48results about How to "Increased penetration distance" patented technology

The invention discloses an ultrasonic-assisted reservoir stratum chemical blockage removal experimental facility and an experimental method. The experimental facility comprises a rock core clamp holder, a ring compression feed device, an ultrasonic energy converter, an ultrasonic generator, a chemical reagent storage tank connected with a liquid inlet of the rock core clamp holder by a conveying pipeline, a water storage tank, an oil storage tank and a liquid container connected with a liquid outlet of the rock core clamp holder. The experimental method comprises the following steps of: 1, pretreating a tested rock core; 2, testing the initial permeability of the rock core through water drive; 3, polluting the rock core; 4, testing the permeability of the polluted rock core through the water drive; 5, performing an ultrasonic-assisted chemical reagent blockage removal experiment; 6, testing the permeability of the rock core subjected to the blockage removal through the water drive; 7,performing the ultrasonic-assisted chemical blockage removal experiment under the condition of ultrasonic oscillation with different frequencies and amplitudes; and 8, processing data. The ultrasonic-assisted reservoir stratum chemical blockage removal experimental facility has reasonable design, complete functions and high using effect, is easy and convenient to arrange and operate, and can realize the pulse fluctuation of the chemical blockage removal under the action of the ultrasonic oscillation.

The invention discloses a hydraulic pulse-assisted reservoir chemical remedial treatment experiment device and a hydraulic pulse-assisted reservoir chemical remedial treatment experiment method. The experiment device comprises a core holder, an annular pressure supply device, a chemical reagent storage tank, a water storage tank, an oil storage tank and a liquid container, wherein the chemical reagent storage tank, the water storage tank and the oil storage tank are connected with a liquid inlet of the core holder through delivery pipes; the liquid container is connected with a liquid outlet of the core holder; and a hydraulic pulse generating device is arranged on each delivery pipe. The experiment method comprises the following steps of: 1, preprocessing a tested core; 2, measuring the initial permeability of the core by water drive; 3, polluting the core; 4, measuring the permeability of the core by water drive after pollution; 5, performing a hydraulic pulse-assisting chemical reagent remedial treatment experiment; 6, measuring the permeability of the core by water drive after remedial treatment; 7, performing the hydraulic pulse-assisted chemical reagent remedial treatment experiment under the conditions of different frequencies and different amplitudes; and 8, arranging data. The device is rational in design, convenient to arrange, complete in function, simple to operateand good in using effect and can realize pulse fluctuation of the chemical remedial treatment under the action of an injection pressure.

The invention relates to a novel modification system and process of a hot-dry-rock thermal reservoir, characterized by the combination of two stimulation measure processes, thermal stimulation and chemical stimulation. The process is characterized in that a naturally present fracture network is destructed by thermal stimulation to enhance permeability, partial minerals, scale and obstruction in shafts and fractures are dissolved by the chemical stimulation, and flow guiding capacity of the fractures is further improved. The repeating of the process enables a larger range of thermal reservoirs to be modified. By using the process, the problem of the prior art that after thermal stimulation, part of the fractures are closed along with the rise of the temperature of a cooling area and the problem that that a chemical stimulant disappears nearby an injection location during its excess speed of reacting with rock minerals at high temperature are solved, and the process enables greatly reduction in the risk of frequent microseism in a reservoir modification process when compared to traditional hydrofracturing. The process is widely applicable to the modification of hot-dry-rock thermal reservoirs.

A method of fracking carbonate-rich reservoirs, comprising injecting a cryogenic or chilled fluid followed by an acid into said reservoir, allowing the acid to etch said reservoir, and thereby increasing production of a fluid, such as water, oil or gas, from said reservoir.

The invention relates to a pseudorandom spectrum-spread electromagnetic wave tomographic imaging instrument and a method for achieving imaging. The imaging instrument comprises a pseudorandom sequence generator, a modulator, a power amplifier and a transmitting antenna which are sequentially connected, and further comprises a signal receiving antenna, a demodulator, a signal correlator and a signal strength estimator which are sequentially connected, wherein the signal correlator is connected with the pseudorandom sequence generator which is connected with a synchronous controller, and the synchronous controller is connected with a data processing host which is connected with a human-computer interface. Under the condition that conditions such as transmission energy, working frequencies and detected objects are basically the same, by means of the pseudorandom code spectrum-spread technology, the system can have high interference resistance, and the detection penetration distance can be increased to a certain extent.

The invention discloses a direct injection molten iron desulphurization spray gun for a metal particle magnesium or magnesium-based or calcium-based desulphurization agent. The direct injection molten iron desulphurization spray gun comprises a connecting flange and a gun barrel which are sequentially connected and communicated, wherein the gun barrel comprises a connecting section gun barrel and a gun body section gun barrel; the connecting section gun barrel comprises a gun core; a distributor is connected with the lower end of the gun core of the gun body section gun barrel; the distributor comprises an upper end short connecting pipe, a lower end plug platform and a plurality of through holes formed in the wall of the short connecting pipe; and each through hole is communicated with a jetting pipe, and the jetting pipes are distributed in a fire-proof pouring material liner positioned outside the side wall of the distributor. The direct injection molten iron desulphurization spray gun disclosed by the invention can be used for enhancing the jetting strength, extending the desulphurization reaction area and intensifying the gasification and dissolution of metal particle magnesium through structural design, and can be used for enhancing the adaptability on low-quality metal particle magnesium and jetting desulphurization of molten iron tanks with different sizes, extending the adaptive capacity of a process and reducing the consumption cost of the molten iron desulphurization metal particle magnesium through the improvement of desulphurization process steps.

The invention relates to the field of corrosion protection of ocean engineering materials, and aims to provide a preparation method for an ocean engineering reinforced concrete silane emulsion protective agent. The method comprises the following steps of: previously stirring and dissolving an emulsifier in a reaction kettle by using 40-80 parts by mass of de-ionized water; slowly adding 20-60 parts by mass of silane monomer under high shear force; and then emulsifying at 30-60 DEG C under low-speed stirring for 6-12 hours to obtain uniform stable micro-nano emulsion, namely a product. By using the method, 90 percent of surface water absorption can be reduced, the effect of obstructing erosion of concrete reinforcement by a marine corrosion medium can be achieved, an internal vapor discharge passage is also kept, and internal atmospheric pressure produced to a film layer is reduced. Compared with a pure silane monomer impregnant, the volatilization rate is low, the utilization rate of silane is increased, the infiltration distance is increased, and the full curing time is greatly shortened. Compared with the conventional polysiloxane emulsion, the process is simple, the molecular weight of a filming substance is smaller, the infiltration capacity is stronger, and the filming capacity is higher.

The invention discloses a rust-proof pigment. The rust-proof pigment comprises the following raw materials in parts by weight: 30-50 parts of scale-shaped zinc powder, 2-10 parts of modified aluminum tripolyphosphate, 15-20 parts of titanium dioxide powder, 30-35 parts of zinc phosphate, 1-2 parts of calcium phosphate, 8-10 parts of calcium carbonate, 2-7 parts of a pigment dispersing agent, 2-5 parts of a silicane coupling agent, 3-7 parts of ammonium molybdate, 1-2 parts of coconut fatty acid diethanol amide, 10-15 parts of a dinonylnaphthalene sulfonic acid, 5-10 parts of ethyl orthosilicate, 0.5-0.9 part of a polyaspartic acid and 0.5-0.7 part of petroleum sodium sulfonate, and further comprises 1.5-3.2 parts of sepiolite powder. The rust-proof pigment disclosed by the invention is low in production cost; environmental pollution is avoided, that is, an environmental protection function is achieved; the rust-proof pigment is high in storage stability and cost performance, and has a certain of rust-proof and comprehensive performance.

The invention discloses a gas-liquid coaxial ejection liquid fuel electrostatic atomization nozzle. A needle-like corona charging electrode coaxial with a fuel corona charging chamber is placed in the fuel corona charging chamber, the right end of the fuel corona charging chamber is connected with an atomization swirler and a nozzle body which are coaxial with the fuel corona charging chamber, and the right end of the nozzle body is connected with a coaxial gas swirler. A left conical hole and a right conical hole which are coaxial and are communicated are formed right in the middle of the nozzle body. A conical atomization swirler is sleeved with the left conical hole of the nozzle body. The nozzle body is provided with a plurality of gas impact holes communicated with a gas inlet pipeline and the right conical hole of the nozzle body. The gas swirler is provided with a plurality of gas whirl flat holes communicated with the gas inlet pipeline and the outside. Corona discharge is carried out on the liquid fuel, the electrified liquid fuel is atomized through the static electricity and centrifugal force, the impact type auxiliary atomization is carried out on the liquid fuel through gas flow, the atomized drops interact with the air coaxially ejected after leaving the nozzle, and the combustion efficiency is improved.

The invention relates to chemical fracturing fluid for hot dry rock, which is prepared by mixing fluoboric acid, polyamino polyether methylene phosphonate and aluminum chloride hexahydrate. After the prepared chemical fracturing fluid is injected into a thermal reservoir of the hot dry rock, fluoboric acid is hydrolyzed to generate HF (hydrogen fluoride) gradually, the reaction speed with a stratum is lower, and deep penetration can be achieved. Polyamino polyether methylene phosphonate as polyatomic acid, can be decomposed into hydrogen ions at multiple stages, acts on the stratum for a long time, extends a penetration distance of chemical fracturing, further achieves a deep thermal reservoir transformation effect and has performance such as low speed, low damages, scale prevention and corrosion inhibition; simultaneously, phosphonate of polyamino polyether methylene phosphonate has significant absorption and water-dampness characteristics which can catalyze reaction between hydrofluoric acid and quartz and allow the corrosion speed of the quartz to be increased with time; and the improvement on the radial deep penetrability of the reservoir is facilitated.

The invention discloses a microbial grouting anchoring method for forming a pipeline by arranging partition plates in a cavity and a microbial grouting anchoring structure. The method comprises the following steps: drilling a hole in an anchoring base body, installing a hollow anchoring rod in the drilled hole, arranging two partition plates in a hollow cavity of the hollow anchoring rod in a crossed manner along the axial direction so as to divide the hollow cavity into a plurality of pipelines for grouting, and arranging a transverse partition plate in the middle in the hollow cavity in theradial direction to block part of the pipeline, wherein the hollow anchoring rod is provided with a side hole communicated with a blocked pipeline; injecting grouting liquid into the drilled hole through a pipeline; and installing a fixed object on the side wall of the anchoring base body, installing a nut on the hollow anchoring rod, and finishing anchoring.

The invention relates to a device for realizing an injection control policy of an oil injector. The device comprises an oil injector end cover, an oil injector electromagnetic control device, an oil injector oil preinjecting rod, an oil injector back oil injecting rod, an oil injector main oil injecting rod, a high-pressure oil injecting hole, an oil injecting way branch, an oil injector main oil way, an oil injector main oil way inlet, an oil injector body and an oil injector injecting rod spring; the magnetism of the oil injector electromagnetic control device is changed through controlling connection and disconnection of the oil injector electromagnetic control device; and under the effect of electromagnetic force, the oil injector oil preinjecting rod, the oil injector back oil injecting rod and the oil injector main oil injecting rod upwards move to realize preinjection, back injection and main injection. The device realizes multiple times of precise injection of the oil injector, can control the combustion phase and the combustion temperature, realizes sufficient oil combustion, improves the in-cylinder thermotechnical conversion efficiency, improves the oil energy utilization rate, realizes the in-cylinder clean combustion, reduces generation of pollutants, and realizes energy conservation and emission reduction.

The invention relates to a method of a control strategy for realizing jetting of a fuel injector. The method includes the steps that in the operation process of an engine, an ECU controls the on-off states of a fuel injector pre-injection electromagnetic switch, a fuel injector post-injection electromagnetic switch and a fuel injector main injection electromagnetic switch, then a fuel injector pre-injection electromagnet, a fuel injector post-injection electromagnet and a fuel injector main injection electromagnet can be electrified, the magnetism of the fuel injector pre-injection electromagnet, the fuel injector post-injection electromagnet and the fuel injector main injection electromagnet can be changed, under the effect of electromagnetic force, a fuel injector pre-injection rod, a fuel injector post-injection rod and a fuel injector main injection rod move upwards, and therefore pre-injection, post-injection and main injection are realized. According to the method, repeated accurate jetting of the fuel injector can be realized, the combustion phase and the combustion temperature can be controlled, fuel oil can be fully combusted, the thermotechnical conversion efficiency in a cylinder can be improved, the utilization rate of the energy of the fuel oil can be increased, clean combustion in the cylinder can be realized, generation of pollutants is reduced, and energy conservation and emission reduction can be realized.

The invention relates to the field of environmental geotechnics, and particularly relates to an ultra-hysteresis dipole transverse wave source in the field of engineering geophysical logging. The ultra-hysteresis dipole transverse wave source is characterized by comprising an emitter and a receiver, wherein a sound insulation pipe is arranged between the emitter and the receiver; the shell of the emitter and the shell of the receiver are internally respectively provided with two ultra-hysteresis plates which are made of ultra-hysteresis materials and are consistent in direction and identical in specification; and coils which are wound in the opposite direction and has the same turns are arranged on the two ultra-hysteresis plates. The ultra-hysteresis dipole transverse wave source provided by the invention has the advantages of small volume, wide bandwidth, large transmitting power, favorable anti-interference characteristic, favorable signal repeatability, short aftershock, long penetrating distance and the like, and is convenient for installation and suitable for the operation of the transverse wave logging in the field of the environmental geotechnics. The emission frequency of the ultra-hysteresis dipole transverse wave source can be adjusted according to the external voltage.

The invention discloses a groove-type cable bridge, comprising a groove frame and a shield arranged on the groove frame, wherein the groove frame comprises the following components in percentage by mass: C: 0.15-0.19%, Cr:1.0-3.0%, Si:2-4%, Al:0.5-0.9%, Ti:0.2-0.5%, Cu:0.05-0.08%, B:0.05-0.08%, Sb:0.1-0.3%, Mo:0.2-0.35%, Zr:0.03-0.05%, Zn:0.5-0.8%, Nb:0.05-0.07%, Mn:0.45-0.48%, S:0.003-0.005%, P:0.005-0.007%, V: 0.01-0.03%, rare element: 0.15-0.18%, the rest is Fe and inevitable impurities; the invention also designs an anticorrosion process of the groove cable bridge, which has good anticorrosion performance and long service life.