179 results about "Sedimentary rock" patented technology

A disposable downhole tool is disclosed. The tool is suitable for use as a frac tool. The tool includes a housing having an inner wall surface defining a bore. The tool also includes a valve structure disposed within the bore, the valve structure comprising a disposable plug seat, the disposable plug seat comprising a first natural material. The disposable tool may also include a disposable plug in fluid sealing engagement with the seat, the plug comprising a second natural material, the plug and the plug seat comprising a plug valve. The first and second natural materials may include sedimentary rock, such as various forms of limestone, including Carrara marble or Indiana limestone.

The invention relates to an exploration method of faulted basin slope oil reservoir distribution and belongs to the field of oil exploration technology. In allusion to the later period of faulted basin exploration, through statistics of related information of source rock, fluid potential, sedimentary rock phase and fault in a target area and according to the principle of source potential conduction, the above information is comprehensively analyzed so as to determine a favorable oil reservoir distribution area in the target area. Forward oil control exploration limitations are broken and are shifted to negative structure and positive structure. Comprehensive analysis is carried out according to an oil source, fluid potential, sedimentary facies distribution and fault occurrence in the area, the slope is evaluated, and a favorable exploration target area is selected.

The present invention is concerned with a procedure to quantitatively determine both, total and effective porosity of carbonated sedimentary rocks, and is based on the elaboration of molds of the rock pores-structure and on the determination of the volumetric and gravimetric properties of the rock and its mold.Determination of the effective porosity is achieved by using an original formula, developed by the authors of the present invention.Additionally, the structure of micro and nanopores in the rock is characterized by scanning electron microscopy (SEM), to identify relevant properties for permeability analyses such as: dimensions, shapes, type of connections, pore-structure patterns and pore throats. These and other parameters are used as indicators of the reservoir production and storage capacity.

A method of determining a parameter of interest of reservoir rock formation is described using the steps of measuring an x-ray attenuation or absorption distribution of a sample of said rock formation, identifying the mineral phase part of said distribution, and subdividing the mineral phase part of said distribution to derive classification or rock type information of said sample.

The invention belongs to the field of oil-gas-bearing system research and particularly provides a Re-Os isotope analysis method for oil and gas system organic matter research. The method includes the following steps of sample pretreatment, Re-Os separation, Re purification, Os purification and Re and Os isotope detection. A sample is high-evolution organic matter, preferably high-evolution organic-matter-rich sedimentary rock or high-evolution formation asphalt. The method is especially suitable for hydrocarbon source comparison and reservoir forming geochronology research under the organic matter high-evolution condition. According to the method, the high-evolution organic matter sample is fully dissolved, Re and Os elements are effectively separated and purified, accurate Re-Os isotope data of the high-evolution sample is acquired, the reservoir forming geochronology and hydrocarbon sources are determined based on the data, and a reference basis is provided for finding out the formation process of natural gas reservoirs or fossil oil reservoirs or other oil and gas systems and guiding exploration.

The present invention relates to assays for ascribing catalytic activity to rock samples by virtue of zero-valent transition metals potentially being present within the sample. Embodiments of the present invention are generally directed to novel assays for measuring intrinsic paleocatalytic activities (k) of sedimentary rocks for converting oil to gas and projecting the activities to the subsurface based on the measured linear relationship between ln(k) and temperature (T).

The invention provides a mixed reservoir water flooding degree logging interpretation method based on sedimentary micro-facies and lithofacies. The method includes the steps: finely comparing and dividing stratums; performing classification research of the micro-facies-lithofacies; building a four-property relationship chart of each facies zone, building a logging interpretation model suitable fora research area according to the micro-facies-lithofacies, taking a micro-facies-lithofacies discrimination model as bases to process actual data, and analyzing differences of reservoir logging interpretations on the basis; researching mixed reservoir water flooding condition by a water flooding layer quantitative evaluation method based on a entropy weight, building a mixed reservoir water flooding layer comprehensive evaluation standards, dividing oil layer water flooding grades, and summarizing a water flooding mode of an interest interval. According to the method, the producing degree ofout-of-control reservoir reserve of a mixed reservoir and final recovery rate are increased, a decreasing range of field output is effectively reduced, a stable yield deadline of an oil field is prolonged, ultimate reservoir recovery rate of the reservoir is obviously increased, and remarkable development effects and benefits are acquired.

The invention relates to a sedimentary rock reconstruction method and a sedimentary rock reconstruction system. The method comprises the steps that: rock particles with a fixed number are generated in a container with a fixed size according to rock particle radius distribution; the rock particles are subjected to sedimentation falling treatment under the effect of force, until the rock particles reach dynamic balance, wherein a condition of the dynamic balance is that a ratio of an average value of resultant force applied on the rock particles during the sedimentation falling process to an average contact force of contact points among the rock particles or a ratio of a maximal resultant force to a maximal contact force satisfies a priori condition; the dynamically balanced rock particles are subjected to a compaction treatment under the effect of formation pressure, until the strain of the integral rock particles on a vertical direction reaches certain threshold; and the rock particles obtained after the compaction treatment is cemented together, such that a rock is formed.

The invention provides a detecting system and a method for the lithology of an ultrasmall-caliber drilling hole. The detecting system comprises a drilling hole data acquisition module; the drilling hole data acquisition module comprises a metal shell probe, an image pickup unit and a natural gamma ray unit, wherein the image pickup unit and the natural gamma ray unit are arranged in the metal shell probe; the image pickup unit is arranged at the top part of the metal shell probe and comprises a vertical camera or a side camera or combination of the vertical camera and the side camera, wherein the vertical camera is arranged at the top part of the metal shell probe; and the side camera is arranged at the side wall of the metal shell probe. The invention is used for detecting the lithology and the layering thickness of the ultrasmall-caliber drilling hole, and can distinguish the lithologies and the layering thicknesses of the main lithology of the sedimentary formation such as grit, medium sandstone, fine sandstone, siltstone, yakatagite, mudstone, aluminium-soil mudstone, carbon mudstone, coal seam, limestone and igneous rock and the like mainly for the common sedimentary rock formation.

The invention discloses a mixed sedimentary rock classification and naming method based on content of three-end-member minerals. The upper limit value of the content of exogenous fragments in mixed sedimentary rock is determined according to effective productivity; according to rock components, a three-end-member classification scheme is determined; naming is conducted, wherein according to the contents of the rock components, basic names are determined, and then cement and special structures or diagenesis serve as modifiers to participate in naming; according to a specific naming rule, the basic names are determined respectively according to the mixed sedimentary rock with different main components, when the content of auxiliary minerals is 25-50%, 'material' serves as the additional modifier, and when the content of the auxiliary minerals is smaller than 25%, 'containing' serves as the additional modifier. In the method, the upper limit value of the content of exogenous fragment particles is determined according to effective productivity, the mixed sedimentary rock is named by means of the three end members including exogenous fragments, endogenous fragments and a carbonate interstitial material, a scientific classification system framework suitable for actual production application is constructed on the basis of taking sedimentary causes into consideration, and basic data can be provided for mixed sedimentary environment analysis.

The present invention relates to assays for ascribing catalytic activity to rock samples by virtue of zero-valent transition metals potentially being present within the sample. Embodiments of the present invention are generally directed to novel assays for measuring intrinsic paleocatalytic activities (k) of sedimentary rocks for converting oil to gas and projecting the activities to the subsurface based on the measured linear relationship between ln(k) and temperature (T).

The invention relates to a method for calculating the ancient gradient of a sedimentary body. The method includes the steps of: selecting a seismic section along an object source direction on a stratum contour plane graph, and obtaining a gradient direction of the ancient gradient of the sedimentary body; leveling a top level of the ancient gradient of the sedimentary body, thereby obtaining a top layer leveling line; according to a seismic interpretation horizon of the sedimentary body in the seismic section, obtaining a trend line of the seismic interpretation horizon; extending the trend line of the seismic interpretation horizon on the seismic section to intersect with the top layer leveling line of the gradient of the sedimentary body at a certain point, and obtaining a horizontal distance between an actual drilling point and the intersection point; at the actual drilling point between the top layer leveling line of the gradient of the sedimentary body and the seismic interpretation horizon, determining difference of elevation of the sedimentary body at the well point; and according to the horizontal distance and the difference of elevation of well point, obtaining the required ancient gradient of the sedimentary body, thereby providing a basis for space-time distribution of a sedimentary system of a well spacing density sparse oilfield in an exploring and developing assessment stage. The method provided by the invention can obtain the size and direction of the ancient gradient of the sedimentary body.

The present invention provides a method of producing a pelletized composition containing leonardite, sedimentary rock and gypsum. The method calls for pre-mixing the humic substance and the sedimentary rock for at least two weeks to yield a developed mixture prior to addition of other materials such as gypsum and pelletizing and drying the pellets to produce the final product. The invention also includes several pelleted compositions containing leonardite, rock phosphate and gypsum. In one aspect of the invention the rock phosphate comprises a mixture of sedimentary rock phosphate and igneous rock phosphate. In another aspect of the invention, the igneous rock phosphate comprises carbonatite and the sedimentary rock phosphate comprises phosphorite.

The invention provides a hydrocarbon accumulation threshold determining method and device. The method includes: selecting a research area from a to-be-researched sedimentary rock basin; acquiring the core analysis data and formation test and production test data of the research area; building the evolutionary relationship between the oil-gas possibility and the porosity of a research area inner reservoir according to the core analysis data and formation test and production test data; determining the critical porosity when the research area inner reservoir is a complete dry layer, and using the determined critical porosity as the hydrocarbon accumulation threshold of the to-be-researched sedimentary rock basin. The method has the advantages that the technical problem that the hydrocarbon accumulation threshold cannot be accurately and effectively determined is solved, the complexity of the hydrocarbon accumulation threshold determining method is reduced, and accuracy of hydrocarbon accumulation threshold determining is increased.

The present disclosure provides a diffusive gradients in thin films (DGT) probe test device for a sediment core in a lake, including: a sampling tube, where, a settlement limit device is disposed on an outer wall of the sampling tube and a DGT probe and a multi-parameter water-quality detection electrode are installed within the sampling tube; a movable mudguard device comprising a connecting rod and a mudguard, where, the connecting rod rotates around a rotating shaft to drive the mudguard to move from a position where an opening at the lower end of the sampling tube is sealed to a side of the sampling tube; a position-limit mechanism removably installed outside the sampling tube; a hammering device located above the sampling tube and fixedly connected to the sampling tube; and a floating ball located above the hammering device and connected to the hammering device via a first pull rope.

A method of making a glass product comprising: providing a feedstock formed from at least one sedimentary rock comprising at least two minerals suitable for making the glass product; melting the feedstock to form a melt; and forming a glass product from the melt.

A method is disclosed for identifying a sediment accumulation from an image of a part of the earth's surface. The method includes identifying a topographic discontinuity from the image. A river which crosses the discontinuity is identified from the image. From the image, paleocourses of the river are identified which diverge from a point where the river crosses the discontinuity. The paleocourses are disposed on a topographically low side of the discontinuity. A smooth surface which emanates from the point is identified. The smooth surface is also disposed on the topographically low side of the point.

The invention discloses a palaeogeomorphology restoration method in sedimentary period based on seismic reflection amplitude analysis. The method comprises the following steps: basic data collection;rock core calibration; single well synthetic record production and calibration and research of a target stratum; establishment of paleogeomorphology restoration well grid section; finding a lithologicinterface which is obviously related to the ratio of grainstone to stratum; establishment of a wedge forward model; summarizing correlation between thickness and amplitude of the established model; extraction of the amplitude; refitting of a correlation curve; evaluation of single well agreement rate; 3D visualization display of the extracted amplitude attribute diagram; and correction of three-dimensional paleogeomorphology to obtain accurate and quantitative three-dimensional paleogeomorphology. The advantages are that the method solves the problem that a conventional method relies on specific stratigraphic combination and seismic horizon tracking accuracy, and breaks the limitation that if there is no continuous tracking reflection interface above and below the target stratum, the sedimentary paleogeomorphology of the target stratum cannot be accurately restored; and seismic interpretation workload is reduced, and accuracy of paleogeomorphology restoration is improved.

The invention discloses a method for exploring lead zinc ore in a sedimentary rock host. The method has the advantages that exploration efficiency is high, and the exploration period is short. The method comprises the following steps that firstly, according to the geographical environment and spatial-temporal characteristics, whether a metallogenic system is a sedimentary rock host Pb-Zn-Cu multi-metal metallogenic subsystem is analyzed and judged; secondly, according to the characteristics of the sedimentary rock host Pb-Zn-Cu multi-metal metallogenic subsystem, distribution of points, collection of relevant samples and analytical research are conducted; thirdly, the clue of the lead zinc ore is determined according to a sample collection result and an analysis result in the second step; fourthly, a mineral geological survey is conducted; lastly, a trial trench is constructed and a well is drilled for further sampling analysis, and a mineralized zone or an ore body is delineated. The method for exploring the lead zinc ore in the sedimentary rock host has the advantages that the exploration efficiency is high, and the exploration period is short through implementation of the steps.

A sample of sedimentary rock and a sample of total organic matter isolated from the rock are heated in a sequence under an inert atmosphere and quantities of hydrocarbon-containing compounds, CO and CO2 released by each sample are measured. The residue from each sample originating from heating under an inert atmosphere is subjected to a heating sequence under an oxidizing atmosphere, and quantities of CO and CO2 released by each residue are measured. A quantity of hydrocarbon-containing compounds in free form in the rock is determined from measurements is carried out, from a quantity of hydrocarbon-containing compounds in free and retained form of the rock sample and a quantity of hydrocarbon-containing compounds in retained form in a sample of organic matter. The invention is used for oil exploration and exploitation.

The invention discloses an automatic identification method for shale microsections. The method comprises the steps that (1) at the first stage, rock slices are divided into igneous rock, sedimentary rock and metamorphic rock; (2) at the second stage, shale is identified from the sedimentary rock obtained according to classification at the first stage. The classification identification technologies adopted at the two stages are both the decision tree technology, and extracted characteristics all belong to statistical characteristics of RGB channels and fractal characteristics of gray channels of images of the rock slices. According to the method, the shale microsections are automatically identified through the information processing technology at the two stages, so that the problem of non-ideal classification results caused by data imbalance is solved. With respect to characteristic selection, the good fractal characteristics of the shale are fully utilized, and the method is applicable to automatic identification of the shale. The automatic identification method is simple and efficient in calculation and has expansibility, and the accuracy of the identification method can be improved along with an increase in data storage of the rock slices; the method has application value in geological prospecting and mineral research.

A lithofacies analysis method for continental facies fine-grained sedimentary rocks includes classifying lithofacies according to the lithology or lithological association mode, the content of organiccarbon, the content of silicon and the content of calcium, and establishing lithofacies classification rules; extracting a core of a to-be-analyzed fine-grained sedimentary rock, identifying a lithology or lithological association interface in the core, and determining the lithofacies type of the to-be-analyzed fine-grained sedimentary rock according to the lithology or lithological association and the lithofacies classification and naming rules; determining the characteristic parameters of each type of lithofacies, determining the favorable lithofacies, and establishing logging evaluation criteria of the favorable lithofacies. The lithofacies analysis method has the advantages that the lithofacies is classified according to the lithological association mode, the abundance of the organiccarbon, the abundance of the silicon and the abundance of the calcium, the lithofacies classification rules are established, and accordingly, the lithofacies analysis method can be applied to the continental facies fine-grained sedimentary rocks.

A disposable downhole tool is disclosed. The tool is suitable for use as a frac tool. The tool includes a housing having an inner wall surface defining a bore. The tool also includes a valve structure disposed within the bore, the valve structure comprising a disposable plug seat, the disposable plug seat comprising a first natural rock material. The disposable tool may also include a disposable plug in fluid sealing engagement with the seat, the plug comprising a second natural rock material, the plug and the plug seat comprising a plug valve. The first and second natural rock materials may include sedimentary rock, such as various forms of limestone, including Carrara marble or Indiana limestone.

The invention relates an identification method of andesine in a fine settlement (sedimentary rock), comprising the following steps: putting a rock slice under an orthogonal polarizing microscope; putting the object under test in an extinction position; rotating the objective table 45 DEG to allow the long axis of the object under test to be angled 15 DEG from the cross wire of the second quadrantand the fourth quadrant in the eyepiece of the microscope; inserting a gypsum test panel; allowing the long axis, which is a small refractive index, of the object under test to be overlapped with a small refractive index X of the gypsum test panel, acquiring andesine which has an interference color of blue, and detecting the content of andesine that has an interference color of blue with area visual assessment percentage method; then rotating the objective table 90 DEG to allow the long axis of the object under test to be angled 15 DEG from the cross wire of the first quadrant and the third quadrant in the eyepiece of the microscope; allowing the long axis, which is a small refractive index, of the object under test to be overlapped with a large refractive index Z of the gypsum test panel, acquiring andesine which has an interference color of yellow, and detecting the content of andesine that has an interference color of yellow with area visual assessment percentage method. According to the invention, the andesine in the fine-particle settlement (sedimentary rock) can be identified rapidly and accurately.

The invention relates to a method and to a device for sulfur characterization and quantification in a sample of sedimentary rocks or of petroleum products wherein the following stages are carried out: heating said sample in a pyrolysis oven (1) in a non-oxidizing atmosphere, oxidizing part of the pyrolysis effluents and continuously measuring the amount of SO2 generated by said part after oxidation, then transferring the pyrolysis residue of said sample into an oxidation oven (1′) and continuously measuring the amount of SO2 contained in the effluents resulting from said oxidation heating.