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30results about How to "Extended production period" patented technology

Non-tissue-cultured walnut micro-cutting grafting seedling raising method

The invention discloses a non-tissue-cultured walnut micro-cutting grafting seedling raising method. A walnut grafted seedling which is cultured by using soil is used as a female parent tree for producing micro-cuttings, the nutrition of the tree is increased by flexibly adopting a rhizosphere fertilization mode and a leaf spray fertilization mode according to the growth vigor of a nursery stock, the germination speed is high, and the production period of the micro-cuttings is short; the female parent tree is planted in a plastic greenhouse and an open field respectively, so that complementation in time can be realized, the production time of the micro-cuttings is prolonged, and the cost is reduced; the walnut grafted seedling which is cultured by using soil is used as the female parent tree for producing the micro-cuttings, the produced micro-cuttings has the base diameter of greater than 0.4 cm, is well matched with seedlings in the roughness, and is robust in the growth, and thus the problems of leaf yellowing, withering, slimness and weakness and the like of the tissue-cultured micro-cuttings which occur frequently are solved; the method is easy to operate without specialized training, and the grafting survival rate of normal personnel reaches 79 percent; the requirements on environment conditions are loose, i.e., the environment conditions can be spring, summer and autumn, the micro-cuttings can be produced in the outdoor fields under natural conditions, and the propagation coefficient is large; and by applying ethephon, the growth speed of the micro-cuttings is flexibly controlled, and adjustment and control are performed to enable that the production of the micro-cuttings is consistent with that of the seedlings.
Owner:付德明

Non-tissue-cultured walnut micro-cutting grafting seedling raising method

The invention discloses a non-tissue-cultured walnut micro-cutting grafting seedling raising method. A walnut grafted seedling which is cultured by using soil is used as a female parent tree for producing micro-cuttings, the nutrition of the tree is increased by flexibly adopting a rhizosphere fertilization mode and a leaf spray fertilization mode according to the growth vigor of a nursery stock, the germination speed is high, and the production period of the micro-cuttings is short; the female parent tree is planted in a plastic greenhouse and an open field respectively, so that complementation in time can be realized, the production time of the micro-cuttings is prolonged, and the cost is reduced; the walnut grafted seedling which is cultured by using soil is used as the female parent tree for producing the micro-cuttings, the produced micro-cuttings has the base diameter of greater than 0.4 cm, is well matched with seedlings in the roughness, and is robust in the growth, and thus the problems of leaf yellowing, withering, slimness and weakness and the like of the tissue-cultured micro-cuttings which occur frequently are solved; the method is easy to operate without specialized training, and the grafting survival rate of normal personnel reaches 79 percent; the requirements on environment conditions are loose, i.e., the environment conditions can be spring, summer and autumn, the micro-cuttings can be produced in the outdoor fields under natural conditions, and the propagation coefficient is large; and by applying ethephon, the growth speed of the micro-cuttings is flexibly controlled, and adjustment and control are performed to enable that the production of the micro-cuttings is consistent with that of the seedlings.
Owner:付德明

Small-diameter pipe staged fracturing production string and method for sidetracking wells and slim-hole wells

The invention provides a small-diameter pipe staged fracturing production string and method for sidetracking wells and slim-hole wells. The small-diameter pipe staged fracturing production string comprises a fracturing string, a large casing pipe, a suspension packer, a small casing pipe, and a packing string composed of a small-diameter pipe, a packing string upper packer, a plurality of packingstring lower packers and a guide screen pipe; the suspension packer is arranged on the lower portion in the large casing, the upper end of the small casing pipe is connected to the suspension packer,and the inner diameter of the large casing pipe is larger than that of the small casing pipe; and the small casing pipe comprises a vertical corner section and an inclined section, the packing stringupper packer is arranged on the upper portion in the small casing pipe, the small-diameter pipe extends downwards in the direction of a center shaft of the large casing pipe, and the small-diameter pipe penetrates through the vertical corner section of the small casing pipe and extends towards the inclined section. According to the small-diameter pipe staged fracturing production string and methodfor the sidetracking wells and the slim-hole wells, after fracturing is completed, a packer string serves as the production string, stable production of the gas wells can be guaranteed, the full-life-cycle drainage gas recovery effect of the gas wells is improved, the service life of the gas wells is prolonged, and the development cost and the production cost of the gas wells are greatly reduced.
Owner:PETROCHINA CO LTD

Production method of preset small-diameter pipe for sidetracking well and slim hole well

ActiveCN112502682AReservoir damage is smallExtended well lifeFluid removalSealing/packingPipeOpen hole
The invention provides a method for producing a preset small-diameter pipe for a sidetracking well and a slim hole well, which comprises the following specific steps: 1, lowering a fracturing pipe column produced by fracturing the sidetracking well and the slim hole well by using an open hole packer and the preset small-diameter pipe to a preset position of a target reservoir, and ensuring that acasing packer is suspended at a position 10-15m above a sidetracking well windowing position; aligning the sand blaster to a reservoir to be transformed, and the reservoir packers clamp the reservoirtransformation section and avoid the casing joint hoop; 2, locating a pumping large-diameter steel ball at a reducing release tie-back cylinder, and when the pumping large-diameter steel ball is pressed to 25 Mpa, a casing packer and a reservoir packer are subjected to setting; and when the pressure is increased to 35Mpa, releasing the releasing tie-back cylinder for three times, and pulling out the part above the releasing tie-back cylinder. The fracturing fluid is injected from the oil jacket annulus, the construction displacement can reach 6 m < 3 >/min or above, the transformation scale can be enlarged, and the crack extension distance can be prolonged; The liquid carrying capacity of the gas well is improved, and the production cost of the gas well can be greatly reduced while the production period of the gas well is prolonged.
Owner:PETROCHINA CO LTD

Anti-pollution circulating runway type culture system based on algae culture

The invention relates to the technical field of algae culture and photosynthetic bacteria culture, and discloses an anti-pollution circulating runway type culture system based on algae and photosynthetic bacteria culture. The system comprises a feeding tank, a remote main system controller, a power system, a spraying system, an oxygen supply system, a temperature control system, a PH control system, a spectrum control system, a daytime and night mode and a liquid conveying system, wherein the main control system is connected with the power system, the spraying system, the oxygen supply system, the temperature control system, the PH control system, the spectrum control system, the daytime and night mode, the spraying system, the oxygen supply system and the liquid conveying system. According to the anti-pollution circulating runway type culture system based on algae and photosynthetic bacteria culture, algae plants and photosynthetic bacteria are cultured in the mode, the culture density is high, the harvesting efficiency is remarkably improved, the culture conditions are easy to control, high-density culture is easy to realize, metabolite accumulation is facilitated, the system is not limited by regional environments, the production period is long, and production can be carried out all the year round.
Owner:刘正君

A kind of planting method of sunflower covering and re-sowing peas before sowing

The invention discloses a planting method for interplanting pea before sowing of sunflower. The planting method mainly includes: when fertilizing and mulching a land block where sunflower is prepared to be planted in early spring, planting pea on line space films reserved for sunflower at planting time about 20th March; watering the pea for the first time in early May, and combining watering with fertilizing; planting sunflower in reserved lines at the time from the end of May to the beginning of June; harvesting pea at the beginning of July, wherein yield of pea per mu is about 200kg generally, and yield of sunflower is not reduced basically and can reach about 250kg. High-efficiency three-dimensional planting technology is developed according to the circumstance that a Hetao irrigation area is sufficient for one crop and insufficient for two crops, and has the advantages that light, heat and soil resources are utilized fully, one-season two-harvest is realized, ground surface exposure is reduced, and sand storm is prevented. The planting method has double effects of increasing yield and income and protecting ecological environment of farmland and is high in practicability and wide in application prospect.
Owner:INNER MONGOLIA AUTONOMOUS REGION ACAD OF AGRI & ANIMAL HUSBANDRY SCI

Method for prolonging bamboo shoot production period of Chimonobambusa utilis forest

The invention belongs to the technical field of bamboo shoot cultivation, and particularly relates to a method for prolonging the bamboo shoot production period of a Chimonobambusa utilis forest. The method comprises the following steps of: selecting the Chimonobambusa utilis forest of mixed growth bamboo category Chimonobambusa; in February and March of each year, selecting a new bamboo which does not sprout or unfold leaves, and carrying out shearing on a position which is far away from the bamboo crown part for 1/4-1/3 by high-branch scissors; and guaranteeing that a shearing hole is of a horseshoe shape and the shearing hole is not broken. Through the above method disclosed by the invention, the tip of the Chimonobambusa utilis in a mixed growth bamboo category is sheared at an appointed position at specific time, a tool can be conveniently carried, and the method is simple in operation and is convenient in implementation. The bamboo shoot generation period of the Chimonobambusa utilis forest processed by the method disclosed by the invention is prolonged, the amount of bamboo shoot generation peak periods is increased, peak shifting bamboo shoot generation of the Chimonobambusa utilis forest is realized, so that the fresh bamboo shoot supply time of a bamboo shoot processing industry chain is prolonged, meanwhile, market selling time of the fresh bamboo shoots is prolonged, and the economic benefits of Chimonobambusa utilis farmers can be greatly improved.
Owner:NANJING FORESTRY UNIV

A production method of preset small-diameter pipes for sidetracking and slimhole wells

ActiveCN112502682BLong extension distanceExpand the scale of renovationFluid removalSealing/packingSand blastingWell drilling
The invention provides a production method of preset small-diameter pipes for sidetracked wells and slimhole wells. The specific steps are as follows: step 1, fracturing sidetracked wells and slimhole wells with an open-hole packer and the production of preset small-diameter pipes. The split pipe string is lowered to the predetermined position of the target reservoir to ensure that the casing packer is suspended at a position 10-15m above the window of the sidetracking well. The sand blaster is aimed at the reservoir that needs to be reformed, and multiple reservoir packers are stuck. The location of the reservoir stimulation section, while avoiding the casing collar; step 2, the pumped large-diameter steel ball is seated at the variable-diameter return sleeve, and when the pressure reaches 25Mpa, the casing packer and the reservoir are isolated Set the device; when the pressure reaches 35Mpa, drop the return barrel for 3 hands, and lift out the upper part of the return barrel. The invention injects fracturing fluid from the annular space of the oil casing, and the construction displacement can reach 6m 3 / min or more, the reconstruction scale can be expanded and the fracture extension distance can be extended; the liquid carrying capacity of the gas well can be improved, the production period of the gas well can be extended, and the production cost of the gas well can be greatly reduced.
Owner:PETROCHINA CO LTD

A small diameter drainage gas production pipe string

The invention relates to a minor-diameter water draining and gas producing pipeline column. The pipeline column is composed of a seamless tube (1) and a connector (2). Materials used for the seamless tube (1) are divided into two kinds, one is 45 # carbon steel, and the other is 5083 aluminium alloy. When the well depth is equal or lesser than 3000 meters, the 45 # carbon steel seamless tube (1) and the connector (2) are adopted on the whole well section, and the mode of connecting a single rod is adopted; when the well depth is greater than 3000 meters, the compound mode is adopted by the pipeline column, the 45 # carbon steel seamless tube (1) and the connector (2) are adopted on the upper portion of a shaft; the 5083 aluminium alloy seamless tube (1) and the connector (2) are adopted on the lower portion of the shaft, the mode of connecting the single rod is adopted, an insulated joint is adopted on the transition part between the two kinds of oil pipes, and the galvanic corrosion is prevented from happening; the water draining and gas producing function of the pipeline column is equivalent to a coiled tubing, but the cost of the pipeline column is 40-50 percent of the coiled tubing. By narrowing the gas producing channel of a gas well, the liquid carrying capacity of the gas well is improved, so that water is timely discharged from the shaft, the gas well productivity is recovered, and the production period is prolonged.
Owner:PETROCHINA CO LTD
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