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CN113970788A - Method and device for compiling exploration target layer ancient structural diagram in hydrocarbon discharge period - Google Patents

Method and device for compiling exploration target layer ancient structural diagram in hydrocarbon discharge period Download PDF

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CN113970788A
CN113970788A CN202010715634.0A CN202010715634A CN113970788A CN 113970788 A CN113970788 A CN 113970788A CN 202010715634 A CN202010715634 A CN 202010715634A CN 113970788 A CN113970788 A CN 113970788A
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horizon
period
geological
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hydrocarbon
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CN113970788B (en
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杨丽莎
陈彬滔
赵伟
白洁
史忠生
薛罗
马轮
王磊
史江龙
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Petrochina Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/30—Analysis
    • G01V1/301—Analysis for determining seismic cross-sections or geostructures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/282—Application of seismic models, synthetic seismograms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
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Abstract

The invention provides a method and a device for compiling an exploration target stratum ancient structural diagram in a hydrocarbon discharge period. Wherein the method comprises the following steps: s11, determining the hydrocarbon discharging period; s12, determining an exploration target layer; s13, determining H corresponding to the hydrocarbon discharge period and the exploration target layerpGeologic horizon and HtGeologic horizon, and generates geologic horizon HpGeologic horizon and HtStratigraphic grid DH of geological horizonpAnd DHt(ii) a S14, determining HpA set of flooded mudstones H immediately above the geological horizonp‑fAnd flooding the mudstone Hp‑fOn the seismic data volume ofp‑fInterpretation of geological horizons; s15, obtaining HpA base slope of a geologic horizon deposition period; s16, obtaining HpA base-form compensated depth grid for a geologic horizon deposition period; s17, acquiring the grid of the ancient tectonic chart of the exploration target stratum in the hydrocarbon expulsion period, thereby obtaining the hydrocarbon expulsionAnd exploring the ancient structure diagram of the target layer in a period.

Description

Method and device for compiling exploration target layer ancient structural diagram in hydrocarbon discharge period
Technical Field
The invention relates to the technical field of geological research, in particular to a method and a device for compiling an ancient tectonic graph of an exploration target stratum in a hydrocarbon expulsion period, and specifically relates to a method and a device for compiling an ancient tectonic graph of an exploration target stratum in a hydrocarbon expulsion period based on seismic data.
Background
The structural diagram of the exploration target layer determines the structural development characteristics, achieves the target beneficial to drilling, finds the basic diagram of the oil and gas reservoir, particularly the hydrocarbon discharge period of the hydrocarbon source rock, and directly influences the trap formation time, the oil and gas filling potential and the exploration success rate by the ancient structural diagram of the exploration target layer. Before exploration and deployment, if an ancient structural diagram of an exploration target layer in a hydrocarbon discharge period can be accurately compiled by means of seismic data, the well exploration success rate can be greatly improved.
Currently, for exploration and deployment, most researchers only carry out trap identification and well location deployment according to the current construction diagram, and do not accurately depict ancient structural features of an exploration target layer in a hydrocarbon discharge period, but one of key elements of a hydrocarbon-containing structure, namely the matching relation between the formation time of the construction trap and the hydrocarbon discharge period, only if the formation time of the construction trap is earlier than or approximately equal to the hydrocarbon discharge period, a large amount of oil and gas can be captured to form the hydrocarbon-containing structure. If late tectonic development or late tectonic reversal exists in the study area, tectonic traps on current tectonic maps may form after the hydrocarbon expulsion period, and such tectonic traps, although well-conditioned, are unable to capture hydrocarbons. Therefore, the sequence relation between the formation time of the formation trap and the hydrocarbon discharge period cannot be accurately reflected only according to the current structural diagram, and the success rate of the formation trap drilling in exploration and deployment is low.
Therefore, how to draw the ancient structural diagram of the exploration target stratum in the hydrocarbon discharge period is an urgent problem to be solved.
Disclosure of Invention
The invention aims to provide a compiling method for exploring an ancient structure diagram of a target layer in a hydrocarbon discharge period;
the method can accurately reflect the sequence relation between the formation time of the structural trap and the hydrocarbon discharge period, and then the existing structural trap in the hydrocarbon discharge period can be optimized for drilling during exploration and deployment, so that the success rate of exploratory well is improved.
Another object of the present invention is to provide a compiling device for exploring the ancient structural drawing of the target layer during the hydrocarbon discharge period.
In order to achieve the above object, in one aspect, the present invention provides a method for compiling an ancient tectonic chart of a prospecting target stratum during a hydrocarbon discharge period, wherein the method comprises the following steps:
s11, determining the hydrocarbon discharging period (p);
s12, determining an exploration target layer (t);
s13, determining H corresponding to the hydrocarbon discharge period and the exploration target layerpGeologic horizon and HtGeologic horizon, and generates geologic horizon HpGeologic horizon and HtStratigraphic grid DH of geological horizonpAnd DHt；
S14, determining HpA set of flooded mudstones H immediately above the geological horizonp-fAnd flooding the mudstone Hp-fOn the seismic data volume ofp-fInterpretation of geological horizons;
s15, obtaining HpA base slope of a geologic horizon deposition period;
s16, obtaining HpA base-form compensated depth grid for a geologic horizon deposition period;
and S17, acquiring the grid of the ancient structure diagram of the exploration target layer in the hydrocarbon expulsion period, thereby obtaining the ancient structure diagram of the exploration target layer in the hydrocarbon expulsion period.
It should be understood that the numbers of the steps in the front of the steps of the present invention are only used for representing the numbers of the steps, and the sequence of the steps is not limited.
According to some embodiments of the invention, step S11 includes determining the hydrocarbon ejection period (p) using a hydrocarbon ejection curve method.
According to some embodiments of the invention, step S11 includes determining the hydrocarbon expulsion time period based on the results of the analysis of the source rock in the research area.
According to some embodiments of the invention, step S11 includes determining the hydrocarbon expulsion time period based on the hydrocarbon production time, the hydrocarbon expulsion time, and the hydrocarbon expulsion amount of the source rock in the study area.
According to some embodiments of the present invention, step S11 includes creating a hydrocarbon generation-discharge time map based on the hydrocarbon generation time, the hydrocarbon discharge time, and the hydrocarbon discharge amount of the source rock in the study area, and determining the hydrocarbon discharge period according to the hydrocarbon generation-discharge time map.
According to some embodiments of the invention, step S12 includes determining the exploration target zone based on the research area reservoir combination analysis.
According to some embodiments of the invention, step S12 includes determining the exploration target zone based on the muddiness curve obtained from the analysis of the study area reservoir combination.
According to some embodiments of the invention, step S13 includes determining H corresponding to the hydrocarbon expulsion time and the exploration target layer by using a well seismic calibration methodpGeologic horizon and HtA geological horizon.
According to some embodiments of the invention, step S13 includes determining the period of hydrocarbon expulsion and the H corresponding to the exploration target intervalpGeologic horizon and HtGeological horizon, seismic horizon calibration and H on seismic data volumepGeologic horizon and HtInterpretation of geological horizons, generation of H based on seismic interpretation resultspGeologic horizon and HtStratigraphic grid DH of geological horizonpAnd DHt。
According to some embodiments of the invention, step S13 includes generating H by interpolation based on the seismic interpretation resultpGeologic horizon and HtStratigraphic grid DH of geological horizonpAnd DHt。
According to some embodiments of the invention, the hydrocarbon discharge period of step S13 is the hydrocarbon discharge period determined in step S11; the exploration target layer of step S13 is the determination of the exploration target layer of step S12.
According to some embodiments of the invention, step S14 includes determining HpA set of flooded mudstones H immediately above the geological horizonp-fPerforming seismic horizon calibration and performing H on seismic data volumep-fInterpretation of geologic horizons.
According to some embodiments of the invention, step S14 includes determining H based on the seismic and geological information of the area of interestpA set of flooded mudstones H immediately above the geological horizonp-fPerforming seismic horizon calibration and performing H on seismic data volumep-fInterpretation of geologic horizons.
According to some embodiments of the invention, step S15 includes adding HpThe included angle between the geological horizon and the horizontal plane is set as HpBase slope during geologic horizon deposition.
According to some embodiments of the invention, step S15 includes, among other things, identifying H based on knowledge of the horizontal spread of the flood mudstone deposition periodsp-fLeveling off geological horizon and taking H at the momentpThe included angle between the geological horizon and the horizontal plane is set as HpBase slope during geologic horizon deposition.
According to some embodiments of the invention, step S16 comprises substituting HpThe position with the minimum buried depth of the geological layer is a 0 point according to HpBase slope of geologic horizon deposition period, generating HpA bottom shape of the geologic horizon deposition period compensates the depth grid.
According to some embodiments of the present invention, step S16 includes obtaining H using the following formula (1)pGeologic horizon depositionThe floor of the epoch compensates the depth grid:
DBp＝(DHp-Hpmin)×cosα (1)
wherein, DBpRepresents HpA bottom-form compensated depth grid for a geologic horizon deposition epoch,
DHprepresents HpA grid of a geological layer is formed,
Hpminrepresents HpGeological layer grid DHpThe minimum value of (a) is determined,
alpha represents HpBase slope during geologic horizon deposition.
According to some embodiments of the invention, step S17 includes utilizing HtGeological layer grid, HpGeological layer grid, HpGeological layer grid DHpMinimum value of (1) and HpAnd acquiring an ancient tectonic graph of an exploration target layer in the hydrocarbon drainage period by the bottom slope of the geological horizon deposition period.
According to some embodiments of the present invention, step S17 includes obtaining an ancient tectonic map of the exploration target stratum during the hydrocarbon drainage period using the following equation (2):
DTp＝DHt-DHp+(DHp-Hpmin)×cosα (2)
wherein, DTpRepresents the ancient structural diagram of the exploration target layer in the hydrocarbon discharge period,
DHtrepresents HtA grid of a geological layer is formed,
DHprepresents HpA grid of a geological layer is formed,
Hpminrepresents HpGeological layer grid DHpThe minimum value of (a) is determined,
alpha represents HpBase slope during geologic horizon deposition.
In another aspect, the present invention provides a device for compiling an ancient tectonic chart of a exploration target stratum during a hydrocarbon drainage period, wherein the device comprises: the device comprises an information loading unit, a hydrocarbon discharge period determining unit, an exploration target layer determining unit, a seismic interpretation and layer grid generating unit, a bottom shape compensation depth grid calculating unit and a hydrocarbon discharge period exploration target layer ancient structural diagram layer grid calculating and mapping unit.
According to some embodiments of the invention, the information loading unit is configured to load the source rock analysis data, the well logging data, and the seismic data into the analysis system.
According to some embodiments of the invention, the hydrocarbon expulsion time period determination unit is configured to determine the hydrocarbon expulsion time period based on source rock analysis data of the investigation region.
According to some specific embodiments of the invention, the exploration target layer determination unit is used for determining the exploration target layer based on the research area reservoir combination analysis result.
According to some embodiments of the invention, the seismic interpretation and layer grid generation unit is configured to perform seismic horizon calibration and to perform horizon interpretation and layer grid generation on the seismic data volume.
According to some embodiments of the invention, wherein the bottom form compensates for the depth grid (DB)p) The calculation unit is based on formula DBp＝(DHp-Hpmin) Xcos alpha calculation of the base-shape compensated depth grid, HpminIs a layer mesh DHpMinimum value of, DHpIs a layer grid of hydrocarbon discharge period (p), alpha is HpBase slope during geologic horizon deposition.
According to some embodiments of the invention, the hydrocarbon drainage time period surveys a grid of ancient structural diagram layers (DT)p) Calculation and mapping unit based on formula DTp＝DHt-DHp+(DHp-Hpmin) Xcos alpha calculation exploration target layer ancient structural graph layer grid, DHtLayer meshes for exploration of layers (t) of interest, DHpIs a layer grid of hydrocarbon expulsion periods (p), HpminIs a layer mesh DHpA is HpBase slope during geologic horizon deposition. Based on the layer mesh (DT)p) And generating a paleostructural diagram of the exploration target stratum during the hydrocarbon discharge period.
In summary, the present invention provides a method and apparatus for compiling an ancient architecture diagram of a prospecting target layer during a hydrocarbon discharge period. The method of the invention has the following advantages:
the method can accurately reflect the sequence relation between the formation time of the structural trap and the hydrocarbon discharge period, and then the existing structural trap in the hydrocarbon discharge period is preferably selected for drilling in exploration and deployment, so that the success rate of exploratory well is improved.
Drawings
FIG. 1 is a flow chart of an embodiment of the present invention for developing a paleotectonic map of a exploration target zone during a hydrocarbon drainage period.
FIG. 2 is an illustration of a hydrocarbon drainage period, exploration target layer, and depth of current formation in an embodiment of the present invention.
Fig. 3 is an actual seismic interpretation section in an embodiment of the invention.
Fig. 4 is a diagram illustrating a method of determining the slope (α) of the substrate in accordance with an embodiment of the present invention.
FIG. 5 is a table grid (DT) of an ancient structural diagram of a hydrocarbon drainage period exploration target layer in an embodiment of the inventionp) And calculating an explanatory diagram.
FIG. 6 is a graph showing the actual calculation of the horizon grid (DTp) of the exploration target interval ancient architecture diagram during the hydrocarbon expulsion period in an embodiment of the present invention.
Fig. 7 is a final ancient structural diagram obtained in an embodiment of the present invention.
FIG. 8 is a schematic diagram of a method for constructing an ancient architecture diagram of a exploration target stratum during a hydrocarbon drainage period according to an embodiment of the invention.
Detailed Description
The following detailed description is provided for the purpose of illustrating the embodiments and the advantageous effects thereof, and is not intended to limit the scope of the present disclosure.
Example 1
This example provides a method for compiling an ancient structural diagram of exploration of a target stratum during a hydrocarbon drainage period, which includes the following steps (as shown in fig. 1):
s11, determining the hydrocarbon expulsion period (p) based on the analysis result of the hydrocarbon expulsion curve of the hydrocarbon source rock in the research area. In this example, hydrocarbon generation indicators of hydrocarbon source rocks in a basin of an oil field in Africa were analyzed to determine the deposition period of the recent family J, which is the hydrocarbon expulsion period (p) of the hydrocarbon source rocks, as shown in FIG. 2.
S12, determining an exploration target layer (t) based on the analysis result of the reservoir cap combination of the research area; in this example, the reservoir and cap stratum of the basin of an oil field in Africa were analyzed for their combination characteristics, and the ancient Y group was determined as the exploration target stratum (t), as shown in FIG. 2.
S13, determining the geological horizon H corresponding to the hydrocarbon discharge period and the exploration target layer by the well seismic calibration methodpAnd HtPerforming seismic horizon calibration and performing H on seismic data volumepAnd HtInterpretation of horizons, producing horizon H based on seismic interpretation resultspAnd HtOf the layer mesh DHpAnd DHt. In this example, geological horizon H corresponding to the drainage period (recent line J group) and exploration target layer (ancient line Y group) of a certain oil field in AfricapAnd HtWell seismic calibration is carried out, and H is carried out on a seismic data volumepAnd HtHorizon tracking interpretation (see fig. 3) of horizons, and generating horizon H by adopting an interpolation method based on seismic interpretation resultspAnd HtOf the layer mesh DHpAnd DHt。
S14, determining H based on the well log interpretation of the known wellpA set of flooded mudstones (H) immediately above the horizonp-f) Performing seismic horizon calibration and performing H on seismic data volumep-fHorizon tracking interpretation of horizons. In the embodiment, a set of flooding mudstones immediately above a recent group J in the hydrocarbon discharge period of an oil field in Africa is determined to be a recent group M (H) of flooding mudstonesp-f) See fig. 2.
S15, obtaining HpBase slope during geologic horizon deposition. Based on the knowledge of horizontal spreading of the sedimentary period of the flooded mudstone, H isp-fHorizon leveling, at this time HpThe included angle (alpha) between the geological horizon and the horizontal plane is HpA base slope (α) of a geologic horizon deposition epoch. In the embodiment, based on the knowledge of horizontal spreading of the sedimentary period of the flooded mudstone, M groups of newly flooded mudstones (H) are tiedp-f) Flare when the late stage of hydrocarbon expulsion is group J (H)p) The included angle with the horizontal plane is HpGeologic horizon depositionThe foot slope (α ═ 15 °) of the epoch, see fig. 4.
S16, obtaining HpBottom shape compensated depth grid (DB) for geologic horizon depositional time periodsp) With HpThe position with the minimum buried depth of the geological layer is a 0 point according to HpBase slope (alpha) of geologic horizon deposition period, generating HpBottom shape compensated depth grid (DB) for geologic horizon depositional time periodsp)，DBp＝(DHp-Hpmin)×cosα，HpminIs a layer mesh DHpIs measured. In this example, the late stage of the hydrocarbon expulsion is defined as group J (H)p) The position with the minimum buried depth of the geological layer is a 0 point according to HpBase slope (α 15 °) of geologic horizon deposition period, generating HpBottom shape compensated depth grid (DB) for geologic horizon depositional time periodsp) Corresponding to C-C', DB in FIG. 5p＝(DHp-Hpmin)×cos15°，HpminIs a layer mesh DHpCorresponds to B-B' in fig. 4.
S17, obtaining the exploration target layer ancient structure diagram layer grid (DT) in the hydrocarbon discharge periodp)，DTp＝DHt-DHp+(DHp-Hpmin) Xcos. alpha. in the formula. In this embodiment, the layer mesh (DH) of the ancient Y-set of the exploration target layer is usedt) Subtract the stratigraphic grid (DH) of the late family J group in the hydrocarbon drainage periodp) (results are C' -C in FIG. 5) plus the late upper Hydrocarbon line group J (H)p) Bottom profile compensated depth grid (DB) for deposition periodsp) (C-C' in FIG. 5) obtaining the paleotectonic layer grid (DT) of the exploration target layer during the hydrocarbon drainage periodp) See fig. 6, corresponding to C-C "in fig. 5. And finally, an ancient tectonic diagram of the exploration target stratum during the hydrocarbon discharge period of the oil field is generated, and the ancient tectonic diagram is shown in figure 7. The figure shows that in the hydrocarbon discharge period, a plurality of high points of the exploration target layer exist and are favorable positions for oil and gas accumulation, and 2 exploratory wells deployed according to the ancient structural figure obtain exploration breakthrough, so that the success rate of exploration and deployment is effectively improved.
Example 2
The present embodiment provides an apparatus 400 for exploring the paleotectonic map of a target zone during hydrocarbon drainage, as shown in FIG. 8, the apparatus comprising: information addingA loading unit 401, a hydrocarbon discharge period determining unit 402, a exploration target layer determining unit 403, a seismic interpretation and layer mesh generating unit 404, a bottom form compensation depth mesh (DB)p) Calculation unit 405, exploration target layer ancient structural diagram layer grid (DT) in hydrocarbon discharge periodp) A calculation and mapping unit 406.
Wherein the information loading unit 401 is used for loading the hydrocarbon source rock analysis data, well logging and seismic data to the analysis system. The purge period determination unit 402 is configured to determine a purge period based on the source rock analysis data of the study area. The exploration target layer determination unit 403 is configured to determine an exploration target layer based on the analysis result of the research area reservoir combination. Seismic interpretation and layer grid generation unit 404 is configured to perform seismic horizon calibration and perform horizon interpretation and generation of layer grids on the seismic data volume. Bottom shape compensated depth grid (DB)p) The calculation unit 405 bases on the formula DBp＝(DHp-Hpmin) Xcos alpha calculation of the base-shape compensated depth grid, HpminIs a layer mesh DHpMinimum value of, DHpIs a layer grid of hydrocarbon discharge period (p), alpha is HpBase slope during geologic horizon deposition. Exploration of target layer ancient structural map layer grid (DT) in hydrocarbon discharge periodp) The calculation and mapping unit 406 is based on the formula DTp＝DHt-DHp+(DHp-Hpmin) Xcos alpha calculation exploration target layer ancient structural graph layer grid, DHtLayer meshes for exploration of layers (t) of interest, DHpIs a layer grid of hydrocarbon expulsion periods (p), HpminIs a layer mesh DHpA is HpBase slope during geologic horizon deposition. Based on the layer mesh (DT)p) And generating a paleostructural diagram of the exploration target stratum during the hydrocarbon discharge period.

Claims (13)

1. A method for compiling an ancient tectonic graph of an exploration target stratum during a hydrocarbon drainage period, wherein the method comprises the following steps:
s11, determining the hydrocarbon discharging period;
s12, determining an exploration target layer;
s13, determining H corresponding to the hydrocarbon discharge period and the exploration target layerpGeologic horizon and HtGeologic horizon, and generates geologic horizon HpGeologic horizon and HtStratigraphic grid DH of geological horizonpAnd DHt；
S14, determining HpA set of flooded mudstones H immediately above the geological horizonp-fAnd flooding the mudstone Hp-fOn the seismic data volume ofp-fInterpretation of geological horizons;
s15, obtaining HpA base slope of a geologic horizon deposition period;
s16, obtaining HpA base-form compensated depth grid for a geologic horizon deposition period;
and S17, acquiring the grid of the ancient structure diagram of the exploration target layer in the hydrocarbon expulsion period, thereby obtaining the ancient structure diagram of the exploration target layer in the hydrocarbon expulsion period.
2. The method of claim 1, wherein step S11 includes determining a hydrocarbon expulsion period based on results of analysis of a source rock of the study area.
3. The method of claim 1 or 2, wherein step S12 includes determining an exploration target zone based on the research area reservoir combination analysis.
4. A method according to any one of claims 1 to 3, wherein step S13 includes determining the H corresponding to the drainage period and the exploration target intervalpGeologic horizon and HtGeological horizon, seismic horizon calibration and H on seismic data volumepGeologic horizon and HtInterpretation of geological horizons, generation of H based on seismic interpretation resultspGeologic horizon and HtStratigraphic grid DH of geological horizonpAnd DHt。
5. The method according to any one of claims 1 to 4, wherein step S14 includes determining HpA set of flooded mudstones H immediately above the geological horizonp-fPerforming seismic horizon calibration and performing H on seismic data volumep-fInterpretation of geologic horizons.
6. The method of any one of claims 1 to 5, wherein step S14 includes determining H based on the seismic and geological information of the study areapA set of flooded mudstones H immediately above the geological horizonp-fPerforming seismic horizon calibration and performing H on seismic data volumep-fInterpretation of geologic horizons.
7. The method according to any one of claims 1 to 6, wherein step S15 includes mixing HpThe included angle between the geological horizon and the horizontal plane is set as HpBase slope during geologic horizon deposition.
8. The method of any one of claims 1 to 7, wherein step S15 includes identifying H based on knowledge of horizontal spread of the deposition periods of the flooded mudstonep-fLeveling off geological horizon and taking H at the momentpThe included angle between the geological horizon and the horizontal plane is set as HpBase slope during geologic horizon deposition.
9. The method according to any one of claims 1 to 8, wherein step S16 includes mixing with HpThe position with the minimum buried depth of the geological layer is a 0 point according to HpBase slope of geologic horizon deposition period, generating HpA bottom shape of the geologic horizon deposition period compensates the depth grid.
10. The method according to any one of claims 1 to 9, wherein step S16 includes obtaining H using the following formula (1)pBottom-form compensated depth grid for geologic horizon depositional time period:
DBp＝(DHp-Hpmin)×cosα (1)
wherein, DBpRepresents HpA bottom-form compensated depth grid for a geologic horizon deposition epoch,
DHprepresents HpA grid of a geological layer is formed,
Hpminto representHpGeological layer grid DHpThe minimum value of (a) is determined,
alpha represents HpBase slope during geologic horizon deposition.
11. The method according to any one of claims 1 to 10, wherein step S17 includes using HtGeological layer grid, HpGeological layer grid, HpGeological layer grid DHpMinimum value of (1) and HpAnd acquiring an ancient tectonic graph of an exploration target layer in the hydrocarbon drainage period by the bottom slope of the geological horizon deposition period.
12. The method according to any one of claims 1 to 11, wherein step S17 includes obtaining the drainage period exploration target interval ancient structure map by using the following formula (2):
DTp＝DHt-DHp+(DHp-Hpmin)×cosα (2)
wherein, DTpRepresents the ancient structural diagram of the exploration target layer in the hydrocarbon discharge period,
DHtrepresents HtA grid of a geological layer is formed,
DHprepresents HpA grid of a geological layer is formed,
Hpminrepresents HpGeological layer grid DHpThe minimum value of (a) is determined,
alpha represents HpBase slope during geologic horizon deposition.
13. An apparatus for compiling an ancient architecture diagram of a exploration target stratum during a hydrocarbon drainage period, wherein the apparatus comprises: the device comprises an information loading unit, a hydrocarbon discharge period determining unit, an exploration target layer determining unit, a seismic interpretation and layer grid generating unit, a bottom shape compensation depth grid calculating unit and a hydrocarbon discharge period exploration target layer ancient structural diagram layer grid calculating and mapping unit.
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