A device for measuring resistivity near the drill bit while drilling

Abstract

The invention relates to the technical field of resistivity near drill bit while drilling, and specifically to a resistivity near drill bit while drilling measurement device, comprising a drill bit and a substrate arranged at one end of the drill bit, wherein an array on the substrate is provided with a placement groove, an array inside the substrate is provided with a measurement component, the measurement component is used for real-time detection of the geological environment, and the array on the substrate is provided with a protection component, the protection component is used for protecting the geological environment. The invention can rotate the entire protection ball during measurement to avoid frequent contact between one side of the protection shell and the geology during the protection process, thereby significantly reducing the service life of the entire protection shell. At the same time, during the protection process, when the protection shell encounters strong extrusion, it can drive the measurement element to be retracted into the entire substrate, thereby protecting the measurement element.

Description

Technical Field

[0001] The invention relates to the technical field of resistivity while drilling near a drill bit, in particular to a device for measuring resistivity while drilling near a drill bit. Background Art

[0002] The resistivity near-drill-bit measurement device for drilling resistivity refers to the use of special instruments to measure the resistivity of the formation in real time near the drill bit during the drilling process. This technology can provide drilling engineers with valuable formation information, helping them to better understand the characteristics of the current formation encountered, so as to make more accurate drilling decisions. This is of great significance for improving drilling efficiency, reducing drilling costs and ensuring drilling safety.

[0003] The resistivity measurement near the drill bit while drilling uses the principle of electromagnetic induction. By installing specific transmitting and receiving coils near the drill pipe or drill bit, an alternating electromagnetic field is emitted to the formation, and the induced current or voltage returned by the formation is measured, thereby calculating the resistivity of the formation. At the same time, the resistivity measurement near the drill bit while drilling can be carried out in real time during the drilling process to provide dynamic information on the resistivity of the formation.

[0004] When the above device is used, rock layers are usually encountered during drilling, resulting in contact between the measuring element and the rock layer when monitoring the real-time bottom resistivity. When hard stones are encountered during the drilling process, the stones are prone to form sharp corners after being broken. When these stones come into contact with the measuring element, the measuring element is easily scratched by the stone. When the squeezing force becomes larger, these stones can easily damage the measuring element, causing the entire measurement and monitoring process to be directly interrupted, making it impossible for the staff to monitor the position of the drill bit in real time, so that the drilling work can only be temporarily stopped for maintenance. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a device for measuring resistivity near the drill bit while drilling, which can rotate the entire protective ball during measurement to avoid frequent contact between one side of the protective shell and the geology during the protection process, thereby avoiding a significant reduction in the service life of the entire protective shell. At the same time, during the protection process, when the protective shell encounters strong squeezing, it can drive the measuring element to retract into the entire matrix, thereby protecting the measuring element.

[0006] To achieve the above object, the present invention provides the following technical solutions: a device for measuring resistivity near a drill bit while drilling, comprising a drill bit and a substrate arranged at one end of the drill bit, wherein an array of placement grooves is provided on the substrate, and an array of measurement components is provided inside the substrate, and the measurement components are used to perform real-time detection of the geological environment, and a protective component is provided on the substrate, and the protective component is used to play a protective role when measuring geology:

[0007] The protection assembly includes a protective ball arrayed on a base, a snap plate movably arranged on one side of the protective ball, a telescopic rod arrayed on the side of the snap plate away from the protective ball, a fixed gear ring arranged inside the protective ball, a matching gear arrayed on the side of the snap plate close to the inner wall of the protective ball, a rotating cylinder movably arranged on the snap plate, and a rotating gear arranged on the side of the rotating cylinder close to the matching gear;

[0008] The engaging plate is provided with an annular groove, the rotating drum is provided with a snap ring, the snap ring is in a T shape, and is used to form an engaging relationship with the annular groove on the engaging plate, and a bevel gear is provided at the end of the rotating drum away from the rotating gear, a telescopic spring is provided on the outer sleeve of the telescopic rod, and a fixed cylinder is provided at the end of the telescopic rod away from the engaging plate, and a cleaning component is provided in the array inside the base, and the cleaning component is used to clean and collect stains and water slurry on the surface of the protective ball;

[0009] The measuring assembly includes a support rod array arranged on the side of the clamping plate close to the fixed gear ring, a locking plate arranged on the end of the support rod away from the clamping plate, a measuring element arranged on the locking plate, a conveying line arranged on the side of the measuring element close to the clamping plate, and a protective cover sleeved on the outside of the conveying line;

[0010] A support plate is arranged inside the base, a sewage pipe is penetrated through the support plate, a fixed plate is arranged in an array on the side of the support plate close to the rotating drum, and the fixed plate and the fixed drum are fixedly connected, a motor is arranged on the side of the support plate close to the fixed plate, and a rotating shaft is arranged on one side of the motor, a bevel gear is arranged on the end of the rotating shaft away from the motor, and the bevel gear is meshed with the conical gear.

[0011] Preferably, the cleaning assembly includes a fixed seat arranged in an array inside the base body, a limiting rod arranged on the fixed seat, a rotating plate symmetrically and movably arranged on the limiting rod, and a cleaning cotton plate movably arranged at one end of the rotating plate.

[0012] Preferably, a sliding groove is provided through the rotating plate, and the sliding groove is slidably engaged with the limiting rod. Hinge blocks are provided at both ends of the rotating plate, and the hinge blocks are fixedly connected to the engaging plate and the cleaning cotton plate respectively.

[0013] Preferably, a T-shaped plate is provided on one side of the cleaning cotton plate close to the base body, a T-shaped groove is provided on the base body, and the T-shaped groove and the T-shaped plate are engaged and slidable.

[0014] Preferably, a snap plate is provided inside the placement slot, and the snap plate is fixedly connected to the placement slot, a closing plate is provided on one side of the snap plate, and rotating leaves are provided in an array inside the snap plate.

[0015] Preferably, the closing plate is provided with an array of arc-shaped grooves, the rotating blade is provided with a clamping rod, and the clamping rod is slidably engaged with the arc-shaped grooves.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the present invention uses a protective ball arranged on a base to protect the measuring element, the protective ball can rotate under the drive of a motor. When the rotating protective ball contacts the broken stones, it can relieve the force of the extrusion formed by the stones, so as to prevent the stones from directly piercing into the protective ball through their own hard and sharp corners to damage the measuring element. At the same time, when the protective ball is squeezed by the stones, the protective ball can retract the measuring element as a whole into the base, so as to provide secondary protection for the entire measuring element and improve the protection efficiency of the measuring element.

[0018] 2. At the same time, when the protective ball is retracted into the base, the cleaning cotton plate can be driven by the clamping plate to move toward the center of the protective ball until it contacts the surface of the protective ball, and the stains and slurry attached to the surface of the protective ball are cleaned. The cleaned slurry will drip into the V-shaped groove of the support plate and be collected, and finally discharged from the sewage pipe, so as to avoid the slurry adhering to the surface of the protective ball, so that the contact between the protective ball and the geological rock formation increases the wear degree of the protective ball;

[0019] 3. The snap plate arranged at the placement slot can make the rotating blade placed inside it seal the opening of the placement slot at all times. When the protective ball is completely retracted into the inside of the base body, the rotating blade will directly seal the gap of the entire placement slot without the obstruction of the protective ball, preventing small stones from the geological layer from directly entering the inside of the base body through the placement slot on the base body and affecting the extension of the entire protective ball. At the same time, intercepting these small stones can also prevent the small stones from falling into the inside of the base body and affecting the normal operation of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the device of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall side sectional structure of the device of the present invention.

[0022] Figure 3 It is a top cross-sectional schematic diagram of the substrate of the device of the present invention.

[0023] Figure 4 It is a partially enlarged schematic diagram of the internal structure of the substrate of the device of the present invention.

[0024] Figure 5 It is a schematic diagram of the explosion structure inside the base of the device of the present invention.

[0025] Figure 6 This is a schematic diagram of the internal structure of a half-section of the protective ball of the device of the present invention.

[0026] Figure 7 This is a schematic diagram of the explosion of the internal structure of the protective ball of the device of the present invention.

[0027] Figure 8 It is a partial schematic diagram of the internal structure of the substrate of the device of the present invention.

[0028] Fig. 9 The device of the present invention Figure 3 A partial enlarged schematic diagram in the middle.

[0029] Fig.10 The device of the present invention Figure 7 A partial enlarged schematic diagram of point B in the middle.

[0030] Fig.11 It is a partial enlarged schematic diagram of the snap plate structure of the device of the present invention.

[0031] In the figure: 1, drill bit; 2, base; 21, placement groove; 22, T-slot; 3, measuring assembly; 31, support rod; 32, locking plate; 33, measuring element; 34, conveying line; 35, protective sleeve; 4, protective assembly; 41, protective ball; 42, clamping plate; 421, annular clamping groove; 43, telescopic rod; 431, telescopic spring; 432, fixed cylinder; 44, fixed gear ring; 45, matching gear; 46, rotating cylinder; 461, clamping ring ;462, bevel gear;47, rotating gear;5, support plate;51, drain pipe;52, fixed plate;53, motor;54, rotating shaft;55, bevel gear;6, cleaning assembly;61, fixed seat;62, limit rod;63, rotating plate;631, sliding groove;632, hinge block;64, cleaning cotton plate;641, T-shaped plate;7, snap plate;71, closing plate;72, rotating leaf;711, arc groove;721, clamping rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figures 1 to 9, which is the first embodiment of the present invention, provides a technical solution: a device for measuring resistivity near a drill bit while drilling, comprising a drill bit 1 and a substrate 2 arranged at one end of the drill bit 1, wherein the substrate 2 is in a cylindrical shape and drives the drill bit 1 to rotate synchronously when the drill bit 1 needs to drill a hole, wherein an array of placement grooves 21 are provided on the substrate 2, wherein an array of measurement components 3 are provided inside the substrate 2, wherein the measurement components 3 are used to perform real-time detection of the geological environment, wherein an array of protection components 4 are provided on the substrate 2, wherein the protection components 4 are used to play a protective role when measuring geology:

[0035] The protection assembly 4 includes protection balls 41 arranged in an array on the base 2. The protection balls 41 have a spherical cavity inside. The protection balls 41 slide with the base 2 through a placement groove 21. The maximum diameter of the placement groove 21 is consistent with the outer wall diameter of the protection balls 41. When the protection balls 41 are squeezed by underground rocks, they can be automatically retracted into the base 2 to protect the measuring element 33 placed inside the protection balls 41. A snap plate 42 is movably arranged on one side of the protection balls 41. The snap plate 42 is in an I-shaped shape, and the center of the snap plate 42 is a cavity, which is used to mate with the protection balls 41. The protective balls 41 are engaged with each other to prevent the rotation of the protective balls 41 from affecting the engaging plate 42 during use. A telescopic rod 43 is arranged on the side of the engaging plate 42 away from the protective balls 41. The telescopic rod 43 is used to connect and fix the engaging plate 42 with the fixing cylinder 432. When the protective balls 41 are subjected to external force and shrink toward the inside of the base 2, the engaging plate 42 engaged therewith can shrink inward synchronously, so that the protective balls 41 can be received into the base 2. A fixed tooth ring 44 is arranged inside the protective balls 41. The fixed tooth ring 44 is used to cooperate with the fixing ring on the engaging plate 42. The gears 45 are matched with each other. When the matching gear 45 and the rotating gear 47 on the rotating drum 46 are meshed and rotated, the fixed gear ring 44 in the protective ball 41 is driven to rotate synchronously, so that the protective ball 41 can rotate by itself when protecting the measuring element 33, so that the protective ball 41 can realize self-rotation, and the resistance and friction from the outside are distributed to the outer surface of the protective ball 41, thereby reducing the wear of the protective ball 41. The matching gears 45 are arranged in an array on the side of the inner wall of the clamping plate 42 close to the protective ball 41, and the matching gears 45 are used to match with the rotating gear 47. , under the rotation of the rotating gear 47, the matching gear 45 is driven to rotate synchronously, and the rotating cylinder 46 movably arranged on the locking plate 42 is a telescopic cylinder. The rotating gear 47 is arranged on the side of the rotating cylinder 46 close to the matching gear 45. The rotating gear 47 and the matching gear 45 are meshed. Under the rotation of the rotating cylinder 46, the rotating gear 47 is driven to rotate synchronously, and the matching gear 45 can transmit the rotation to the fixed gear ring 44 that is also meshed with it, and the protective ball 41 is driven by the fixed gear ring 44 to rotate synchronously.

[0036] The engaging plate 42 is provided with an annular engaging groove 421, which is used to engage and slide with a snap ring 461 on the rotating drum 46. Under the action of the two, the movement of the engaging plate 42 is synchronized with the contraction of the rotating drum 46, avoiding misalignment between the rotating gear 47 and the matching gear 45 provided on the rotating drum 46, resulting in no meshing. The rotating drum 46 is provided with a snap ring 461, which is in a T shape and is used to form an engaging relationship with the annular engaging groove 421 on the engaging plate 42, and the rotating drum 46 is provided with a bevel gear 462 at one end away from the rotating gear 47. The bevel gear 462 is used to cooperate with the bevel gear 55, and under the action of the two, the rotating drum 46 is driven to rotate synchronously.

[0037] The telescopic rod 43 is externally sleeved with a telescopic spring 431, which is used to reset the protective ball 41. The telescopic rod 43 is provided with a fixed tube 432 at one end away from the clamping plate 42, and the fixed tube 432 is used to be fixedly connected with the fixed plate 52. Through the fixation of the two, the clamping plate 42 provided at the other end of the telescopic rod 43 will not rotate at an angle when moving. The internal array of the base 2 is provided with a cleaning component 6, which is used to clean and collect stains and water slurry on the surface of the protective ball 41.

[0038] The measuring assembly 3 includes a support rod 31 arrayed on one side of the clamping plate 42 close to the fixed gear ring 44, a locking plate 32 arranged on the end of the support rod 31 away from the clamping plate 42, the locking plate 32 is an annular plate, and is fixed to the measuring element 33 by bolts to prevent the measuring element 33 from moving with the clamping plate 42 when it is displaced, resulting in contact and collision between the measuring element 33 and the protective ball 41, and the measuring element 33 arranged on the locking plate 32 is used to measure and detect the geological conditions of the drill bit 1. The conveyor line 34 installed at one end of 33 transmits the collected receipts to the information processing center on the ground, which is convenient for the staff to conduct real-time monitoring. The conveyor line 34 is arranged on the side of the measuring element 33 close to the clamping plate 42. The conveyor line 34 is used to transmit the real-time data monitored by the measuring element 33. The protective cover 35 is sleeved on the outside of the conveyor line 34. The protective cover 35 is used to store and arrange the four conveyor lines 34 and protect these conveyor lines 34 to avoid the conveyor lines 34 being entangled together inside the entire base 2 during use, which causes the conveyor lines 34 to be worn more and the service life to be reduced.

[0039] A support plate 5 is provided inside the base body 2, and the support plate 5 is fixedly connected to the base body 2, so that the base body 2 drives the rotation of the drill bit 1 without affecting the support plate 5 while the support plate 5 is positioned. A V-shaped collecting groove is provided on the support plate 5, which is used to temporarily store the collected sewage and finally discharge it from the sewage pipe 51. At the same time, a certain recessed area is provided inside the support plate 5, which is used to place the motor 53, so that the motor 53 can rotate the bevel gear 55 through the rotating shaft 54 ​​after receiving the signal from the signal end, and drive the bevel gear 462 to rotate. A sewage pipe 51 is provided through the support plate 5, and the sewage pipe 51 is used to guide the sewage collected in the V-shaped groove on the support plate 5 to prevent the sewage from remaining in the entire device. The support plate 5 is provided with a motor 53 on one side close to the fixed plate 52, and the motor 53 is used to start after receiving a signal transmitted from the conveying line 34, and the bevel gear 55 is rotated through the rotating shaft 54, and a rotating shaft 54 ​​is provided on one side of the motor 53, and the center of the rotating shaft 54 ​​is a cavity, which is used to facilitate the connection between one end of the conveying line 34 and the motor 53, and a bevel gear 55 is provided on the end of the rotating shaft 54 ​​away from the motor 53, and the bevel gear 55 is meshed with the conical gear 462.

[0040] During use, the entire device is first placed at the location to be drilled. When drilling is required, the drill bit 1 is used to perform drilling operations. When the drill bit 1 performs drilling operations, it will directly contact and drill holes with the underground geological layer. When the base 2 installed on the drill bit 1 moves synchronously with the drill bit 1, the measuring element 33 arranged inside the protective ball 41 will penetrate the formation through the alternating electromagnetic field generated by the transmitting coil with a magnetic core installed inside it, and generate an induced current in the formation. The resistivity of the formation is calculated through the induced current or voltage returned by the formation, and the position of the drill bit 1 is calculated accordingly. During the drilling operation of the drill bit 1, the motor 53 arranged on the support plate 5 will receive When the motor 53 receives the start signal transmitted from the conveyor line 34, it transmits power to the bevel gear 55 through the rotating shaft 54 ​​when it is started, so that the bevel gear 462 meshing with the bevel gear 55 rotates, and the rotation of the bevel gear 462 drives the rotating drum 46 to rotate synchronously, so that the rotating gear 47 provided on the rotating drum 46, the matching gear 45 on the clamping plate 42 and the fixed gear ring 44 inside the protective ball 41 are meshed, and the rotation of the rotating drum 46 is transmitted to the protective ball 41, so that the protective ball 41 rotates as a whole in the process of protecting the measuring element 33, and the external resistance and friction are distributed to the outer surface of the protective ball 41, thereby reducing the wear of the protective ball 41.

[0041] Example 2

[0042] See also Figures 1 to 10 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that:

[0043] The cleaning assembly 6 includes a fixed seat 61 arranged in an array inside the base 2. There are four fixed seats 61. The fixed seats 61 are arranged in a group of two horizontally and are located outside the placement groove 21. The limiting rods 62 fixedly connected thereto will not block the movement of the protective ball 41. The limiting rods 62 arranged on the fixed seats 61 have a smaller diameter in the middle section and are used to cooperate with the rotating plate 63. By passing through the sliding groove 631 on the rotating plate 63, the cleaning cotton plate 64 rotatably connected to the other end of the rotating plate 63 can be close to the protective ball 41. The rotating plate 63 symmetrically arranged on the limiting rod 62 63, the two ends of the rotating plate 63 are respectively fixed to the locking plate 42 and the cleaning cotton plate 64 through the hinge blocks 632, and the rotating plate 63 and the hinge blocks 632 are in a rotational relationship, which is used to drive the rotating plate 63 to rotate when the locking plate 42 is displaced, so that the cleaning cotton plate 64 connected to the other end of the rotating plate 63 can move toward the center of the placement groove 21 under the pulling force of the rotating plate 63, and the cleaning cotton plate 64 is movably arranged at one end of the rotating plate 63. The cleaning cotton plate 64 is used to clean the surface stains of the protective ball 41 when the protective ball 41 is retracted into the base 2.

[0044] The rotating plate 63 is provided with a sliding groove 631, and the sliding groove 631 is slidably engaged with the limiting rod 62. Both ends of the rotating plate 63 are provided with hinge blocks 632, and the hinge blocks 632 are respectively fixedly connected to the engaging plate 42 and the cleaning cotton plate 64. There is a rotation mode between the hinge block 632 and the rotating plate 63, which is used to facilitate the rotation of the rotating plate 63.

[0045] A T-shaped plate 641 is provided on the side of the cleaning cotton board 64 close to the base 2, and a T-shaped slot 22 is opened on the base 2, and the T-shaped slot 22 and the T-shaped plate 641 are engaged and slid. The T-shaped plate 641 is used to enable the cleaning cotton board 64 to move along the T-shaped slot 22 when the cleaning cotton board 64 is displaced after being pulled by the rotating plate 63, so as to avoid the cleaning cotton board 64 from moving synchronously toward the center of the base 2 when moving vertically.

[0046] At the same time, when facing stones with sharp corners, the rotating protective ball 41 will be able to form a force release state, so that these stones will not directly penetrate into the protective shell and cause damage to the measuring element 33 installed inside. At the same time, when the protective ball 41 contacts the stone to form an extrusion force, the protective ball 41 will be able to directly retract into the base 2 under the action of the clamping plate 42 and the telescopic spring 431 on the telescopic rod 43. When retracting into the base 2, the cleaning component 6 set will be able to clean the stains adhered to the surface of the protective ball 41, and the protective ball 41 will enter the base through the placement groove 21. 2, temporarily isolating the measuring element 33 from the outside contact conditions. When the protective ball 41 enters the inside of the base 2, the rotating plate 63 arranged on the clamping plate 42 will rotate under the limit of the limit rod 62 and the action of the sliding groove 631 provided on itself, so that the cleaning cotton plate 64 arranged at the other end of the rotating plate 63 can move along the T-shaped groove 22 toward the center of the placement groove 21, so that the cleaning cotton plate 64 contacts the outer surface of the protective ball 41, and the contacting protective ball 41 will wipe off the stains under the cleaning of the cleaning cotton plate 64. .

[0047] The remaining structures are the same as those of Example 1.

[0048] Example 3

[0049] See also Figures 1 to 11 , which is the third embodiment of the present invention. This embodiment is different from the first and second embodiments in that:

[0050] A snap plate 7 is provided inside the placement groove 21, and the snap plate 7 is fixedly connected to the placement groove 21. The snap plate 7 is formed by a circular plate and an arc-shaped ring plate being snapped together. A torque spring and an embedded ring are provided inside the snap plate 7 to provide elastic force at all times so that one end of the rotating leaf 72 can rotate toward the center of the snap plate 7. A closing plate 71 is provided on one side of the snap plate 7. The closing plate 71 is used to limit the rotating leaf 72 placed inside the snap plate 7 to prevent the rotating leaf 72 from falling off the snap plate 7. The internal array of the snap plate 7 is provided with rotating leaves 72, and the rotating leaves 72 are located inside the snap plate 7 and are hinged with an embedded ring. Under the action of the embedded ring and the torque spring, the rotating leaves 72 can face the center of the snap plate 7 without the action of external force, thereby blocking the entrance of the placement groove 21. When the protective ball 41 is retracted into the base 2, the rotating leaves 72 can be deflected at an angle under the reset of the torque spring placed inside the snap plate 7, so that the rotating leaves 72 can seal the placement groove 21.

[0051] The closing plate 71 is provided with an array of arc grooves 711, and the rotating leaf 72 is provided with a latch rod 721, and the latch rod 721 is slidably engaged with the arc groove 711. The arc groove 711 on the closing plate 71 is used to prevent the rotating leaf 72 from over-rotating when the rotating leaf 72 rotates. The rotation of the rotating leaf 72 is controlled by the cooperation between the latch rod 721 on the rotating leaf 72 and the arc groove 711.

[0052] At the same time, the V-shaped groove on the support plate 5 is used to collect the stains and slurry cleaned by the cleaning cotton board 64, and finally discharge the slurry to the outside of the entire base 2 through the sewage discharge pipe 51 installed on the support plate 5. When the protective ball 41 retracts into the inside of the base 2, the rotating leaves 72 of the array in the snap plate 7 installed in the placement groove 21 will be driven by the torque spring and the embedded ring arranged inside the snap plate 7 to rotate without external force, thereby sealing the placement groove 21. When the surface of the protective ball 41 is no longer subjected to excessive compression, the protective ball 41 is pushed out of the placement groove 21 again under the elastic force of the telescopic spring 431, and the resistivity monitoring of the geological layer continues, and the monitored data is transmitted to the ground through the transmission line 34.

[0053] The remaining structures are the same as those of embodiments 1 and 2.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring resistivity near a drill bit while drilling, comprising a drill bit (1) and a substrate (2) arranged at one end of the drill bit (1), characterized in that: The substrate (2) is provided with a placement slot (21) in an array, the substrate (2) is provided with a measurement component (3) in an array inside, the measurement component (3) is used to perform real-time detection of the geological environment, and the substrate (2) is provided with a protection component (4) in an array, the protection component (4) is used to play a protective role when measuring the geology: The protection assembly (4) comprises protection balls (41) arranged in an array on a base (2), a clamping plate (42) movably arranged on one side of the protection balls (41), telescopic rods (43) arranged in an array on a side of the clamping plate (42) away from the protection balls (41), a fixed toothed ring (44) arranged inside the protection balls (41), a matching gear (45) arranged in an array on a side of the clamping plate (42) close to the inner wall of the protection balls (41), a rotating cylinder (46) movably arranged on the clamping plate (42), and a rotating gear (47) arranged on a side of the rotating cylinder (46) close to the matching gear (45); The engaging plate (42) is provided with an annular engaging groove (421), the rotating cylinder (46) is provided with a snap ring (461), the snap ring (461) is in a T shape and is used to form an engaging relationship with the annular engaging groove (421) on the engaging plate (42), and a bevel gear (462) is provided at one end of the rotating cylinder (46) away from the rotating gear (47), a telescopic spring (431) is sleeved on the outside of the telescopic rod (43), and a fixed cylinder (432) is provided at one end of the telescopic rod (43) away from the engaging plate (42), and a cleaning assembly (6) is provided in an array inside the base (2), and the cleaning assembly (6) is used to clean and collect dirt and water slurry on the surface of the protective ball (41); The measuring assembly (3) comprises a support rod (31) arranged in an array on a side of the engaging plate (42) close to the fixed gear ring (44), a locking plate (32) arranged on an end of the support rod (31) away from the engaging plate (42), a measuring element (33) arranged on the locking plate (32), a conveying line (34) arranged on a side of the measuring element (33) close to the engaging plate (42), and a protective sleeve (35) sleeved on the outside of the conveying line (34); A support plate (5) is arranged inside the base body (2), a sewage discharge pipe (51) is arranged through the support plate (5), a fixed plate (52) is arranged in an array on a side of the support plate (5) close to the rotating drum (46), and the fixed plate (52) is fixedly connected to the fixed drum (432), a motor (53) is arranged on a side of the support plate (5) close to the fixed plate (52), and a rotating shaft (54) is arranged on one side of the motor (53), a bevel gear (55) is arranged on one end of the rotating shaft (54) away from the motor (53), and the bevel gear (55) is meshed with the bevel gear (462).

2. The device for measuring resistivity near the drill bit while drilling according to claim 1, characterized in that: The cleaning assembly (6) comprises a fixed seat (61) arranged in an array inside the base (2), a limiting rod (62) arranged on the fixed seat (61), a rotating plate (63) symmetrically movably arranged on the limiting rod (62), and a cleaning cotton plate (64) movably arranged at one end of the rotating plate (63).

3. The device for measuring resistivity near the drill bit while drilling according to claim 2, characterized in that: The rotating plate (63) is provided with a sliding groove (631) extending therethrough, and the sliding groove (631) is slidably engaged with the limiting rod (62). Both ends of the rotating plate (63) are provided with hinge blocks (632), and the hinge blocks (632) are respectively fixedly connected to the engaging plate (42) and the cleaning cotton plate (64).

4. The device for measuring resistivity near the drill bit while drilling according to claim 2, characterized in that: A T-shaped plate (641) is provided on one side of the cleaning cotton plate (64) close to the base body (2), a T-shaped groove (22) is provided on the base body (2), and the T-shaped groove (22) and the T-shaped plate (641) are engaged and slidably engaged with each other.

5. The device for measuring resistivity near the drill bit while drilling according to claim 4, characterized in that: A snap plate (7) is arranged inside the placement groove (21), and the snap plate (7) and the placement groove (21) are fixedly connected, a closing plate (71) is arranged on one side of the snap plate (7), and a rotating leaf (72) is arranged in an array inside the snap plate (7).

6. The device for measuring resistivity near the drill bit while drilling according to claim 5, characterized in that: The closing plate (71) is provided with an array of arc-shaped grooves (711), the rotating blade (72) is provided with a clamping rod (721), and the clamping rod (721) is slidably engaged with the arc-shaped groove (711).

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