144results about How to "Lower Exploration Costs" patented technology

A marine oil and gas exploration system used for measuring telluric currents as a natural electromagnetic energy source flowing beneath an ocean and sea floor. The marine exploration system includes a towed fish adapted for being pulled behind a survey ship. The coordinates of the ship and the towed fish can be controlled by a GPS satellite and time data. The fish includes an aerodynamic waterproof housing, somewhat reminiscent of a shape of a fish. Metal sheet electrodes of electric field sensors are mounted on the surface of a tubular nose extending outwardly from the housing. The electric field sensors are in direct contact with the sea water. Typically, the fish is towed approximately 100 feet above the sea floor. The positioning of the fish is maintained by the use of an acoustic “pinger” on the fish. The pinger transmits signals up a towed cable to the survey ship. The fish can also include a cesium magnetometer connected to the electric field sensors. The magnetometer provides for detecting low frequency magnetic components of the electromagnetic fields generated by the telluric currents flowing under the sea floor. A filtering of the magnetic component signals is used to provide a phase and amplitude references for the electric fields. The amplitudes of the electric field at each frequency are ratioed against the amplitudes of similarly filtered components of the magnetometer.

The invention relates to oil-gas prospecting technical field, especially using the petroleum inclusion and asphalt to distinguish the oil reservoir and fulfill the migration tracing. With the statistical data from the petroleum inclusion and asphalt, the invention may distinguish the oil reservoir during the drilling (including the prospecting and development) or later; and determine the petroleum migration direction, and trace its routing, search the prevailing migration channel etc. under multi-stage migration and accumulation, fulfill the multi-stage and multiple genesis statistics for petroleum inclusion, trace the oil-gas migration during different geologic phase, determine the oil-gas migration direction and prevailing channels during different stages, and the variation of physical and chemical conditions during migration, thereby recovers the history of oil-gas migration and accumulation, provides the important basis for finding the oil-gas distribution law and advantageous areas for oil-gas migration and accumulation.

The invention discloses a method for determining an oil and gas reservoir-forming age and relates to the technical field of oil and gas reservoir forming. According to the technical scheme, the method mainly includes the steps that research area oil-bearing formation inclosure flakes and apatite minerals are acquired; the inclosure formative periods and sequence are researched, the inclosure formative periods and sequence are determined, and hydrocarbon inclosure and saline inclosure are screened; through combination of a cold and hot table and a polarizing microscope, homogenization temperature of the hydrocarbon inclosure and saline inclosure with different attitudes is quantitatively acquired; thermal evolutional history model parameters are determined, the fission track length and density of apatite are counted, the fission track age is calculated, a multielement sector-shaped annealing model is established, and set geological conditions are screened; AFSolve software is used for thermal history simulation, and an optimal thermal history path T-t curve is acquired; the oil gas one-period or multi-period reservoir-forming time is determined. According to the method, the problems that in the prior art, oil and gas reservoir-forming age prediction precision is low, and multiplicity of solutions is high can be effectively solved, and great significance is provided for predicting oil and gas favorable zones and reducing the exploration cost.

The invention relates to a method for realizing oil-gas detection by applying a long-offset distance transient electromagnetic array method. The method comprises the following steps: firstly, carrying out ATEM (analytical transmission electron microscopy) observation on a detection region to acquire data; selecting measuring points without obvious distortion or negative anomaly of electric field components while an induced polarization field is not stripped, utilizing the ATEM data for inversion, and acquiring a high-resolution lamellar specific resistance model in a detection region; then carrying out ATEM forward operation to obtain transient induced electric field or magnetic field attenuation curves of all the measuring points in the detection region; substracting the electric field or magnetic field component attenuation curve acquired during forward operation by the actually observed ATEM electric field or magnetic field component attenuation curve at the same observation time point to obtain a time domain induced polarization spectrum; applying a time domain induced polarization method for inversion to obtain the polarizability of an underground medium; and carrying out detection and evaluation on an oil-gas reservoir by utilizing the specific resistance and polarizability parameters. According to the invention, the accuracy and reliability of exploration on the oil-gasreservoir by utilizing an electromagnetic method are greatly enhanced, the working efficiency is improved, and the exploration cost is lowered.

A gravity-type pore pressure dynamic penetration device for exploration of shallow-layer seabed soil includes a third drop hammer, a second drop hammer, a first drop hammer, a stable empennage, and a probe rod which are sequentially arranged from top to bottom. A sidewall friction sleeve is arranged outside a probe rod lower cylinder. A friction sleeve sensor is provided on an inner sidewall of the sidewall friction sleeve. A fast pore water pressure sensor, a conical tip pressure sensor, a temperature compensation sensor, and an inclinometer sensor are provided in the middle of the probe rod lower cylinder. A second pore water pressure sensor and an acceleration sensor are provided in the middle of a probe rod upper cylinder. The tail portion of the probe rod, that is, the upper portion of the probe rod upper cylinder is connected to the stable empennage.

The invention provides a multi-frequency resistivity exploration method. The method comprises the steps of 1) transmitting current signals with different frequencies through n grounded power supply electrodes and an infinity power supply electrode by adopting an electrical transmitter capable of transmitting n mutually independent current signals with different frequency values; 2) acquiring n electric field total signals with different frequencies between two grounded measurement electrodes through an electrical receiver in a target area to be measured, separating the electric field total signals with different frequencies to obtain potential different data of n frequencies; 3) acquiring three-dimensional coordinates of the positions of the power supply electrodes and the measurement electrodes; 4) performing conversion between the potential difference data of the different frequencies and apparent resistivity data based on an apparent resistivity algorithm of electrical exploration;6) performing inversion processing on all of the apparent resistivity data to obtain real resistivity distribution characteristics of the target area to be measured; and 7) analyzing geological characteristics of the target area to be measured based on the real resistivity distribution characteristics. The method is conducive to significantly improving the field work efficiency and the explorationeffect of electrical exploration and reducing the cost of electrical exploration.

The invention discloses a method for sedimentary microfacies logging recognition based on a support vector machine and relates to the technical field of exploration and development. The novel method which is based on an SVM (support vector machine) algorithm and applies logging materials to conduct sedimentary microfacies quantitative recognition is characterized in that each sedimentary microfacies can be represented by a group of logging curve characteristic parameters, samples of a microfacies type are mapped into a higher-dimensional space through nonlinear conversion, and optimal classification faces between each microfacies are sought in the high-dimensional characteristic space; and finally, a decision making function is constructed, so that microfacies types of unknown samples can be determined, and the sedimentary microfacies judgment can be achieved. According to the invention, an SEA technology (sedimentary microfacies automatic recognition method) is used for sedimentary microfacies automatic recognition of a clastic rock reservoir, and judgment accuracy is high; and a reliable judgment basis is provided for optimal selection of beneficial target reservoirs in oil-gas exploration and development, so exploration cost is reduced, and values of application and promotion are high.

The invention relates to the technical field of oil development oil reservoir engineering, in particular to a low gas-oil-ratio oil reservoir gas logging evaluation method. By adoption of the low gas-oil-ratio oil reservoir gas logging evaluation method, the problems that the interpretation coincidence rate is low, understanding of oil and gas reservoirs is not clear, and oil-water relation analysis is unknown during exploration and development are solved, and the exploration effect is improved. The low gas-oil-ratio oil reservoir gas logging evaluation method comprises the following steps that firstly, oil well data are obtained; secondly, parameter quality is controlled, specifically, a gas logging quality control curve template is established, gas logging data are input into the quality control curve template, and the gas logging data with the quality control ratio being within the range of 0.8-2.0 are selected to serve as analysis data meeting quality requirements; thirdly, parameters are selected, specifically, a relation between the gas logging data and an oil-water-gas layer is discovered through a grey correlation degree analysis method; and fourthly, the parameter research and oil reservoir gas logging evaluation method is established. A two-dimensional linear crossplot-gas logging interpretation chart is established, and different interpretation conclusion ranges are marked out.

The invention belongs to the technical field of three-dimensional earthquake CT, and discloses a pure surface three-dimensional observation system suitable for high-speed rail tunnel bottom earthquakeCT. An earthquake source point is arranged on one side of the rail, and a receiving point is arranged on the other side of the rail. An earthquake wave is excited by the earthquake source point and passes through a tunnel bottom medium to enter the receiving point so as to receive an earthquake signal. The pure surface three-dimensional observation system disclosed by the invention can not only achieve three-dimensional fine detection of the tunnel bottom structure, but also can greatly reduce the exploration cost of the tunnel bottom detection; after once excitation of 24 excitation points arranged at equal intervals in the observation system, each wave detection point can receive 24 data, and the total data volume is 24*24=576, which is much higher than the 24 data of one array of the conventional two-dimensional detection, so that the fluctuation information amount of an underground geological body is greatly improved, the detection accuracy is greatly improved, and pure surface three-dimensional CT detection,that is, three-dimensional CT detection without drilling, is realized for the three-dimensional underground space data; and the exploration cost of the tunnel bottom detection is greatly reduced.

The invention belongs to production techniques of ferronickel, and particularly relates to a method for producing pellets from laterite-nickel ore, which comprises the following steps: proportioning: evenly mixing 1-4 wt% of bentonite, 1-8 wt% of quicklime and the balance of nickel oxide; pelletizing: adding water to the uniform mixture until the water content reaches 10-15%, and pelletizing by using a pelletizer; screening to remove raw materials of which the particle sizes are smaller than 10mm, thereby obtaining qualified raw pellets; and roasting to solidify, and cooling to obtain the nickel pellets. In the invention, the pellets are made into alkaline ore with a certain alkalinity, and the amount of coke is reduced in the blast-furnace smelting, thereby improving the physical properties of the blast-furnace smelted ferronickel; and in the ferronickel smelting process, the coke ratio is low, the yield is high, and the content of nickel in the smelted ferronickel is high.

The invention discloses a system for separating and purifying mercury in natural gas. The system comprises a separating device and a purifying system, wherein the separating device is used for separating and enriching mercury in natural gas, so as to form a first-level mercury-containing mixture; the purifying system comprises a mercury reductant carrying device, a mercury vapor carrying device and an absorbing device; the mercury reductant carrying device is connected with the separating device and is used for reducing the mercury ions in the first-level mercury-containing mixture into mercury vapor; the mercury vapor carrying device is connected with the separating device and is used for conveying the mercury vapor to the absorbing device so as to form a second-level mercury-containing mixture. The system is simple in operation, is nontoxic and pollution-free and is capable of quickly and accurately measuring the mercury content in natural gas, so that a corresponding oil-gas exploration method can be designed for the mercury content in natural gas, the exploration cost is saved, the scale benefit and development can be realized and the gap of quickly separating and purifying mercury in natural gas in the present oil gas industry can be filled.

The invention discloses a uranium ore well logging quantitative method combined with instantaneous neutron time spectrum to correct natural gamma total amount in the field of uranium exploration and in-situ leaching uranium mining. Specifically, the uranium ore well logging quantitative method comprises the steps that for uranium-bearing rock ore beds in a borehole, two types of well logging datawhich are natural gamma total well logging and instantaneous neutron time spectrum well logging are used for constructing a uranium ore quantitative interpretation method with uranium-radium-radon balance correction, wherein the uranium ore quantitative interpretation method is based on the natural gamma total well logging; and well logging data of standard model wells are used for contrasting a calculating method of scale parameters such as conversion coefficient and background response required for uranium ore quantification. Compared with the uranium ore quantitative method of single instantaneous neutron time spectrum well logging or natural gamma total amount well logging, the uranium ore well logging quantitative method does not need core sampling and chemical analysis methods, so that the balance coefficient of uranium-radium-radon can be calculated, the well logging speed further be greatly improved, the advantages of improving drilling efficiency, reducing exploration cost andshortening uranium quantitative period are further provided, and the field analysis of uranium ore quantification by computer programming is realized.

The invention discloses an integrated device for cross-plate testing and sampling and a use method thereof. The device comprises the following components: a cylinder, the upper end of which can be connected with a drill pipe; a lifting motor, which is fixedly installed in the cylinder; a screw rod , connected with the lifting motor, and matched with a nut fixed in the barrel; the twisting motor, connected at the lower end of the screw rod; the cross head, connected with the twisting motor through the shaft; the sampling cylinder , detachably mounted on the lower end of the cylinder. The invention can not only obtain the undisturbed soil sample, but also complete the on-site cross-plate test, and even further measure the pore water pressure of the natural soil at the same time, so as to achieve multiple functions in one drill and realize the purpose of reducing the exploration cost. In the present invention, a lifting motor and a torsion motor are arranged in the barrel at the lower end of the drill rod, and the cross plate head is connected nearby, so that a more realistic shear strength value of natural soil can be obtained.

The invention relates to the technical field of oil-gas exploration, and discloses a method for recognizing the oil-gas possibility of an underlayer structure. The method comprises the steps of collecting light dydrocarbon of a known oil-gas well sample and obtaining relevant parameters of the light dydrocarbon through gas chromatography; drawing a frequency distribution diagram of the relevant parameters of the light dydrocarbon and screening out light dydrocarbon indexes with the right deflection feature or the two-peak feature in the frequency distribution diagram; drawing a broken line graph of the screened-out light dydrocarbon indexes on the section of a known oil-gas well or the section of a dry well or drawing a classification bubble diagram of the screened-out light dydrocarbon indexes on the plane, and comparing the broken line graph with the classification bubble diagram; screening out light dydrocarbon internal composition specific value parameters having correlation, wherein the light dydrocarbon internal composition specific value parameters serve as indexes to recognize the oil-gas possibility of the unknown underlayer structure. Compared with the existing oil-gas exploration technology, the method has the advantages of being low in exploration cost, short in period and high in success rate and having good industrial application prospects.

The invention provides an oil-gas zone effective evaluation method and device. The oil-gas zone effective evaluation method comprises control factor parameter distribution of an interval of interest,wherein control factor parameters comprise stratigraphic dip, fault, effective unconformity with effective hydrocarbon generation range of hydrocarbon source rocks, reservoir thickness, cover thickness, oil generation abundance and gas generation abundance; obtaining evaluation parameter lower limit of an industrial value oil and gas reservoir, wherein evaluation parameters comprise reservoir thickness, porosity, cover thickness, oil generation abundance and gas generation abundance; obtaining a reservoir formation parameter value of each grid coordinate point according to the control factor parameter distribution; obtaining an evaluate parameter processing value of each grid coordinate point according to the evaluation parameters of the grid coordinate point, the evaluation parameter lower limit and the reservoir formation parameter value; and obtaining a zone evaluation value of the interval of interest according to the evaluation parameter processing value of each grid coordinate point. The invention provides the oil-gas zone effective evaluation method and device capable of improving evaluation coincidence rate.

The invention discloses a method for predicting the transverse wave time difference by using logging data, and belongs to the technical field of petroleum logging. According to the method, a transverse wave time difference curve is constructed by using longitudinal wave time difference and density in an oil layer and/or a water layer section, a natural gamma relative value is calculated out by using natural gamma logging, and then a relevant relationship between the natural gamma relative value and the transverse wave time difference is established. A formula for predicting the transverse wavetime difference is established by using conventional logging data, so that accurate acquisition of the transverse wave time difference in any stratum (including oil, gas and water layers) is realized, the transverse-to-longitudinal wave time difference ratio and the Poisson's ratio which reflect properties of a reservoir fluid and parameters such as the Young's modulus, the bulk modulus and the shear modulus which reflect mechanical properties of a reservoir rock are calculated by using the transverse wave time difference, and the purposes of effectively identifying the gas layer and quantitatively evaluating the mechanical properties of the reservoir rock are further achieved.

The invention belongs to a method for detecting a uranium mine, and specifically discloses a method for detecting a paleochannel type uranium mine. The method includes: four seismic lines in the shape of a Chinese character "feng" are laid; the seismic lines in the shape of the Chinese character "feng" are provided with detectors, an excitation source, and a seismograph; the excitation source is started, seismic vibration signals are generated, and the seismograph is turned on to observe seismic amplitude data received by the detectors; seismic data processing of seismic original single-shot data is performed; seismic data stratigraphic interpretation of seismic result data C is made, and stratigraphic data D is obtained; standardization processing of sound wave data and density data in a research region is performed, and the sound wave data SON_standard and the density data DEN_standard after standardization are obtained; according to C, D, SON_standardj, and DEN_standardj, wave impedance data volume [omega]res is obtained by employing jason inversion software and an inversion method based on a model; and according to the wave impedance data volume [omega]s, preferable mineralization areas of the paleochannel type uranium mine on the four seismic lines are determined. According to the method, the mineralization environment of the paleochannel type uranium mine can be rapidly, economically, and effectively detected.

The invention discloses a uranium ore logging instrument fusing a natural gamma energy spectrum and a neutron time spectrum, and a uranium quantitative equation, and particularly relates to a basic structure of the uranium ore logging instrument which can measure the natural gamma energy spectrum formed by natural radioactive elements in a rock stratum and an ore deposit and the instantaneous neutron time spectrum caused by pulse neutron uranium fission point by point along drilled holes, and the quantitative equation for determining the contents of the natural radioactive elements such as uranium, thorium, radium and potassium in the rock stratum and the ore deposit through the two types of logging data. The uranium ore logging instrument fusing the natural gamma energy spectrum and the neutron time spectrum, and the uranium quantitative equation are organic combination and data fusion of two nuclear logging methods, especially, aiming at the natural gamma logging method for uranium ore quantification, the uranium ore logging instrument fusing the natural gamma energy spectrum and the neutron time spectrum, and the uranium quantitative equation have the effects that radioactive balance correction without uranium, radium and radon is achieved and thus core sampling and chemical analysis are not needed, and then have the advantages that the drilling efficiency is improved, the exploration cost is lowered, and the uranium quantification cycle is shortened, and uranium ore quantitative analysis in a drilling site can further be achieved through computer programming.

The invention discloses a three-dimensional complex geologic model label manufacturing method suitable for a machine learning algorithm, is applied to the seismic data processing field, and aims at solving the problem that a three-dimensional geological model constructed in the prior art does not completely conform to stratum deposition and geomechanics rules. The method is based on the theories of stratigraphic sedimentology, tectonic geology, geotectonic mechanics and the like; a stratum deposition rule and a stratum stress condition generated by a fault are considered; factors such as connection among karst caves, holes, fractures and faults are avoided; a three-dimensional complex geologic model label manufacturing method suitable for a machine learning algorithm is provided, construction of a large number of three-dimensional geologic models conforming to actual geological conditions is achieved, a seismic wave field response simulation technology is combined, and conditions are provided for extracting complex geologic structure oil and gas reservoir related parameters from seismic data through the machine learning algorithm.

The invention discloses a device and a method for preparing slurry liquid by utilizing seawater. The device comprises a seawater pretreatment device, a reverse osmosis device, a slurry stirring pool and the like, wherein the seawater pretreatment system is provided with an active carbon filter and a nanofiltration membrane filter, the reverse osmosis device consists of a plurality of RO (Reverse Osmosis) components, an EDI (Electrodeionization) equipment is used for removing residual Na<+> ions and Cl<-> ions, and a disincrustant in a storage tank, ultrapure water and an electromagnetic valve control switch form maintenance of the reverse osmosis device. According to the method disclosed by the invention, natural seawater flows into the seawater pretreatment system by being pressurized by a booster pump, water after treatment passes through the reverse osmosis device by being pressurized by a high-pressure pump, and produced pure water and bentonite are stirred to prepare the slurry liquid. In addition, the pure water passes through the EDI deionization equipment to produce the ultrapure water use as domestic water for offshore exploration operation, so that the materials produced in the method are used according to the needs and work according to respective ability, and therefore, factor restriction that offshore exploration is limited by a platform space, load, fresh water transportation, fresh water preparation cost and the like is broken through, and the exploration cost is effectively lowered. Furthermore, a maintenance system with the unique design ensures that the service life of the RO components is longer.

The invention provides a drilling hydraulic differential type density transducer steady-current bearing device, and belongs to the technical field of oil and gas exploration. The drilling hydraulic differential type density transducer steady-current bearing device structurally comprises a transducer supporting rod and a transducer pressure diaphragm piece. The transducer pressure diaphragm piece is arranged on a rod body of the transducer supporting rod. The outer periphery of the transducer supporting rod where the transducer pressure diaphragm piece is located on is provided with a ball cover. The ball cover is formed by connecting an incident flow surface half ball cover and a back flow surface half ball cover in an oppositely buckled mode. The transducer supporting rod penetrates through a ball shell in the longitudinal axis direction. A drooping falling opening is defined at the bottom end by an incident flow reverse rotating curved wing and a back flow reverse rotating curved wing. The transducer supporting rod extends downwards and penetrates out of the drooping falling opening. Nose wing holes are evenly formed in the one-third concentrated area of the ball crown surface ofthe back flow surface half ball cover, and the nose wing holes facing the consistent direction form a nose wing hole filtering net. By means of the drilling hydraulic differential type density transducer steady-current bearing device, density measurement errors are eliminated, accurate density data are provided for establishment of a safe drilling fluid system, the drilling hydraulic differentialtype density transducer steady-current bearing device is advantageous to the safety of drilling construction, and the density of a drilling fluid is truly reflected.

The embodiment of the invention discloses an abnormal electric power information positioning method and device, electronic equipment and a computer medium. A specific embodiment of the method comprises the following steps: acquiring electric power information of each line in all lines transmitted by a transformer substation in a preset time period; determining the average value of the voltage qualified rates in the voltage qualified rate group as the average voltage qualified rate; determining a variable capacitance load ratio group, a line capacitance load ratio group and a line residual use duration included in the power information corresponding to each alternative voltage qualified rate in the alternative voltage qualified rate group as an alternative variable capacitance load ratio group, an alternative line capacitance load ratio group and an alternative line residual use duration; and generating an abnormal electric power information group based on the alternative voltage qualified rate group, the alternative variable capacitance load ratio group, the alternative line capacitance load ratio group and the alternative line residual use duration group. According to the embodiment, the efficiency of line exploration and detection is improved, so that maintenance personnel can find an abnormal line in time and maintain the abnormal line.

The invention relates to a multifunctional shale geological exploration drill bit and a working method thereof. The multifunctional shale geological exploration drill bit comprises a drill rod connecting system, an auxiliary power system, a switching system, a sampling system and a cutting system which are sequentially and coaxially connected from top to bottom; a locking system is arranged between excircles of the auxiliary power system and the switching system; and spiral conveying impellers are coaxially arranged in the auxiliary power system and the switching system. The drill bit can workunder the condition that power is transmitted and conveyed through a drill rod at a wellhead, a shale sample can be obtained through a force application system of the drill bit, and a new technical means is provided for exploration and development of shale; and all components of the drill bit are convenient to mount and dismount, the sampling and drilling functions are achieved, the drilling androtating power of the drill rod can be utilized, and operation can also be conducted through the power of the drill bit.

The invention relates to an exploring and coring mining process method of mineral resources comparatively deeply buried, in particular suitable for exploring and coring mining thin mineral resources comparatively deeply buried under a thick covering layer with a high dip angle. According to the method, branch holes are derived and drilled from a parent drilling hole, to avoid an invalid drilling working amount that the drilling hole group repeatedly penetrates the covering layer from the ground, therefore, an effective distance between a drilling starting point and the mine is closer and the exploring footage is greatly reduced; a ''true/false'' exploring result among critical holes of a high-angle objective is avoided. The method is a rake-type drilling exploring method which realizes multiple branches on a main, greatly shortens the exploring cycle, reduces the exploring cost and greatly reduces an influence of a mud pit pollution on the environment, and brings considerable social environmental-friendly benefits and economic benefits in the exploration of the deep resource.