36 results about "Sulfur deposition" patented technology

The invention relates to the technical field of oil-gas field development and pipeline transportation, in particular to a low-corrosivity sulfur dissolving agent and a preparation method thereof. The specific technical scheme is as follows: the low-corrosion sulfur dissolving agent comprises the following components: 50-70 wt% of metal alkoxide, 5-15 wt% of benzene compounds, 10-20 wt% of an alkaline triazine sulfur removal agent, 3-10 wt% of a surfactant, 5-15 wt% of a corrosion inhibitor and 3-10 wt% of an auxiliary agent. The prepared sulfur dissolving agent can be widely applied to medium and low sulfur-containing gas well shafts and gathering and transportation pipelines so as to slow down deposition of elemental sulfur and release of H2S and relieve erosion damage of deposition of wet elemental sulfur to oil pipes and packer rubber.

The invention belongs to the technical field of compositions for treating wells, and particularly relates to a sulfur dissolving agent for a sulfur-containing gas well. The sulfur dissolving agent consists of the following components in percentage by mass: 30-35% of sodium hydroxide, 2-3% of a dispersion penetrant, 3-6% of a physical sulfur dissolving agent, 2-5% of a catalyst and the balance of water, and the physical sulfur dissolving agent is selected from two or more of polypropylene imine, N-methyl pyrrolidone, triethylene tetramine, diethylenetriamine and methylbenzene. The catalyst is selected from one or more of ethylene glycol, terephthalic acid and sodium p-toluenesulfonate. According to the sulfur dissolving agent, physical sulfur dissolving agents are compounded, on the basis of the polarity similar dissolvability principle and the synergistic effect of the compounded physical sulfur dissolving agents, sulfur can be dissolved in the sulfur dissolving agent more easily, the starting temperature of sulfur dissolving is reduced by introducing a catalyst, and the dissolving performance of the sulfur dissolving agent to sulfur at the normal temperature is improved; and moreover, the heating process can be reduced, the construction cost is saved, and the method can be widely used for removing sulfur deposition blockage of a high-sulfur-content gas well shaft, a ground pipeline, a valve, a screen and the like.

The utility model relates to the technical field of desulfurization equipment, in particular to a biological desulfurization device for recovering elemental sulfur, which is characterized in that a gas-liquid distributor is arranged above a bioreactor, a sulfur precipitation tank is arranged below the bioreactor, and raw materials uniformly enter the bioreactor after passing through the gas-liquid distributor; and elemental sulfur particles generated by biological reaction enter a sulfur precipitation tank. The device disclosed by the utility model has the beneficial effects that high-efficiency recovery of sulfur and stable operation of the system are realized through gas-liquid distribution optimization, carrier immobilized microorganisms and the high-efficiency sulfur separation module.

The invention provides a device, a method and a system for optimizing sulfur deposition prevention and control measures of a high-sulfur gas field gathering and transportation system. The device comprises a bypass and a window, wherein the bypass and the window are arranged between a first-stage throttle valve and a last-stage throttle valve in the high-sulfur gas field gathering and transportation system and between a wellhead and a manifold; the bypass comprises a main flow imitating bypass pipe section and a parameter adjusting bypass pipe section; the imitated main flow bypass pipe section is a pipe section which is the same as the section from the first-stage throttle valve to the last-stage throttle valve and is connected in parallel with the first-stage throttle valve; the parameter adjusting bypass pipe section is composed of at least one parameter adjusting branch pipe section, and each parameter adjusting branch pipe section comprises a pipe section and at least one parameter adjusting unit arranged on the pipe section, each parameter adjusting unit is independently selected from a pipe diameter transformation unit, a temperature adjusting unit and a sulfur deposit trapping unit; and the windows are arranged on the parameter adjusting bypass pipe section and the main flow simulating bypass pipe section and are used for acquiring the sulfur deposition condition in the bypass.

The application discloses an ultrasonic networking system and method for natural gas well site pipeline sulfur deposition detection, and relates to the technical field of ultrasonic nondestructive testing. The system comprises a plurality of ultrasonic detection sub-stations, an edge computing gateway and a central server installed on the pipe wall. The detection sub-station comprises a multi-channel ultrasonic transducer array, an adaptive composite coupling component and an embedded data acquisition control module. The composite coupling component uses a miniature fluid driving component to pump a thixotropic high acoustic gel, realizing maintenance-free dynamic self-healing coupling. The control module uses CFAR detection and multi-feature classification algorithm to accurately separate the steel-sulfur-gas multi-interface echo to calculate the deposition thickness. The edge computing gateway gathers multi-point data to perform trend correlation analysis, and the central server constructs a multi-dimensional evolution model and outputs a graded warning accordingly. The application realizes non-invasive and continuous high-precision monitoring of pipeline sulfur deposition under non-stop working conditions, effectively predicting the risk of regional blockage.

The invention discloses a sulfur-carbon composite material and a preparation method thereof, and relates to the technical field of composite materials. According to the technical scheme, the method comprises the following steps: S1, adding a hydrogen sulfide aqueous solution into a reactor containing carbon powder at 5-25 DEG C, stirring while adding, and standing for 20-40 minutes; the ratio of the volume of the hydrogen sulfide aqueous solution to the total pore volume of the carbon powder is (0.9-0.95): 1; s2, adding a hydrogen peroxide aqueous solution, stirring while adding, and then standing; and S3, drying at 70-95 DEG C for 60-180 minutes to obtain the sulfur-carbon composite material. The hydrogen sulfide aqueous solution is adsorbed through the pores of the carbon powder, hydrogen peroxide is adopted to oxidize hydrogen sulfide into elemental sulfur and water, sulfur is deposited in the pores of carbon, and the sulfur-carbon composite material is formed after drying, so that the reaction is easy to occur, the sulfur deposition amount is controllable, the product is single, the product consistency is good, and the method is safe, reliable and low in energy consumption.

The invention discloses a sulfur deposition prediction method based on multiphase flow simulation and node analysis, and relates to the technical field of petroleum and natural gas industry, and the method comprises the following steps: building a physical model; running the data stream; establishing a pipe network topological relation; the sulfur deposition calculation comprises elemental sulfur solubility calculation, elemental sulfur precipitation judgment, precipitation phase state judgment, elemental sulfur precipitation amount calculation, critical flow velocity calculation and elemental sulfur deposition amount calculation; visualized display is carried out, the rough distribution condition of elemental sulfur deposition of the system is obtained through sulfur deposition calculation, and meanwhile, dynamic prediction of elemental sulfur under the specified frequency is achieved in combination with data flow operation. According to the prediction method, automatic early warning and visual display are realized, so that business personnel can know the dynamic distribution condition of sulfur deposition of the whole system, passive operation is changed into active operation, and the prediction method has a certain guiding significance for on-site sulfur prevention, sulfur control and sulfur treatment and assists in making a measure scheme and making a production decision.

The invention discloses a high-sulfur-content gas reservoir sulfur deposition prediction method, a readable storage medium and a high-sulfur-content gas reservoir sulfur deposition prediction device, and belongs to the technical field of high-sulfur-content gas reservoir development. The method comprises the following steps: establishing a first equation of sulfur saturation based on volume change caused by sulfur deposition in unit time; introducing a high-speed non-Darcy seepage effect to form an equation II; determining the gas-phase relative permeability considering the active degree of the water body through a substance balance principle, substituting the gas-phase relative permeability into the equation II, and constructing an equation III considering the non-darcy effect and the water body influence at the same time; and carrying out numerical integration to obtain a sulfur saturation prediction model. A computer program for performing the prediction method is stored in the readable storage medium. The prediction device comprises a memory, a processor and a terminal program capable of performing corresponding steps of the prediction method. The method comprehensively considers the influence of the high-speed non-Darcy effect and the active degree of the water body, achieves the precise prediction of the sulfur deposition of the high-sulfur-content gas reservoir, and is suitable for the prediction and evaluation of the sulfur deposition in the development process of the high-sulfur-content gas reservoir.

This invention discloses a temperature-switching adsorption device and its regeneration process for purifying high-hydrogen sulfide coal gas, belonging to the field of industrial by-product coal gas purification technology. The device includes an adsorption tower, a regeneration gas heater, a high-temperature gas-liquid separator, a regeneration gas cooler, and a gas-liquid separator. The adsorption tower is filled with a composite adsorbent layer that inhibits the catalytic oxidation of hydrogen sulfide. The high-temperature gas-liquid separator is equipped with a heating and insulation structure to maintain an operating temperature above the melting point of sulfur. This invention solves the problems of sulfur deposition in the adsorption bed and blockage of the regeneration cooler in traditional processes, extends the service life of the adsorbent, ensures long-term continuous operation of the device, and allows for the resource recovery of the separated liquid sulfur. It is suitable for purifying high-hydrogen sulfide coal gases such as coke oven gas and raw coal gas. The modification is simple, the investment is low, and it has good prospects for industrial application.

This invention discloses a method for dissolving elemental sulfur deposits in gas well production tubing for high-sulfur gas wells, belonging to the field of gas well desulfurization technology. Addressing the problems of uneven distribution of existing chemical desulfurizing agents and the high cost and well-condition dependence of physical desulfurization techniques, this method innovatively proposes using CO2 as a carrier to carry a vaporizable alkylalkoxysilane compound desulfurizing agent with a specific structure, forming a gaseous composite system. Injecting this system into the wellbore and allowing it to circulate within the tubing string efficiently dissolves and removes elemental sulfur deposited on the tubing wall. Furthermore, this system can modify the rock surface, making it hydrophobic and sulfur-repellent, thereby effectively preventing sulfur redeposition.

The present invention discloses a method and system for optimizing production allocation during the entire life cycle production process of a high-sulfur gas well, which relates to the technical field of oil and natural gas exploration and development, including: collecting sulfur-containing gas samples from the bottom of a high-sulfur gas well, and using indoor sulfur solubility test experiments to realize the identification and division of low-risk areas for sulfur deposition and high-risk areas for sulfur deposition under underground reservoir conditions during the entire life cycle production process of the gas well; when the gas well is in a low-risk area for sulfur deposition, a conventional gas well production optimization allocation method is preferably used; when the gas well is in a high-risk area for sulfur deposition, sulfur elemental precipitates in the form of solid particles within this interval, and a gas well production optimization allocation method that takes sulfur deposition into consideration is preferably used. The present invention forms production and development strategies for high-sulfur gas wells at different stages by dividing the low-risk area for sulfur deposition into high-risk areas and adopting different optimization allocation methods, which can greatly enhance the development potential of high-sulfur gas wells and provide technical support for the efficient development of my country's high-sulfur gas reservoirs.

The present application relates to the oil field chemistry and surfactant technical field, especially a kind of for high sulfur gas field sulfur particle anti-agglomerant and preparation method.The elemental sulfur anti-agglomerant provided in the present application includes the following mass fraction components: potassium stearate 2~5 parts, sodium lignosulfonate 3~9 parts, sodium p-toluenesulfonate 4~8 parts, inorganic salt adjuvant 11~23 parts and solvent 60~75 parts.The process flow of the elemental sulfur anti-agglomerant prepared in the present application is simple, and the economic cost is low, by adjusting the synergism and compatibility between surfactants, improve its dispersed sulfur particle performance, applicable to sulfur deposition prevention and control means in high sulfur gas field.

The invention relates to a sulfur-inhibiting foam scrubbing agent and a preparation method thereof, and belongs to the technical field of oil-gas field development and application chemicals. The preparation method of the sulfur-inhibiting foam scrubbing agent comprises the following steps: (1) reacting long-chain alkylamine with a sulfonic compound in water under the protection of inert gas to produce a sulfonated product; (2) adding quaternary ammonium salt into the sulfonation product obtained in the step (1) for reaction to generate an ampholytic surfactant; and (3) reacting the ampholytic surfactant obtained in the step (2) with an imidazole ring compound to prepare the sulfur-inhibiting foam scrubbing agent. The sulfur-inhibiting foam scrubbing agent disclosed by the invention can form stable foam in a high-temperature acid environment, and meanwhile, can remarkably inhibit elemental sulfur deposition and promote deposited sulfur dispersion, so that sulfur deposition is reduced, and accumulated liquid discharge is promoted.

The invention provides a preparation method and application of a coating, a test method and a sulfur deposition amount determination device, and mainly relates to the technical field of coating materials, a proper amount of a first product (a first product prepared from hydrophilic nano SiO2 and hydrophilic nano ZnO) is mixed into a butyl acetate solution, fluorosilicone resin and a curing agent which are combined according to a specific mass ratio; or mixing a proper amount of a first product (the first product prepared from hydrophilic nano Al2O3) into an ethyl acetate solution, epoxy resin and a curing agent which are combined according to a specific mass ratio, so as to prepare the coating which is qualified in coating quality and can improve the sulfur-phobic and low-sulfur performance, and the coating is applied to the inner wall of a shaft exploited in a high-sulfur-content gas field or the inner wall of a pipeline of a gathering and transportation pipeline system; the solid sulfur deposition condition in the shaft or a gathering and transportation pipeline system can be reduced from the source, and a new thought is provided for solving the problem of sulfur deposition in the shaft of the high-sulfur-content gas field. The invention further provides a method for testing the sulfur contact angle and the sulfur rolling angle on the surface of the coating and a device for measuring the sulfur deposition amount.

The invention provides a dynamic prediction method and system for sulfur deposition of a shaft of a high-sulfur-content gas reservoir. The method comprises the following steps: establishing a shaft mixed-phase flow model by considering transient effect, effective cylinder diameter, gas state equation, interphase slippage rate and drift equation factors; determining a sulfur fixation dissolution model according to the sulfur fixation physical dissolution experiment data, and establishing a sulfur precipitation model; a sulfur transport model is established by combining the sulfur deposition model according to a shaft sulfur deposition mixed-phase flow mechanism; and a shaft mixed-phase flow model and a sulfur transport model are solved by using a set efficient numerical discrete semi-implicit solution strategy, shaft sulfur deposition dynamic parameters are predicted and solved, shaft sulfur dynamic monitoring is realized, and data support is provided for sulfur removal operation. By the adoption of the scheme, the problems that an existing research is not comprehensive in considering mechanism and insufficient in accuracy and effectiveness can be solved, the important mechanism of shaft non-isothermal multiphase flow is fully considered, modeling accuracy and solving efficiency are considered, and reliable technical support is provided for shaft sulfur deposition prediction and law research.

The present invention discloses a method for predicting sulfur deposition in high-sulfur fractured gas reservoirs based on the fractal medium theory. This method collects experimental data on the sulfur solubility of acid gases under the temperature, pressure ranges and natural gas composition conditions of typical high-sulfur gas reservoirs, and uses statistical analysis and multiple regression analysis methods to establish a prediction model for the sulfur solubility of elemental sulfur applicable to such gas reservoirs. On this basis, combining the fractal medium theory, gas-water seepage theory and sulfur solubility pressure gradient function, a mathematical model for predicting sulfur deposition in gas wells of high-sulfur fractured gas reservoirs is established, and comparisons and verifications are carried out. The purpose of the present invention not only provides theoretical guidance and technical support for the reliable assessment of the sulfur plugging damage status of reservoirs in high-sulfur fractured gas reservoirs, but also lays a foundation for the optimization of the operating system of high-sulfur gas wells, the decision-making of plug removal measures and the treatment of sulfur deposition in gas reservoir reservoirs.

The invention discloses a pipeline sulfur deposition detection method, system and equipment, a storage medium and a program product, and the method comprises the following steps: preparing a detection simulation device containing sulfur deposition as a detection object, and designing and monitoring the sulfur deposition in the detection object; based on the geometrical shape of a detection object, a detection probe is designed in a targeted manner; the method comprises the following steps: detecting a detection object by using a detection probe, acquiring a detection signal of the detection object, and preprocessing the detection signal; and carrying out waveform analysis on the preprocessed detection signal, and calculating the corrosion degree and the sulfur deposition thickness of the detected object. According to the invention, accurate detection and thickness calculation of sulfur deposition in the pipeline can be realized.

The invention discloses an indoor simulation device and method for sulfur deposition of a high-sulfur-content water-containing gas reservoir, and belongs to the technical field of exploration and development of the high-sulfur-content gas reservoir. The indoor simulation device comprises a sampling steel cylinder, the sampling steel cylinder is connected with a core holder through a first gas pipe, a first intermediate container is further arranged on the first gas pipe, and a first water adding assembly is arranged at the lower end of the first intermediate container; the core holder is connected with a second intermediate container through a second gas pipe, a second water adding assembly is arranged at the lower end of the second intermediate container, the second gas pipe is further connected with an exhaust pipe, and a gas-water separator, a gas meter, a desulfurizer and an alkali liquor tank are sequentially arranged on the exhaust pipe. According to the invention, a core water construction process and a production pressure difference control system are established, sulfur deposition damage experiment research of the high-sulfur-content gas reservoir in different water breakthrough stages and production systems can be simulated, sulfur deposition positions and distribution characteristics under water conditions can be researched, and influence factors and change characteristics of sulfur deposition in the high-sulfur-content water reservoir are determined.

The utility model discloses a heat exchanger for sulfur combustion, and belongs to the technical field of heat exchangers, the heat exchanger comprises a support frame, a smoke box is arranged on the support frame, a heat exchanger is arranged in the smoke box, a shell is arranged on the heat exchanger, and a smoke inlet is formed in the smoke box; the heat exchanger solves the problem of solid sulfur precipitation in advance, the problem that solid sulfur is attached to the heat exchanger is solved to a great extent, the service life of the heat exchanger is prolonged, the heat exchange efficiency of the heat exchanger is kept, and the maintenance cost is reduced; in the field of bromine, recovery of heat lost due to the fact that sulfur dioxide gas in sulfur combustion must be cooled becomes reality, and great energy consumption is saved for bromine manufacturers.

This invention provides a hydraulic rotary desulfurization tool for oil tubing, including a rotary scraper module. The rotary scraper module includes a scraper housing and multiple variable-diameter scraper blocks. Inside the scraper housing, a mandrel is floatingly supported by a base and an elastic element. Multiple wedge-shaped push blocks are provided outside the mandrel, each with an inclined surface and a dovetail groove. Dovetail blocks are provided inside the variable-diameter scraper blocks, and these dovetail blocks are slidably engaged within the inclined dovetail grooves. When working fluid is input, the mandrel compresses the elastic element downwards under liquid pressure, causing the wedge-shaped push blocks to move downwards. Simultaneously, during the downward movement of the wedge-shaped push blocks, the variable-diameter scraper blocks move outwards circumferentially along the scraper housing under the influence of the inclined surface force of the wedge-shaped push blocks, thus achieving the variable diameter of the rotary scraper module. The beneficial effects of this invention are: it can convert the hydraulic energy of the working fluid into mechanical energy, removing sulfur deposits from the inner wall of the oil tubing, improving the desulfurization efficiency of the oil tubing without damaging the well wall, and ensuring long-term normal production operations of the gas well.

The invention discloses a high-sulfur-content gas well gas production pipe column elemental sulfur deposition and dissolution removal method, and belongs to the technical field of gas well sulfur removal. In order to solve the problems that an existing chemical sulfur dissolving agent is uneven in distribution, a physical sulfur removal technology depends on well conditions and the cost is high, CO2 is innovatively used as a carrier, a vaporizable alkyl alkoxy silane compound sulfur dissolving agent with a specific structure is carried, and a gaseous composite system is formed. The system is injected into a shaft and circularly flows in a pipe column, elemental sulfur deposited on the pipe wall can be efficiently dissolved and removed, in addition, the system can modify the rock surface and make the rock surface hydrophobic and sulfur-repellent, and therefore secondary deposition of sulfur is effectively prevented.

The invention discloses an optimized production allocation method and system in the full-life-cycle production process of a high-sulfur-content gas well, and relates to the technical field of petroleum and natural gas exploration and development.The method comprises the steps that sulfur-containing gas samples at the bottom of the high-sulfur-content gas well are collected, and an indoor sulfur solubility test experiment is utilized; identification and division of a sulfur deposition low-risk area and a sulfur deposition high-risk area under the underground reservoir condition in the full-life-cycle production process of the gas well are achieved; when the gas well is in a sulfur deposition low-risk area, a conventional gas well yield optimization production allocation method is preferably selected; when the gas well is in a sulfur deposition high-risk area, elemental sulfur in the area is separated out in the form of solid particles, and a gas well yield optimization production allocation method considering sulfur deposition is preferably adopted. According to the method, the low-risk area and the high-risk area of sulfur deposition are divided, different optimized production allocation methods are adopted, production and development strategies of the high-sulfur-content gas well in different stages are formed, the development potential of the high-sulfur-content gas well can be greatly improved, and technical support is provided for efficient development of the high-sulfur-content gas reservoir in China.

The invention discloses a high-sulfur-content gas well shaft sulfur deposition clearing device and a clearing method.The clearing device comprises a power pipe section, a clearing pipe section and a detection pipe section, a rotary propelling mechanism is arranged on the power pipe section, and the upper end of the clearing pipe section is connected with the output end of the rotary propelling mechanism; scraping blades and a solvent spraying assembly are arranged on the circumferential outer wall of the cleaning pipe section, the solvent spraying assembly is located below the scraping blades, the detection pipe section and the lower end of the cleaning pipe section are coaxially fixed, a detection assembly is arranged on the detection pipe section, and the detection assembly comprises a supporting shaft, a detection rod, a fixing rod, an elastic telescopic rod, a detection module and a control system. Advanced detection can be carried out on sediments before removal through the arranged detection assembly, so that the control system can pre-judge whether the sediments attached to the shaft are within the range of safe scraping removal capacity or not, if the sediments exceed the range of safe scraping removal capacity, the combined operation of chemical softening and mechanical scraping is achieved, waste of chemical agents is reduced, and pollution is reduced.

The invention relates to the technical field of data analysis, and discloses a shaft and pipe network production allocation risk assessment system for a sulfur-containing gas reservoir, and the system comprises an integrated model which comprises a gas reservoir model, a shaft model and a pipe network model; the configuration module is used for configuring configuration parameters of the integrated model and inputting simulated production allocation value parameters of each production node; a storage module; the extraction module is used for extracting the production allocation result of the integrated model stored in the storage module; the early warning judgment module is used for comparing the production allocation result with configuration parameters so as to judge whether early warning is carried out or not; the sulfur deposition judgment module is used for calculating the sulfur solubility according to the production allocation result and comparing the sulfur solubility with the actual sulfur content so as to judge whether to give an early warning or not; and the display module is used for displaying the configuration result and the judgment results of the early warning judgment module and the sulfur deposition judgment module. The safety and feasibility of the production allocation scheme can be improved.

The invention discloses a tool used in the technical field of high-sulfur-content gas field development, and particularly relates to an intelligent sulfur removal tool. The device mainly comprises a shell part, a clamping module, an intelligent driving module and a scraping module, wherein the intelligent driving module comprises an enabling unit, an LED, a camera, a motor A, a motor B and a motor C; according to the invention, the tool is lowered to a position where desulfurization operation needs to be carried out through a steel wire rope and a cable, the enabling unit identifies signals through an IMU signal and a camera, and the MCU controls the motor A, the motor B and the motor C to drive the clamping module and the scraping module to carry out two working modes of easy desulfurization and difficult desulfurization; and identifying and judging whether the tool needs to carry out secondary desulfurization operation or not through the camera. By arranging the new gas flow channel, the desulfurization operation can be carried out during production, namely under the condition that the yield is reduced slightly. The treatment efficiency is high, sulfur deposition separated out of the inner wall of the oil pipe in the later period of gas field development can be effectively removed, and the development cost is reduced.

The invention relates to the technical field of data prediction processing, and discloses a residual life prediction method and system for an extra-high sulfur-containing bimetallic gas transmission pipeline, and the method comprises the steps: obtaining strain data, temperature data, outer layer corrosion data and sulfur deposition data; performing dynamic feature extraction on the data to obtain corrosion environment features and material state features; establishing a synergistic corrosion kinetic model based on the characteristic data, and establishing a corrosion rate equation by considering the synergistic effect of H2S and CO2; based on the multi-physics field coupling model, combining the comprehensive material data, the monitoring data and the gas data to establish a comprehensive life prediction model; predicting the residual life, and outputting a prediction result; and comparing and analyzing a prediction result and field detection data, and adjusting and optimizing model parameters according to an analysis result. By constructing the multi-physical field coupling model and the multi-modal intelligent sensing system, the precision of predicting the life of the bimetallic pipeline under the ultrahigh sulfur-containing working condition is improved, and the adaptability and reliability of the prediction method are improved.

The invention relates to a high-sulfur-content gas reservoir gas well shaft sulfur deposition prediction method, device and equipment. A temperature-pressure coupling equation is constructed to calculate the temperature and the pressure of each well depth position, then the sulfur solubility of each well depth position is calculated according to the temperature and the pressure, whether elemental sulfur is separated out at each well depth position is judged according to the sulfur solubility, if yes, whether sulfur is deposited at the well depth position where sulfur is separated out is judged, and if yes, the sulfur content of the well depth position where sulfur is separated out is judged. If yes, the sulfur precipitation amount of the deposited sulfur well depth position is calculated, and finally the sulfur deposition thickness of the deposited sulfur well depth position is depicted through the shaft inner diameter variation of the deposited sulfur well depth position. According to the embodiment of the invention, the sulfur deposition condition in the shaft of the high-sulfur-content gas well can be simply and reasonably predicted, the gas production speed of the gas well can be quantitatively researched more visually and deeply, and a foundation is laid for a production scheme, shaft protection and the like of the gas well of the high-sulfur-content gas reservoir in the future.

The embodiment of the invention relates to the technical field of oil and gas field development, and provides a sulfur deposition quantity prediction method, device and equipment, the method comprises the following steps: calculating sulfur deposition parameters of different well depths in a wellbore at a specified time period, the sulfur deposition parameters comprising wellbore fluid density, wellbore fluid viscosity and sulfur solubility; according to the shaft sulfur deposition parameters of the different well depths in the shaft, the sulfur deposition thicknesses of the different well depths in the shaft are obtained through calculation; and according to the sulfur deposition thicknesses of different well depths in the shaft, the sulfur deposition prediction amount of the shaft in the specified time period is obtained through calculation. According to the embodiment of the invention, the actual conditions of different positions in the shaft can be reflected more accurately, so that the deviation between the prediction result and the actual sulfur deposition amount is reduced, and the prediction accuracy is improved.

The invention discloses an online sulfur dissolving evaluation device and a sulfur dissolving evaluation method, and relates to the technical field of gas field development evaluation. The online sulfur dissolving evaluation device comprises a sulfur dissolving reaction unit, a gas supply unit, a feeding unit, a liquid pumping unit and a circulating unit, the sulfur dissolving reaction unit comprises a reaction cylinder, the reaction cylinder is provided with a heating piece and a spiral flow channel piece, the gas supply unit is provided with a first pipeline, the circulating unit comprises a gas-liquid two-phase separator, the gas-liquid two-phase separator is provided with a recovery pipeline, a gas pipe and a liquid pipe, the first pipeline is provided with a pressure gauge I, and the recovery pipeline is provided with a pressure gauge II. The sulfur dissolving evaluation method comprises the following steps: firstly forming a sulfur deposition site, then introducing a sulfur dissolving agent, and finally carrying out sulfur dissolving evaluation according to a pressure difference change condition. And the circulating unit is opened to collect the water sample, and the amount of dissolved solids is obtained to evaluate the dissolved sulfur. The online sulfur dissolving evaluation device and the sulfur dissolving evaluation method have the advantages of being accurate in environment simulation, good in reflecting condition simulation effect and accurate in effect evaluation.

The application discloses a kind of imbibition type low corrosive sulfur deposition plugging cleaning agent and preparation method thereof, and relates to the technical field of oil and gas field development, comprising: cleaning main agent, the cleaning main agent is composed of sulfur-containing organic solvent and organic amine solvent;Auxiliary agent, the auxiliary agent is composed of hydroxyl-containing organic amine and benzene ring-containing organic amine;Imbibition agent.The imbibition type low corrosive sulfur deposition plugging cleaning agent and preparation method thereof proposed in the application have higher sulfur solubility, lower corrosion rate under the condition of not adding corrosion inhibitor, greatly improve cleaning efficiency.