CN113281820A - Forecasting method for unconventional oil and gas favorable exploration area of mountain and west group tidal flat sedimentary system with down-depression of perioral cavity and peripheral area - Google Patents
Forecasting method for unconventional oil and gas favorable exploration area of mountain and west group tidal flat sedimentary system with down-depression of perioral cavity and peripheral area Download PDFInfo
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Abstract
The invention discloses a method for predicting an unconventional oil and gas favorable exploration area of a mountainous and western group tidal flat sedimentary system with down depression of a perioral cavity and a peripheral area. The method provided by the invention comprises the following steps: identifying a deposition system and at least one key interface of the deposition system by utilizing basic data corresponding to the research area, wherein the key interface comprises a sequence interface and/or a maximum flooding surface; identifying at least one reverse fault and a reverse fault footwall stratum corresponding to at least one key interface through basic data and structure identification technology; and carrying out stratum comparison on the reverse fault footwall stratum and the three-level sequence corresponding to the adjacent drilling well, and determining the development condition of the reverse fault footwall in-situ deposition system, thereby obtaining the favorable oil and gas exploration layer system in the research area. The invention uses the structure recognition technology to carry out in-situ deposition system recognition, which is beneficial to the excavation of oil gas.
Description
Technical Field
The invention relates to the technical field of oil and gas exploration, in particular to a method for predicting an unconventional oil and gas favorable exploration area of a mountainous and western group tidal flat sedimentary system with a down-depression perioral cavity and a peripheral area.
Background
The depression of the periapical fossa is positioned in the middle of the southern China-North basin of the southeast of the northern China plate (ground platform), belongs to a first-level structural unit and has the area of about 32600km2. The research area is located in the east part with downward depression, the area starts to be put into exploration work in 1951, according to incomplete statistics, 22 existing drilled wells in the research area and a total footage of 71749m, wherein 6 wells reveal the more comprehensive upper ancient world, and 13 wells see oil and gas displays in the new world, the middle world and the ancient world, and reveal the oil and gas exploration potential of the oil and gas exploration area. By analyzing the existing well drilling, well logging and seismic data, the stratum of the Shanxi group in the research area is considered to be widely developed, the darkshale and coal bed in the Shanxi group are relatively developed (0-15 m) and the gas logging is good, the organic carbon content of the darkshale is 0.17-5.24 percent, the average value is 1.10 percent, the organic carbon content of the coal bed is 46.7-69.1 percent, and the average value is 52.5 percent, so that the method is a favorable exploration layer system.
Predecessors discuss the evolution characteristics, sedimentary facies characteristics, sedimentary patterns, reservoir beds, hydrocarbon sources and the like of the biogenic structure in the south region with down depression of the perioral cavity, however, the structure of the region is complex, and many predecessors study more than ancient biogenic boundaries, a carboniferous-bifilary system, a carboniferous system or a bifilary system as a whole to carry out sedimentary feature study, and the exploration requirements cannot be met.
However, due to the lack of depression around the periphery, the stratigraphic unit (group and segment) is subjected to stratigraphic framework division and the sedimentary feature research work in the stratigraphic framework is performed, so that the spatial distribution feature of the sedimentary system in the research area is not clear. In addition, the research area is complex in structure, and the burial mode and the formation mode consisting of the hydrocarbon generation history and the hydrocarbon discharge history cannot be determined. The method has the problem that in areas with good protogenic stratum development of a sedimentary system, strong tectonic movement is suffered in the later period, and the previously sedimentary favorable exploration layer series is damaged, so that the optimal work of a favorable exploration area in the field of oil and gas exploration in a research area is restricted.
Disclosure of Invention
Based on the problems, the invention divides the deposition system of the research area to construct the sequence stratigraphic framework, and judges the in-situ somatic development area according to the structure recognition technology. And recovering the deposition mode of the research area according to the found longitudinal evolution characteristic and transverse spread characteristic of the deposition system, the space-time distribution and the main control factors thereof. Checking the deposition environment to judge whether the deposition environment is accurate or not according to the ancient biological identification technology; and judging whether the stratum favorable to the facies zone original body has the development potential of the oil and gas reservoir according to the reservoir forming simulation technology. The present invention has been completed by combining the above 4 techniques.
In order to achieve the above object, in one aspect, the present invention provides a method for predicting an unconventional oil and gas favorable exploration area of a down-depression and mountainous and western group tidal level sedimentary system of a peripheral region, comprising:
identifying a deposition system corresponding to the research area and at least one key interface of the deposition system by using basic data corresponding to the research area, wherein the key interface comprises a sequence interface and/or a maximum flooding surface;
identifying at least one reverse fault and a reverse fault footwall stratum corresponding to at least one key interface through basic data and structure identification technology; and
and carrying out stratum comparison on the reverse fault footwall stratum and the three-level sequence corresponding to the adjacent drilling well, and determining the development condition of the reverse fault footwall in-situ deposition system, thereby obtaining the favorable oil and gas exploration layer system in the research area.
In another aspect, the invention provides a device for predicting unconventional oil and gas favorable exploration areas of a down-depression and mountainous and western group tidal flat sedimentary system of a peripheral region, comprising:
the first identification module is used for identifying a deposition system corresponding to a research area and at least one key interface of the deposition system by utilizing basic data corresponding to the research area, wherein the key interface comprises a sequence interface and/or a maximum flooding surface;
the second identification module identifies at least one reverse fault and a reverse fault footwall stratum corresponding to at least one key interface through basic data and structure identification technology; and
and the determining exploration module is used for carrying out stratum comparison on the reverse fault footwall stratum and the three-level sequence corresponding to the adjacent drilling well, and determining the development condition of the reverse fault footwall in-situ deposition system, so that the favorable oil and gas exploration layer system in the research area is obtained.
In another aspect, the present invention provides a computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method for predicting an unconventional oil and gas favorable exploration area of a perioral depression and a peri-mountain switchyard deposit as described above.
In another aspect, the present invention provides an electronic device, comprising: at least one processor and a readable storage medium;
the readable storage medium stores computer-executable instructions;
the at least one processor executes computer-executable instructions stored on the readable storage medium to cause the electronic device to perform the non-conventional oil and gas favorable exploration area prediction method for the intervascular depression and the coastal group tidal level sedimentary system of the peripheral region as described above.
The method, the device, the storage medium and the electronic equipment for predicting the unconventional oil and gas favorable exploration area of the mountainous and western group tidal flat sedimentary system with the depressed periphery and the surrounding areas have the advantages that:
(1) in the invention, the sequence stratum framework division is carried out on a certain stratum unit (group and segment) and the sedimentary characteristics in the sequence stratum framework are researched, so that the method accords with objective geological conditions and sedimentary laws, can finely depict the spatial distribution of a sedimentary system, is convenient for identifying the sedimentary system and is beneficial to the excavation of oil gas;
(2) in the invention, ancient organism identification is carried out on a certain stratigraphic unit (group and section), and the identification of a deposition system is mutually promoted, so that the identification accuracy of the deposition system is further improved;
(3) in the invention, the in-situ deposition system is identified by using a structure identification technology, which is beneficial to the excavation of oil gas;
(4) in the invention, a reservoir-forming mode research technology is used, which is beneficial to determining the oil-gas generation potential of an in-situ deposition system and promoting the excavation of oil gas;
(5) the method does not depend on the subjective judgment of exploration workers any more, avoids introducing excessive subjective factors influencing the exploration result, has high resolution, reliability, stability and ideal effect, and further improves the success rate of oil-gas exploration;
(6) the invention provides reliable information for oil-gas exploration and development, thereby reducing the risk cost of oil-gas exploration and development and improving the efficiency of oil-gas exploration and development.
Drawings
FIG. 1 is a schematic flow chart of a method for predicting unconventional oil and gas favorable exploration areas of a down-depression perioral cavity and a mountainous and western group tidal flat sedimentary system in a peripheral region according to the embodiment of the invention;
FIG. 2 is a schematic diagram of the internal features of a sequence in an embodiment of the present invention;
the reference numbers in fig. 2 are as follows: 1-fine sandstone; 2-medium sandstone; 3-siltstone; 4-silty mudstone; 5-mudstone; 6-carbonaceous mudstone; 7-limestone; 8-coal bed; 9-diabase; 10-sequence boundaries; 11-maximal flooding; 12-mudstone width; 13-silty mudstone width; 14-siltstone width; 15-sandstone width; 16-width of limestone; 17-sandlevel; 18-mud plateau; 19-mixed plateau; 20-grey terrace; 21-a coal-based layer system; 22-igneous rock invasion zone;
FIG. 3 is a schematic diagram of an apparatus for predicting a hydrocarbon exploration layer system according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a hidden mode in an embodiment of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Fig. 1 is a flowchart of a method for predicting an unconventional oil and gas favorable exploration area of a down-depression and mountainous-western group tidal flat sedimentary system in a peripheral region, which may be applied to a terminal or a server capable of data processing, such as a cloud or a local exploration server, and is mainly used for predicting a favorable exploration area in a selected research area.
Specifically, the method in this embodiment mainly includes step S101. The method mainly comprises the following steps:
and identifying a deposition system corresponding to the research area and at least one key interface of the deposition system by using the basic data corresponding to the research area, wherein the key interface comprises a sequence interface and/or a maximum flooding surface.
Wherein the basic data includes at least one of core data, drilling data, logging coring data, paleobiological data and slice data.
In some embodiments, the server may obtain the underlying material in any manner. For example, a user may import the basic material directly, and a server may receive it; also, for example, electronic devices other than a server may send the underlying material to the server, which may receive it.
In the prior art, a key interface is the basis for dividing the sequence, and the change of the key interface can be reflected by the lithology characteristics and the change of a logging curve. Lithology characteristics and well log changes in form, amplitude, and composition may reflect changes in depositional environments, which may reflect changes in sea level to divide the sequence. In the invention, the identification of the three-level sequence interface is mainly based on the transition surface from the accumulation type to the accumulation type, the transition surface from the shallow to the deep of the deposition phase sequence, the obvious change band of the biological group species, the ecology, the abundance and the diversity degree thereof and the transition band of partial geochemical indexes.
The key interfaces identified by the invention comprise sequence interfaces and/or maximum flooding surfaces, wherein the sequence interfaces can comprise at least one of lithologic mutational surfaces, quasi-sequence stacking mode transition interfaces, conversion surfaces from deep to shallow and maximum flooding surfaces.
Illustratively, the lithologic abrupt surface may be an interface corresponding to a change of carbonate rock into mudstone or sandstone.
Illustratively, the quasi-sequential stacking manner transition interface may be a transition surface from an in-volume type to an out-volume type. It can be obtained by the following method: (1) identifying the logging form according to logging curve data, wherein a convolution with the resistivity value becoming larger from bottom to top is a convolution with advance, and a convolution with the resistivity value becoming smaller from bottom to top is a convolution with retreat; (2) the transition from at least one run-in to run-out transition is identified as a quasi-layer-sequential stack-up transition interface.
Illustratively, the transition surface from deep to shallow to deep, i.e. the transition surface from deep water deposition micro-phase to shallow water deposition micro-phase is the deposition phase sequence from deep to shallow, and the transition surface from shallow water deposition micro-phase to deep water deposition micro-phase is the corresponding transition surface from shallow to deep deposition phase sequence.
Illustratively, the maximum flooding surface may be a transition surface from shallow to deep to shallow in dephasing order.
In one embodiment of the present invention, the process of identifying the deposition system corresponding to the research area by using the basic data corresponding to the research area includes:
dividing a deposition system according to a key interface to obtain a key system domain of the deposition system, wherein the key system domain comprises a marine invasion system domain and/or a high-level system domain;
wherein the sea invasion system domain: sea level is formed from a relatively low position to a maximum period, and is characterized by a transition of sedimentary microfacies from a shallow water phase to a deep water phase. The sedimentary phase sequence from shallow water sedimentary microfacies to deep water sedimentary microfacies is from shallow to deep, namely the mud plateau-mixed plateau-sand plateau from shallow to deep is the sea invasion system domain. High-order system domain: sea level is formed from a relatively high location down to a low period of time, characterized by a transition of sedimentary microphases from deep to shallow water phases. The sedimentary phase sequence from deep water sedimentary microfacies to shallow water sedimentary microfacies is from deep to shallow, namely the sedimentary phase sequence from deep to shallow is a sand plateau-mixed plateau-mud plateau as a high-level system region.
And (2) obtaining at least one tertiary sequence according to the key interface and the key system domain.
FIG. 2 is a schematic diagram of the internal features of the sequence exemplified by the north-south basin perioral depression and the adjacent region low-exploration degree basin mountains and west groups. The invention is not limited to this particular embodiment.
As can be seen from fig. 2, SOs1 is SBs + high-order domain (HSTs1) + maximum flooding domain (mfss1) + sea-invasion domain (TSTs1) + SBs 1;
SOs2, second three-level sequence of shanxi group SBs1+ high-level domain (HSTs2) + max flooding domain (mfss2) + sea invasion domain (TSTs2) + SBs 2;
SOs3, second three-level sequence of shanxi group, SBs2+ high-level domain (HSTs3) + max flooding domain (mfss3) + marine invasion domain (TSTs3) + SBx;
the order of deposition was SOs1+ SOs2+ SOs3, with 1 deposited first and 3 deposited last.
It is worth noting that the well logging curve is a curve formed in well logging, and the well logging curve can reflect different lithology and horizon characteristics, and further judge specific lithology, horizon and the like according to the obtained curve.
Thus, in one embodiment of the invention, the depositional system for the area of interest is selected by recovering the depositional pattern of the at least one tertiary sequence from the base data and the log of the at least one tertiary sequence to determine the development of the depositional system in the area of interest.
Preferably, the restoring of the deposition pattern of the at least one tertiary sequence comprises in particular the following steps:
(1) obtaining lithology characteristics and logging response characteristics of the corresponding key system domain by using the basic data and the logging curve of the key system domain;
preferably, the lithology-color-structure observation of the key system domain is carried out by utilizing the logging coring data, and the type of the lithology is determined.
Preferably, the log response is characterized by analyzing the amplitude (difference between high and low values between two adjacent data points, large difference evidencing large amplitude, small difference evidencing small amplitude) of the data of the log, as well as the morphology. Well log configurations include bell, box, finger and tooth.
Correspondingly, each tertiary sequence corresponds to a corresponding key system domain, logging curve testing is carried out on the corresponding key system domain, different rocks have certain physical property difference, different change characteristics are displayed on the logging curves, and different geology can be identified by using the characteristics and the change rule displayed by the various logging curves.
(2) And determining the longitudinal evolution characteristic and the transverse spread characteristic of at least one tertiary sequence according to the lithological characteristic and the logging response characteristic of the key system domain.
Preferably, at least one third-level sequence is sequentially subjected to lithology identification, well logging feature identification, sea invasion system domain identification, high-level system domain identification and third-level sequence identification, and finally the longitudinal evolution feature is obtained.
Preferably, the longitudinal evolution characteristics (lithology characteristics and logging response characteristics) of at least one tertiary sequence are transversely compared to obtain corresponding transverse spread characteristics. Specifically, identifying a longitudinally evolving characteristic of at least one tertiary sequence; and then identifying the adjacent well drilling or field outcrop lithology characteristics and the parts with the logging response characteristics consistent with the longitudinal characteristics of the three-level sequence to be identified, and carrying out transverse comparison on the stratum.
(3) And restoring the deposition mode of the at least one tertiary sequence according to the longitudinal evolution characteristic and the transverse spread characteristic of the at least one tertiary sequence.
Specifically, a planar spreading characteristic and a three-dimensional spreading characteristic are sequentially constructed by using the respectively identified longitudinal evolution characteristic and the transverse spreading characteristic, and finally, a deposition mode is obtained.
In one example of the present invention, the method comprises the following steps:
(1) selecting at least M sample point locations (M drilling wells), wherein each point location develops at least one same tertiary sequence, and identifying at least one longitudinal evolution characteristic of the tertiary sequence;
(2) connecting at least M sample point positions from the west to the east and from the north to the south respectively to finally form 2 sections, wherein the section points are intersected at one point in a spatial position;
(3) determining east-west south-north boundaries of the three-level sequence on the plane according to the range of the three-level sequence on the 2 sections, wherein the east-south-north boundaries comprise the boundary of a top sequence interface, the boundary of a middle flooding surface and the boundary of a bottom sequence interface;
(4) placing the boundary distribution diagram of the top sequence interface of the third-level sequence, the boundary distribution diagram of the flooding surface interface of the third-level sequence and the boundary distribution diagram of the bottom sequence interface of the third-level sequence in equal proportion from top to bottom, and connecting the upper boundary and the lower boundary of the boundary to obtain a three-dimensional spread characteristic;
(5) and (4) identifying land and sea on the three-dimensional spread characteristic diagram, namely completing the restoration of the sedimentary mode.
It is noted that the value of M is not particularly limited in this step and may be determined by one skilled in the art based on the actual conditions of the formation in the area of interest.
Specifically, the restoring the deposition pattern of the at least one tertiary sequence may further include:
firstly, obtaining lithology characteristics and logging curve characteristics of a corresponding key interface by using basic data and a logging curve of the key interface;
and secondly, determining the transverse spreading characteristics of the key interface according to the lithology characteristics and the well logging curve characteristics of the key interface.
In the invention, the lithology and the well logging curve characteristics of the key interface are researched, namely the distribution characteristics of the deposition system of each interface of each three-level sequence are researched, so that the transverse distribution characteristics of the deposition system of each three-level sequence can be further optimized.
In the first embodiment shown in fig. 1, a stratigraphic framework of a certain stratigraphic unit (group, segment) is divided, and the sedimentary characteristics in the stratigraphic framework are studied, so that objective geological conditions and sedimentary laws are met, the spatial distribution of a sedimentary system can be precisely described, the sedimentary system is convenient to identify, the sedimentary system beneficial to oil-gas exploration is further identified, and the oil-gas excavation is facilitated.
In the first embodiment shown in fig. 1, the method for predicting an unconventional favorable hydrocarbon exploration area further comprises step S102. The method mainly comprises the following steps: and identifying at least one reverse fault and a reverse fault footwall stratum corresponding to the at least one key interface through basic data and structure identification technology.
Preferably, at least one key interface is calibrated by using basic data;
after the at least one key interface is transversely tracked, judging whether the at least one key interface is continuous or not;
and if the fault is discontinuous, identifying the discontinuous key interface and identifying the corresponding reverse fault.
Specifically, at least one piece of two-dimensional seismic data or three-dimensional seismic data in the basic data is utilized to expand the two-dimensional seismic or three-dimensional seismic processing explanation,
(1) calibrating at least one key interface according to the drilling data;
(2) calibrating the depth of a bottom interface of a layer of a key interface on a two-dimensional earthquake or a three-dimensional earthquake, identifying the characteristics of the key interface, namely judging whether the bottom interface is a strong amplitude reflection interface or a weak amplitude reflection interface, identifying the characteristics of upper and lower stratum reflection interfaces of the key interface, namely judging whether the bottom interface is the strong amplitude reflection interface or the weak amplitude reflection interface, the layer number of the strong amplitude reflection interface and the layer number of the weak amplitude reflection interface, and finally performing transverse tracking on the key interface, namely identifying the stratum with the key interface characteristics consistent with the upper and lower stratum characteristics of the key interface, thereby completing the tracking of the key interface.
(3) When the key interface is tracked and a discontinuous phenomenon occurs, the fault is considered to be developed, and then the fault is identified, and the upper and lower plates, the normal fault and the reverse fault of the fault are respectively identified.
Wherein, the fault surface is developed at the position where the fault occurs, namely, the interface of two groups of discontinuous seismic wave reflection. The rock mass above the fault plane is called the upper wall and the rock mass below the fault plane is called the lower wall. And identifying the relative position of the discontinuous key interface, and if the relative position of the key interface on the fault upper disk is lower than the relative position of the key interface on the fault lower disk, determining that the fault is a positive fault. And identifying the relative position of the discontinuous key interface, and if the relative position of the key interface on the upper disk of the fault is higher than the relative position of the key interface on the lower disk of the fault, determining the fault as a reverse fault.
Preferably, from the corresponding reverse fault, the corresponding reverse fault footwall formation is identified.
The relative position of a key interface of an upper wall of the reverse fault is higher than that of a key interface of a lower wall of the fault, so that the key interface with the higher relative position is the upper wall, and the key interface with the lower relative position is the lower wall;
the reverse fault footwall stratum is the key boundary with the low relative position after the judgment and the continuous reflection interface.
In the first embodiment shown in fig. 1, the method for predicting an unconventional favorable hydrocarbon exploration area further comprises step S103. The method mainly comprises the following steps: and carrying out stratum comparison on the reverse fault footwall stratum and the three-level sequence corresponding to the adjacent drilling well, and determining the development condition of the reverse fault footwall in-situ deposition system, thereby obtaining the favorable oil and gas exploration layer system in the research area.
Preferably, the method can further track the key interfaces of the reverse fault footwall. In particular, the amount of the solvent to be used,
(1) calibrating at least one reverse fault footwall key interface according to the drilling data;
(2) calibrating the bottom interface depth of the layer of the reverse fault footwall key interface on a two-dimensional earthquake or a three-dimensional earthquake;
(3) and identifying the characteristics of the upper and lower stratum reflection interfaces of the reverse fault lower wall key interface, namely the characteristics of the combination of one or more reflection interface stratum reflection interfaces. The strong reflection interface is also a weak reflection interface, and on a black-white seismic section, the strong reflection interface is a black continuous line segment, and the weak reflection interface is a white continuous line segment. Identifying the characteristics of the upper and lower stratum reflection interfaces of the key interface to obtain different reflection interface combination characteristics of a white continuous line segment) + a black continuous line segment (or a white discontinuous line segment + a black discontinuous line segment, a white continuous line segment + a black discontinuous line segment, a white discontinuous line segment + a black continuous line segment);
(4) and carrying out transverse tracking on the key interface of the lower wall of the reverse fault, thereby completing the tracking of the key interface of the lower wall of the reverse fault.
According to the reflection characteristics of the reverse fault footwall key interface seismic wave group and the characteristics of the upper and lower stratum reflection interfaces (or the combination characteristics of the upper and lower interfaces) of the key interface, the reverse fault footwall key interface is transversely tracked, and further the development of the reverse fault footwall in-situ deposition system can be comprehensively judged.
In the invention, the in-situ deposition system identification is carried out by using a structure identification technology, which is beneficial to the excavation of oil gas.
In one embodiment of the present invention, the method for predicting an unconventional oil and gas favorable exploration area further comprises: performing ancient biological identification on the rock core of at least one tertiary sequence, judging the deposition environment of the deposition microphase of the at least one tertiary sequence, and improving the accuracy of the previously identified deposition microphase; and
and determining the distribution direction of the sedimentary microfacies by determining the lithology characteristics and the logging response characteristics of the sedimentary microfacies.
In this example, the specific process of ancient bioassay includes the following steps:
firstly, performing ancient biological identification on a sample of a rock core of at least one tertiary sequence, and judging the type and combination of the ancient organisms;
secondly, judging the deposition environment of the sedimentary facies type or sedimentary microphase according to the type of the archaea and the deposition environment corresponding to the combination.
And finally, establishing a transverse distribution mode by determining the lithological characteristics and the logging response characteristics of each sedimentary microfacies and comparing the lithological characteristics and the logging response characteristics with adjacent well bores or field outcrops, and determining the distribution direction of the sedimentary microfacies by combining the self development characteristics of the sedimentary microfacies according to the distribution condition of the transverse (plane) mode.
In the embodiment, ancient organism identification is carried out on a certain stratigraphic unit (group and segment), and the identification of the sedimentation system is mutually promoted, so that the accuracy of the identification of the sedimentation system can be further improved.
In one embodiment of the present invention, the method for predicting an unconventional oil and gas favorable exploration area further comprises: and (4) performing reservoir formation mode analysis on the corresponding reverse fault footwall in-situ deposition system, and determining the exploration and development value of the favorable oil and gas exploration layer system.
Specifically, it is judged whether or not the reverse fault footwall in-situ deposition system has a deposit, wherein
If the depth of the buried history data of the reverse fault footwall in-situ deposition system needs to meet the value of the thermal evolution history data, the thermal evolution history data is larger than 0.5, the hydrocarbon generation history data is larger than 0, and the hydrocarbon discharge history data is larger than 0, the corresponding reverse fault footwall in-situ deposition system has a deposit, otherwise, the deposit does not exist.
In this embodiment, the burial history data of the three-level sequence development range of the reverse fault footwall stratum can be obtained by the following steps:
1) and collecting the name of each layer of stratum subjected to the denudation by the lower layer of the reverse fault, judging the age of each layer of denudation stratum according to geological age representatives, and calculating the thickness of the denudation stratum.
2) Thickness of the denuded formation-thickness of the original sedimentary formation-thickness of the residual formation.
The thickness of the original sedimentary stratum can be referred to the same sedimentary thickness of the geological log in the research area, or the adjacent wells have a complete same layer system; the thickness of the residual formation may be read directly from the drilling data.
3) And calculating to obtain the data of the burying history according to the initial and end data of the sedimentary stratum age and the denudation stratum age.
In this embodiment, the thermal evolution history data of the three-level sequence development range of the reverse fault footwall stratum can be obtained by the following steps:
1) analyzing and testing the rock core of the three-level sequence of the underlying stratum of the reverse fault to obtain the organic matter maturity, the rock thermal conductivity and the rock geothermal gradient of the rock core;
2) and calculating to obtain thermal evolution history data according to the data.
In this embodiment, the hydrocarbon generation history data and the hydrocarbon discharge history data of the three-level sequence development range of the reverse fault lower wall stratum can be obtained by the following steps:
1) analyzing and testing the rock core of the three-level sequence of the underlying stratum of the reverse fault to obtain the organic matter maturity and the kerogen type of the rock core;
2) according to the data, the hydrocarbon production history data and the hydrocarbon discharge history data are respectively obtained.
In the invention, a reservoir-forming mode research technology is used, which is beneficial to determining the oil-gas generation potential of an in-situ deposition system and promoting the excavation of oil gas.
In the first embodiment shown in fig. 1, the subjective judgment of exploration workers is not relied on any more, so that too many subjective factors influencing the exploration result are avoided, and the method has high resolution, reliability, stability and ideal effect, thereby improving the success rate of oil and gas exploration;
in the first embodiment shown in fig. 1, reliable information is provided for oil and gas exploration and development, so that the risk cost of oil and gas exploration and development is reduced, and the oil and gas exploration and development efficiency is improved.
Fig. 3 is a schematic structural diagram of a device for predicting an unconventional oil and gas favorable exploration area of a down-depression and mountainous-western group tidal flat sedimentary system in a second embodiment of the present application, which may be disposed on a terminal or a server capable of data processing, such as a cloud or a local exploration server, and is mainly used for predicting a favorable exploration area in a selected research area.
Specifically, the apparatus in this embodiment may include the following modules:
a first identification module 301, configured to identify a deposition system corresponding to a research area and at least one key interface of the deposition system by using basic data corresponding to the research area, where the key interface includes a sequence interface and/or a maximum flooding surface;
a second identification module 302, which identifies at least one reverse fault and a reverse fault footwall stratum corresponding to the at least one key interface through the basic data and structure identification technology; and
and the determining exploration module 303 is used for performing stratum comparison on the reverse fault footwall stratum and a tertiary sequence corresponding to an adjacent drilling well, and determining the development condition of the reverse fault footwall in-situ deposition system so as to obtain a favorable oil and gas exploration layer system in the research area.
The device for predicting the unconventional oil and gas favorable exploration area of the perioral depression and the mountainous and western group tidal flat sediment system in the peripheral region, provided by the invention, can be used for executing the method for predicting the unconventional oil and gas favorable exploration area of the perioral depression and the mountainous and western group tidal flat sediment system in any embodiment, and the implementation principle and the technical effect are similar, and are not repeated herein.
In one embodiment of the invention, the first identification module 301, the second identification module 302 and the survey determining module 303 of an apparatus for predicting a hydrocarbon exploration layer system of the present invention may be directly in hardware, in a software module executed by a processor, or in a combination of both.
A software module may reside in RAM readable storage medium, flash readable storage medium, ROM readable storage medium, EPROM readable storage medium, EEPROM readable storage medium, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium.
The Processor may be a Central Processing Unit (CPU), other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), other Programmable logic devices, discrete Gate or transistor logic, discrete hardware components, or any combination thereof. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
An embodiment of the present invention provides a computer-readable storage medium storing computer instructions operable to perform the method for predicting an unconventional oil and gas favorable exploration area of a perioral depression and a peripherical mountain group tide level deposit system described in any of the embodiments.
An embodiment of the present invention provides an electronic product, as shown in fig. 4, the electronic product includes at least one processor and a readable storage medium; the readable storage medium stores computer-executable instructions; the at least one processor executes computer-executable instructions stored on the readable storage medium to cause the electronic device to perform the non-conventional oil and gas favorable exploration area prediction method for the intervascular depression and the coastal group tidal level sedimentary system of the peripheral region as described above.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments 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 units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Experimental example 1
Now the perioral depression on the Fuyang-Bozhou region is taken as an example:
(1) determining reverse fault footwall in-situ deposition system for Fuyang-Bozhou region
Identifying a deposition system corresponding to the research area and at least one key interface of the deposition system by using basic data corresponding to the research area, wherein the key interface comprises a sequence interface and/or a maximum flooding surface;
identifying at least one reverse fault and a reverse fault footwall stratum corresponding to at least one key interface through basic data and structure identification technology; and
and carrying out stratum comparison on the reverse fault footwall stratum and the three-level sequence corresponding to the adjacent drilling well, and determining the development condition of the reverse fault footwall in-situ deposition system, thereby obtaining the favorable oil and gas exploration layer system in the research area.
(2) Ancient biological identification of Fuyang-Bozhou region
Firstly, performing ancient biological identification on a sample of a rock core of at least one tertiary sequence, and judging the type and combination of the ancient organisms; abundant dragonfly, bryozoans, echinoderm, and algal fossils can be observed. Secondly, the deposition environment is judged according to the type and the combination of the ancient creatures, and the marine facies deposition in the area can be obtained.
(3) Deposit mode of reverse fault footwall in-situ deposition system
And judging whether the in-situ deposition system of the reverse fault footwall has a grown-in reservoir, wherein if the depth of the burying history data of the in-situ deposition system of the reverse fault footwall needs to meet the value of the thermal evolution history data, the thermal evolution history data is greater than 0.5, the hydrocarbon generation history data is greater than 0, and the hydrocarbon discharge history data is greater than 0, the corresponding in-situ deposition system of the reverse fault footwall has a grown-in reservoir, otherwise, the grown-in reservoir does not exist.
As shown in fig. 5, fig. 5a) new reservoir mode of oil and gas of monyang-bozhou reverse fault footwall, fig. 5b) is a schematic diagram of thermal evolution history and burial history of wan tera 1 well, fig. 5c) is a hydrocarbon generation history map of wan tera 1 well, and fig. 5d) is a hydrocarbon discharge history map of wan tera 1 well.
As can be seen from fig. 5a), the fuyang-bozhou region establishes a new reverse fault footwall reservoir mode of oil and gas: the rock-charcoal-two-stacking system development source stores the shale gas, the coal bed gas and the close-source compact sandstone gas; the Ordovician limestone weathered shell under the plane of the carbolite-dyadic system unconformity can develop into a conventional gas reservoir of the new ancient reservoir, and the oil and gas source is organic-rich shale and coal bed gas of the carbolite-dyadic system.
The burial history data of the three-level sequence development range of the reverse fault footwall stratum can be obtained by the following steps:
1) and collecting the name of each layer of stratum subjected to the denudation by the lower layer of the reverse fault, judging the age of each layer of denudation stratum according to geological age representatives, and calculating the thickness of the denudation stratum.
2) Thickness of the denuded formation-thickness of the original sedimentary formation-thickness of the residual formation.
3) And calculating to obtain the data of the burying history according to the initial and end data of the sedimentary stratum age and the denudation stratum age.
From fig. 5b), it can be seen that 3 stages of burial depths exist in the region of Fuyang-Bozhou where the Wantaishen 1 well is located, and the burial times are 480-.
The stratum of the Ordovician-Carbambusa system is deposited earlier, the first burial depth of the stratum can reach 2200m-2300m within 480-380ma (Ordovician-Clavician), then the influence of tectonic movement from the late stage of the clay basin to the middle stage of the stone charcoal is lifted, the second burial depth is experienced in the late stage of the stone charcoal, but the maximum depth of the burial depth is about 2000m and does not exceed the depth of the first burial depth, and the original evolution degree of the hydrocarbon source rock is still maintained without further evolution. The maximum depth of the burial depth of the carbol-dyle-dwarfism stratum in the first burial process is about 2000m, and then the formation motion influence of the dwarfism-chalk system raises, at the moment, organic matter undergoes thermal evolution and begins to mature and generate hydrocarbon, the maximum depth of the burial depth of the carbol-dyle-dwarfism stratum does not exceed the first burial depth after the second burial depth in the new generation, so that the hydrocarbon source rock does not undergo the second evolution, the maturity of the carbol-dyle hydrocarbon source rock which undergoes the new generation burial is not changed, and the mature oil is taken as the main component.
According to the hydrocarbon generation history analysis of the Wantaishen 1 well, the hydrocarbon source rock hydrocarbon generation history of the stone carbon-binary system is mainly in the Jurassic system-chalk system. The hydrocarbon source rock starts to generate hydrocarbon with the increasing burial depth after deposition, and the hydrocarbon generation amount is larger in figure 5 c). According to the hydrocarbon discharge history of the Wantaishen 1 well, hydrocarbon source rocks of the stone charcoal-di-terylen are born in the Jurassic system-chalk system and begin to discharge hydrocarbons, and figure 5 d). According to the maturity of crude oil in the 1 well and the periphery of the Anhui Taishen and the data of the thermal history, the burying history and the hydrocarbon generation and drainage history of the 1 well of the Anhui Taishen, the existence of the first-stage burial period is considered to be Jurassic-Chalkbrook. The thermal evolution history data of the three-level sequence development range of the reverse fault lower tray stratum can be obtained through the following steps:
1) analyzing and testing the rock core of the three-level sequence of the underlying stratum of the reverse fault to obtain the organic matter maturity, the rock thermal conductivity and the rock geothermal gradient of the rock core;
2) and calculating to obtain thermal evolution history data according to the data.
From fig. 5b) it can be seen that the old and recent formations are not hydrocarbon source formations, this time still the evolution of the carboniferous-di-ternery hydrocarbon source, the degree of thermal evolution of the hydrocarbon source rock is low mature oil-medium mature oil (Ro between 0.5-0.8), and the degree of thermal evolution of the carboniferous-di-ternery formation is mainly developed medium mature oil (Ro between 0.8-1.3).
The hydrocarbon generation history data and the hydrocarbon discharge history data of the three-level sequence development range of the reverse fault lower wall stratum can be obtained by the following steps:
1) analyzing and testing the rock core of the three-level sequence of the underlying stratum of the reverse fault to obtain the organic matter maturity and the kerogen type of the rock core;
2) according to the data, the hydrocarbon production history data and the hydrocarbon discharge history data are respectively obtained.
From FIG. 5c) it can be seen that the history of hydrocarbon formation of the hydrocarbon source rock of the carbolite-dyle system can be divided into two phases. The first stage is that the carbolite-dyadic source rock starts to generate hydrocarbon with the increase of the burial depth after deposition, but the hydrocarbon generation amount is small; the second stage is the ancient series-recent series stage, which is a stage in which the hydrocarbon generation amount of the carbolite-dyad source rock is large.
As can be seen from fig. 5b-d), at least one stage of oil deposit is considered according to the maturity of crude oil in the wan taishen 1 well and the periphery (the hydrocarbon can be generated when the current buried depth reaches 1300 m), and the thermal history, buried history and hydrocarbon generation history of the wan taishen 1 well. However, due to the fact that hydrocarbon generation times are high, and the amount of late hydrocarbon generation is large, the hydrocarbon source rock at the present stage has almost no hydrocarbon generation potential, and therefore the search for hydrocarbon reservoirs formed after late hydrocarbon generation and hydrocarbon discharge is the main exploration direction.
(4) Drilling result
Therefore, the sedimentary system of the research area is divided to construct a sequence stratum framework, and the in-situ body development area is judged according to the structure recognition technology. And recovering the deposition mode of the research area according to the found longitudinal evolution characteristic and transverse spread characteristic of the deposition system, the space-time distribution and the main control factors thereof. Checking the deposition environment to judge whether the deposition environment is accurate or not according to the ancient biological identification technology; and judging whether the stratum favorable to the facies zone original body has the development potential of the oil and gas reservoir according to the reservoir forming simulation technology.
In this experimental example, 1 well of wan feng tai was deployed in the southeast of the research district in the direction of huainan phoenix platform, the target layer of the rock-charcoal system-the taiyuan group of the two-tier system, the shanxi group and the lower rock box group, the current exploration situation is good, the existing well logging explains 9 layers of gas layers, the lithology is mainly black coal, and in addition, the lower rock box group has 3 layers of fine sandstone and also has gas logging to show (table 1). In 2019, the Wan Taishen 1 well and the Wan Bo Shen 1 well which are deployed in Fuyang-Bozhou region, the Wan Taishen 1 well comprehensively log and explain a micro gas-bearing stratum 2 layer (table 2), the Wan Bo Shen 1 well comprehensively log and explain a dry stratum 26 layer and a suspicious gas stratum 1 layer (table 3). Generally, the Wanfeng 1 well is positioned at the southeast part of the Wanbo 1 well, the drilling condition is better than that of the Wanbo 1 well, and the Wanfeng 1 well is positioned at the southeast part of the Wantai 1 well, the drilling condition is better than that of the Wantai 1 well.
TABLE 1 Wanfeng land 1-well rock-charcoal system-two-cascade system gas measuring display table
TABLE 2 Wantaishen 1-well rock-charcoal system-two-cascade system gas logging display table
TABLE 3 Wanbo ginseng 1 well rock-carbon system-two-cascade system gas measurement display table
The south-China-north basin southeast is a favorable exploration area from the perspective of comprehensive well logging explanation results of three well drilling of Wan Bo Shen 1 well, Wan Tai Shen 1 well and Wanfeng ground 1 well. The theory is proved to be practical and effective, and a deployment basis can be provided for the exploration of mountain and west groups in the basin of north south China.
The invention has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to be construed in a limiting sense. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, which fall within the scope of the present invention.
Claims (10)
1. A method for predicting unconventional oil and gas favorable exploration areas of a down-depressed periphery and mountainous and western group tidal flat sedimentary system in a peripheral region is characterized by comprising the following steps of:
identifying a deposition system corresponding to a research area and at least one key interface of the deposition system by using basic data corresponding to the research area, wherein the key interface comprises a sequence interface and/or a maximum flooding surface;
identifying at least one reverse fault and a reverse fault footwall stratum corresponding to the at least one key interface through the basic data and structure identification technology; and
and carrying out stratum comparison on the reverse fault footwall stratum and a three-level sequence corresponding to adjacent drilling wells, and determining the development condition of the reverse fault footwall in-situ deposition system, thereby obtaining the favorable oil and gas exploration layer system in the research area.
2. The method of claim 1, wherein the step of identifying the depositional system corresponding to the area of interest using the basic data corresponding to the area of interest comprises:
dividing the deposition system according to the at least one key interface to obtain at least one key system domain of the deposition system, wherein the key system domain comprises a marine invasion system domain and/or a high-level system domain;
and obtaining at least one tertiary sequence according to the at least one key interface and the at least one key system domain.
3. The method of predicting favorable hydrocarbon exploration areas of claim 2, further comprising:
and recovering the sedimentary pattern of the at least one tertiary sequence through the basic data and the well logging curve of the at least one tertiary sequence, thereby determining the development condition of the sedimentary system in the research area and selecting the sedimentary system which is beneficial to exploration of the research area.
4. The method of predicting favorable hydrocarbon exploration areas of claim 2, further comprising:
performing ancient biological identification on the rock core of the at least one tertiary sequence, and judging the sedimentary environment of sedimentary microfacies of the at least one tertiary sequence;
and determining the distribution direction of the sedimentary microfacies by determining the lithology characteristics and the logging response characteristics of the sedimentary microfacies.
5. The method of predicting an unconventional favorable hydrocarbon exploration area of claim 1, wherein said identifying at least one reverse fault and a reverse fault footwall formation to which said at least one key interface corresponds via said base data and structure identification technique comprises:
calibrating the at least one key interface by using the basic data;
performing transverse tracking on the at least one key interface, and judging whether the at least one key interface is continuous;
and if the fault is discontinuous, identifying the discontinuous key interface and identifying a corresponding reverse fault.
6. The method of predicting an unconventional favorable hydrocarbon exploration area according to any one of claims 1-5, further comprising:
and performing reservoir formation mode analysis on the corresponding reverse fault footwall in-situ deposition system, and determining the exploration and development value of the favorable oil and gas exploration layer system.
7. The method of predicting favorable hydrocarbon exploration areas of claim 6, wherein:
judging whether the reverse fault footwall in-situ deposition system has the deposit, wherein
If the depth of the buried history data of the reverse fault footwall in-situ deposition system needs to meet the value of the thermal evolution history data, the thermal evolution history data is larger than 0.5, the hydrocarbon generation history data is larger than 0, and the hydrocarbon discharge history data is larger than 0, the corresponding reverse fault footwall in-situ deposition system is in a hidden state, otherwise, the corresponding reverse fault footwall in-situ deposition system is not in a hidden state.
8. A device for predicting unconventional oil and gas favorable exploration areas of a down-junction depression and mountainous and western group tidal flat sedimentary system in a peripheral area is characterized by comprising:
the first identification module is used for identifying a deposition system corresponding to a research area and at least one key interface of the deposition system by utilizing basic data corresponding to the research area, wherein the key interface comprises a sequence interface and/or a maximum flooding surface;
the second identification module identifies at least one reverse fault and a reverse fault footwall stratum corresponding to the at least one key interface through the basic data and structure identification technology; and
and the determining exploration module is used for carrying out stratum comparison on the reverse fault footwall stratum and a tertiary sequence corresponding to an adjacent well, and determining the development condition of the reverse fault footwall in-situ deposition system so as to obtain the favorable oil and gas exploration layer system in the research area.
9. A computer readable storage medium characterized in that it stores computer instructions for causing the computer to perform the method of predicting a non-conventional oil and gas favorable exploration area of a perioral depression and a peri-switchplex tide level deposit according to any one of claims 1-7.
10. An electronic device, comprising: at least one processor and a readable storage medium;
the readable storage medium stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the readable storage medium causes the electronic device to perform the perioral depression and peri-regional mountain-greens depositional unconventional oil and gas favorable survey area prediction method of any one of claims 1-7.
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|---|---|---|---|
| CN202110424175 | 2021-04-20 | ||
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| Publication Number | Publication Date |
|---|---|
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Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115903047A (en) * | 2022-12-27 | 2023-04-04 | 中国地质调查局油气资源调查中心 | Method and device for identifying marine carbonate beach facies reservoir |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765065A (en) * | 2015-04-17 | 2015-07-08 | 中国地质大学（北京） | Method and device for determining sedimentary stratum ancient landform |
| US20190212460A1 (en) * | 2018-01-08 | 2019-07-11 | Dagang Oil Field Of Cnpc | Method for secondary exploration of old oil area in fault subsidence basin |
| CN111413737A (en) * | 2020-05-20 | 2020-07-14 | 大庆油田有限责任公司 | Method for explaining seismic horizon to deposition unit in close well pattern area |
| AU2020102025A4 (en) * | 2020-07-02 | 2020-10-01 | China University Of Geosciences, Beijing | Method for Reconstructing Basin Paleogeomorphology |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765065A (en) * | 2015-04-17 | 2015-07-08 | 中国地质大学（北京） | Method and device for determining sedimentary stratum ancient landform |
| US20190212460A1 (en) * | 2018-01-08 | 2019-07-11 | Dagang Oil Field Of Cnpc | Method for secondary exploration of old oil area in fault subsidence basin |
| CN111413737A (en) * | 2020-05-20 | 2020-07-14 | 大庆油田有限责任公司 | Method for explaining seismic horizon to deposition unit in close well pattern area |
| AU2020102025A4 (en) * | 2020-07-02 | 2020-10-01 | China University Of Geosciences, Beijing | Method for Reconstructing Basin Paleogeomorphology |
Non-Patent Citations (9)
| Title |
|---|
| 姜在兴;向树安;陈秀艳;张锐锋;: "淀南地区古近系沙河街组层序地层模式", 沉积学报, no. 05, 15 October 2009 (2009-10-15), pages 2 - 4 * |
| 彭海艳;刘家铎;李勇;肖敦清;刘子藏;袁淑琴;蒲秀刚;丘东洲;韩冰;兰亚萍;李丽;冯境权;颜照坤;龚剑玄;: "陆相层序地层格架与油气勘探研究――以黄骅坳陷孔南地区孔店组为例", 石油物探, no. 03, 25 May 2010 (2010-05-25) * |
| 徐世荣 等.: "周口坳陷发现逆断层及其地质意义", 石油与天然气地质, no. 02, 25 June 1988 (1988-06-25), pages 209 - 210 * |
| 朱剑兵;谭明友;: "济阳坳陷古近系层序地层学研究综述", 地层学杂志, no. 2, 15 December 2007 (2007-12-15) * |
| 林畅松;: "沉积盆地的层序和沉积充填结构及过程响应", 沉积学报, no. 05, 15 October 2009 (2009-10-15), pages 849 - 851 * |
| 王宏波: "柴达木盆地北缘冲断带第三系沉积特征与岩性油气藏预测", 中国博士论文全文数据库, 15 July 2015 (2015-07-15), pages 011 - 19 * |
| 石砥石: "斜坡带岩性油藏的形成条件与勘探技术———以孤岛西部斜坡带沙三段为例", 油气地质与采收率, vol. 13, no. 01, 31 January 2006 (2006-01-31), pages 47 - 50 * |
| 许志文: "莫西庄-永进地区三叠系百口泉组储层分布研究", 中国优秀硕士学位论文全文数据库, 15 February 2021 (2021-02-15), pages 011 - 425 * |
| 陈旭 等.: "塔里木盆地台盆区三叠系三级层序界面和体系域界面的识别与应用", 沉积学报, no. 05, 15 October 2011 (2011-10-15), pages 917 - 925 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115903047A (en) * | 2022-12-27 | 2023-04-04 | 中国地质调查局油气资源调查中心 | Method and device for identifying marine carbonate beach facies reservoir |
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