CN116084839A - Space attitude self-adaptive intelligent targeted drilling tool system under complex geological environment - Google Patents
Space attitude self-adaptive intelligent targeted drilling tool system under complex geological environment Download PDFInfo
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- CN116084839A CN116084839A CN202310376354.5A CN202310376354A CN116084839A CN 116084839 A CN116084839 A CN 116084839A CN 202310376354 A CN202310376354 A CN 202310376354A CN 116084839 A CN116084839 A CN 116084839A
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
- E21B44/005—Below-ground automatic control systems
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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
- E21B47/024—Determining slope or direction of devices in the borehole
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/10—Correction of deflected boreholes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The invention discloses a space attitude self-adaptive intelligent targeted drilling tool system in a complex geological environment, which comprises a targeted drill bit, a drilling tool main body, a measuring module and a control module; the targeting drill bit is arranged at the end part of the eccentric nipple of the drilling tool main body and can rotate; the targeting drill bit is provided with a direct-pushing drilling state and a deviation correcting state, and is coaxial with the drilling tool main body when in the direct-pushing drilling state; when in a deviation rectifying state, an included angle is formed between the main body axis of the drilling tool and the main body axis of the drilling tool; the measuring module is used for monitoring the posture of the targeting drill bit, and the control module controls and drives the targeting drill bit to rotate at a low speed in a small range. The invention is applied to the field of pollution site drilling and measuring integration, mainly provides drilling carriers and accurate detection point position control for pollution site in-situ detection equipment, greatly reduces disturbance on volatile pollutants, improves measurement accuracy by adopting a near-bit measurement mode, can automatically adjust drilling tracks, is beneficial to control of vertical drilling tracks, and has extremely high significance for pollution site investigation.
Description
Technical Field
The invention relates to the field of drilling and testing integrated technology and equipment for pollution site investigation, in particular to a space attitude self-adaptive intelligent targeting drilling tool system under a complex geological environment.
Background
With the development of cities and the migration of more chemical plants, the number of contaminated sites and the variety of contaminants are also increasing. It is estimated that after urban layout optimization, more than 20 thousands of contaminated sites can be redeveloped. The pollution site has the characteristics of concealment, irreversibility, complex pollution source, difficult treatment and the like, and how to accurately detect the types and the contents of pollutants and the distribution of the pollutants in the pollution site is the basis of the repair and the treatment of the later-stage pollution site.
The direct-pushing sampling drilling machine has small disturbance to the polluted site, so that the direct-pushing sampling drilling machine is the main equipment for in-situ investigation of the existing polluted site, but in the traditional hydraulic direct-pushing drilling sampling investigation process, the condition of an indoor experiment cannot be met due to small sampling quantity, and the problem of volatilization of substances to be detected, which are difficult to avoid, exists in the aspects of environmental temperature change, transportation storage, sample discharging treatment and the like, so that the detection result is distorted. Contaminant in situ detection equipment has therefore been developed and used in conjunction with straight-push drilling rigs to conduct investigation of contaminated sites. In addition, due to the influence of factors such as extremely complex geological conditions, extremely poor formation homogeneity and the like, drilling tracks of the drilling tool are difficult to control due to the influence of heterogeneous formation acting forces in the process of investigating a polluted site. At present, a direct-push drilling tool mainly comprises a pushing end, a cutting end, a drill stem, a pushing cap and other structures, and the structure does not comprise a drilling track monitoring system and a control device, so that monitoring of drilling parameters and control of drilling tracks cannot be performed, and the pollution site disturbance is small.
The rotary guiding system is the development direction of a modern drilling tool, is mainly applied to the petroleum field, and the drilling bit is required to rotate more in the drilling process to achieve the purpose of breaking rock, but the rotary guiding system can generate larger interference on a polluted site, so that pollutants are moved and volatilized; in addition, the drilling fluids used in the drilling process also chemically change the contaminants and are therefore not suitable for direct-to-drilling in contaminated sites.
Disclosure of Invention
Aiming at the problems that the in-situ detection equipment is insufficient in drilling precision, drilling tracks are difficult to control and detection precision is poor in the process of carrying out pollution site investigation by matching with a hydraulic direct-push drilling machine, the invention provides the space attitude self-adaptive intelligent targeting drilling tool system under a complex geological environment, which can provide a drilling carrier and accurate detection point position control for the in-situ detection equipment of the pollution site and can realize the integrated process of the in-situ investigation of the pollution site, namely, the in-situ detection equipment carried by the invention can detect pollutants when drilling to a specified depth. The intelligent self-adaptive target drilling tool system can adjust the drilling mode according to the vertex angle of the track in the drilling process, when the drilling track is deviated, the intelligent self-adaptive target drilling tool system changes the drilling tool from a direct-pushing drilling state to a deviation rectifying state through the control module so as to adjust the drilling track, after the drilling track is adjusted, the deviation rectifying state is adjusted to a direct-pushing drilling state, the direct-pushing drilling is continued, and when the track is deviated in the whole drilling process, the deviation rectifying process is repeated until the drilling track reaches a designated position. The target drilling tool system solves the problem of inaccurate investigation results caused by poor drilling track precision and difficult control in the direct pushing drilling process. Meanwhile, the drilling tool does not vibrate or rotate in the drilling process, so that the disturbance degree of the contaminated site is reduced, and a novel drilling tool is provided for the integrated in-situ detection of the contaminated site.
In order to achieve the above purpose, the invention provides a space attitude self-adaptive intelligent targeting drilling tool system under a complex geological environment, which comprises a targeting drill bit, a drilling tool main body, a measuring module and a control module;
the drilling tool main body comprises an eccentric nipple, a non-magnetic drill rod, a drive control drill rod and an in-situ detection instrument mounting drill rod which are coaxially connected in sequence from bottom to top;
the targeting drill bit is arranged at the end part of the eccentric nipple, and the targeting drill bit has a rotary stroke at the end part of the eccentric nipple;
the targeting drill bit is provided with a direct pushing drilling state and a deviation correcting state:
when the targeting drill bit is in the direct pushing drilling state, the targeting drill bit is coaxial with the drilling tool main body;
when the target drill bit is in the deviation rectifying state, the axis of the target drill bit and the axis of the drilling tool main body form an included angle;
the measuring module is arranged in the nonmagnetic drill rod and is used for monitoring the attitude parameters of the targeted drill bit;
the control module is arranged in the driving control drill rod and is in transmission connection with the targeting drill bit, so that the targeting drill bit is controlled to be driven to rotate at a low speed in a small range, and the targeting drill bit is switched between the direct pushing drilling state and the deviation correcting state;
the in-situ detection instrument is provided with an assembly structure capable of installing pollutant in-situ detection equipment.
In one embodiment, the spatial attitude adaptive intelligent targeting drilling tool system in the complex geological environment further comprises:
the on-line monitoring system is arranged on the drilling tool main body or outside the drilling tool main body and is used for displaying, storing and managing the attitude parameters of the target drill bit in real time, judging the motion state of the target drill bit and setting the driving control parameters of the control module.
In one embodiment, the intelligent target drilling tool system with adaptive spatial attitude in the complex geological environment further comprises a connecting system;
the control module is in transmission connection with the measurement module and the measurement module is in transmission connection with the targeting drill bit, so that the measurement module, the targeting drill bit and the connection system are driven by the control module to rotate in a consistent mode.
In one embodiment, the connection system comprises a coupler and a universal joint, and the measurement module comprises a drilling tool attitude sensor and a non-magnetic fixing device;
the non-magnetic fixing device is coaxially arranged in the non-magnetic drill rod, and the outer wall of the non-magnetic fixing device is in running fit with the inner wall of the non-magnetic drill rod;
the upper end of the non-magnetic fixing device is connected with the rotary output end of the control module through the coupler, and the lower end of the non-magnetic fixing device is directly connected with the targeting drill bit through the universal joint, and belongs to near-drill bit measurement;
the drilling tool attitude sensor is fixedly arranged at the middle position of the non-magnetic fixing device through a non-magnetic screw and is used for monitoring attitude parameters of the targeting drill bit.
In one embodiment, the intelligent target drilling tool system with adaptive spatial attitude in complex geological environment further comprises a target drill driving shaft;
the first end of the targeting drill bit driving shaft is fixedly connected to the top of the targeting drill bit, the second end of the targeting drill bit driving shaft penetrates through the end part of the eccentric nipple and then is connected with the universal joint, and the targeting drill bit driving shaft is in running fit with the eccentric nipple;
the length direction of the target bit driving shaft and the axis of the drilling tool main body form an included angle.
In one embodiment, the control module includes a speed reducer, a motor, and a driver;
the motor and the speed reducer are fixedly arranged in the driving control drill rod, the output end of the motor is coaxially connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the coupler;
the driver is arranged outside the drilling tool body and is respectively and electrically connected with the motor and the on-line monitoring system, so as to be used for receiving the control instruction and sending out an electric pulse signal to control the action of the motor.
In one embodiment, the top of the targeting drill bit is in contact fit with the end of the eccentric nipple, and the fit surface between the targeting drill bit and the eccentric nipple is a wedge surface.
In one embodiment, a displacement groove is formed in the end portion of the eccentric nipple, and a displacement control device configured with the displacement groove is arranged at the top of the targeting drill bit;
the displacement control device is in sliding fit with the displacement groove:
when the displacement control device slides to the starting end of the displacement groove, the targeting drill bit is in the direct-pushing drilling state;
when the displacement control device slides to the middle position of the displacement groove, the targeting drill bit is in the deviation rectifying state, and the deviation rectifying amplitude is the largest at the moment.
Compared with the prior art, the invention has the following beneficial technical effects:
1. the invention is based on the drilling and measuring integrated mode of the in-situ detection of the pollutants, the target drilling tool system can carry the in-situ detection equipment of the pollutants to drill, the in-situ detection of the pollutants is carried out after the drilling construction is completed, the process does not need to lift the drilling tool and independently lower the in-situ detection equipment, and the integrated process avoids the migration and volatilization of volatile pollutants; the track can be automatically adjusted in the drilling process, so that the problems of poor track precision and deviation of detection points caused by incapability of adjusting and controlling the drilling track in the process of directly pushing the drill in the traditional polluted site investigation are solved; in the preferred scheme, the on-line monitoring system can display, store and manage drilling parameters in real time, and send out control instructions to automatically adjust the track;
2. the drill rod of the target drilling tool system does not rotate or vibrate, and the connected target drill bit only rotates at a low speed and a small angle, so that the disturbance to a polluted site is greatly reduced, and the precision of in-situ detection equipment in pollutant detection can be improved;
3. the change of the working state of the target drilling tool system is realized by driving the connected target drill bit to rotate by a motor, and the rotation angle of the target drill bit can be adjusted so as to realize the correction process of different degrees;
4. according to the invention, in the preferred scheme, the deviation correcting components such as the biasing mechanism of the directional targeting drilling tool are replaced by the combined form of the eccentric nipple and the connected targeting drill bit, so that the length of the targeting drilling tool system is reduced, the whole drilling tool system is compact in structure and convenient to carry, and the device is suitable for the conditions of direct pushing drilling in various fields;
5. according to the invention, in the preferred scheme, the drilling tool attitude sensor is directly connected with the connected target drill bit through the universal joint, so that the consistency of the movement of the target drill bit and the sensor can be maintained, the connection mode is simplified, the distance between the measuring point and the target drill bit is shortened, the problem of large deviation of monitoring data caused by the fact that the distance between the sensor and the target drill bit is too far is solved, the drilling tool system can realize more accurate monitoring of the direct-pushing drilling parameters, and the improvement of the drilling track control precision is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a direct push drilling configuration of a targeted drilling system in accordance with an embodiment of the present invention;
FIG. 2 is a state diagram of maximum deviation correction for a targeted drilling system in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of the lower end face of an eccentric nipple of a targeted drilling system in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a lower end surface of a drive control drill stem of a targeted drilling system in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of an in situ probe installation drill pipe of a targeted drilling tool system in an embodiment of the present invention;
fig. 6 is a schematic side view of a drilling tool in a direct-push and deviation-correcting operation state of a targeted drilling tool system according to an embodiment of the present invention, wherein: (a) A schematic diagram of the target drill bit in a straight-pushing drilling state, and (b) a schematic diagram of the target drill bit in a maximum deviation correcting state.
Reference numerals: the drilling tool comprises a targeting drill bit 1, a displacement control device 101, a targeting drill bit driving shaft 102, a drilling tool main body 2, a control module 3, an eccentric nipple 4, a displacement groove 401, a wedge surface 402, a perforation 403, a universal joint 5, a drilling tool posture sensor 6, a non-magnetic fixing device 7, a non-magnetic screw 701, a non-magnetic drill rod 8, a coupling 9, a driving control drill rod 10, a fixing hole 110, a line position hole 120, an end plate perforation 130, a speed reducer 11, a motor 12, an in-situ detection instrument mounting drill rod 13, an in-situ detection window 14 and a driver 15.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
Fig. 1 and fig. 2 show a spatial attitude adaptive intelligent targeting drilling tool system (hereinafter referred to as a drilling tool system) in a complex geological environment suitable for integrated drilling and measurement of a contaminated site, which is disclosed in the present embodiment, and includes six parts including a targeting drill bit 1, a drilling tool main body 2, a measurement module, a control module 3, a connection system and an on-line monitoring system. The targeting drill bit 1 is arranged at the drilling end of the drilling tool main body 2, the targeting drill bit 1 is a weak disturbance targeting drill bit, and the targeting drill bit 1 has a rotary stroke at the drilling end of the drilling tool main body 2, and specifically:
the taper of the targeting drill bit 1 is 0.65;
the targeting drill bit 1 has a direct push drilling state and a deviation correcting state:
when the targeting drill bit 1 is in a direct-pushing drilling state, the targeting drill bit 1 is coaxial with the drilling tool main body 2;
when the targeting drill bit 1 is in a deviation correcting state, the axis of the targeting drill bit 1 and the axis of the drilling tool main body 2 form an included angle;
the control module 3 is in transmission connection with the targeting drill bit 1, so as to control and drive the targeting drill bit 1 to rotate at a low speed in a small range, and realize the switching of the targeting drill bit 1 between a direct-pushing drilling state and a deviation correcting state. The measuring module is used for monitoring attitude parameters of the targeting drill bit 1, including attitude parameters such as the vertex angle, azimuth angle and toolface angle of the targeting drill bit 1. The on-line monitoring system is used for displaying, storing and managing the attitude parameters of the targeted drill bit 1 in real time, judging the motion state of the targeted drill bit 1, and setting the driving control parameters (including the action parameters such as the rotating speed, the rotating angle and the rotating acceleration of the motor 12) of the control module 3. Meanwhile, the on-line monitoring system can also set a threshold value of the vertex angle, so that real-time comparison of the monitoring vertex angle and the threshold value can be further carried out, and the motion state of the targeting drill bit 1 can be judged.
The drilling tool system in the embodiment is mainly applied to investigation work of volatile pollutants, and is matched with a pollutant in-situ detection device to realize the integrated in-situ detection work of the volatile pollutants. The drilling tool system can judge the drilling state according to the relation between the drilling top angle and the threshold value and adjust the drilling mode, when the drilling track is deviated (namely when the top angle of the real-time monitored target drill bit exceeds the threshold value), the drilling tool system drives the connected target drill bit 1 to rotate at a low speed in a small range through the rotation of the motor 12, the drilling tool is converted into a deviation correcting state from a direct-pushing drilling state so as to adjust the drilling track, and after the drilling track is adjusted, the motor 12 rotates in the opposite direction and at the same angle so as to adjust the drilling tool system from the deviation correcting state to the direct-pushing drilling state, and the direct-pushing drilling is continued; and repeating the correction process until the drilling reaches the designated position when the track is deflected in the whole drilling process. By adjusting the drilling track in real time, the problems of poor drilling track precision and difficult control in the process of investigating a polluted site under complex geological conditions are avoided, and the problem of inaccurate detection result caused by position deviation in the process of investigating the polluted site is solved. Meanwhile, the drilling tool system does not vibrate and rotate during the drilling process, so that the disturbance degree of the drilling tool system to a polluted site is reduced, and a novel drilling tool system is provided for integrated in-situ detection of the polluted site.
In this embodiment, the drill body 2 includes an eccentric nipple 4, a non-magnetic drill rod 8, a drive control drill rod 10 and an in-situ probe mounting drill rod 13 which are coaxially connected in this order from bottom to top.
The targeting drill bit 1 is arranged at the end part of the eccentric nipple 4, and the targeting drill bit 1 has a rotary stroke at the end part of the eccentric nipple 4. Specifically, the top of the targeting drill bit 1 is in contact fit with the end of the eccentric nipple 4, the fit surface is a wedge surface 402, and the angle of the wedge surface 402 is 10 °. The top of the targeting drill bit 1 is provided with a displacement control device 101 and a targeting drill bit driving shaft 102, the included angle between the targeting drill bit driving shaft 102 and the axis of the drilling tool main body 2 is 10 degrees, the end part of the eccentric nipple 4 is provided with a displacement groove 401 configured with the displacement control device 101, and the end part of the eccentric nipple 4 is also provided with a perforation 403 capable of penetrating through the targeting drill bit driving shaft 102. During assembly, the top of the targeting drill bit 1 is in wedge fit with the end part of the eccentric nipple 4, the displacement control device 101 is embedded into the displacement groove 401, and the targeting drill bit driving shaft 102 passes through the perforation 403 and then is positioned in the eccentric nipple 4. During drilling, the control module 3 drives the targeting drill driving shaft 102 to rotate, and then drives the targeting drill 1 to rotate, and at the moment, the displacement control device 101 slides along the displacement groove 401. The length direction of the targeting drill bit driving shaft 102 and the axis of the drill tool body 2 have a first included angle, that is, the targeting drill bit driving shaft 102 of the connected targeting drill bit 1 is always inclined in the drill tool system, meanwhile, the length direction of the targeting drill bit driving shaft 102 and the axis of the targeting drill bit 1 also have a second included angle, and the first included angle is the same as the second included angle, so that the targeting drill bit driving shaft 102 can rotate to a position (i.e., a straight-pushing drilling state) where the targeting drill bit 1 and the drill tool body 2 are coaxial, and can also rotate to a position (i.e., a deviation rectifying state) where the axis of the targeting drill bit 1 and the axis of the drill tool body 2 have an included angle.
Referring to fig. 3, the displacement groove 401 in the present embodiment is an arc-shaped groove of 360 °. The displacement slots 401 may control the range of motion of the attached targeted drill bit 1 to swing at low speed over a small range to reduce disturbance to the formation. When the displacement control device 101 slides to the starting end of the displacement groove 401, the targeting drill bit 1 is in a straight pushing drilling state; when the displacement control device 101 slides to the middle position of the displacement groove 401, the targeting drill bit 1 is in a deviation rectifying state, and the deviation rectifying amplitude is maximum at the moment. When the displacement control device 101 slides to the non-initial position of the displacement groove 401, the targeting drill bit 1 is in a deviation rectifying state, and the deviation rectifying amplitude is only changed. The deviation rectifying amplitude of the targeting drill bit 1 and the position of the displacement control device 101 in the displacement groove 401 can be obtained through calibration.
In this embodiment, the tool system keeps the toolface consistent with the a-end (start end) of the displacement slot 401 prior to drilling, and the on-line monitoring system records the initial toolface angle α. When the drilling track is deflected, the drilling tool attitude sensor 6 senses the azimuth angle beta and transmits the azimuth angle beta to the online monitoring system, the online monitoring system calculates a deviation correcting rotation angle psi according to the initial tool face angle alpha and the azimuth angle beta, a calculation formula is psi=alpha-beta, and the adjustment angle of the targeting drill bit 1 is theta= |psi. According to the adjustment angle theta, a pulse signal is sent out to control the motor 12 to rotate, if the angle phi is more than 0 degrees and less than 90 degrees, the motor 12 drives the targeting drill bit 1 to rotate clockwise (180-theta) degrees; if minus 180 degrees is less than phi and less than 0 degrees, the motor 12 drives the targeting drill bit 1 to rotate clockwise by (180+theta) degrees; if minus 270 DEG is less than phi and minus 180 DEG, the motor 12 drives the targeting drill bit 1 to rotate clockwise (theta-180 DEG). The initial tool face angle alpha and the azimuth angle beta take the north direction line as the starting edge.
In this embodiment, the eccentric nipple 4, the nonmagnetic drill rod 8, the driving control drill rod 10 and the in-situ detecting instrument mounting drill rod 13 are hollow tubular structures. The upper end of the eccentric nipple 4 is connected with the lower end of the nonmagnetic drill rod 8 in a threaded connection mode. The upper end of the non-magnetic drill rod 8 is connected with the lower end of the driving control drill rod 10 in an inserting mode, and a step closing-in structure is arranged at the lower end of the driving control drill rod 10, so that the outer diameter of the lower end of the driving control drill rod 10 is smaller than the inner diameter of the non-magnetic drill rod 8, and the lower end of the driving control drill rod 10 can be inserted into the upper end of the non-magnetic drill rod 8. Meanwhile, the side part of the upper end of the nonmagnetic drill rod 8 and the side part of the lower end of the drive control drill rod 10 are provided with matched counter bores, and the nonmagnetic drill rod 8 and the drive control drill rod 10 are fixed through the cooperation of counter bore screws and counter bores. The upper end of the driving control drill rod 10 and the lower end of the in-situ detecting instrument mounting drill rod 13 can be fixed in a threaded connection, a plug-in connection or a buckle connection mode. It should be noted that the connection of the eccentric nipple 4, the non-magnetic drill rod 8, the drive control drill rod 10 and the in-situ probe installation drill rod 13 is not limited to the threaded connection, the plugging connection, the snap connection or the welding.
Referring to fig. 4, the lower end of the driving control drill rod 10 is provided with an end plate on which a fixing hole 110 is provided to be matched with a screw hole of the speed reducer 11, and a wire hole 120 and an end plate penetration hole 130 are separately provided. In the present embodiment, the control module 3 includes a speed reducer 11, a motor 12, and a driver 15. The motor 12 is a stepping motor, the speed reducer 11 is connected to an end plate at the lower end of the driving control drill rod 10 through a screw, the speed reducer 11 is connected with the motor 12 through a screw, the output end of the motor 12 is coaxially connected with the input end of the speed reducer 11, and the output end of the speed reducer 11 passes through the end plate through hole 130 and then is positioned in the nonmagnetic drill rod 8. The driver 15 is fixed outside the drilling system, and the driver 15 is communicated with the motor 12 and the computer on-line monitoring system through a cable, namely, receives a control command of the on-line monitoring system and sends out an electric pulse signal to control the action of the motor 12.
Referring to fig. 5, an in-situ probe window 14 is provided on the in-situ probe tool mounting drill pipe 13. Meanwhile, the in-situ detecting instrument is provided with pollutant in-situ detecting equipment such as a heating device and/or information acquisition and/or transmission equipment and the like inside the drill rod 13.
In this embodiment, the connection system comprises a coupling 9 and a universal joint 5. The measuring module comprises a drill tool attitude sensor 6 and a non-magnetic fixing device 7 which are arranged in a non-magnetic drill rod 8. The drilling tool attitude sensor 6 can be a miniature quantitative sensor, wherein the miniature quantitative sensor comprises a fluxgate sensor and an acceleration sensor, and attitude parameters such as a drilling tool top angle, an azimuth angle and a tool face angle are monitored through magnetic field intensity and acceleration. The non-magnetic fixing device 7 and the non-magnetic drill rod 8 are made of non-magnetic materials with certain strength, the non-magnetic materials do not influence the distribution of magnetic field space, the influence on the measurement of the magnetic field intensity of the miniature quantitative sensor can be avoided, and the monitoring precision is improved. The nonmagnetic fixing device 7 is coaxial with the nonmagnetic drill rod 8 in the nonmagnetic drill rod 8, and the outer wall of the nonmagnetic fixing device 7 is connected with the inner wall of the nonmagnetic drill rod 8 in a smooth manner, so that the nonmagnetic fixing device 7 and the nonmagnetic drill rod 8 can rotate relatively. The upper end and the lower end of the nonmagnetic fixing device 7 are provided with key grooves with the same size, specifically, the lower end of the nonmagnetic fixing device 7 is connected with a targeted drill bit driving shaft 102 in the eccentric nipple 4 through a universal joint 5, and the upper end of the nonmagnetic fixing device 7 is connected with an output shaft of a speed reducer 11 through a coupler 9. The drilling tool posture sensor 6 is fixed in the middle of the nonmagnetic fixing device 7 through the nonmagnetic screw 701, the drilling tool posture sensor 6 keeps the consistency of the movement with the targeting drill bit 1 connected with the nonmagnetic fixing device 7 and the eccentric nipple 4, the measuring point of the drilling tool posture sensor 6 is close to the distance of the targeting drill bit 1, and the drilling tool posture sensor belongs to near-drill bit measurement.
In this embodiment, the outer diameters of the drill body 2 and the connected targeting drill bit 1 are the same, so as to avoid the gap between the drill rod and the stratum, and further reduce the conditions of volatile pollutant migration and volatilization.
The working principle and effect of the drilling tool system in this embodiment are:
1. on the premise of connecting the targeting drill bit 1 shown in fig. 6, the straight pushing and deviation correcting working states of the drilling tool system are shown in fig. 1 and 2. When the drilling system directly pushes the drill, the connected targeting drill bit 1 rotates to the end A (starting end) of the displacement groove 401, and at this time, the axis of the targeting drill bit 1 and the axis of the drilling tool body 2 are on the same straight line, so that the direct pushing drilling state is maintained. When the drilling tool system is in the maximum deviation correcting state, the connected targeting drill bit 1 rotates to the end B of the displacement groove 401 (the middle position of the displacement groove 401), and at the moment, the axis of the targeting drill bit 1 and the axis of the drilling tool main body 2 are not in the same straight line;
2. the eccentric nipple 4 of the drilling tool system and the connected targeting drill bit driving shaft 102 are matched for use, so that the length of the biasing mechanism is reduced, the whole drilling tool system is compact in structure and convenient to carry, and the drilling tool system is suitable for the conditions of direct pushing drilling in various fields;
3. in the deviation correcting state and the direct-pushing drilling state, the drill rod and the connected targeting drill bit 1 are kept relatively static, rotation and vibration do not occur, and only the drill bit rotates in a small range and at a low speed in the drilling state switching process;
4. when the motor 12 receives a pulse instruction sent by the driver 15, the output shaft of the motor 12 rotates positively, the output shaft of the speed reducer 11 drives the nonmagnetic fixing device 7 and the connected targeting drill bit 1 to rotate positively at the same time, the axis of the targeting drill bit 1 deviates from the axis of the drilling tool main body 2, the drilling tool system enters a deviation correcting state, the maximum rotation angle of the targeting drill bit 1 connected in the embodiment is 360 degrees, as shown in fig. 2, and the drilling tool system is in the maximum deviation correcting state under the condition of connecting the targeting drill bit 1 as shown in the figure;
5. the reduction ratio of the speed reducer 11 is 100:1, namely the rotation speed of the output shaft of the motor 12 is reduced by 100 times by the speed reducer 11, so that the stability of the control module 3 can be improved, and the output torque of the motor 12 can be increased;
6. drilling tool system provides carrier and accurate detection point position control for contaminated site normal position detection equipment, with normal position detection instrument installation drilling rod 13 accurate transportation to appointed detection degree of depth, normal position detection instrument installation drilling rod 13 is at drilling tool system's top, on drilling tool system's work basis, if use selective semi-permeable membrane to carry out volatile pollutant's detection, then the volatile pollutant detection process of site position can be realized to the site position of normal position detection window 14 installation selective semi-permeable membrane and assist heating equipment, volatile pollutant transmission channel to carry out the pollutant detection of site position.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
1. The intelligent target drilling tool system with the self-adaptive spatial attitude in the complex geological environment is characterized by comprising a target drill bit, a drilling tool main body, a measuring module and a control module;
the drilling tool main body comprises an eccentric nipple, a non-magnetic drill rod, a drive control drill rod and an in-situ detection instrument mounting drill rod which are coaxially connected in sequence from bottom to top;
the targeting drill bit is arranged at the end part of the eccentric nipple, and the targeting drill bit has a rotary stroke at the end part of the eccentric nipple;
the targeting drill bit is provided with a direct pushing drilling state and a deviation correcting state:
when the targeting drill bit is in the direct pushing drilling state, the targeting drill bit is coaxial with the drilling tool main body;
when the target drill bit is in the deviation rectifying state, the axis of the target drill bit and the axis of the drilling tool main body form an included angle;
the measuring module is arranged in the nonmagnetic drill rod and is used for monitoring the attitude parameters of the targeted drill bit;
the control module is arranged in the driving control drill rod and is in transmission connection with the targeting drill bit, so that the targeting drill bit is controlled to be driven to rotate at a low speed in a small range, and the targeting drill bit is switched between the direct pushing drilling state and the deviation correcting state;
the in-situ detection instrument is provided with an assembly structure capable of installing pollutant in-situ detection equipment.
2. The intelligent targeted drilling system with adaptive spatial pose in complex geological environment according to claim 1, further comprising:
the on-line monitoring system is arranged on the drilling tool main body or outside the drilling tool main body and is used for displaying, storing and managing the attitude parameters of the target drill bit in real time, judging the motion state of the target drill bit and setting the driving control parameters of the control module.
3. The intelligent targeted drilling system with adaptive spatial attitude in a complex geological environment according to claim 2, further comprising a connection system, wherein the measurement module, the targeted drill bit and the connection system are driven by the control module to rotate in a consistent manner.
4. The intelligent target drilling tool system with self-adaptive spatial attitude in complex geological environment according to claim 3, wherein the connecting system comprises a coupler and a universal joint, and the measuring module comprises a drilling tool attitude sensor and a non-magnetic fixing device;
the non-magnetic fixing device is coaxially arranged in the non-magnetic drill rod, and the outer wall of the non-magnetic fixing device is in running fit with the inner wall of the non-magnetic drill rod;
the upper end of the non-magnetic fixing device is connected with the rotary output end of the control module through the coupler, and the lower end of the non-magnetic fixing device is directly connected with the targeting drill bit through the universal joint, and belongs to near-drill bit measurement;
the drilling tool attitude sensor is fixedly arranged at the middle position of the non-magnetic fixing device through a non-magnetic screw and is used for monitoring attitude parameters of the targeting drill bit.
5. The intelligent targeted drilling system with adaptive spatial pose in complex geological environment according to claim 4, further comprising a targeted drill drive shaft;
the first end of the targeting drill bit driving shaft is fixedly connected to the top of the targeting drill bit, the second end of the targeting drill bit driving shaft penetrates through the end part of the eccentric nipple and then is connected with the universal joint, and the targeting drill bit driving shaft is in running fit with the eccentric nipple;
the length direction of the target bit driving shaft and the axis of the drilling tool main body form an included angle.
6. The intelligent targeted drilling tool system with adaptive spatial attitude in complex geological environment according to claim 4 or 5, wherein the control module comprises a speed reducer, a motor and a driver;
the motor and the speed reducer are fixedly arranged in the driving control drill rod, the output end of the motor is coaxially connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the coupler;
the driver is arranged outside the drilling tool body and is respectively and electrically connected with the motor and the on-line monitoring system, so as to be used for receiving the control instruction and sending out an electric pulse signal to control the action of the motor.
7. The intelligent targeted drilling system with adaptive spatial attitude in a complex geological environment according to any one of claims 1 to 5, wherein the top of the targeted drill bit is in contact fit with the end of the eccentric nipple, and the mating surface between the targeted drill bit and the eccentric nipple is a wedge-shaped surface.
8. The intelligent target drilling tool system with self-adaptive spatial attitude in a complex geological environment according to any one of claims 1 to 5, wherein a displacement groove is arranged at the end part of the eccentric nipple, and a displacement control device configured with the displacement groove is arranged at the top part of the target drill bit;
the displacement control device is in sliding fit with the displacement groove:
when the displacement control device slides to the starting end of the displacement groove, the targeting drill bit is in the direct-pushing drilling state;
when the displacement control device slides to the middle position of the displacement groove, the targeting drill bit is in the deviation rectifying state, and the deviation rectifying amplitude is the largest at the moment.
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