A construction method for directional kilometer-long boreholes under multiple disaster coupling conditions

Abstract

This invention discloses a construction method for directional kilometer-long boreholes under multi-hazard coupling conditions, belonging to the field of directional drilling technology. The specific steps of this method are as follows: S1: Erecting the drilling platform: The ground is leveled using a bulldozer, and a drilling platform is erected on the ground with corresponding structures to ensure the stability of the subsequent drilling process; S2: Real-time drilling measurement: An ultrasonic borehole quality detector is installed near the drill bit, and the drill bit continuously drills at the borehole location. The ultrasonic borehole quality detector can detect the borehole diameter in real time and upload the data to the operator's terminal for display; S3: Laying reinforced pipes: Reinforced pipes are installed perpendicular to the ground inside the borehole. This method for directional kilometer-long boreholes under multi-hazard coupling conditions offers a higher level of safety during construction and results in higher structural strength of the borehole.

Description

Technical Field

[0001] This invention belongs to the field of directional drilling technology, and in particular to a construction method for directional kilometer-long boreholes under multiple disaster coupling conditions. Background Technology

[0002] Directional drilling is a pipeline construction technique in the engineering industry, generally used for the extraction and construction of resources such as oil and natural gas. It uses the drill bit of a directional drilling rig to drill holes in a specific location. In order to improve the safety of the extraction process, it is necessary to design a construction method for directional kilometer-long boreholes under multiple disaster coupling conditions.

[0003] However, existing construction methods have problems such as insufficient safety during construction and insufficient drilling strength. Summary of the Invention

[0004] The purpose of this invention is to provide a construction method for directional kilometer-long boreholes under multiple disaster coupling conditions, so as to solve the problems mentioned in the background art.

[0005] Technical Solution: A construction method for directional kilometer-long boreholes under multi-hazard coupling conditions. The specific steps of this construction method for directional kilometer-long boreholes under multi-hazard coupling conditions are as follows:

[0006] S1: Erecting the drilling platform: Level the ground with a bulldozer, then erect a drilling platform on the ground and provide corresponding structures to ensure the stability of the subsequent drilling process;

[0007] S2: Real-time drilling measurement: An ultrasonic hole quality detector is installed near the drill bit. Then, the drill bit is used to continuously drill at the drilling location. The ultrasonic hole quality detector can detect the diameter of the drilled hole in real time and upload it to the terminal display of the staff.

[0008] S3: Laying reinforced pipes: Install the reinforced pipes vertically into the borehole, then seal the top of the borehole, and use a pump to extract silt and gas from the borehole through multiple evenly spaced openings on the sidewall of the reinforced pipes to ensure the safety of subsequent construction.

[0009] S4: Smoothing the borehole sidewalls: The added transmission equipment drives the reinforced pipe to rotate slowly. The steel brush on the outer sidewall of the reinforced pipe will cut and smooth the borehole sidewalls during the rotation, making the subsequent grouting process smoother.

[0010] S5: Grouting: Insert a plug pipe with the same outer diameter and inner diameter as the reinforcing pipe into the reinforcing pipe to shield the opening. Then, mix the grout according to the specified ratio and stir it evenly before heating. Inject the heated grout between the reinforcing pipe and the side wall of the borehole.

[0011] S6: Remove the relevant equipment; after the slurry has cooled completely, remove the sealing pipe from the reinforced pipe, and then remove the drilling platform.

[0012] In a further embodiment, support rods are installed at the four top corners of the drilling platform, and a protective platform is installed between the tops of the multiple support rods.

[0013] In a further embodiment, two intersecting inclined ramps are symmetrically installed on the top of the protective platform.

[0014] In a further embodiment, a water storage tank is provided on the top of the protective platform, and multiple drainage holes are evenly provided on the top of the inclined plate.

[0015] In a further embodiment, multiple sidewalls of the drilling platform are welded with reinforcing plates, and the reinforcing plates are fixed to the ground by screws.

[0016] In a further embodiment, a warning line is set up around the drilling platform at 100-meter intervals, and warning signs are set up outside the warning line.

[0017] In a further embodiment, the top of the drilling platform remains horizontal and parallel to the ground.

[0018] In a further embodiment, the average distance between the outer wall of the reinforced pipe and the side wall of the borehole is 5-10 cm.

[0019] In a further embodiment, the heating temperature of the slurry is set to 100-120°C.

[0020] The technical effects and advantages of this invention are as follows: This method for directional kilometer drilling under multi-hazard coupling conditions ensures the stability of the drilling process through a drilling platform and an ultrasonic borehole quality testing instrument. Furthermore, the installation of reinforced pipes can extract silt and gas from the borehole, thus ensuring a higher level of safety during the construction process.

[0021] The steel brush used to reinforce the pipe can cut the sidewall of the borehole flat. In addition, the ample distance between the reinforced pipe and the borehole allows the grout to flow smoothly and fix the reinforced pipe and the sidewall of the borehole together during grouting, resulting in higher structural strength of the borehole.

[0022] This method for directional kilometer-long borehole drilling under multi-hazard coupling conditions offers a higher level of safety during construction and results in higher structural strength of the borehole. Attached Figure Description

[0023] Figure 1 This is a construction diagram of the present invention;

[0024] Figure 2 This is a flowchart of the steps of the present invention.

[0025] In the diagram: 1. Drilling platform; 2. Reinforced pipe; 3. Opening; 4. Steel brush; 5. Support rod; 6. Protective platform; 7. Inclined plate; 8. Reinforcing plate. Detailed Implementation

[0026] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0027] To address the problems raised, the following were designed: Figures 1 to 2 The present invention discloses a construction method for directional kilometer-long borehole drilling under multiple hazard coupling conditions. The specific steps of this construction method are as follows:

[0028] S1: Erecting Drilling Platform 1: Level the ground with a bulldozer. After leveling, measure the ground level with a level instrument to ensure it is level. Then, erect Drilling Platform 1 and its corresponding structure on the ground. Set up a warning line every 100 meters around Drilling Platform 1 and set up warning signs outside the warning line to prevent unauthorized personnel from entering and affecting the construction. Keep the top of Drilling Platform 1 level and parallel to the ground to ensure the stability of the drilling machine during drilling.

[0029] Support rods 5 are screwed to the four corners of the top of the drilling platform 1. A protective platform 6 is welded between the tops of the multiple support rods 5 to prevent rain and snow from affecting the drilling. Two intersecting inclined plates 7 are symmetrically installed on the top of the protective platform 6. A water storage tank is opened on the top of the protective platform 6. Multiple drainage holes are evenly opened on the top of the inclined plates 7. Rainwater will fall into the water storage tank through the drainage holes for collection and backup. Reinforcing plates 8 are welded to multiple side walls of the drilling platform 1, and the reinforcing plates 8 are screwed to the ground to ensure the stability of the subsequent drilling process.

[0030] S2: Real-time drilling measurement: An ultrasonic hole quality inspector (its model does not affect the function of this invention, so it is not limited) is installed near the drill bit. At the same time, a wireless network card is also installed so that the ultrasonic hole quality inspector can transmit data. Then, the drill bit is used to continuously drill at the drilling position. The ultrasonic hole quality inspector can use existing principles to detect the hole diameter in real time and upload it to the operator's terminal display, so that the operator can understand the drilling status in real time. If a large change in hole diameter is encountered, drilling is stopped immediately.

[0031] S3: Laying reinforced pipe 2: Install reinforced pipe 2 vertically into the borehole using the existing method. The top of reinforced pipe 2 is slightly higher than the top of the drilling platform 1 to facilitate subsequent installation with transmission equipment. The average distance between the outer wall of reinforced pipe 2 and the side wall of the borehole is 5-10cm to ensure that the grout can flow smoothly during grouting. Then, seal the top of the borehole and use a pump to extract silt and gas from the borehole through multiple evenly spaced openings 3 on the side wall of reinforced pipe 2 to ensure the safety of subsequent construction.

[0032] S4: Smoothing the borehole sidewalls: A transmission device connected to the top of the reinforcing pipe 2 is installed on the drilling platform 1. The reinforcing pipe 2 is slowly rotated by the added transmission device. The steel brush 4 welded to the outer sidewall of the reinforcing pipe 2 will cut and smooth the sidewall of the borehole during the rotation process, so as to avoid protrusions on the sidewall of the borehole from affecting the smooth flow of grout, making the subsequent grouting process smoother.

[0033] S5: Perform drilling grouting: Insert a sealing pipe with the same outer diameter and inner diameter as the reinforcing pipe 2 into the reinforcing pipe 2 in the existing way to shield the opening 3 and prevent the grout from flowing into the reinforcing pipe 2 from the opening 3, thus avoiding waste. Then, mix the grout according to the specified ratio and stir it evenly before heating it. The heating temperature of the grout is set to 100-120℃, at which time the grout flows more smoothly. Inject the heated grout between the reinforcing pipe 2 and the side wall of the borehole.

[0034] S6: Remove the relevant equipment; seal the top of the borehole, wait for the slurry to cool completely, then remove the sealing pipe from the reinforcing pipe 2, and then remove the drilling platform 1 to obtain a borehole structure with high structural strength.

[0035] Working principle

[0036] The construction method for directional kilometer drilling under multiple disaster coupling conditions involves leveling the ground and then installing the drilling platform 1 at the drilling site. The drilling platform 1 is fixed to the ground by the screws of the reinforcing plate 8.

[0037] Then, the drill bit of the drilling machine is used to drill the hole. During the drilling process, the diameter of the hole is detected in real time by an ultrasonic hole quality detector using existing principles and the data is uploaded to the terminal of the operator. If a large change in the hole diameter is detected, the drilling is stopped immediately.

[0038] The reinforced pipe 2 is installed vertically to the ground in the borehole using the existing method. Then, the top of the borehole is sealed and a pump is used to extract the sludge and gas from the borehole through multiple openings 3 evenly opened on the side wall of the reinforced pipe 2, ensuring the safety of subsequent construction.

[0039] The added transmission device drives the reinforced pipe 2 to rotate slowly. The steel brush 4 on the side wall of the reinforced pipe 2 will cut and flatten the side wall of the borehole during the rotation, making the subsequent grouting process smoother.

[0040] A sealing pipe is inserted into the reinforcing pipe 2 for sealing. Then, the grout is mixed according to the specified ratio and stirred evenly before being heated. The heated grout is then poured between the reinforcing pipe 2 and the side wall of the borehole.

[0041] After the slurry has cooled completely, the sealing pipe, the reinforcing pipe 2, and the drilling platform 1 are removed in sequence to obtain a drilling structure with high structural strength.

[0042] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction method for directional kilometer-long boreholes under multi-hazard coupling conditions, characterized in that: The specific steps of the construction method for directional kilometer-long boreholes under multi-hazard coupling conditions are as follows: S1: Erecting a drilling platform (1): Level the ground with a bulldozer, then erect a drilling platform (1) on the ground and provide corresponding structures to ensure the smoothness of the subsequent drilling process; S2: Real-time drilling measurement: An ultrasonic hole quality detector is installed near the drill bit. Then, the drill bit is used to continuously drill at the drilling location. The ultrasonic hole quality detector can detect the diameter of the drilled hole in real time and upload it to the terminal display of the staff. S3: Laying reinforced pipe (2): Install the reinforced pipe (2) vertically in the borehole, then seal the top of the borehole, and use a pump to extract the silt and gas from the borehole through multiple openings (3) evenly opened on the side wall of the reinforced pipe (2) to ensure the safety of subsequent construction. S4: Smoothing the sidewall of the borehole: The transmission device installed drives the reinforced pipe (2) to rotate slowly. The steel brush (4) on the outer sidewall of the reinforced pipe (2) will cut the sidewall of the borehole to smooth during the rotation, making the subsequent grouting process smoother. S5: Grouting: Insert a sealing pipe with the same outer diameter and inner diameter as the reinforcing pipe (2) into the reinforcing pipe (2) to shield the opening (3), then mix the grout according to the specified ratio and stir evenly before heating, and then inject the heated grout between the reinforcing pipe (2) and the side wall of the borehole. S6: Remove the relevant equipment; after the slurry has cooled down, remove the sealing pipe from the reinforcing pipe (2), and then remove the drilling platform (1).

2. The construction method for directional kilometer-long boreholes under multi-hazard coupling conditions according to claim 1, characterized in that: The drilling platform (1) is equipped with support rods (5) at the top four corners, and a protective platform (6) is installed between the tops of the multiple support rods (5).

3. The construction method for directional kilometer-long boreholes under multi-hazard coupling conditions according to claim 2, characterized in that: The top of the protective platform (6) is symmetrically equipped with two intersecting inclined plates (7).

4. The construction method for directional kilometer-long boreholes under multi-hazard coupling conditions according to claim 3, characterized in that: The top of the protective platform (6) is provided with a water storage tank, and the top of the inclined plate (7) is provided with multiple drainage holes evenly distributed.

5. The construction method for directional kilometer-long boreholes under multi-hazard coupling conditions according to claim 1, characterized in that: The drilling platform (1) has multiple side walls welded with reinforcing plates (8), and the reinforcing plates (8) are fixed to the ground by screw rods.

6. The construction method for directional kilometer-long boreholes under multi-hazard coupling conditions according to claim 1, characterized in that: The drilling platform (1) is surrounded by a perimeter of 100 meters, and warning signs are set up outside the perimeter.

7. The construction method for directional kilometer-long boreholes under multi-hazard coupling conditions according to claim 1, characterized in that: The top of the drilling platform (1) is kept horizontal and parallel to the ground.

8. The construction method for directional kilometer-long boreholes under multi-hazard coupling conditions according to claim 1, characterized in that: The average distance between the outer wall of the reinforced pipe (2) and the side wall of the borehole is 5-10 cm.

9. The construction method for directional kilometer-long boreholes under multi-hazard coupling conditions according to claim 1, characterized in that: The heating temperature of the slurry is set to 100-120℃.

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