CN108108512B

CN108108512B - Reservoir lithofacies characterization method and device

Info

Publication number: CN108108512B
Application number: CN201711126988.6A
Authority: CN
Inventors: 张克鑫; 张兴; 唐明明; 陈和平; 胡泉; 万学鹏; 卢双舫; 黄文松; 张超前; 林士尧; 张海宽
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2017-11-15
Filing date: 2017-11-15
Publication date: 2021-01-29
Anticipated expiration: 2037-11-15
Also published as: CN108108512A

Abstract

The application provides a reservoir lithofacies characterization method and device. The method comprises the following steps: establishing a configuration unit comparison section and a lithofacies unit comparison section according to the distribution information, the configuration units and the lithofacies units of the wells in the area to be analyzed; constructing a three-dimensional configuration unit comparison profile and a three-dimensional lithofacies unit comparison profile according to the configuration unit comparison profile, the lithofacies unit comparison profile and the coordinate information of each well; picking up a configuration unit boundary control line and a lithofacies unit boundary control line, and establishing a configuration unit interface and a lithofacies unit interface; establishing a three-dimensional configuration unit geological model according to the configuration unit interface and the three-dimensional configuration unit comparison section; and constructing a three-dimensional lithofacies unit geological model according to the lithofacies unit interface and the three-dimensional configuration unit geological model. By utilizing the embodiments in the application, the three-dimensional distribution characteristics of the configuration units and the lithofacies units can be accurately described, and the accuracy of geological structure analysis is improved.

Description

Reservoir lithofacies characterization method and device

Technical Field

The application belongs to the technical field of oil exploration, and particularly relates to a reservoir lithofacies characterization method and device.

Background

When oil and gas exploration is carried out, the geological structure of the area to be developed and the oil and gas storage condition can be analyzed through a geological modeling technology. For example: reservoir geological models and lithofacies geological models which can represent reservoir and oil reservoir modes can be established through the research of geological internal structures, deposition geometric forms and the like. The three-dimensional structure of the sedimentary body of the area to be developed can be analyzed through the reservoir geological model and the lithofacies geological model, and the method has an important effect on determining a reservoir oil and gas development scheme.

In the prior art, a random modeling method is generally adopted for geological modeling, and the data of a sand unit and a mud unit on a well are taken as input, and a kriging method is combined to establish the three-dimensional distribution of the configuration units. However, the core of stochastic modeling methods involves a weighted approach, which will perform weighted estimation from data of neighboring cells, given the range of sandy and argillaceous cells is not given. This has less effect on the thick locations of the argillaceous units and sand, but for the thinner locations, the weight occupied by the thinner locations is smaller because of the smaller thickness, resulting in the random simulation model ignoring the thinner regions, which results in the interruption of the original continuous geologic body. Affecting the accuracy of analysis of subsequent geological structures, oil and gas storage conditions, and oil and gas development schemes. Therefore, there is a need in the art for an implementation scheme that can accurately depict the reservoir structure and improve the accuracy of geological reservoir structure analysis.

Disclosure of Invention

The method and the device for representing the reservoir lithofacies are used for establishing a three-dimensional lithofacies unit geological model by establishing a configuration unit comparison profile and a lithofacies unit comparison profile and combining three-dimensional space position information of the configuration unit and the lithofacies unit and respective boundary control lines. And complicated calculation and weighted estimation are not needed, the occurrence of isolated lithofacies is reduced, and the accuracy of geological reservoir structure analysis is improved.

In one aspect, the present application provides a method for characterizing reservoir lithofacies, comprising:

establishing a configuration unit comparison section by utilizing the configuration unit in the reservoir to be analyzed and the distribution information of the well in the area to be analyzed, and establishing a lithofacies unit comparison section based on the configuration unit comparison section and the lithofacies unit in the reservoir to be analyzed;

acquiring coordinate information of a well in the area to be analyzed, and constructing a three-dimensional configuration unit comparison profile according to the coordinate information and the configuration unit comparison profile;

constructing a three-dimensional lithofacies unit contrast profile according to the three-dimensional configuration unit contrast profile and the lithofacies unit contrast profile;

picking up configuration unit boundary control lines of the configuration units in the three-dimensional configuration unit contrast cross section, and establishing a configuration unit interface;

establishing a three-dimensional configuration unit geological model according to the configuration unit interface and the three-dimensional configuration unit comparison section;

picking up a lithofacies unit boundary control line of the lithofacies unit in the three-dimensional lithofacies unit comparison profile, and establishing a lithofacies unit interface;

constructing a three-dimensional lithofacies unit geological model according to the lithofacies unit interface and the three-dimensional configuration unit geological model;

and representing the lithofacies information of the reservoir to be analyzed by utilizing the three-dimensional lithofacies unit geological model.

Further, in another embodiment of the method, the establishing a configuration unit comparison profile by using the configuration unit in the reservoir to be analyzed and the distribution information of the wells in the region to be analyzed includes:

acquiring well spacing among wells according to the distribution of the wells in the area to be analyzed;

setting the wells in the area to be analyzed in the same plane according to the well spacing;

connecting the same configuration units in adjacent wells to establish the configuration unit contrast profile.

Further, in another embodiment of the method, the establishing a lithofacies unit contrast profile based on the configuration unit contrast profile and lithofacies units in the reservoir to be analyzed includes:

and in the configuration unit comparison section, connecting the interfaces of the same lithofacies units in the same configuration unit in the adjacent well, and establishing the lithofacies unit comparison section.

Further, in another embodiment of the method, the constructing a three-dimensional configuration unit contrast profile from the coordinate information and the configuration unit contrast profile comprises:

dividing the wells corresponding to the profile unit comparison profiles into a specified number of well pairs according to well spacing;

acquiring three-dimensional data of the comparison section of the configuration unit according to the coordinate information of the well-in-well;

and constructing the three-dimensional configuration unit contrast section according to the three-dimensional data of the configuration unit contrast section.

Further, in another embodiment of the method, the constructing a three-dimensional lithofacies unit contrast profile from the three-dimensional configuration unit contrast profile and the lithofacies unit includes:

and on the basis of the three-dimensional configuration unit comparison section, connecting interfaces of the same lithofacies units in the same configuration unit of the adjacent well according to the lithofacies unit comparison section to construct the three-dimensional lithofacies unit comparison section.

Further, in another embodiment of the method, the picking configuration cell boundary control lines of the configuration cells in the three-dimensional configuration cell contrast profile, establishing a configuration cell interface, comprises:

picking up a configuration unit upper boundary control line and a configuration unit lower boundary control line of the configuration unit in the three-dimensional configuration unit contrast cross section;

and respectively establishing an upper boundary configuration unit interface and a lower boundary configuration unit interface by utilizing a cubic interpolation method according to the configuration unit upper boundary control line and the configuration unit lower boundary control line.

Further, in another embodiment of the method, the picking up a lithofacies unit boundary control line of the lithofacies unit in the three-dimensional lithofacies unit contrast profile and establishing a lithofacies unit interface includes:

picking up a lithofacies upper boundary control line and a lithofacies lower boundary control line of the lithofacies unit in the three-dimensional lithofacies unit comparison section;

and respectively establishing an upper boundary lithofacies unit interface and a lower boundary lithofacies unit interface by utilizing a cubic interpolation method according to the lithofacies upper boundary control line and the lithofacies lower boundary control line.

In another aspect, the present application provides a device for characterizing a reservoir lithofacies, comprising:

the two-dimensional profile construction module is used for establishing a configuration unit comparison profile by utilizing the configuration units in the reservoir to be analyzed and the distribution information of the wells in the area to be analyzed, and establishing a lithofacies unit comparison profile based on the configuration unit comparison profile and the lithofacies units in the reservoir to be analyzed;

the three-dimensional configuration construction module is used for acquiring coordinate information of wells in the area to be analyzed and constructing a three-dimensional configuration unit comparison section according to the coordinate information and the configuration unit comparison section;

the three-dimensional lithofacies construction module is used for constructing a three-dimensional lithofacies unit comparison profile according to the three-dimensional configuration unit comparison profile and the lithofacies unit comparison profile;

the configuration interface construction module is used for picking up configuration unit boundary control lines of the configuration units in the three-dimensional configuration unit contrast section and establishing a configuration unit interface;

the configuration model building module is used for building a three-dimensional configuration unit geological model according to the configuration unit interface and the three-dimensional configuration unit comparison section;

the lithofacies interface construction module is used for picking up lithofacies unit boundary control lines of the lithofacies units in the three-dimensional lithofacies unit comparison profile and establishing lithofacies unit interfaces;

the lithofacies model building module is used for building a three-dimensional lithofacies unit geological model according to the lithofacies unit interface and the three-dimensional configuration unit geological model;

and the lithofacies identification module is used for representing the lithofacies information of the reservoir to be analyzed by utilizing the three-dimensional lithofacies unit geological model.

Further, in another embodiment of the apparatus, the two-dimensional profile construction module includes:

the well spacing acquisition module is used for acquiring the well spacing among the wells according to the distribution of the wells in the area to be analyzed;

the plane setting module is used for setting the wells in the area to be analyzed in the same plane according to the well spacing;

and the configuration unit connecting module is used for connecting the same configuration units in the adjacent wells to establish the configuration unit contrast profiles.

Further, in another embodiment of the apparatus, the two-dimensional profile construction module is specifically configured to:

Further, in another embodiment of the apparatus, the three-dimensional configuration building block comprises:

the well pair dividing module is used for dividing the wells corresponding to the configuration unit comparison profiles into a specified number of well pairs according to well spacing;

the three-dimensional data acquisition module is used for acquiring three-dimensional data of the comparison section of the configuration unit according to the coordinate information of the well-in-well;

and the data processing module is used for constructing the three-dimensional configuration unit contrast section according to the three-dimensional data of the configuration unit contrast section.

Further, in another embodiment of the apparatus, the three-dimensional lithofacies construction module is specifically configured to:

Further, in another embodiment of the apparatus, the configuration interface construction module comprises:

a configuration unit control line picking module for picking up configuration unit upper boundary control lines and configuration unit lower boundary control lines of the configuration units in the three-dimensional configuration unit contrast cross section;

and the configuration unit control line processing module is used for respectively establishing an upper boundary configuration unit interface and a lower boundary configuration unit interface by utilizing a cubic interpolation method according to the configuration unit upper boundary control line and the configuration unit lower boundary control line.

Further, in another embodiment of the apparatus, the lithofacies interface construction module includes:

the lithofacies control line picking module is used for picking up lithofacies upper boundary control lines and lithofacies lower boundary control lines of the lithofacies units in the three-dimensional lithofacies unit comparison section;

and the lithofacies control line processing module is used for respectively establishing an upper boundary lithofacies unit interface and a lower boundary lithofacies unit interface by utilizing a cubic interpolation method according to the lithofacies upper boundary control line and the lithofacies lower boundary control line.

In another aspect, the present application further provides a method for processing reservoir deterministic facies modeling, including:

and constructing a three-dimensional lithofacies unit geological model according to the lithofacies unit interface and the three-dimensional configuration unit geological model.

In yet another aspect, the present application further provides a device for characterizing a reservoir lithofacies, comprising: a processor and a memory for storing processor-executable instructions, the processor when executing the instructions implementing one of the reservoir facies characterization methods described above.

According to the reservoir lithofacies characterization method and device, the configuration unit comparison section and the lithofacies unit comparison section are gradually constructed by identifying the configuration unit and the lithofacies unit of the area to be analyzed, combining the distribution condition of the well of the area to be analyzed and utilizing the configuration unit and the distribution of the lithofacies unit between adjacent wells. And by combining the three-dimensional space position information of the configuration unit and the lithofacies unit, the two-dimensional configuration unit contrast profile and the lithofacies unit contrast profile can be converted into a three-dimensional configuration unit contrast profile and a three-dimensional lithofacies unit contrast profile. The distribution characteristics of different configuration units in the area to be analyzed are effectively described, meanwhile, complex weighted estimation is not needed in the construction process of the geological model, the occurrence of isolated lithofacies units at well points is reduced, and the accuracy of establishing the lithofacies geological model is improved. The reservoir structural characteristics of the area to be analyzed are accurately drawn, an accurate data base is provided for the analysis of subsequent geological structures, the analysis of oil and gas storage and the like, and the accuracy of the geological reservoir structural analysis is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.

FIG. 1 is a schematic method flow diagram of one embodiment of a method for characterizing reservoir lithofacies provided herein;

FIG. 2 is a schematic diagram of a cross-sectional structure of a rock phase unit in one embodiment of the present application;

FIG. 3 is a schematic diagram of a cross-sectional structure of a three-dimensional rock phase unit according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a three-dimensional facies unit geological model in one embodiment of the present application;

FIG. 5 is a schematic flow chart of a method for characterizing reservoir lithofacies in another embodiment of the present application;

FIG. 6 is a block diagram representation of one embodiment of a device for characterizing reservoir lithofacies provided herein;

FIG. 7 is a schematic structural diagram of a two-dimensional profile building block of a configuration unit in one embodiment of the present application;

FIG. 8 is a schematic structural diagram of a three-dimensional configuration building block in one embodiment of the present application;

FIG. 9 is a schematic structural diagram of a configuration interface building block in one embodiment of the present application;

FIG. 10 is a schematic diagram of a lithofacies interface construction module in an embodiment of the present application;

FIG. 11 is a block diagram representation of another embodiment of a reservoir facies characterization apparatus provided herein.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

When oil and gas exploration is carried out, the development scheme of the oil and gas can be determined by analyzing geological reservoir configuration and the storage condition of the oil and gas. Generally, geological modeling techniques can be used to create a geological model that characterizes the geology of the area to be analyzed. Geologic modeling may include synthesizing geologic, well logging, geophysical data and various interpretation or conceptual models together to generate a three-dimensional quantitative stochastic model.

In the embodiment of the application, a three-dimensional lithofacies unit geological model is established mainly by using a deterministic modeling method. The three-dimensional lithofacies unit geological model can accurately describe the lithofacies unit distribution characteristics of the area to be analyzed, and provides an accurate data base for the analysis of the subsequent oil and gas storage condition. The deterministic modeling method may refer to a modeling method in which the obtained interpolated and extrapolated estimated values are unique solutions, and may specifically include, for example, a conventional weighted average method, a difference method, a spline function method, a trend surface method, and a popular geostatistical method, i.e., a kriging method. The known control point data basis of the method is combined with the development seismic (three-dimensional seismic, high-resolution seismic, interwell seismic and the like) interpretation result and the data directly acquired along the horizontal well or the logging interpretation result so as to ensure that the obtained estimated value has higher reliability.

The configuration units may include sand dams, sand plateaus and mixed plateaus, and each configuration unit may further include different lithofacies units therein. The lithofacies unit may include: the sand unit (GR (natural gamma) <100) and the mud unit (GR is more than or equal to 100), the sand unit can be further divided into a first-type sand unit (70< GR <100), a second-type sand unit (30< GR < 70) and a third-type sand unit (GR < 30).

In the embodiment of the application, the boundary control line of the lithofacies unit in the configuration unit can be picked up on the basis of the configuration unit geological model by establishing the configuration unit geological model of the area to be analyzed, so that the lithofacies unit geological model is constructed.

Fig. 1 is a schematic flow chart of a method for characterizing a reservoir facies according to an embodiment of the present disclosure, the method for characterizing a reservoir facies according to the present disclosure including:

s1, establishing a configuration unit comparison section by using the configuration units in the reservoir to be analyzed and the distribution information of the wells in the area to be analyzed, and establishing a lithofacies unit comparison section based on the configuration unit comparison section and the lithofacies units in the reservoir to be analyzed.

Specifically, configuration units in a reservoir in the region to be analyzed may be identified based on the core description. The logging curve morphological characteristics of different configuration units can be established by comparing the logging curve with the rock core, the configuration units of all wells in the area to be analyzed can be identified and divided according to the logging curve morphological characteristics, and simultaneously the top and bottom limits of each configuration unit can be determined. The core description may include descriptions of lithology, mineral composition, structural components, biogenic stones, sedimentary formations, attitude, pore fractures, etc. of the core. The core description may be obtained from geological data and the log may be obtained from well log data.

After the configuration units in the area to be analyzed are identified, the configuration units can be further divided into rock phase units such as sandy units and argillaceous units according to the logging curve characteristics such as natural gamma and the like in the configuration units. The well connecting line can be established according to the distribution information of the wells in the area to be analyzed, the configuration units corresponding to the wells in the well connecting line are obtained, the configuration units corresponding to the wells are connected, and the configuration unit comparison section is established.

In one embodiment of the application, m (m is more than or equal to 1) well connecting lines can be established according to the distribution information of the wells in the area to be analyzed. And acquiring the well spacing among the wells, and arranging the wells on the same well connecting line in the same plane according to the actual well spacing. The same configuration units in adjacent wells are connected together to establish a configuration unit contrast profile. For example: the sand plateaus in adjacent wells on the jth well string may be connected together and the mixed plateaus connected together to create a profiled element contrast profile. After the configuration unit comparison section is established, the lithofacies units of adjacent wells can be compared on the basis of the configuration unit comparison section, and the lithofacies unit comparison section is established according to the connection condition of the lithofacies units.

In one embodiment of the application, the interfaces of the same lithofacies units in the same configuration unit in adjacent wells can be connected on the basis of the configuration unit comparison profiles, so that the lithofacies unit comparison profiles are established. For example: the rock facies unit contrast profile can be established by connecting the interfaces of the mud units in the sand plateau configuration units in the adjacent wells together on the basis of the configuration unit contrast profile, connecting the interfaces of the first sand unit, the second sand unit and the third sand unit together.

Fig. 2 is a schematic diagram of a structure of a lithofacies unit comparison section in an embodiment of the present application, and as shown in fig. 2, based on a frame established by a configuration unit comparison section, a lithofacies unit of an adjacent well is compared, and connection conditions of different lithofacies units are judged according to geological knowledge, so as to construct a lithofacies unit comparison section. Different lithofacies units can be seen in the figure such as: two-dimensional distribution conditions among the argillaceous units, the first-class sandy units, the second-class sandy units and the third-class sandy units.

And S2, acquiring coordinate information of the well in the area to be analyzed, and constructing a three-dimensional configuration unit comparison section according to the coordinate information and the configuration unit comparison section.

Specifically, the configuration unit contrast profile and the lithofacies unit contrast profile in the above embodiments are two-dimensional profiles, and cannot characterize three-dimensional spatial features of the configuration unit and the lithofacies unit. In one embodiment of the present application, coordinate information of each well in the area to be analyzed, such as coordinates of an upper end point (Ux, Uy, Uz) and coordinates of a lower end point (Dx, Dy, Dz) of each well, may be obtained. After the coordinate information of each well is obtained, the three-dimensional space position of the configuration unit corresponding to each well can be obtained. The three-dimensional configuration unit contrast section can be constructed by combining the two-dimensional configuration unit contrast section with the three-dimensional space position of the configuration unit.

In an embodiment of the present application, the wells corresponding to the profile of the configuration unit may be divided into a specified number of well pairs according to the well spacing, that is, two adjacent wells may be used as one well pair. According to the coordinate information of the wells in each well pair, the spatial position information of the configuration units corresponding to the well pairs can be obtained, and three-dimensional data of the comparison sections of the configuration units are obtained. According to the three-dimensional data of the configuration unit, the two-dimensional configuration unit contrast profile is converted into the three-dimensional configuration unit contrast profile, so that the configuration characteristics of the area to be analyzed can be more accurately represented. The three-dimensional space distribution characteristics of the configuration units are simply and accurately depicted without complex calculation processes such as weighted estimation and the like, and an accurate data basis is provided for the establishment of a subsequent three-dimensional geological model.

For example: the configuration unit can be compared with A in the section plane₁-A_nj(nj>1) The total nj wells are divided into nj-1 well pairs according to the nearest distance principle, and each well pair comprises 2 wells A_iAnd A_i+1. Wherein A is_iThe upper end point of the well is PU_iCoordinates (Uxi, Uyi, Uzi), the Ai well's lower endpoint Pdi, coordinates (Dxi, Dyi, Dzi); a. the_i+1The upper end point of the well is PU_i+1The coordinate is (Ux)_i+1，Uy_i+1，Uz_i+1)，A_i+1The lower endpoint of the well is PD_i+1The coordinate is (Dx)_i+1，Dy_i+1，Dz_i+1). 4 end points PUi, PDi and PU according to ith well pair_i+1And PD_i+1And establishing a configuration unit of the ith well pair to compare with three-dimensional data such as three-dimensional coordinates. And sequentially establishing three-dimensional data of the configuration units of the other well pairs to obtain the three-dimensional data of the configuration unit comparison section, thereby establishing the three-dimensional configuration unit comparison section.

And S3, constructing a three-dimensional lithofacies unit contrast section according to the three-dimensional configuration unit contrast section and the lithofacies unit contrast section.

Specifically, after the three-dimensional configuration unit comparison section is established, the three-dimensional lithofacies unit comparison section can be further constructed in a refined manner according to three-dimensional space positioning of the lithofacies unit on the basis of the three-dimensional configuration unit comparison section. For example: and superposing three-dimensional space data of the lithofacies units in the configuration units in the three-dimensional configuration unit contrast profile to establish a three-dimensional lithofacies unit contrast profile.

In an embodiment of the application, the three-dimensional lithofacies unit comparison section can be constructed by connecting the interfaces of the same lithofacies units in the same configuration unit of the adjacent well on the basis of the three-dimensional configuration unit comparison section according to the lithofacies unit comparison section. Fig. 3 is a schematic diagram of a three-dimensional lithofacies unit comparison section structure in an embodiment of the present application, and as shown in fig. 3, the three-dimensional lithofacies unit comparison section diagram in the present application reflects a distribution situation of lithofacies in a three-dimensional space, so as to provide an accurate data base for subsequently establishing a lithofacies geological model. And the occurrence of isolated lithofacies in the three-dimensional lithofacies geological model can be reduced without complex calculation and estimation processes. The three-dimensional space distribution characteristics of the lithofacies units are simply and accurately carved, and an accurate data base is provided for the establishment of a subsequent three-dimensional geological model.

And S4, picking up the configuration unit boundary control lines of the configuration units in the three-dimensional configuration unit contrast cross section, and establishing a configuration unit interface.

Specifically, configuration unit boundary control lines of the three-dimensional configuration units and the configuration units in the cross section can be picked up, and configuration unit interfaces are established according to the boundary control lines corresponding to different configuration units. For example: the boundary control lines corresponding to different configuration units can be connected together to construct a configuration unit interface. The three-dimensional lithofacies unit contrast profile is established on the basis of the three-dimensional configuration unit contrast profile, wherein the three-dimensional spatial position characteristics of the configuration units are included. In practical application, the configuration unit control lines of the three-dimensional rock phase unit versus the configuration unit in the cross section can be directly picked up.

In one embodiment of the present application, the top and bottom limits of each configuration element may be determined when identifying configuration elements of the area to be analyzed. And picking up the configuration unit upper boundary control line and the configuration unit lower boundary control line of different configuration units on different well connecting lines in the three-dimensional configuration unit contrast cross section according to the top and bottom boundaries of the configuration units. After configuration unit upper boundary control lines and configuration unit lower boundary control lines of a plurality of configuration units are picked up, an upper boundary configuration unit interface and a lower boundary configuration unit interface can be established by utilizing a cubic interpolation method. Cubic interpolation is a polynomial interpolation, and a method of approximating the minimum point of a search function by the minimum point of a cubic curve one by one. The method can more accurately depict the three-dimensional spatial distribution characteristics of the configuration units, and provides an accurate data base for the establishment of a subsequent three-dimensional geological model.

For example: and determining an upper boundary control line of the kth configuration unit on the jth well connecting line by adopting a three-dimensional picking method according to the top and bottom limits of the three-dimensional configuration unit comparison profile of the jth well connecting line. And sequentially picking up the upper boundary control lines of the kth configuration unit on the rest well connecting lines, and finally obtaining m upper boundary control lines of the kth configuration unit. And obtaining an upper boundary configuration unit interface of the kth configuration unit by adopting a cubic interpolation method according to the upper boundary control lines of the m kth configuration units. In the same way, a lower boundary configuration cell interface of the conceived cell can be constructed. According to the method, the upper boundary configuration unit interface and the lower boundary configuration unit interface corresponding to different configuration units can be constructed.

And S5, establishing a three-dimensional configuration unit geological model according to the configuration unit interface and the three-dimensional configuration unit contrast section.

Specifically, the method of the above embodiment may be used to obtain the configuration unit interface of each configuration unit, and in combination with the established three-dimensional configuration unit contrast profile, the configuration interface of the three-dimensional configuration unit contrast profile may be determined, so as to obtain the three-dimensional configuration unit geological model. Such as: and determining the upper and lower interfaces of each configuration unit in the three-dimensional configuration unit comparison section, and establishing a three-dimensional configuration unit geological model.

And S6, picking up the lithofacies unit boundary control line of the lithofacies unit in the three-dimensional lithofacies unit comparison section, and establishing a lithofacies unit interface.

Specifically, the boundary control lines of the lithofacies units of the three-dimensional lithofacies unit comparison profile can be picked up, and the lithofacies unit interfaces are established according to the boundary control lines corresponding to different lithofacies units. For example: boundary control lines corresponding to different lithofacies units can be connected together to construct a lithofacies unit interface. By utilizing the boundary control line of the lithofacies unit, the structural characteristics of the lithofacies unit can be more accurately described, weighting estimation is not needed, and the occurrence of isolated lithofacies units is reduced.

In one embodiment of the present application, the top and bottom boundaries of each facies unit may be determined when identifying the facies units of the area to be analyzed. And according to the top and bottom boundaries of the lithofacies units, picking up the lithofacies unit upper boundary control line and the lithofacies unit lower boundary control line of different lithofacies units on different well connecting lines in the three-dimensional lithofacies unit comparison profile. After the upper boundary control line and the lower boundary control line of the lithofacies units of the plurality of lithofacies units are picked up, an upper boundary lithofacies unit interface and a lower boundary lithofacies unit interface can be established by utilizing a cubic interpolation method.

For example: and determining each lithofacies upper boundary control line of the kth configuration unit on the jth well connecting line by adopting a three-dimensional pickup method according to the lithofacies unit in the configuration unit of the jth well connecting line compared with the upper boundary control line of each lithofacies in the profile. And sequentially picking up the upper boundary control line of each lithofacies of the kth configuration unit on the rest well connecting lines to obtain the upper boundary control line of the lithofacies in the kth configuration unit of each well connecting line in the area to be analyzed. And obtaining the upper boundary lithofacies unit interface of each lithofacies in the kth configuration unit by adopting a cubic difference method according to the upper boundary control line of the lithofacies in the kth configuration unit of each well connecting line. In the same way, the lower boundary rock-phase unit interface can be constructed. According to the method, the upper boundary lithofacies unit interface and the lower boundary lithofacies unit interface corresponding to different lithofacies units can be constructed.

And S7, constructing a three-dimensional lithofacies unit geological model according to the lithofacies unit interface and the three-dimensional configuration unit geological model.

Specifically, after obtaining the lithofacies unit interface, namely the upper boundary lithofacies unit interface and the lower boundary lithofacies unit interface, the interface of the lithofacies unit in the three-dimensional configuration unit geological model can be determined by combining the established three-dimensional configuration unit geological model, and the three-dimensional lithofacies unit geological model is obtained. Fig. 4 is a schematic structural diagram of a three-dimensional lithofacies unit geological model in an embodiment of the present application, and as shown in fig. 4, the lithofacies distribution of the three-dimensional lithofacies unit geological model constructed in the embodiment of the present application is continuously distributed around a well point, and no isolated lithofacies occurs, which indicates that the lithofacies geological model is accurately established in the present application, and provides an accurate data basis for subsequent geological analysis and oil reservoir condition analysis.

And S8, identifying and obtaining the lithofacies information of the reservoir to be analyzed by using the three-dimensional lithofacies unit geological model.

Specifically, the three-dimensional lithofacies unit geological model can accurately depict lithofacies information of the reservoir to be analyzed, and the lithofacies information inside the reservoir to be analyzed can be identified and obtained by using the three-dimensional lithofacies unit geological model.

It should be noted that, the steps in the foregoing embodiments may not have a certain order, and the order of the specific steps may be adjusted according to actual situations.

Fig. 5 is a schematic flow chart of a method for characterizing a reservoir facies according to another embodiment of the present application, and as shown in fig. 5, the method for characterizing a reservoir facies according to an embodiment of the present application may further adopt the following manner:

t1, identification of configuration elements. For a specific identification method, reference may be made to the above embodiments, which are not described herein again.

T2, subdivision of lithofacies units within the cells. That is, the configuration unit is divided and refined into a plurality of lithofacies units, which may specifically refer to the above embodiments and will not be described herein again.

T3, establishing a configuration unit contrast profile. That is, according to the distribution of the wells in the area to be analyzed, the configuration units corresponding to each well are represented in the same plane, and a configuration unit comparison section is constructed.

And T4, establishing a rock phase unit contrast profile. On the basis of the profile comparison of the configuration units, connecting the lithofacies units corresponding to the same configuration unit in the adjacent wells to construct a lithofacies unit profile comparison.

T5, establishing a three-dimensional configuration unit contrast section. The two-dimensional configuration unit comparison profile is converted into a three-dimensional configuration unit comparison profile by combining the coordinate information of each well in the area to be analyzed, which may be referred to in the above embodiments specifically, and is not described herein again.

And T6, establishing a three-dimensional rock phase unit contrast profile. And on the basis of the three-dimensional configuration unit comparison profile, establishing a three-dimensional lithofacies unit comparison profile by combining the three-dimensional space information of the lithofacies unit. Reference may be made to the above embodiments, which are not described herein again.

T7, establishing a configuration unit interface. And establishing a configuration unit interface according to the top and bottom limits of the configuration unit in the three-dimensional configuration unit contrast cross section. Reference may be made to the above embodiments, which are not described herein again.

And T8, establishing a lithofacies unit interface. And establishing a lithofacies unit interface according to the top and bottom limits of the lithofacies units in the three-dimensional lithofacies unit comparison profile. Reference may be made to the above embodiments, which are not described herein again.

And T9, establishing a three-dimensional configuration unit geological model. And combining the three-dimensional configuration unit contrast section and the configuration unit interface to construct a three-dimensional configuration unit geological model. Reference may be made to the above embodiments, which are not described herein again.

And T10, establishing a three-dimensional lithofacies unit geological model. And combining the three-dimensional configuration unit geological model and the lithofacies unit interface to construct a three-dimensional lithofacies unit geological model. Reference may be made to the above embodiments, which are not described herein again.

T11, identifying lithofacies information of the reservoir. And identifying lithofacies information of the reservoir according to the obtained three-dimensional lithofacies unit geological model.

According to the reservoir lithofacies characterization method, the configuration unit comparison section and the lithofacies unit comparison section are gradually constructed by identifying the configuration unit and the lithofacies unit of the area to be analyzed and combining the distribution condition of the well of the area to be analyzed and utilizing the configuration unit between adjacent wells and the distribution of the lithofacies unit. And by combining the three-dimensional space position information of the configuration unit and the lithofacies unit, the two-dimensional configuration unit contrast profile and the lithofacies unit contrast profile can be converted into a three-dimensional configuration unit contrast profile and a three-dimensional lithofacies unit contrast profile. And then, a three-dimensional lithofacies unit geological model can be constructed by combining the top and bottom boundaries of the configuration unit and the lithofacies unit. The distribution characteristics of different configuration units in the area to be analyzed are effectively described, meanwhile, complex weighted estimation is not needed in the construction process of the geological model, the occurrence of isolated lithofacies units at well points is reduced, and the accuracy of establishing the lithofacies geological model is improved. The reservoir structural characteristics of the area to be analyzed are accurately drawn, an accurate data base is provided for the analysis of subsequent geological structures, the analysis of oil and gas storage and the like, and the accuracy of the geological reservoir structural analysis is improved.

Based on the reservoir lithofacies characterization method, one or more embodiments of the specification further provide a reservoir lithofacies characterization device. The apparatus may include systems (including distributed systems), software (applications), modules, components, servers, clients, etc. that use the methods described in the embodiments of the present specification in conjunction with any necessary apparatus to implement the hardware. Based on the same innovative conception, embodiments of the present specification provide an apparatus as described in the following embodiments. Since the implementation scheme of the apparatus for solving the problem is similar to that of the method, the specific implementation of the apparatus in the embodiment of the present specification may refer to the implementation of the foregoing method, and repeated details are not repeated. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Specifically, fig. 6 is a schematic block structure diagram of an embodiment of a reservoir lithofacies characterization device provided in the present application, and as shown in fig. 6, the reservoir lithofacies characterization device provided in the present application includes a two-dimensional profile construction module 61, a three-dimensional configuration construction module 62, a three-dimensional lithofacies construction module 63, a configuration interface construction module 64, a configuration model construction module 65, a lithofacies interface construction module 66, a lithofacies model construction module 67, and a lithofacies identification module 68.

The two-dimensional profile construction module 61 may be configured to establish a lithofacies unit comparison profile according to the configuration unit comparison profile and the lithofacies unit;

the three-dimensional configuration building module 62 may be configured to build a configuration unit comparison profile by using the configuration units in the reservoir to be analyzed and the distribution information of the wells in the region to be analyzed, and build a lithofacies unit comparison profile based on the configuration unit comparison profile and the lithofacies units in the reservoir to be analyzed;

the three-dimensional lithofacies construction module 63 can be used for constructing a three-dimensional lithofacies unit comparison profile according to the three-dimensional configuration unit comparison profile and the lithofacies unit comparison profile;

a configuration interface construction module 64, configured to pick up configuration unit boundary control lines of the configuration units in the three-dimensional configuration unit contrast profile, and establish a configuration unit interface;

a configuration model building module 65, configured to build a three-dimensional configuration unit geological model according to the configuration unit interface and the three-dimensional configuration unit comparison profile;

the lithofacies interface construction module 66 may be configured to pick up lithofacies unit boundary control lines of the lithofacies units in the three-dimensional lithofacies unit comparison profile, and establish a lithofacies unit interface;

the lithofacies model building module 67 may be configured to build a three-dimensional lithofacies unit geological model according to the lithofacies unit interface and the three-dimensional configuration unit geological model;

and the lithofacies identification module 68 may be configured to identify and obtain lithofacies information of the reservoir to be analyzed by using the three-dimensional lithofacies unit geological model.

The reservoir lithofacies characterization device provided by the application constructs a configuration unit comparison section and a lithofacies unit comparison section by identifying the configuration unit and the lithofacies unit of an area to be analyzed and combining the distribution of wells in the area to be analyzed. And then positioning the configuration units and the lithofacies units in the configuration unit comparison section and the lithofacies unit comparison section in a three-dimensional space, and establishing a three-dimensional configuration unit comparison section and a three-dimensional lithofacies unit comparison section. And on the basis of the three-dimensional configuration unit comparison section and the three-dimensional lithofacies unit comparison section, establishing a three-dimensional lithofacies geological model by picking up a configuration unit control line and a lithofacies unit control line. Spatial distribution characteristics of the configuration units and the lithofacies units are accurately drawn, weighting estimation is not used in the geological model building process, occurrence of isolated lithofacies is reduced, and accurate data bases are provided for subsequent geological structure analysis, oil and gas storage analysis and the like.

Fig. 7 is a schematic structural diagram of a two-dimensional profile building block of a configuration unit in an embodiment of the present application, and as shown in fig. 7, on the basis of the above embodiment, the two-dimensional profile building block 61 includes:

the well spacing acquisition module 71 may be configured to acquire a well spacing between wells according to the distribution of wells in the area to be analyzed;

a plane setting module 72, configured to set the wells in the area to be analyzed in the same plane according to the well spacing;

the configuration unit connection module 73 may be used to connect identical configuration units in adjacent wells, establishing the configuration unit contrasting profiles.

The utility model provides a characterization device of reservoir lithofacies combines the distribution condition of waiting to analyze the interior well of region, sets up each well in the coplanar according to actual well spacing. And further connecting the configuration units corresponding to the wells to construct a two-dimensional configuration unit contrast profile. The two-dimensional distribution condition of the configuration unit is simply and accurately depicted without complex calculation and estimation processes in combination with the actual distribution condition of the well, and an accurate data basis is provided for the establishment of a subsequent three-dimensional geological model.

On the basis of the above embodiment, the lithofacies unit two-dimensional profile construction module is specifically configured to:

According to the reservoir lithofacies characterization device, on the basis of the constructed configuration unit comparison profile, the connection condition of lithofacies units inside the configuration unit is analyzed, and a two-dimensional lithofacies unit comparison profile is constructed. The method has no complex calculation and estimation process, simply and accurately depicts the two-dimensional distribution condition of the lithofacies units, and provides an accurate data base for the establishment of a subsequent three-dimensional geological model.

Fig. 8 is a schematic structural diagram of a three-dimensional configuration building block in an embodiment of the present application, and as shown in fig. 8, on the basis of the above embodiment, the three-dimensional configuration building block 62 includes:

the well pair dividing module 81 may be configured to divide wells corresponding to the configuration unit comparison profiles into a specified number of well pairs according to well spacing;

a three-dimensional data acquisition module 82, configured to acquire three-dimensional data of the profile unit comparison section according to the coordinate information of the well-to-well;

the data processing module 83 may be configured to construct the three-dimensional configuration unit contrast profile according to the three-dimensional data of the configuration unit contrast profile.

According to the reservoir lithofacies characterization device, on the basis of the two-dimensional configuration unit comparison profile, the three-dimensional space position information of the configuration unit corresponding to each well is determined through the coordinate information of the well in the area to be analyzed. And converting the two-dimensional configuration unit contrast section into a three-dimensional configuration unit contrast section by combining the three-dimensional spatial position information of the configuration unit. The three-dimensional space distribution characteristics of the configuration units are simply and accurately depicted without complex calculation and estimation processes, and an accurate data basis is provided for the establishment of a subsequent three-dimensional geological model.

On the basis of the above embodiment, the three-dimensional lithofacies construction module is specifically configured to:

According to the reservoir lithofacies characterization device, the three-dimensional lithofacies unit comparison profile is established by combining the spatial position information of the lithofacies units in each configuration unit on the basis of the three-dimensional configuration unit comparison profile. And the occurrence of isolated lithofacies in the three-dimensional lithofacies geological model can be reduced without complex calculation and estimation processes. The three-dimensional space distribution characteristics of the lithofacies units are simply and accurately carved, and an accurate data base is provided for the establishment of a subsequent three-dimensional geological model.

Fig. 9 is a schematic structural diagram of a configuration interface building block in an embodiment of the present application, and as shown in fig. 9, on the basis of the above embodiment, the configuration interface building block 64 includes:

a configuration unit control line picking module 91, which can be used for picking up configuration unit upper boundary control lines and configuration unit lower boundary control lines of the configuration units in the three-dimensional configuration unit contrast cross section;

the configuration unit control line processing module 92 may be configured to respectively establish an upper boundary configuration unit interface and a lower boundary configuration unit interface by using a cubic interpolation method according to the configuration unit upper boundary control line and the configuration unit lower boundary control line.

According to the reservoir lithofacies characterization device, the configuration unit interfaces of the configuration units are constructed by picking up the boundary control lines of the configuration units. On the basis of comparing the three-dimensional configuration unit with the profile, the three-dimensional space distribution characteristics of the configuration unit can be accurately depicted by combining the configuration unit interface, and an accurate data basis is provided for the establishment of a subsequent three-dimensional geological model.

Fig. 10 is a schematic structural diagram of a lithofacies interface construction module in an embodiment of the present application, and as shown in fig. 10, on the basis of the above embodiment, the lithofacies interface construction module 66 includes:

the lithofacies control line picking module 101 may be configured to pick up a lithofacies upper boundary control line and a lithofacies lower boundary control line of the lithofacies unit in the three-dimensional lithofacies unit comparison profile;

the lithofacies control line processing module 102 may be configured to establish an upper boundary lithofacies unit interface and a lower boundary lithofacies unit interface by using a cubic interpolation method according to the lithofacies upper boundary control line and the lithofacies lower boundary control line.

According to the reservoir lithofacies characterization device, the lithofacies unit interface is constructed by picking up the boundary control line of the lithofacies unit in each configuration unit. And combining the three-dimensional configuration unit geological model and the lithofacies unit interface to construct a three-dimensional lithofacies unit geological model. The three-dimensional distribution characteristics of the lithofacies units can be accurately carved, complex calculation processes such as weighting estimation and the like are not needed in the construction process, and the occurrence of isolated lithofacies is reduced. And an accurate data base is provided for the analysis of subsequent geologic structure characteristics, the analysis of oil and gas storage and the like.

It should be noted that the above-mentioned description of the apparatus according to the method embodiment may also include other embodiments, and specific implementation manners may refer to the description of the related method embodiment, which is not described herein again.

The application also provides a processing method for reservoir deterministic lithofacies modeling, which comprises the following steps:

The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

The method or apparatus for characterizing a reservoir lithofacies provided in the embodiments of the present specification may be implemented in a computer by a processor executing corresponding program instructions, for example, implemented in a PC using a c + + language of a windows operating system, implemented in a linux system, or implemented in an intelligent terminal using android, iOS system programming languages, implemented in processing logic based on a quantum computer, or the like. In another embodiment of the characterization apparatus for reservoir facies provided herein, fig. 11 is a schematic block diagram of another embodiment of the characterization apparatus for reservoir facies provided herein, and as shown in fig. 11, the characterization apparatus for reservoir facies provided herein in another embodiment of the present disclosure may include a processor 111 and a memory 112 for storing executable instructions of the processor, the processor 111 and the memory 112 may be in communication with each other through a bus 113;

the processor 111 is configured to call the program instructions in the memory 112 to execute the methods provided by the above embodiments of the reservoir facies characterization method, including: establishing a configuration unit comparison section by utilizing the configuration unit in the reservoir to be analyzed and the distribution information of the well in the area to be analyzed, and establishing a lithofacies unit comparison section based on the configuration unit comparison section and the lithofacies unit in the reservoir to be analyzed; acquiring coordinate information of a well in the area to be analyzed, and constructing a three-dimensional configuration unit comparison profile according to the coordinate information and the configuration unit comparison profile; constructing a three-dimensional lithofacies unit contrast profile according to the three-dimensional configuration unit contrast profile and the lithofacies unit contrast profile; picking up configuration unit boundary control lines of the configuration units in the three-dimensional configuration unit contrast cross section, and establishing a configuration unit interface; establishing a three-dimensional configuration unit geological model according to the configuration unit interface and the three-dimensional configuration unit comparison section; picking up a lithofacies unit boundary control line of the lithofacies unit in the three-dimensional lithofacies unit comparison profile, and establishing a lithofacies unit interface; and constructing a three-dimensional lithofacies unit geological model according to the lithofacies unit interface and the three-dimensional configuration unit geological model.

It should be noted that the description of the apparatus described above according to the related method embodiment may also include other embodiments, and specific implementation manners may refer to the description of the method embodiment, which is not described in detail herein. The embodiments in the present application are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the hardware + program class embodiment, since it is substantially similar to the method embodiment, the description is simple, and the relevant points can be referred to the partial description of the method embodiment.

The embodiments of this specification are not limited to what must be in compliance with industry communication standards, standard computer data processing and data storage rules, or the description of one or more embodiments of this specification. Certain industry standards, or implementations modified slightly from those described using custom modes or examples, may also achieve the same, equivalent, or similar, or other, contemplated implementations of the above-described examples. The embodiments using the modified or transformed data acquisition, storage, judgment, processing and the like can still fall within the scope of the alternative embodiments of the embodiments in this specification.

In the 90 s of the 20 th century, improvements in a technology could clearly distinguish between improvements in hardware (e.g., improvements in circuit structures such as diodes, transistors, switches, etc.) and improvements in software (improvements in process flow). However, as technology advances, many of today's process flow improvements have been seen as direct improvements in hardware circuit architecture. Designers almost always obtain the corresponding hardware circuit structure by programming an improved method flow into the hardware circuit. Thus, it cannot be said that an improvement in the process flow cannot be realized by hardware physical modules. For example, a Programmable Logic Device (PLD), such as a Field Programmable Gate Array (FPGA), is an integrated circuit whose Logic functions are determined by programming the Device by a user. A digital system is "integrated" on a PLD by the designer's own programming without requiring the chip manufacturer to design and fabricate application-specific integrated circuit chips. Furthermore, nowadays, instead of manually making an Integrated Circuit chip, such Programming is often implemented by "logic compiler" software, which is similar to a software compiler used in program development and writing, but the original code before compiling is also written by a specific Programming Language, which is called Hardware Description Language (HDL), and HDL is not only one but many, such as abel (advanced Boolean Expression Language), ahdl (alternate Hardware Description Language), traffic, pl (core universal Programming Language), HDCal (jhdware Description Language), lang, Lola, HDL, laspam, hardward Description Language (vhr Description Language), vhal (Hardware Description Language), and vhigh-Language, which are currently used in most common. It will also be apparent to those skilled in the art that hardware circuitry that implements the logical method flows can be readily obtained by merely slightly programming the method flows into an integrated circuit using the hardware description languages described above.

The controller may be implemented in any suitable manner, for example, the controller may take the form of, for example, a microprocessor or processor and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an Application Specific Integrated Circuit (ASIC), a programmable logic controller, and an embedded microcontroller, examples of which include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicone Labs C8051F320, the memory controller may also be implemented as part of the control logic for the memory. Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may thus be considered a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a vehicle-mounted human-computer interaction device, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

Although one or more embodiments of the present description provide method operational steps as described in the embodiments or flowcharts, more or fewer operational steps may be included based on conventional or non-inventive approaches. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or end product executes, it may execute sequentially or in parallel (e.g., parallel processors or multi-threaded environments, or even distributed data processing environments) according to the method shown in the embodiment or the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded. The terms first, second, etc. are used to denote names, but not any particular order.

For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, when implementing one or more of the present description, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of multiple sub-modules or sub-units, etc. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage, graphene storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

As will be appreciated by one skilled in the art, one or more embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, one or more embodiments of the present description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, one or more embodiments of the present description may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

One or more embodiments of the present description may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. One or more embodiments of the present specification can also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment. In the description of the specification, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is merely exemplary of one or more embodiments of the present disclosure and is not intended to limit the scope of one or more embodiments of the present disclosure. Various modifications and alterations to one or more embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims.

Claims

1. A method of characterizing a reservoir facies, comprising:

2. The method of characterizing a reservoir lithofacies of claim 1, wherein the establishing a configuration element comparison profile using configuration elements in the reservoir to be analyzed and well distribution information within the region to be analyzed comprises:

3. The method of characterizing reservoir lithofacies of claim 1, wherein the establishing a lithofacies unit comparison profile based on the configuration unit comparison profile and lithofacies units in the reservoir to be analyzed comprises:

4. The method of characterizing a reservoir lithofacies of claim 1, wherein said constructing a three-dimensional configuration unit contrast profile from said coordinate information and said configuration unit contrast profile comprises:

5. The method of characterizing a reservoir facies as claimed in claim 1 wherein said constructing a three-dimensional facies unit contrast profile from said three-dimensional configuration unit contrast profile and said facies units comprises:

6. The method for characterizing reservoir lithofacies as claimed in claim 1, wherein said picking configuration cell boundary control lines of said configuration cells in said three-dimensional configuration cell contrast profile, establishing configuration cell interfaces, comprises:

7. The method for characterizing reservoir lithofacies as claimed in claim 1, wherein said picking said lithofacies cell boundary control lines of said lithofacies cells in said three-dimensional lithofacies cell contrast profile, and establishing lithofacies cell interfaces comprises:

8. A device for characterizing reservoir lithofacies, comprising:

9. The apparatus for characterizing reservoir lithofacies of claim 8, wherein the two-dimensional profile construction module comprises:

10. The apparatus for characterizing reservoir lithofacies of claim 8, wherein the two-dimensional profile construction module is specifically configured to:

11. The apparatus for characterizing reservoir lithofacies of claim 8, wherein the three-dimensional configuration building module comprises:

12. The characterization apparatus of a reservoir facies of claim 8, wherein the three-dimensional facies construction module is specifically configured to:

13. The apparatus for characterizing reservoir lithofacies of claim 8, wherein the configuration interface construction module comprises:

14. The apparatus for characterizing reservoir lithofacies of claim 8, wherein the lithofacies interface construction module comprises:

15. A method of processing reservoir deterministic facies modeling, comprising:

16. An apparatus for characterising reservoir lithofacies, comprising a processor and a memory for storing processor-executable instructions which, when executed by the processor, implement the steps of the method as claimed in any one of claims 1 to 7.