CN112832752A - Downhole power drilling tool with downhole monitoring signal transmitting function - Google Patents
Downhole power drilling tool with downhole monitoring signal transmitting function Download PDFInfo
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- CN112832752A CN112832752A CN202011285505.9A CN202011285505A CN112832752A CN 112832752 A CN112832752 A CN 112832752A CN 202011285505 A CN202011285505 A CN 202011285505A CN 112832752 A CN112832752 A CN 112832752A
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Classifications
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
Abstract
The utility model relates to a power drilling tool in pit with monitoring signal emission function in pit belongs to power drilling tool technical field in the pit, includes: the power drilling tool comprises shells which are sequentially screwed along the axial direction of the power drilling tool, wherein a plurality of grooves are formed in the outer wall of any shell, and each groove is an elongated groove formed along the axial direction of each shell; the wireless transmission unit comprises a signal control circuit board, a magnetic bar coil antenna and a battery pack which are electrically connected with each other, the signal control circuit board, the magnetic bar coil antenna and the battery pack are respectively fixed in the grooves, and cover plates for sealing the grooves are arranged on the notches of the grooves. The long-shaped groove is formed in the outer wall of the shell, the influence of the circumferential annular groove on the structural strength of the shell is avoided when the annular coil is used, the probability of shell breakage is greatly reduced, and the service life of the underground power drilling tool is prolonged.
Description
Technical Field
The application relates to the technical field of underground power drilling tools, in particular to an underground power drilling tool with an underground monitoring signal transmitting function.
Background
In oil and gas exploitation, downhole power drilling tools are increasingly widely used, the downhole power drilling tools drive drill bits to achieve stratum drilling, the downhole power drilling tools are driven by drilling fluid pumped in through ground equipment, and during operation, the drilling fluid is pumped into the downhole power drilling tools, and the power drilling tools convert hydraulic energy into kinetic energy to drive downhole drill bits to rotate. There are two common types of power drills: screw drills and turbine drills.
For a screw drilling tool, drilling fluid enters a stator shell to drive a rotor screw eccentric to the stator shell to rotate, and the rotor screw drives a universal shaft and a transmission shaft connected with the rotor screw to rotate, so that a drill bit at the lower end of the drilling tool is driven to rotate. The turbine drilling tool adopts one-stage or multi-stage turbine sections to provide torque for a drill bit at the lower end of the drilling tool, each stage is composed of a stator which does not move and a rotor which rotates, the rotor is connected with a shaft, drilling fluid is guided into the rotor by the stator, and rotor blades rotate under the action of the drilling fluid to provide torque for the drill bit at the lower end of the drilling tool.
The underground power drilling tool can meet various working conditions under the well, and the effects of counter torque impact between screw threads, bending of cyclic stress effect, other working conditions and the like can be formed under the action of certain working condition factors. Repeated counter torque impact easily causes the reduction of the screw thread fastening force between the shells, and loosening and tripping occur; the long term cyclic bending stress effects can lead to fatigue cracking and even fracture of the casing, all of which can lead to serious drilling accidents.
The prevention of the shell fracture and the tripping at home and abroad is mainly controlled from the aspects of processing technology and structure improvement, use time setting and the like, but the occurrence of the tripping fault cannot be effectively prevented. And through the judgment of the abnormal parameters such as pump pressure, bit pressure, torque, rotating speed and the like, the problems of tripping, breaking and gear wheel well falling about to occur cannot be predicted only if tripping and breaking occur.
At present, some domestic and foreign enterprises can reflect the drilling faults of drilling tools to different degrees by adopting technical means such as an underground fault monitoring system and the like, so that the accuracy of judging the faults of the drilling tool is greatly improved, but the positions which are easy to cause major accidents such as tripping, breakage and the like are generally arranged at the middle upper part of a screw rod and are far away from a monitoring instrument, so that the monitoring mode which has the characteristics of emergencies and no prediction on the specific drilling tool failure phenomenon is not good all the time, and related documents do not find related solutions. The problems that the accident point is far away from a monitoring instrument, the underground working condition is severe, the signal attenuation is serious, and the monitoring instrument far away from the accident point cannot effectively obtain signals need to be solved by a new monitoring mode.
The prediction purpose can be achieved by adopting a close-range accurate monitoring mode for the frequently-occurring severe accident positions, but the acquisition of signals needs to be completed by a proper uploading method. Wired transmission is difficult to realize under the condition of deep well drilling rotating at high speed, the purpose of transmission is generally achieved by adopting wireless medium and long transmission, and the wireless medium and long transmission is easily interfered by underground conditions and requires strong transmission capability. In the related art, the loop coil is used as a transmitting antenna for wireless communication, but the loop coil needs to be installed on a special short section in an open loop groove, so that the strength of the groove is reduced, and the installation is troublesome.
Accurate monitoring requires uploading and feeding back signals detected near a fault point, but because the distance from a monitoring instrument is far, electric signals cannot be transmitted, and how to upload acquired signals becomes a key point of accurate monitoring. To transmit these signals to the ground analysis and alarm system, a complete system for information transmission needs to be established independently, and the wireless short transmission becomes an important component of the system.
Disclosure of Invention
The embodiment of the application provides a power drilling tool in pit with monitoring signal emission function in pit to the annular coil need open the installation of annular groove on special nipple joint among the solution correlation technique, reduces the problem of the intensity of fluting department.
The embodiment of the application provides a downhole motor with monitoring signal emission function in pit, includes:
the power drilling tool comprises shells which are sequentially screwed along the axial direction of the power drilling tool, wherein a plurality of grooves are formed in the outer wall of any one of the shells, and each groove is an elongated groove formed in the axial direction of the shell;
the wireless transmission unit comprises a signal control circuit board, a magnetic bar coil antenna and a battery pack which are electrically connected with each other, the signal control circuit board, the magnetic bar coil antenna and the battery pack are respectively fixed in the grooves, and cover plates for sealing the grooves are arranged on the notches of the grooves.
In some embodiments: the plurality of grooves are uniformly distributed and arranged along the circumferential direction of the shell, the signal control circuit board, the magnetic bar coil antenna and the battery pack are connected through cables, and a threading hole penetrating the cable is formed between every two adjacent grooves.
In some embodiments: the cover plate is fixedly connected with the shell through screws, a sealing ring, a sealing gasket or a sealant is arranged between the cover plate and the groove, and the cover plate is made of nonmagnetic hard material.
In some embodiments: the monitoring unit comprises an on-off ring and a conductor assembly, wherein the on-off ring and the conductor assembly are positioned between two adjacent shells, when the two adjacent shells rotate relatively, the on-off ring and the conductor assembly are connected or disconnected, and the on-off ring and the conductor assembly are electrically connected with the signal control circuit board.
In some embodiments: the on-off ring is located two adjacent on the terminal surface of one of them casing in the casing, one of them seted up on the terminal surface of casing and held the annular groove of on-off ring, on-off ring is located in the annular groove, and the coating has the insulating cement with on-off ring insulation in the annular groove.
In some embodiments: the on-off ring comprises a metal conducting ring, a plurality of grooves are formed in the inner ring or the outer ring of the metal conducting ring at intervals along the circumferential direction of the metal conducting ring, and arc-shaped blocks made of insulating materials are embedded in the grooves.
In some embodiments: the conductor assembly is positioned on the end face of the other of the two adjacent shells, the end face of the other shell is provided with a mounting hole for accommodating the conductor assembly, and the conductor assembly is positioned in the mounting hole and is abutted against the on-off ring.
In some embodiments: the conductor assembly comprises an insulating tube and a conductor pressure head positioned in the insulating tube, a metal spring for pushing the conductor pressure head to move towards the on-off ring is further arranged in the insulating tube, and a lead is connected to the conductor pressure head and/or the metal spring.
In some embodiments: the one end of insulating tube is equipped with the control the spacing step of conductor pressure head displacement range, the other end of insulating tube is equipped with insulating gland, set up on the insulating gland and penetrate the through wires hole of wire, the top of conductor pressure head is the calotte.
In some embodiments: the casing includes follows bypass valve casing, the anti-falling casing, stator casing, universal shaft casing and the transmission shaft casing that power drilling tool's axis direction screw thread connects in proper order, the both ends of anti-falling casing, stator casing and universal shaft casing are equipped with respectively break-make ring or conductor assembly, the bottom of bypass valve casing and the top of transmission shaft casing are equipped with break-make ring or conductor assembly.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides an underground power drilling tool with an underground monitoring signal transmitting function, and the underground power drilling tool is provided with the power drilling tool and a wireless transmission unit, wherein the power drilling tool comprises shells which are sequentially screwed and connected along the axial direction of the power drilling tool, a plurality of grooves are formed in the outer wall of any shell, and the grooves are long grooves formed in the axial direction of the shells; the wireless transmission unit comprises a signal control circuit board, a magnetic bar coil antenna and a battery pack which are electrically connected with each other, the signal control circuit board, the magnetic bar coil antenna and the battery pack are respectively fixed in the groove, and a cover plate for sealing the groove is arranged on the notch of the groove.
Therefore, this application sets up wireless transmission unit on power drilling tool's casing, and wireless transmission unit is closer apart from power drilling tool's fault point, and wireless transmission unit acquires behind the signal of fault point with signal wireless transmission to the not far away and with the receiving nipple joint that MWD links to each other, uploads the signal to ground through MWD and accomplishes wireless signal and upload the function. Simultaneously this application has seted up a plurality of recesses on the outer wall of casing, and the recess is the long-pending groove of seting up for the axis direction along the casing, and wireless transmission unit's bar magnet coil antenna is located the recess and carries out wireless communication transmission. The long-shaped groove is formed in the outer wall of the shell, so that the influence of the circumferential annular groove needing to be formed in the annular coil on the structural strength of the shell is avoided, the probability of shell breakage is greatly reduced, and the service life of the underground power drilling tool is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is an enlarged view of a portion of FIG. 1 at B;
FIG. 5 is a schematic structural diagram of an embodiment of the present disclosure;
FIG. 6 is a front view of the structure of the on-off ring of the embodiment of the present application;
FIG. 7 is a structural half-sectional view of an on-off ring of an embodiment of the present application;
fig. 8 is an exploded view of the structure of a conductor assembly according to an embodiment of the present application.
Reference numerals:
1. a power drill; 11. a bypass valve housing; 12. the shell is prevented from falling; 13. a stator housing; 14. a cardan shaft housing;
2. a monitoring unit; 21. a break-make ring; 22. a conductor assembly; 211. a metal conducting ring; 212. an arc-shaped block; 221. an insulating tube; 222. a conductor crimp; 223. a metal spring; 224. an insulating gland; 225. a wire;
3. a wireless transmission unit; 31. a magnetic rod coil antenna; 32. a battery pack; 33. a signal control circuit board; 34. a cover plate; 35. an electrical cable.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a downhole power drilling tool with downhole monitoring signal transmitting function, which can solve the problem that in the related art, an annular coil needs to be installed on a special short section in an open annular groove, and the strength of the groove is reduced.
Referring to fig. 1 and 2, an embodiment of the present application provides a downhole motor with a downhole monitoring signal transmitting function, including:
the power drilling tool 1 comprises shells which are sequentially screwed along the axis direction of the power drilling tool 1, the shells are of hollow pipe body structures, and two adjacent shells are connected through external threads and internal threads. The power drill 1 of the present application may be a screw drill or a turbine drill, and the present embodiment is described in detail by taking a screw drill as an example.
The housing of the present embodiment includes a bypass valve housing 11, a drop-proof housing 12, a stator housing 13, a universal shaft housing 14, and a transmission shaft housing (not shown) which are screwed (threaded) in this order. The outer wall of any one of the shells is provided with three grooves, and the grooves are long grooves arranged along the axis direction of the shell. The length of the long-shaped groove is less than 50mm, the width and the depth of the long-shaped groove are less than 35mm, the size of the long-shaped groove is reduced as much as possible, and the structural strength of the shell is not affected.
The wireless transmission unit 3, this wireless transmission unit 3 includes mutual electric connection's signal control circuit board 33, bar magnet coil antenna 31 and group battery 32, and signal control circuit board 33, bar magnet coil antenna 31 and group battery 32 are fixed respectively in three recesses, and the notch of recess is equipped with the apron 34 of closed recess.
The battery pack 32 is used for respectively supplying power to the signal control circuit board 33 and the magnetic rod coil antenna 31, the input end of the signal control circuit board 33 is connected with the monitoring unit 2, the output end of the signal control circuit board 33 is connected with the input end of the magnetic rod coil antenna 31, the magnetic rod coil antenna 31 wirelessly transmits signals to a receiving short joint which is not far away and is connected with the MWD, and the signals are uploaded to the ground through the MWD to complete a wireless signal uploading function.
The magnetic rod coil antenna 31 of the wireless transmission unit 3 is a transmitting antenna, the receiving short section is provided with a receiving antenna with the same structure as the magnetic rod coil antenna 31, and the magnetic rod coil antenna 31 of the wireless transmission unit 3 and the receiving antenna on the receiving short section are in wireless communication by electromagnetic wave signals.
This application sets up wireless transmission unit 3 on the casing of power drilling tool 1, and wireless transmission unit 3 is closer apart from the fault point of power drilling tool 1, and wireless transmission unit 3 acquires behind the signal of fault point with signal wireless transmission to the not far away and with MWD (measurement While drilling) the receipt nipple joint that links to each other, upload to ground through MWD with the signal and accomplish the wireless signal and upload the function.
Simultaneously this application has seted up a plurality of recesses on the outer wall of casing, and the recess is the elongated groove of seting up for the axis direction along the casing, and wireless transmission unit 3's bar magnet coil antenna 31 is located the recess and carries out wireless communication transmission. The long-shaped groove is formed in the outer wall of the shell, so that the influence of the circumferential annular groove which needs to be formed in the annular coil on the structural strength of the shell is avoided, the probability of shell breakage is greatly reduced, and the service life of the underground power drilling tool is prolonged.
In some alternative embodiments: referring to fig. 2, the embodiment of the present application provides a downhole power drill with a downhole monitoring signal transmitting function, three grooves of the downhole power drill are uniformly arranged along the circumferential direction of a housing, a signal control circuit board 33, a magnetic rod coil antenna 31 and a battery pack 32 are connected by a cable 35, and a threading hole for threading the cable 35 is formed between two adjacent grooves.
The three grooves are uniformly distributed and arranged along the circumferential direction of the shell, the shortest distance between the three grooves is ensured on the premise of ensuring the structural strength of the shell, and the processing difficulty of the threading holes between two adjacent grooves is reduced. The threading hole between two adjacent grooves is composed of two sections of long straight holes forming a set included angle.
The cover plate 34 is fixedly connected with the shell through screws, a sealing ring, a sealing gasket or a sealant is arranged between the cover plate 34 and the groove, and the sealing ring, the sealing gasket or the sealant is used for enhancing the sealing performance between the cover plate 34 and the groove and preventing drilling fluid from permeating into the groove to soak or corrode the signal control circuit board 33, the magnetic rod coil antenna 31 and the battery pack 32.
The cover plate 34 of the closed magnetic rod coil antenna 31 in the embodiment of the application is made of non-magnetic and non-shielding materials and has strong wear resistance, and the cover plate 34 is prevented from shielding signals of the magnetic rod coil antenna 31. The cover plate 34 is made of a material such as tempered glass, hard wear-resistant plastic or a non-magnetic tungsten steel material. The cover plate 34 enclosing the signal control circuit board 33 and the battery pack 32 may be made of a wear-resistant material, such as a hard alloy steel material.
In some alternative embodiments: referring to fig. 1, 3 and 4, the embodiment of the present application provides a downhole motor with a downhole monitoring signal transmitting function, the downhole motor further includes a monitoring unit 2, the monitoring unit 2 includes an on-off ring 21 and a conductor assembly 22 located between two adjacent housings, when the two adjacent housings rotate relatively, the on-off ring 21 and the conductor assembly 22 are connected or disconnected, and both the on-off ring 21 and the conductor assembly 22 are electrically connected to a signal control circuit board 33. When two adjacent shells rotate relatively, the on-off ring 21 and the conductor assembly 22 are triggered to be connected or disconnected, and the signal control circuit board 33 can directly judge and predict whether the screw thread of the shell is loosened or released through the on-off signal of the on-off ring 21 and the conductor assembly 22.
In some alternative embodiments: referring to fig. 3 to 5, the embodiment of the present application provides a downhole motor with a downhole monitoring signal transmitting function, wherein the on-off ring 21 of the downhole motor is located on the end face of one of two adjacent housings, and the conductor assembly 22 is located on the end face of the other of the two adjacent housings. The present embodiment will be described by taking as an example the bypass valve housing 11 and the drop-proof housing 12 which are screwed together.
An annular groove for accommodating the on-off ring 21 is formed in the bottom end face of the bypass valve housing 11 (i.e., the end face of the root of the external thread of the bypass valve housing 11), the on-off ring 21 is located in the annular groove, and an insulating glue insulated from the on-off ring 21 is coated in the annular groove and used for preventing the on-off ring 21 and the bypass valve housing 11 from being conductive.
A mounting hole for accommodating the conductor assembly 22 is formed in an end surface of the top of the drop-proof housing 12 (i.e., an end surface of the top of the internal thread of the drop-proof housing 12), and the conductor assembly 22 is located in the mounting hole and abuts against the on-off ring 21. When the bypass valve housing 11 and the drop-proof housing 12 are rotated relatively, the trigger conductor assembly 22 and the on-off ring 21 are switched from the off state to the on state, or from the on state to the off state.
In the embodiment, the on-off ring 21 is fixedly installed in the annular groove on the end face of the bottom of the bypass valve shell 11, the conductor assembly 22 is installed in the end face installation hole at the top end of the anti-drop shell 12, the on-off ring 21 and the conductor assembly 22 are integrally installed with the shell of the power drilling tool 1, the shell structure and the strength of the power drilling tool 1 are not affected, the power drilling tool is easy to machine, and the service life and the reliability are high.
In some alternative embodiments: referring to fig. 6 and 7, an embodiment of the present invention provides a downhole power drill with a downhole monitoring signal transmitting function, where the on-off ring 21 of the downhole power drill includes a metal conductive ring 211, 2 to 20 grooves are formed in an inner ring or an outer ring of the metal conductive ring 211 along a circumferential direction of the metal conductive ring 211, and an arc-shaped block 212 made of an insulating material is embedded in each groove. A conductive rib communicated with the conductor assembly 22 is formed between two adjacent arc-shaped blocks 212, and the conductive rib and the metal conductive ring 211 are of an integrated structure. To facilitate accurate installation, the arc length of the conductive bars is less than the arc length of the arc-shaped blocks 212.
When the bypass valve housing 11 and the anti-drop housing 12 are fastened to each other, the conductor assembly 22 abuts against the arc-shaped block 212, the electric circuit between the on-off ring 21 and the conductor assembly 22 is in an off state, and the monitoring unit 2 does not send an alarm signal to wellhead detection equipment when the power drilling tool 1 is in the downhole drilling operation. When the bypass valve housing 11 and the anti-drop housing 12 rotate relatively to cause the screw thread between the bypass valve housing 11 and the anti-drop housing 12 to loosen, the conductor assembly 22 is abutted against the conductive bar, the electric loop between the on-off ring 21 and the conductor assembly 22 is in a conducting state, and the monitoring unit 2 sends an electric signal to the signal control circuit board 33 at the first time when the power drilling tool 1 is in the underground drilling operation.
In some alternative embodiments: referring to fig. 5 and 8, embodiments of the present application provide a downhole motor having downhole monitoring signal transmission capability, the conductor assembly 22 of which includes an insulated pipe 221 and a conductor ram 222 disposed within the insulated pipe 221. The top end of the conductor ram 222 is domed to ensure that the head of the conductor ram 222 makes reliable contact and slides with the break-make ring 21.
A metal spring 223 is further disposed in the insulating tube 221 for pushing the conductor ram 222 to move toward the switching ring 21, and the metal spring 223 is preferably, but not limited to, a compression coil spring for ensuring a reliable contact force between the conductor ram 222 and the switching ring 21, and thus the conductor ram 222 can work even if it is worn. A line 225 is connected to the conductor pressure head 222 or the metal spring 223, and the line 225 is used to connect the signal control circuit board 33.
The top end of the insulating tube 221 is provided with a limit step for controlling the moving range of the conductor pressing head 222, and the limit step is used for controlling the moving range of the conductor pressing head 222 towards the direction of the on-off ring 21 and preventing the conductor pressing head 222 from being separated from the insulating tube 221 under the pushing action of the metal spring 223.
An insulating gland 224 is provided at the bottom end of the insulating tube 221, and the insulating gland 224 and the insulating tube 221 are used to prevent the conductor ram 222 and the metal spring 223 from being electrically conductive with the drop-proof housing 12. A threading hole for threading the conducting wire 225 is arranged on the insulating gland 224, and the conducting wire 225 is connected to the signal control circuit board 33 through the threading hole of the insulating gland 224.
The conductor pressing head 222 is a cylindrical structure with a thin upper part and a thick lower part, the conductor pressing head 222 is preferably made of copper with good electric conductivity, the upper end of the conductor pressing head 222 can freely move in a limiting step, the inner diameter of the limiting step is smaller than the diameter of the lower end of the conductor pressing head 222, and the lower end of the conductor pressing head 222 can freely move in the insulating tube 221.
In some alternative embodiments: referring to fig. 1, 3 and 4, the present embodiment provides a downhole motor having a downhole monitoring signal transmitting function, and a housing of the downhole motor includes a bypass valve housing 11, a drop-preventing housing 12, a stator housing 13, a universal shaft housing 14 and a drive shaft housing (not shown) which are screwed in sequence in an axial direction of the motor 1. Two ends of the anti-drop shell 12, the stator shell 13 and the universal shaft shell are respectively provided with an on-off ring 21 and a conductor assembly 22, and the bottom end of the bypass valve shell 11 and the top end of the transmission shaft shell are provided with the on-off ring 21 or the conductor assembly 22.
In the embodiment, at least two sets of conductor assemblies 22 are provided, one set of conductor assembly 22 is always connected to the metal conductive ring 211 of the on-off ring 21, the other set of conductor assembly 22 is connected to or disconnected from the on-off ring 21 when the bypass valve housing 11 and the anti-drop housing 12 rotate relatively, and the input end of the signal control circuit board 33 is electrically connected to the two sets of conductor assemblies 22 to form an electrical circuit. The signal control circuit board 33 processes the signal and sends the processed signal to the magnetic rod coil antenna 31, the magnetic rod coil antenna 31 wirelessly transmits the signal to a receiving pup joint which is not far away and is connected with a Measurement While Drilling (MWD), and the MWD uploads the signal to the ground to complete the wireless signal uploading function.
Principle of operation
The embodiment of the application provides an underground power drilling tool with an underground monitoring signal transmitting function, and the underground power drilling tool is provided with a power drilling tool 1 and a wireless transmission unit 3, wherein the power drilling tool 1 comprises shells which are sequentially screwed and connected along the axial direction of the power drilling tool 1, the outer wall of any shell is provided with a plurality of grooves, and the grooves are long grooves which are formed along the axial direction of the shells; the wireless transmission unit 3 comprises a signal control circuit board 33, a magnetic rod coil antenna 31 and a battery pack 32 which are electrically connected with each other, the signal control circuit board 33, the magnetic rod coil antenna 31 and the battery pack 32 are respectively fixed in the grooves, and cover plates 34 for closing the grooves are arranged on the notches of the grooves.
This application sets up wireless transmission unit 3 on the casing of power drilling tool 1, and wireless transmission unit 3 is closer apart from the fault point of power drilling tool 1, and wireless transmission unit 3 acquires on the signal of fault point with signal wireless transmission to the not far away and the receipt nipple joint that links to each other with the MWD, passes through the MWD and uploads the signal to ground completion wireless signal and upload the function.
Simultaneously this application has seted up a plurality of recesses on the outer wall of casing, and the recess is the elongated groove of seting up for the axis direction along the casing, and wireless transmission unit 3's bar magnet coil antenna 31 is located the recess and carries out wireless communication transmission. The long-shaped groove is formed in the outer wall of the shell, so that the influence of the circumferential annular groove needing to be formed in the annular coil on the structural strength of the shell is avoided, the probability of shell breakage is greatly reduced, and the service life of the underground power drilling tool is prolonged.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A downhole motor having a downhole monitoring signal transmitting function, comprising:
the power drilling tool (1) comprises shells which are sequentially screwed along the axial direction of the power drilling tool (1), a plurality of grooves are formed in the outer wall of any one shell, and each groove is an elongated groove formed in the axial direction of the corresponding shell;
the wireless transmission unit (3) comprises a signal control circuit board (33), a magnetic bar coil antenna (31) and a battery pack (32) which are electrically connected with each other, the signal control circuit board (33), the magnetic bar coil antenna (31) and the battery pack (32) are fixed in the grooves respectively, and cover plates (34) for sealing the grooves are arranged on the notches of the grooves.
2. A downhole motor having downhole monitoring signal transmitting function according to claim 1, wherein:
the grooves are uniformly distributed and arranged along the circumferential direction of the shell, the signal control circuit board (33), the magnetic rod coil antenna (31) and the battery pack (32) are connected through a cable (35), and a threading hole penetrating through the cable (35) is formed between every two adjacent grooves.
3. A downhole motor having downhole monitoring signal transmitting function according to claim 1, wherein:
the cover plate (34) is fixedly connected with the shell through screws, a sealing ring, a sealing gasket or a sealant is arranged between the cover plate (34) and the groove, and the cover plate (34) is made of nonmagnetic hard materials.
4. A downhole motor having downhole monitoring signal transmitting function according to claim 1, wherein:
the monitoring device is characterized by further comprising a monitoring unit (2) which comprises an on-off ring (21) and a conductor assembly (22), wherein the on-off ring (21) and the conductor assembly (22) are located between two adjacent shells, when the two adjacent shells rotate relatively, the on-off ring (21) and the conductor assembly (22) are connected or disconnected, and the on-off ring (21) and the conductor assembly (22) are electrically connected with the signal control circuit board (33).
5. The downhole motor having a downhole monitoring signal transmitting function according to claim 4, wherein:
make and break ring (21) and be located adjacent two on the terminal surface of one of them casing in the casing, one of them seted up on the terminal surface of casing and held the annular groove of making and breaking ring (21), make and break ring (21) and be located in the annular groove, and the coating has the insulating glue with making and breaking ring (21) insulation in the annular groove.
6. A downhole motor having a downhole monitoring signal transmitting function according to claim 4 or 5, wherein:
the on-off ring (21) comprises a metal conductive ring (211), wherein a plurality of grooves which are arranged at intervals are formed in the circumferential direction of the metal conductive ring (211) along the inner ring or the outer ring of the metal conductive ring (211), and an insulating material arc-shaped block (212) is embedded in each groove.
7. The downhole motor having a downhole monitoring signal transmitting function according to claim 4, wherein:
the conductor assembly (22) is positioned on the end face of the other of the two adjacent shells, the end face of the other shell is provided with a mounting hole for accommodating the conductor assembly (22), and the conductor assembly (22) is positioned in the mounting hole and abutted against the on-off ring (21).
8. A downhole motor having a downhole monitoring signal transmitting function according to claim 4 or 7, wherein:
the conductor assembly (22) comprises an insulating tube (221) and a conductor pressure head (222) located in the insulating tube (221), a metal spring (223) pushing the conductor pressure head (222) to move towards the direction of the on-off ring (21) is further arranged in the insulating tube (221), and a lead (225) is connected to the conductor pressure head (222) and/or the metal spring (223).
9. A downhole motor having downhole monitoring signal transmitting function according to claim 8, wherein:
one end of the insulating tube (221) is provided with a limiting step for controlling the moving range of the conductor pressing head (222), the other end of the insulating tube (221) is provided with an insulating pressing cover (224), a threading hole penetrating into the conducting wire (225) is formed in the insulating pressing cover (224), and the top end of the conductor pressing head (222) is a dome.
10. The downhole motor having a downhole monitoring signal transmitting function according to claim 4, wherein:
the casing includes the edge bypass valve casing (11), prevent falling casing (12), stator casing (13), universal shaft casing (14) and the transmission shaft casing that the axis direction of power drilling tool (1) screw thread connects in proper order, the both ends of preventing falling casing (12), stator casing (13) and universal shaft casing (14) are equipped with respectively break-make ring (21) or conductor assembly (22), the bottom of bypass valve casing (11) and the top of transmission shaft casing are equipped with break-make ring (21) or conductor assembly (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011285505.9A CN112832752A (en) | 2020-11-17 | 2020-11-17 | Downhole power drilling tool with downhole monitoring signal transmitting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011285505.9A CN112832752A (en) | 2020-11-17 | 2020-11-17 | Downhole power drilling tool with downhole monitoring signal transmitting function |
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| CN112832752A true CN112832752A (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011285505.9A Pending CN112832752A (en) | 2020-11-17 | 2020-11-17 | Downhole power drilling tool with downhole monitoring signal transmitting function |
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