46 results about "Tectonic model" patented technology

The embodiment of the invention provides a method and a device for simulating a tectonic stress field. The method comprises the following steps: utilizing tectonic explaining result information in a target work area to establish a tectonic model; confirming interior physical property parameters by utilizing material attribute information acquired from a rock mechanical test for seismic inversion result data and an objective interval rock sample in the target work area; performing tectonic evolutionary analysis treatment on the tectonic model in combination with geological background information, thereby acquiring bottom margin displacement information; confirming static rock pressure according to objective interval burial depth and logging density curve and confirming an inferior tectonic force in a preset period at a boundary of a target work area on the basis of the geological background information; respectively utilizing the static rock pressure, the inferior tectonic force in the preset period and the bottom margin displacement information as the constraint conditions of the top boundary, the peripheral boundary and the bottom boundary of the tectonic model and performing finite element modeling and calculating treatment in combination with an interior physical property parameter, thereby acquiring the tectonic stress field in the target work area. The technical scheme provided by the embodiment of the invention is utilized to more accurately confirm the tectonic stress field in the work area.

The invention relates to a fault interpretation method for a fault block oil reservoir and a structural trap identification method. The method comprises steps of selecting one structural style to determine a structural model corresponding to the structural style according to the structural style possibly existing in a research area; obtaining original fault interpretation according to the well breakpoint information of the research area; denoising the seismic data information of the research area, and obtaining a corresponding fault description result by using the denoised seismic data information; combining the fault description result with the original fault interpretation to obtain a new fault interpretation, judging whether the new fault interpretation conforms to the structural modelor not, if yes, taking the new fault interpretation as a final fault interpretation; otherwise, re-selecting a construction style to determine the model till the new fault interpretation conforms to the construction model. The method is advantaged in that multiplicity and uncertainty caused by structural interpretation purely depending on seismic data are avoided, and accuracy of fault interpretation is improved.

The invention proposes a method for constructing a three-dimensional conceptual model of traps and reservoirs, constructing fault lines, assigning elevation values ​​to fault lines, and using fault lines to create fault planes, converting fault planes into faults in corresponding models; creating fault-free According to the fault throws of different faults, the corresponding structural planes are constructed. According to the faults, the structural planes are divided into the structural planes of each fault block. The sandstone top surfaces of different fault blocks are combined into one structural plane. Layer top structural map; set sandstone pinch-out area, construct sandstone isopach map, use sandstone top surface and sandstone isopach map to construct sandstone bottom structural surface; use caprock top surface, sandstone top surface and sandstone bottom surface to construct three-dimensional trap structure The three-dimensional lithological attributes are constructed in the model; on the basis of the three-dimensional trap structure model, the oil-water interface is set, and the corresponding lithological attributes and fluid attributes are created. The above method can quickly and accurately establish three-dimensional trap and reservoir models.

The invention relates to a depicting method for constraining a small-scale drilling sedimentary microfacies by using large-scale seismic data. The depicting method comprises the following steps: 1, establishing a construction model of a work area; 2, resampling seismic data into a structural model, and establishing a grid model of the seismic data; 3, acquiring seismic data of each small layer according to a network model; 4, establishing a fitting function model according to the seismic data of each small layer; 5, thinning the seismic attribute points; and 6, according to the step 4 and thestep 5, carrying out fine depiction of the sedimentary microfacies. According to the method, the large-scale seismic data is small-scale and is enabled to be in one-to-one correspondence with small-scale drilling wells in the longitudinal direction, the distribution of the sedimentary microfacies is truly described by using the seismic data, and the description precision of the sedimentary microfacies is greatly improved. By application of the method, mutual combination of well earthquakes under the same scale is realized, and earthquake quantitative constraint geology is truly realized.

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

The invention relates to the technical field of fault block oil and gas field exploration and development, in particular to a complex fault block structure modeling method. The method includes the establishment of velocity model and timely depth conversion; fine characterization of faults in complex occurrence and shape; determining the intersection and truncation relationship between two adjacent faults; Intersection relationship processing between faults and layers; fine adjustment of well-seismic combined structural horizons; processing of complex fault intersection relationships; superimposition and inversion processing; establishment of oil layer group-level structural model; Consistent treatment of inheritance relationship; establishment of unit-level structural models according to oil reservoir groups, and establishment of overall structural models by using the simulation results as constraints. The modeling method provided by the present invention utilizes wells to control the exact positions of faults and structures, utilizes earthquakes to determine the structure form and trend, and reasonably coordinates the relationship among wells, faults and structural layers.

The invention discloses a fusion geological structure modeling method based on semantic description. In order to solve the problem of lack of geological meaning in the traditional three-dimensional geological structure modeling process, the invention proposes a semantic description of the structure model, which is obtained by geological workers according to the interpretation data A preliminary semantic description, interpreting the data as the basic semantics as a constraint to generate a preliminary structural model; then proposes an extraction algorithm for the semantic network of the corresponding structural model, and with the assistance of the preliminary model, the semantics are edited by geologists to extract more Meticulous semantic description, the extracted semantic description constrains the structural topology of the model in the next traversal; through cyclic traversal until the complete structural framework model is obtained; finally, a fusion geological structure modeling method based on semantic description is proposed, according to the complete structural framework model Restructure the surface.

The invention provides a three-dimensional flow unit model establishment method, device and equipment, and the method comprises the steps: obtaining the logging information of a target well; dividinga target horizon into a plurality of layers according to the logging information, and obtaining layered data; calculating a flow band index of each layer in the plurality of layers according to the porosity data and the permeability data of each layer in the plurality of layers; establishing a three-dimensional construction model; establishing a three-dimensional sedimentary facies model based onthe three-dimensional construction model; And based on the three-dimensional sedimentary facies model, performing phase control attribute modeling by taking the flow band index of each layer in the plurality of layers as an attribute, and establishing a three-dimensional flow unit model. In the embodiment of the invention, phase control modeling is carried out by taking the flow zone index as an attribute, so that the distribution condition of flow units in each layer can be directly embodied in the three-dimensional flow unit model, thereby more effectively carrying out injection-production well group selection and well pattern well distance adjustment, and further effectively improving the oil field production efficiency and yield.

The invention provides a high-precision tectonic stress field simulation method applicable to turbidite sand low-permeability reservoirs and belongs to the field of tectonic stress field simulation technologies. The high-precision tectonic stress field simulation method aims at solving the problems that the high-precision simulation can not be carried out on the turbidite sand low-permeability reservoirs to direct well network deployment in the oilfield development process and improve the development effect of the low-permeability reservoirs through an existing tectonic stress field simulation method. The method includes the first step of establishing a turbidite sand reservoir tectonic model and a turbidite sand reservoir interval velocity model in a PETREL system, the second step of obtaining a three-dimensional rock mechanics parameter model through calculation on the turbidite sand reservoir interval velocity model, the third step of converting the turbidite sand reservoir tectonic model in the PETREL system to a turbidite sand reservoir geometric model in an ANSYS system, the fourth step of carrying out independent mesh subdivision on a stratum and a geologic fault; the fifth step of loading rock mechanics parameters through a range scanning mode, and the sixth step of carrying out simulation on a tectonic stress field to obtain stress distribution states of any point in the turbidite sand low-permeability reservoirs. The method is used for simulating the tectonic stress field in the turbidite sand low-permeability reservoirs.

The invention provides an analysis method of a geological tectonic evolution and deformation process. The method of the invention includes the following steps that: the current formation information and geological characteristics of a target area are acquired; a tectonic evolution process and historical formation information are obtained through inversion according to the current formation information and geological characteristics; an initial discrete element model is generated according to the historical formation information of the target area, wherein the initial discrete element model is composed of randomly-generated particles of different radiuses; tectonic deformation is performed on the initial discrete element model according to the tectonic evolution process, so that a tectonic model can be obtained; whether the geological characteristics of the tectonic model and the geological characteristics of the current formation information satisfy preset similarity is judged; and if the geological characteristics of the tectonic model and the geological characteristics of the current formation information do not satisfy the preset similarity, the material parameters of the particles of various historical formations in the initial discrete element model are adjusted, tectonic deformation is performed on the parameter-adjusted initial discrete element model until the geological characteristics of a tectonic model which is obtained through the deformation of the parameter-adjusted initial discrete element model and the geological characteristics of the current formation information satisfy the preset similarity.