409 results about "Petroleum" patented technology

The invention belongs to the technical field of petroleum and natural gas engineering, and particularly relates to a priori knowledge embedded unsupervised learning geology-engineering dessert comprehensive evaluation method, which comprises the following steps: S1, obtaining an evaluation data set of a research area, and preprocessing and standardizing the evaluation data set; s2, dividing the evaluation data set into a positive index and a negative index according to the prior knowledge, constructing positive and negative ideal points through the prior knowledge, and fusing to generate an unsupervised evaluation data set; s3, clustering is carried out on the unsupervised evaluation data set by adopting principal component analysis and an incremental online k-means algorithm; and S4, according to category labels obtained by clustering, determining geological-engineering dessert grades by adopting a standardized variable distance grading evaluation method, and carrying out segmented clustering optimization and perforation position optimization on the geological-engineering dessert grades. According to the method, a supervised evaluation effect is achieved through an unsupervised algorithm, comprehensive evaluation of the dessert of the fractured horizontal well section is achieved, and the problem of unlabeled data evaluation is effectively solved.

The invention relates to the field of petroleum engineering, in particular to a method for evaluating the permeability damage degree of a low-permeability reservoir, which comprises the following steps of: 1) coring a target reservoir, and measuring by an experiment to obtain core mineral percentage content and rock mechanical parameters; 2) establishing a reservoir single proppant model, calculating the porosity change rate when the single proppant is embedded, and establishing a mechanical distribution function of the whole proppant and the rock wall surface according to the percentage content of the core minerals and the mechanical parameters in the step 1); and 3) converting the change of the permeability of the reservoir when the proppant just enters the stratum and is in a stable state into porosity change by combining the single-particle pore change rate and the rock mechanical distribution function, calculating a porosity change index, and evaluating the damage degree of the reservoir. According to the method disclosed by the invention, the reservoir damage and permeability reduction caused by propping agent embedding due to stress change are converted into a porosity change index, and the mine scale reservoir permeability damage degree is indirectly evaluated.

The invention relates to the technical field of petroleum drilling engineering, and particularly discloses a drilling plugging agent as well as a preparation method and application thereof. According to the plugging agent, nano silicon dioxide and graphene oxide serve as a composite matrix, and the well drilling plugging agent with excellent dispersion stability, compact plugging performance, temperature resistance, salt resistance and reservoir friendliness is obtained through silane coupling agent graft modification and polymer copolymerization composite modification. The technical defects that an existing nano plugging agent is prone to agglomeration, poor in compatibility with drilling fluid, insufficient in extreme working condition resistance and the like are overcome, the preparation process is simple and controllable, the cost is relatively low, the plugging agent can be added into water-based or oil-based drilling fluid according to the mass ratio of 0.5-5%, the plugging agent is suitable for shale, deep high-temperature high-pressure high-salt complex stratums and the like, a compact plugging layer can be formed, and the plugging effect is good. Shale micro-cracks and deep stratum large cracks are effectively blocked, and the problems that a traditional blocking agent is prone to agglomeration, poor in extreme working condition resistance and the like are solved.

The invention designs an environment-friendly blowout device suitable for a high-salinity gas well, and belongs to the technical field of unconventional petroleum and natural gas extraction. The device comprises a two-stage concentric liquid remover and a combustion purification system which are connected in sequence. The two-stage concentric liquid remover realizes efficient separation of gas, liquid and solid phases through two-stage centrifugal separation. And a self-adaptive liquid discharge and gas control mechanism is arranged at the bottom of the two-stage concentric liquid remover, so that flow fluctuation self-adaptive sealing can be realized. Pretreated gas enters a combustion tank, is discharged through a torch pipe and is ignited, and generated combustion gas and solid particles are sprayed and purified in all directions and sprayed liquid is recycled through a spraying and recycling device above the combustion gas and the solid particles. The device integrates multiple technical functions such as buffering and pressure stabilizing, multi-phase separation, all-directional spraying purification, fire-liquid isolation, flow fluctuation self-adaption, automatic sealing, explosion prevention and fire retardance, the three-phase separation efficiency is remarkably improved, salting-out particles entering the environment are reduced, and equipment and technical supports are provided for green development of a hypersalinity gas well.

The invention discloses a tunnel plateau complex geology accurate exploration method based on ultra-deep horizontal drilling, which comprises the following steps: step (1) horizontal drilling layout: selecting a construction site on the ground of a to-be-tunneled tunnel, and planning a horizontal drilling track along a tunnel line; (2) horizontal drilling and multi-dimensional geological exploration are constructed, specifically, according to the planned horizontal drilling track, a petroleum drilling machine is used for constructing horizontal drilling; logging operation is carried out in the horizontal drilling construction process, and comprehensive logging and transient electromagnetic detection are carried out after horizontal drilling construction is completed; and step (3), integration and analysis of geological exploration data information: integrating and analyzing the data information collected by multi-dimensional geological exploration, determining geological conditions along the tunnel line, and identifying geological abnormal sections. According to the invention, the problems of discontinuous exploration and poor accuracy of traditional vertical drilling and geophysical prospecting means can be solved, and high-precision and continuous exploration of geological conditions near the tunnel line is realized.

The invention belongs to the technical field of petroleum geological exploration, and relates to a logging lithology intelligent identification method and system based on well network position map structure learning and feature fusion, and the method comprises the steps: obtaining the original data of logging in a target work area, and carrying out the standardization preprocessing, the original data comprises logging data, well position coordinate data and lithology label data; according to the original data after standardization preprocessing, a well network position map structure is established; performing feature extraction on the well pattern position map structure by using a map neural network to obtain high-dimensional features; fusing the high-dimensional features with original logging features, and obtaining an enhanced feature set to train a lithology classification model; and utilizing the trained lithology classification model to predict the lithology of a to-be-identified well section, and outputting a lithology identification result of the to-be-identified well section. The lithology identification accuracy and the geological rationality can be obviously improved.

The present application belongs to the technical field of petroleum chemical industry, and particularly relates to a method suitable for diagnosing liquid loading of gas well, which comprises: judging whether the gas well is liquid loading by critical flow rate method; judging whether the gas well is liquid loading by dynamic energy factor method; judging whether the gas well is liquid loading by pressure gradient method; judging whether the gas well is liquid loading by flow state method; judging whether the gas well is liquid loading by IPR method of water production gas well; judging whether the gas well is liquid loading by deliverability test method; and judging the degree of liquid loading of the gas well. The present application realizes accurate prediction of the dynamic of liquid loading of the gas well by studying the diagnosis technology of liquid loading of the gas well and complementarily verifying different methods, forms a set of targeted and high-compliance liquid loading diagnosis method of the gas well with multiple factors, provides technical support for determining the intervention time of drainage gas recovery measures and formulating scientific and reasonable drainage gas recovery measures, realizes the purposes of improving the liquid discharge capacity of the gas well and prolonging the stable production period of the gas field, and thus ensures normal and stable production of the gas well.

This invention discloses a method and system for calculating the exploitable reserves of multi-layered gas reservoirs, belonging to the field of oil and gas development technology. The method includes the following steps: evaluating the dynamic reserves of multi-layered syndicated gas wells; calculating the contribution ratio of stratified production at different production times of the gas well; based on the contribution ratio of stratified production, and according to the monthly single-point stratified production splitting coefficient, calculating the daily production splitting coefficient through linear interpolation, and combining it with the daily production of the gas well to calculate the daily production of each sub-layer, and accumulating the cumulative production of each sub-layer; based on the cumulative production of each sub-layer, calculating the cumulative gas production ratio of each stratum, and combining it with the dynamic reserves calculation results of the gas well, determining the exploitable reserves of the strata. This method provides a prediction method for the exploitable reserves of multi-layered gas reservoirs. Based on the dynamic and static parameters of the gas well sub-layers and the stratified production capacity, this method calculates the exploitable reserves of multi-layered syndicated gas wells, and can effectively guide the prediction of the exploitable reserves of multi-layered gas reservoirs.

The utility model discloses a kind of petroleum chemical oil-water mixture sampling separation devices, it is related to oil-water separation technical field, including machine body, the inside of machine body is separately provided with filter chamber and separation chamber, and filter chamber and separation chamber are mutually through, the inside of the filter chamber is equipped with filter screen, cleaning assembly is provided in the top of filter screen, the right side outer wall of machine body is fixed with oil tank, the inside of oil tank is provided with oil scraping assembly.The utility model is driven hollow connecting plate with scraper to move circumferentially on filter screen by being set as power source and the auxiliary of round bar, bevel gear one, bevel gear two, hollow rotating rod, to remove impurities on the outer surface of filter screen, prevent from happening block, reach the effect that it is convenient to clean, to improve practicality.

The invention discloses an abrasive water jet rock breaking simulation method based on a DEM-CFD coupling method. Establishing an EBPM bonded rock mass discrete element model through a discrete element DEM, and calibrating mesoscopic parameters through a virtual mechanical test; simulating a water-abrasive two-phase flow through fluid dynamics CFD, and adopting a Gidaspow drag force model; the DEM-CFD bidirectional interface realizes real-time coupling; carrying out post-treatment to extract an erosion morphology and a crack network; the method can effectively simulate the rock mass fracture process and the large deformation behavior in the water jet rock breaking process and reveal rock mass damage evolution from the microscopic scale, and can be widely applied to research of water jet assisted rock breaking in the fields of civil engineering, mining, petroleum energy, marine resources and the like.

The invention relates to the technical field of petroleum geophysical exploration, and provides a reservoir forming period hydrocarbon source rock paleo-pressure quantitative prediction method and system, and the method comprises the steps: solving the stratum denudation thickness based on a mudstone compaction curve extrapolation method; obtaining the thickness of a terrain skeleton, constructing a binary function based on the stratum denudation thickness and the thickness of the terrain skeleton to analyze an approximate solution, and inverting the stratum paleo-burial depth for the logging paleo-burial depth; obtaining the total porosity of the hydrocarbon source rock according to the stratum paleo-burial depth; quantitatively predicting the single well paleo pressure of the hydrocarbon source rock according to the total porosity; the multi-well paleo pressure is obtained based on the single well paleo pressure, interpolation is performed according to the multi-well paleo pressure to obtain the plane paleo pressure, in this way, the accurate well logging compaction trend line is established, the accuracy and reliability of the prediction result are improved by considering the influence of the shear wave speed, and therefore the accuracy of predicting the paleo pressure of the hydrocarbon source rock in the reservoir forming period is improved.

The present application provides a kind of thin coal seam reservoir identification method, system, storage medium and equipment, belong to petroleum and natural gas exploration and development field.The method is: for the determined target interval, the full reflection coefficient sequence of thin coal seam is calculated in combination with well logging data and one-dimensional forward modeling is carried out to obtain the waveform and energy of thin coal seam reservoir, then the reservoir reflection coefficient sequence after removing coal seam is obtained and one-dimensional forward modeling is carried out to obtain the waveform and energy of the reservoir after removing coal seam, the reservoir identification characteristics are determined by comparing the energy change of the two reservoirs.The present application determines the identification and prediction in the thin coal seam development area without removing coal seam by analyzing the characteristic change of reservoir identification before and after thin coal seam, improves the identification accuracy of thin coal seam reservoir, so as to carry out efficient oil and gas exploration and development.

This application provides a method for preparing test samples of fractured rock, relating to the field of petroleum geological exploration technology. The method includes: preparing a predetermined number of test samples based on different water-cement-sand-gravel ratios, and identifying target test samples; scanning the fracture profiles of the fractured rock and printing fracture surface molds for each fracture profile; printing cement casting molds corresponding to the fractured rock according to its external dimensions and the distribution of fracture profiles within it; placing the fracture surface molds into the cement casting molds and positioning plates into corresponding groove groups to limit the position of the fracture surface molds; and pouring target cement, prepared according to the water-cement-sand-gravel ratio corresponding to the target test sample, into the positioned cement casting mold to obtain the test sample corresponding to the fractured rock. This application uses this method to produce test samples that more closely approximate the mechanical properties and fracture structure of fractured rock.

The invention discloses a gas leakage detection device for petrochemical engineering safety production. The gas leakage detection device comprises a gas leakage detector, an auxiliary lighting mechanism and a holding mechanism, the auxiliary lighting mechanism comprises a supporting plate fixedly connected to the gas leakage detector, and one side of the supporting plate is rotationally connected with a rotating shaft; according to the gas leakage detection device for petrochemical engineering safety production, an auxiliary lighting mechanism and a holding mechanism are arranged on a gas leakage detector, so that a rack can drive a gear to rotate after moving, and a rotating shaft can drive an anti-explosion lighting lamp to adjust the angle; the two movable plates can drive the limiting plates to abut against the inner wall of the first groove under the limiting effect of the springs, so that the position of the rack after movement can be fixed; through the arrangement, the gas leakage detector has handheld and auxiliary lighting functions, so that the gas leakage detector is more convenient to detect an area with insufficient light in a petrochemical industry production environment.

This invention relates to the field of oil drilling and production, and discloses a drilling and production acquisition structure support frame, comprising a positioning cylinder (1), a support cylinder (2), and a fixing cylinder (3) fixedly arranged sequentially from bottom to top. The drilling and production acquisition structure to be supported passes through the three cylinders. The positioning cylinder (1) is used for positioning the bottom of the drilling and production acquisition structure; the support cylinder (2) is used for supporting the drilling and production acquisition structure in the middle; and the fixing cylinder (3) is used for clamping and fixing the drilling and production acquisition structure at the top. The drilling and production acquisition structure support frame provided by this invention can fix the drilling and production device from various directions through the clamping components. The position of the support cylinder can also be freely adjusted in the vertical direction. The positioning cylinder is equipped with a positioning clamp to accurately position the drilling and production acquisition mechanism at the bottom. The overall support frame provides a stable support and fixation effect, and is suitable for fixing drilling and production devices of different diameters and heights, with a wide range of applications.

The invention discloses a phased array detection process and verification method of a gas production tree drift diameter flange sealing surface simulation test block, and relates to the technical field of petroleum and natural gas wellhead device detection, and the phased array detection process comprises the following steps: S1, obtaining a test block design reference; s2, obtaining sound velocity parameters and baseline echo data; s3, obtaining a scanning parameter table matched with the defect type; s4, obtaining a TCG calibration curve and gain setting for detection; s5, obtaining original time sequence echo data and imaging data; s6, generating a final detection result and a verification report; according to a defect type scanning scheme, 100% detection of sealing surface corrosion and bolt hole transverse and longitudinal cracks is realized, and no detection blind area exists; the quantitative precision is high, specifically, the defect quantitative error is controlled within + / -1.1 mm through targeted TCG calibration, and the precision is improved by 40% compared with that of a conventional process; based on a standardized verification process of a fixed model test block, different operators use the same equipment for detection, and the data variation coefficient is less than or equal to 5%; and the adaptability is high.

The invention relates to the technical field of petroleum pipes in the water and petroleum industry, in particular to a U-shaped thermos bottle type petroleum casing pipe for a geothermal well, which comprises an inner-layer casing pipe, an outer-layer casing pipe and a vacuum module. The inner-layer sleeve and the outer-layer sleeve are both of a hollow cylindrical structure, the outer-layer sleeve is connected with the inner-layer sleeve through two annular connecting pieces to form a vacuum interlayer, the outer wall of the outer-layer sleeve is provided with a through hole and an NPT bolt, the NPT bolt is used for vacuumizing the vacuum interlayer, the outer wall of the outer-layer sleeve is provided with a vacuum degree module, and the vacuum degree module is connected with the outer-layer sleeve. The vacuum degree module comprises a shell, an air bag, a sealing ring, a spring and a vacuum ruler and is used for monitoring the vacuum degree of the vacuum interlayer in real time. According to the thermos bottle type petroleum casing pipe for the U-shaped geothermal well, the design is similar to a thermos bottle, heat conduction can be effectively reduced, the heat preservation effect of the inner-layer casing pipe is improved, meanwhile, the monitoring module is arranged, the thermos bottle type petroleum casing pipe is suitable for the high-temperature geothermal environment, and the exploitation efficiency and safety of the geothermal well are improved.

The invention discloses a uranium separation and extraction method for hydrocarbon-containing sandstone uranium ore. According to the main technical scheme, a rock sample is pretreated to obtain a mixed ore sample, the mixed ore sample is loaded into a high-pressure column, a high-pressure kettle and a gas cylinder are prepared, an HCO3 <-> leaching solution is prepared in the high-pressure kettle, and the gas cylinder is filled with CO2 and O2 mixed gas; a gas cylinder, a high-pressure kettle and a high-pressure column are connected in series, and a uranium separation and extraction and petroleum hydrocarbon removal test device is constructed; introducing mixed gas into the high-pressure kettle by using a gas cylinder, and setting the gas pressure in the high-pressure kettle; starting the test device, injecting the HCO3 <-> leaching solution into the high-pressure column under the power provided by the gas pressure in the high-pressure kettle, starting to perform uranium separation and extraction on the mixed ore sample, and simultaneously removing hydrocarbon substances in the mixed ore sample. Uranium in the hydrocarbon-containing sandstone uranium ore is separated and extracted through CO2 + O2 + HCO3-synergistic leaching and pressure regulation and control, hydrocarbon substances are removed at the same time, interference of accumulation of the hydrocarbon substances on uranium separation and extraction is reduced, ore permeability is improved, and the problem of uranium leaching in the hydrocarbon-containing sandstone uranium ore is solved.

The application provides a pre-leaching auxiliary solvent extraction method for oil sand or oil sludge containing heavy crude oil, and belongs to the technical field of product separation and solid waste treatment in the field of petroleum chemical industry. The bitumen is dispersed by using aromatic hydrocarbon first, and then extracted by using naphthenic hydrocarbon, so that good extraction effect can be achieved, a surfactant does not need to be added, the solid phase residual oil rate after treatment is less than 1wt%, and the national relevant standard is met; the pre-leaching agent and the extractant used in the application have low boiling points, are easy to distill and recover, and the recovery rate is greater than 85%. In addition, the method provided by the application has the operation temperature of room temperature (20-30 DEG C), the operation condition is mild, the method is simple, the energy consumption is low, the organic solvent and the crude oil (containing bitumen and other heavy components) can be recovered by distillation, and the resource utilization is realized.

The utility model discloses a petroleum refining tail gas purification device, and relates to the technical field of purification equipment, the petroleum refining tail gas purification device comprises an exhaust pipe and a purification box, one end of the purification box is provided with a first connecting pipe, and the first connecting pipe is connected with one end of the exhaust pipe through a clamping mechanism; a plurality of mounting frames are rotationally connected into the purification box, filter screens are mounted in the mounting frames, a cam is arranged on the rotating rod, and a driving assembly is mounted on the purification box and connected with the rotating rod; a second connecting pipe is arranged at the end, away from the first connecting pipe, of the purifying box, the other end of the second connecting pipe is connected with an exhaust fan, a gas detector is installed on the second connecting pipe, and a circulating pipe is connected between the first connecting pipe and the second connecting pipe; the cam can drive the filter screen to vibrate, particles and impurities on the filter screen are vibrated to fall off, the situation that the filter screen is blocked and influences the filtering effect of the filter screen is reduced, and the discharge amount of pollutants can be remarkably reduced.

The invention relates to the technical field of petroleum geophysical exploration, and particularly discloses a consolidation parameter optimization and soft pore volume ratio shear wave velocity prediction method and device, and the method comprises the steps: calculating the elastic modulus of a dry rock skeleton based on a dual-pore medium rock physical model; based on the elastic modulus of the dry rock skeleton, calculating the elastic modulus of the fluid saturated rock through a Gassmann equation, and further calculating and predicting the longitudinal wave velocity; by continuously adjusting input parameters and optimizing consolidation parameters and a soft hole volume ratio, the error between the predicted longitudinal wave speed and the measured longitudinal wave speed is minimized, and the optimized consolidation parameters and the optimized soft hole volume ratio are obtained; and calculating the shear wave velocity based on the optimized consolidation parameters and the soft pore volume ratio. According to the method, the influence of the pore structure and the diagenesis consolidation effect on the longitudinal and transverse wave velocity of the rock is fully considered, the method has definite physical meaning and geological significance and relatively high prediction precision, and the situation that most models only consider the diagenesis consolidation effect or focus on a single pore structure is avoided.

The application relates to the technical field of petroleum geophysical exploration processing, and provides a method, device, equipment, medium and product for improving the signal-to-noise ratio of reconstructed data, which is characterized in that the signal-to-noise ratio of each trace of a target layer in an irregular observation system is calculated as the signal-to-noise ratio of the target layer, a three-dimensional array is constructed for data of a regular observation system designed based on the irregular observation system, the three-dimensional array is valued based on the irregular observation system, the three-dimensional array after the valuation is calculated based on three-dimensional curvelet transformation, and re-valuation is performed according to the signal-to-noise ratio of the data of the target layer of adjacent traces; the use proportion of high signal-to-noise ratio data in the reconstruction process is improved; after iterative calculation, the reconstructed data is output; the continuity constraint in each direction and the signal-to-noise ratio information of the target layer in the three-dimensional data can be fully utilized; the use proportion of high signal-to-noise ratio data in the reconstruction process is improved; and the signal-to-noise ratio of the reconstructed data is improved, thereby meeting the demand of exploration production.

The invention relates to a data acquisition method, device and equipment applied to petroleum geological exploration and a medium. According to the method, multi-source historical data is fused by constructing unified geological feature embedding, and prediction and curiosity dual models are initialized. In exploration decision making, the system calculates the external geological value and the internal exploration reward of each potential area in parallel to balance known area development and unknown area exploration; dynamically fusing the two rewards and combining the collection cost to generate a visual self-adaptive priority graph, and guiding the optimal data collection action; and the whole system model is iteratively updated by using newly acquired data to form an autonomously evolved'evaluation-decision-acquisition-learning 'closed loop, so that exploration resources are intelligently guided to be thrown to an area with the highest information value, and the discovery efficiency and the exploration success rate of a new reservoir are effectively improved.

The invention discloses a gas sampling and replacing device based on negative pressure suction and a gas sampling device. The gas sampling and replacing device based on negative pressure suction comprises a sampling pipeline, a pressure regulating pipeline and a Venturi tube, one end of the sampling pipeline is connected to the throat part of the Venturi tube, and the other end is connected with a gas collecting device; and the pressure regulating pipeline is connected with the inlet section of the Venturi tube and is used for introducing an inert medium, regulating the vacuum degree in the sampling pipeline and driving the sampling pipeline to suck the sample gas. The gas sampling device comprises a gas collecting device and a gas sampling and replacing device based on negative pressure suction. According to the device, unpowered sampling is realized through a Venturi tube negative pressure principle, the structure is simple, and the mounting cost is reduced by 40%; during sampling, pipe fittings do not need to be disassembled, the external gas mixing amount is smaller than or equal to 0.01%, the detection deviation of trace components (larger than or equal to 2 ppm) in sample gas is smaller than or equal to 2%, the problem of sample gas pollution caused by disassembly and assembly in traditional sampling is solved, and the method is particularly suitable for trace component analysis scenes in the petrochemical industry field.

The invention relates to a shale compressive strength logging prediction method, which comprehensively considers the influence of stratum stress, temperature and hydration, and specifically comprises the following steps of: preparing a shale standard cylindrical core, sequentially carrying out ultrasonic testing and drilling fluid hydration treatment on undisturbed shale under different temperature and confining pressure conditions, and carrying out shale compressive strength logging prediction. Performing ultrasonic testing under the same condition after the hydration to obtain longitudinal and transverse wave time difference before and after the hydration of the shale; based on hydration, after interval transit time is extracted, a shale compressive strength experiment is carried out. According to the method, the influence of stratum stress and temperature is considered, so that the prediction result is more accurate and reliable; the logging data is used for prediction, the efficiency is improved, and time consumption and high cost of laboratory testing can be reduced. The method is not only suitable for the field of petroleum and natural gas exploration, but also can be applied to the fields of geotechnical engineering, underground storage and the like, and the application range and the market potential are expanded.

The invention relates to the technical field of petroleum geophysical exploration, in particular to a crustal stress calculation method, system and device and a computer program product, and the method comprises the steps: calculating an elastic parameter body and stratum thickness of a target stratum; calculating reservoir pore pressure and effective stress according to the elastic parameter body; calculating a horizontal maximum principal strain and a horizontal minimum principal strain according to the stratum thickness; and according to the horizontal maximum main strain and the horizontal minimum main strain, calculating the seismic crustal stress of the stratum based on a combined spring model considering the porosity. According to the reservoir pore pressure quantitative prediction method considering the influence of the shear wave velocity and the porosity, a Ricker wavelet function differential operator is innovatively constructed, accurate curvature values in different directions can be obtained, an accurate horizontal strain value can be obtained accordingly, ground stress is solved by adopting an improved combined spring model, and the prediction accuracy of the reservoir pore pressure is improved. And the accuracy of ground stress prediction by using the seismic data is greatly improved.

The application relates to an intelligent fine pressure control device and method, and relates to the technical field of petroleum chemical industry, and is used for solving the problem of low pressure control precision in the mode of manually adjusting the valve. The intelligent fine pressure control device comprises a pressure control valve with an inlet and an outlet, a servo actuator connected with the pressure control valve, and a control module electrically connected with the servo actuator; wherein the control module can send a pressure control instruction to the servo actuator, and the servo actuator can drive the pressure control valve to act according to the pressure control instruction, so that the pressure at the outlet is equal to a preset pressure value. In the application, the control module is arranged, and the control module is used for sending the pressure control instruction to the servo actuator, so that the servo actuator can accurately drive the pressure control valve to act according to the pressure control instruction, so as to accurately adjust the pressure value at the outlet. Therefore, the adjusting precision of the intelligent fine pressure control device is improved. Furthermore, the precision control demand of automation and intelligentization of modern industry is met.

The application is a method and system for improving the long-term service safety of solidified petroleum contaminated soil, which performs gradient in-situ treatment according to the distance of petroleum pollution source in the actual pollution scene, determines the position of the petroleum pollution source leakage point, and constructs a pollution concentration gradient distribution model based on the radial distance with the position of the leakage point as the center. The soil of the contaminated site is adjusted to the optimal water content, the soil of different contaminated areas is put into a mixer, different amounts of solidification materials are added according to the pollution grade, and the solidification materials include CaO, FA, NFA and graphene oxide. The petroleum contaminated soil with added solidification materials is compacted and maintained in-situ. In addition, an automatic and intelligent dynamic treatment method is adopted during construction to reduce the physical damage of petroleum pollutants to construction personnel and realize the precise treatment of different pollution level areas, so as to realize the comprehensive effect of harmless long-term performance and mechanical property structure long-term performance of the solidified petroleum contaminated soil.

The invention belongs to the technical field of petroleum and natural gas exploration and development, and discloses a method and a device for engraving a tiny fracture geologic body, electronic equipment and a medium, the method for engraving the tiny fracture geologic body comprises the following steps: based on a multi-wavelet decomposition result, carrying out wavelet energy optimization sorting and stripping a strong energy quantum wave, and then completing multi-wavelet reconstruction; seismic signals related to the tiny fracture system are highlighted, and the spatial form of the tiny fracture geologic body is obtained through engraving. The method effectively improves the spatial form engraving precision of the tiny fractured geologic body, and is suitable for spatial engraving of the tiny fractured geologic body.