358results about How to "Easy to use on site" patented technology

The invention provides an integrated coiled tubing defect detection device. The coiled tubing defect detection device comprises an upper half detection unit and a lower half detection unit, and a passage for coiled tubing to pass through is formed between the two detection units after the two detection units are matched and assembled with each other, and internally provided with a magnetism generating device, a magnetism leakage detection probe, an ellipticity detection probe and a guide device which are arranged on the two detection units; a measuring arm assembly kit for guiding the two detection units in moving along the coiled tubing is connected to the outsides of the detection units. The device can achieve real-time and precise detection of the wall thickness, outer diameter, ovalityand various physical defects such as corrosion, cracks, mechanical damage and pitting corrosion of coiled tubing columns.

This invention relates to a dope combination. The film coating it formed is amorphous gelatinous substance, base unit is three-dimensional network formed by connection of silicon - oxygen tetrahedron and aluminium - oxygen tetrahedron. end product takes electrovalent bond and covalent bond as main, vander waas bond as complement, possess linkage structure of organic heavy polymer, and double property of inorganic polymer and organic polymer. The unique performance supple the insufficiency of organic high molecular polymer. It possesses favorable performance of acid-proof, alkali-proof, impervious, antifreeze, seawater resistance and high temperature resistance.

The invention relates to equal-pressure virtual isolation check valve sealing test method and equipment, which are realized through an equal-pressure virtual isolation sealing plug and a leak detector by the following steps of: firstly arranging the equal-pressure virtual isolation sealing plug in an outlet pipe of a tested check valve; filling pressure in the sealing ring and the annular space of the sealing plug through the test fluid of the leak detector, and carrying out virtual isolation on the outlet pipe of the tested check valve through a formed equal-pressure ring; then carrying out fluid filling on a cavity between the equal-pressure virtual isolation sealing plug and a valve plate in the tested check valve through the leak detector, and keeping the pressure in the cavity of the tested check valve to be constant; and subsequently detecting the supplemented flow value of the fluid, i.e. the leakage ratio of the valve, wherein the test fluid not only can be gas, but also can be a liquid. The invention has the characteristics of accurate and reliable testing result, short working time of testing personnel in a high-dose region, low acceptable dose and less time for installing an equal-pressure isolation plug body 1. A low-pressure sealing test is adopted for test pressure, and the test pressure is generally consistent with the test pressure of a nuclear power plant containment.

The invention provides slippery water for shale gas fracturing. The slippery water is prepared from the ingredients in percentage by weight: 0.08-0.3wt% of an emulsion friction reducer, 0.3-1.0wt% of a clay stabilizer, 0.3-1.0wt% of a discharge aiding agent, 0.5-2.0wt% of potassium chloride, 0.05-1.0wt% of a bactericide and the balance of water. Specifically, the emulsion friction reducer is an anionic polyacrylamide copolymer, is prepared through taking acrylamide as a main body structural unit, adding an ionic structural unit and a functional monomer and copolymerizing, and has the viscosity-averaged relative molecular mass of 6-9 millions and the intrinsic viscosity of 1,600-1,860mL / g. According to the slippery water provided by the invention, the used additives are high in dissolution rate and uniform in dispersion, and during field application, the on-line preparation of the slippery water can be realized by using continuous preparing or in an on-line preparing device, so that the technical requirements of a shale gas reservoir on high-displacement (10-20m<3> / min) and high-liquid-volume (10,000-50,000m<3>) fracturing construction are met.

The invention relates to a three-dimensional point coordinate measuring method and a measuring apparatus thereof. According to the invention, the problems on the flexibility of the system and the measuring speed are solved; therefore, the field measurement and the measurement of points that are not easy to be measured can be allowed, and the manufacturing cost can be reduced. According to the scheme of the method, a camera coordinate system is established; three-dimensional coordinates of marking points are calibrated in a light pen coordinate system, wherein the marking points are fixed on a measuring probe; spatial three-dimensional coordinates of implementation measuring time of a set of fixed marking points on the measuring probe are calculated in the camera coordinate system, and three-dimensional coordinates of the set of fixed marking points on the measuring probe are also calculated in a measuring probe coordinate system; and a logical relation of the two coordinate systems of the implementation measuring time is established; a three-dimensional coordinate of a spherical point of a spherical measuring head is calibrated in the measuring probe coordinate system; based on the above results, when the measuring is carried out, a spherical measuring head in the front of the measuring probe is contacted with a measured point to obtain a measuring point, and a coordinate of the measuring point is calculated. The measuring apparatus comprises supports, cameras, a measuring probe, a matched computer and matched software. The apparatus has two cameras, which are fixed on supports. The spherical measuring head is fixed at the front of a T-shaped rod, and a set of marking points, which are in a T-shaped form, are fixed on the T-shaped rod. According to the invention, the system has good flexibility, and the measuring speed is fast; besides, the measurement of a measuring point that is not easy to be measured is also allowed, and the cost is low.

A process for preparing the alpha-olefine as the drag reduce used for delivering oil in pipeline includes such steps as loading monomers into reactor, adding catalyst while stirring in the condition of isolating air, adding the oil-soluble polyester, polyether or ester-ether copolymer solution to which the alpha-olefine polymer is not dissolved, and reacting at -50-20 deg.C for 3-10 days. Its advantages are simple process, and high molecular weight, high effect, high stability and low viscosity of product.

The invention discloses a titanium carbide ceramic-enhanced visible arc self-shielded flux-cored wire for high-chromium cast iron, and the flux-cored wire provided by the invention comprises the following chemical components in percentage by weight (wt%): 60 to 70% of high-carbon ferrochrome, 1 to 2% of high-carbon ferromanganese, 1 to 3% of ferrosilicon, 1 to 3% of ferrovanadium, 1 to 3% of ferromolybdenum, 2 to 8% of TiC, 15 to 25% of graphite, and 1 to 2% of aluminum / magnesium powders; and the flux-cored wire has a low-carbon steel strip serving as an outer wrapper. The flux-cored wire is made by use of flux-cored wire production equipment which has a flux powder filling rate of 37%to 45%, and drawn by a wire drawing machine 2 to 5 times until the outside diameter of the flux-cored wire reaches the level F4. The flux-cored wire disclosed by the invention can be applied to overlay-welding under the conditions of no preheating before welding and no heat treatment after welding, and is very convenient in on-site use. By virtue of overlay-welding using the flux-cored wire disclosed by the invention, deposited metals have a high hardness up to HRC63-67 and better wear resistance andare not liable to stripping, and the service lives of large-sized high-chromium cast iron wear-resistant parts are 2 to 4 times those of integrally-machined parts.

This invention relates to an optical measuring technique of three-dimensional coordinates. The measuring system of optical pen-style portable three-dimensional coordinates comprises CCD camera, computer and optical pen used as measurement sensing part. There install three optical targets in the pen and a ball probe on the pen point. The centers of the three optical targets and the ball probe lie in the same line. The optical targets are obtained by the camera, which sends the image to computer, thus realizes the three-dimensional coordinates measuring of contact points through computer. The advantage of this invention lies in that it can flexibly adjust the camera position according to the traits of the object to be measured and facilitate the application on spot and increase the flexibility of the system.

The invention discloses an oil-gas pipeline high-consequence area identification system and identification method. The identification system comprises an oil conveying pipeline high-consequence area identification subsystem and a gas conveying pipeline high-consequence area identification subsystem. The oil conveying pipeline high-consequence area identification subsystem comprises oil conveying pipeline high-consequence area total-risk contribution value computing unit and an oil conveying pipeline high-consequence area judging unit. The gas conveying pipeline high-consequence area identification subsystem comprises a gas conveying pipeline high-consequence area total-risk contribution value computing unit and a gas conveying pipeline high-consequence area judging unit. According to the identification method, existing subjective and extensive identification methods at home and abroad are abandoned, various factors influencing pipeline leakage are taken into consideration comprehensively, the systematic identification system is set up, the calculation thought and the method are simple, the site fitness of the analysis result is good, high-consequence pipe sections of different types of a whole pipeline can be identified, and engineering technical personnel can work out the scientific countermeasures according to the situations of the pipe sections.

The present invention discloses a preparation method of light foamed concrete and its main machine. Said light foamed concrete is made up by using concrete, foaming agent and compressed air through a certain preparation method. Said preparation method includes metering and mixing regulation control technique by adopting combination of manual regulation valve and adjustable electronic regulation valve and pneumatic diaphragm pump slurry conveying technique. Its main machine includes compressed air supply device, foam preparation device and slurry and foam mixing device, etc.

The invention relates to a mobile power box, which has the advantages of independent use, safety and convenience. The mobile power box comprises a box body; the box body is provided with a winding roller inside in a relative rotation way; a control panel is positioned above the winding roller; a conducting wire is wound onto the winding roller; one end of the winding roller is connected with a crank; and the crank is positioned outside the box body. One side wall in the box body is fixedly connected with a rotary supporting seat, and the side wall of the box body opposite to the rotary supporting seat is provided with a shaft passing hole; one end of the winding roller is provided with a rotary supporting shaft, the other end of the winding roller is provided with a rotary hole passing shaft, the rotary supporting shaft is positioned in the rotary supporting seat, the rotary hole passing shaft passes through the shaft passing hole, and the free end of the rotary hole passing shaft is connected with the crank; and the side wall of the box body is provided with a conducting wire inlet and outlet which corresponds to the winding roller, and the conducting wire passes through the conducting wire inlet and outlet. The mobile power box belongs to a 220V power safety control device, and is suitable for various users or enterprises using temporary power supplies.

The invention relates to a polycore cable sequencing method based on digital frequency-modulation encoding and a device thereof. The device consists of a transmitter and a receiver, which are connected with the two ends of a polycore cable to be detected; during measurement, the transmitter designs digital encoded signals for each cable to be detected and sends the encoded signals to the cable to be detected after frequency modulation; a receiving end connects any two cables by a measuring probe, the received signals of the two cables obtain effective received signals of the cable marked as 'plus' end through a difference circuit; the effective received signals are modulated, thus obtaining the sequence numbers of connected cables and displaying the result. The measuring device adopting the measuring method of the invention has quite small volume is convenient for being used on site. No public reference lines are needed to during measurement, In addition, the adoption of the measuring method of the invention ensures higher reliability of the measurement and long-distance test.

The invention relates to an environmental-friendly gel plugging agent applicable to a low-temperature oil pool and applications of the gel plugging agent. The gel plugging agent is prepared from 0.2%-0.6% of ampholytic polyacryamide, 0.5%-2.0% of an organic zirconium cross-linking agent solution, and the balance of water. The gel plugging agent is used for deep water shut-off and profile control constructions in the low-temperature oil pool of 25-35 DEG C and by virtue of the plugging agent, the recovery rate of crude oil can be raised. The gel plugging agent can form a non-flowing high-strength gel system at low temperature and has low viscosity and good injectivity; without toxic chemical materials such as chromium type cross-linking agents, the gel plugging agent is conductive to environmental friendliness.

The invention discloses a drilling and punching integrated hydraulic drill bit which comprises a drill bit body. A through hole, extending axially, penetrates the whole drill bit body and comprises a nozzle hole portion in the front and a valve hole portion in the middle. The back end of the nozzle hole is designed into a conical surface, and a reversing valve is arranged in the valve hole portion and comprises a protrusion block and a spring. The protrusion block is provided with a connection hole extending axially and a side hole communicated with the connection hole, the front end of the connection hole is blind, the front end of the protrusion block is designed into a conical surface which is in fitting seal with the conical surface of the back end of the nozzle hole portion. The drill bit body is further provided with a side nozzle hole, and an inner end port of the side nozzle hole leads to a big hole of the valve hole portion while an outer end port of the side nozzle hole leads to the surface of the outer ring of the drill bit body. The drilling and punching integrated hydraulic drill bit overcomes defects of existing hydraulic punching devices. Drilling and punching integration is realized by the aid of the automatic reversing valve. Secondary breaking of big cinders is realized by the aid of secondary breaking tools arranged reasonably, so that blocking of discharging passages due to falling of the big cinders is avoided.

The invention relates to a field calculating method for confirming influence on unit economy by exhaust steam pressure of a power plant turbine. The field calculating method is based on a real-time computing function of DCS, influence of change of inlet steam flow of the turbine, main steam inlet steam pressure of the turbine, main steam inlet steam temperature, hot reheat inlet steam pressure and hot reheat steam inlet steam temperature in the process of operation of a unit is excluded, and only value of influence on a unit heat rate by the exhaust steam pressure of the turbine is calculated. The field calculating method solves the problem of accuracy of factors of influence on the unit heat rate by exhaust steam pressure change of the turbine adopted in energy conservation optimization operation or technical improvement of a power plant, and is simple and convenient to use on a field.

The invention discloses an aero-engine rotor-stator rubbing position identification method based on the application of cepstrum and belongs to the technical field of aero-engine fault diagnosis. According to the method, first, aeroengine case vibration acceleration signals of different rubbing positions of an aero-engine are obtained; next, by means of the cepstrum analytical method, Low-dimensional feature parameters are extracted, and training samples are formed; then, training is carried out on a training sample set by means of sorting algorithms, and a rubbing position sorter is obtained; last, rubbing positions are identified with the trained sorter. Only with an acceleration sensor, can rubbing positions of the aero-engine be effectively identified. Compared with the prior art, the method is simple and suitable for real-time diagnosis in the field.

The invention relates to a steel rail corrugation laser measuring device. The steel rail corrugation laser measuring device has a structure that: both ends of the device are provided with a bracket which can be arranged on a steel rail respectively; both sides of the top of each bracket are fixedly provided with guide rails; a sliding block is sleeved on the guide rails; the laser head of a laser displacement sensor is fixed to the sliding block; the serial port and the universal serial bus (USB) interface of the laser displacement sensor are connected with the serial port and the USB interface of a computer respectively; the bracket on one end is fixedly provided with a motor; the shaft of the motor is connected with a fixed pulley 1; the bracket on the other end is provided with a fixed pulley 2; one end of a steel wire is connected with the sliding block, and the other end of the steel wire rounds the fixed pulley 1 and the fixed pulley 2 and then is connected with the sliding block; the shaft end of the motor is connected with an incremental photoelectric encoder; and the signal output end of the incremental photoelectric encoder is connected with the control signal input end of the laser displacement sensor. The measuring device can conveniently measure the condition of corrugation on the surface of the steel rail in the site and has the advantages of high automation degree, convenience for operation, high measurement accuracy and high reproducibility of test data.

The invention discloses an oriented fracturing device for a horizontal well and is applied to oriented fracturing construction of horizontal wells of petroleum. The oriented fracturing device is characterized in that a lower joint of a first oriented spray gun centralizer is connected with a central pipe of a first counter weight shaft; a coupling of the first counter weight shaft is connected with one end of an oriented spray gun; two axial convex keys of the joint of the first counter weight shaft are respectively inserted into two axial key grooves of the oriented spray gun; the other end of the oriented spray gun is in threaded connection with the coupling of a second counter weight shaft; two axial convex keys of the joint of the second counter weight shaft are respectively inserted into two axial key grooves at the other end of the oriented spray gun; and a central pipe of the second counter weight shaft is in threaded connection with an upper joint of a second oriented spray gun centralizer. The oriented fracturing device has the effects that the nozzle of the oriented spray gun can be automatically adjusted to a direction at which fracturing transformation is required to be performed.

The invention discloses a micro-fluidic chip system which comprises a micro-fluidic chip and a temperature control module. The micro-fluidic chip comprises a substrate, a structural piece and a cover piece. The substrate is located at the bottom of the micro-fluidic chip. The structural piece is arranged on the substrate and comprises a reaction pool. The cover piece is configured to cover the structural piece, a sealing cavity is formed between the cover piece and the structural piece, the reaction pool is located under the sealing cavity and a paraffin section is cured on the side, forming the sealing cavity, of the cover piece. The temperature control module is configured to be fixed to the micro-fluidic chip and used for heating and carrying out temperature measurement and control on reactants in the reaction pool. In addition, the system may further comprise a detection module. The micro-fluidic chip system can achieve quantitative detection and qualitative detection for isothermal amplification.

Organic antifriction composition for drilling fluid is composed of, prepared in 100%, 45-65 parts of organic acidic metal salt, 15-35 parts of mineral oil, 5-10 parts of emulgator, and 8-15 parts of extreme-pressure additive. During preparation, the components are proportionally added into a reactor and react for 4-6 hours at 50-90oC, producing yellow or brown liquid which is antifriction composition. The antifriction composition can form a high-intensity extreme-pressure lubricating film to be antifriction through its organic negative ions adsorbing to the surface of a casing or a drilling rod, and can replace or partially replace lubricant, using cost of lubricant is reduced, and the antifriction composition is applicable to highly-deviated wells, horizontal wells, high-density drilling fluid and long-cycle prospecting wells.

The invention relates to an underground reservoir porosity measurement method during drilling. When a drilling time meter, a gas logging apparatus, a comprehensive logging meter, a drilling instrument and other logging devices are used for collecting and recording logging drilling time, a reservoir porosity measurement value during drilling POR is determined by a cover layer drilling time ROPn, a reservoir drilling time ROPs, a cover layer reference porosity PORb and an area ground surface incompact formation porosity PORa. A ratio RROP of the cover layer drilling time ROPn and the reservoir drilling time ROPs is used for evaluation of the reservoir. The evaluation result is shown to users or supplied to the users through the internet so that the users can evaluate the property of the reservoir and reservoir fluid. The underground reservoir porosity measurement method during drilling is convenient to use on site, easy to operate, wide in application range and reliable in results. The absolute value of relative error is less than or equal to 15%, and the absolute value of absolute error is less than or equal to 2%. The underground reservoir porosity measurement method during drilling can meet the requirement for logging evaluation reservoir and judging the property of reservoir fluid.

The invention relates to an AC test device for operation characteristics of transformer on-load tap changer switch, which belongs to a test device. A power supply switch is connected with an internal power module; the internal power module and an external power interface are respectively connected with a control switch; the control switch is connected with a tested interface of the on-load tap changer; the tested interface of the on-load tap changer is connected with a voltage and current sensor; the voltage and current sensor is connected with an acquisition board; the acquisition board is connected with a master processor; the master processor is connected with a printer, a memorizer and a displayer. The device has the advantages that the applicable scope is wide; the operation characteristics of a single-phase transformer and an electric reactor tap changer are tested; an indirect tap changer test mode is provided for some special transformers, such as a rectiformer; the transformer tap changer works under the AC working condition as the test by AC method is closest to the actual operating condition.

The invention discloses a compound high-temperature acidizing corrosion inhibitor based on pyridine quaternary ammonium salt. The compound high-temperature acidizing corrosion inhibitor is prepared from components in parts by weight as follows: 20-30 parts of a corrosion inhibitor main agent, 2.0-2.5 parts of a synergist, 0.2-1.0 part of a dispersing agent, 0.5-1.0 part of propargyl alcohol, 0.2-1 part of an emulsifier, 2.5-6.0 parts of triethanolamine, 0.8-1.0 part of a surfactant and 60-70 parts of a solvent, wherein the corrosion inhibitor main agent is the pyridine quaternary ammonium salt prepared from 3-picoline and benzyl chloride through a reaction; the synergist is a mixture of potassium iodide, antimonous oxide and antimony trichloride in a weight ratio being (2-3):(1-2):(1-2). According to the compound high-temperature acidizing corrosion inhibitor based on the pyridine quaternary ammonium salt, the requirement of oilfield acidizing construction at the temperature of 120-160 DEG C is met, a corrosion inhibitor formula which is stable in property and good in corrosion inhibition performance, facilitates site construction and has cost advantage is provided, and the corrosion inhibitor has the characteristics that compatibility with commonly used acidizing additives in site, commonly used imidazoline corrosion inhibitors and other types of quaternary ammonium salt corrosion inhibitors is good, mixed use can be realized, construction is convenient and highly safe, no pollution is produced, transportation and storage are convenient, the cost is low and the like.

The present invention provides a polysiloxane resin (PAOS) containing a side group with alkoxy, the preparation method and application. The methyl silicone containing hydrogen, alcohol, solvent and catalyst are used to prepare PAOS under certain conditions. The PAOS can react with water in the air at the room temperature or under heated conditions; the liquid state is changed into the solid state to form the sealing material matrix resin with no foam at a high temperature and of chemical corrosion resistance and high-temperature resistance; the solidification method is simple and easy for scene use; the PAOS also can be used as crosslinker for hydroxy-terminated polysiloxane; the PAOS has the enhancing function in situ while crosslinking. The present invention has good application prospects in high-temperature resistant composite materials, such as matrix resin, coating, adhesive, sealant, crosslinker and so on.

The invention discloses a gas inflation device of sulfur hexafluoride and nitrogen mixed gas and an operation method of the gas inflation device. Four ports of a four-way valve set communicate with agas inflation unit, a to-be-inflated electric power equipment cavity, a gas state parameter detection unit and a gas uniform buffering unit correspondingly. The gas inflation unit comprises an SF6 gasdistribution branch, an N2 gas distribution branch and a feedback control adjusting module. A gas outlet of the SF6 gas distribution branch and a gas outlet of the N2 gas distribution branch communicate with the gas inlet of the feedback control adjusting module. The SF6 gas distribution branch and the N2 gas distribution branch comprise gas storage bottles, pressure reducing valves, gas pressuremeters and gas flow control valves. The gas state parameter detection unit is used for detecting the gas pressure and mixing ratio of mixed gas in the to-be-inflated electric power equipment cavity.The gas uniform buffering unit comprises a compressor and a buffering tank. The gas inflation device is a portable gas inflation device, is high in mixing ratio control precision, and can reduce the time required by mixing the mixed gas.

The invention discloses a preparation method of a phenol amine aldehyde block polyether low-temperature demulsifier and the low-temperature demulsifier prepared by means of the method. The method comprises the following steps: firstly performing condensation polymerization on a phenol matter, an amine matter and an aldehyde matter to prepare phenol amine aldehyde resin; and then performing a reaction with an epoxy compound to obtain final product. The demulsifier prepared by the preparation method disclosed by the invention has the advantages of being good in alkaline solubility, good in cleaning effect, free of irritant smells, convenient for field use and the like. The most applicable temperature is 45 DEG C, but the demulsifier still has a relatively good effect when the temperature is low to 41 DEG C. The demulsifier has an excellent demulsifying effect, has a good effect on the condition that the demulsifying difficulty of a low-temperature produced liquid of crude oil in a superficial layer is great and the oil content of the demulsified aqueous phase is great, and is suitable for the condition that the demulsifying difficulty of the produced liquid at the low temperature is great and the oil content of the demulsified aqueous phase is great.

The invention relates to an assistant mounting die for a support and a construction method thereof. The die comprises an assistant die plate, a plurality of wooden wedges, a plurality of anchor bolts, a plurality of embedded pipes and a plurality of bolt sleeves, wherein the embedded pipes are vertically arranged inside the top end of a pier column at intervals in a detachable mode, and are used for forming preserved bolt holes; a bolt sleeve is mounted in each preserved bolt hole; the assistant die plate is horizontally arranged above the preserved bolt holes, and a plurality of bolt positioning holes are formed in the assistant die plate; the wooden wedges are arranged between the top surface of the pier column and the bottom surface of the assistant die plate at intervals; the lower end of each anchor bolt is in threaded connection to the interior of the corresponding bolt sleeve after penetrating through the corresponding bolt positioning hole. The assistant mounting die solves the problem that whether the support is mounted in place and whether the contact with a cushion is tight and gapless. In practical construction, the assistant mounting die is lighter in weight, and the plane positions and heights of the bolts are conveniently adjusted; moreover, the assistant mounting die is simple and convenient to manufacture and convenient to assemble and disassemble, and the mounting method is simple and easily understood and is beneficial for use in site operation.

The invention relates to a multi-component small powder automatic packaging palletizing method, belonging to a small powder scale automatic weighing batching apparatus. The method changes the overall processes of putting plastic bag into a charging basket, taking out pockets, closing bag mouths, palletizing the pockets into a storing vehicle before mixing former rubber, during matching various small powders according to the formulation into the full mechanical automation. The method is implemented by the following devices: a bag machine 14, a plastic bag clamping unit 4, a special pocket 5, a clamping unit actuating device 20, a transmitting bag and opening bag mouth device 15, a putting bag device, a taking bag device, a heat seal capper 18, a stack device, a pocket positioning device 21, an empty pocket positioning device 33, a pneumatic control system, an electronic control system and an PLC program control system.

The invention discloses a temporary plugging agent for drilling fluid, and belongs to the technical field of petroleum drilling. The temporary plugging agent is prepared from the following raw materials in percentage by weight: 60 to 70 percent of hexadecane, 0.5 to 1 percent of catalyst persulfate, 10 to 20 percent of phenol, 10 to 20 percent of formaldehyde, and 1 to 2 percent of cationic surface active agent. The preparation method comprises the following steps of: 1, adding the hexadecane liquid into a reaction kettle, heating the reaction kettle to 50+ / -5 DEG C, adding the phenol, stirring the mixture, controlling the temperature to be 80+ / -5 DEG C and the pressure to 2+ / -0.5MPa, slowly adding the catalyst, adding the formaldehyde solution after 2 hours, stirring the mixed solution for 2 hours while continuously controlling the temperature to 40+ / -5 DEG C, adding the surface active agent, and stirring the mixed solution for 2 hours; and 2, relieving the pressure in the reaction kettle to normal pressure, extracting the mixture, drying the mixture at the temperature of 100+ / -5 DEG C, and then grinding the dried mixture to obtain the temporary plugging agent. The softening point temperature of the temporary plugging agent is within a wide range from 70 to 140 DEG C, so that the temporary plugging agent can almost meet the needs of all layers of earth.

The invention provides a remediation agent for cadmium contaminated soil and a soil remediation method. The remediation agent comprises magnesium oxide, sepiolite, magnesium calcium-based bentonite, and zeolite, and can be used for in-situ remediation performed on the cadmium contaminated soil. The remediation agent takes magnesium oxide as a main passivator component for cadmium, additional threeclay minerals are added to serve as adsorbent and stabilizer components to form a mixture, after the remediation agent and the contaminated soil are uniformly mixed, the initial water content is adjusted to a saturated soil water content, and the remediation agent is left to stand for 3 to 10 days, so that normal plant seeding can be performed. The remediation agent reduces the bioavailability and transferability of heavy metal elements in the cadmium contaminated soil, improves soil self-purification capacity, and improves the soil fertility status, thereby guaranteeing the high quality, high yield and safety of agricultural products, ensures that the soil remediation is short in reaction period, good in effect, long in duration and wide in application range, and cannot cause secondary pollution.