246 results about "Outcrop" patented technology

The invention discloses a method for forecasting a carbonate reservoir based on forward modeling of a digital geological model, and is characterized by comprising the following steps: in petroleum geological exploration, through a field carbonate geological outcrop collecting and data processing technology and combination with an actually-measured geological section, establishing a three-dimensional digital geological model of an outcrop area, according to an outcrop rock speed analysis chart and a drill speed data, establishing a speed model of the carbonate reservoir with different physical properties on the basis of the three-dimensional geological model, carrying out two-dimensional forward modeling and three-dimensional forward modeling, carrying out offset horning process on earthquake forward modeling data so as to obtain three-dimensional offset data or a two-dimensional offset section of the earthquake forward modeling, establishing reflecting characteristics of different carbonate reservoirs according to response characteristics of the earthquake section, and forecasting the carbonate reservoir. According to the invention, qualitative forecasting of the carbonate reservoir can be realized without a regular earthquake inversion, a large amount of manpower and device resources are saved, reliability and precision of forecasting of the carbonate reservoir in the earthquake are effectively improved, exploration and development risk can be reduced, and benefit is increased.

The invention discloses a comprehensive modeling method of a complicated mountain front tectonic zone and an established geologic structure model. The comprehensive modeling method comprises the following steps of recognizing and depicting rupture, explaining the rupture, checking the cutting relation and rationality of the rupture, driving a tectonic system according to major rupture, confirming stratum filling, preliminarily establishing the model and performing continuous adjustment and modification through forward earthquake modeling and forward gravity modeling to obtain the reasonable model. The comprehensive modeling method utilizes a field outcrop, gravity, a magnetic method, an electrical method, an earthquake, well drilling and other information to perform modeling and obtain a reasonable and correct subsurface structure and strata distribution, oil-gas exploration is performed with the information as a guidance, various information is organically integrated, one-sidedness of single information modeling is reduced, and a formed modeling technology effectively avoids the modeling subjectivity of different persons. Therefore, establishment of the geologic structure model of the complicated mountain front tectonic zone is facilitated, an oil-gas accumulation position is confirmed, the exploration risk is reduced, and the exploration success rate is improved.

The invention provides a foreland basin deep buried and compressed type complex gypsum-salt rock identification and distribution prediction method. The method comprises the following steps that: according to lithological vertical change in outcrop data, drilling data and logging data, a lithological sequence caused by sedimentary environment change is reserved, and a gypsum-salt rock deformation and overlying sequence caused by tectonic compression and fault repetition is eliminated, and an original lithologic sequence is established, and an ancient landform model of a research area is recovered through the original lithologic sequence, and a current tectonic model is recovered; and three-dimensional gravity, magnetic, electric and seismic joint inversion is carried out, and lithological and lithofacies interpretation of gypsum-salt rock at the surrounding region of a borehole is carried out through electrical methods, seismic facies and density anomaly and by means of the original lithologic sequence and the current tectonic model, and therefore, a lithological sequence plane distribution rule can be determined. According to the method provided by the invention, based on foreland basin gypsum-salt rock deformation characteristics which are obtained through geologic modeling, and geophysical methods such as three-dimensional gravity, magnetic, electric and seismic methods are adopted to perform joint inversion, and therefore, the distribution characteristics of post-deformation gypsum-salt rock can be accurately determined.

The invention discloses a prototype geologic model earthquake forward modeling method based on carbonate reservoir cropout, and belongs to the technical field of geologic model demonstration. Based on cropout profile fine geology description, fine depiction is carried out on reservoir vertical superposition style and spatial distribution rule, a carbonate reservoir heterogeneous quantitative geologic model is established, an earthquake collection instrument is used on cropout ground surface for carrying out earthquake reflected wave data collection, a geologic formation mechanism with earthquake reflection characteristics is analyzed, and a set of industrialized standard for quantitative recognition of carbonate reservoir earthquakes is formed, so that the problem that a mathematical physical model cannot represent carbonate reservoir prototypical features is solved. The method can mostly truthfully reduce the earthquake actual reflection characters of the reservoir, a prototype reservoir model is established through field outcrops, and the actual earthquake wave field information of the prototype cropout reservoir is analyzed, so that a carbonate reservoir earthquake quantitative recognition mode of the system can be established.

The invention provides a method for exquisitely depicting and predicting edge structures of carbonate platforms. The method comprises the steps of: establishing a high-resolution sequence stratigraphic framework through well-seismic combination; recovering an ancient landform according to a stratum residual thickness map and determining a development position of a platform edge; exquisitely dissecting the platform edge by utilizing seismic data, establishing development modes of different platform edge zones at different periods, and analyzing a development issue and a superposition style of areef flat body; determining plane distribution characteristics of the platform edge and development issue and scale of the reef flat body therein, and delimiting a beneficial reef flat development zone of the platform edge zone; and forwardly modeling the growth of a platform by using geological software, and optimizing a prediction result. The method for exquisitely depicting and predicting edgestructures of carbonate platforms is mainly based on a sedimentology theory and a sequence stratum theory, and is capable of carrying out exquisite dissection on platform edge structures and predicting distribution positions beneficial for reef flat bodies by sufficiently utilizing outcrop, seismic and drilling data, thereby improving the exquisite degree of platform structure depiction.

The invention relates to a method for exploiting (EXP) a subsurface deposit comprising at least one outcrop, the exploitation (EXP) of the deposit is based on a geological model (MOD) formed from a photogrammetry. The method reconstructs the geological outcrops in three dimensions (R3D) from photographs (PHO), and interprets the geological elements thereof, such as the sedimentary surfaces, the geological facies, the fault lines and the fractures, the inclination of the beds, etc. to construct a geological model of the deposit (MOD).

The invention discloses a eliminating outcrop water method of tailing dam and it includes the following steps: drilling hole: drilling hole as required depth, angle and direction in the tailing dam to forming the pore path leading to the top of the dam from the lower; pulling the tubes: pulling the specially-produced drainage pipes into the pore path drilled in the tailing dam; decortication: taking off the outer layer of protective layer of drainage pipes. The specially-produced drainage pipes of the method comprise of the body pipe, the gauze and the protective layer which are prepared out the body pipe one by one, said body pipe is equipped with percolating water groove along the axial center direction of pipe body uniformly and the bottom of percolating water groove is equipped with percolating water holes which reach the inner of pipe body discontinuously. The invention is facilitating to construction, the effect of drainage is fine and it is good for eliminating the hidden danger of the tailings dam is in danger, cave-in collapse and breaking.

The invention belongs to the field of application of a high-spectrum technology to oil gas fine geology, and relates to a based dense sandstone reservoir outcrop porosity characterization method based on the high-spectrum technology. The method comprises the steps of acquiring field outcrop information by utilizing a ground laser radar technology and a ground high-spectrum imaging technology; establishing a high-precision digital outcrop surface layer model; and based on the digital outcrop model, predicting the porosity by utilizing high-spectrum data to realize macroscopic characterization of dense sandstone reservoir outcrop porosity. The method has the advantages of simple process, convenience for operation and accurate data, and can quickly obtain macroscopic, quantitative and accurate porosity data of a reservoir outcrop.

The invention discloses a method for calculating and optimizing the permeability tensor of fractured rock mass based on measured structural plane parameters, which marks control points on the rock outcrop surface and takes pictures of the rock outcrop surface from different angles at the same time. The three-dimensional coordinates of the control points of the structural plane traces on the photographs are located according to the coordinates of the marked control points, and the homogeneous regions are divided according to the clustering degree of the control points on the structural plane traces. According to the coordinates of the control points of the structural plane traces, a three-dimensional model of the structural plane traces in the homogeneous region to be measured is established. According to the three-dimensional model of structural plane traces, the information of structural plane traces length, occurrence and spacing is extracted. Statistical analysis of trace length, occurrence and spacing of structural planes is carried out to determine the random distribution types and parameters obeyed by them. According to the type and parameter of random distribution, the permeability tensor of the homogeneous area to be measured is calculated. The invention improves the accuracy and efficiency of the structural plane information processing, and simultaneously improves thecalculation efficiency of the infiltration tensor and the optimal path identification in the calculation module.

The present invention provides a dominant-lithology-based carbonate rock lithic facies characterization method, which comprises: collecting the outcrop, the well boring and well logging data, the paleontological fossils and the geochemical data at the target layer section of a study area, carrying out comparing and analyzing with seismic data, and carrying out fine dividing and comparing on the stratum at the target layer section of the study area; carrying out high-frequency sequence stratigraphic dividing and comparing on the target layer section of the study area, and establishing a high-frequency sequence stratigraphic grillwork; observing, describing and classifying the outcrop and the cores of each well in the study area, and establishing a lithology evolution sequence in the targetlayer section of the study area; carrying out comprehensive calibration on the cores of each well, the outcrop, the seismic data, the well logging data and the mud logging data, determining the lithology combination characteristics, and quantitatively dividing the dominant lithology; dividing and describing the single wells and the outcrop lithic facies by using the dominant lithology; and completing a finely divided carbonate rock lithic facies profile map within the isochronous sequence stratigraphic grillwork, completing a dominant lithic facies plane layout map within the sequence stratigraphic grillwork, and completing the dominant-lithology-based characterization of the carbonate rock lithic facies.

The invention discloses an experiment system for a high-pressure outcrop plane model. The experiment system comprises a high-pressure bin system, an annular pressure system, an injection system, a vacuumizing saturation system, a high-pressure bin pressure protection system, a control acquisition system and an outlet measurement system, wherein the high-pressure outcrop plane model is arranged in the high-pressure bin system; the high-pressure bin system is connected with the annular pressure system, the vacuumizing saturation system, the injection system, the outlet measurement system and the control acquisition system respectively; and the high-pressure bin pressure protection system is connected with the control acquisition system and the annular pressure system respectively. According to the experiment system for the high-pressure outcrop plane model provided by the embodiment of the invention, the automation of experiment operation and data acquisition is realized, experiment difficulties and operation difficulties are greatly reduced, a foundation is laid for large-scale experiments of the plane model, and a powerful tool is provided for the research of low-permeability and extremely-low-permeability reservoirs.

A method for ordering electrofacies to assist in identification of mineral deposits is disclosed. Automated ordering of electrofacies allows geologists to draw inferences about the geological settings in which sediment deposit occurred without directly examining core samples or outcrops. The electrofacies order is determined by (a) training a one-dimensional linear self-organizing map to form an initial neural network that includes a plurality of neurons. The number of neurons is small in comparison to the number of electrofacies kernels (i.e., not greater than one-third the number of electrofacies kernels). (b1) A neuron is selected from the initial neural network. In the next step (b2), the processor determines if more than one electrofacies kernel is attached to the neuron. (b3) If more than one electrofacies kernel is attached to the neuron, then the neuron is split into the number of electrofacies kernels attached to the neuron. (c) Steps (b1)-(b3) are repeated until all neurons in the initial neural network have been processed. In the next step, (d) a self-organizing map is trained to form a final neural network using the split neurons in the initial neural network as initial state. (e) Steps (b1)-(d) are repeated if more than one electrofacies kernel is attached to a neuron with the initial neural network equal to the final neural network. In the last step (f), each electrofacies kernel corresponding to a neuron in the final neural network is correlated to an order number.

The invention discloses a targeted acidification fracturing physical simulation method for pore-type carbonate rock and application, and belongs to the technical field of oil and gas exploration. Themethod comprises the steps that a fresh outcrop sample corresponding to a deep pore-type carbonate rock reservoir is collected and processed into a cubic sample; a manually-drilled pore is prefabricated in the end face of the cubic sample; acid liquid is injected into the artificially-drilled pore, and an acidized pore is formed after a reaction; a simulated wellbore is manufactured, and a simulated jetting pore is drilled in the wellbore; after the simulated wellbore is prefilled, a simulated casing pipe is put into the simulated wellbore, and annulus sealing fixation is conducted; fracturingfluid is pumped by a true triaxial model test machine to simulate acidification fracturing; after the reaction is fully conducted, curable glue is injected and fully infiltrated; after the sample istaken out and dried, the carbonate rock is removed, and a targeted acidification fracturing three-dimensional shape formed by the curable glue is obtained. By means of the method, the indoor simulation of natural carbonate rock pores is achieved, the targeted acidification fracturing physical simulation method is established to achieve directional cracking of artificial cracks, and the method canbe used for evaluating the targeted acidification fracturing effect.

The embodiment of the invention provides a nonequivalent modeling method and a device for a heterogeneous reservoir stratum. The nonequivalent modeling method comprises the following steps: selecting a field outcrop of the heterogeneous reservoir stratum and analyzing the field outcrop to obtain an internal structure of the heterogeneous reservoir stratum; collecting imaging logging data, carrying out statistic analysis on the imaging logging data, dividing the heterogeneous reservoir stratum into a cave type, a fracture type and a fracture-cave type; and collecting conventional logging data and determining elastic parameters of a fracture-cave body in different positions according to the logging data so as to form a nonequivalent model of the heterogeneous reservoir stratum. According to the nonequivalent modeling method and the device disclosed by the invention, by analyzing the imaging logging data, the trend and distribution characteristics of fracture and caves of a carbonatite heterogeneous reservoir stratum are researched in microcosm and the guarantee can be provided for finely engraving the fracture-cave body; and according to the statistical analysis of the logging data, all elastic parameters of the fracture-cave reservoir stratum are accurately positioned.

The invention relates to an earthquake forward modelling method based on rock outcrop radar detection. The method includes the following steps: selecting a rock outcrop profile and setting a radar detection measuring line; performing rock outcrop section measurement and geological description; respectively selecting 100MHz and 400MHz radar antennas to continuously detect the rock outcrop section along the measuring line and obtaining the radar section data detected by the antenna at the corresponding frequency; performing data imaging processing on the acquired radar data; stimulating the earthquake forward modelling result of the described rock outcrop section by means of the radar data imaging processing result; and comparing the low-frequency and high-frequency earthquake forward modelling results to obtain the respective earthquake reflection characteristics of the same rock outcrop geologic body in the high-frequency and low-frequency earthquake data and to guide the geological interpretation of earthquake data of an underground reservoir. A typical rock outcrop is taken as a geological model, so that the defects of geological model simplification and idealization in the earthquake reflection forward modelling simulation method based on value simulation and physical model physical simulation can be overcome.

The invention relates to the technical field of ecological environment protection and control, in particular to application of cynodon dactylon to vegetation construction and ecological control in large-depth water flooded drawdown areas of reservoirs and riverbanks. The vertical flooding depth h in the large-depth water flooded drawdown areas of reservoirs and riverbanks is more than 10m and not more than 30m. Tests prove that cynodon dactylon can survive after undergoing long-time and large-depth flooding and can grow well after recession and outcrop, can well adapt to the drawdown area environment alternating between land and water, can ensure the drawdown areas to have surviving vegetation all the year round, has strong capability of immobilizing the soils in the drawdown areas and capability of reducing washing of runoff, can reduce soil losses in the drawdown areas, simultaneously can serve as an excellent barrier belt between land and water at the reservoir bank, greatly improves the ecological environment quality in the drawdown areas and has good application prospect, wherein the longest continuous flooding period is 8 months and the largest vertical flooding depth is 30m.

The invention relates to a three-dimensional large scale physical model of a fracture-cave type carbonate reservoir and a preparation method of the three-dimensional large scale physical model. The model is composed of a simulated karst cave, a simulated fracture and a constant temperature oven. The preparation method specifically includes the steps that a carbonate rock outcrop which is tested and analyzed is sealed through a reaction still to simulate the karst cave, and a fracture is simulated through pipeline filling to press carbonate grains; valves and joints are used for connecting the sealed simulated karst caves and the simulated fractures which are in different number and different space positions, so that a simulated carbonate fracture-cave network structure is formed and mounted in the constant temperature oven, and the three-dimensional large scale physical model of fracture-cave type carbonate rocks is formed. According to the three-dimensional large scale physical model of the fracture-cave type carbonate reservoir and the preparation method of the three-dimensional large scale physical model, not only a complex space network structure between actual reservoir stratums of fracture-cave type carbonate oil and gas reservoirs can be simulated, but also the physical and chemical properties of solid phase reservoir rocks can be reflected, high temperature and high pressure conditions of the actual reservoir stratums can be simulated, and production effects when wells are drilled at different positions can be simulated.

The invention discloses an accurate value obtaining method for the shearing strength of an engineering rock mass joint. The method comprises the following steps that: the engineering rock mass is subjected to engineering geologic zoning to carry out rock mass structure analysis, a potential glide plane which affects the stability of the engineering rock mass is determined, and a potential glide direction is determined on the potential glide plane; a joint outcrop corresponding to the potential glide plane is searched as a JRC (Joint Roughness Coefficient) measurement joint; according to the potential glide plane, survey segments Li are evenly arranged, all survey segments Li are subjected to the directional statistical measurement of the JRC, measurement results are subjected to statistics to obtain a JRC size effect fractal dimension D; and according to the rock mass structure analysis, the joint length Ln of the joint corresponding to the potential glide plane in the glide direction is determined, the JRCn of the sampled LN is calculated, and a JRC-JCS model is model is used for carrying out accurate value obtaining on the shearing strength of an engineering rock mass joint. The method has the advantages of being convenient in operation, low in cost, good in use effects and convenient in realizing the accurate value obtaining method for the shearing strength of the engineering rock mass joint.

The invention provides a piedmont region sedimentary facies belt distribution scope prediction method. The method comprises steps that according to a field outcrop section identification sedimentary facies type of a research region, measurement points are selected, and a distance between each measurement point and an object source is measured; actual thickness of each rock stratum of a stratum corresponding to each measurement point and actual thickness of the stratum corresponding to the measurement point are calculated; according to the acquired thickness of the stratum corresponding to each measurement point and actual thickness of each sandy conglomerate stratum of the stratum, and a sand-to-stratum ratio of each measurement point is calculated; according to the distance between each measurement point and the object source and the sand-to-stratum ratio data corresponding to the measurement points, the function relationship between the sand-to-stratum ratio and the distances away from the object source is established; according to the function relationship between a sand-to-stratum ratio and the distance away from the object source of to-be-predicted sedimentary facies, a sedimentary facies belt distribution scope is predicted. The method is advantaged in that based on field outcrop sand-to-stratum ratio analysis, an extension distance of the piedmont region sedimentary facies belt can be accurately determined, and the sedimentary facies belt distribution scope can be accurately predicted.

The invention relates to a manufacturing method of an oriented fluid inclusion thin sheet of a wild outcrop sand rock sample. The manufacturing method comprises the following steps: collecting an outcrop sand rock sample in an oriented manner and carrying out original occurrence recovery; calibrating a cutting direction; carrying out first-time cutting according to the calibrated cutting directionto obtain a sheet production sample block; carrying out coarse grinding, fine grinding, refined grinding and polishing on a horizontal plane of the sheet production sample block; sticking a glass slide; calibrating a number and a direction of the sheet production sample block on the stuck glass slide; carrying out second-time sample cutting on the sheet production sample block; carrying out coarse grinding, fine grinding, refined grinding and polishing on a cutting surface of a thin sheet obtained by the second-time sample cutting; carrying out quality inspection on the oriented fluid inclusion thin sheet. According to the manufacturing method provided by the invention, the original direction property of the outcrop sand rock sample can be effectively kept and direction information of thesand rock sample is accurately represented in the manufactured fluid inclusion thin sheet; premised guarantees are provided for carrying out accurate analysis on the aspects including petrographicalcharacteristics, distribution directions, development periods and the like of a fluid inclusion surface.

The invention discloses a double-acting double-pipe single-bit coring drilling tool and an application method thereof, and belongs to the field of geological exploration boring machines. The double-acting double-pipe single-bit coring drilling tool comprises an inner-outer core barrel connector, an outer pipe, an inner pipe and a drill bit body arranged at one end of the inner pipe. The outer pipe and the inner pipe are fixed to the inner-outer core barrel connector. An annular gap is reserved between the outer pipe and the inner pipe. A water dividing hole is formed in the inner-outer core barrel connector. Four to eight flange ribs are uniformly distributed on the outer side face of the drill bit body and each provided with a step. The steps of the flange ribs are sleeved with the end of the outer pipe. A row of hard alloy drill bits is embedded in the bottom face of the drill bit body, and a row of hard alloy drill bits are embedded in the bottom faces of the flange ribs. The coaxiality and the integral rigidity of the drilling tool are improved by means of the flange rib type drill bits, and vibration of the drilling tool during drilling is reduced; in addition, the rock core sampling quality and efficiency of quaternary loose strata, bed rock weathering zones and coal seam outcrops are remarkably improved; and meanwhile, the drilling efficiency is improved.

The invention discloses a carbonate rock reservoir logging identification method based on empirical mode decomposition and energy entropy discrimination. According to outcrop and rock core information, carbonate rock reservoirs are divided into three types, i.e., karst type reservoirs, karst fracture-cave composite type reservoirs and micro-pore type reservoirs, therefore making clear microscopic and macroscopic characteristics of different reservoirs. Single-well reservoirs are calibrated by means of rock core information, imaging logging and array acoustic logging information, and typical logging response characteristics of different reservoirs are qualitatively described. An automatic reservoir identification method based on logging information empirical mode decomposition and energy entropy discriminant analysis is proposed, thereby effectively improving the reservoir identification accuracy rate. The method gets rid of uncertainty of traditional mono-stratum evaluation, relatively meticulously extracts the change law of inter-stratum logging response, and effectively solving the problem that it is difficult to identify the reservoir type during carbonate rock petroleum reservoir exploitation.