137 results about "Fault block" patented technology

A system and method of modeling a geological body in a contemporary formation is presented that includes constructing a geological object based on an original depositional paleo-space associated with the contemporary formation, and copying the geological object, transforming the copy of the geological object based on a deformation model of the contemporary formation using acquired data, the transforming allowing modeling of the deformed formation geological body and a lateral extent spanning a plurality of fault blocks.

A method and system for generating a model function h(x,y,z) implicitly representing geologic horizons. Geological data representing a fault network and horizons automatically extracted from seismic data may be received. A 3D mesh may be generated and divided into a plurality of fault blocks by the fault network. A discrete function h(x,y,z) may be defined having values of the geological data representing horizons at discrete nodes of the mesh. Constraints may be installed on the discrete function h(x,y,z) defining surfaces representing horizons. Constraints may be installed on the discrete function h(x,y,z) to ensure the uniqueness of the function h(x,y,z). The discrete function h(x,y,z) may be interpolated at the nodes of the mesh to create a piecewise continuous function h (x,y,z) while honoring the constraints. The piecewise continuous horizon function h(x,y,z) may be synchronized across multiple fault blocks. A model of the piecewise continuous horizon function h(x,y,z) may be displayed.

A method, apparatus and system for Ethernet Ring Protection (ERP) are disclosed. The system includes: a node which detects a link fault blocks the port connected with the faulty link after the link on the ring is faulty, and sends a fault alarm message to adjacent nodes; and the adjacent nodes judge whether the state of the node changes from the normal state to the faulty state according to the received fault alarm message, and clear the forwarding table of the node if such is the case.

The invention relates to the field of oil-gas field exploration and development, in particular to a fractured reservoir permeability tensor and anisotropy quantitative prediction method. On the basis of stress field numerical simulation, a static coordinate system and a dynamic coordinate system are integrated into a geodetic coordinate system by using the current occurrence of fractures, multiple groups of fracture permeability tensor quantitative prediction models are established, quantitative calculation formulas of the permeability principal direction and data are given, and the permeability of fractures in units in different directions is predicted by adjusting the rotation angle of the dynamic coordinate system. The fractured reservoir permeability tensor and anisotropy quantitative prediction method is based on strict mathematical algorithm derivation, a corresponding calculating program can be developed by using computer programming languages, fractured reservoir permeability tensor and anisotropy quantitative prediction is realized, the prediction cost is low, the operability is high, and the prediction result has certain guiding significance on determining the fault block permeability dominant direction, deploying and developing well patterns reasonably, and determining the spatial location relationship between an injection well and a producing well.

It relates to the after potential exploration of an oil filed, with the ability of analyzing the oil distribution, left resource quantity, and so on. It comprises the data inspection device, data preprocessing device, KH value separation device, oil well water absorption preprocessing device, water absorption section separation device, dynamic personnel analysis separation device, small layer weighting separation device, single sand separation result accumulation device, data base, water filling effect, strata HK, and weighting of the oil reserve weighting by the dynamic personnel, determining the strata output through the water absorption section, water content of the strata through well fluid section, with the whole process being computerized and accurate.

The invention belongs to the petroleum exploration field and relates to a seismic recognition method of low-order strike-slip faults in complex structural areas. The seismic recognition method of the low-order strike-slip faults in the complex structural areas includes the following steps that: post-stack seismic data quality is analyzed; processing is carried out to obtain an advantageous frequency division phase band; processing is carried out to obtain Sobel operators in main directions; processing is carried out to Sobel operators in arbitrary directions; a multi-direction lower-order strike-slip fault system is extracted; and the reliability of the low-order strike-slip faults is verified. The method of the invention is suitable for seismic recognition and verification reliability of lower-order strike slip faults in any complex structural belts and can directly reflect the combination modes and spatial locations of lower-order strike-slip faults on a plane; and the method is an effective measure to determine low-order hidden faults in low signal-to-noise ratio and low-frequency seismic data areas and can provide an important basis for re-understanding of hidden fault oil control rules, reservation and production improvement, development plan deployment and adjustment in complex structural oil and gas fields or fault block oil and gas fields.

The invention provides a complicated fault block oil reservoir development well pattern optimizing design method which is based on complicated fault block target area fine geology research and reasonable development layer division. Firstly, structural forms are performed, individual layer blocks are finely classified, the classification is performed according to the oil-bearing area size, then main geologic features and main development characteristics of the similar oil reservoirs are abstracted, and characteristic models of classified and graded complicated fault block oil reservoirs are established. Reasonable well spacing density, injection-production well pattern and injection-production parameter design optimization is carried out through a mathematic and numerical simulation means. Reasonable injection-production well pattern and production parameters of a series of classified and graded complicated fault block oil reservoirs are obtained, and well pattern optimization design of the complicated fault blocks is finished. By adopting the complicated fault block oil reservoir development well pattern optimizing design method, reasonable injection-production well pattern of the complicated fault block oil reservoirs with respective different structural forms in different areas can be quickly confirmed, the reserve utilization and water flooding control degree of the complicated fault block oil reservoirs can be improved, and efficient development of the fault blocks can be achieved.

The invention relates to a fault interpretation processing method by slicing along structural trend surface and belongs to the technical field of seismic data processing. The method is characterized by, according to development characteristics of stratums in different areas, carrying out slice research based on stratum development rules; through carrying out horizon grid interpretation on a target stratum in the seismic data, determining time range of the target stratum to obtain structural trend of the stratum; and carrying out slicing along the structural trend surface of the stratum in the three-dimensional seismic data, and the obtained slice can truly reflect the fault formation shape and trend in the period, so that the purpose of fault interpretation is achieved. The method overcomes the defects that conventional slices cannot truly reflect the fault system distribution along the structure trend, so that the influence of man-made factors on horizon slice result is prevented; minor fault is effectively identified, especially the interlayer minor fault; seismic interpretation is allowed to be more reasonable; reliable basis is provided for fault system combination; minor fault block entrapment is realized precisely; and the method provides basis for the oil field exploration and development and well deployment.

The invention provides a method for subtly depicting broken edges of a thick-layer fault block oil reservoir. The method comprises the steps that subtle stratigraphic correlation is conducted, and the position of a breakpoint encountered during well point drilling is reasonably determined; through fault structure subtle interpretation, the fault form and a plane combination rule are identified and described; well inclination data are corrected so as to ensure the accuracy of the breakpoint encountered during well point drilling and stratified data underground locations; and a three-dimensional geological model serves as the support and platform, fault data of the breakpoint and seismic interpretation of geological research comparison are integrated in the three-dimensional geological model, through well-seismic mutual calibration, well data points are inlayed in a seismic interpretation face, and with the well-seismic-model combination, the broken edge form is subtly depicted. According to the method for subtly depicting the broken edges, on the basis of subtle broken edge depiction, the potential of remaining oil nearby a fault in the later stage of exploitation is successfully dug by using fault-near horizontal well, new exploitation of a thick-layer-near abandoned layer is achieved, and a feasible method is provided for digging the potential of the remaining oil nearby the fault in the later stage of exploitation.

The invention discloses a seismic scattering wave imaging method, overcoming the defects that the traditional reflection wave imaging method has narrow application range and can not process multiple practical geologic structures and terrain imaging and capable of imaging geologic bodies such as a complex fault block, a dike, a lenticulated ore body and the like and enhancing imaging effect. The obtained scattering trace gather is smoother, energy distribution is reasonable, signal to noise ratio is high, migration velocity is easy to obtain, and stepped noise of a converted wave is eliminated. Further, the invention also discloses a seismic scattering wave imaging system on the basis of the seismic scattering wave imaging method, used for seismic scattering wave imaging; and the seismic scattering wave imaging system has the advantages of wide application range, good imaging effect, smooth scattering trace gather and high signal to noise ratio, and the stepped noise of the converted wave can be eliminated aimed at a common scattered point scattering trace gather of the converted wave.

The invention discloses a low order fault interpretation method based on construction mode guidance, belonging to the geophysical exploration technology field. The low order fault interpretation method comprises steps of loading superposed high accuracy three-dimension earthquake data body, well logging data and production data loading, earthquake data analysis and processing, performing three-dimension visualization browsing on the processed earthquake data body to determine the basic tectonic framework of a main fracture system, establishing a low order fault interpretation mode by combining with the local structure stress field according to the combination relation of a main fault and a secondary fault, (5) utilizing technologies like a frequency division coherence cube, a curvature body, rim detection and an ant body to perform identification of a plane and a profile and combination on the low order fault, (6) utilizing production performance to detect the low order fault interpretation result and regulating the fault interpretation mode to obtain a fracture system graph matching with petroleum reservoir exploitation. The invention plays an important role in distribution of the potential of the residual oil of the complicated fault block oil and gas reservoir and has a wide application prospect.

The invention provides a method for screening and evaluating an edge water drive fault block oil reservoir. The method comprises the steps of (1) carrying out fine reservoir description on a candidate fault block oil reservoir and establishing an oil reservoir fine geological model; (2) correcting the oil reservoir fine geological model by carrying out numerical oil reservoir simulation on the basis of the step (1); (3) obtaining an oil reservoir basic geological parameter by utilizing the corrected oil reservoir fine geological model which is obtained in the step (2); (4) analyzing the oil reservoir basic geological parameter which is obtained in the step (3) and comprehensively judging whether the candidate fault block oil reservoir is suitable for the development of an artificial edge water drive or not by referencing a screening and evaluating standard which is suitable for carrying out artificial edge water drive oil reservoir development. According to the method for screening and evaluating the edge water drive fault block oil reservoir, provided by the invention, the problem that the screening and evaluating conditions suitable for carrying out the artificial edge water drive oil reservoir development is indefinite is solved, and the purpose for normalizing and standardizing the screening and evaluating work of the artificial edge water drive oil reservoir is realized.

The invention provides an adaptability quantitative evaluation method for a complex fault block reservoir strong-side simulated water driving technology. The adaptability quantitative evaluation method for the complex fault block reservoir strong-side simulated water driving technology comprises the following steps of 1, carrying out sensitivity research on fault block reservoir strong-side simulated water driving reservoir influencing factors so as to obtain a contribution value of a single factor to the increasing of a recovery ratio; 2, establishing a subordinating degree function of each single factor to the recovery ratio increasing effect of strong-side simulated water driving, bringing each reservoir factor of the fault block into the subordinating degree functions and figuring out the subordinating degrees of the single factors; 3, figuring out an adaptation degree evaluation result of each single factor; and 4, figuring out an adaptability quantitative evaluation result of the fault block strong-side simulated water driving. The adaptability quantitative evaluation method for the complex fault block reservoir strong-side simulated water driving technology provides a set of quantitative calculating method for judging the adaptation degree of the complex fault block reservoir strong-side simulated water driving; and the adaptation degree judgment of a specific block is improved from the traditional adaptation or inadaptation qualitative conclusion to the specific quantitative value.

The embodiment of the invention provides a method of optimizing steam soaking and injection parameters of a complex fault block heavy oil reservoir. The method comprises the following steps of acquiring the oil reservoir pressure and the initial steam injection strength of a target well; and regulating the initial steam injection strength according to the oil reservoir pressure and a corresponding relationship between the preset oil reservoir pressure and the steam injection strength. Compared with the prior art, according to the method provided by the embodiment of the invention, cyclically soaked steam injection quality is configured without depending on the reservoir thickness, but the oil reservoir pressure and the initial steam injection strength of the target well are acquired firstly, and then, the initial steam injection strength is regulated according to the oil reservoir pressure and the corresponding relationship between the preset oil reservoir pressure and the steam injection strength, so that the steam injection strength can well meet the needs of heating heavy oil, and the recovery ratio of the oil reservoir is increased; and in addition, in order to reach better effects, other steam soaking and injection parameters including a steam injection mode, auxiliary steam injection intervention, steam injection dryness and/or a steam soaking and injection cycle can also be selectively optimized according to the practical needs.

The present invention relates to a method for operating a textile machine, the textile machine (1) includes a plurality of work stations (2) maintained by at least a maintenance machine group (5A, 5B, 6A, 6B), which execute at least a maintenance operation at request work stations (2), the at least maintenance operation includes at least a part task, in order to execute at least a maintenance operation, the work station (2) request the maintenance machine group to execute the maintenance operation via a communication system (18, 20) of the textile machine, the reliability of the maintenance operation is tested in order to test function of the maintenance machine group, wherein if fault of the maintenance machine group is determined, information about fault existence is sent to all related stations (2) via the communication system (18, 20) of the textile machine, the fault blocks the execution of the maintenance operation or execution of at least a part task of the maintenance operation.

The invention relates to a rapid three-dimensional horizon interpretation method based on horizontal navigation. The rapid three-dimensional horizon interpretation method based on horizontal navigation includes the following steps that (1), seismic data for horizon interpretation are processed in an interpretative mode, and a seismic data volume highlighting horizon information is obtained; (2), time slices near horizons are extracted, a fault interpretation result is projected to the time slices, and the time slices serve as horizontal navigation slices for horizon interpretation; (3), a horizon interpretation scheme is built; (4), another seismic section which can enter the next fault block without passing through faults is selected according to the horizon interpretation scheme, and horizon interpretation of the seismic section is carried out on the seismic data volume so that the horizon interpretation scheme can be introduced to the next fault block; (5), horizon interpretation of all the seismic sections of the faults within the whole area is finished; (6), the point of intersection between the horizon interpretation and fault interpretation is calculated and projected to a seismic work area base map, plane polygons of the faults on the horizon are compiled one by one, meshing calculation of the interpretation result of the horizons is carried out under the constraint of the plane polygons of the faults, the structural meshed plane of the horizons is obtained, and horizon interpretation is completed; (7), the steps (3)-(6) are carried out repeatedly, and interpretation of the horizons of the whole area is finished.

A method for improving oil recovery by using foam flooding assisting nitrogen soaking in a fault block oil reservoir comprises the steps that a developed reservoir is selected; injection well preformed foam injection is performed; production well nitrogen injection is performed; shut-in well oil-gas gravity differentiation is performed; and a production well is opened for production. By the adoption of the method, the property that the foam blocks the large and does not block small and blocks water and does not block oil is used, that is, the property that under the general condition, the foamhas the tendency to block pore passages with the larger permeability and pore passages with the higher oil saturation in the stratum is used, the swept volume of the foam near an injection well is expanded, and the problem of less movable oil in the late stage of huff and puff of the production well is alleviated to a certain degree. By the adoption of the method, the vertical fluctuation of thenitrogen can be strengthened when the nitrogen is injected into the production well, the longitudinal action radius of the nitrogen huff and puff can be expanded, and meanwhile the problem that the foam flooding is difficult to be effective near the production well is effectively alleviated due to the effect introduction during the huff and puff processes; and the foam flooding assisting can improve the effective cycle of nitrogen huff and puff, the recovery of nitrogen huff and puff is enhanced, and the development of fault block reservoirs is further improved.

The invention relates to a middle-seepage complex fault block oil reservoir water flooding development effect quantitative evaluation method, which belongs to the oil field development and oil reservoir engineering field. According to the invention, on the foundation of selecting the factors influencing the water flooding development effect for middle-seepage complex fault block oil reservoir and according to the influencing degrees of the various factors on the development effect as well as the logic relationships among the various factors, the evaluation factors with relative independence and operability are determined, superposed in quantification and combined to establish an evaluation grade membership matrix capable of quantitatively evaluating the water flooding development effect of the middle-seepage complex fault block oil reservoir and to accomplish the purpose of quantitatively evaluating the water flooding development effect of the middle-seepage complex fault block oil reservoir. The method fully considers the shared influences of all individual factors on the oil reservoir and the obtained unique quantitative evaluation result for the target oil reservoir can reflect the water flooding development effect for the middle-seepage complex fault block oil reservoir scientifically and accurately so as to provide an objective basis for scientific decisions on oil reservoir development and technical support for the effective adjustment of the oil reservoir development scheme.

The invention provides a method for combination exploitation of multiple longitudinal small fault blocks by a multiple-target directional well. The method includes: through accurate geological research and structural interpretation, clearly determining geologic features and structural features of a research area; analyzing planar and longitudinal remaining oil distribution laws of a fault block area layer by layer and block by block, performing potential analysis and well pattern design layer by layer and block by block, and computing controlled reserves and increasing recoverable reserves; adopting a 'three-optimization' design method to design target locations; utilizing seismic section to carry out wellbore trajectory optimization, analyzing reasonability of target optimization scheme design, and performing trajectory optimization design; tracking drilling progress on site, grasping drilling dynamic conditions, and adjusting and controlling a smart well trajectory in time. By the aid of the method for combination exploitation of the multiple longitudinal small fault blocks by the multiple-target directional well, the problem of poor economic benefit of drilling in single longitudinal remaining oil enriched areas of the complicated small fault blocks is solved, and the purpose of benefit exploitation of the complicated small fault blocks by 'series' of the single longitudinal remaining oil enriched areas is achieved.

The invention discloses a fault sealing evaluation method for extracting a static quality coefficient through well logging, and particularly relates to the field of oil and gas resource geological exploration and development evaluation. The evaluation method comprises the following steps: 1, carrying out spectrum attribute, wavelet attribute and integral attribute analysis on conventional loggingdata passing through a fault zone, and carrying out sensitive attribute parameter optimization at the same time; 2, combining the selected fault zone structure logging attribute parameters with parameters capable of representing the fracture development degree, and constructing fault zone structure division parameters; 3, representing a fault plugging correlation coefficient and a fault zone structure division parameter by using logging information of the research block to obtain a static quality coefficient S extracted by logging; and 4, obtaining a standard for judging the fault sealing performance of the research block based on the S coefficient extracted by the logging attribute. According to the method, the influence of the fault internal structure on the fault sealing performance isconsidered, the influence of the fault sealing performance is solved to a certain extent, and the method has practical significance for well logging evaluation reservoir and oil field development of complex fault block oil and gas fields.

The invention provides a method for improving the recovery ratio of a sealed small fault-block oil reservoir through alternate coupling injection and production of an oil-water well. The method for improving the recovery ratio of the sealed small fault-block oil reservoir through alternate coupling injection and production of the oil-water well comprises the following steps of 1, selecting a complicated fault-block oil reservoir subjected to the alternate coupling injection and production; 2, analyzing the development condition of the oil reservoir, and determining the oil-water well capable of being subjected to the alternate coupling injection and production; and 3, the determining the technical policy for implementing the alternate coupling injection and production. The method for improving the recovery ratio of the sealed small fault-block oil reservoir through alternate coupling injection and production of the oil-water well has the advantages that a novel method is provided for improving the development effect of the complicated fault-block oil reservoir and improving the recovery ratio of the oil reservoir; the popularization and application prospects are wide; and obvious economic and social benefits can be obtained.

The invention provides a complex fault block oil reservoir vertical well deviated space homing prediction method comprising the following steps: S1, through fine stratigraphic correlation, reasonably dividing and comparing oil-containing small layers, and reasonably judging the oil-water relationship; S2, performing fine structure interpretation, compiling a top structure map and a fracture system development map, and judging whether there is well deviation in a place with abnormal fault form and structure trend; S3, compiling geological research maps based on the stratigraphic correlation result data and the seismic interpretation result; and S4, putting forward a reasonable vertical well deviated space homing prediction method according to a found drilled vertical well deviation problem. The complex fault block oil reservoir vertical well deviated space homing prediction method is clear in technical idea and simple in application, provides more detailed drilling data for 3D geological modeling, and lays a solid geological foundation for the development of later residual oil distribution research.

The invention discloses an oilfield injection-production parameter optimization and adjustment method based on fault stability evaluation. The method includes the following steps that 1, a fault pressure-bearing limit is predicted; 2, the current balance formation pressure is calculated; 3, the original formation pressure is calculated; 4, the current balance formation pressure is compared with the fault pressure-bearing limit, if the current balance formation pressure is smaller than the fault pressure-bearing limit, a fault is stable, production pressure can be increased properly, and oil well productivity is increased; if the current balance formation pressure is larger than the fault pressure-bearing limit, the fault is in an unstable state, and injection-production parameter adjustment is required to be conducted in fault blocks on the two sides of the fault respectively according to the injection-production parameter optimization and adjustment method in the fault blocks. Based on prediction about the critical pressure required for fault stability maintenance, an oilfield water injection parameter optimization and adjustment method is improved, and the situation that fault activation caused by abnormally high formation pressure gives rise to production safety accidents is avoided.

The invention discloses an adjustment and control injection-production experimental device and method for simulating fault block reservoirs. The adjustment and control injection-production experimental device comprises a sand-packed model, an injection system and a back-pressure system, and further comprises a pressurization system; the pressurization system comprises a special piston-type container and a boundary pressure pump; the special piston-type container comprises a piston cylinder, a piston, an initial end cover and a tail end cover; the piston is mounted in the piston cylinder, and athrough initial end main flow pass is formed in the center of the initial end cover and connected with the boundary pressure pump; a through tail end main flow pass is formed in the center of the tail end cover and connected with a slotted pipeline hole of the sand-packed model, and three or more fluid in-out holes are formed in the axial inner end face of the tail end cover; and oblique fluid channels are further formed in the tail end cover, and the fluid channels and the fluid in-out holes are the same in number and mutually correspond one to one in a matched mode. The actual reservoir characteristics can be reflected better in a test, the defect of constant volume of an existing instrument is overcome, and different boundary and reservoir conditions can be simulated.

The invention provides a method for oil and gas direct identification of a complex small fault block in a first member, comprising the following steps of 1, performing fine structural interpretation, using well-seismic combination, correlation analysis and multiple sets of seismic interactive verification to finely confirm the structure and improve the accuracy of structural interpretation; 2, based on seismic data, establishing six different forward geologic models with the combination of the acoustic data and VSP data of a study area to simulate the seismic response characteristics in different situations with different fault displacements and different upper and lower wall velocity intervals; 3, based on the step 2, summarizing the reflection characteristics and regularities of the oil-bearing blocks on the seismic profile, and conducting the prediction of oil and gas, and establishing the seismic reflection feature to directly discriminate the fault block reservoirs in the first member. The method for oil and gas direct identification of the complex small fault block in the first member is highly reliable, and good in application effect.

The invention provides a method for manufacturing a seismic slice with an overthrust fault, which comprises the following steps of: carrying out explanation on a geologic horizon (with an overthrust fault) and a fault; connecting the geologic horizon with the fault so as to form a new horizon according to the explanation results of the geologic horizon and the fault; carrying out up-and-down horizon connection on the obtained new horizon at the position of the fault so as to form a closed fault block; and according to the formed fault block and the connected horizon, executing an operation ofslicing.