CN111042807B - Identification method and device for tuff hydrocarbon source rock exploration logging - Google Patents
Identification method and device for tuff hydrocarbon source rock exploration logging Download PDFInfo
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- CN111042807B CN111042807B CN201911357100.9A CN201911357100A CN111042807B CN 111042807 B CN111042807 B CN 111042807B CN 201911357100 A CN201911357100 A CN 201911357100A CN 111042807 B CN111042807 B CN 111042807B
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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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
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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
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention discloses a method and a device for identifying tuff hydrocarbon source rock exploration logging, which comprises the steps of building logging, putting a detection device into the logging, polishing the wall of a well to remove obstacles and flatten the wall of the well, enabling a detection port of the detection device to approach and finally cling to the wall of the well, acquiring data of a stratum in the well, adjusting the position and the angle of the detection device, changing the detection position and the angle of the detection device, and acquiring data of different stratums in the well until areas needing to be detected are all detected; finally, the logging detection device is taken out, interference between different transmitting polar plates and receiving polar plate frequencies can be avoided through the method, the accuracy of the obtained resistivity is guaranteed, logging identification is improved accurately, the structure of the logging device is simplified, the cost is reduced, the body type is reduced, convenience is brought to logging, the well wall can be polished to be smooth before the rock stratum structure around the well wall is detected, the detection device can be prevented from being damaged due to collision, the detection device is protected, and the service life of the detection device is prolonged.
Description
Technical Field
The invention relates to the technical field of logging identification, in particular to an identification method and device for tuff hydrocarbon source rock exploration logging.
Background
Source rocks include source rocks, source rocks and source rocks, traditionally commonly referred to as pay rocks. French petrogeologist Tissot (1978) et al define the source rock as: rock rich in organic matter, capable of generating oil gas in large quantity and discharging oil gas. A "source rock is a rock that is capable of producing or has produced mobile hydrocarbons. The conditions that the source rock should have: contains a large amount of organic matters, namely kerogen; the threshold temperature of kerogen converted into oil gas is reached, namely the burial depth.
A set of lithological combinations of petroliferous rock and non-petroliferous rock, called petroliferous rock series, are formed under the same geological background in a certain period of history. The petrolifes are mainly low energy argillaceous and carbonate sludge deposits, but not all fine particle deposits of low energy environments are petrolifes. It is generally difficult to determine whether a petroliferous rock is produced based solely on its lithology. The research on the hydrocarbon source rock generally needs to analyze three aspects of organic matter abundance, organic matter type and organic matter maturity to make qualitative and quantitative evaluation.
During the exploration of tuff hydrocarbon source rocks, measurements are often made of the rock formations around the borehole wall to obtain formation data. The existing logging method mainly adopts an electrical logging method, wherein the electrical logging method mainly utilizes low-frequency electromagnetic waves to transmit in an underground rock stratum, obtains resistivity data of the rock stratum around a well wall through ohm's law, and can obtain whether liquid in the rock stratum is high-resistivity oil or low-resistivity water according to the resistivity data. In the actual logging process, because the well is cylindrical and the rock composition is not completely the same in all directions of the well wall, a plurality of transmitting polar plates and receiving polar plates need to be placed in the logging system at the same time.
In the current logging system, different frequencies are adopted among different polar plates, so that each receiving polar plate can simultaneously receive voltage signals of different frequencies, and in actual measurement, it can be found that side lobes of adjacent frequencies interfere with main frequency receiving due to non-orthogonality among the frequencies, and leaked frequencies can generate serious interference on the adjacent frequencies, so that the receiving voltage acquired by a processor is inaccurate, and the accuracy of the acquired resistivity is influenced.
Meanwhile, the transmitting polar plate and the receiving polar plate are required to be tightly attached to the well wall in the detection process, but due to the fact that the well wall is uneven and has protrusions and grooves, the transmitting polar plate and the receiving polar plate cannot be precisely attached to the well wall, and accuracy and reliability of the logging identification device are affected.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the method and the device for identifying the exploration logging of the tuff hydrocarbon source rock, which can avoid the interference between the frequencies of different transmitting polar plates and receiving polar plates, ensure the accuracy of the obtained resistivity, improve the well logging identification precision, simplify the structure of the logging device, reduce the cost and the body type, bring convenience to the logging and effectively solve the problems in the background art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an identification method for exploration logging of tuff hydrocarbon source rocks comprises the following steps:
step 100, building a well logging, and placing a detection device into the well logging;
step 200, polishing the well wall of the well logging, removing obstacles and flattening the well wall;
step 300, pushing the detection device to enable a detection port of the detection device to approach to and finally cling to the well wall, and acquiring data of a stratum in the well;
step 400, adjusting the position and the angle of the detection device, changing the detection position and the angle of the detection device, and acquiring data of different stratums in the well until areas needing to be detected are detected;
and 500, taking out the logging detection device.
Further, in step 300, the specific process of acquiring the data of the formation in the well by the detection device is as follows:
301, acquiring the emission current of an emission polar plate;
303, acquiring corresponding resistivity according to the transmitting current of the transmitting polar plate and the voltage signal of the receiving polar plate;
and step 304, sending the resistivity to a ground server so that the ground server can obtain data of the stratum in the well according to each resistivity.
The invention also provides an identification device for the exploration logging of tuff hydrocarbon source rocks, which comprises a detection and adjustment device, wherein the detection and adjustment device comprises a fixed rotating shaft vertically penetrating through a logging axis, a mounting disc penetrates through the fixed rotating shaft, three mounting frames are radially arranged on the outer side of the mounting disc, the mounting frames are provided with extension cylinders, the output end of one of the extension cylinders is connected with an obstacle clearing frame, the obstacle clearing frame is provided with an obstacle clearing roller and an obstacle clearing motor, the clearing motor is connected with the obstacle clearing roller, the output ends of the other two extension cylinders are provided with support frames, and the support frames are provided with support rollers.
Further, still be provided with adjustable mount on the mounting disc, the front end of adjustable mount is provided with the fixed plate, the one side of fixed plate is just facing the wall of a well, and this face installs well logging detection device, adjustable mount includes the solid fixed cylinder who links to each other with the mounting disc is fixed, gu fixed cylinder follows the radial setting of mounting disc, wear to be equipped with in the solid fixed cylinder and adjust the pole, the fixed plate sets up the end at adjusting the pole, gu be provided with the top in the fixed cylinder and stretch the cylinder, the output that stretches the cylinder links to each other with adjusting the pole.
Furthermore, the detection adjusting device also comprises a driving groove spirally arranged outside the fixed rotating shaft and an adjusting frame arranged on the mounting disc, an adjusting rack is laid in the driving groove, an adjusting gear is arranged on the adjusting frame, the adjusting gear is meshed with the adjusting rack, an adjusting motor is also arranged on the adjusting frame, and the adjusting motor is connected with the adjusting gear;
furthermore, the surface of the fixed rotating shaft is also provided with a lifting groove, the lifting groove is positioned above the driving groove, a lever is arranged on the mounting disc, the adjusting frame is arranged at one end of the lever, the other end of the lever is provided with a lifting frame, the mounting disc is hinged with a control cylinder, and the output end of the control cylinder is hinged with the lower end of the lever.
Furthermore, a lifting rack is arranged in the lifting groove, a lifting gear is arranged on the lifting frame, the lifting gear is meshed with the lifting rack, and a lifting motor is further arranged on the lifting frame and connected with the lifting gear.
Further, the logging detection device comprises an emitting polar plate, a receiving polar plate, an emitting frequency controller and a processor, wherein the emitting frequency controller is respectively electrically connected with the processor and the emitting polar plate, and the emitting frequency controller is used for generating emitting current corresponding to the emitting polar plate and triggering the emitting polar plate to emit the corresponding emitting current under the control of the processor.
Further, the processor is electrically connected with the transmitting polar plate and the receiving polar plate, and is used for acquiring transmitting current of the transmitting polar plate and acquiring voltage signals of the receiving polar plate; and acquiring corresponding resistivity according to the transmitting current of the transmitting polar plate and the voltage signal of the receiving polar plate, and then sending the resistivity to a ground server so that the ground server can acquire data of the stratum in the well according to the resistivity.
Further, the treater is including acquireing module, processing module and bus module, it is connected with transmitting polar plate and receiving polar plate electricity respectively to acquire the module, acquire the module and be used for acquireing the transmitting current of transmitting polar plate and the voltage signal who acquires the receiving polar plate, processing module is used for carrying out inner product processing to the voltage signal who receives from the receiving polar plate and two predetermined quadrature signals, acquires the target voltage of receiving polar plate, processing module still is used for according to the transmitting current of transmitting polar plate and the target voltage of receiving polar plate, acquires corresponding resistivity, the bus module is connected with processing module and ground server electricity respectively for send the resistivity for ground server.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adopts a group of transmitting polar plates and receiving polar plates, the abundance condition of organic matters in one region is measured by the cooperation of the transmitting polar plates and the receiving polar plates, after the abundance condition of the organic matters in the region is measured, the positions of the transmitting polar plates and the receiving polar plates are transferred to change the measuring region, and after a plurality of times of measurement, the abundance condition of the organic matters in the measuring well can be measured. By the method, the non-orthogonality between different frequencies of the transmitting polar plate and the receiving polar plate is avoided, and the interference to side lobes of adjacent frequencies is avoided, so that the accuracy of the obtained resistivity is ensured, and the well logging identification accuracy is improved;
(2) because only one group of transmitting polar plates and receiving polar plates exist, the arrangement simplifies the structure of the logging device, reduces the cost and the size, and brings convenience to logging;
(3) when the rock stratum structure around the well wall is detected, the well wall is polished to be flat and smooth, so that the detection device can be tightly attached to the well wall, the accuracy and the reliability of well logging identification are enhanced, meanwhile, the detection device is prevented from being damaged due to collision, the detection device is protected, and the service life of the detection device is prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the detecting and adjusting device of the present invention;
FIG. 3 is a schematic view of a fixed shaft according to the present invention;
FIG. 4 is a schematic diagram of a lever according to the present invention;
FIG. 5 is a schematic structural diagram of the logging detection device of the present invention.
Reference numbers in the figures:
1-detecting the regulating device; 2-a logging detection device; 3-adjustable fixing frame;
101-fixing the rotating shaft; 102-mounting a disc; 103-a mounting frame; 104-a reach out cylinder; 105-a barrier clearance rack; 106-a cleaning roller; 107-clearing the motor; 108-a scaffold; 109-supporting rolls; 110-a fixed plate; 111-a drive slot; 112-an adjusting bracket; 113-adjusting the rack; 114-an adjustment gear; 115-a regulating motor; 116-a lifting groove; 117-lever; 118-a crane; 119-a control cylinder; 120-lifting rack; 121-lifting gear; 122-a lift motor;
201-an emitting plate; 202-a receiving plate; 203-a transmit frequency controller; 204-a processor; 205-an acquisition module; 206-a processing module; 207-bus module;
301-a stationary cartridge; 302-adjusting rod; 303-projecting the cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
The invention provides an identification method for exploration logging of tuff hydrocarbon source rocks, which comprises the following steps
Step 100, building a well logging, and placing a detection device into the well logging;
step 200, polishing the well wall of the well logging, removing obstacles and flattening the well wall;
step 300, pushing the detection device to enable a detection port of the detection device to approach to and finally cling to the well wall, and acquiring data of the stratum in the well, wherein the specific process of acquiring the data of the stratum in the well is as follows: acquiring emission current of an emission polar plate; acquiring a voltage signal of a receiving polar plate corresponding to the transmitting polar plate; acquiring resistivity according to the transmitting current of the transmitting polar plate and the voltage signal of the receiving polar plate; sending the resistivity to a ground server so that the ground server can obtain data of the stratum in the well according to each resistivity; adjusting the position and the angle of the detection device, changing the detection position and the angle of the detection device, and acquiring data of different stratums in the well until areas needing to be detected are all detected;
and 500, taking out the logging detection device.
The logging method mainly adopts an electrical logging method, wherein the electrical logging method mainly utilizes low-frequency electromagnetic waves to transmit in an underground rock stratum, obtains resistivity data of the rock stratum around a well wall through ohm's law, and can obtain whether liquid in the rock stratum is high-resistivity petroleum or low-resistivity water according to the resistivity data. In the existing well logging process, because the well is cylindrical and the rock composition conditions are not completely the same in all directions of the well wall, a plurality of transmitting polar plates and receiving polar plates need to be placed in the well logging system at the same time and all the transmitting polar plates and the receiving polar plates are arranged to be tightly attached to the well wall. In the current logging system, different frequencies are adopted among different polar plates, so that each receiving polar plate can simultaneously receive voltage signals of different frequencies, and in actual measurement, it can be found that side lobes of adjacent frequencies interfere with main frequency receiving due to non-orthogonality among the frequencies, and leaked frequencies can generate serious interference on the adjacent frequencies, so that the receiving voltage acquired by a processor is inaccurate, and the accuracy of the acquired resistivity is influenced. Meanwhile, due to the fact that the plurality of transmitting polar plates and the plurality of receiving polar plates are arranged, the logging device is complex in structure and high in cost, and inconvenience is brought to logging due to the fact that the logging device is large in size.
In order to overcome the defects, the invention adopts a group of transmitting polar plates and receiving polar plates, the abundance condition of organic matters in one region is measured by matching the transmitting polar plates and the receiving polar plates, after the abundance condition of the organic matters in the region is measured, the positions of the transmitting polar plates and the receiving polar plates are transferred without changing the measuring regions, and after the abundance condition of the organic matters in the measuring well is measured for many times, the abundance condition of the organic matters in the measuring well can be measured. By the method, non-orthogonality between different frequencies of the transmitting polar plate and the receiving polar plate is avoided, and sidelobe interference to adjacent frequencies is avoided, so that the accuracy of the obtained resistivity is ensured, the logging identification accuracy is improved, the structure of the logging device is simplified by the arrangement, the cost is reduced, the size is reduced, and convenience is brought to logging.
It should be noted that, in step 200 of the logging identification method of the present invention, the main reason for polishing the well wall of the logging well is that the transmitting pole plate needs to be tightly attached to the well wall in the logging identification process, and the well wall is polished only in order to make the transmitting pole plate and the well wall tightly attached. In the process of making a well log in step 100, the well wall of the well log is roughly polished, the polishing is only carried out in the well logging process, and a plurality of bulges exist on the well wall of the well log, so that the transmitting polar plate cannot be tightly attached to the well wall, and the polishing can remove the barriers protruding from the well wall, so that the transmitting polar plate is flat and smooth, and the transmitting polar plate is conveniently tightly attached to the well wall.
As shown in fig. 1 to 5, the invention further provides an identification device for exploration logging of tuff hydrocarbon source rock, which includes a detection adjustment device 1 and a logging detection device 2, wherein the logging detection device 2 is a main component for implementing logging identification, the logging detection device 2 includes a transmitting pad 201, a receiving pad 202, a transmitting frequency controller 203 and a processor 204, the transmitting frequency controller 203 is electrically connected with the processor 204 and the transmitting pad 201, respectively, the transmitting frequency controller 203 is used for generating a transmitting current corresponding to the transmitting pad 201 and triggering the transmitting pad 201 to transmit the corresponding transmitting current under the control of the processor 204.
As shown in fig. 1 and fig. 5, in the present invention, the processor 204 is electrically connected to the transmitting pad 201 and the receiving pad 202, and the processor 204 is configured to obtain a transmitting current of the transmitting pad 201 and obtain a voltage signal of the receiving pad 202; and the corresponding resistivity is obtained according to the transmitting current of the transmitting polar plate 201 and the voltage signal of the receiving polar plate 202, and then the resistivity is sent to a ground server so that the ground server can obtain the data of the stratum in the well according to the resistivity.
As shown in fig. 5, in the present invention, the processor 204 includes an obtaining module 205, a processing module 206, and a bus module 207, the obtaining module 205 is electrically connected to the transmitting plate 201 and the receiving plate 202, the obtaining module 205 is configured to obtain a transmitting current of the transmitting plate 201 and obtain a voltage signal of the receiving plate 202, the processing module 206 is configured to perform inner product processing on the voltage signal received from the receiving plate 202 and two preset orthogonal signals to obtain a target voltage of the receiving plate 202, the processing module 206 is further configured to obtain a corresponding resistivity according to the transmitting current of the transmitting plate 201 and the target voltage of the receiving plate 202, and the bus module 207 is electrically connected to the processing module 206 and a ground server respectively and is configured to send the resistivity to the ground server.
In the invention, the logging detection device 2 is arranged in the detection adjusting device 1, and the detection adjusting device 1 can change the position and the angle of the logging detection device 2. Wherein, it can divide into two parts to detect adjusting device 1 and change the position and the angle of logging detection device 2, the first part is that drive logging detection device 2 moves down to the detection area from the logging entrance before the beginning of detection, and drive logging detection device 2 and move to the logging entrance from the detection area after the detection is accomplished, the second part is that logging detection device 2 is located the detection area, when the detection goes on, slowly rotate logging detection device 2, change its detection area at horizontal angle, slowly go up and down logging detection device 2 simultaneously, change its detection area in vertical direction.
In order to realize the functions of the first part, as shown in fig. 2, 3 and 4, the detection and adjustment device 1 of the present invention includes a fixed rotating shaft 101 vertically penetrating through a logging axis, a mounting plate 102 penetrates through the fixed rotating shaft 101, a lifting groove 116 is formed on an outer surface of the fixed rotating shaft 102, a lifting rack 120 is arranged in the lifting groove 116, a lifting frame 118 is arranged on the mounting plate 102, a lifting gear 121 is arranged on the lifting frame 118, the lifting gear 121 is engaged with the lifting rack 120, a lifting motor 122 is further arranged on the lifting frame 118, and the lifting motor 122 is connected with the lifting gear 121.
In the above structure, the mounting disc 102 is movably disposed on the fixed rotating shaft 101, and the logging detection device 2 is disposed on the mounting disc 102, and the lifting gear 121 is driven to rotate when the lifting motor 122 works, because the lifting gear 121 is engaged with the lifting rack 120, and the lifting rack 120 is vertically disposed, the lifting gear 121 drives the lifting motor 122, the mounting disc 102 and the logging detection device 2 to move in the vertical direction when rotating. When the logging detection device 2 needs to be driven to move downwards from the logging inlet to the detection area before detection starts, the lifting motor 122 is driven to rotate forwards to enable the mounting disc 102 to move downwards, and when the logging detection device 2 needs to be driven to move upwards from the detection area to the logging inlet after detection is finished, the lifting motor 122 is driven to rotate backwards to enable the mounting disc 102 to move upwards.
In order to realize the functions of the second part, as shown in fig. 3 and 4, the detecting and adjusting device 1 of the present invention further includes a driving groove 111 spirally disposed outside the fixed rotating shaft 101 and an adjusting bracket 112 disposed on the mounting plate 102, an adjusting rack 113 is laid in the driving groove 111, an adjusting gear 114 is disposed on the adjusting bracket 112, the adjusting gear 114 is engaged with the adjusting rack 113, an adjusting motor 115 is further disposed on the adjusting bracket 112, and the adjusting motor 115 is connected to the adjusting gear 114.
In the above structure, the mounting disc 102 activity is worn to establish on fixed pivot 101, logging detection device 2 sets up on mounting disc 102 simultaneously, can drive adjusting gear 114 when adjusting motor 115 during operation and rotate, because adjusting gear 114 and the meshing of adjusting rack 113, and the setting of adjusting rack 113 heliciform, so adjusting gear 114 can drive adjusting motor 115 when rotating, mounting disc 102 and logging detection device 2 spiral rotation, under this kind of rotation condition, logging detection device 2's detection position can constantly change. Meanwhile, in order to eliminate the detection gap, the distance between adjacent grooves of the spirally arranged driving groove 111 should be smaller than or equal to the detection height of the logging detection device 2.
It should be noted that the driving slot 111 is located below the lifting slot 116, when the mounting plate 102 is located in the area of the lifting slot 116, the lifting gear 121 drives the mounting plate 102 to move, and when the mounting plate 102 is located in the area of the driving slot 111, the adjusting gear 114 drives the mounting plate 102 to move, in order to prevent the two from interfering with each other, in the present invention, the lever 117 is arranged on the mounting plate 102, the adjusting frame 112 and the lifting frame 118 are respectively arranged at two ends of the lever 117, and meanwhile, the mounting plate 102 is hinged with the control cylinder 119, and the output end of the control cylinder 119 is hinged with the lower end of the lever 117. When the lever 117 is in a vertical state, the adjusting gear 114 and the lifting gear 121 are not in contact with the fixed rotating shaft 101, and the mounting plate 102 cannot be driven to move, and the state of the lever 117 can be changed by controlling the air cylinder 119, so that the distance between the two ends of the lever 117 and the fixed rotating shaft 101 is changed, one of the adjusting gear 114 and the lifting gear 121 is in contact with the fixed rotating shaft 101, and the other is far away from the fixed rotating shaft 101.
It should be further noted that, when the mounting plate 102 is located in the area where the lifting slot 116 is located, the control cylinder 119 extends to enable the lifting gear 121 to approach the fixed rotating shaft 101 to engage with the lifting rack 120, the adjusting gear 114 is far away from the fixed rotating shaft 101 to disengage from the adjusting rack 113, so as to drive the mounting plate 102 to move vertically, and when the mounting plate 102 is located in the area where the driving slot 111 is located, the control cylinder 119 retracts to enable the adjusting gear 114 to approach the fixed rotating shaft 101 to engage with the adjusting rack 113, and the lifting gear 121 is far away from the fixed rotating shaft 101 to disengage from the lifting rack 120, so as to drive the mounting plate 102 to rotate.
In order to realize the functions in step 200 of the logging identification method, a mounting frame 103 is radially arranged on the outer side of the mounting disc 102, an obstacle clearing frame 105 is arranged on the mounting frame 103, an obstacle clearing roller 106 and a clearing motor 107 are arranged on the obstacle clearing frame 105, and the clearing motor 107 is connected with the obstacle clearing roller 106.
As shown in fig. 1 and fig. 2, in the present invention, an adjustable fixing frame 3 is further disposed on the mounting disc 102, a fixing plate 110 is disposed at a front end of the adjustable fixing frame 3, one surface of the fixing plate 110 faces a well wall, and the surface is provided with a well logging detection device 2, the adjustable fixing frame 3 includes a fixing cylinder 301 fixedly connected to the mounting disc 102, the fixing cylinder 301 is disposed along a radial direction of the mounting disc 102, an adjusting rod 302 is disposed in the fixing cylinder 301 in a penetrating manner, the fixing plate 110 is disposed at a tail end of the adjusting rod 302, a top-extending cylinder 303 is disposed in the fixing cylinder 301, and an output end of the top-extending cylinder 303 is connected to the adjusting rod 302. According to the invention, the adjustable support 3 is arranged, the position of the logging detection device 2 can be changed through the jacking cylinder 303, and after the adjustable support reaches the detection position, the logging detection device 2 is pushed to move towards the well wall through the jacking cylinder 303, so that the logging detection device 2 is tightly attached to the well wall.
Set up obstacle clearing roller 106 in the above-mentioned explanation, when obstacle clearing roller 106 and wall of a well contact and obstacle clearing roller 106 rotate, obstacle clearing roller 106 will polish the wall of a well and make it level and smooth, and logging detection device 2 sets up the rear at obstacle clearing roller 106, polish the back of the wall of a well when obstacle clearing roller 106, logging detection device 2 just can follow the rotation, thereby the wall of a well that logging detection device 2 contacted is the smooth wall of a well, guarantee that logging detection device 2 can closely laminate with the wall of a well, and can avoid logging detection device 2 and the barrier collision on the wall of a well, protection logging detection device 2.
It should be noted that, when the obstacle clearing roller 106 is used for polishing the well wall, a reaction force is applied to the obstacle clearing roller 106 by the well wall, so that the detection adjusting device 1 shakes, in order to eliminate the shaking phenomenon and improve the stability of the detection adjusting device 1, three mounting frames 103 are arranged in the invention, the three mounting frames 103 are uniformly arranged at intervals, the obstacle clearing roller 106 is arranged on one mounting frame 103, the other two mounting frames 103 are provided with supporting rollers 109 through supporting frames 108, the supporting rollers 109 and the obstacle clearing roller 106 form a triangular structure in space, and when the supporting rollers and the obstacle clearing roller 106 are in contact with the well wall, the stability of the detection adjusting device 1 can be improved.
It should be noted that the extending cylinder 104 is disposed between the mounting frame 103 and the obstacle removing frame 105, and the extending cylinder 104 is disposed between the mounting frame 103 and the supporting frame 108, so that the positions of the obstacle removing roller 106 and the supporting roller 109 can be changed by the extending cylinder 104, and the obstacle removing roller 106 and the supporting roller 109 can be retracted by the extending cylinder 104 when the wall of the well is not required to be polished. Meanwhile, the adjusting range of the detection adjusting device 1 can be changed by extending the air cylinder 104, so that the detection adjusting device can be used in logging with a certain range of sizes.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. An identification device for the exploration logging of tuff hydrocarbon source rocks is characterized in that: including detecting adjusting device (1), it includes vertical fixed rotating shaft (101) of wearing to establish on the logging axis to detect adjusting device (1), wear to be equipped with mounting disc (102) on fixed rotating shaft (101), the outside of mounting disc (102) radially is provided with three mounting bracket (103), be provided with on mounting bracket (103) and stretch out cylinder (104), one of them the output that stretches out cylinder (104) be connected with obstacle clearance frame (105), be provided with obstacle clearance roller (106) and clearing motor (107) on obstacle clearance frame (105), clearing motor (107) link to each other with obstacle clearance roller (106), two in addition the output that stretches out cylinder (104) on be provided with support frame (108), be provided with backing roll (109) on support frame (108).
2. An identification device for tuff hydrocarbon source rock exploration logging according to claim 1, characterized in that: still be provided with adjustable mount (3) on mounting disc (102), the front end of adjustable mount (3) is provided with fixed plate (110), the one side of fixed plate (110) is just facing the wall of a well, and this face installs well logging detection device (2), adjustable mount (3) are including fixed solid fixed cylinder (301) that link to each other with mounting disc (102), gu fixed cylinder (301) radially set up along mounting disc (102), wear to be equipped with in gu fixed cylinder (301) and adjust pole (302), fixed plate (110) set up the end at regulation pole (302), gu be provided with the top in fixed cylinder (301) and stretch cylinder (303), the output that the cylinder (303) was stretched on the top links to each other with regulation pole (302).
3. An identification device for tuff hydrocarbon source rock exploration logging according to claim 1, characterized in that: detect adjusting device (1) and still include that the heliciform sets up at fixed pivot (101) outside drive groove (111) and adjustment bracket (112) of setting on mounting disc (102), regulation rack (113) have been laid in drive groove (111), be provided with adjusting gear (114) on adjustment bracket (112), adjusting gear (114) and regulation rack (113) meshing, still be provided with adjusting motor (115) on adjustment bracket (112), adjusting motor (115) link to each other with adjusting gear (114).
4. An identification device for tuff hydrocarbon source rock exploration logging according to claim 3, characterised in that: the outer surface of fixed rotating shaft (101) still is provided with lift groove (116), lift groove (116) are located the top of drive groove (111), be provided with lever (117) on mounting disc (102), adjusting bracket (112) set up the wherein one end in lever (117), the other end of lever (117) then is provided with crane (118), the articulated control cylinder (119) that is provided with on mounting disc (102), the output of control cylinder (119) is articulated with the lower extreme of lever (117).
5. An identification device for tuff hydrocarbon source rock exploration logging according to claim 4, characterized in that: the lifting mechanism is characterized in that a lifting rack (120) is arranged in the lifting groove (116), a lifting gear (121) is arranged on the lifting frame (118), the lifting gear (121) is meshed with the lifting rack (120), a lifting motor (122) is further arranged on the lifting frame (118), and the lifting motor (122) is connected with the lifting gear (121).
6. An identification device for tuff hydrocarbon source rock exploration logging according to claim 2, characterized in that: the logging detection device (2) comprises a transmitting polar plate (201), a receiving polar plate (202), a transmitting frequency controller (203) and a processor (204), wherein the transmitting frequency controller (203) is electrically connected with the processor (204) and the transmitting polar plate (201) respectively, and the transmitting frequency controller (203) is used for generating transmitting current corresponding to the transmitting polar plate (201) and triggering the transmitting polar plate (201) to transmit the corresponding transmitting current under the control of the processor (204).
7. An identification device for tuff hydrocarbon source rock exploration logging according to claim 6, characterised in that: the processor (204) is electrically connected with the transmitting plate (201) and the receiving plate (202), and the processor (204) is used for acquiring the transmitting current of the transmitting plate (201) and acquiring the voltage signal of the receiving plate (202); and acquiring corresponding resistivity according to the transmitting current of the transmitting polar plate (201) and the voltage signal of the receiving polar plate (202), and then sending the resistivity to a ground server so that the ground server can acquire data of the stratum in the well according to the resistivity.
8. An identification device for tuff hydrocarbon source rock exploration logging according to claim 7, characterized in that: the processor (204) comprises an acquisition module (205), a processing module (206) and a bus module (207), wherein the acquisition module (205) is electrically connected with the transmitting plate (201) and the receiving plate (202) respectively, the acquisition module (205) is used for acquiring the transmitting current of the transmitting plate (201) and acquiring the voltage signal of the receiving plate (202), and the processing module (206) is used for performing inner product processing on the voltage signal received from the receiving plate (202) and two preset orthogonal signals to acquire the target voltage of the receiving plate (202); the processing module (206) is further configured to obtain a corresponding resistivity according to the transmission current of the transmitting pad (201) and the target voltage of the receiving pad (202); the bus module (207) is electrically connected with the processing module (206) and the ground server respectively and used for transmitting the resistivity to the ground server.
9. An identification method based on the identification device of claim 1, characterized by comprising the following steps:
step 100, building a well logging, and placing a detection device into the well logging;
step 200, polishing the well wall of the well logging, removing obstacles and flattening the well wall;
step 300, pushing the detection device to enable a detection port of the detection device to approach to and finally cling to the well wall, and acquiring data of a stratum in the well;
step 400, adjusting the position and the angle of the detection device, changing the detection position and the angle of the detection device, and acquiring data of different stratums in the well until areas needing to be detected are detected;
and 500, taking out the logging detection device.
10. The method for identifying according to claim 9, wherein in the step 300, the detecting device obtains the data of the stratum in the well by a specific process of:
301, acquiring emission current of an emission polar plate;
step 302, acquiring a voltage signal of a receiving polar plate;
303, acquiring corresponding resistivity according to the transmitting current of the transmitting polar plate and the voltage signal of the receiving polar plate;
and step 304, sending the resistivity to a ground server so that the ground server can obtain data of the stratum in the well according to each resistivity.
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| CN112922583A (en) * | 2021-03-01 | 2021-06-08 | 李鹏涛 | Logging device for well wall scanning imaging analysis and logging method thereof |
| CN113027341B (en) * | 2021-04-12 | 2022-04-05 | 西安石油大学 | Adjustable screw anti-drag tool for coiled tubing drilling and adjusting method |
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