45 results about "Oil-based mud" patented technology

A method of removing hydrogen sulfide from a subterranean geological formation includes mixing a zinc-imidazolate material, ZIF-8, in an amount of 0.1 to 2.5 percent by weight with an organic liquid containing one or more unsaturated oils to form a drilling fluid suspension with a pH of 10 or more. The method includes injecting the drilling fluid suspension in the subterranean geological formation, circulating the drilling fluid suspension in the subterranean geological formation to form an oil-based mud, and scavenging hydrogen sulfide from the subterranean geological formation.

The invention relates to the technical field of oil-gas exploration, in particular to a method for measuring the oil content of an oil-based mud polluted rock core (rock debris). The method comprises the following steps: oil-based mud fluorescence quantification, sample pretreatment, ultrasonic oscillation extraction, extraction liquid fluorescence analysis, wellhead oil solvent fluorescence quantification and oil content calculation. The method comprises the following steps: collecting oil-based mud and wellhead oil on an exploration site, treating the oil-based mud and the wellhead oil with pesticide residue-grade dichloromethane, and determining respective fluorescence fingerprint spectrograms and characteristic peaks through three-dimensional fluorescence detection; the method comprises the following steps: grinding a rock core (rock debris) sample to 60-80 meshes, carrying out ultrasonic extraction to obtain an extract, detecting a spectrogram, identifying and deducting an oil-based mud pollution peak, and calculating the oil content by combining the correlation between the fluorescence intensity and concentration of wellhead oil. The method can effectively distinguish the oil-based mud from the oil content of the sample, realizes accurate detection of the oil content of the polluted sample, makes up for insufficient core data, is suitable for evaluation of conventional, unconventional, deep and ultra-deep oil and gas reservoirs, and provides reliable support for oil and gas exploration and the like.

The invention belongs to the technical field of petroleum and natural gas drilling, and discloses a near-bit gamma electromagnetic wave imaging logging instrument with far detection emission and power generation functions, which comprises a drill collar body, a water hole is arranged in the drill collar body along the axial direction, and an emission antenna, a first receiving antenna, a second receiving antenna, a first antenna port and a second antenna port are arranged on the drill collar body; a sealing fastening sleeve, a circuit framework, a lower fluid director and a mud turbine power generation device are arranged in the water hole, the circuit framework is provided with a containing cavity, the middle of the mud turbine power generation device is located in the containing cavity, the lower end of the mud turbine power generation device is connected with the lower fluid director, and an orientation gamma measuring circuit is arranged in the circuit framework. The near-bit lateral resistivity logging instrument has a certain forward probing capability and a certain azimuth electromagnetic wave measuring function, and has larger axial forward probing and radial probing edge distance compared with a near-bit lateral resistivity logging instrument. The method is suitable for oil-based mud and is also suitable for water-based mud.

A method of removing hydrogen sulfide from a subterranean geological formation includes mixing a zinc-imidazolate material, ZIF-8, in an amount of 0.1 to 2.5 percent by weight with an organic liquid containing one or more unsaturated oils to form a drilling fluid suspension with a pH of 10 or more. The method includes injecting the drilling fluid suspension in the subterranean geological formation, circulating the drilling fluid suspension in the subterranean geological formation to form an oil-based mud, and scavenging hydrogen sulfide from the subterranean geological formation.

The invention discloses a cyclone separation unit, which is used for deoiling treatment of rock debris particles of more than 100 microns in oil-based mud, and at least comprises a plurality of material distribution cavities and barrel bodies which are arranged at intervals along the vertical direction; an oil-based mud material inlet and a gas inlet are formed in the top of the uppermost material distribution cavity and are used for receiving rock debris particles which are subjected to vibration screening and heating viscosity reduction treatment and contain the particle size of 100 microns or above and rotational flow driving gas; the multiple hydrocyclones are arranged in a multi-stage series-parallel connection mode; a multi-stage cyclone bin and a double-ring channel are arranged in each cyclone, and airflow carrying rock debris particles sequentially flows downwards in an outer ring of the double-ring channel, flows upwards in an inner ring of the double-ring channel and enters the multi-stage cyclone bin from top to bottom; in the cyclone bin, under the action of cyclone, airflow carries an oil phase removed from the rock debris particles to move upwards and flow out from an overflow port, and the rock debris particles move downwards under the action of gravity and are discharged from an underflow port. The invention further discloses an oil-based mud treatment device and method applying the cyclone separation unit.

The invention relates to the field of resistivity measurement, in particular to a while-drilling resistivity measurement device and a resistivity imaging method. A two-end type shielding electrode structure is adopted, the shielding capacity is optimized through numerical simulation, and the instrument detection depth is increased. The modularized detector can be flexibly installed, can also work independently and is convenient to install and maintain, and the measuring device can measure the formation resistivity and can also obtain the oil-based mud resistivity in real time. The problem that the accuracy of a final result is seriously influenced due to the fact that the oil-based mud resistivity cannot be independently obtained in the prior art is solved.

The utility model relates to the technical field of rotary kilns, in particular to a viscous waste oil-based mud continuous feeding device which comprises a bottom plate, a continuous feeding mechanism is arranged at the top of the bottom plate and comprises a feeding pipe used for feeding, a feeding mechanism is arranged at the top of the bottom plate, and the feeding mechanism comprises a discharging hopper used for discharging. According to the feeding device, a feeding pipe, an auger, a first motor box, a first motor, a feeding box, a motor and other components are included, the motor is started to drive a rotating column and drive a rotating plate to rotate, so that entering materials are discharged downwards in a sectional mode, and the phenomenon of blocking caused by unsmooth feeding is avoided; the feeding pipe is arranged, so that materials entering the feeding pipe are rotationally conveyed, continuous feeding of sticky waste oil-based mud is achieved, and it can be guaranteed that various to-be-treated materials generated in the while-drilling treatment production process in a well site can be continuously and stably fed and continuously produced.

The invention relates to the technical field of rubber core production, in particular to an oil-base-mud-resistant rotary rubber core and a production mold thereof.The oil-base-mud-resistant rotary rubber core comprises an upper mold and a lower mold, a bottom plate is welded to the bottom of an inner cavity of the lower mold, a supporting column is welded to the top of the bottom plate, a top plate is welded to the top of the supporting column, and an air bag is arranged between the bottom plate and the top plate; a shell is welded to the bottom of the lower mold, a first electric push rod is fixedly installed at the bottom of an inner cavity of the shell, an ejector rod is fixedly installed at the top of the first electric push rod, and a sliding block arranged in an inner cavity of the supporting column in a sliding mode is welded to the top of the ejector rod. A plurality of upper pull ropes, a plurality of middle pull ropes and a plurality of lower pull ropes are fixedly mounted on the peripheral wall of the sliding block, and sizing materials on the upper side and the lower side are continuously pushed to reciprocate by means of telescopic operation of the air bag, so that auxiliary materials which are not completely stirred in the sizing materials are stirred for the second time; and the stirring device can be uniformly mixed with the sizing material in the movement process of the sizing material.

According to the drilling fluid magnetic substance removing device, in the device, a first-stage frame is movably arranged on an oil-based mud transition groove, a first-stage roller is rotatably erected on the first-stage frame through a first-stage rotating shaft, the first-stage roller is connected with a first-stage strong magnetic area, a first-stage weak magnetic area and a first-stage non-magnetic area end to end in the circumferential direction, and a second-stage frame is supported on the first-stage frame; the second-stage roller is rotatably erected on the second-stage frame through a second-stage rotating shaft, the second-stage roller is connected with a second-stage strong magnetic area, a second-stage weak magnetic area and a second-stage non-magnetic area end to end in the circumferential direction, and the driving device is arranged at the top of the second-stage frame and is in transmission connection with the second-stage rotating shaft through a second-stage chain wheel transmission assembly; the second-stage rotating shaft is connected with the first-stage rotating shaft through a first-stage chain wheel transmission assembly, the driving device drives the first-stage roller and the second-stage roller to rotate, and when the first-stage weak magnetic area rotates to the highest point, the second-stage strong magnetic area rotates to the lowest point. The device improves the iron removing efficiency.

The present application relates to a kind of mud logging rock chip oil-based mud cleaning device, wherein the filter assembly of circulating filter module is connected with circulating pool on one side, and the first circulating pipeline with vibration screen nozzle and stirring sand nozzle of output end is arranged on the other side, and vibration screen nozzle is arranged above vibration screen;Vibration screen is provided with first output port, and stirring lifting mechanism, rotating frame, spin-drying component and sample cylinder are arranged in the processing cavity of processing module, and the first output port and stirring sand nozzle are all aligned with sample cylinder located in material receiving station;After sample cylinder receives material, the stirring shaft of stirring lifting mechanism is lowered into the sample cylinder;The upper pressing mechanism of spin-drying component includes rotating disc and pressing disc connected by spring, and after lower support rotating disc rises, it is held sample cylinder in cooperation with pressing disc, then pressing disc is driven to rotate by rotating disc;Vibration screen and processing cavity are all communicated with rotating screen, and rotating screen outlet is arranged above circulating pool.The present application realizes oil-based mud cleaning and recycling of cleaning fluid.

The present invention provides a method for preparing rock cuttings for removing oil-based mud contamination. The method comprises cleaning and drying a sample of oil-based mud-contaminated rock cuttings, performing trace element determination on the cleaned and dried sample; physically grinding the cleaned and dried sample, and performing trace element determination on the ground rock cutting particles and rock cutting powder; and comparing and analyzing the multiple trace element determinations to analyze the degree of oil-based mud contamination in the rock cuttings and the effectiveness of removing the oil-based mud-contaminated rock cuttings. The present invention physically grinds mudstone rock cuttings contaminated by oil-based mud without using an organic solvent, gradually removing the oil-based mud adhering to the surface of the rock cuttings. This method preserves the original geochemical characteristics of the rock cuttings, accurately determines the degree of oil-based mud contamination, and completely removes the effects of organic mud contamination, providing accurate data support and technical guidance for various geochemical analysis tests and offshore oil and gas exploration.

The invention discloses a T2 spectrum form correction method, device and equipment in a tight gas reservoir oil-based mud invasion state and a storage medium, and relates to the technical field of logging data processing in oil-gas exploration. The method comprises the following steps: firstly, acquiring T2 spectrum data of to-be-corrected oil-based mud in a research area in an invasion state, secondly, decomposing the T2 spectrum data by utilizing a T2 spectrum decomposition method combining wavelet transform and Gaussian fitting, and determining a T2 spectrum correction equation by utilizing a fluid replacement method based on a decomposition result; and correcting T2 spectrum data to be corrected in an oil-based mud invasion state by using the obtained T2 spectrum correction equation. According to the method, many problems brought to NMR logging fluid identification after the oil-based mud invades the stratum can be solved more comprehensively and effectively, and more reliable and accurate technical support is provided for tight gas reservoir fluid identification work.

The present application relates to the technical field of cementing spacer fluid cleaning efficiency, and is a cementing spacer fluid oil-based mud cleaning efficiency evaluation device and method, the former comprising a simulation mechanism, a mud injection mechanism, a mud recovery container, a mud circulating mechanism, a spacer fluid injection mechanism, a spacer fluid recovery container and a cleaning effect detection mechanism, the simulation mechanism comprising a simulated wellbore and a simulated casing, the simulated wellbore being an upwardly open cylindrical container, and the lower part of the simulated casing being located in the simulated wellbore. The present application has a reasonable and compact structure and is easy to use. By setting the simulated wellbore, the simulated casing and the related mechanisms, the mud circulating process and the actual spacer fluid displacement oil-based mud process are simulated, the cleanliness of the inner wall of the simulated wellbore is detected by the cleaning effect detection mechanism, and thus the cleaning efficiency of the spacer fluid on the oil-based mud is evaluated, providing an important reference for the selection of cementing spacer fluid.

The invention discloses a rock debris hydrocarbon generation potential quantity determination method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a target rock debris sample corresponding to a target depth interval; wherein the target rock debris sample is rock debris polluted by oil-based mud; determining an original hydrocarbon generation potential spectrogram and hydrocarbon generation measurement data based on the target rock debris sample, and determining a target hydrocarbon generation potential spectrogram based on the original hydrocarbon generation potential spectrogram and the hydrocarbon generation measurement data; and determining a target hydrocarbon generation potential corresponding to the target rock debris sample based on the target hydrocarbon generation potential spectrogram. Based on the above technical scheme, the rock debris sample corresponding to the target depth interval is obtained, and the target hydrocarbon generation potential is determined based on the target hydrocarbon generation potential spectrogram corresponding to the rock debris sample, and the sample does not need to be preprocessed, so that the technical effect of improving the determination efficiency of the hydrocarbon generation potential is achieved.

The invention provides a logging evaluation method, system and equipment for crack effectiveness and a medium. The logging evaluation method comprises the following steps that oil-based mud imaging logging information is processed and explained based on logging information, and natural cracks around a well are picked up; obtaining crustal stress parameters according to the one-dimensional rock mechanical model, the longitudinal and transverse waves and the density data, picking up induction joints in imaging logging through electric imaging logging data, and determining the horizontal principal stress direction through well wall caving; rock core observation is performed based on rock core data, and different crack types are divided; determining stress parameter change rules of different crack types in combination with the oil-based mud electric imaging and the stress parameters, associating the different crack types with the corresponding stress parameters, and establishing corresponding relation rules of the different crack types and the stress parameters; according to stress parameter change rules corresponding to different crack types, full-well target layer crack effectiveness analysis is carried out based on the oil-based mud electric imaging and the stress parameters, the crack effectiveness of different well sections is determined, and an effective crack distribution area is judged.

The utility model relates to the technical field of waste oil-based mud treatment, and discloses a cooling device for waste oil-based mud treatment, which comprises a tank body, a tank cover is arranged on the upper surface of the tank body, a cooling component is arranged on the upper surface of the tank cover, and a support frame I is fixedly connected to the upper surface of the tank cover. One end of the first supporting frame is fixedly connected with a first motor, and a stirring assembly is arranged at the output end of the first motor. The cooling assembly comprises a second flange, the lower surface of the second flange is fixedly connected into the tank cover, a first flange is arranged on the upper surface of the second flange, a first ventilation pipeline is fixedly connected to the upper surface of the first flange, and the outer wall of the first ventilation pipeline is fixedly connected with the output end of a fan. According to the device, the first limiting rod is rotated through the output end of the first motor, the first limiting rod drives the first stirring blade and the second stirring blade to conduct stirring, then the output end of the draught fan is connected with the first ventilation pipeline, cold air is output for cooling treatment, and then the practicability of the device is improved.

The invention discloses lifting equipment for oil exploitation, and relates to the technical field of oil-based mud conveying. The lifting equipment for oil exploitation comprises a shell, a rotating shaft movably installed in the shell, a conveying motor used for providing power for the rotating shaft and a fixing base fixed to the rotating shaft and used for fixing a spiral blade, and an auxiliary assembly for improving the lifting and conveying efficiency and a drainage assembly for assisting drainage are arranged outside the shell. The auxiliary assembly comprises a protruding block fixed to the rotating shaft and used for transmitting power needed by operation of the auxiliary assembly. One end of the moving rod penetrates through the bump in a sliding manner; the supporting rod is mounted at one end of the moving rod for transmitting power; the sliding rail is fixed to one end of the shell, provides supporting force for the sliding base and guides the sliding base, a vertical rod is fixed to the sliding base, and a transverse rod is fixed to the vertical rod; the water content of the oil-based mud in the conveying process is reduced, so that the conveying difficulty is reduced, and the conveying efficiency is improved.

The present application belongs to the technical field of reservoir logging evaluation in oil and gas exploration, and discloses a method for calculating nuclear magnetic porosity of oil-based mud invaded oil layer. First, a core is selected to simulate the state of oil-based mud invading oil layer. Second, nuclear magnetic resonance (NMR) instruments are used to respectively perform NMR experimental measurement and processing on the core in the state of oil-based mud invading oil layer and the oil-based mud fluid sample, so as to obtain the NMR T2 spectrum of the core in the state of oil-based mud invading oil layer, the total amplitude of the NMR T2 spectrum, and the NMR porosity of the core in the state of oil-based mud invasion. Then, the total amplitude of NMR of the oil-based mud fluid sample and the core in the state of oil-based mud invading oil layer is calculated to obtain the total amplitude of NMR corrected by oil-based mud invasion. The total amplitude of NMR corrected by oil-based mud invasion is combined with the oil layer NMR porosity affected by oil-based mud invasion to calculate the NMR porosity corrected by the influence of oil-based mud invasion, so as to obtain the real porosity of the formation.

The invention discloses a natural gas maturity continuous detection method based on drilling rock debris tank head gas, and belongs to the field of deep sea oil-gas exploration, and the natural gas maturity continuous detection method comprises the following steps: S1, rock debris sample treatment; s2, collecting a sample; s3, storing and transporting the sample; s4, heating in a water bath; s5, testing and analyzing; and S6, data processing: fitting mudstone section light hydrocarbon maturity parameters and mud gas methane carbon isotope or kerogen vitrinite reflectivity, establishing a rock debris tank top gas light hydrocarbon maturity model, and estimating the maturity of natural gas / kerogen around an exploratory well. By optimizing the sample treatment and analysis process, continuous and low-cost detection of the natural gas maturity under the oil-based mud system is realized, and an efficient technical means is provided for deep sea oil-gas exploration. The method is verified in the practical application of the B52 well of the dolomitic sag in the Pearl Jiangkou basin, and the exploration precision requirement is met.

The utility model relates to the technical field of rotary kilns, in particular to a viscous waste oil-based mud pipeline flow measuring device which comprises a bottom plate, a feeding pipe is arranged at the top of the bottom plate, a rotary kiln is arranged on one side of the feeding pipe, and a quantitative feeding mechanism is arranged at the top of the bottom plate. The quantitative feeding mechanism comprises a feeding box used for feeding and a feeding box used for feeding, and a rotary connecting mechanism is arranged on one side of the feeding pipe. Slurry in a material box is pumped by starting a metering pump and then conveyed into a feeding box through a conveying pipe, then a motor is started to drive a threaded rod to rotate, a material storage box moves under the action of a driven rod, a blocking plate breaks away from blocking of an intercepting plate during moving, the blocking plate is opened, and the slurry is conveyed into the feeding box through a conveying pipe. The feeding device has the advantages that the feeding quantity cannot be accurately mastered, continuous feeding cannot be guaranteed and normal production is affected in the feeding process, and feeding smoothness is effectively guaranteed.

The present application relates to a kind of oil-based drilling cuttings harmless treatment system and method based on smoldering technology, smoldering technology is applied to the harmless treatment process of oil-based drilling cuttings generated in the process of oil-based drilling mud not falling, and the heat generated by tail gas treatment system is heated by heat exchanger to mud in the mud not falling treatment collection box, prevent freezing when winter construction, not only effectively ensure the complete oil-based mud not falling, protect the environment around drilling operation, while realizing the harmless treatment of oil-based drilling cuttings on site, avoid the risk of long-distance transportation of oil-based drilling cuttings to dangerous waste treatment plant for terminal processing.This application can carry out oil-based drilling cuttings reduction while drilling on-site, harmless treatment, realize production disposal to avoid the risk of oil-based drilling cuttings leakage in the process of transportation.At the same time, the waste heat of smoldering treatment process is fully utilized, and has the advantages of oil-based drilling cuttings disposal completely.

The invention provides a non-conductive slurry performance adjusting short section, a well logging device and a well logging method, and belongs to the technical field of reservoir well logging collection. The adjusting short section comprises a storage bin used for storing a conductive additive, a first short section body, a premixing module, a releasing module, a conductive performance monitoring assembly and the like. Based on the technical thought that a conductive additive is mixed into non-conductive slurry (such as oil-based slurry), the conductive additive and the non-conductive slurry in a shaft are premixed in the premixing module to form premixed slurry, and the premixed slurry is pumped out of the first short section body and then mixed with the slurry in the shaft to form mixed slurry with improved conductivity; and the real-time resistivity of the mixed slurry is monitored through the conductivity monitoring component, so that the conductivity of the mixed slurry meets the requirements of a resistivity logging instrument, and high-quality acquisition of resistivity logging information in an oil-based drilling fluid environment is further realized.

The application provides an oil-based mud debris recycling and cleaning device, and relates to the technical field of drilling. The oil-based mud debris recycling and cleaning device comprises a storage device, a cleaning device and a transfer device. The storage device comprises a base body and a plurality of storage mesh tubes, and the plurality of storage mesh tubes are positioned on the base body. The cleaning device comprises a cleaning box and a cleaning mechanism, the cleaning box has a cleaning cavity for positioning the storage mesh tubes, and the cleaning mechanism is installed on the cleaning box. The transfer device is used for transferring the storage mesh tubes between the base body and the cleaning box. The recycling and cleaning device has high automation, high operation efficiency, low labor intensity, convenient debris recycling and cleaning, and high data accuracy. Meanwhile, the device can obtain debris with higher purity, which is beneficial to obtaining drilling-related data through debris property analysis, and the obtained data is more accurate and reliable.

The invention discloses an oil-based mud demulsifier and a preparation method thereof. The oil-based mud demulsifier is prepared from the following raw materials in parts by mass: 20 to 40 parts of polypropylene compound, 10 to 30 parts of polyene polyamine compound, 5 to 10 parts of initiator, 2 to 4 parts of pH (Potential of Hydrogen) regulator and 100 parts of water. The oil-based mud demulsifier provided by the invention has a multi-branched chain structure, and can effectively destroy an interfacial film of waste mud after being added into the waste mud so as to achieve a demulsification effect. The method for preparing the demulsifier is simple and high in demulsification efficiency, and can be applied to treatment of all-oil-based, water-in-oil and synthetic-based waste drilling fluids. Due to a good demulsification effect, the demulsifying agent can also be applied to environment-friendly treatment of waste oil-based mud.

The application discloses an oil-based mud invasion high-wax crude oil formation in-situ nuclear magnetic resonance T2 spectrum acquisition method, which comprises the following steps: S1, constructing a nuclear magnetic resonance T2 spectrum model of saturated single-phase fluid through numerical simulation, and setting model parameters; S2, constructing a nuclear magnetic resonance T2 spectrum model of two-phase fluid with different oil-based mud saturations under the oil-based mud environment based on the nuclear magnetic resonance T2 spectrum model; S3, taking a core on a reservoir site, making a rock sample and performing a physical experiment, and measuring a nuclear magnetic resonance T2 spectrum of the rock sample; and S4, comparing and analyzing the nuclear magnetic resonance T2 spectrum obtained through the physical experiment with the two-phase fluid nuclear magnetic resonance T2 spectrum model obtained through numerical simulation, and obtaining a nuclear magnetic resonance logging response characteristic law of the oil-based mud invasion high-wax oil layer. The method has high calculation speed and excellent data processing capacity, can significantly improve the measurement precision and reliability of the magnetic resonance logging under the oil-based mud invasion, and is widely applicable to the fields of oil exploration and geological survey.

The utility model relates to the technical field of oil-based mud treatment equipment, and particularly discloses an oil-based mud treatment device which comprises a main flow pipeline and box bodies, the box bodies are arranged on the ground, the main flow pipeline is arranged on one side of the box bodies, the bottom of the main flow pipeline is connected with a plurality of branch flow pipelines, and the branch flow pipelines are connected with the box bodies. One end of each branch pipeline is fixedly connected with a feeding pipe, a cover plate is arranged on the upper surface of the box body, a plurality of fixed sliding columns are fixedly connected to the bottom of the cover plate, a foam plate is slidably connected to the fixed sliding columns, rubber balls are fixedly connected to the upper surface of the foam plate, and the feeding pipe penetrates through the cover plate and is slidably connected with the cover plate. The device has the beneficial effects that when one box body is full, the position of a water pipe does not need to be manually replaced, the feeding port can be automatically closed, oil-based mud can flow into other box bodies which are not full, and manpower is effectively saved.

The invention discloses an oil-based mud resistant composite rotary blowout preventer rubber core and a preparation method thereof, and belongs to the technical field of sealing rubber cores special for rotary control heads for oil-based mud unbalanced pressure control drilling. The preparation method comprises the following steps: coating the surface of the inner-layer rubber with a composite binder, bonding the outer-layer rubber and the inner-layer rubber through the composite binder, and heating and curing to obtain the composite rotary blowout preventer rubber core. By designing and preparing the composite binder with hydrolysis resistance, oil resistance, acid and alkali resistance and high temperature resistance, the inner layer rubber with good rebound resilience and aging resistance and the outer layer rubber with good oil resistance, aging resistance and acid and alkali corrosion resistance are bonded and fixed to form the composite rotary blowout preventer rubber core; therefore, the technical problems proposed in the background technology are solved.

The utility model discloses a novel rock debris cleaning machine which comprises a cleaning tank composed of an inner tank and an outer tank, an ultrasonic vibrator is installed in a sandwich structure between the inner tank and the outer tank, a bracket is placed in the cleaning tank, a sample containing piece is placed on the bracket, a heater is arranged on the inner side of the cleaning tank, and the inner side of the cleaning tank is provided with a water inlet and a water outlet. A cleaning agent adding mechanism is arranged on one side of the cleaning tank, and an overflow opening is formed in the side wall of the cleaning tank. When water-based mud needs to be cleaned, the ultrasonic vibrator is started to provide ultrasonic vibration force for the cleaning tank, and then ultrasonic cleaning of a rock sample placed in the cleaning tank is achieved; when the oil-based mud needs to be cleaned, a cleaning agent can be added, a heater is used for heating cleaning liquid in the cleaning tank, meanwhile, high-pressure air is injected in cooperation with an aeration pipeline arranged at the bottom of the cleaning tank, bubbles are formed in the cleaning liquid in the cleaning tank, and the cleaning effect on the oil-based mud is further guaranteed.

The utility model provides oil-based mud storage equipment in the technical field of mud storage tanks, which comprises a support, a tank body arranged on the support, a tank cover mounted at the top of the tank body, the tank body consisting of a cylindrical tank body and a conical tank body, and a stirring component arranged in the tank body and comprising a central shaft, a stirring blade, a vertical plate, an inclined plate and a scraping plate, a plurality of stirring blades are arranged on the central shaft, are annularly arranged around the central shaft and are distributed at equal intervals in the axial direction of the central shaft; the scraping plate is in contact with the inner side walls of the cylindrical tank body and the conical tank body; the top of the center shaft penetrates through the tank cover and is fixedly connected with a stirring motor, the stirring motor is fixedly connected with the tank cover, the tank cover is provided with a feeding port, a breather valve and a laser radar, slurry and liquid are temporarily mixed through stirring blades, and oil-based slurry attached to the inner wall of the tank body is scraped off through a scraping plate; external impurities are prevented from entering through the breather valve, loss caused by liquid volatilization is reduced, and meanwhile discharging is facilitated; and the laser radar is arranged to help judge the storage capacity and the stirring time.

An oil-based mud while-drilling electrical imaging logging device and method, the main part of the logging device is the button electrode at the center position of the electrical imaging probe device, and the shielding electrode and the return electrode are sequentially arranged outward, the numerical simulation method and the physical experiment model method can determine the instrument constant of the oil-based mud while-drilling resistivity imaging logging, and the conversion between the measured impedance amplitude and phase information and the formation resistivity and the formation dielectric constant is realized; the fusion splicing strategy of the formation resistivity is formulated, the measured data under the multi-frequency condition are used to realize the fusion splicing calculation of the full-range formation resistivity; the neural network fitting method is used to establish the minimum objective function, and the inversion or optimization algorithm is used to realize the calculation of the formation resistivity, the formation dielectric constant and the electrode plate gap; the neural network algorithm is used to fit the forward response function, and then the inversion or optimization algorithm is used to obtain the formation resistivity, the gap and the formation dielectric constant, so that the oil and gas formation interpretation and evaluation are better served.