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86results about How to "Fast return on investment" patented technology

Method for developing heavy oil reservoir of horizontal well by combining staged volume fracturing and fracturing filling

ActiveCN105422068AReduce heat lossImprove seepage propertiesFluid removalSealing/packingPorosityGeomorphology
The invention provides a method for developing a heavy oil reservoir of a horizontal well by combining staged volume fracturing and fracturing filling. According to the method, firstly, a steam injection well is deployed at the bottom of the oil reservoir; a production well is deployed at the middle upper part of the oil reservoir; then, the volume fracturing or fracturing filling operation is performed according to the porosity degree and seepage rate distribution condition of the two horizontal wells; then, the two wells form heat communication in a steam throughput mode; next, the two wells transfer to continuous steam injection production; and the production is stopped when the oil-steam ratio is lowered to 0.1. According to the invention, a fracture net system is formed in a compact region by the volume fracturing, so that the seepage capability of the oil reservoir is improved; the fracturing filling process is used in a high-porosity and high-permeability region for performing compaction so as to reduce a formation sand production phenomenon; the seepage mode of a low-permeability region oil reservoir is converted from the single seepage to the sewage and fracture laminar flow; meanwhile, a high-permeability region is filled with small-grain-size sand for filling loose reservoir sandstone particle pores, so that the permeability near the production well is reduced,the oil reservoir anisotropy is reduced and the whole oil reservoir can be uniformly used and developed.
Owner:PETROCHINA CO LTD

Method for repairing soil heavy metal pollution by synergy of plants, mycorrhiza and earthworm

The invention refers to the technical field of soil recovery, and particularly relates to a method for repairing soil heavy metal pollution by synergy of plants, mycorrhiza and earthworm. The method comprises the following steps: inoculating mycorrhiza fungi to the soil polluted by heavy metal, and then planting specific plants in the soil; at last, inoculating earthworm in the soil at the seedling stage of the plant, and forming a plants-mycorrhiza-earthworm system; repairing the soil. By adopting the plants-mycorrhiza-earthworm system, the technology of repairing soil heavy metal at an original position and a fixed point is established, and the purpose of repairing the farmland soil heavy metal pollution can be realized. The earthworm can improve the infection rate of the mycorrhiza, so as to enhance the repairing function of the mycorrhiza on the heavy metal polluted soil, lighten soil pollution and protect the farm crops from being polluted; and thereby, human health is protected; besides, the method is low in investment, easy to master the technology, high in product additional value, quick in investment return, and very suitable for our actual condition, and can better promote the soil sustainable use and development.
Owner:BEIJING WO BAO BLUE ENVIRONMENTAL PROTECTION SCI & TECH LIMITED

Merchant returned customer prediction method based on big data

The invention requests to protect a merchant returned customer prediction method based on big data. The method comprises the following steps: 101, carrying out preprocessing operation on historical behavior data of a consumer; 102, training set data and verification set data are divided according to historical behaviors; 103, performing feature engineering operation on the historical behavior dataof the consumer; 104, performing feature selection on the sample set with the constructed features; 105, establishing a plurality of machine learning models, and carrying out model fusion operation;106, predicting whether the new buyer buys the commodity again in the same merchant in six months in the future according to the historical behavior data of the consumer through the established model.According to the invention, pretreatment and analysis are carried out to extract features, features are selected, a plurality of machine learning models are established, and whether a new buyer purchases commodities in the same merchant again in six months in the future is predicted according to consumption behavior data of the consumer in half a year before Double Eleven, thereby providing services for the merchant to accurately locate potential loyalty customers, reduce the promotion cost and improve the investment return.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Unloading and framing method and equipment for crude tobacco bales

The invention relates to an unloading and framing method and equipment for crude tobacco bales. The equipment comprises a lifting type telescopic or fixed conveying mechanism located at the front end, a lifting follow-up conveying device located behind the lifting type telescopic or fixed conveying mechanism, a sampling inspection chute connected and arranged below the tail end of the lifting follow-up conveying device, a universal bale combination arrangement device connected to and arranged at the tail end of the lifting follow-up conveying device, a moving or telescopic conveyor in butt joint with the universal bale combination arrangement device, a support and platform located on the lower portion of the bale combination arrangement device and the lower portion of the moving or telescopic conveyor, a transfer frame lifting device located at the tail of the moving or telescopic conveyor, a material blocking device arranged on the rear side of the transfer frame lifting device, a tobacco bale transferring and conveying frame arranged on the lower portion of a frame of the transfer frame lifting device, a frame inlet and outlet conveying mechanism arranged at the bottom of the tobacco bale transferring and conveying frame, an empty solid empty weighing mechanism arranged at the bottom of the frame inlet and outlet conveying mechanism, and an electric control system arranged on the outer side of the whole equipment.
Owner:KUNMING KSEC LOGISTIC INFORMATION IND

Rotary sorting system and use method thereof

InactiveCN105665287AGentle sorting processEfficient equipment operationSortingSolid of revolutionDrive shaft
The invention provides a rotary sorting system and a use method thereof. Sorting and conveying branches are arranged at one side of a conveyer; sorting mechanisms, corresponding to the sorting and conveying branches, are arranged at the other side of the conveyer; a cargo automatic identification system is arranged corresponding to the sorting mechanisms; each sorting mechanism comprises a motor, a driving shaft and a rotating body, wherein the rotating body is transversely arranged and the middle part of the rotating body is fixedly connected to the upper end of the driving shaft, pushing rotating shafts are vertically arranged at two ends of the rotating body in a rotatable manner, the pushing rotating shafts are in transmission connection to the driving shaft, pushing plates are arranged corresponding to the pushing rotating shafts, the pushing plates are fixed to the corresponding pushing rotating shafts through connecting parts, and the cargo automatic identification system and the motors in the sorting mechanisms are connected to a processor. The rotary sorting system provided by the invention solves the problem that an existing sorting mechanism is relatively low in sorting efficiency, and meanwhile, the sorting machine is not limited by mechanical conveying equipment and can prevent other non-sorted cargoes from being intervened. The rotary sorting system and the use method provided by the invention belong to the sorting field.
Owner:苏州九鲤机电科技有限公司

Dry method dust collecting technique for ferromolybdenum smelting flue gas

A ferromolybdenum smelting smoke and gas dry method dust collection technics, which solves the problems that the existing wet method dust collection has low dust collection efficiency, the smoke and gas can't meet the environment protection requirements, the system runs unstably, take serious erosion to the fan and the pipeline equipment and the recycled material is not easy to store. The method is that: the smoke and gas produced by ferromolybdenum smelting furnace enters into a U-shaped cooling machine to lower temperature naturally by a gas skirt, and proceed dust collection by a bag dedusting machine and is discharged reaching the standard; the dust material collected by the bag falls into the dust hopper of the bag dust collection machine by pulse spraying and blowing, which is used for smelting to produce ferromolybdenum, the smoke and gas after dust collection is transferred into a chimney to discharge out. The advantages of the invention are that: the invention has low investment and small running expense, which is economic with obvious environment benefit, and has quick capital payoff, the material recycle efficiency can reach above 99.9 per cent; the discharged smoke and gas can meet the requirement of protecting environment; the management is convenient, the operation is simple and the running is stable; the erosion to the fan and the pipeline equipment is small, which prolongs the service life of the equipment; the dry power material can be recycled directly, and is easy to lay; the process mating is easy, the engineer occupies small space and is easy to arrange.
Owner:LIAONING CHENGUANG ENVIRONMENT ENG TECH

Lowe layer light steel structure fabricated residence

The invention relates to the technical field of housing construction structures, in particular to a low layer light steel structure fabricated residence. The lower layer light steel structure fabricated residence comprises a wall body, flat bed bodies, a roof, first bearing components and second bearing components. A plurality of dense columns of the wall body are connected through the first bearing components. Each flat bed body comprises dense beams and layer face plates. The two ends of the dense beams are aligned, the multiple dense beams of the top flat bed body and the bottom flat bed body are connected through the first bearing components, and the multiple dense beams of the middle flat bed body are connected through the second bearing components. The roof comprises roof inclined beams and roof plates. The two ends of the dense beams of the top flat bed body are connected with the roof inclined beams, the roof inclined beams arranged at the two ends of the dense beams of the topflat bed body are connected to form a triangle above the top flat bed body, and the roof plates are laid on the surfaces of the multiple roof inclined beams. The lower layer light steel structure fabricated residence is low in structural dead weight, has good heat insulation performance, fire resistance and durability, and is good in anti-seismic performance, and the construction period is short.
Owner:GUANGDONG XIANGBO ECOLOGICAL TECH CO LTD

Ohmic heating unfreezing device and unfreezing method for aquatic products

The invention relates to an ohmic heating unfreezing device for aquatic products.The device comprises an unfreezing tank made of an insulation material and a conductive liquid circulating tank; conductive liquid, a pair of electrodes, a first thermocouple and unfreezing frames are arranged in the unfreezing tank; the unfreezing frames are made of the insulation material, the four faces of each unfreezing frame are hollow, the aquatic products to be unfrozen are put in the unfreezing frames, and the first thermocouple is connected with the centers of the aquatic products to be unfrozen and used for monitoring the temperature; the electrodes are connected with a power supply, and the power supply is provided with a current regulator and a voltage regulator; the thermocouple, the current regulator and the voltage regulator are all connected with a data recorder, and the data recorder records currents, voltage and temperature data monitored by the first thermocouple in real time; a refrigerating system, a heating system and a second thermocouple are arranged in the conductive liquid circulating tank; the refrigerating system and the heating system are regulated by a temperature regulator to work separately; pump circulation is formed between the conductive liquid circulating tank and the unfreezing tank made of the insulation material, and the conductive liquid circulating tank and the unfreezing tank made of the insulation material achieve circulation through pump liquid to monitor the temperature of conductive liquid contained in the unfreezing tank.
Owner:FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI

Device for effectively preparing biogas through secondary high-temperature anaerobic fermentation of composite material and method thereof

The invention discloses a device for effectively preparing biogas through secondary high-temperature anaerobic fermentation of a composite material and a method thereof. The device comprises a first primary anaerobic fermentation tank and a second primary anaerobic fermentation tank, wherein the first primary anaerobic fermentation tank is connected with one end of a first heat exchanger; the other end of the first heat exchanger is respectively connected with the first primary anaerobic fermentation tank and a secondary anaerobic fermentation tank; the second primary anaerobic fermentation tank is connected with one end of the second heat exchanger, and the other end of the second heat exchanger is respectively connected with a second primary anaerobic fermentation tank and the secondary anaerobic fermentation tank; a biogas transporting port is formed in the secondary anaerobic fermentation tank. The method comprises the following steps: (1) classifying the materials; (2) pre-processing the classified materials; (3) preparing a primary processing material and a secondary processing material; (4) feeding into the secondary anaerobic fermentation tank and refluxing; and (5) collecting the biogas generated by the secondary anaerobic fermentation tank. The device has the advantages of stable long-time running, strong endurance capacity on the ammonia nitrogen, the acid base and the volatile organic acid and high gas productivity.
Owner:北京海珍志阔科技有限公司
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