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85 results about "Lake basin" patented technology
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Lake water quality evaluation prediction system and method based on factor weighting model
InactiveCN105913411AAccuracy needs to be guaranteedEfficient and accurate comprehensive evaluationImage enhancementImage analysisEnvironmental resource managementWater quality
The invention discloses a lake water quality evaluation prediction system and method based on a factor weighting model. The method comprises the following steps: through different lake area pollution thermal graph color conditions, knowing each lake pollution contrast; through obtaining lake basin weather indexes, feeding time vector weather temperature information and each weather index to a user; displaying an accomplishment of an improved factor weighting model; and through combination with a correlation analysis algorithm, emitting an alarm to the user for each current standard-exceeding water quality index and prediction standard-exceeding indexes. According to the invention, the factor weighting evaluation model capable of more accurately evaluating water quality is established. Through numerous data tests of the model, it is proved that the algorithm operation efficiency and the water quality evaluation accuracy are greatly improved. A factor weight based evaluation model is established, a future lake water quality and environment development trend is reasonably predicted and analyzed, most visual water quality change and lake area differences can be given to the user, and water supply environment management advice is provided for sustainable development of a nine-like basin.
Owner:YUNNAN UNIV
Method of quantitative determination of background concentration of nitrogen and phosphorus of water body of lake basins
ActiveCN103473463ALow environmental requirementsEstimated concentrationSpecial data processing applicationsBackground concentrationsEutrophication
The invention discloses a method of quantitative determination of background concentration of nitrogen and phosphorus of a water body of lake basins. The method comprises the main steps of: 1) collecting and settling essential data; 2) dividing a small watershed of a lake; 3) screening a reference small watershed; 4) establishing a regression model, and predicating a background load of the nitrogen and the phosphorus of the reference small watershed; 5) calibrating a regression equation of the background load of nitrogen and phosphorus nutrients of the lake basins; 6) computing the background concentration of the nitrogen and the phosphorus of the water body of the lake basins. The method provides a new way for researching a lake eutrophication problem, lays a foundation for a standard of the nutrients of the lake, and has important practical significance for determination of the background concentration of the water body of the lake basins, and protection, evaluation and management of the lake.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Water environment intelligent management platform for river and lake watershed
InactiveCN109242291ARealize intelligent simulation predictionRealize evaluationGeneral water supply conservationForecastingWatershed managementTotal nitrogen
The invention belongs to the technical field of watershed management and provides a water environment intelligent management platform for river and lake watershed. The system combines the real-time monitoring system of multi-source data of river and lake basin, automatic data transmission, storage and intelligent analysis system, the multi-source data fusion visualization system on the same platform, aiming at realizing more comprehensive, scientific and efficient management of the water environment of the river and lake basin. The invention relates to a water environment intelligent management method of the river and lake watershed, which comprises the following steps of: real-time monitoring water quality factor, ecological factor, environmental factor, hydrological characteristic factor, building information factor and external destruction factor. Water quality factor is subjected to remote sensing inversion by multi-spectral UVA, the detecting indexes includ total nitrogen, total phosphorus, ammonia nitrogen, chemical requirement COD, chlorophyll, and the distribution of water quality is obtained by post-processing analysis. The real-time monitoring of ecological factors is toobtain orthophoto images through UAV remote sensing. The invention is mainly applied to environment monitoring occasions.
Owner:TIANJIN UNIV
Research method of trajectory design and on-site tracking and adjustment of shale oil horizontal well
ActiveUS10689954B1Trajectory rationalizationLayer is smallSurveyFluid removalThermodynamicsWell drilling
The present invention discloses a research method of trajectory design and on-site tracking and adjustment of a shale oil horizontal well, including identification and evaluation of shale oil sweet spots, optimal selection and trajectory design of the horizontal well, and on-site tracking and adjustment of the shale oil horizontal well. The “four-optimal and two-fine” practice in the research method of trajectory design and on-site tracking and adjustment of the shale oil horizontal well of the present invention lays a foundation for high and stable production of shale oil in closed lake basins and the integration of production and reserves increase. It provides a set of technical methods for the design and research of optimal selection of horizontal well locations and dynamic tracking analysis of drilling in shale oil development areas, and has great significance for reference and popularization.
Owner:DAGANG OIL FIELD OF CNPC
Lake basin ancient landform restoration-based quantitative method
ActiveCN107991714ASolve the accuracy problemImprove recovery accuracyGeological measurementsRock coreAcoustic wave
Owner:CHINA NAT OFFSHORE OIL CORP +1
Continental lake basin sedimentation micro-facies plane distribution map compiling method
InactiveCN107861171AMinimize conditions that affect analysis resultsComplete informationGeological measurementsThree levelBasic research
The invention discloses a continental lake basin sedimentation micro-facies plane distribution map compiling method. The method comprises the following steps: 1) five-level sequence framework divisionand sedimentary boundary determination; 2) identification of the sedimentary environment; 3) determination of sediment provenance and range of influence; 4) single well sedimentation micro-facies identification; and 5) sedimentation micro-facies plane mapping. The sedimentation micro-facies spatial distribution characteristic is indicated to be expressed under the scale of the five-level sequenceframework, sedimentation micro-facies identification is faced with the problem of dominant facies selection under the three-level or four-level sequence framework and the sedimentation micro-facies identification result is difficult to be objectively mastered. The geological information expressed by all the data is fully utilized to make good for deficiency, and the key operation steps are quantified so that the standard can be established for concrete operation and the situation of influencing the analysis result because of subjective judgment can be reduced. The mapping process is industrialized, and the compiling work of multiple sedimentation micro-facies maps under the constraint of the five-level sequence framework can be completed within a short period of time through batch statistics and data processing so that seamless connection of the basic research and the production requirements can be realized.
Owner:DAGANG OIL FIELD OF CNPC
Nearshore subaqueous fan conglomerate sedimentation unit body division method
ActiveCN105116467ASolve the contradictions of water injection developmentImprove water injection developmentGeological measurementsRiftSubaqueous fan
The present invention relates to a nearshore subaqueous fan conglomerate sedimentation unit body division method. The nearshore subaqueous fan conglomerate sedimentary unit body division method under the erratic event gravity flow spin back sedimentation effect control is established, with the accurate division of a rift lake basin steep slope belt nearshore subaqueous fan conglomerate sedimentation unit body as an object, on the basis of the research of a nearshore subaqueous fan sedimentation cause mechanism and a sink sedimentation simulation experiment, nearshore subaqueous fan conglomerate sedimentation unit body division identification and classification standards are established, with the nearshore subaqueous fan conglomerate sedimentation unit body division classification standard as a guidance, the seismic data and drilling data division of a nearshore subaqueous fan sedimentation unit body is carried out, with the seismic data and drilling data division of the nearshore subaqueous fan sedimentation unit body as a basis, with single well time-depth relation as a constraint, the crosswell comparison of the nearshore subaqueous fan sedimentation unit body is developed, the accurate identification and division of the rift lake basin steep slope belt nearshore subaqueous fan conglomerate sedimentation unit body are carried out, the nearshore subaqueous fan conglomerate sedimentation unit body can be accurately and effectively divided, and the spatial distribution range is determined.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Formation and enrichment evaluation method for continental facies mud shale oil in large freshwater lake basin
ActiveCN111694068AMeet the needs of explorationEarth material testingGeological measurementsKerogenLithology
The invention discloses a formation and enrichment evaluation method for continental facies mud shale oil in a large freshwater lake basin. According to the method, the method comprises the steps of:utilizing shale oil exploration drilling coring, lithology and lithofacies accurate description and geological experiment matching analysis, carrying out formation and enrichment evaluation on continental facies shale oil; respectively adopting parameters indexes such as depth, Ro, diagenetic stage, kerogen, free oil quantity, the total porosity, organic cleavage seams, inorganic cleavage seams, areservoir evolution mode, a shale oil evolution mode, establishing a matching relationship among a continental facies shale oil formation and evolution mode, a reservoir stratum pore formation and evolution mode and a reservoir stratum evolution history and generation evolution history; and determining for the first time that a window and a secondary pore development zone which are favorable forformation of shale oil are formed in the late middle diagenetic stage Ro1.1%-1.6%, so that necessary conditions are created for large-scale aggregation of shale oil through high coupling in time and space, optimal selection and exploration breakthrough of the continental facies shale oil dessert in the Songliao basin are guided, the lower limit of the exploration depth can be expanded to 2,600 m,and the dessert area is expanded to 13,000 km<2> from 5,800 km<2>.
Owner:PETROCHINA CO LTD +1
Preparation method and application of wetland plant and pig manure composite biochar
ActiveCN110354804AReduce nitrogen and phosphorus contentAvoid damageOther chemical processesWater contaminantsPig farmsGrowing season
The invention provides a preparation method of a wetland plant and pig manure composite biochar, and an application of the composite biochar in the adsorption of heavy metals in water. Typical wetlandplants of Poyang Lake are selected, the aerial parts of the wetland plants are harvested in the growing season, pig manure is obtained from a pig farm, the collected wetland plant biomass is washed with water, dried and crushed, the pig manure is dried and crushed sequentially, and the plant biomass and pig manure biomass are mixed according to a ratio 1:1 to form a mixed biomass; chitosan and alkali residues are dried, and are crushed and mixed according to a mass ratio of 1:1; the mixed biomass and the obtained chitosan and alkali residue powder are mixed according to a ratio of 10:1 to prepare a composite biomass; and the composite biomass is added to an iron solution, anaerobic hydrothermal carbonization is carried out to form the composite biochar, and the composite biochar is used for adsorbing heavy metals in water. The preparation method fully utilizes several typical wastes in the Poyang Lake basin, achieves the purpose of treating pollution with wastes, and also has the advantages of wide sources of raw materials, low cost, simplicity, and easiness in operation, and the prepared biochar adsorbent is nontoxic and harmless, and is friendly to the environment.
Owner:JIANGXI ACADEMY OF SCI
Method for identifying rift lake basin steep slope zone nearshore subaqueous fan sedimentary facies belt
The invention provides a method for identifying a rift lake basin steep slope zone nearshore subaqueous fan sedimentary facies belt, which comprises the steps of 1, acquiring seismic data of a block,conventional well logging data of a drilled well and well logging lithologic data; 2, determining single well sedimentary facies by using single well synthetic record calibration; 3, summarizing seismic facies characteristics of the nearshore subaqueous fan sandstone rock through a well-tie seismic section according to each single well synthetic record calibration; 4, identifying a sedimentary facies belt interface according to the seismic facies characteristics of the nearshore subaqueous fan sandstone rock; 5, dividing the sedimentary facies belt interface; and 6, determining planar distribution of the nearshore subaqueous fan sandstone rock sedimentary facies belt according to the combination of the seismic section and a well-tie sedimentary facies contrast section. The method for identifying the rift lake basin steep slope zone nearshore subaqueous fan sedimentary facies belt identifies a sandstone rock sedimentary facies belt through combining well drilling and seismic facies characteristics, is simpler and more convenient than a test method, and is more accurate and reliable than an empirical method.
Owner:CHINA PETROLEUM & CHEM CORP +1
Shale oil horizontal well track design and on-site tracking adjustment research method
InactiveCN109960897AGuaranteed maximum effectivenessImprove interpretation accuracySurveyFluid removalWell drillingStudy methods
The invention discloses a shale oil horizontal well track design and on-site tracking adjustment research method. The method comprises shale oil sweet spot identification and evaluation, horizontal well optimization and track design and shale oil horizontal well on-site tracking adjustment. A 'four-optimal-two-precision' method formed by the shale oil horizontal well track design and on-site tracking adjustment research method lays a foundation for realizing integration of high and stable yield of shale oil in a blocked lake basin and production and storage increase. A set of technical methodis provided for carrying out horizontal well position optimization design research and drilling well dynamic tracking analysis in a shale oil development area, and the method has great reference and popularization significance.
Owner:PETROCHINA CO LTD
Logging quantitative recognition method for gravity flow sediments in down-warped lake basin
InactiveCN105158802AGood quantitative recognition effectSeismology for water-loggingRock coreTectonics
The invention discloses a logging quantitative recognition method for gravity flow sediments in a down-warped lake basin and belongs to the technical field of recognizing gravity flow sediments. According to the technical scheme of the invention, firstly, with the observation on the core of a cored well, the identification of an indoor rock slice and the logging information as a basis, the type recognition, the summarization of lithological characters and the summarization of sedimentary tectonics are conducted. After that, according to the geological thought that indirect data (the logging information) are calibrated based on direct data (the rock cores of different types of gravity flow sediments), logging suites of good response performances for different types of gravity flow sediments are preferably adopted through the data mining approach. In combination with the macroscopic and microscopic analysis on the rock cores of different types of gravity flow sediments, a logging response standard for different gravity flow sediments and deep-lake mudstones is established. Finally, the above method is verified based on the cored well. The established recognition method is good in quantitative recognition effect for gravity flow sediments in a research area and can also be applied to other areas.
Owner:SOUTHWEST PETROLEUM UNIV +1
River channel structure capable of ecologically preparing river flowing into lake in lake basins
InactiveCN106869076ARestoring the ecological environmentImprove water qualityBreakwatersQuaysBuffer stripEcological environment
The invention belongs to the field of ecological repairing of water environments in lake basins and particularly relates to a river channel structure capable of ecologically repairing a river flowing into a lake in lake basins. The river channel structure comprises a river channel base, a river channel bank slope and river channel buffering belts. A layer of vegetation form ecological blanket is laid on the river channel base. Aquatic plants are planted on a river channel bank slope. The river channel bank slope comprises a river channel revetment and a river channel land area side bank, wherein the river channel revetment is a step type revetment and sequentially comprises a first-step ecological embankment, a second-step ecological embankment, a third-step ecological embankment, a fourth-step ecological embankment and a fifth-step ecological embankment from bottom to top. Terrestrial plants and herbaceous plants which are reasonably matched are planted on the river channel buffering belts, and the river channel buffering belts include the first buffering belt, the second buffering belt and the third buffering belt. The river channel structure is simple in structure and low in construction cost, the ecological environment of the river flowing into the lake in the lake basins can be repaired, the water quality of the river is improved, the ecological system of the river is recovered, and the self-cleaning capability of the river is improved.
Owner:江苏江达生态环境科技有限公司
Quantitative recovery method and apparatus for paleo-water depth
The invention relates to the technical field of paleoenvironment recovery, and specifically relates to a quantitative recovery method and apparatus for a paleo-water depth. The method comprises the following steps: determining a beach and dam development region in a research layer of a paleo lake basin; determining a single-point paleo-water depth of at least one typical well in the beach and dam development region; determining a Th content and a U content in the at least one typical well in the beach and dam development region, and according to the Th content and the U content, calculating a ratio of the Th to the U; according to the single-point paleo-water depths of all the typical wells and the Th / U ratio corresponding to positions of the single-point paleo-water depths, fitting a relation equation between the single-point paleo-water depths and the Th / U value, and recovering quantitative paleo-water depths of the typical wells; and according to the relation equation between the single-point paleo-water depths and the Th / U value, recovering quantitative paleo-water depths of other wells in a non-beach-dam development region in the paleo lake basin. Through the method, continuous quantitative paleo-water depth data of water body depth vertical and planar change of the paleo lake basin in the same deposition period can be obtained.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)
Method and device for obtaining growth law and sedimentary model of shallow water lake basin delta
ActiveCN103760617AImprove efficiencyHigh precisionOptical prospectingGeomorphologySedimentary budget
The invention provides a method and device for obtaining a growth law and a sedimentary model of a shallow water lake basin delta. The method comprises the steps that multiple time-phase remote-sensing images with certain time spans are obtained, and the time-phase remote-sensing images are combined and preprocessed; the water levels of the combined and preprocessed time-phase remote-sensing images are classified, and the time-phase remote-sensing images with the same water level class are selected to be analyzed; when the water levels of the selected time-phase remote-sensing images are the same, synchronous field sedimentary inspection is conducted, and various kinds of sedimentary microfacies recognition templates of the shallow water lake basin delta are built; according to the various kinds of sedimentary microfacies recognition templates of the shallow water lake basin delta, global-scope sedimentary microfacies explanation of the whole shallow water lake basin delta is conducted on the time-phase remote-sensing images with the same water level class, and multiple time-phase interpretation vectors are obtained; according to the multiple time-phase interpretation vectors, remote-sensing quantitative analysis is conducted on growth factors of the whole shallow water lake basin delta; according to the analyzed result, the growth law and the sedimentary model of the shallow water lake basin delta are obtained.
Owner:PETROCHINA CO LTD
Primer and method for detecting leuciscus waleckii in Dalai Nur lake basin
InactiveCN103498002AImprove accuracySimplify detection stepsMicrobiological testing/measurementDNA/RNA fragmentationForward primerMicrosatellite
The invention discloses a primer and method for detecting leuciscus waleckii in the Dalai Nur lake basin and relates to a primer and method for detecting the leuciscus waleckii. The primer for detecting the leuciscus waleckii in the Dalai Nur lake basin is a pair of microsatellite marker primers. A forward primer nucleotide detection sequence is shown as SEQ ID NO:1 and a backward primer nucleotide detection sequence is shown as SEQ ID NO:2. The method for detecting the leuciscus waleckii in the Dalai Nur lake basin comprises the steps that 1, the DNA of a sample is extracted; 2, PCR amplification is conducted; 3, gel electrophoresis is conducted on the capillary tubes, a sample fish with a 148bp stripe amplified is the leuciscus waleckii in the Dalai Nur lake basin, and if not, the sample fish is not the leuciscus waleckii in the Dalai Nur lake basin. The primer and method can be applied to the fields of fishery detection and animal resource protection.
Owner:HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
Coating method for sprouts of submerged plants by using oxygen-containing soil
InactiveCN102138393AMore dissolved oxygenHeavy loadSeed coating/dressingHorticulturePorosityClay minerals
The invention relates to a reconstruction method for large-sized aquatic plants; particularly, oxygen-containing soil is used for coating sprouts of submerged plants for the restoration of the submerged plants on polluted bottom sediment. Nitrogen, phosphorus and organic matters are removed from soil in a lake basin, and load oxygen of a solid-liquid interface serves as a coating agent through oxygenation treatment, so that the oxidation-reduction environment of the bottom sediment can be improved, the oxygen content of a bottom-layer water body can be improved, and a growth microenvironment independent from the bottom sediment is provided for the sprouts of the submerged plants; the coating agent slowly releases oxygen at the initial stage of the seed germination through different oxygenation methods such as homogenate aeration of the soil at low temperature, the mixing of the soil and oxygen-containing water and the like, so that sufficient oxygen is provided for the sprouts without leading to damage on the plants; clay minerals such as sepiolite, diatomite and the like are added in the coating agent, so that the porosity of rhizosphere can be increased, and the flow of oxygen surrounding the rhizosphere can be improved; and the coated sprouts of the submerged plants can resist against the influence of external disadvantages by the action of the coating agent; therefore, germination, growth and colonization can be quick, and the purpose of reconstructing the large-sized plants is finally achieved. Compared with the prior art, the technology needs low cost, is easy to operate and does not lead to secondary pollution and ecological risks.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Method for quantitatively evaluating oil content of continental lake basin low-porosity tight oil reservoir
ActiveCN111007230ARealize evaluationAvoid oily effectsEarth material testingAnalysis using nuclear magnetic resonanceSoil scienceRock core
The invention provides a method for quantitatively evaluating the oil content of a continental lake basin low-porosity tight oil reservoir. The method comprises the following steps: determining pore size distribution R original of a to-be-measured reservoir rock core; determining minimum pore throat diameter by using the Roriginal so as to determine the maximum breakthrough pressure and the formation temperature, and determining fluid content VAfluid and the oil content VAoil of the to-be-measured reservoir rock core under the temperature and pressure so as to represent the fluid content and the oil content of all pores, including communicating pores and non-communicating pores, of the to-be-measured reservoir rock core; determining breakthrough pressure and formation temperature corresponding to the median pore throat diameter by using the Roriginal, and determining fluid content VBfluid and oil content VBoil of the to-be-measured reservoir rock core under the temperature and pressureto represent the fluid content and oil content of the communicating pores of the to-be-measured reservoir rock core; and according to the VAfluid, the VAoil, the VBfluid and the VBoil, determining the oil saturation of the communicating pores, the oil saturation of the non-communicating pores and the total oil saturation to realize quantitative evaluation of the oil content of the continental lake basin tight oil.
Owner:PETROCHINA CO LTD
Method for evaluating formation and evolution of continental facies mud shale oil in large freshwater lake basin
ActiveCN111638317AEffectively guide the selection of \"dessert\"Effective guidance for exploration breakthroughsSurveyEarth material testingKerogenGas oil ratio
The invention discloses a method for evaluating formation and evolution of continental facies shale oil of a large freshwater lake basin, which is used for evaluating shale oil content recovery, a longitudinal dessert layer and a planar dessert area by utilizing a method of combining conventional core taking and geological experiment analysis of drilling, pressure-maintaining closed coring, frozensample oil content calibration and a logging technology. A continental facies shale oil formation and evolution evaluation mode is established by utilizing parameter indexes such as depth, Ro, kerogen, chloroform asphalt A, free oil quantity, absorbed oil quantity, gas-oil ratio and the like, so requirements of shale oil exploration are met. The method comprises the following steps of evaluatingthat a large amount of absorbed oil is converted into free oil at Ro1.1%-1.6%, the method is the most favorable stage of shale oil formation, the shale oil in the maturation and high maturation stagesis 1.5-3.5 times of that in the classic oil production mode, the optimal selection and exploration breakthrough of the shale oil dessert in the Songliao basin are guided, the exploration depth can beexpanded to 2600 m, the area of the dessert area is expanded by 1.2 times, and a material foundation for large-scale exploration of the continental facies mud shale oil in the large-scale freshwaterlake basin is laid.
Owner:PETROCHINA CO LTD +1
Fracturing transformation method for blocking lake basin shale oil reservoir layer
The invention provides a fracturing transformation method for a blocking lake basin shale oil reservoir layer. The method comprises the following steps of S1, obtaining key data according to existingwell logging data explanations, and determining the source reservoir configuration relations according to the longitudinal overlapping relation of different kinds of rock in well logging lithologic sections; S2, according to existing rock mechanics tests, ground stress tests and natural fracture distribution data, formulating a fracturing technology optimum selecting principle for reservoirs withdifferent source reservoir configuration relations; S3, dividing preponderant lithofacies according to the lithologic sections and the cloud-ground ratio, and formulating an optimum selecting principle for the classification of the preponderant lithofacies, a fracturing liquid anti-expanding system and proppants through the combination of existing core anti-swelling experiments and rock board embedding experiment data. By means of the fracturing transformation method for the blocking lake basin shale oil reservoir layer, according to the differences in the rock types and the stratum source reservoir configuration relations, the individualized fracturing liquid system can be optimally selected, the fracturing pump casting procedures can be optimized, and the fracturing transformation effectis improved.
Owner:DAGANG OIL FIELD GRP +1
Mud shale pulveryte facies research method
ActiveCN107766597AHigh precisionData processing applicationsEarth material testingTerra firmaWell logging
The invention provides a mud shale pulveryte facies research method. The mud shale pulveryte facies research method comprises the steps of 1, determining a mud shale pulveryte facies division scheme adopting combination of three elements including rock components, a structure and organic matter content; 2, building a mineral component, organic matter and structure well logging identification model; 3, according to the well logging identification model built in the step 2, performing well logging model identification on a segmented mud shale facies type of a single well in a research area; 4, performing restriction and correction on the mud shale facies type identified by the well logging model; and 5, performing full-area mud shale pulveryte facies identification and distribution law research. The mud shale pulveryte facies research method improves the precision of mud shale pulveryte facies prediction and lays a solid basic theoretical basis for shale oil and gas exploration and development of land facies fault lake basins.
Owner:CHINA PETROLEUM & CHEM CORP +1
Offshore basin sea lake environment identification method and system
ActiveCN110647650AResolve uncertaintyImprove accuracyDigital data information retrievalCharacter and pattern recognitionRock coreOceanic basin
The invention discloses an offshore basin sea lake environment identification method and system. The method comprises the following steps: judging whether an image of an nth stratum in a rock core image has a typical marine facies deposition structure or not to obtain a first deposition environment result; judging whether the change trend of the relative sea level change curve of the nth stratum is consistent with that of the global sea level change curve or not to obtain a second sedimentary environment result; judging whether the geochemical parameter value of the sedimentary rock sample iswithin a preset geochemical parameter range or not to obtain a third sedimentary environment result; judging whether the biological fossil in the nth stratum has marine ecological characteristics or not to obtain a fourth sedimentary environment result; and integrating the first sedimentary environment result, the second sedimentary environment result, the third sedimentary environment result andthe fourth sedimentary environment result to determine an offshore basin sea lake environment recognition result which is a sea basin, a land basin or a sea trace lake basin. The offshore basin sea lake environment is comprehensively recognized, and the recognition accuracy can be improved.
Owner:BEIJING NORMAL UNIVERSITY
Reference lake quantitative determination method based on human disturbance intensity
InactiveCN102789546AObjective determination of resultsDetermining the Science of OutcomesSpecial data processing applicationsQuantitative determinationPrincipal component analysis
The invention provides a reference lake quantitative determination method based on human disturbance intensity. The reference lake quantitative determination method based on the human disturbance intensity mainly includes: 1) in a target area, determining candidate reference lakes in the area, applying a principal component analysis method to determine human disturbance intensity indexes of lake basins, and establishing an evaluation index system and grade standards of the candidate reference lakes; 2) determining evaluation index weight, comparing importance of evaluation indexes of the candidate reference lake in pairwise mode, establishing a fuzzy complementary judgment matrix A based on a hierarchical structure, and performing consistent judgment on the matrix A, wherein the matrix A=(aij) 6*6, and 0<=aij<=1, aij+aji=1; 3) calculating single index connection degree between the candidate reference lakes and evaluation grades and comprehensive connection degree between the candidate reference lakes and the evaluation grades by using a set pair analysis method under the evaluation indexes of the candidate reference lakes; and 4) evaluating grades of the candidate reference lakes, and determining the reference lakes. The reference lake quantitative determination method based on the human disturbance intensity has important and real meaning for quantitative selection of the reference lakes and protection, evaluation and management of lakes.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Method for comprehensively developing and utilizing lake wetland based on technology of reclaiming rivers from lakes
ActiveCN103195015AExtend your lifePrevent eutrophicationWater resource protectionStream regulationLand transportEngineering
The invention discloses a method for comprehensively developing and utilizing a lake wetland based on the technology of reclaiming rivers from lakes. The method comprises the following steps of: building a low-lying embankment capable of being used as a highway roadbed in a lake basin between a main water inlet and a main water outlet, dividing and encircling the lake wetland into a plurality of lake sections, and manufacturing two river-in-lake water systems simultaneously; building four gate dams near the main water inlets and the main water outlets of the two river-in-lake water systems, and building a plurality of water gates and a plurality of water pump houses between the rivers in lake and the lake sections; and realizing flow-converging flood discharge, sand discharge and pollution discharge for the rivers in lake, reversible backflow for the double rivers, and clean water flood diversion and impoundment for the lake sections in the precondition of no change on the basic characteristics of the lake wetland by virtue of the water level control with a plurality of permutations and combinations, and formed by the facilities such as the rivers in lake, the lake sections, the gate dams, the water gates and water pumps, and according to water regimen information. With the adoption of the method, the water conservancy benefits and land transport benefits of flood diversion and impoundment, power generation, shipping, reclamation and the like can be obtained, the sediment accumulation of the lake wetland and the accumulation of endogenous pollution can also be greatly reduced, and the life of the lake wetland can be prolonged.
Owner:彭伟
Lake basin hydro-ecological function three-level zoning method
A lake basin hydro-ecological function three-level zoning method comprises: selecting a set of lake basin hydro-ecological function three-level zoning indexes, dividing a target basin DEM as a base map into zoning function units through hydrological analysis, spatially discretizing the zoning indexes on the zoning function units, and combining the similar hydro-ecological zoning function units with a second-order spatial clustering analysis method in combination with a lake basin hydro-ecological function two-level zoning boundary to preliminarily form a hydro-ecological function zoning draft; performing zoning check by utilizing hydro-ecological survey data, and adjusting the zoning indexes according to a zoning check result to correct the zoning draft; and finally determining a hydro-ecological function zoning boundary and making a lake basin hydro-ecological function three-level zoning map.
Owner:NANJING INST OF GEOGRAPHY & LIMNOLOGY
Plant colony optimization method capable of improving Dianchi Lake basin forest land water source conservation capability
InactiveCN104969815ARestore coverageImprove water conservation capacityCultivating equipmentsVegetative propogationPlant communityWater source
The present invention discloses a plant colony optimization method capable of improving a Dianchi Lake basin forest land water source conservation capability. Indigenous tree species occupy a large part, arbors are not lower than 1.5m and shrubs are not lower than 0.2m. Under the condition of not damaging previous vegetations, the arbors are replanted in a distance 0.6m far away from the roots of the arbors, and the shrubs are replanted in a mutual distance of 0.2m to form a compound vegetation system matching the arbors and the shrubs. A land with the gradient smaller than 25 degrees is prepared in a hole-shaped manner; and a land with the gradient more than or equal to 25 degrees is prepared in a fish-scale pit manner and the depth is 0.3m. In rainy seasons, nursery-grown plants are put by adopting a seam planting method. After the plants are planted, surrounding shrubs are properly cultured in a light transmitting manner, and trimmed branches and leaves are dispersed and paved on a forest land, and the process is continued for 3 years and is carried out once every year. At the second year after replanting, the forest land with the conservation rate not reaching 85% is replanted. The plant colony optimization method disclosed by the invention has the beneficial effects that the interception of canopy classes can be improved, litter layers and soil layers keep moisture, the direct surface runoff is reduced, and the water source conservation capability is improved.
Owner:YUNNAN AGRICULTURAL UNIVERSITY
Continental lake basin mud shale fine particle grain sedimentation type dividing method
InactiveCN108680594AFine research implementationEasy to identifyAnalysis using nuclear magnetic resonancePermeability/surface area analysisStructure of the EarthMaceral
The invention provides a continental lake basin mud shale fine particle grain sedimentation type dividing method, which comprises: 1, obtaining the oil content of mud shale, and grading according to the oil content result; 2, determining mud shale division parameters; 3, analyzing the mud shale division parameters, and clearly setting parameter grading and naming standards; 4, distinguishing whether the mud shale has a stratification phenomenon; 5, naming mineral structures and particle deposition types; and 6, establishing the identification of different fine particle sedimentation types. According to the present invention, the dividing method has characteristics of easy identification, simple operation, strong practicability and easy promotion, can finely divide the continental lake basin mud shale fine particle grain sedimentation types, and provides the effective assurance for the fine research on mud shale stratum and the unconventional shale oil-gas exploration by research personnel.
Owner:CHINA PETROLEUM & CHEM CORP +1
Water environment safety regulation and control model dynamic integration method and assembly based on WebService
ActiveCN111225034ASolve the problem of not being able to interact in real timeRealize distributed operationTransmissionRiver networkOperational system
The invention relates to a water environment safety regulation and control model dynamic integration method and assembly based on WebService. The method is based on the WebService technology of cross-programming language and cross-operating system platform. A model integration interface is designed, and a data layer-supporting layer-application layer three-layer architecture organization is adopted; calling, linkage calculation and operation state real-time interaction of a water environment safety regulation and control model are achieved; effect evaluation after Taihu lake river network water environment safety regulation and control is achieved. The problems that model research and development environments are different, platform integrated code rewriting workloads are large, models cannot be called remotely, multiple models cannot run at the same time, and model calculation results cannot interact with a platform in real time are solved. The model in the method is suitable for allmodels in the field of water environment safety regulation and control, through dynamic integration of the water environment safety regulation and control model based on WebService, the cooperative computing efficiency of a business platform is improved by 20% or above, and the scientificity of a water environment safety regulation and control decision of the Taihu Lake basin is greatly improved.
Owner:NANJING INST OF GEOGRAPHY & LIMNOLOGY
Shallow lake basin reservoir prediction method and device based on micro-ancient landform recovery
ActiveCN111983671AAccurately determine reservoir distributionAccurately determine the degreeSeismic signal processingRiver routingHydrology
The invention provides a shallow lake basin reservoir prediction method and device based on micro-ancient landform recovery, and the method comprises the steps: determining the position of a shuntingriver through the research of the micro-ancient landform recovery and earthquake facies of a target stratum series shallow lake basin; according to the deposition compensation principle, performing micro-ancient landform recovery, and determining the distribution mode of the diversion riverway; determining reservoir distribution characteristics in the shallow water lake basin of the target stratumsystem according to the distribution mode of the diversion riverway and the recovery of the micro-ancient landform; determining wave impedance attributes capable of quantitatively characterizing reservoir distribution characteristics; performing wave impedance seismic waveform indication inversion according to the determined wave impedance attribute; and slicing the inversion data volume to obtain a plurality of stratum slices so as to determine a deposition system and reservoir change of a target stratum series shallow water lake basin. By means of the scheme, the problem that the predictionresult is inaccurate when the shallow lake basin is predicted only through seismic data is solved, and the technical effect of accurately determining the reservoir distribution and development degreeof the shallow lake basin is achieved.
Owner:PETROCHINA CO LTD
Continental lake basin tight reservoir pore throat effectiveness quantitative evaluation method under geological conditions
ActiveCN111006985AEnables quantitative characterizationAchieving precise characterizationWater resource assessmentAnalysis using nuclear magnetic resonanceNMR - Nuclear magnetic resonanceRock core
The invention provides a continental lake basin tight reservoir pore throat effectiveness quantitative evaluation method under geological conditions. The method comprises the following steps: establishing a relational expression between nuclear magnetic resonance signal intensity and porosity; measuring a T2 spectrum of a to-be-measured reservoir rock core after saturated water treatment in a normal-pressure environment; sequentially applying confining pressure with different pressure values to the to-be-measured reservoir rock core after saturated water treatment to simulate the pressure-bearing change condition of a rock pore structure in the stratum burying process, and respectively measuring T2 spectra of the to-be-measured reservoir rock core after saturated water treatment under theconfining pressure with different pressure values; and according to the measured T2 spectra and the established relational expression between the nuclear magnetic resonance signal intensity and the porosity, determining the pore diameter-porosity distribution of the to-be-measured reservoir rock core under different pressure values, and quantitatively evaluating the change of different-scale effective pore throats of the tight reservoir under geological conditions, thereby realizing the quantitative evaluation of the effectiveness of different-scale pore throats of the continental lake basin tight reservoir under geological conditions.
Owner:PETROCHINA CO LTD
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