joint 9, a short joint surface baffle 10, a slurry outlet 11, a logging instrument 14 and a logging instrument protecting head 15, wherein the logging instrument 14 and the logging instrument protecting head 15 form the testing device. The top cap 4 in the inner pipe testing device combination is arranged at the top end of the guide shaft 5, and the top cap 4 is arranged in a hollow mode and is provided with a flow guide notch which can enable slurry to flow into the guide shaft 5. The lower end of the guide shaft 5 is connected with a short joint 9 through a guide shaft joint 7, the lower surface of the short joint 9 is provided with a stopper 10 and a slurry outlet 11, the stopper 10 can prevent the whole inner pipe testing device combination from retracting into an outer protection pipe (outer pipe combination), the lower end of the short joint 9 is connected with a logging instrument 14, and the front end of the logging instrument 14 is provided with a protection head 15. The logging cable 1 passes out of the short sub 9 and the inside of the guide shaft 5 and is connected to the logging tool 14 via the logging cable sub 12.
In addition, the internal diameter of the hole of upper and lower protection tube adapter 6 is supporting with guiding shaft 5, makes guiding shaft 5 just slide in the hole of upper and lower protection tube adapter 6, and the inside of upper and lower protection tube adapter 6 is equipped with the right angle step, can block hood 4 and shearing pin 8, and when the inner tube testing arrangement combination was pushed out the outer tube combination by mud, hood 4 card was in on the inside right angle step of upper and lower protection tube adapter 6, the assurance inner tube testing arrangement combination was not wholly released. The outer diameter of the guide shaft 5 is the same as the outer diameter of the guide shaft joint 7 and the short joint 9, and the length of the guide shaft 5 is slightly larger than the total length of the logging instrument 14 and the instrument protection head 15.
Referring to fig. 3, the lower end of the guide shaft 5 is connected with a guide shaft joint 7, the upper and lower protection pipe joints 6 are sleeved outside the circumference of the guide shaft joint 7, a threaded hole is formed in the middle of the guide shaft joint 7, a shear pin 8 with different shearing forces can be fixed in the threaded hole, and the shear pin 8 is fixed in the guide shaft joint 7 through the threaded hole, protrudes out of a part of the threaded hole, and is clamped on an inner step of the upper and lower protection pipe joints 6. The shearing pin 8 has different shearing force required for shearing according to different diameters, when the mud pressure is increased to a designed value, the shearing pin 8 is sheared, and the inner pipe testing device is integrally pushed forwards.
The use principle of the protective device for the logging instrument in the hole in the shear type horizontal directional drilling geological exploration will be briefly described with reference to fig. 1 to 3 and the structural description above:
when the horizontal directional drilling is combined with comprehensive well logging to detect a horizontal exploration hole, the device is connected with a drill rod of the horizontal directional drilling, the device is slowly sent to the bottom of the hole by a drilling machine, in the sending process, slurry flows into the upper protection pipe 3 through the drill rod, flows into the guide shaft 5 from the inner part of the upper protection pipe 3, flows out from the slurry outlet 11 through the short joint 9, flows into the inner cavity of the lower protection pipe 13, and flows out into the horizontal exploration hole through the drill bit 16.
During the pushing process of the drill rod by using the horizontal directional drill, the mud pressure borne by the inner pipe testing device assembly (shown in figure 2) is borne by the shearing pin 8, so that the mud pressure in the drill rod is controlled to be a certain value during the pushing process. When the device is sent to the bottom of a hole, a drill rod is pumped back to be slightly longer than the length of the testing device, the mud pressure is increased to a pressure value required by shearing of the shearing pin 8, after the shearing pin 8 is sheared, the testing device is pushed out of the lower protection tube 13 by the mud under the action of the mud pressure, the rear end of the guide shaft is clamped on the steps in the adapters 6 of the upper protection tube and the lower protection tube by the top cap 4, the inner tube testing device combination (shown in figure 2) is guaranteed not to be pushed out integrally, the comprehensive well logging instrument 14 is opened to start in-hole detection, and the drill rod is slowly pulled out until the detection at the hole.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can understand that the modifications or substitutions within the technical scope of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a shearing type horizontal directional drilling geological prospecting downthehole logging instrument protection device which characterized in that includes:
the outer pipe assembly comprises an upper protection pipe, a lower protection pipe connected with the upper protection pipe and a drill bit connected with the lower protection pipe;
the inner pipe testing device combination is positioned inside the outer pipe combination and comprises a guide shaft, a short joint connected with the guide shaft through a guide shaft joint and a testing device connected to the lower end of the short joint, and an upper protection pipe adapter and a lower protection pipe adapter connected with the upper protection pipe and the lower protection pipe are arranged outside the circumference of the guide shaft joint; the upper protection tube adapter and the lower protection tube adapter are provided with inner holes for the guide shaft, the guide shaft adapter and the short adapter to pass through; a shearing pin which can be clamped in the upper and lower protection tube adapters is fixed on the guide shaft adapter;
the testing device comprises a logging instrument connected with the short joint and a logging instrument protecting head connected to the lower end of the logging instrument;
when a drill rod of the horizontal directional drill pushes the outer pipe assembly to move towards the bottom of the hole, slurry flows into the guide shaft through the inner part of the upper protection pipe, flows out of a slurry outlet on the short joint through the short joint, flows into an inner cavity of the lower protection pipe and flows out of the horizontal exploration hole through the drill bit;
when the drill rod pushing outer pipe combination of the horizontal directional drill is sent to the bottom of the hole, the drill rod is pumped back to a length larger than that of the testing device, the mud pressure is increased to a pressure value required by shearing of the shearing pin, and after the shearing pin is sheared, the testing device is pushed out of the lower protection pipe by the mud to start detection in the hole under the action of the mud pressure.
2. The apparatus as claimed in claim 1, wherein the guide shaft joint has a threaded hole formed at a middle portion thereof, through which the shear pin is directly fixed in the guide shaft joint.
3. The apparatus as claimed in claim 1, wherein the upper and lower protective pipe adapters are provided with right angle steps inside for locking the shear pins.
4. The apparatus as claimed in claim 1, wherein the short joint has a stopper on its surface for preventing the inner tube testing apparatus assembly from moving back into the outer tube assembly, and a slurry outlet at the lower end of the stopper.
5. A shear type horizontal directional drilling tool protector in a borehole for geological exploration, according to claim 1, wherein said guide shaft has an outer diameter equal to the outer diameter of said guide shaft joint and said short joint, and wherein the length of said guide shaft is greater than the total length of said tool and said tool protector.
6. The apparatus as claimed in claim 3, wherein the top cap is connected to the top end of the guiding shaft, and the top cap has a flow guiding slot for guiding slurry into the guiding shaft;
when the inner pipe testing device combination is pushed out of the outer pipe combination by mud, the top cap is clamped on the right-angled steps in the upper protection pipe adapter and the lower protection pipe adapter, and the inner pipe testing device combination is guaranteed not to be pushed out integrally.
7. A shear type horizontal directional drilling tool protector in a borehole of geological exploration, according to claim 1, wherein said logging cable is threaded through said guide shaft and inside said short joint and connected to said logging tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010964347.3A CN111980678A (en) | 2020-09-15 | 2020-09-15 | Shearing type horizontal directional drilling geological prospecting in-hole logging instrument protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010964347.3A CN111980678A (en) | 2020-09-15 | 2020-09-15 | Shearing type horizontal directional drilling geological prospecting in-hole logging instrument protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111980678A true CN111980678A (en) | 2020-11-24 |
Family
ID=73449762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010964347.3A Pending CN111980678A (en) | 2020-09-15 | 2020-09-15 | Shearing type horizontal directional drilling geological prospecting in-hole logging instrument protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111980678A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145452A (en) * | 2023-07-10 | 2023-12-01 | 中国地质大学（武汉） | Up-down separation type detector protection tube transmission mechanism for deep detection |
-
2020
- 2020-09-15 CN CN202010964347.3A patent/CN111980678A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145452A (en) * | 2023-07-10 | 2023-12-01 | 中国地质大学（武汉） | Up-down separation type detector protection tube transmission mechanism for deep detection |
| CN117145452B (en) * | 2023-07-10 | 2024-03-26 | 中国地质大学（武汉） | Up-down separation type detector protection tube transmission mechanism for deep detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5163522A (en) | Angled sidewall coring assembly and method of operation | |
| US10450801B2 (en) | Casing windowing method and tool using coiled tubing | |
| CA1071529A (en) | Method and apparatus for running and retrieving logging instruments in highly deviated well bores | |
| CA1256017A (en) | Method and apparatus for displacing logging tools in deviated wells | |
| JPS6160233B2 (en) | ||
| US10711527B2 (en) | Drill bit and method for casing while drilling | |
| CN112097726B (en) | Device and method for measuring expansion deformation of protected layer | |
| JPS6073996A (en) | Pit interior measuring and/or work conducting method and apparatus | |
| CN112647877B (en) | Soft coal seam branch drilling and pipe lowering guiding device and efficient extraction method | |
| CN111980678A (en) | Shearing type horizontal directional drilling geological prospecting in-hole logging instrument protection device | |
| CN205977150U (en) | Punching cable logging carries technology tubular column in horizontal well coiled tubing | |
| US20130062073A1 (en) | Packer Assembly with a Standoff | |
| CN212614674U (en) | Shearing type horizontal directional drilling geological prospecting in-hole logging instrument protection device | |
| CN105089629A (en) | Horizontal well rod conveying well-logging method | |
| CN112664181B (en) | Imaging device for drilling and imager comprising same | |
| JPS60253694A (en) | Method and apparatus for performing operation of measurementin oblique well | |
| US6327919B1 (en) | Method for taking a soil sample from a horizontal borehole | |
| JP4081499B2 (en) | Exploration device well insertion device and exploration device well insertion method | |
| CN113482535A (en) | Self-adaptive underground steering device and construction method | |
| CN210033281U (en) | Composite pilot coal bed gas drilling device and drilling well for underground coal reservoir | |
| CN113237453A (en) | Automatic measuring device and method for expansion deformation of push-expansion type protected layer | |
| CN207583321U (en) | The used drilling rod well logging target drill of drifting | |
| CN106593311A (en) | Drilling tool and use method thereof | |
| CN219365945U (en) | Sampling drill rod for geological exploration | |
| CN219932059U (en) | Hole guiding device for complex soil layer in-situ test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210121 Address after: 430056 No. 18 Pioneering Road, Wuhan Economic and Technological Development Zone, Hubei Province Applicant after: CCCC Second Highway Survey and Design Institute Co.,Ltd. Address before: 430050 498 parrot Avenue, Hanyang District, Wuhan, Hubei Applicant before: WUHAN ZHONGJIA GEOTECHNICAL ENGINEERING Co.,Ltd. |
|
| TA01 | Transfer of patent application right |