280 results about "Mudrock" patented technology

The invention relates to the technical field of underground cavern construction, and discloses a layered rock mass cavern excavation parameter dynamic optimization decision system and method, and the system comprises a rock stratum database building module, an excavation simulation module and an excavation model optimization module. The method comprises the following steps: collecting basic data such as engineering geological conditions, rock mechanical properties and ground stress distribution; establishing an initial rock stratum parameter database through a three-dimensional ground stress test and rock mass permeability characteristic analysis; establishing a stratified rock mass excavation simulation model, simulating a failure mode of a stratified rock stratum under excavation disturbance, and analyzing stress redistribution and a potential failure area; determining a cavern axis direction, an excavation sequence and support parameters according to a simulation result; acquiring surrounding rock deformation, loosening circle expansion and seepage characteristic change; and utilizing a damage proximity index to predict the distribution of the loose circles, and optimizing the stratified rock mass excavation simulation model. The method can adapt to various complex working conditions from a sand shale interbed to an ultra-deep fractured stratum and the like.

The invention discloses a method for predicting a favorable area of a thin-layer stacked sand body, and relates to the technical field of exploration and development of oil and gas reservoirs, and the method comprises the steps: generating a synthetic seismic record through well-seismic combination by using interval transit time and a density curve, aligning the synthetic seismic record with an actual seismic record, and building a three-dimensional frame model of a target layer of a research area; performing abnormal value elimination and standardization processing on the logging curve, making a statistical histogram, comparing peak separation degrees of sandstone and mudstone, and selecting the most sensitive curve to distinguish the sandstone and mudstone; and realizing well-side seismic trace waveform dynamic clustering analysis through singular value decomposition, and determining the number of effective samples. Based on the result of waveform indication simulation, the method is combined with the optimized seismic attribute to predict the thin-layer stacked sand body together, a systematic method is provided, the multiplicity of solutions of predicting the thin-layer stacked favorable sand body through the seismic attribute and the uncertainty of depicting the sand body by the sedimentary facies in the area with few wells can be reduced, and the prediction accuracy of the thin-layer stacked favorable sand body is improved. Therefore, the precision and reliability of thin-layer stacked sand body prediction are improved.

The invention discloses a tunnel blasting vibration prediction method suitable for a sand shale interbed area, and mainly relates to the technical field of tunnel blasting. Comprising the following steps: S1, determining key factors influencing the vibration velocity; s2, building a blasting vibration prediction model in the sand shale interbed area; s3, carrying out data normalization processing; s4, introducing a BP neural network to train the prediction model; s5, introducing a particle swarm optimization algorithm and initializing related parameters of a particle swarm; s6, improving a particle swarm optimization algorithm; s7, a sand shale interbed tunnel blasting vibration prediction model of the improved particle swarm optimization BP neural network is obtained, the model is combined with blasting characteristic parameters of specific sand shale interbed area tunnel engineering for prediction, and a blasting effect prediction result is obtained; according to the method, important theoretical guidance can be provided for blasting vibration prediction of the stratified structure with changeable rock strata, and a practical safety evaluation tool is provided for ground surface vibration velocity control of similar projects.

The invention relates to a quantitative evaluation method and device for an opposite relation of two-disc same-set sand shale of a fault. The method comprises the following steps: acquiring a three-dimensional seismic data volume, drilling data and logging data of a target work area to draw a top surface structure contour map of a target sand body; carrying out reservoir rock physical analysis and reservoir inversion to draw a thickness contour map of the target sand body; analyzing and determining the coordinate, the horizontal fault displacement and the vertical fault displacement of each sampling point at the fault center of the top surface development fault of the target sand body according to the top surface construction contour map; determining coordinate data of two sand body thickness sampling points corresponding to each sampling point of the fault center so as to obtain the average sand body vertical thickness of the two sand body thickness sampling points corresponding to each sampling point of the fault center; and determining the sand shale contraposition factor of the fault area corresponding to each sampling point of the fault center, and carrying out quantitative evaluation on the contraposition relation of the two sets of sand shale in the same set. The method can quantitatively, rapidly and accurately complete the quantitative characterization and evaluation of the contraposition relation of the two-disc same-set sand shale of the fault.

The present application relates to a kind of quantitative evaluation method of tendency composite fault mudstone daub effect, which can accurately calculate and determine the sealing capacity of different fault dip tendency, stratigraphic dip tendency lower fault, realize the prediction and evaluation of oil and gas migration direction.This method is used in the strike-slip fault zone of Zhunzhong area and western depression area in Junggar Basin, the scale thrust fault of the middle section of the southern margin of Junggar Basin and the normal fault oil and gas fine exploration research in Xianhe area of Jiyang depression in Bohai Bay Basin, successfully predicted multiple fault-controlled oil and gas enrichment favorable zones, increased the drilling success rate by 30%, fully proved from the practice level that the technology is suitable for the fault sealing evaluation in China east and west, plays an important role in the prediction of fault-controlled oil and gas reservoir and fault migration path.

The present application relates to oil and gas exploration and development technical field, especially to a block stratum pressure prediction system and method based on three-dimensional seismic information, comprising a data acquisition module, a depth domain conversion module, a three-dimensional gridding work area modeling module, a dynamic lithology volume generation module, a sparse survey line compaction modeling module, a three-dimensional pressure field calculation module and a dynamic regulation and control module. The three-dimensional grid model with well location markers is constructed to realize full space coverage and eliminate the limitations of two-dimensional data. The sparse survey line strategy controlled by structural features is used to process pure mudstone node data, which significantly reduces the calculation load. Based on the dynamic lithology probability threshold, reliable data sources are screened, and the lithology correction coefficient of sandstone area is combined to improve the pressure prediction accuracy. The real-time drilling DC index is used to close-loop verify the prediction results and trigger the regulation and control instructions. The present application effectively solves the technical bottlenecks of insufficient spatial coverage, low calculation efficiency and large prediction deviation in complex geological structure area.

The application provides a calculation method of pore pressure of a tectonic compression formation. The calculation method of pore pressure of the tectonic compression formation comprises the following steps: S1, obtaining a density trend curve, and performing integral calculation on the density trend curve to obtain overburden pressure S V ; S2, determining total porosity POR of the formation based on acoustic logging, density logging, neutron logging or nuclear magnetic resonance logging; S3, analyzing characteristics of a target layer section to determine a tectonic compression coefficient ACm_C of the formation; S4, solving a pore pressure coefficient PP of a mudstone section based on a pore pressure model corrected based on the tectonic compression coefficient ACm_C; S5, determining a relationship between effective stress P eff and biot coefficient α and total porosity POR; and S6, inversely deducing a pore pressure coefficient of a reservoir section according to the relationship between the effective stress P eff and the total porosity POR. The application solves the problem of low calculation accuracy of the pore pressure calculation method in the prior art.

The invention relates to the technical field of petroleum geophysical exploration, and provides a reservoir forming period hydrocarbon source rock paleo-pressure quantitative prediction method and system, and the method comprises the steps: solving the stratum denudation thickness based on a mudstone compaction curve extrapolation method; obtaining the thickness of a terrain skeleton, constructing a binary function based on the stratum denudation thickness and the thickness of the terrain skeleton to analyze an approximate solution, and inverting the stratum paleo-burial depth for the logging paleo-burial depth; obtaining the total porosity of the hydrocarbon source rock according to the stratum paleo-burial depth; quantitatively predicting the single well paleo pressure of the hydrocarbon source rock according to the total porosity; the multi-well paleo pressure is obtained based on the single well paleo pressure, interpolation is performed according to the multi-well paleo pressure to obtain the plane paleo pressure, in this way, the accurate well logging compaction trend line is established, the accuracy and reliability of the prediction result are improved by considering the influence of the shear wave speed, and therefore the accuracy of predicting the paleo pressure of the hydrocarbon source rock in the reservoir forming period is improved.

The embodiment of the invention discloses a mudstone and shale reservoir type identification method and device, equipment and a medium. The method comprises the following steps: acquiring a target proportion of a target pore in a storage space of a test sample; the test sample is made according to a rock sample, the rock sample is obtained from a target stratum, the target stratum is a mudstone or shale reservoir, and the target pores are organic pores, inorganic pores and cracks; determining a target area corresponding to the target proportion of the target pore in a triangular chart; different areas in the triangular chart correspond to different proportions of target pores, and different areas correspond to different reservoir types; and determining the reservoir type corresponding to the target area as the reservoir type of the target stratum. According to the technical scheme, after the reservoir types are quantitatively divided, the reservoir types of the target stratum can be accurately recognized, and guidance and reference are provided for quantitative evaluation, exploration and development of oil and gas reservoirs.

The present application provides a monitoring and early warning method and device for pilot hole construction in soft rock mudstone formations, which relates to the field of mining engineering technology, including: constructing a profile of the mine stratum distribution to determine the pilot hole construction location; conducting pilot hole construction, collecting the borehole backflow status in real time, and performing mud feature analysis and backflow color collection; if the mud feature meets the predetermined mud feature or the backflow image meets the predetermined mudstone color, it is determined that the construction has reached the soft rock mudstone formation, and high-pressure water is injected into the pilot hole to form a cavity; the cavity meets the predetermined size constraint, grouting is injected into the cavity, and after filling, the pilot hole is continuously constructed until the construction is completed. The present application can solve the technical problem in the prior art that the pilot hole construction has safety risks due to the characteristics of the soft rock mudstone formation. By performing high-pressure grouting on the soft rock mudstone formation, problems such as hole blockage and pipe burial can be effectively avoided, thereby reducing the safety risks during the construction process and improving construction efficiency.

The present application relates to the field of slurry shield construction, and particularly to a test device and a test method for simulating slurry shield face disaster in composite stratum, comprising a model box, a shield system, a slurry generating system and a monitoring system; the present application discloses a test device for simulating slurry shield face disaster in composite stratum; the test device disclosed by the present application can be applied to round gravel-mudstone composite stratum; meanwhile, the present application adopts fluctuation type slurry pressure to supply slurry to the slurry bin; the actual working condition of the slurry shield can be better simulated, so that the test device disclosed by the present application can be used to reveal the passive failure mechanism of the round gravel-mudstone composite stratum slurry shield face, and provide technical support for the slurry burst early warning; meanwhile, the test device can provide indoor test ideas for the failure process of the shield face in similar binary composite stratum.

The invention discloses a loess-mudstone landslide sliding grading displacement measurement method and system, and the method comprises the following steps: collecting the multi-point displacement data of a landslide body, and carrying out the preprocessing of the data, and generating a standardized multi-measurement-point displacement data sequence; obtaining overall and local deformation states; extracting evolution trend, space consistency and sliding loss features to form a displacement feature set; inputting an improved continuous time hidden Markov landslide state model, and generating a sliding state evolution sequence; analyzing the evolution sequence to generate a grading judgment result; an included angle threshold method and a shear displacement gradient method are adopted to recognize a concave-convex body and a sliding belt, and a key area identification result is generated; and outputting a sliding grading judgment result, a displacement feature set and a key area identification result. According to the invention, fine grading identification of the landslide state and accurate locking of the key area are realized, and the accuracy and foresight of monitoring and early warning are improved.

The invention relates to a quantitative evaluation method and system for premature senility fracture opening capability, and belongs to the technical field of oil-gas exploration, and the method comprises the steps: obtaining fracture related parameters in a research area; the fracture surface positive pressure in the fracture reservoir forming period is calculated according to the fracture related parameters; calculating the plastic deformation ultimate pressure of the fractured mudstone according to the fracture related parameters; according to the section positive pressure and the mudstone plastic deformation ultimate pressure, the opening capacity index of the fracture reservoir forming period is calculated; and dividing fracture opening capability evaluation grades according to the fracture reservoir forming period opening capability index so as to evaluate the premature senility fracture opening capability. According to the method, by calculating the section positive pressure and the mudstone plastic deformation ultimate pressure, quantitative calculation of the opening capacity index is achieved, the fault conduction opening capacity is converted from traditional experience-dependent interpretation into a computable, sortable and comparable quantitative index, and objectivity and consistency of evaluation results are improved.

The application discloses a sparse well area hydrocarbon source rock TOC prediction method and system, an electronic device and a medium, relates to the technical field of hydrocarbon source rock carbon content prediction, and comprises the following steps: establishing a virtual well in a well-free area; determining the seismic attribute of the virtual well based on a seismic attribute extraction method; determining the lithology of the virtual well based on the seismic attribute of the virtual well and a sandstone and mudstone lithology prediction model, and extracting the mudstone section of the virtual well; determining the longitudinal continuous TOC prediction value of the hydrocarbon source rock in the mudstone section of the virtual well based on a single-well longitudinal continuous TOC prediction model; and combining the longitudinal continuous TOC prediction value and the measured TOC value of the hydrocarbon source rock in the mudstone section of the virtual well to construct a three-dimensional TOC attribute body of the target sparse well area based on a preset geological condition constraint, so as to predict the TOC of the hydrocarbon source rock in the target sparse well area. The application realizes higher-precision quantitative evaluation and prediction of the TOC of the hydrocarbon source rock in the sparse well area.

The invention belongs to the technical field of anti-seepage curtains of red-bed landfills, and discloses an optimal design method for a vertical anti-seepage curtain of an irregular landfill in a red-bed region, which adopts a drilling, geological radar and X-ray diffraction combined technology in the exploration and data acquisition stage to clearly distinguish hydrophilic expansive mudstone and high-permeability sandstone, and the optimal design method for the vertical anti-seepage curtain of the irregular landfill in the red-bed region is provided for the vertical anti-seepage curtain of the irregular landfill in the red-bed region. A space coupling model of the pile body and the red rock stratum is established by means of three-dimensional laser scanning, and the lithologic boundary of the dual seepage system is defined; in the model construction stage, parameter distribution is analyzed through a Markov random field model, regular updating is conducted in combination with a Kalman filtering algorithm, and dynamic changes such as sandstone fracture expansion caused by pile settlement can be adapted; a modified bentonite and nanoscale montmorillonite composite material is used in a sandstone area, construction is conducted through a high-pressure jet grouting technology, the permeability coefficient is set to be that the insertion depth extends to the complete bed rock by 2-2.5 m, and the problem of local leakage caused by the fact that the seepage-proofing design is not matched with the actual conditions of a red layer is solved.

This invention discloses a method and system for predicting reservoir types, comprising: obtaining a cross-interpretation chart of sandstone and mudstone transverse and longitudinal wave impedances based on the lithological distribution information, P-wave impedance curves, and S-wave impedance curves of the target layer in the target well; constructing new elastic impedance curves for distinguishing sandstone and mudstone based on P-wave and S-wave characteristics using principal component analysis based on the sandstone and mudstone transverse and longitudinal wave impedances in the cross-interpretation chart; constructing a new three-dimensional elastic impedance data volume based on the new elastic impedance curves and the three-dimensional inversion data volume of transverse and longitudinal wave impedances; and predicting the reservoir type of the entire well section of the target well based on the new three-dimensional inversion data volume of elastic impedances. This invention can construct elastic impedance attributes more suitable for reservoir identification based on transverse and longitudinal wave impedances, and can realize reservoir interpretation using a single parameter, overcoming the problem of low sandstone identification accuracy under impedance overlap, and improving the accuracy and efficiency of sandstone reservoir identification.

The invention discloses a quantitative evaluation method for the transverse plugging performance of a multilayer sandstone oil reservoir fault. The quantitative evaluation method comprises the steps that a layer surface model and a fault model which can reflect a stratum space framework are established; obtaining a three-dimensional lithofacies model; acquiring the contraposition condition of two sand shale reservoirs of the fault; calculating an improved transverse plugging coefficient; and performing quantitative evaluation on the fault plugging property according to data such as an oil field seismic section and tracer test and comprehensive analysis of a numerical simulation method. According to the method, the multi-layer overlapping effect is considered, the influence of the fault displacement on mudstone smearing continuity and lithologic configuration can be considered, the threshold chart of the fault static transverse connectivity is established, verification is conducted in combination with a numerical simulation method, the fault plugging performance prediction precision can be effectively improved, and the fault plugging performance prediction accuracy is improved. And a reliable basis is provided for further development and adjustment of the multi-layer sandstone reservoir.

The application discloses a drilling cementing wall stabilizing agent and a preparation method and application process thereof, and belongs to the technical field of oil field chemistry, and particularly relates to a preparation of the drilling cementing wall stabilizing agent. The preparation method of the drilling cementing wall stabilizing agent can be that thermoplastic resin, a curing agent and inorganic powder are uniformly mixed and stirred at normal temperature and normal pressure according to proportions. The wall stabilizing agent material has the advantages of simple production process, safety, low material cost and convenience for large-scale production and application. The product can not only plug pores and reduce filtration loss, but also cement sand and mudstone strata and improve stratum pressure-bearing capacity, so that the purpose of stabilizing a well wall is achieved. The application further provides an application process of the drilling cementing wall stabilizing agent, which comprises a suitable drilling fluid system and an adding amount and construction process under different stratum porosities and different working conditions.

The utility model discloses a water-rich-mudstone sand layer-based shield tunnel construction safety monitoring device, which comprises a water-rich sand layer tunnel oxygen monitoring assembly, the oxygen detector body is electrically connected with a gas alarm controller A through a wire, the gas inlet pipe end is communicated with the interior of the oxygen detector body, the alarm lamp is electrically connected with the oxygen detector body, and a fixing rod is arranged on the surface of the top of the oxygen detector body; the outer side of the oxygen detector main body is provided with a design for filtering impurities in external gas and conveniently cleaning blocked impurities, the impurities in oxygen-containing air pass through the first filter screen, the filter gauze element and the outer filter ring, and the oxygen-containing air enters the oxygen detector main body after being filtered, so that the aim of pretreating the impurities in the oxygen-containing air is fulfilled; the oxygen detector body and the filtering treatment cover are of a combined structure, the oxygen detector body can be disassembled and assembled, and impurities filtered out of the filtering treatment cover can be cleaned conveniently.

The invention relates to the technical field of roadbed construction, in particular to a cleaning and finishing method for a red-layer mudstone roadbed bridge abutment transition section base, which comprises the following steps: S1, cleaning the surface of a foundation bed; s2, surveying and setting out; s3, layered excavation is conducted on the transition section, excavation is conducted to the unweathered rock layer face base, and a plurality of steps from the bridge abutment to the foundation bed are formed; s4, step finishing is conducted, specifically, concrete materials are adopted for finishing each step; and S5, performing layered backfilling. The steps are formed through excavation after the surface layer of the foundation bed in the transition section is cleaned, concrete material finishing is conducted on each step, it can be ensured that the structure of the area where each step is located is stable, the bearing capacity meets the design requirement, overall improvement of the stability of a base in the transition section is achieved, meanwhile, the lower steps play a role in stabilizing the upper steps along the slope face of the transition section, and the stability of the base is improved. A stable slope surface is formed in the transition section, landslide settlement is not prone to occurring in the operation period, an abutment is not prone to being affected, the overall stability of a roadbed is ensured, and the settlement occurrence probability is reduced.

The invention discloses a method and equipment for determining the initial reservoir forming depth of shale oil, and the method comprises the steps: obtaining curves of oil-generating pressurization values of mudstone and carbonate rock along with time through an oil-generating pressurization experiment, then carrying out curve conversion, and calculating the initial reservoir forming depth of shale oil by calculating the capillary resistance of the carbonate rock. According to the method, the reservoir forming initial depth of the shale oil is determined according to the superposition curve and the capillary resistance, and due to the fact that the reservoir forming initial depth is determined through the superposition curve and the capillary resistance, the scheme does not need to emphasize on utilization of geological factors and is not affected by other factors, and the finally obtained result is more accurate. Moreover, the method provided by the invention considers the influence of mudstone and carbonate rock on the reservoir forming initial depth of shale oil at the same time, avoids the problem that only conventional oil and gas of single hydrocarbon source rock lithology are aimed in related technologies, and is suitable for determining the reservoir forming initial depth of unconventional oil and gas such as shale oil and the like.

The invention provides a dam material blasting zoning construction method on a mud-containing interlayer material yard, which comprises the following steps of: S1, establishing a material yard three-dimensional geologic model according to early-stage investigation data, simultaneously investigating an erosion area range at the top, marking the erosion area range, and carrying out preliminary plane zoning on each blasting elevation; s2, determining the elevation and range of an unused material mud interlayer according to earlier-stage survey data in combination with secondary supplementary survey, drawing a material field profile map in the elevation direction, and after removing weathered sandstone and the unused material mud interlayer, partitioning a secondary stockpiling area and a main stockpiling area in the step S1 according to the strength degree of a rock stratum in the elevation direction to obtain a stockpiling area and a stockpiling area; and then plane partitioning of the main stockpile and the secondary stockpile is carried out on the plane partitions in the step S1 according to the strength degree of the rock stratum. By implementing refined division measures, accurate classification of material sources of the main stockpile and the secondary stockpile can be achieved, so that mixing of poor materials such as interlayer mudstone can be effectively reduced, the quality stability of dam feeding materials is guaranteed, and the utilization rate of available materials in a stockyard can be remarkably increased.

The invention provides an anti-seepage slope protection material as well as a preparation method and application thereof. The anti-seepage slope protection material comprises a cementing material, an alkali activator and waste rock aggregate, wherein in terms of the total weight of the cementing material being 100%, the cementing material comprises 20%-80% of mudstone powder and 20%-80% of slag powder; the material simultaneously realizes resource utilization of three solid wastes, namely mudstone, slag powder and mining area barren rock, has excellent anti-seepage performance, compressive strength, anti-disturbance capability and durability, and is suitable for anti-seepage water-resisting layers of open pit coal mine dumping sites, tailing dams or industrial solid waste storage yards.

The invention belongs to the technical field of oil-gas exploration and development, and discloses a method for predicting the quantity of oil resources in a thin-well low-exploration basin, which comprises the following steps of: 1, determining a hydrocarbon generation threshold depth and a hydrocarbon generation period of a hydrocarbon source rock stratum section; and 2, recovering the paleostructure of the hydrocarbon generation period, and delineating the area of the mature hydrocarbon source rock on a plane distribution diagram of the paleostructure. And 3, determining a dark mudstone distribution range to obtain an effective hydrocarbon source rock area. And 4, calculating the percentage content of the mudstone. And 5, according to the mudstone percentage content, constructing a mudstone thickness model of the hydrocarbon source rock stratum section. And 6, dividing the mudstone thickness model of the hydrocarbon source rock stratum section in the effective hydrocarbon source rock area into a plurality of units, and calculating the average thickness of each unit. And 7, calculating the petroleum resource quantity of each unit, and accumulating to obtain the basin petroleum resource quantity. Accurate area data and thickness data are provided for predicting the petroleum resource quantity, and the efficiency and accuracy of predicting the petroleum resource quantity are improved through division unit calculation.

The invention discloses a natural potential curve mudstone baseline construction method, relates to the technical field of logging evaluation, and solves the problems of low interpretation precision and low efficiency of an existing natural potential mudstone baseline construction method. The method comprises the following steps: S1, firstly, carrying out one-dimensional continuous wavelet transformation on a natural potential logging curve by taking a Gaussian first-order derivative as a base wavelet by adopting a one-dimensional wavelet continuous transformation algorithm; s2, designing a one-dimensional continuous wavelet transform algorithm; s3, based on the design of a one-dimensional continuous wavelet transform algorithm, identifying the waveform form; and S4, based on the identified waveform form, connecting a mudstone baseline, and constructing a natural potential curve mudstone baseline. According to the natural potential curve mudstone baseline construction method, automatic construction of the natural potential mudstone baseline is achieved, multiple wells can be continuously processed, the method is higher in adaptability and high in interpretation precision, the method can be applied to encryption adjustment well interpretation, and a foundation is laid for reasonable application of the natural potential curve and stratum interpretation.

1. The name of this design product: Shield scraper (including diamond composite sheet). 2. Application of this product design: For tunneling in geological conditions such as hard rock, gravel, and mudstone. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The present application belongs to the technical field of oil exploration, and discloses a method for evaluating the development degree of sand-mudstone reservoir-cap assemblage, which specifically comprises the following steps: conducting regional data analysis for a study area, and mastering the core / cuttings data, logging data and oil testing and production testing data of drilled wells, as well as the seismic data and seismic interpretation horizon data of the whole work area; conducting pre-stack deterministic inversion based on Zeoppritz equation to obtain the data body of the ratio of P-wave velocity to S-wave velocity in the work area; extracting the numerical value of the ratio of P-wave velocity to S-wave velocity along the sandstone layer interpreted by the seismic data to obtain the plan view of the sandstone reservoir; extracting the numerical value of the ratio of P-wave velocity to S-wave velocity along the mudstone layer interpreted by the seismic data to obtain the plan view of the mudstone cap rock; quantifying the relative development degree of the reservoir-cap assemblage by a development degree index calculation formula, constructing the plan view of the development degree index of the sand-mudstone reservoir-cap assemblage, and quantitatively dividing the development degree of the reservoir-cap assemblage. The present application can clearly define the development range of high-quality reservoir-cap assemblage, delineate the favorable exploration area, and further guide the well site deployment of exploration wells.

The invention discloses a dolomitic mudstone reservoir fluid property determination method, device and equipment and a medium, and is applied to the field of exploration. The dolomitic mudstone reservoir fluid property determination method provided by the invention comprises the following steps: performing resistivity detection on a to-be-detected dolomitic mudstone reservoir to obtain a resistivity data set; determining a resistivity abnormal value according to the resistivity data set; determining a resistivity median according to the resistivity data set and the resistivity abnormal value; determining a reservoir space evaluation factor according to the resistivity median and the resistivity characteristic value; and comprehensively analyzing the reservoir space evaluation factor, the resistivity median and the resistivity characteristic value to determine the fluid property of the dolomitic mudstone reservoir to be detected. According to the method, the fluid property of the dolomitic mudstone reservoir to be tested is obtained by comprehensively analyzing and judging three groups of data including the obtained reservoir space evaluation factor, the resistivity median and the resistivity characteristic value, the problem that the fracture-cavity reservoir cannot be accurately evaluated by conventional logging information is solved, and effective and accurate evaluation of the reservoir space is realized.

The application discloses a kind of applied loess-mudstone landslide sliding grading displacement measurement method and system, including the following steps: collecting landslide body multi-point displacement data, pre-processing generates standardization multi-measurement point displacement data sequence;Obtain overall and local deformation state;Extract evolution trend, spatial consistency and sliding loss characteristics, form displacement feature set;Input improved continuous time hidden Markov landslide state model, generate sliding state evolution sequence;Analysis evolution sequence generates grading determination result;Adopt angle threshold method and shear displacement gradient method to identify concave-convex body and sliding zone, generate key area identification result;Output sliding grading determination result, displacement feature set and key area identification result.The application realizes landslide state fine grading identification and key area accurate locking, improves the accuracy and foresight of monitoring and early warning.

The invention belongs to the technical field of drilling and completion fluids, and particularly relates to an environment-friendly drilling fluid suitable for marine mud shale formations and a preparation method and application thereof, the environment-friendly drilling fluid comprises 1.0%-3.0% of an aluminum-based blocking agent, 1.0%-2.0% of an amino inhibitor, 1.0%-3.0% of a polymeric alcohol anti-collapse agent, 0.5%-1.0% of a polyether anti-balling agent, 1.0%-3.0% of a filtrate reducer, 0.5%-1.5% of a tackifier, 1.0%-5.0% of a lubricant, 0.2%-1.5% of a pH regulator, and the balance of water. The drilling fluid system does not contain inorganic salt, sulfonated materials and caustic soda, has the advantages of being environmentally friendly, capable of blocking stratum cracks in a self-adaptive mode, capable of strongly inhibiting clay hydration, good in treating agent compatibility and the like, and is particularly suitable for drilling operation of hard and brittle mud shale stratums, broken mud shale stratums or seriously-slurrying stratums or mudstone and sandstone weakly-cemented stratums and the like.