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281results about How to "Easy to mine" patented technology

Saline-alkali soil brackish water film mulching drip irrigation processing tomato planting method

The invention provides a saline-alkali soil brackish water film mulching drip irrigation processing tomato planting method, which comprises the following steps: (1) planting processed tomatoes: planting the processed tomatoes by adopting a manner of wide rows and high ridges, and mulching a white film above plants; (2) laying out a drip irrigation system, wherein an interval b between the drip irrigation systems is 48 to 52 cm; an interval a between drip emitters is 0.25 to 0.35 m; (3) carrying out high-frequency and small fixed amount water irrigation in a growing period of the processed tomatoes: alternatively irrigating brackish water and fresh water, and adopting the fresh water for irrigation in a seedling stage, and no irrigation in a red-mature period. The invention puts forward a cultivation method taking the brackish water and saline-alkali soil as targets in combination with the realities of shortage of fresh water resources, abundant underground brackish water resources and serious soil salinization in an arid region and a semi-arid region, and not only moisture is enabled to be held up within a field microcirculation of soil-and-film, deep seepage losses of the moisture are greatly reduced, but also under-film soil evaporation is remarkably lowered, sources of soil secondary salinization are cut off and the surface accumulation of salt is eliminated.
Owner:CHINA AGRI UNIV

Novel high-efficiency composite viscosity reducer for super heavy oil

The invention relates to an oil-soluble and water-soluble composite temperature-resistant and salt-resistant viscosity reducer for super heavy oil in the field of petroleum exploitation. The composite viscosity reducer contains oil-soluble viscosity reducer A and water-soluble viscosity reducer B, and mass ratio of the oil-soluble viscosity reducer A to water-soluble viscosity reducer B is 1:(4-9). The viscosity reducer provided by the invention has the following advantages: the viscosity reducer has temperature resistance (up to 140 DEG C), salt resistance (up to 22*10<4>mg/L), and combines the advantages of both oil-soluble viscosity reducers and water-soluble viscosity reducers; the viscosity reducing effect is obviously superior to the effect of single use of oil-soluble viscosity reducer and water-soluble viscosity reducer; the application range is wide; the viscosity of the oil phase can be reduce after demulsification; and demulsification is not affected and water quality is not influenced. The viscosity reducer provided by the invention can greatly saves consumption of thin oil and exploitation cost when being used for well casing viscosity reduction; and can effectively improve exploitation and delivery performance of heavy oil/super heavy crude oil and greatly increase well yield when being used for heavy oil viscosity reduction.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Method for exploiting residual crude oil in low-permeability oilfield by using polymer micro/nanoparticle

The invention relates to a method for exploiting residual crude oil in a low-permeability oilfield by using a polymer micro/nanoparticle, comprising the following steps of: (1) carrying out prior period water drive on the low-permeability oilfield; (2) measuring the average throat radius of the low-permeability oilfield to determine the particle size r of the polymer micro/nanoparticle, wherein the particle size r of the polymer micro/nanoparticle meets a formula shown as the specification; (3) carrying out copolymerization by using a distillation-precipitation method according to the determined particle size r of the polymer micro/nanoparticle to obtain the polymer micro/nanoparticle; and (4) injecting the polymer micro/nanoparticle obtained in the step (3) into an oil layer, and carrying out the following water drive on the low-permeability oilfield. The method has the advantages that the used polymer micro/nanoparticle injection system can selectively enter large, medium and small ducts, a stronger wave and volume expanding function and an oil washing capacity are achieved, the residual oil on a low-permeability layer is better exploited, the crude oil exploiting yield is increased, and the economic benefit is increased.
Owner:UNIV OF SCI & TECH BEIJING

A wireline core drilling tool

The invention discloses a wire core drilling tool which comprises an inner pipe assembly and an outer pipe assembly. A blockage notifying mechanism comprises a pull rod and an alarming rubber ring fixed on the pull rod, a conical pad and a sliding sleeve connected on the pull rod in a sleeved manner are arranged at the lower end of the alarming rubber ring, the conical pad comprises an annular extrusion portion and a conical portion, the upper end of the annular extrusion portion is matched with the alarming rubber ring for extrusion, the conical portion is arranged at the lower end to protect the sliding sleeve, the upper end of the sliding sleeve and the conical pad are rotatably connected through a bearing, a clamping block is arranged on the lower portion of the pull rod, a buffering spring is connected between the clamping block and the sliding sleeve in a clamped manner and connected on the pull rod in a sleeved manner, a buffering spring sleeve is arranged outside the buffering spring, and the lower end of the buffering spring sleeve is connected with an inner pipe. The blockage notifying mechanism of the drilling tool is simplified, so that structure of the drilling tool is simplified greatly, and the drilling tool is enabled to be convenient to maintain, reliable to use and high in practicability.
Owner:无锡锡钻地质装备有限公司

Multi-stage composite rotational flow and turbulent flow sound wave super-strong viscosity reduction, paraffin control and oil increasing device

ActiveCN112096346ASolve the problem of easy blockageImprove liquidityCleaning apparatusFluid removalAtomizer nozzleEngineering
The invention provides a multi-stage composite rotational flow and turbulent flow sound wave super-strong viscosity reduction, paraffin control and oil increasing device. The multi-stage composite rotational flow and turbulent flow sound wave super-strong viscosity reduction, paraffin control and oil increasing device comprises a pipe shell; an oil inlet is formed in the front end of the pipe shell; an oil outlet is formed in the rear end of the pipe shell; a layered rotational flow mechanism is mounted in the position, located behind the oil inlet, in the pipe shell and comprises an outer-layer rotational flow sleeve mounted on the inner wall of the pipe shell; a middle spacer sleeve is fixedly arranged on the inner wall of the outer-layer rotational flow sleeve; an inner-layer rotationalflow column core is arranged in the middle spacer sleeve; the middle spacer sleeve is used for separating an inner-layer oil passage from outer outer-layer oil passage; an atomizing nozzle is arranged in the position, located on the inner side of the oil outlet, in the pipe shell; a multi-stage turbulent flow mechanism is arranged at the outer end of the oil inlet in the pipe shell; a first-stageturbulent flow chamber is formed between the multi-stage turbulent flow mechanism and the layered rotational flow mechanism; a second-stage turbulent flow chamber is formed between the rear end of the middle spacer sleeve and the end part of the inner-layer rotational flow column core; and a third-stage turbulent flow chamber is formed between the layered rotational flow mechanism and the atomizing nozzle. According to the multi-stage composite rotational flow and turbulent flow sound wave super-strong viscosity reduction, paraffin control and oil increasing device, the paraffin control and viscosity reduction effects are greatly improved, the efficiency of an oil well pump is improved, an oil pipe almost cannot be blocked, and the yield of an oil well is increased.
Owner:HUANGSHI BOHUI TECH CO LTD

High-temperature high-pressure fluid solid-phase deposition simulation device

The invention provides a high-temperature high-pressure fluid solid-phase deposition simulation device, which comprises a sample injection system for configuring and outputting a fluid sample; a solidphase deposition system communicated with the sample injection system and used for carrying out solid phase deposition on the fluid sample output by the sample injection system; and a back pressure system communicated with the sample injection system and the solid phase deposition system and used for controlling the pressure of the solid phase deposition system. The sample injection system is used for preparing the fluid sample and inputting the fluid sample into the solid phase deposition system, solid phase deposition is carried out on the fluid sample, the pressure of the solid phase deposition system is controlled through the back pressure system, and magnitude detection is carried out on the solid phase deposit by adopting a weighing method. The device has the beneficial effects thatthe problem of solid phase deposition in deep gas reservoir, condensate gas reservoir and gas injection miscible flooding oil reservoir exploitation is solved, a scientific research means and a prediction evaluation technology are provided, reservoir damage blockage and wellbore are avoided, and oil reservoir exploitation is facilitated.
Owner:CNOOC ENERGY TECH & SERVICES

Stone excavation method based on mine hammer

The invention discloses a stone excavation method based on a mine hammer. The method comprises the following steps of enabling construction equipment to enter a site, wherein the construction equipment is moved to the construction site where stone is to be excavated; selecting a hammering working face, wherein the construction hammering working face is selected on the stone to be excavated, a fallface is arranged on one side of the hammering working face, the height of the fall face ranges from 1 m to 5 m, and the distance between the hammering working face and the fall face ranges from 0.5 mto 3 m; performing punching, wherein the mine hammer is used for hammering a plurality of operation holes in the hammering working face; and performing stone decomposing, wherein the stone which is held open from the hammering working face is dug out and secondarily crushed through a crushing hammer and/or a rock arm, and the stone is crushed into dimension stone which is easy to load and transport; and performing truck loading and transportation. According to the method, stone excavation is conducted through the mine hammer in a non-blasting mode, explosion damage is avoided, combined line production is adopted through the mine hammer and other devices, the method can adapt to various terrains, the construction speed is high, and the construction efficiency is high.
Owner:GUANGDONG LIYUAN HYDRAULIC MACHINERY

Analog simulation experiment device and method for solid gas coupling of upper protective layer mining

The invention discloses an analog simulation experiment device and method for solid gas coupling of upper protective layer mining. The device comprises an experiment box and a permeability testing system. The experiment box is arranged in a sealed mode, an organic glass plate and a steel plate on the experiment box are provided with a gas inlet hole and a testing hole corresponding to the gas inlet hole respectively, and a stress sensor of the experiment box is sequentially connected with a data collecting instrument and a computer. The permeability testing system is composed of an air compressor, a gas storage tank, a high-pressure rubber pipe, a branching unit, a check valve, a pressure gauge and an electronic flow meter. An inflation system is connected to an inflation hole in the experiment box, and the permeability testing system is connected to the testing hole of the experiment box. The experiment method includes the steps that firstly, a model is laid; secondly, an air impermeability test is conducted; thirdly, an experiment is conducted, and data are recorded. According to the analog simulation experiment device and method for solid gas coupling of upper protective layer mining, the change rule and the distribution characteristics of stress, deformation and permeability in mining underlying coal and rock masses can be measured, the operation process is simple, effects are clear and visual, the testing period is short, and convenience is provided for studying protective layer mining.
Owner:XIAN UNIV OF SCI & TECH
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