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124results about How to "Early" patented technology

Method for extracting gas from bedding level fractured well of ground coal seam roof

InactiveCN102080526ARealize multiple uses in one wellEasy extractionSurveyFluid removalPrincipal stressHydraulic fracturing
The invention provides a method for extracting gas from a bedding level fractured well of a ground coal seam roof, orderly comprising the following steps: selecting a coal storage layer with the gas content more than 8 m<3> / t; determining fissure zone position generated by extracting the coal layer, taking the rock formation at 3-7 m of the middle lower part of the fissure zone as the level construction layer; determining positions of the well opening and kickoff points according to landing points of the level segment; and realizing large curvature radius increased slanting, wherein the drilling position is parallel to a gate road at a coal stope working surface or vertical to the largest principal stress direction, and the length of the level segment is less than or equal to the strike length of the working surface; the well structure adopts a three-part structure; the level segment can be an uncased hole or a lower sleeve tube which is an emission hole; the level segment is constructed in the selected rock layer; the level segment uses an open hole packer or a sleeve tube packer for performing hydraulic fracture in segments; a drainage and extracting apparatus is arranged for extracting the ground gas by a virtual storage layer; and the negative pressure extracting is exchanged between the middle and last phase, thereby realizing multiple functions of the well. The method in the invention improves the extracting efficiency of the ground drilling well, realizes area outburst elimination, and reduces the gas disasters to the maximum limit.
Owner:HENAN POLYTECHNIC UNIV

Well-drilling early overflow loss ground monitoring device

The invention relates to a well-drilling early overflow loss ground monitoring device. The well-drilling early overflow loss ground monitoring device comprises a data acquiring device, a data processor and a drill floor displayer connected with the data processor, wherein the data acquiring device is respectively connected with inlet and outlet flow sensors, a bit pressure sensor, a drill disc rotating speed sensor, a drill disc torque sensor, a mud pit liquid level sensor, a sleeve pressure sensor and a vertical pipe pressure sensor and is connected with the drill floor displayer through the data processor. The well-drilling early overflow loss ground monitoring device adopts a structure mode recognition method, automatically adjusts sensitivity, recognizes the type of well kick media, adopts pictorial chart outputting, achieves intelligentized monitoring, is high in monitoring accuracy, greatly shortens time for finding well kick, facilitates timely adoption of a well control measure, avoids safety accidents, is suitable for various well drilling working conditions, makes up the limitations of traditional monitoring methods, is simple in system structure, simple and convenient to maintain, low in monitoring cost and wide in application range and facilitates large-scale popularization.
Owner:SOUTHWEST PETROLEUM UNIV

Anti-blocking rapid vacuum preloading and solidifying method for flow-state mud with straw as drainage bodies

The invention discloses an anti-blocking rapid vacuum preloading and solidifying method for flow-state mud with straw as drainage bodies. According to the method, straw bales are inserted into the flow-state mud to form the multiple vertical straw drainage bodies, a straw weaving carpet is arranged on the surface of the flow-state mud in a paved manner, and the straw weaving carpet is connected with the vertical straw drainage bodies in an overlapped manner; pipelines are arranged on the surface of the straw weaving carpet in a paved manner to form a drainage pipe network, a vacuum pump is connected with one end of the drainage pipe network, and the other end of the drainage pipe network is provided with a ventilation valve; the vacuum pump is opened, the ventilation valve is adjusted to control the vacuum degree in a sealing membrane, loading-type cyclic loading is adopted, it is guaranteed that pre-set vacuum negative pressure is loaded in the sealing membrane, the flow-state mud is solidified rapidly, and drainage is carried out. The condition that the drainage bodies are blocked by the flow-state mud can be avoided, the agriculture straw can be fully utilized, and environment pollution caused when the agriculture straw is wasted is avoided.
Owner:JIANGSU HONGJI GEOTECHNICAL ENG CO LTD

Efficient high-yield cultivation method for cao apricots

InactiveCN103988742AGuaranteed growthGuaranteed replacement of old and newCultivating equipmentsMain branchGreenhouse
The invention relates to a cultivation method for apricots, in particular to an efficient high-yield cultivation method for cao apricots. According to the method, the yield is high, gains are got quickly, and the quality is good. The method comprises the following steps that farmyard manure and phosphate fertilizer are applied in a sunlight greenhouse in autumn of the year before field planting; strong biennial cao apricot seedlings pure in variety are selected and planted in the sunlight greenhouse in a field mode in the middle ten days of January of the current year; in late April of the field planting year, six to eight young sprouts are selected as main branches to be cultivated, and other sprouts are removed; soil fertilizer application is respectively carried out in early May and in early June of the field planting year once, leaf fertilizer is sprayed from July to August, and the farmyard manure is applied in middle ten days of September; the greenhouse is built in the middle ten days of November of the field planting year; flower thinning is not carried out during a flowering period in the next year of field planting, and fruit thinning is carried out at the time of half a month after flower drop; the temperature in the sunlight greenhouse rises to 25 DEG C to 30 DEG C during a fruit developing period in the next year of field planting; in April of the next year of field planting, fruit is mature, the picking period arrives, and nursery stocks are transplanted to the field outside the sunlight greenhouse to be cultivated after picking is finished.
Owner:田婧

Flood breach plugging device for dam and plugging method thereof

The invention provides a flood breach plugging device for a dam and a plugging method thereof and relates to the field of building members, mechanism members and hydro science. The flood breach plugging device comprises stressed securing piles arranged above dams on two sides of a breach, a supporting rope and a throwing rope, two ends of which are fixed to the stressed securing piles, a tensionerfor tensioning the supporting rope and the throwing rope and a water baffle queue placed above the supporting rope and the throwing rope; the water baffles comprise a plurality of parallelly arrangedlight prefabricated water baffles which are connected in series by a serializer, and one ends of the bottoms of the light prefabricated water baffles are movably connected to the supporting rope while the other end of the bottom of the light water baffle queue is directly placed on the throwing rope. Meanwhile, the invention provides the plugging method of the flood breach plugging device for thedam. The device and method provided by the invention solve the problems that according to an existing plugging technology of the flood breach of the dam, the manpower and material costs are high, theplugging time is long, the labor intensity is great and the safety risk of rescue personnel is great.
Owner:耿飞

Monitoring system used for monitoring collapse body state in real time

The invention discloses a monitoring system used for monitoring the collapse body state in real time. The monitoring system comprises a sensor monitoring device and a control center, wherein the sensor monitoring device is used for monitoring the collapse body state in real time, regularly collecting the deformation data of a collapse body according to the preset collecting frequency and sending the collected deformation data to Internet of things in a wireless communication mode, and the control center is connected with the Internet of things, is used for receiving the deformation data, sent by the sensor monitoring device through the Internet of things, of the collapse body and carries out analysis and processing on the deformation data to obtain the deformation state of the collapse body. The monitoring system provided by the invention has the advantages that the remote monitoring is realized, the work intensity of monitoring personnel is reduced, and in addition, the monitoring prediction on the collapse body is realized, so the discovering time of serious deformation or collapse events of the collapse body can be brought forward, the safety measure can be adopted as early as possible, and the occurrence rate of safety accidents is reduced.
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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