CN112814650A - Hole measuring process for directional drilling of wireless probe and pipe back-dragging risk assessment method - Google Patents
Hole measuring process for directional drilling of wireless probe and pipe back-dragging risk assessment method Download PDFInfo
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- CN112814650A CN112814650A CN202110007705.6A CN202110007705A CN112814650A CN 112814650 A CN112814650 A CN 112814650A CN 202110007705 A CN202110007705 A CN 202110007705A CN 112814650 A CN112814650 A CN 112814650A
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- 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
- E21B47/00—Survey of boreholes or wells
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
Abstract
The invention provides a hole measuring process for directionally drilling a wireless probe and a pipeline back-dragging risk assessment method, wherein the hole measuring process comprises the following steps: a probe cabin provided with a wireless probe is additionally arranged behind the last reamer of the hole cleaning procedure; recording the serial number of a drill rod where the probe cabin is located, and calculating the position of the drill rod in a hole measurement interval according to the drilling record of the guide hole so as to determine a ground signal area; placing a receiver in the signal area and collecting data; after the probe cabin advances by the length of one drill rod, repeating the steps except for the probe cabin until the probe cabin exceeds the hole testing interval; and processing the data to obtain the pore-forming condition of the pore channel in the pore-measuring interval. According to the invention, the probe cabin is additionally arranged in the hole cleaning procedure of the directional drill, the hole channel condition after hole cleaning is measured, an evaluation basis is provided for the subsequent pipe back dragging risk, and the occurrence of the conditions that a main pipe is blocked and a reamer is dead when encountering sand setting can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of hole quality evaluation of petroleum and natural gas directional drilling, in particular to a hole measuring process of a directional drilling wireless probe capable of measuring parameters such as hole angles and a risk evaluation method of directional drilling pipeline back dragging.
Background
In the existing oil and gas directional drilling and crossing engineering, the quality of a hole subjected to reaming is not evaluated by a good method in the prior art, the hole is generally judged by the reaming time, the torque, the tension and the condition that drilling cuttings are carried by mud, more is judged by depending on the experience of constructors, the evaluation error is large, and the last step directly influencing the directional drilling is also the most critical step, namely the main pipeline is dragged back.
In the past construction, the factors depending on 'fortune' account for a certain proportion, the risk in back dragging cannot be effectively controlled, the quality of the pore channel after hole cleaning cannot be effectively judged, and the situations that a main pipe meets a clamp or a reamer meets sand setting and reports the dead cannot be evaluated in back dragging.
Disclosure of Invention
The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. For example, an object of the present invention is to provide a hole measurement process for a directional drilling wireless probe, a hole measurement system, and a risk assessment method for pipe back dragging of a directional drilling, so as to solve the problem that the quality of a hole cleaned by a hole cleaning method cannot be effectively assessed in the prior art.
In order to achieve the above object, an aspect of the present invention provides a process for directionally drilling a hole of a wireless probe. The hole measuring process comprises the following steps: a probe cabin is additionally arranged behind the last reamer of the hole cleaning procedure, and a wireless probe is configured in the probe cabin; recording a drill rod serial number of a drill rod where the probe cabin is located, and calculating the position of the drill rod corresponding to the drill rod serial number in a hole measurement interval according to a guide hole drilling record so as to determine a ground signal area; placing a receiver in the signal area and collecting data; after the probe cabin advances for the length of the whole drill rod in the hole measuring interval, repeating the steps except for installing the probe cabin until the probe cabin exceeds the hole measuring interval; processing the data to obtain the pore-forming condition of the pore channel in the pore-measuring interval; the wireless probe can transmit an inclination angle parameter signal of the wireless probe in a to-be-detected interval to the ground in real time, the receiver can receive and record the signal transmitted by the wireless probe, and the hole measuring interval is a part or all of the pore channels from the unearthed point to the unearthed point.
In an exemplary embodiment of the invention, the drill rod serial number may be one of the numbers of the hole cleaning records, and the hole cleaning record may be the number of the drill rod in which the first reamer enters the tunnel in the hole cleaning procedure as the first drill rod record of the hole cleaning.
In an exemplary embodiment of the present invention, the signal region may be determined by: calculating the projection position of a drill rod corresponding to the probe cabin on a connecting line of the unearthed point and the unearthed point according to the drilling record of the guide hole; one defined area at the location is the signal area.
In an exemplary embodiment of the invention, the data collected may include data at a midpoint of a length distance of each completed drill pipe and at an end point near an end of the point of penetration for a hole cleaning procedure.
In an exemplary embodiment of the present invention, the hole measuring process may further include a step of calibrating a ranging signal of the probe before cleaning the hole, wherein the step of calibrating includes: placing the probe cabin on the ground; placing the receiver in a debugging mode at a specified distance vertical to the direction of the probe cabin; and (4) calibrating the measured distance value, and performing the steps except for placing the probe cabin on the ground more than 1 time.
In an exemplary embodiment of the invention, the data may include a depth parameter of the bore, and the data may be processed by one or more of making a slope angle curve of the bore, lofting a drill pipe, and tabular visual analysis.
In an exemplary embodiment of the invention, the port forming profile may include one or more of a change in inclination angle, a radius of curvature of the port, and a range of drill pipe break angles.
In an exemplary embodiment of the present invention, the hole measuring process may further include performing a second hole cleaning and measuring operation when the hole forming condition does not meet the pipe back-dragging condition.
Another aspect of the present invention provides a risk assessment method for directional drilling of a pipe back drag, the method comprising the steps of: judging the risk level of the back dragging of the pipeline according to the measurement result of the hole measuring process of the directional drilling wireless probe, wherein when the measurement result meets the back dragging standard, the risk level of the back dragging of the pipeline is A, which indicates that the back dragging of the pipeline can be carried out; otherwise, the pipeline back-dragging risk grade is B, the pipeline is not suitable for direct back-dragging, and the hole is cleaned again.
Yet another aspect of the present invention provides a bore measurement system comprising: the device comprises a drill rod, a plurality of reamers, a directional drilling machine, a probe cabin, a receiver and a ground signal area determination unit, wherein the drill rod, the plurality of reamers, the probe cabin and the directional drilling machine are sequentially connected in series, and the plurality of reamers are arranged at intervals; the system comprises a probe cabin, a wireless probe, a sensor and a controller, wherein the probe cabin is additionally arranged behind a last reamer and is provided with the wireless probe, and the wireless probe can transmit an inclination angle parameter signal of the wireless probe in a to-be-detected interval to the ground in real time; the directional drilling machine is positioned on the ground and can enable the drill rod to have the functions of drilling and pulling back; the ground signal area determination unit is configured to record a drill rod serial number of a drill rod where the probe cabin is located, and calculate the position of the drill rod corresponding to the drill rod serial number in a hole measurement interval according to a pilot hole drilling record so as to determine a ground signal area; the receiving instrument is arranged in the signal area and can receive and record signals transmitted by the wireless probe; and the data processing unit is used for obtaining the pore-forming condition of the pore channel in the pore-measuring interval, wherein the pore-measuring interval is a part or all of the pore channels between the unearthing point and the burying point.
Compared with the prior art, the invention has the beneficial effects that: the hole measuring process and the hole measuring system of the directional drilling wireless probe and the risk evaluation method of the directional drilling pipeline drag back are provided, the probe cabin is additionally arranged in a hole cleaning procedure of the directional drilling to upload pore channel data to a ground receiver, and the pore channel condition after hole cleaning is obtained through data processing, so that an evaluation basis is provided for the subsequent pipeline drag back risk, the judgment of the quality of a hole through construction experience is avoided, and the occurrence of the condition that a main pipe meets a clamp and a reamer and is subjected to sand setting and death reporting is effectively reduced.
Drawings
FIG. 1 is a schematic diagram illustrating a process flow of a hole-measuring process of a directional drilling wireless probe according to the present invention;
FIG. 2 illustrates an electronic map-aided survey map of an exemplary embodiment of a hole-measuring process of a directional drilling wireless probe of the present invention;
FIG. 3 illustrates a process state diagram for one exemplary embodiment of a hole-gauging process for a directional drilling wireless probe of the present invention;
FIG. 4 illustrates a drill pipe loft view of an exemplary embodiment of a hole gauging process of the present invention for directional drilling of a wireless probe.
Reference numerals:
1-directional drilling machine, 2-soil entry point, 3-directional drilling curve, 4-rock reamer, 5-barrel reamer, 6-probe cabin, 7-receiver, 8-soil exit point and 9-signal area.
Detailed Description
Hereinafter, a hole measuring process of the directional drilling wireless probe according to the present invention will be described in detail with reference to the exemplary embodiments and the accompanying drawings.
Example 1
Fig. 1 shows a schematic view of a hole measuring process of the directional drilling wireless probe of the invention.
In one exemplary embodiment of the present invention, as shown in fig. 1, a process for directionally drilling a bore of a wireless probe includes the steps of:
and (3) adding a probe cabin after the last reamer of the hole cleaning procedure, wherein the probe cabin is provided with a wireless probe. For example, the construction process sequence of directional drilling is pilot hole drilling → reaming (the number of reaming is determined according to the size of the back dragging pipe diameter) → cleaning hole → pipeline back dragging. For example, the probe compartment may or may not be installed at the first drill pipe after the last reamer is installed. Additionally, the sonde compartment is typically shorted between two drill pipes (e.g., the sonde compartment is shorted by a threaded connection at both ends).
And recording the serial number of the drill rod where the probe cabin is positioned, and calculating the position of the drill rod corresponding to the serial number of the drill rod in the hole measuring interval according to the drilling record of the guide hole so as to determine a ground signal area. That is, the pore measurement interval refers to the pore interval in which the pore condition needs to be evaluated; the tunnel interval can be a complete tunnel interval from the unearthed point to the unearthed point, or can be a part or a plurality of parts of tunnel intervals, and the layout can be carried out according to the actual needs of the engineering. For example, the drill rod serial number may be one of the hole cleaning records, wherein the hole cleaning record may be the number of the drill rod in which the first reamer enters the tunnel in the hole cleaning procedure as the first drill rod record for hole cleaning. For example, the pilot hole drilling record refers to data corresponding to each drill rod in a pilot hole drilling program, and the horizontal projection distance of the drill rod can be calculated by finding the same drill rod corresponding to the serial number of the drill rod in the data. For example, the corresponding position of the drill rod may be determined by: calculating the horizontal projection distance from the drill rod to the unearthing point according to the drilling record of the guide hole; connecting the soil-in point and the soil-out point on a map into a straight section; the length of the straight section, which is taken out of the horizontal projection distance, is the position of the drill rod on the ground. In addition, after the position of the first drill rod in the hole measuring interval is determined, the position of the later drill rod can be directly determined through the relative position of the later drill rod and the first drill rod, and the efficiency is higher. In addition, further, the position of a drill rod where the probe cabin is located is determined by utilizing an electronic map with real-time positioning, and in the electronic map, data scales are arranged between the unearthed point and the unearthed point to display the distance in a segmented mode; then finding out the specific position of the drill rod where the probe cabin is located through the guide hole drilling record; through the real-time positioning of the detection personnel, whether the detection personnel are located at the position of the drill rod where the probe cabin is located can be intuitively judged, the time from the detection personnel to a signal area is greatly shortened by the mode, and the detection efficiency can be remarkably improved. For example, the ground signal area refers to a defined area of the position of the drill rod on the ground, namely the ground signal area (for example, the projection of a conical area, which diverges from the position of the probe cabin, on the ground).
And placing the receiver in the signal area to acquire data. For example, the collected data may include data of the middle point and the end point near one end of the soil entry point of each drill rod completed in the hole cleaning procedure, or data of other points; and is not limited to 2, but may be plural; the more the number of the collected points is, the more accurate the reflected data is, and the more close the real situation of the pore channel is. In addition, the data may be more accurate and reliable as the driller may rotate the tool face to the same orientation as the data is collected for the points (e.g., the driller may point the tool face to a point or a defined area of the point as the data is collected for all of the drill rods). In addition, the data may also include a depth parameter, which is collected near directly above the probe capsule. For example, the depth parameter may also be able to check certain other data acquired (e.g., tilt data). In addition, before the probe cabin is installed, the method can also comprise the ranging calibration of the wireless probe, and the calibration step comprises the following steps: placing the probe cabin on the ground; placing the receiver in a debugging mode at a specified distance vertical to the direction of the probe cabin; and (4) calibrating the measured distance value, and performing the steps except for placing the probe cabin on the ground more than 1 time. By calibrating this step, the depth parameter can be made more accurate. In addition, the receiving instrument can also carry out secondary data transmission to the remote display instrument, so that the efficiency and the safety of the measuring point can be improved (for example, when the acquired point is in a terrain dangerous area, the personnel configuration of the measuring point can be reduced, and the data can be directly transmitted to the remote display instrument for acquisition).
And after the probe cabin advances for the distance of the length of the whole drill rod in the hole measuring interval, repeating the steps except for the probe cabin until the probe cabin exceeds the hole measuring interval. That is, after the point data to be collected on the drill rod is collected, the drill rod pulling-back operation needs to be continued until the next drill rod collecting point is reached, and the data collection of all the point data to be collected in the hole measuring interval is completed.
And processing the data to obtain the pore-forming condition of the pore channel in the pore-measuring interval. The data processing mode can be visual analysis of a table, can also be used for making an inclination angle change curve of a pore channel, and can also be used for obtaining a graph capable of reflecting the real drill rod condition through the lofting of AutoCAD software. For example, the aperture may include one or more of a change in inclination angle, a radius of curvature of the aperture, and a range of drill pipe break angles. In addition, when the condition of the pore canal does not meet the back dragging condition of the pipeline, secondary hole cleaning and hole measuring operation can be carried out. For example, for a cross-over pipe diameter of D813mm, a single pipe break angle (break angle, which refers to the complement of the included angle between two adjacent pipes) of more than 1.0 ° and/or an accumulated value of 4 consecutive pipe break angles of more than 2.6 ° indicates the risk of back dragging. The wireless probe can transmit inclination angle parameter signals of the wireless probe in a to-be-detected interval to the ground in real time, the receiver can receive and record the signals transmitted by the wireless probe, and the hole detection interval is a part or all of the pore passages from the unearthed points to the unearthed points. That is, the data signal transmitted by the wireless probe includes at least the tilt angle parameter, and may also include other parameters (e.g., depth parameters).
Another aspect of the present invention provides a risk assessment method for back dragging of a directional drilling pipe, including the following steps: and judging the risk level of the back dragging of the pipeline according to the measurement result in the hole measuring process of the directional drilling wireless probe. When the measuring result meets the back dragging standard, the pipeline back dragging risk level is A, and the back dragging of the pipeline can be performed; otherwise, the pipeline back-dragging risk grade is B, the pipeline is not suitable for direct back-dragging, and the hole is cleaned again. Here, the determination can be made based on indices such as the drill pipe break angle, the hole-shaped radius of curvature, and the like. For example, when the hole-shaped radius of curvature in the hole-measuring section should not be less than 1200 times of the pipe diameter (referring to the outer diameter of the steel pipe for directional drilling back-dragging), or when the hole-shaped radius of curvature in the hole-measuring section is more than 1500 times of the pipe diameter, it indicates that the hole channel condition is good or better, the back-dragging risk is lower, and the pipe back-dragging can be performed. In addition, the judgment can be carried out according to indexes such as whether the maximum break angle of a single drill rod exceeds a specified range and/or whether the accumulated maximum break angle of 4 drill rods exceeds the specified range.
Yet another aspect of the present invention provides a hole gauging system comprising a drill pipe, a plurality of reamers, a directional drilling machine, a probe pod, a receiver, a surface signal zone determination unit and a data processing unit. Here, a plurality means one or more. The drill pipe, the reamers, the probe cabin and the directional drilling machine are sequentially connected in series, and the reamers are arranged at intervals. The probe cabin is additionally arranged behind the last reamer, the probe cabin is provided with a wireless probe, and the wireless probe can transmit an inclination angle parameter signal of the wireless probe in a to-be-detected interval to the ground in real time. That is, the probe pod is disposed between the reamer and the directional drilling machine. The directional drilling machine is positioned on the ground and can enable the drill rod to have the functions of drilling and pulling back. The ground signal area determination unit is configured to record a drill rod serial number of a drill rod where the probe cabin is located, and calculate the position of the drill rod corresponding to the drill rod serial number in the hole measurement interval according to the guide hole drilling record so as to determine the ground signal area. The receiving instrument is arranged in the signal area and can receive and record signals transmitted by the wireless probe. And obtaining the pore-forming condition of the pore channel in the pore-measuring interval, wherein the pore-measuring interval is a part or all of the pore channels between the unearthed point and the unearthed point. For example, the hole forming condition may be a change in the inclination angle of the hole.
Example 2
FIG. 2 illustrates an electronic map-aided survey map of an exemplary embodiment of a hole-measuring process of a directional drilling wireless probe of the present invention; FIG. 3 illustrates a process state diagram for one exemplary embodiment of a hole-gauging process for a directional drilling wireless probe of the present invention; FIG. 4 illustrates a drill pipe loft view of an exemplary embodiment of a hole gauging process of the present invention for directional drilling of a wireless probe.
In an exemplary embodiment of the invention, the crossing pipe diameter is D914mm, and the hole measuring process of the directional drilling wireless probe is used for evaluating the hole channel conditions with the numbers of 79-83 in the hole cleaning record, and the steps are as follows:
after the directional drill is subjected to the guide hole drilling and reaming construction processes in sequence, a clear directional drill curve 3 is formed in the hole, and the hole cleaning process is performed subsequently. As shown in fig. 3, this hole cleaning process employs a drilling assembly of a rock reamer 4, a drill rod, a barrel reamer 5, a drill rod and a probe cabin 6. And (3) starting the pull-back operation of the directional drilling machine 1 at the soil entry point 2, taking the rock reamer 4 as a first drill rod for hole cleaning when entering the hole, and recording the number. And then each drill rod is pulled out and is unloaded and connected to the next drill rod to be pulled back continuously, and simultaneously, each drill rod is pulled out and is simultaneously installed with another drill rod at the soil discharging point 8, and the directional drilling machine 1 circulates the process. After the barrel type reamer 5 enters a hole, a probe cabin 6 containing a wireless probe inside is additionally arranged at one end of a 16 th drill rod behind the rock reamer 4 close to a soil discharging point 8. The wireless probe can transmit the angle, depth and other data of the pore passage.
And before the directional drilling machine 1 is pulled back, the ranging calibration of the wireless probe is carried out. A tape measure with 50m measuring range is unfolded on the ground in a direction perpendicular to the direction of the probe cabin 6, then the receiver 7 is placed on a designated distance scale in a debugging mode, and the measured distance value is calibrated. The position of the receiver 7 is moved to calibrate a number of different range values, thereby making the range data more accurate.
In the pulling process of the directional drilling machine 1, the serial number in the hole cleaning record is adopted as the serial number of the drill rod, when the serial number of the drill rod where the probe cabin 6 is located is 83, the next drill rod is pulled out to the middle point of the drill rod at the soil entry point 2, the operation is suspended, and the serial number of the drill rod corresponding to the probe cabin 6 at the moment is recorded as 83. And finding the horizontal projection distance of the drill rod corresponding to the number and the horizontal projection distances of all the numbers from the number to the unearthed point 8 from the directional hole drilling record to obtain the total horizontal distance from the middle point of the drill rod where the probe cabin 6 is located to the unearthed point, namely the sum of half of the horizontal projection distance corresponding to the number 83 and the horizontal projection distance of the number between the number and the unearthed point 8, which is 214.9 m. As shown in fig. 2 and 3, the position of the drill rod where the probe cabin 6 is located is determined and found by using a mobile phone map, and the positioning marks at the upper left corner and the lower right corner respectively represent the soil entry point 2 and the soil exit point 8. Starting from the unearthed point 8, along a line segment with distance scale marks, the scales marked below the line segment are respectively 100 meters, 200 meters, 300 meters, 400 meters, 500 meters, 600 meters, 700 meters, 800 meters and 900 meters, and the scales marked above the line segment are respectively 900 meters, 800 meters, 700 meters, 600 meters, 500 meters, 400 meters, 300 meters, 200 meters and 100 meters. Wherein, regarding the mark below the line segment as the standard, a river is between 300 and 400 meters, and the places where the other line segments pass are fertile farmlands. The position where the distance from the unearthing point 8 along the straight section is 214.9m is the position of the middle point of the drill rod where the probe cabin 6 is located. Thus, the projection of a cone above the probe shaft 6 on the ground is defined as the signal zone 9. By real-time positioning of the mobile phone map, the worker places the receiver 7 right above the drill rod where the probe cabin 6 is located according to the mobile phone map so as to receive the inclination angle and depth data of the pore channel.
The directional drilling machine 1 continues to operate until the end of the drill rod at the soil entry point 2 comes out of the soil, and the operation is suspended. And finding the horizontal projection distance of the drill rod corresponding to the number 83 from the guide hole drilling record, and on the basis of the position of the middle point of the drill rod where the probe cabin 6 is located, enabling a worker to walk along the direction from the straight section to the soil entry point 2 by half of the horizontal projection distance to receive the inclination angle and depth data of the pore channel.
And after the probe cabin 6 advances for the distance of the length of the whole drill rod in the hole measuring interval, repeating the steps of recording the number, calculating the distance between the middle points of the drill rods, placing the receiver 7, calculating the distance between the end points of the drill rods and placing the receiver 7 until the drill rod with the number of 79 is measured.
The recorded data were summarized as shown in table 1 below:
TABLE 1 summary of measured data from Wireless probes
And drawing an actual lofting drawing of the drill rod by the data through AutoCAD software, as shown in FIG. 3. From the data, the accurate position of the No. 83 drill rod is 214.9m from the unearthed point to the unearthed point along the central axis under the condition that the serial number of the hole cleaning drill rod corresponds to the serial number of the position of the probe. The depth measurement is compared with the depth value at the guide hole, and the result is consistent. The change of the inclination angle is a regular linear descending representation that the smooth condition of the curve is good, as shown in figure 4, the curvature radius obtained by drawing and lofting in the CAD accords with the standard of not less than 1500 times of the passing pipe diameter, so the hole forming condition of the hole measuring interval is good. The normal range of drill pipe break angles for different cross pipe diameters is referred to herein in table 2.
TABLE 2-reference table for normal values of drill pipe break angles corresponding to different pipe diameters
According to table 2, the drill rod dog-ears are used as indexes for evaluating the pipeline back-dragging risk level, in the embodiment, the dog-ear value of each drill rod is less than 0.9 degrees, and the accumulated value of the dog-ears of 4 drill rods is less than 2.4 degrees, so that the values are all within the specified range of the specification, and then the calibration is performed by using the AutoCAD lofting curve and the depth value, and no abnormality is found. Therefore, the risk rating of the pipe back-dragging program in the hole measuring interval is a, which means that the curve completely meets the standard of pipe back-dragging.
In summary, the beneficial effects of the invention include: the hole measuring process and the hole measuring system of the directional drilling wireless probe and the risk evaluation method of the directional drilling pipeline drag back are provided, the probe cabin is additionally arranged in a hole cleaning procedure of the directional drilling to upload pore channel data to a ground receiver, and the pore channel condition after hole cleaning is obtained through data processing, so that evaluation basis is provided for the subsequent pipeline drag back risk, and the occurrence of the situations that a main pipe meets a clamp, a reamer meets sand sediment and is killed and the like can be effectively reduced.
Although the present invention has been described above in connection with the exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.
Claims (10)
1. A hole measuring process for directionally drilling a wireless probe is characterized by comprising the following steps:
a probe cabin is additionally arranged behind the last reamer of the hole cleaning procedure, and a wireless probe is configured in the probe cabin;
recording a drill rod serial number of a drill rod where the probe cabin is located, and calculating the position of the drill rod corresponding to the drill rod serial number in a hole measurement interval according to a guide hole drilling record so as to determine a ground signal area;
placing a receiver in the signal area and collecting data;
after the probe cabin advances for the length of the whole drill rod in the hole measuring interval, repeating the steps except for installing the probe cabin until the probe cabin exceeds the hole measuring interval;
processing the data to obtain the pore-forming condition of the pore channel in the pore-measuring interval;
the wireless probe can transmit an inclination angle parameter signal of the wireless probe in a to-be-detected interval to the ground in real time, the receiver can receive and record the signal transmitted by the wireless probe, and the hole measuring interval is a part or all of the pore channels from the unearthed point to the unearthed point.
2. The bore surveying process of the directional drilling wireless probe according to claim 1, wherein the drill rod serial number is one of numbers of a hole cleaning record, and the hole cleaning record takes the drill rod where the first reamer enters the tunnel in the hole cleaning procedure as the first drill rod record number of the hole cleaning.
3. The process of claim 1, wherein the signal zone is determined by: calculating the projection position of a drill rod corresponding to the probe cabin on a connecting line of the unearthed point and the unearthed point according to the drilling record of the guide hole; one defined area at the location is the signal area.
4. The bore hole logging process for directional drilling of a wireless probe according to claim 1, wherein the data collected comprises data at a midpoint and an end point near an end of an earth penetration point for each length of drill pipe completed by a hole cleaning procedure.
5. The hole-measuring process for the directional drilling of the wireless probe according to claim 1, further comprising the step of calibrating the ranging signal of the probe before cleaning the hole, wherein the step of calibrating comprises: placing the probe cabin on the ground; placing the receiver in a debugging mode at a specified distance vertical to the direction of the probe cabin; and (4) calibrating the measured distance value, and performing the steps except for placing the probe cabin on the ground more than 1 time.
6. The bore measurement process for the directional drilling of the wireless probe according to claim 1, wherein the data comprises depth parameters of the bore, and the data is processed by one or more of making a slope angle change curve of the bore, setting out a pattern of the drill rod, and table visualization.
7. The bore hole measuring process for the directional drilling wireless probe according to claim 1, wherein the hole forming conditions comprise one or more of inclination angle change, hole-shaped curvature radius and drill rod folding angle range.
8. The hole-measuring process for the directional drilling wireless probe according to claim 1, wherein the hole-measuring process further comprises the step of performing secondary hole cleaning and hole measuring operations under the condition that the hole forming condition of the pore channel does not meet the condition of back dragging of the pipeline.
9. A risk assessment method for back dragging of a directional drilling pipeline is characterized by comprising the following steps: the method for determining the risk level of the back dragging of the pipeline according to the measured result of the hole measuring process of the directional drilling wireless probe as claimed in any one of claims 1 to 8,
when the measurement result meets the back dragging standard, the pipeline back dragging risk grade is A, and the back dragging of the pipeline can be performed; otherwise, the pipeline back-dragging risk grade is B, the pipeline is not suitable for direct back-dragging, and the hole is cleaned again.
10. A hole-measuring system, comprising: a drill pipe, a plurality of reamers, a directional drilling machine, a probe cabin, a receiver and a ground signal zone determination unit, wherein,
the drill rod, the reamers, the probe cabin and the directional drilling machine are sequentially connected in series, and the reamers are arranged at intervals;
the system comprises a probe cabin, a wireless probe, a sensor and a controller, wherein the probe cabin is additionally arranged behind a last reamer and is provided with the wireless probe, and the wireless probe can transmit an inclination angle parameter signal of the wireless probe in a to-be-detected interval to the ground in real time;
the directional drilling machine is positioned on the ground and can enable the drill rod to have the functions of drilling and pulling back;
the ground signal area determination unit is configured to record a drill rod serial number of a drill rod where the probe cabin is located, and calculate the position of the drill rod corresponding to the drill rod serial number in a hole measurement interval according to a pilot hole drilling record so as to determine a ground signal area;
the receiving instrument is arranged in the signal area and can receive and record signals transmitted by the wireless probe;
and the data processing unit is used for obtaining the pore-forming condition of the pore channel in the pore-measuring interval, wherein the pore-measuring interval is a part or all of the pore channels between the unearthing point and the burying point.
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| CN202110007705.6A CN112814650B (en) | 2021-01-05 | 2021-01-05 | Hole measuring process for directional drilling of wireless probe and pipe back-dragging risk assessment method |
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