CN116084912A - Signal calibration device for multi-depth logging instrument - Google Patents
Signal calibration device for multi-depth logging instrument Download PDFInfo
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- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention relates to the technical field of petroleum engineering equipment development, in particular to a signal calibration device of a multi-depth logging instrument. According to the invention, the non-magnetic non-conductive glass fiber reinforced plastic material is adopted, so that longitudinal and radial layering is realized, the layered stratum and mud invasion environment can be simulated, a stable and diversified test environment is provided for new instrument research and development, accurate manual control of experimental parameters is realized, an experimental model is more flexible, experimental result evaluation is finer, and a powerful guarantee is provided for research and development of new generation high-level multi-depth resistivity logging instruments.
Description
Technical Field
The invention relates to the technical field of petroleum engineering equipment development, in particular to a signal calibration device of a multi-depth logging instrument.
Background
In recent years, along with the development of petroleum industry and the progress of exploration and development technology, more and more advanced instruments are put into use for solving the problems of great exploration and development difficulty and high technical level of oil and gas reservoir projects. The logging while drilling tool is widely applied to complex process wells such as high-inclination wells, horizontal wells and the like due to the characteristics of short drilling time, high logging precision and high timeliness. With the development of oil fields, the upgrading and reconstruction of related logging equipment and the development of new instruments are very important and urgent in order to cope with the redevelopment of logging environments, old oil fields, thin oil layers and broken formations in areas with complex structures. The development of the novel logging instrument is focused on in the industry, the detection performance, the measurement precision and the influence degree of environmental factors on the measurement result of the novel logging instrument are key parameters for evaluating the quality and success/failure of the novel tool, and therefore, the design of a device for detecting and calibrating the logging instrument signals is very important.
The multi-depth logging instrument signal calibration device is a device for detecting and evaluating the measurement precision and resistivity calibration method of an electrical logging instrument and providing technical parameters and measurement signal conversion assistance, and can be applied to calibration and calibration of measurement signals of conventional electromagnetic wave resistivity logging instruments while drilling, azimuth edge-detecting logging tools and induction logging tools. Compared with the traditional salt bucket experiment and lake water experiment, the device can provide a more stable experimental environment, can quantify experimental parameters and technical indexes, flexibly preset an experimental model according to experimental purposes, can simulate well logging response under various conditions such as well bore environment, invasion environment, stratum electrical layering and the like, and can be used for obtaining important parameters such as instrument measurement precision evaluation, instrument detection characteristic investigation, instrument environment influence rule investigation, instrument scale/calibration parameter measurement, environment correction coefficient determination and the like.
Disclosure of Invention
The invention provides a signal calibration device of a multi-depth logging instrument, which overcomes the defects of the prior art and can effectively solve the problems of uncertainty and irreconcilable experimental parameters in the existing traditional natural environment experimental field.
The technical scheme of the invention is realized by the following measures: the utility model provides a many degree of depth logging instrument signal calibration device, including salt solution allotment jar and glass steel scale experimental system, glass steel scale experimental system includes the jar body, layered partition board, invade and take baffle and drop tube, the internal horizontal layering baffle that is provided with of jar can divide into upper region, middle layer region and lower floor region with the jar body, vertically be provided with between the layering baffle and can divide into the annular invasion area baffle of inner chamber and outer cabin with middle layer region, the cavity between the roof of upper region layering baffle and jar body forms the upper chamber, the cavity between the diapire of lower floor region layering baffle and jar body forms the lower chamber, the roof and the diapire central authorities of jar body and layering baffle central authorities all are provided with the centre bore that corresponds from top to bottom, the downtube that runs through whole jar body and can go deep into underground is embedded in the centre bore, the first water inlet of saline solution allotment jar upper portion is fixed to be linked together and is had the water inlet pipeline, the first delivery port of saline solution allotment jar bottom is fixed to be linked together and is had the drain line, be provided with first water inlet on the jar body of upper portion in upper cabin left side, be provided with upper water supply pipeline in fixed intercommunication between first water inlet and the second delivery port of saline solution allotment jar bottom, be provided with first delivery port on the jar body of upper cabin right lower part, be provided with upper circulating water return line in fixed intercommunication between first delivery port and the saline solution allotment jar upper portion second water inlet, saline solution allotment jar top is provided with the opening that can add solid salt granule, be provided with the level gauge in the saline solution allotment jar, the inner cabin, the outer cabin, upper cabin and lower outer wall upside of cabin all are provided with the overflow mouth.
The following are further optimizations and/or improvements to the above-described inventive solution:
the inner cabin, the upper cabin and the lower cabin are all columnar, the outer cabin is annular, and the inner cabin, the outer cabin, the upper cabin and the lower cabin are not communicated with each other.
The tank body at the left upper part of the outer cabin is provided with a second water inlet, a middle layer water supply pipeline is fixedly communicated between the second water inlet and an upper layer water supply pipeline, the tank body at the right lower part of the outer cabin is provided with a third water outlet, a middle layer circulating water return pipeline is fixedly communicated between the upper layer circulating water supply pipeline and the third water outlet, an immersed band baffle at the left upper part of the inner cabin is provided with a third water inlet, an immersed layer water supply pipeline is fixedly communicated between the upper layer water supply pipeline and a saline solution preparing tank, a fifth water outlet is arranged on a layered baffle at the bottom of the inner cabin, an immersed layer circulating water return pipeline is fixedly communicated between the middle layer circulating water return pipeline and the saline solution preparing tank, a fourth water inlet is arranged on the tank body at the left upper part of the lower cabin, a lower layer water supply pipeline is fixedly communicated between the immersed layer water supply pipeline and the saline solution preparing tank, a seventh water outlet is arranged on the tank body at the right lower part of the lower cabin, and the upper layer circulating water return pipeline is fixedly communicated between the immersed layer circulating water return pipeline and the saline solution preparing tank.
The tank body at the lower part of the first water outlet is provided with a second water outlet, an upper circulating backwater parallel pipeline is communicated between the second water outlet and an upper circulating backwater pipeline, the tank body at the lower part of the third water outlet is provided with a fourth water outlet, an upper circulating backwater parallel pipeline is fixedly communicated between the middle circulating backwater pipeline and the fourth water outlet, a layered partition plate at the left side of the fifth water outlet is provided with a sixth water outlet, an invasive layer circulating backwater parallel pipeline is fixedly communicated between the invasive layer circulating backwater pipeline and the saline solution preparing tank, an eighth water outlet is arranged on the tank body at the lower part of the seventh water outlet, and a lower circulating backwater parallel pipeline is fixedly communicated between the upper circulating backwater pipeline and the eighth water outlet.
The device further comprises a water supply pump and a drainage pump, wherein the water supply pump is fixedly arranged on an upper water supply pipeline between a lower water supply pipeline and the saline solution preparing tank, and the drainage pump is fixedly arranged on an upper circulating water return pipeline between a lower circulating water return parallel pipeline and the saline solution preparing tank.
The water valves are fixedly arranged on the upper layer circulating water return pipeline between the upper layer circulating water return parallel pipeline, the middle layer circulating water return parallel pipeline, the invasion layer circulating water return parallel pipeline, the lower layer circulating water return parallel pipeline, the water inlet pipeline, the drainage pipeline, the water supply pump and the saline solution preparing tank.
The tank body, the layered partition plate, the invasive belt partition plate and the downward pipe are made of non-magnetic non-conductive glass fiber reinforced plastic materials, and the upper layer water supply pipeline, the middle layer water supply pipeline, the invasive layer water supply pipeline, the lower layer water supply pipeline, the upper layer circulating water return parallel pipeline, the middle layer circulating water return parallel pipeline, the invasive layer circulating water return parallel pipeline, the lower layer circulating water return parallel pipeline and water valves on the pipelines are all made of non-magnetic non-conductive materials.
The bottom of the glass fiber reinforced plastic scale experiment system is arranged on a concrete base, and glass fiber reinforced plastic is arranged in the concrete.
According to the invention, the non-magnetic non-conductive glass fiber reinforced plastic material is adopted, so that longitudinal and radial layering is realized, the layered stratum and mud invasion environment can be simulated, a stable and diversified test environment is provided for new instrument research and development, accurate manual control of experimental parameters is realized, an experimental model is more flexible, experimental result evaluation is finer, and a powerful guarantee is provided for research and development of new generation high-level multi-depth resistivity logging instruments.
Drawings
Fig. 1 is a schematic structural diagram of a process flow in embodiment 1 of the present invention.
The codes in the drawings are respectively: 1 is a brine solution blending tank, 2 is a tank body, 3 is a layered partition plate, 4 is an intrusion belt partition plate, 5 is a down pipe, 6 is an inner cabin, 7 is an outer cabin, 8 is an upper cabin, 9 is a lower cabin, 10 is a water supply pump, 11 is a water valve, 12 is a water inlet pipeline, 13 is a water discharge pipeline, 14 is an upper layer water supply pipeline, 15 is an upper layer circulating water return pipeline, 16 is a drainage pump, 17 is a middle layer water supply pipeline, 18 is a middle layer circulating water return pipeline, 19 is an intrusion layer water supply pipeline, 20 is an intrusion layer circulating water return pipeline, 21 is a lower layer water supply pipeline, 22 is a lower layer circulating water return pipeline, 23 is an upper layer circulating water return parallel pipeline, 24 is a middle layer circulating water return parallel pipeline, 25 is an intrusion layer circulating water return parallel pipeline, 26 is a lower layer circulating water return parallel pipeline, and 27 is a concrete base.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention. In the invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention is further described below with reference to examples:
example 1: as shown in figure 1, the multi-depth logging instrument signal calibration device comprises a saline solution blending tank 1 and a glass fiber reinforced plastic scale experiment system, wherein the glass fiber reinforced plastic scale experiment system comprises a tank body 2, a layered partition plate 3, an invasive belt partition plate 4 and a down tube 5, the tank body 2 is transversely provided with a device capable of dividing the tank body 2 into upper layer areas, the upper tank body 2 is provided with a first water inlet, a first water outlet is fixedly communicated with a water inlet line 12 at the upper part of the brine solution preparing tank 1, a first water inlet is arranged on the tank body 2 at the left upper part of the upper tank body 8, an upper water supply line 14 is fixedly communicated between the first water inlet and the second water outlet at the bottom of the brine solution preparing tank 1, a central hole corresponding to the center of the upper tank body 2 and the center of the lower tank body 3 is formed in the center of the upper wall and the center of the lower wall of the tank body 2, a lower discharge pipe 5 penetrating through the whole tank body 2 and penetrating deep 5m to 10m is embedded in the central hole, a first water inlet at the upper part of the brine solution preparing tank 1 is fixedly communicated with a water inlet line 12, a first water outlet at the bottom of the brine solution preparing tank 1 is fixedly communicated with a water outlet line 13 at the left upper part of the upper tank body 2, an upper water supply line 14 is fixedly communicated with the right lower part of the upper tank body 2 of the upper tank body 8, a first water outlet is arranged on the tank body 2 at the right lower part of the upper tank body 2, a solid water inlet is arranged in the upper tank body 9 is fixedly communicated with an overflow meter, and the upper tank body 1 is provided with an upper water inlet 15 at the top of the upper tank body 1, and the upper tank body is provided with an open-top water tank chamber is provided with a solid particle tank chamber 9, and the upper tank is provided with an open top tank chamber is provided with an inside tank 9.
According to the invention, a non-magnetic non-conductive glass fiber reinforced plastic material is adopted, a multi-depth resistivity logging tool experimental device is formed through the saline solution blending tank 1 and the glass fiber reinforced plastic scale experimental system, the experimental main body adopts a cabin segmentation main body tank structure, longitudinal and radial layering is realized, a layered stratum and mud invasion environment can be simulated, a stable and diversified testing environment is provided for new instrument research and development, accurate manual control of experimental parameters can be realized through quantitative control of the concentration of the blending tank solution, uncertainty and experimental parameters in a traditional natural environment experimental field are avoided, the experimental parameters cannot be modified, the experimental model is more flexible, experimental result evaluation is finer, and powerful guarantee is provided for research and development of a new generation of high-level multi-depth resistivity logging instrument.
According to the invention, the opening capable of adding solid salt particles is arranged, so that accurate preparation of the brine solution with the specified concentration can be conveniently carried out.
In actual operation, the salt water solution preparing tank 1 can be made of glass fiber reinforced plastic, and the diameter of the tank body 2 can be 4m and highThe degree can be 4m and the volume can be about 48m 3 The water depth measuring and calibrating ruler can be used for accurately calculating the residual water volume in the tank body 2 through the water depth measuring and calibrating ruler;
the tank body 2 in the glass fiber reinforced plastic scale experiment system can be designed according to the following requirements: the diameter is 4m, the height is 9m, the tank body 2 is arranged on a glass reinforced plastic concrete horizontal bearing table, three sections are averagely divided by using a layered partition plate 3 on the height, each section has the length of 3m, an annular invasive belt partition plate 4 with the diameter of 1.2m is arranged in the middle section, and the middle layer is divided into two parts; the thickness of the layered separator 3 and the annular intrusion belt separator 4 is 10mm;
the down pipe 5 penetrates through the whole tank body 2 and can penetrate deep into the underground 5.5m, the experimental requirements of logging instruments with different lengths can be met, the inner diameter (diameter) of the down pipe 5 is 250mm, the down pipe is suitable for the size of main flow logging instruments in the market, and air, fresh water and NaCl solutions are filled in the down pipe respectively and used for simulating the well hole environments in different states.
Example 2: as shown in fig. 1, as an optimization of the above embodiment, the inner chamber 6, the upper chamber 8 and the lower chamber 9 are all columnar, the outer chamber 7 is annular, and the inner chamber 6, the outer chamber 7, the upper chamber 8 and the lower chamber 9 are not communicated with each other.
Example 3: as shown in fig. 1, a second water inlet is formed in the tank body 2 at the left upper part of the outer chamber 7, a middle water supply pipeline 17 is fixedly communicated with the upper water supply pipeline 14, a third water outlet is formed in the tank body 2 at the right lower part of the outer chamber 7, a middle water return pipeline 18 is fixedly communicated with the third water outlet, a third water inlet is formed in the invaded zone partition plate 4 at the left upper part of the inner chamber 6, an invaded layer water supply pipeline 19 is fixedly communicated between the upper water supply pipeline 14 and the third water inlet of the middle water supply pipeline 17 and the saline solution preparing tank 1, a fifth water outlet is formed in the layered partition plate 3 at the bottom of the inner chamber 6, an invaded layer water return pipeline 20 is fixedly communicated between the upper water return pipeline 15 and the fifth water outlet of the inner chamber 6, a fourth water inlet is formed in the tank body 2 at the left upper part of the lower chamber 9, a seventh water return pipeline 20 is fixedly communicated between the upper water return pipeline 14 and the upper water return pipeline 2 of the lower chamber 9 and the saline solution preparing tank 1, and a seventh water return pipeline 20 is fixedly communicated between the upper water return pipeline 2 of the lower chamber 9 and the upper water return pipeline 1.
Example 4: as shown in fig. 1, a second water outlet is arranged on the tank body 2 at the lower part of the first water outlet, an upper circulating backwater parallel pipeline 23 is communicated between the second water outlet and the upper circulating backwater pipeline 15, a fourth water outlet is arranged on the tank body 2 at the lower part of the third water outlet, a middle circulating backwater parallel pipeline 24 is fixedly communicated between the upper circulating backwater pipeline 15 and the fourth water outlet between the middle circulating backwater pipeline 18 and the saline solution preparing tank 1, a sixth water outlet is arranged on the layered partition plate 3 at the left side of the fifth water outlet, an invasive layer circulating backwater parallel pipeline 25 is fixedly communicated between the invasive layer circulating backwater pipeline 20 and the upper circulating backwater pipeline 15 and the sixth water outlet between the saline solution preparing tank 1, an eighth water outlet is arranged on the tank body 2 at the lower part of the seventh water outlet, and a lower circulating backwater parallel pipeline 26 is fixedly communicated between the upper circulating backwater pipeline 15 and the eighth water outlet between the lower circulating backwater pipeline 22 and the saline solution preparing tank 1.
Example 5: as shown in fig. 1, the utility model further comprises a water supply pump 10 and a drainage pump 16, wherein the water supply pump 10 is fixedly arranged on the upper water supply pipeline 14 between the lower water supply pipeline 21 and the saline solution preparing tank 1, and the drainage pump 16 is fixedly arranged on the upper circulating water return pipeline 15 between the lower circulating water return parallel pipeline 26 and the saline solution preparing tank 1.
According to the requirement, the water supply pump 10 pumps the water of the saline solution blending tank 1 into the glass fiber reinforced plastic scale experiment system through a water pipe and a valve control, the water pump 16 pumps the water in the glass fiber reinforced plastic scale experiment system into the blending tank, and the water supply pump 16 and the water pump 16 work cooperatively to realize the water circulation in each cabin in the blending tank and the scale experiment system.
Example 6: as shown in fig. 1, the water valves 11 are fixedly installed on the upper water supply line 14, the middle water supply line 17, the invaded layer water supply line 19, the lower water supply line 21, the upper circulating water return line 15, the upper circulating water return parallel line 23, the middle circulating water return line 18, the middle circulating water return parallel line 24, the invaded layer circulating water return line 20, the invaded layer circulating water return parallel line 25, the lower circulating water return line 22, the lower circulating water return parallel line 26, the water inlet line 12, the water drain line 13, the upper circulating water return line 15 between the water supply pump 10 and the saline solution preparing tank 1 between the middle water supply line 17 and the saline solution preparing tank 1.
According to the invention, each cabin water inlet and outlet pipe of the glass fiber reinforced plastic scale experiment system is made of non-magnetic non-conductive materials, and independent valves are arranged on pipelines, so that the valves are ensured to be completely closed in the experiment process, and the liquid loss in the cabin in the experiment process is prevented.
Example 7: as shown in fig. 1, the tank body 2, the layered partition plate 3, the invaded zone partition plate 4 and the down pipe 5 are all made of non-magnetic non-conductive glass fiber reinforced plastic, and the upper layer water supply pipeline 14, the middle layer water supply pipeline 17, the invaded layer water supply pipeline 19, the lower layer water supply pipeline 21, the upper layer circulating water return pipeline 15, the upper layer circulating water return parallel pipeline 23, the middle layer circulating water return pipeline 18, the middle layer circulating water return parallel pipeline 24, the invaded layer circulating water return pipeline 20, the invaded layer circulating water return parallel pipeline 25, the lower layer circulating water return pipeline 22, the lower layer circulating water return parallel pipeline 26 and the water valves 11 on the pipelines are all made of non-magnetic non-conductive materials.
According to the requirements, the saline solution preparing tank 1 is communicated with fluid in the glass fiber reinforced plastic scale experiment system through a nonmagnetic non-conductive material pipeline, fluid exchange is realized through a pump, the cabin of each tank body 2 is provided with a pipeline which is independently used for entering and exiting the water tank and is provided with a water valve 11 which is used for entering and exiting the water tank, water is injected or discharged into each cabin through the water valve 11 switch, and the water supply pump 10, the drainage pump 16 and the water valve 11 are opened and closed to cooperate, so that the exchange and the cyclic utilization of the saline solution in the tank body 2 are realized.
Example 8: as shown in fig. 1, the bottom of the glass fiber reinforced plastic scale experiment system is arranged on a concrete base 27, and glass fiber reinforced plastic is arranged in the concrete.
Example 9: as shown in fig. 1, the using method of the multi-depth logging instrument signal calibration device is carried out according to the following method: firstly, preparing NaCl solution with required quantity and concentration in a salt water solution preparing tank 1, and pumping the prepared NaCl solution into a lower cabin 9 of a glass fiber reinforced plastic scale experiment system; secondly, sampling at the overflow port of the lower cabin 9, and measuring the resistivity of the fluid in the lower cabin 9; thirdly, preparing NaCl solution with required quantity and required concentration in a salt water solution preparing tank 1, and pumping the prepared NaCl solution into an outer cabin 7 of the glass fiber reinforced plastic scale experiment system; step four, sampling at the overflow port of the outer cabin 7, and measuring the resistivity of the fluid in the outer cabin 7; fifthly, preparing NaCl solution with required quantity and concentration in a salt water solution preparing tank 1, and pumping the prepared NaCl solution into an inner cabin 6 of a glass fiber reinforced plastic scale experiment system; step six, sampling the overflow port of the inner cabin 6, and measuring the resistivity of the fluid in the inner cabin 6; seventh, preparing NaCl solution with required quantity and concentration in a salt water solution preparing tank 1, and pumping the prepared NaCl solution into an inner upper cabin 8 of a glass fiber reinforced plastic scale experiment system; eighth step, sampling the overflow port of the upper cabin 8, measuring the resistivity of the fluid in the upper cabin 8, and completing the establishment of an experimental model; ninth, placing the multi-depth electromagnetic wave resistivity instrument from the lower pipe 5 in the center of the tank body 2, wherein the multi-depth electromagnetic wave resistivity instrument is completely positioned below the experimental calibration tank body 2; starting a multi-depth electromagnetic wave resistivity instrument, slowly lifting the multi-depth electromagnetic wave resistivity instrument at a speed of 0.1m/s, and recording a measuring signal at intervals of 1 s; eleventh step, stopping measurement when the multi-depth electromagnetic wave resistivity instrument is completely lifted to the top of the scale experiment system, withdrawing the multi-depth electromagnetic wave resistivity instrument and downloading logging signals recorded in the measurement process; twelfth, drawing according to the logging signals, comparing with analog signals under the same model condition, and verifying measurement accuracy; and thirteenth step, the NaCl solution in the lower cabin 9, the outer cabin 7, the inner cabin 6 and the upper cabin 8 in the glass fiber reinforced plastic scale experiment system is emptied and refluxed to the saline solution blending tank 1 in sequence by utilizing the drainage pump 16 and then discharged into the sewage treatment system, and the tank body 2 is scrubbed by utilizing clear water to finish a calibration experiment.
Example 10: as shown in fig. 1, as the optimization of the above embodiment, in the use process, the concentration of the NaCl solution prepared in the upper cabin 8 and the lower cabin 9 is 5% to 9%, the concentration of the NaCl solution in the inner cabin 6 is 10% to 20%, the concentration of the NaCl solution in the outer cabin 7 is 0% to 2%, and the glass fiber reinforced plastic scale experiment system square circle 10m space can not have magnetic and electric conductive objects.
According to the invention, naCl solution (3%) with the same concentration can be filled in the upper cabin and the lower cabin according to the requirement, a symmetrical stratum electrical model is simulated, a high-concentration NaCl solution (15%) is filled in the inner cabin of the middle layer, fresh water (tap water) is filled in the outer cabin, and a stratum resistivity model under the condition of low-resistance mud invasion is simulated.
Example 11: as shown in fig. 1, the using method of the multi-depth logging instrument signal calibration device is carried out according to the following method: first, 150m of the mixture is prepared in a salt water solution preparing tank 1 3 The NaCl solution with the concentration of 9.6 percent is pumped into the lower cabin 9 of the glass fiber reinforced plastic scale experiment system; secondly, sampling at the overflow port of the lower cabin 9, and measuring the resistivity of the fluid in the lower cabin 9; third, 146m of the mixture is prepared in a salt water solution preparation tank 1 3 The NaCl solution with the concentration of 1.6 percent is pumped into the outer cabin 7 of the glass fiber reinforced plastic scale experiment system; step four, sampling at the overflow port of the outer cabin 7, and measuring the resistivity of the fluid in the outer cabin 7; fifth, 5m of the mixture is prepared in a salt water solution preparation tank 1 3 Pumping the prepared NaCl solution into an inner cabin 6 of a glass fiber reinforced plastic scale experiment system by using a NaCl solution with the concentration of 12.3%; step six, sampling the overflow port of the inner cabin 6, and measuring the resistivity of the fluid in the inner cabin 6; seventh, 150m of the mixture is prepared in a salt water solution preparing tank 1 3 The NaCl solution with the concentration of 9.6 percent is pumped into an inner upper cabin 8 of the glass fiber reinforced plastic scale experiment system; eighth step, sampling the overflow port of the upper cabin 8, measuring the resistivity of the fluid in the upper cabin 8, and completing the establishment of an experimental model; ninth, placing the multi-depth electromagnetic wave resistivity instrument from the lower pipe 5 in the center of the tank body 2, wherein the multi-depth electromagnetic wave resistivity instrument is completely positioned below the experimental calibration tank body 2; starting a multi-depth electromagnetic wave resistivity instrument, slowly lifting the multi-depth electromagnetic wave resistivity instrument at a speed of 0.1m/s, and recording a measuring signal at intervals of 1 s; eleventh step, waiting for multiple depth electromagnetic waveStopping measurement when the resistivity instrument is completely lifted to the top of the scale experiment system, withdrawing the multi-depth electromagnetic wave resistivity instrument and downloading logging signals recorded in the measurement process; twelfth, drawing according to the logging signals, comparing with analog signals under the same model condition, and verifying measurement accuracy; and thirteenth step, the NaCl solution in the lower cabin 9, the outer cabin 7, the inner cabin 6 and the upper cabin 8 in the glass fiber reinforced plastic scale experiment system is emptied and refluxed to the saline solution blending tank 1 in sequence by utilizing the drainage pump 16 and then discharged into the sewage treatment system, and the tank body 2 is scrubbed by utilizing clear water to finish a calibration experiment.
Summarizing the experimental modeling procedure of example 9 of the present invention: modeling under the conditions of invasion zone resistivity, undisturbed stratum resistivity, stratum layering and surrounding rock resistivity is fully considered, the model is close to the actual logging situation, the coupling influence of various factors is comprehensively considered, and the precision inspection of the electromagnetic wave resistivity while drilling instrument is simultaneously carried out by multi-angle full parameters, so that the precision inspection is superior to the precision inspection under single environment variables such as air experiment, lake water experiment and the like; meanwhile, the corresponding curve ratio of the measured response and the simulated response can be used as an instrument precision calibration coefficient; the aim of changing the formation resistivity is achieved by changing the concentration of NaCl solution in each cabin, and the accurate and flexible test of the formation model is realized. Therefore, the experimental system can simulate various logging environments, can consider influences of layering, invasion, well holes, surrounding rocks and the like, is an important determination device for research and development of novel tools, and has very important application value.
In conclusion, the invention adopts the non-magnetic non-conductive glass fiber reinforced plastic material, realizes longitudinal and radial layering, can simulate the stratum and mud invasion environment, provides stable and diversified test environments for the research and development of new instruments, realizes the accurate manual control of experimental parameters, ensures that an experimental model is more flexible and experimental result evaluation is finer, and provides powerful guarantee for the research and development of new-generation high-level multi-depth resistivity logging instruments.
The technical characteristics form the embodiment of the invention, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (8)
1. The utility model provides a many degree of depth logging instrument signal calibration device, a serial communication port includes the salt solution allotment jar and glass steel scale experiment system, glass steel scale experiment system includes the jar body, the layering baffle, invade and take the baffle and put down the pipe, the internal horizontal layering baffle that is provided with of jar body and divide into upper strata region, middle level region and lower floor region, vertically be provided with the annular invasion area baffle that can divide into inner chamber and outer cabin with middle level region between the layering baffle, cavity formation upper strata region between the roof of the inner layer interlayer baffle and jar body forms the cavity formation lower cabin between the diapire of layering baffle and the jar body, roof and diapire central authorities of the jar body and layering baffle central authorities all are provided with the central opening that corresponds from top to bottom, the downthehole embedding of central opening has the downpipe that runs through whole jar body and can go deep into underground, first water inlet fixed intercommunication in salt solution allotment jar upper portion has the water inlet line, first delivery port fixed intercommunication in salt solution allotment jar bottom first delivery port, be provided with first water inlet on the jar upper left upper portion, fixed intercommunication between the jar body upper portion of upper left upper portion and outer layer of water inlet, upper portion of the water tank upper portion is provided with the solid, the water inlet, the steady flow meter is provided with the salt solution, the upper end of the upper end portion of the water tank is provided with the salt solution, the upper end of the upper end is provided with the cabin, the upper end of the pipeline, the steady state particle meter is set up.
2. The multi-depth logging instrument signal calibration device according to claim 1, wherein the inner chamber, the upper chamber and the lower chamber are all columnar, the outer chamber is annular, and the inner chamber, the outer chamber, the upper chamber and the lower chamber are not communicated with each other.
3. The multi-depth logging instrument signal calibration device according to claim 2, wherein a second water inlet is formed in a tank body at the left upper part of the outer cabin, a middle layer water supply pipeline is fixedly connected between the second water inlet and an upper layer water supply pipeline, a third water outlet is formed in a tank body at the right lower part of the outer cabin, a middle layer water return pipeline is fixedly connected between the upper layer water supply pipeline and the third water outlet, a third water inlet is formed in an invasive belt partition plate at the left upper part of the inner cabin, an invasive layer water supply pipeline is fixedly connected between the upper layer water supply pipeline and the third water inlet between the middle layer water supply pipeline and the saline solution preparation tank, a fifth water outlet is formed in a layered partition plate at the bottom of the inner cabin, an invasive layer water return pipeline is fixedly connected between the upper layer water return pipeline and the fifth water outlet, a fourth water inlet is formed in a tank body at the left upper part of the lower cabin, a seventh water outlet is fixedly connected between the invasive layer water supply pipeline and the fourth water inlet, and a seventh water return pipeline is fixedly connected between the invasive layer water supply pipeline and the saline solution preparation tank, and the seventh water return pipeline is fixedly connected between the invasive layer water supply pipeline and the water return pipeline and the upper layer water circulation tank.
4. The multi-depth logging instrument signal calibration device according to claim 3, wherein a second water outlet is arranged on the tank body at the lower part of the first water outlet, an upper circulating backwater parallel pipeline is communicated between the second water outlet and the upper circulating backwater pipeline, a fourth water outlet is arranged on the tank body at the lower part of the third water outlet, a middle circulating backwater parallel pipeline is fixedly communicated between the upper circulating backwater pipeline between the middle circulating backwater pipeline and the salt water solution preparing tank and the fourth water outlet, a sixth water outlet is arranged on the layered partition plate at the left side of the fifth water outlet, an invasive layer circulating backwater parallel pipeline is fixedly communicated between the upper circulating backwater pipeline between the invasive layer circulating backwater pipeline and the salt water solution preparing tank and the sixth water outlet, an eighth water outlet is arranged on the tank body at the lower part of the seventh water outlet, and a lower circulating backwater parallel pipeline is fixedly communicated between the upper circulating backwater pipeline between the lower circulating backwater pipeline and the salt water solution preparing tank.
5. The multi-depth logging instrument signal calibration device according to claim 4, further comprising a water supply pump and a drainage pump, wherein the water supply pump is fixedly installed on an upper water supply pipeline between a lower water supply pipeline and the brine solution blending tank, and the drainage pump is fixedly installed on an upper circulating water return pipeline between a lower circulating water return parallel pipeline and the brine solution blending tank.
6. The multi-depth logging instrument signal calibration device according to claim 5, wherein water valves are fixedly installed on the upper water supply pipeline, the middle water supply pipeline, the invaded water supply pipeline, the lower water supply pipeline, the upper circulating water return pipeline between the upper circulating water return parallel pipeline and the brine solution preparing tank, the upper circulating water return parallel pipeline, the middle circulating water return parallel pipeline, the invaded water return parallel pipeline, the lower circulating water return parallel pipeline, the water inlet pipeline, the water drainage pipeline, the upper circulating water return pipeline between the water supply pump and the brine solution preparing tank.
7. The multi-depth logging instrument signal calibration device according to claim 6, wherein the tank, the layered partition, the invaded zone partition and the down pipe are made of non-magnetic non-conductive glass fiber reinforced plastic materials, and the upper water supply pipeline, the middle water supply pipeline, the invaded zone water supply pipeline, the lower water supply pipeline, the upper circulating water return parallel pipeline, the middle circulating water return parallel pipeline, the invaded zone circulating water return parallel pipeline, the lower circulating water return parallel pipeline and the water valves on the pipelines are made of non-magnetic non-conductive materials.
8. The multi-depth logging instrument signal calibration device according to any one of claims 1 to 7, wherein the glass fiber reinforced plastic scale experiment system is arranged on a concrete base, and glass fiber reinforced plastic is arranged in the concrete.
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