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240 results about "Bed" patented technology

Beds are the layers of sedimentary rocks that are distinctly different from overlying and underlying subsequent beds of different sedimentary rocks. Layers of beds are called stratigraphy or strata. They are formed from sedimentary rocks being deposited on the Earth's solid surface over a long periods of time. The stratigraphy are layered in the same order that they were deposited, allowing a differentiation of which beds are younger and which ones are older (the Law of Superposition). The structure of a bed is determined by its bedding plane. Beds can be differentiated in various ways, including rock or mineral type and particle size. The term is generally applied to sedimentary strata, but may also be used for volcanic flows or ash layers.

Method for joint interpretation of multi-array induction and multi-component induction measurements with joint dip angle estimation

Data are acquired using multi-array logging tool in a borehole having an angle of inclination to a normal to the bedding plane of earth formations. The multi-array measurements are filtered using angle dependent filters to give a filtered curve corresponding to a target one of the multi-array measurements using angle dependent filters. Correlation coefficients are determined for a set of possible dip angles and a relative dip angle is estimated from the correlation coefficients. This dip angle estimate together with bed boundaries obtained from the multi-array measurements are used for inverting multi-component measurements alone or jointly with multi-array measurements to refine the relative dip angle interpretation and give horizontal and vertical formation resistivity.
Owner:BAKER HUGHES INC

None-full-depth freezing method for penetrating through ultra-thick water-rich bed rock in shaft deepening

InactiveCN103277103ASave freezing costsFreeze Fee SavingsShaft sinkingSoil scienceBedrock
The invention discloses a none-full-depth freezing method for penetrating through ultra-thick water-rich bed rock in shaft deepening. According to the method, a shaft penetrates through surface soil, the water-rich bed rock, a water-resisting layer and low-permeability bed rock sequentially from top to bottom, and main freezing pipes penetrate through the surface soil and the water-rich bed rock sequentially from top to bottom, penetrate into the water-resisting layer by 10m-20m and stop in a low-permeability rock stratum; a none-full-depth freezing depth is 240m-260m and a wall-caving-preventing freezing depth is 40m-45m; the main freezing pipes are annularly arranged with the circle center of the shaft as a circle center and the distance between the main freezing pipes and the outer wall of the shaft is 2m; wall-caving-preventing freezing pipes penetrate into the surface soil only by 43m and are annularly arranged with the circle center of the shaft as a circle center, and the distance between the wall-caving-preventing freezing pipes and the outer wall of the shaft is 1m. The method is fast in construction, safe and efficient and capable of preventing water damage caused when underground water damages a horsehead and related chamber rock mass along annular water diversion channels during construction of the horsehead after a full-depth freezing shaft is frozen, wherein the annular water diversion channels are formed by the freezing pipes and temperature measuring pipes; therefore, cost for treating water burst is saved, and safety construction of the horsehead and a chamber is guaranteed.
Owner:陕西彬长矿业集团有限公司 +1

High-strength mining rock stratum migration grouting control and grouting amount calculation method

The invention provides a shallow-buried high-strength mining rock stratum migration grouting control and grouting amount calculation method, and belongs to a coal mine high-strength mining damage control and surface damage reduction method. Aiming at a shallow-buried high-strength overlying strata large-damage two-zone development structure of a western mining area, the invention provides a low-damage three-zone overlying strata structure formed by grouting and filling a caving zone and a bed-separated fissure zone, so that the surface damage is greatly reduced. The shallow-buried high-strength mining rock stratum migration grouting control and grouting amount calculation method mainly comprises the steps of determining the position of an overlying strata key layer; calculating maximum deflection w of the key layer before breaking; calculating a grouting amount calculation formula Vg=piwLd/3 required by the bed-separated fissure zone, and determining the height H1 of the caving zone according to the mining height of the coal seam working face and the properties of a roof and a floor; and further giving a calculation formula Vk = dH1L-Vg-(H1-M)bdL of the grouting amount of the caving zone for ensuring that the key layer is not broken; according to a calculation result, after a lower main roof of the working face is fractured for the first time, drilling a well from the ground and grouting into the caving zone; and when the working face is pushed to one square, beginning to grout the bed-separated fracture body. The shallow-buried high-strength mining rock stratum migration grouting control and grouting amount calculation method is as shown in the drawing of the abstract. By implementing the shallow-buried high-strength mining rock stratum migration grouting control and grouting amount calculation method, the surface damage degree of shallow-buried high-strength mining can be greatly reduced, and green mining of ecologically fragile regions of western mining areas isrealized.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Seismic-resistant-columned rock bolt foundation with enlarged toe and construction method of seismic-resistant-columned rock bolt foundation with enlarged toe

InactiveCN102561377AReduce excavationSolve the large amount of engineeringBulkheads/pilesEarthquake resistanceEarthquake intensity
The invention provides a seismic-resistant-columned rock bolt foundation with an enlarged toe and a construction method of the seismic-resistant-columned rock bolt foundation with the enlarged toe. The seismic-resistant-columned rock bolt foundation comprises a vertical cylindrical foundation body, the vertical cylindrical foundation body is equal to an upper seismic-resistance column in cross sectional size, and the cylindrical foundation body is inlaid in bed rock and provided with an enlarged bottom. The enlarged bottom is provided with a plurality of radial anchor bolts, and the cylindrical foundation body and the bed rock are anchored integrally with concrete by in-trench placement. Excavated volume of the rock foundation can be reduced effectively, the problems of large project amount, high manpower and material consumption and high cost are solved, and excavation cost is lowered greatly. The foundation is reliably connected with the bed rock by bottom enlargement and radial distribution of anchor bolts, connection of the column with the bed rock is enhanced effectively, extraction resistance, shear resistance, compression resistance and antidumping bearing capacity of the foundation are enhanced, horizontal or vertical displacement or separation between the column bottom and the bed rock in a high earthquake intensity area under the action of earthquake when an earthquake occurs is avoided, and seismic resistance of a building on the rock foundation is improved effectively.
Owner:CHONGQING UNIV

Method for drilling coal-bed gas well penetrating through goaf by means of composite blocking of hole-bottom broken rock masses

ActiveCN107313716ASimplified grouting equipmentFlushingSealing/packingSurface layerMining engineering
The invention belongs to the technical field of coal-bed gas resource exploitation and provides a method for drilling a coal-bed gas well penetrating through a goaf by means of composite blocking of hole-bottom broken rock masses. According to the method, the problems that when the coal-bed gas well is constructed through the goaf, drilling is difficult, and potential safety hazards exist during drilling are solved. The second spud-in drilling stage is conducted through the goaf, and the broken rock masses of drilling surrounding rock of the coal-bed gas well are blocked in sectioned and composite modes; the broken rock masses of the drilling surrounding rock are constructed by three stages, specifically, an auxiliary measure of injecting foam liquid into a hole bottom is carried out on a medium broken rock mass section, an auxiliary measure of injecting slurry into the hole bottom is carried out on a significant broken rock mass section, and a pipe-following drilling measure is carried out on a caving zone cavity section; and accordingly safe and efficient passing-through of the broken rock mass sections and caving zone cavities is achieved. Meanwhile, through the compressive stabilizing technology of a surface layer casing, an intermediate casing and a production casing, the overall rigidity and stability of the drilled well are greatly strengthened
Owner:SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD +2

Composite seepage preventing structure for large karst cave in karst region and construction method thereof

ActiveCN105201001ASolve the anti-seepage problemGood partitionBulkheads/pilesFilling materialsKarst
The invention discloses a composite seepage preventing structure for a large karst cave in a karst region and a construction method thereof, and belongs to the technical field of water conservancy and hydropower engineering. The composite seepage preventing structure comprises bed rock and the karst cave. The karst cave is located in the bed rock. The lower section of the karst cave is filled to form a karst filling area. A plurality of filling-material rotary jetting holes or steel pipe piles are vertically distributed in the karst cave filling area and arranged along the seepage preventing axis at intervals in a rowed mode. A transition cushion layer is arranged on the upper surface of the karst cave filling area. A concrete seepage preventing wall is arranged on the steel pipe piles. A cavity in the upstream side of the concrete seepage preventing wall is backfilled to form a backfilling area. According to the technical scheme, due to the reasonable construction method, the concrete seepage preventing wall is built in the karst cave, and the quite good partition effect and the quite good sealing effect are achieved through a karst cave roof joining groove structure in the top and a grouting-cave-aligning-grouting method; the structure and the method are simple, the quantity of input materials is small, construction intensity is small, construction efficiency is greatly improved, and the seepage preventing aim of large karst cave in the karst region is achieved.
Owner:CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD

Method for quantitatively analyzing ultra-deep gypsum salt rock and dolomite coupling mechanism

ActiveCN111983189AImprove identification work efficiencyAccurate analysisEarth material testingGeomodellingDolostoneOutcrop
The invention discloses a method for quantitatively analyzing an ultra-deep gypsum salt rock and dolomite coupling mechanism. The method comprises the following steps of: (1) respectively acquiring geological background data, classic field geological outcrop profile measurement data, drilling and logging data and seismic data by taking a Sichuan basin carbonate rock reservoir as an object; (2) according to the data obtained in the step (1), determining the basic geological characteristics of dolomite by using sedimentology, petroleum geology theories and various geochemical test analysis, anddetermining the types of dolomite and petrology and distribution rules of various dolomites; and (3) according to the petrology and distribution rule of various dolomites, analyzing the form and formation mechanism of various dolomites and the quantitative relationship between the dolomites and gypsum salt rock, and finally determining the coupling relationship. By judging the source, the seepagedirection, the path and the like of dolomitic fluid, the coupling relation between the dolomitic fluid source and quantification of the bed series and gypsum salt rock is defined, and the method has important guiding significance for oil and gas exploration.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Method for combined exploitation of coal and its associated oil shales

The invention provides a method for combined exploitation of coal and its associated oil shales. The method comprises the construction steps that when the coal and its associated oil shales are located in a reasonable exploitation bed separation distance range, coal resources located at the lower portion are firstly exploited, a mine bearing pressure is fully utilized to destroy associated oil shales located in an overlying rock layer and reduce the strength; then, the associated oil shales at the upper portion are exploited later to achieve combined exploitation of coal and its associated oil shales. Therefore, the shortcoming that when oil shales are independently exploited, the oil shale strength is higher and accordingly a coal cutter difficultly break rocks can be overcome. According to the exploitation method, existing infrastructures and sinking and driving engineering can be fully utilized, the roadway tunneling amount can be decreased, investment can be reduced, the costs are low, the phenomenon that the oil shales associated with coal are severely abandoned can be effectively completely eradicated or decreased, the resource utilization rate can be improved, an economic value is huge, and the method has the important practical significance on relieving of conventional energy source supply and demand pressure, energy structure adjustment and energy guaranteeing.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Whole-journey gas-proof gas content measuring instrument and method for using the same to measure residual gas of rock sample

The invention discloses a whole-journey gas-proof gas content measuring instrument and a method for using the same to measure residual gas of a rock sample. The measuring instrument comprises a sample smashing system, a heating system and a gas gathering and metering system, wherein the sample smashing system comprises a sample smashing tank capable of being closed, and a gas outlet is formed in the sample smashing tank; the heating system is used for heating the sample smashing tank; the gas gathering and metering system comprises a gas gathering and metering barrel used for gathering and metering the gas separated from the sample smashing tank, and the gas gathering and metering barrel is hermetically connected with the gas outlet of the sample smashing tank. The whole-journey gas-proof gas content measuring instrument uses the multi-functional integrated design, the operation is flexible, the use is facilitated, the gas-proof effect is good, the gas measuring error can be reduced, and the measuring accuracy and precision are improved; when measuring the residual gas of the rock sample, the whole-journey gas-proof gas content measuring instrument is capable of precisely and quickly measuring the residual gas content in shale, coal bed, tight sandstone and the like reservoirs, a sample tank does not need change in the whole journey of experiment, and the gas tightness is rigid; the gas measuring error is small, and the measuring precision is high.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)

Integrated drilling tool for crushing and cleaning drilling borehole rock debris deposit bed

The invention discloses an integrated drilling tool for crushing and cleaning a drilling borehole rock debris deposit bed, and relates to the field of drilling tools. A scraping and cleaning short joint is a columnar pipe body, more than one convex edge spiral wing is longitudinally arranged on the annular wall of the scraping and cleaning short joint, the convex edge spiral wings are longitudinally arranged in a V-shaped circumferential interval mode, hard alloy convex blocks are evenly distributed on the edge faces of the convex edge spiral wings, the two ends of each V-shaped convex edge spiral wing are connected with cutting edges which are sunken inwards and warped outwards, and columnar cutting teeth are arranged on the surfaces of the cutting edges; and a V-shaped sunken flow guidegroove is formed between every two adjacent V-shaped convex edge spiral wings, and liquid flow nozzles which communicate with the interior of a pipe are arranged at the two ends of each flow guide groove. The V-shaped sunken flow guide grooves rotate along with a drilling rod, so that drilling fluid generates severe turbulence, and sedimentation of rock debris particles in a well section is effectively prevented; and meanwhile, formed rock debris bed particles can be efficiently stirred, and the stirred rock debris particles are captured by the flow guide grooves, then brought into a suspension layer with a high annular flow rate and thrown to a high-side annulus and a farther distance.
Owner:HELI TECH ENERGY CO LTD

Settlement monitoring device and method for high-support formwork

InactiveCN111272142AAvoid Construction Safety AccidentsOptical rangefindersHeight/levelling measurementLaser rangingMonitoring site
According to the settlement monitoring device and method for a high-support formwork, a datum point is arranged at the lower end, stretches into and is fixed to a stand column of a bed rock layer, thestand column is supported by the bed rock layer with stable geological properties, the datum point arranged on the stand column cannot settle due to settlement of a soft soil layer in a correspondingarea, and therefore it is guaranteed that the datum point is kept still all the time; monitoring points are arranged on the high-support formwork and synchronously settle along with the high-supportformwork; an unmanned aerial vehicle, a camera and a laser range finder are matched, the vertical distance between the laser range finder and the reference point is H, the linear distance between thelaser range finder and a monitoring point is measured through the laser range finder, and the corresponding first linear distance L1, the corresponding second linear distance L2, the corresponding first angle [ alpha] and the corresponding second angle [beta] are obtained in sequence to be used for calculation and analysis, the vertical height change value D of the monitoring point is obtained, and therefore whether sedimentation happens to the high-support formwork or not and the sedimentation amount are accurately judged.
Owner:广州市重点公共建设项目管理中心 +1

Fine identification method for advantageous lithology of shale oil

ActiveCN110965999AImprove the overall efficiency of exploration and developmentImprove efficiencyBorehole/well accessoriesLithologyRock core
The invention discloses a fine identification method for the advantageous lithology of shale oil. The fine identification method for the advantageous lithology of the shale oil comprises the steps that three main mineral components are selected to establish a board chart according to X-ray diffraction mineral component data of lithic fragment or core sample minerals in a shale bed section, and fine division of the shale type lithology is achieved; and the shale stratum advantageous lithology division standard is established according to gas logging parameters, rock pyrolysis analysis and brittleness index data. According to the fine identification method for the advantageous lithology of the shale oil, the board chart is established through the X-ray diffraction mineral component data to distinguish the lithology, and the advantageous lithology of a shale stratum is judged by combining the gas logging parameters, rock pyrolysis analysis and the brittleness index data; firstly, the problem that denomination of the shale oil lithology is not clear is well solved, and the lithology can be accurately identified; and secondly, the data capable of identifying the advantageous lithology in the lithology are provided for oil testing and stratum selecting, the result meets the engineering service needs, and a reliable basis is provided for efficient oil and gas resource development of the shale stratum.
Owner:CNPC BOHAI DRILLING ENG +1
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