CN112881385A - Carbonate oil-gas reservoir geological process reconstruction method based on dating technology - Google Patents
Carbonate oil-gas reservoir geological process reconstruction method based on dating technology Download PDFInfo
- Publication number
- CN112881385A CN112881385A CN202110022738.8A CN202110022738A CN112881385A CN 112881385 A CN112881385 A CN 112881385A CN 202110022738 A CN202110022738 A CN 202110022738A CN 112881385 A CN112881385 A CN 112881385A
- Authority
- CN
- China
- Prior art keywords
- carbonate
- sample
- diagenetic
- asphalt
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/02—Prospecting
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- Geophysics (AREA)
- Sampling And Sample Adjustment (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention provides a carbonate oil and gas reservoir geological process reconstruction method based on a dating technology. The method comprises the following steps: obtaining a rock sample which is rich in hydrocarbon inclusion in the carbonate diagenetic minerals and has an associated relation with the asphalt, and taking the rock sample as a rock sample for reconstruction and analysis in the geological process of the oil-gas reservoir in the work area; the method comprises the steps of specifically analyzing host minerals rich in hydrocarbon inclusion in rock samples, carrying out isotope dating and cluster isotope testing to obtain the absolute age of the host minerals rich in the hydrocarbon inclusion, wherein the obtained absolute age data represents the time of the main reservoir period of the oil and gas reservoir; specifically analyzing carbonate diagenetic minerals associated with asphalt in the rock sample, and carrying out isotope year measurement to obtain the absolute age of the carbonate diagenetic minerals so as to determine the time for filling and cracking crude oil; and reconstructing the oil and gas reservoir geological process based on the filling time, the cracking time and the main reservoir forming time of the crude oil.
Description
Technical Field
The invention belongs to the technical field of carbonate oil and gas reservoir evaluation in petroleum and natural gas geological exploration, and particularly relates to a carbonate oil and gas reservoir geological process reconstruction method based on a dating technology.
Background
Reconstruction of the geological process of the oil-gas reservoir is one of bottleneck technical problems faced by oil-gas exploration and evaluation, in particular reconstruction of the geological process of the oil-gas reservoir in the cross-structure period of ancient marine carbonate rock of an underground tectonic layer of a superimposed basin in China; the determination of the oil and gas reservoir period is the key for solving the problem of reconstruction of the geological process of the oil and gas reservoir. The prior commonly used method for determining the oil and gas accumulation time comprises a geological comprehensive analysis method, an inclusion homogeneous temperature method, a diagenetic mineral isotope dating method and an oil and gas product (asphalt and crude oil) direct dating method.
The geological comprehensive analysis method is mainly used for analyzing the trap formation time and the hydrocarbon source rock hydrocarbon generation and drainage time based on the structure-burial history and the basin thermal history, and qualitatively studying and judging the oil and gas reservoir formation time. The inclusion homogeneous temperature method mainly determines hydrocarbon generation and discharge temperature of a hydrocarbon source rock based on inclusion capture temperature, qualitatively judges oil and gas accumulation time by combining structure-burying history and basin thermal history analysis, has large homogeneous temperature change due to instability and component difference of organic matters in hydrocarbon inclusions, and has high stability of homogeneous temperature of saline inclusions, so that a gas-liquid two-phase saline inclusion which is symbiotic with the hydrocarbon inclusions is generally used as a test object, and the homogeneous temperature of the gas-liquid two-phase saline inclusions can be considered to represent the capture temperature of the hydrocarbon inclusions only when the same host mineral simultaneously contains the hydrocarbon inclusions and the gas-liquid two-phase saline inclusions in the same period. Moreover, the inversion of the formation time of the oil and gas reservoir by using a geological comprehensive analysis method and the uniform temperature of the inclusion requires a reliable ancient geothermal model and a reservoir history model, and a great deal of uncertainty exists due to the divergence of geological knowledge. The method for determining the age of diagenetic mineral isotopes reports that the age-determining time of the oil-gas reservoir is quantitatively determined by illite K (Ar) -Ar, apatite or zircon U-Th/He, but the method is mainly suitable for clastic rock and igneous rock oil-gas reservoirs and has larger uncertainty due to the restriction of geological understanding. The method for directly determining the years of oil and gas products (asphalt and crude oil) mainly uses a rhenium-osmium isotope dating method, although the method can be used for quantitatively analyzing the oil and gas generation and cracking time, the geological meaning of the Re-Os isotope age is also divergent due to the possibility of resetting a Re-Os isotope system in the oil and gas migration and transformation processes, and moreover, the rhenium-osmium dating requirements on samples are severe, the detection success rate is low, and the method is difficult to popularize.
Furthermore, the former people pay more attention to a certain main time point in the secondary research process of the oil and gas reservoir period, and what the oil and gas reservoir experience is often ignored is a process from generation, filling, migration, cracking to reservoir formation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an effective carbonate oil and gas reservoir geological process reconstruction method based on the dating technology, which realizes quantitative and refined research and judgment of carbonate oil and gas reservoir formation period and reconstruction of an oil and gas reservoir geological process.
In order to achieve the aim, the invention provides a carbonate oil and gas reservoir geological process reconstruction method based on dating technology, wherein the method comprises the following steps:
obtaining a rock sample for geological process reconstruction and analysis of oil and gas reservoir in a work area, wherein the rock sample for geological process reconstruction and analysis of the oil and gas reservoir comprises the characteristics that hydrocarbon inclusion is rich in carbonate diagenetic minerals, and the carbonate diagenetic minerals and asphalt have associated relation;
determining host minerals rich in hydrocarbon inclusion in rock samples for geological process reconstruction analysis of the oil and gas reservoir, and carrying out isotope dating to obtain the absolute age of the host minerals rich in hydrocarbon inclusion; the host mineral is a carbonate diagenetic mineral; the hydrocarbon inclusion-rich refers to the condition that a single host mineral contains more than 2 hydrocarbon inclusions;
determining carbonate diagenetic minerals associated with the asphalt in the rock samples for geological process reconstruction analysis of the oil-gas reservoir, and carrying out isotope year measurement on the carbonate diagenetic minerals associated with the asphalt to obtain the absolute age of the carbonate diagenetic minerals associated with the asphalt, so as to determine the time for charging and cracking crude oil;
reconstructing the hydrocarbon reservoir geological process based on the absolute age of the host mineral enriched in hydrocarbon inclusions and the absolute age of the carbonate diagenetic mineral associated with the bitumen.
In the reconstruction method of the geological process of the carbonate oil and gas reservoir, the absolute age of the host mineral rich in the hydrocarbon inclusion represents the main reservoir time of the oil and gas.
In the above reconstruction method for geologic process of carbonate hydrocarbon reservoir, preferably, the obtaining of a rock sample for geologic process reconstruction analysis of hydrocarbon reservoir in a work area includes:
obtaining a work area representative rock sample; wherein the characteristic of the representative rock sample comprises pore and/or pore development, filling of carbonate diagenetic minerals at the periphery of the pore and/or pore, and filling of crude oil and/or bitumen in the pore and/or pore;
and respectively carrying out hydrocarbon inclusion observation and carbonate diagenetic mineral and asphalt association relation observation on each obtained rock sample, and selecting the rock sample which is rich in hydrocarbon inclusion in the carbonate diagenetic mineral and has association relation with the asphalt as the rock sample for reconstruction and analysis in the geological process of oil-gas reservoir formation in the work area.
In the above reconstruction method for geologic process of carbonate hydrocarbon reservoir, preferably, the determining the time for filling and cracking crude oil comprises:
carrying out diagenetic sequence research on the bituminous and carbonate diagenetic minerals by using the rock sample based on the geological process reconstruction analysis of the oil-gas reservoir, and establishing diagenetic sequences of the bituminous and carbonate diagenetic minerals;
judging the charging and cracking time of the crude oil based on the diagenetic sequence of the asphalt and the carbonate diagenetic minerals and the absolute age of the measured carbonate diagenetic minerals associated with the asphalt; wherein the crude oil filling time is after the absolute age of the oldest carbonate diagenetic mineral before the asphalt at the periphery of the pores and/or holes (i.e. the crude oil filling time is after the absolute age of the oldest carbonate diagenetic mineral in the carbonate diagenetic minerals holding the asphalt), the crude oil cracking time is before the absolute age of the youngest carbonate diagenetic mineral after the asphalt filled in the pores and/or holes (i.e. the crude oil cracking time is before the absolute age of the youngest carbonate diagenetic mineral in the carbonate diagenetic minerals holding the asphalt), and the crude oil filling and cracking time is between the absolute age of the youngest carbonate diagenetic mineral before the asphalt at the periphery of the pores and/or holes and the absolute age of the youngest carbonate diagenetic mineral after the asphalt filled in the pores and/or holes (i.e. the crude oil filling and cracking time is between the absolute ages of the two diagenetic minerals holding the asphalt In between).
In the above-described carbonatite hydrocarbon reservoir geologic process reconstruction method, preferably, the observation of hydrocarbon inclusions is performed using a sample slice a made of a rock sample. More preferably, the thickness of the sample sheet A is 80 to 100. mu.m. In one embodiment, the sample sheet A has a thickness of 100 μm.
In the above-described carbonatite oil and gas reservoir geological process reconstruction method, preferably, the diagenetic sequence study of the bitumen and the carbonate diagenetic minerals is performed using a sample slice B made of a rock sample. More preferably, the thickness of the sample sheet B is 30 μm ± 5 μm.
In the above-described carbonatite hydrocarbon reservoir geological process reconstruction method, preferably, the isotope dating is performed using a sample slice C made of a rock sample. More preferably, the thickness of the sample chip C is 80 to 100. mu.m. In one embodiment, the sample wafer C has a thickness of 100 μm.
In a specific embodiment, the carbonate hydrocarbon reservoir geological process reconstruction method includes:
obtaining a work area representative rock sample; wherein the characteristic of the representative rock sample comprises pore and/or pore development, filling of carbonate diagenetic minerals at the periphery of the pore and/or pore, and filling of crude oil and/or bitumen in the pore and/or pore;
respectively preparing at least 2 parallel samples corresponding to each representative rock sample of the obtained work area, preparing a sample slice A, a sample slice B and a sample slice C of the representative rock sample by using the parallel samples, and reserving the residual parts of the parallel samples;
for each obtained representative rock sample of the work area, observing a hydrocarbon inclusion of the sample slice A, observing an association relation between carbonate diagenetic minerals and asphalt of the sample slice B, and selecting the rock sample which is rich in the hydrocarbon inclusion and has the association relation between the carbonate diagenetic minerals and the asphalt as a rock sample for rebuilding and analyzing the geological process of the oil-gas reservoir of the work area;
carrying out diagenesis sequence research on the asphalt and carbonate diagenesis minerals on a sample slice B corresponding to the rock sample for reconstruction and analysis of the geological process of the oil-gas reservoir in the work area, and establishing diagenesis sequences of the asphalt and carbonate diagenesis minerals;
determining carbonate diagenetic minerals corresponding to host minerals rich in hydrocarbon inclusion in the sample slice A of the rock sample and carbonate diagenetic minerals corresponding to asphalt-associated carbonate diagenetic minerals in the sample slice B of the rock sample in the sample slice C corresponding to the rock sample for reconstruction analysis in the geological process of the oil-gas reservoir of the selected work area, and performing isotope year measurement to obtain the absolute age of the host minerals rich in hydrocarbon inclusion and the absolute age of the asphalt-associated carbonate diagenetic minerals;
judging the charging and cracking time of the crude oil based on the diagenetic sequence of the asphalt and the carbonate diagenetic minerals and the absolute age of the measured carbonate diagenetic minerals associated with the asphalt; wherein the crude oil filling time is after the absolute age of the oldest carbonate diagenetic mineral before the asphalt at the periphery of the pores and/or holes (i.e. the crude oil filling time is after the absolute age of the oldest carbonate diagenetic mineral in the carbonate diagenetic minerals holding the asphalt), the crude oil cracking time is before the absolute age of the youngest carbonate diagenetic mineral after the asphalt filled in the pores and/or holes (i.e. the crude oil cracking time is before the absolute age of the youngest carbonate diagenetic mineral in the carbonate diagenetic minerals holding the asphalt), and the crude oil filling and cracking time is between the absolute age of the youngest carbonate diagenetic mineral before the asphalt at the periphery of the pores and/or holes and the absolute age of the youngest carbonate diagenetic mineral after the asphalt filled in the pores and/or holes (i.e. the crude oil filling and cracking time is between the absolute ages of the two diagenetic minerals holding the asphalt In between).
Determining the main oil and gas accumulation period time according to the absolute age of the host mineral rich in the hydrocarbon inclusion, wherein the absolute age of the host mineral rich in the hydrocarbon inclusion represents the main accumulation period time;
and reconstructing the oil and gas reservoir geological process based on the filling time, the cracking time and the main reservoir forming time of the crude oil.
Preferably, the thickness of the sample sheet a is 80 to 100 μm;
preferably, the thickness of the sample sheet B is 30 μm ± 5 μm;
preferably, the thickness of the sample sheet C is 80 to 100 μm;
preferably, the sample slice a has a diameter of 1.5-2.5 cm;
preferably, the sample slice B has a diameter of 1.5-2.5 cm;
preferably, the sample chip C has a diameter of 1.5 to 2.5 cm;
preferably, the preparing of at least 2 parallel samples corresponding to each representative rock sample separately, the preparing of the sample slice a, the sample slice B, and the sample slice C of the representative rock sample using the parallel samples and the remaining of the parallel sample residual part are performed by: cutting each representative rock sample into a cylinder with the diameter of 1.5-2.5cm and the thickness of 0.8cm, preparing 2 parallel samples along two sides of a section, preparing a sample slice A and a sample slice B from 1 parallel sample, preparing a slice C from the other 1 parallel sample, and reserving the residual part of the parallel samples for later use;
preferably, the mirror image similarity of the sample sheet a, the sample sheet B, and the sample sheet C is high.
In the above reconstruction method for geologic process of carbonate hydrocarbon reservoir, preferably, the isotope dating is performed using a laser in-situ U-Pb isotope dating mode. The laser in-situ U-Pb isotope dating technology can be carried out by using the laser U-Pb isotope dating technology disclosed in CN110376273A and CN111007141A, and is a carbonate mineral laser in-situ U-Pb isotope dating technology established by the improvement of LA-ICPMS equipment and the development of laboratory working standard samples.
The invention provides the technical scheme required to be protected by the invention and aims to solve the problems of low multi-solution, uncertainty and success rate in the geological process of reconstructing the ancient marine carbonate oil and gas reservoir by a geological comprehensive analysis method, an inclusion homogeneous temperature method and an ancient uplift and trap formation time method in the conventional carbonate oil and gas reservoir period determining mode. The technical scheme provided by the invention realizes the conversion of the research and judgment of the accumulation period from qualitative to quantitative and from single to multi-method comprehensive analysis by determining the absolute age of the host mineral containing the hydrocarbon inclusion body and the hydrocarbon filling and crude oil cracking time of the age measurement of the asphalt associated carbonate mineral, has finer reconstruction of the accumulation process, solves the problems of multiple solution, uncertainty and low detection success rate, and has important guiding significance for the understanding of the oil-gas enrichment rule of the domestic and even global ancient carbonate rock and the evaluation of the oil-gas enrichment area.
Drawings
Fig. 1 is a flowchart of a carbonate oil and gas reservoir geological process reconstruction method based on dating technology according to an embodiment of the present invention.
Fig. 2A is a dolostone sample of the seismic-denier system lamp shadow group of the sichuan basin in the embodiment of the invention.
Fig. 2B is a parallel sample diagram corresponding to a dolomite rock sample of the quasician seismic denier system lamp shade group in the embodiment of the invention.
FIG. 3 is a diagram of hydrocarbon inclusions in a sample slice A of a dolomite rock sample of the Szechwan basin seismic denier system lamp shade group in an embodiment of the invention.
Fig. 4A, 4B, and 4C are diagenetic sequence charts of dolostone-like bitumen and carbonate diagenetic minerals of the quasician seismic denier system denudate group in the embodiment of the invention.
Fig. 5A, 5B, 5C, and 5D are sample slices C of a dolomite rock sample of a quasician seismic denier system lamp shade group in an embodiment of the invention.
Fig. 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H and 6I are graphs of laser in-situ U-Pb isotope annual data of carbonate diagenetic minerals (dolomite minerals) in dolomite rock samples of the four-basin seismic denier system lamp shade group in an embodiment of the invention.
FIG. 7 is a diagram of a process of reconstructing an oil and gas reservoir based on the time constraints of a main reservoir period and the filling and cracking of crude oil for an ancient hump jordan system lamp shadow group gas reservoir in Chuan.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in detail and completely with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a carbonate oil and gas reservoir geological process reconstruction method based on dating technology, which is used for researching and reconstructing an oil and gas reservoir geological process for an ancient eminence and seismic denier system lamp shadow group gas reservoir development and reservoir period number in the Chuan and providing a basis for reservoir main control factor analysis and new favorable enrichment area evaluation, and as shown in figure 1, the method specifically comprises the following steps:
step S1: obtaining a work area representative rock sample; wherein the characteristic of the representative rock sample comprises pore and/or pore development, filling of carbonate diagenetic minerals at the periphery of the pore and/or pore, and filling of crude oil and/or bitumen in the pore and/or pore;
specifically, after the outcrop or core observation is carried out, a lamp shadow group microorganism dolomitic sample (as shown in figure 2A) with hole development, carbonate diagenetic minerals filled at the periphery of the hole and asphalt filled in the hole is selected, so that hydrocarbon inclusion rich in the dolomite diagenetic minerals can be better ensured, the obvious association and intersection relationship between the dolomite diagenetic minerals and the asphalt is ensured, and a diagenetic sequence between the asphalt and the dolomite diagenetic minerals is easy to establish;
step S2: respectively preparing at least 2 parallel samples corresponding to each representative rock sample of the obtained work area, preparing a sample slice A, a sample slice B and a sample slice C of the representative rock sample by using the parallel samples, and reserving the residual parts of the parallel samples;
specifically, each representative rock sample was cut into a cylinder having a diameter of 1.5 to 2.5cm and a thickness of 0.8cm, 2 parallel samples were prepared along both sides of the cut surface (parallel samples are shown in FIG. 2B), 1 of the parallel samples was used as a sample slice A (thickness 100 μm) and a sample slice B (thickness 30 μm), the other 1 was used as a sample slice C (thickness 100 μm), and the remainder of the parallel samples was kept for use;
step S3: carrying out mirror image relation consistency screening on the sample slice A, the sample slice B and the sample slice C of each representative rock sample;
specifically, a microscope is used for respectively observing the sample slice A, the sample slice B and the sample slice C of each representative rock sample in a mirror image relationship, if the similarity of the mirror image relationship of the sample slice A, the sample slice B and the sample slice C of a certain rock sample is high, the sample slice A, the sample slice B and the sample slice C of the certain rock sample are reserved, otherwise, the sample is removed;
step S4: screening rock samples for geological process reconstruction analysis of oil and gas reservoir in a work area;
specifically, hydrocarbon inclusion observation is carried out on a sample slice A of each rock sample, and the associated relation observation of carbonate diagenetic minerals and asphalt is carried out on a sample slice B, so that the rock sample which is rich in the hydrocarbon inclusion in the carbonate diagenetic minerals and has the associated relation of the carbonate diagenetic minerals and the asphalt is found and used as the rock sample for geological process reconstruction analysis of the oil-gas reservoir in the work area;
step S5: and (3) observing a sample slice A, a sample slice B, a sample slice C and a parallel sample residual part corresponding to the rock sample for reconstruction analysis of the geological process of the oil-gas reservoir in the work area under the microscope:
step S51: observing the sample slice A under a microscope, and determining the host mineral rich in the hydrocarbon inclusion in the sample slice A (shown in figure 3);
step S52: observing the sample slice B under a microscope, performing diagenetic sequence research on the asphalt and carbonate diagenetic minerals, establishing diagenetic sequences (shown in figures 4A-4C) of the asphalt and carbonate diagenetic minerals, and determining the carbonate diagenetic minerals associated with the asphalt in the sample slice B;
step S53: observing the sample slice C under a microscope, and defining a carbonate diagenetic mineral corresponding to the host mineral rich in the hydrocarbon inclusion determined in the sample slice A of the rock sample and a carbonate diagenetic mineral corresponding to the asphalt-associated carbonate diagenetic mineral determined in the sample slice B of the rock sample in the sample slice C (as shown in figures 5A-5D);
wherein the host mineral is a carbonate diagenetic mineral;
step S6: obtaining the absolute age of the host mineral enriched in hydrocarbon inclusions, the absolute age of the carbonate diagenetic mineral associated with the bitumen:
performing laser in-situ U-Pb isotope dating (according to the specifications and requirements of the carbonate mineral laser in-situ U-Pb isotope dating technology) on the carbonate diagenetic mineral corresponding to the host mineral rich in hydrocarbon inclusions identified in the sample slice A of the rock sample and the carbonate diagenetic mineral corresponding to the asphalt-associated carbonate diagenetic mineral identified in the sample slice B of the rock sample, which are identified in the sample slice C, to obtain the absolute age of the host mineral rich in hydrocarbon inclusions and the absolute age of the carbonate diagenetic mineral associated with asphalt (the results are shown in FIGS. 6A-6I);
step S7: determining the oil and gas main accumulation time:
the absolute age of the host mineral enriched in hydrocarbon inclusions represents the primary time of age;
step S8: determination of the time constraint oil-gas accumulation period of crude oil filling and cracking:
judging the charging and cracking time of the crude oil based on the diagenetic sequence of the asphalt and the carbonate diagenetic minerals and the absolute age of the measured carbonate diagenetic minerals associated with the asphalt; wherein the crude oil filling time is after the absolute age of the oldest carbonate diagenetic mineral before the asphalt in the periphery of the pores and/or holes (i.e. the crude oil filling time is after the absolute age of the oldest carbonate diagenetic mineral in the carbonate diagenetic minerals holding the asphalt), the crude oil cracking time is before the absolute age of the youngest carbonate diagenetic mineral after the asphalt in the periphery of the pores and/or holes (i.e. the crude oil cracking time is before the absolute age of the youngest carbonate diagenetic mineral in the carbonate diagenetic minerals holding the asphalt), and the crude oil filling and cracking time is between the absolute age of the youngest carbonate diagenetic mineral before the asphalt in the periphery of the pores and/or holes and the absolute age of the youngest carbonate diagenetic mineral after the asphalt in the periphery of the pores and/or holes (i.e. the crude oil filling and cracking time is between the absolute ages of the oldest carbonate diagenetic minerals holding the asphalt in the two phases Between pairs of ages);
step S9: and (3) geological process reconstruction of oil and gas reservoir:
and reconstructing the geological process of the oil and gas reservoir based on the time constraints of the main reservoir period and the time constraints of crude oil filling and cracking (the result is shown in figure 7, wherein the first-stage oil and gas reservoir is filled with the primary crude oil from the middle Otto age and reaches the peak period of the reservoir in the Zhixinji age, the second-stage oil and gas reservoir is filled with the secondary crude oil from the early second stack, the second-third stack reaches the peak period of the reservoir, the hydrocarbon can be continuously cracked for crossing to the middle and late third stacks, the third-stage natural gas reservoir peak period is the Yanshan period and can be continued to the Xishan period, and the above is the geological process of the ancient heaved-tented seismogram lamp shadow group oil and gas reservoir in the Chuan province.
Claims (11)
1. A carbonate oil and gas reservoir geological process reconstruction method based on dating technology is disclosed, wherein the method comprises the following steps:
obtaining a rock sample for geological process reconstruction and analysis of oil and gas reservoir in a work area, wherein the rock sample for geological process reconstruction and analysis of the oil and gas reservoir comprises the characteristics that hydrocarbon inclusion is rich in carbonate diagenetic minerals, and the carbonate diagenetic minerals and asphalt have associated relation;
determining host minerals rich in hydrocarbon inclusion in rock samples for geological process reconstruction analysis of the oil and gas reservoir, carrying out isotope year measurement to obtain the absolute age of the host minerals rich in hydrocarbon inclusion, wherein the obtained absolute age data represents the time of the main reservoir period of the oil and gas reservoir;
determining carbonate diagenetic minerals associated with the asphalt in the rock samples for geological process reconstruction analysis of the oil-gas reservoir, and carrying out isotope year measurement on the carbonate diagenetic minerals associated with the asphalt to obtain the absolute age of the carbonate diagenetic minerals associated with the asphalt, so as to determine the time for charging and cracking crude oil;
and reconstructing the geological process of the oil-gas reservoir based on the main reservoir period time of the oil-gas reservoir and the filling and cracking time of the crude oil.
2. The method of claim 1, wherein the obtaining a region hydrocarbon reservoir geological process reconstruction analysis rock sample comprises:
obtaining a work area representative rock sample; wherein the characteristic of the representative rock sample comprises pore and/or pore development, filling of carbonate diagenetic minerals at the periphery of the pore and/or pore, and filling of crude oil and/or bitumen in the pore and/or pore;
and respectively carrying out hydrocarbon inclusion observation and carbonate diagenetic mineral and asphalt association relation observation on each obtained rock sample, and selecting the rock sample which is rich in hydrocarbon inclusion in the carbonate diagenetic mineral and has association relation with the asphalt as the rock sample for reconstruction and analysis in the geological process of oil-gas reservoir formation in the work area.
3. The method of claim 1, wherein the determining a time for crude oil filling and cracking comprises:
carrying out diagenetic sequence research on the bituminous and carbonate diagenetic minerals by using the rock sample based on the geological process reconstruction analysis of the oil-gas reservoir, and establishing diagenetic sequences of the bituminous and carbonate diagenetic minerals;
judging the charging and cracking time of the crude oil based on the diagenetic sequence of the asphalt and the carbonate diagenetic minerals and the absolute age of the measured carbonate diagenetic minerals associated with the asphalt; wherein the filling time of the crude oil is after the absolute age of the oldest carbonate diagenetic mineral before the asphalt at the periphery of the pores and/or holes, the cracking time of the crude oil is before the absolute age of the youngest carbonate diagenetic mineral after the asphalt filled in the pores and/or holes, and the filling and cracking time of the crude oil is between the absolute age of the youngest carbonate diagenetic mineral before the asphalt at the periphery of the pores and/or holes and the absolute age of the youngest carbonate diagenetic mineral after the asphalt filled in the pores and/or holes.
4. The method according to claim 2, wherein the observation of hydrocarbon inclusions is performed using a sample slice a made of a rock sample; the thickness of the sample sheet A is 80 to 100. mu.m.
5. The method according to claim 3, wherein the sequence study of the formation of bituminous and carbonate diagenetic minerals is carried out using sample slices B made of rock samples; the thickness of the sample sheet B was 30 μm. + -. 5 μm.
6. The method according to claim 2, wherein the isotope dating is performed using sample slices C made of rock samples; the thickness of the sample chip C is 80 to 100 μm.
7. The method of claim 1, wherein the carbonate hydrocarbon reservoir geologic process reconstruction method comprises:
obtaining a work area representative rock sample; wherein the characteristic of the representative rock sample comprises pore and/or pore development, filling of carbonate diagenetic minerals at the periphery of the pore and/or pore, and filling of crude oil and/or bitumen in the pore and/or pore;
respectively preparing at least 2 parallel samples corresponding to each representative rock sample of the obtained work area, preparing a sample slice A, a sample slice B and a sample slice C of the representative rock sample by using the parallel samples, and reserving the residual parts of the parallel samples; wherein the thickness of the sample sheet A is 80-100 μm; the thickness of the sample slice B is 30 mu m +/-5 mu m; the thickness of the sample slice C is 80-100 μm;
for each obtained representative rock sample of the work area, observing a hydrocarbon inclusion of the sample slice A, observing an association relation between carbonate diagenetic minerals and asphalt of the sample slice B, and selecting the rock sample which is rich in the hydrocarbon inclusion and has the association relation between the carbonate diagenetic minerals and the asphalt as a rock sample for rebuilding and analyzing the geological process of the oil-gas reservoir of the work area;
carrying out diagenesis sequence research on the asphalt and carbonate diagenesis minerals on a sample slice B corresponding to the rock sample for reconstruction and analysis of the geological process of the oil-gas reservoir in the work area, and establishing diagenesis sequences of the asphalt and carbonate diagenesis minerals;
determining carbonate diagenetic minerals corresponding to host minerals rich in hydrocarbon inclusion in the sample slice A of the rock sample and carbonate diagenetic minerals corresponding to asphalt-associated carbonate diagenetic minerals in the sample slice B of the rock sample in the sample slice C corresponding to the rock sample for reconstruction analysis in the geological process of the oil-gas reservoir of the selected work area, and performing isotope year measurement to obtain the absolute age of the host minerals rich in hydrocarbon inclusion and the absolute age of the asphalt-associated carbonate diagenetic minerals;
judging the charging and cracking time of the crude oil based on the diagenetic sequence of the asphalt and the carbonate diagenetic minerals and the absolute age of the measured carbonate diagenetic minerals associated with the asphalt; wherein the filling time of the crude oil is after the absolute age of the oldest carbonate diagenetic mineral before the asphalt at the periphery of the pores and/or the holes, the cracking time of the crude oil is before the absolute age of the youngest carbonate diagenetic mineral after the asphalt filled in the pores and/or the holes, and the filling and cracking time of the crude oil is between the absolute age of the youngest carbonate diagenetic mineral before the asphalt at the periphery of the pores and/or the holes and the absolute age of the youngest carbonate diagenetic mineral after the asphalt filled in the pores and/or the holes;
determining the main oil and gas accumulation period time according to the absolute age of the host mineral rich in the hydrocarbon inclusion, wherein the absolute age of the host mineral rich in the hydrocarbon inclusion represents the main accumulation period time;
and reconstructing the geological process of the oil-gas reservoir based on the main reservoir period time of the oil-gas reservoir and the filling and cracking time of the crude oil.
8. The method of claim 7, wherein,
the diameter of the sample slice A is 1.5-2.5 cm;
the diameter of the sample slice B is 1.5-2.5 cm;
the sample chip C has a diameter of 1.5-2.5 cm.
9. The method of claim 7, wherein the separately preparing at least 2 parallel samples corresponding to each representative rock sample, and the preparing sample slices A, B, and C of the representative rock sample using the parallel samples and retaining the residual portions of the parallel samples is performed by: cutting each representative rock sample into cylinders with the diameter of 1.5-2.5cm and the thickness of 0.8cm, preparing 2 parallel samples along two sides of the section, preparing a sample slice A and a sample slice B from 1 parallel sample, preparing a slice C from the other 1 parallel sample, and reserving the residual part of the parallel samples for later use.
10. The method of claim 7, wherein the mirror image similarity of sample slice a, sample slice B, and sample slice C is not less than 90%.
11. The method of claim 1 or 7, wherein the isotope dating is performed using a laser in situ U-Pb isotope dating modality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022738.8A CN112881385B (en) | 2021-01-08 | 2021-01-08 | Carbonate oil-gas reservoir geological process reconstruction method based on dating technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022738.8A CN112881385B (en) | 2021-01-08 | 2021-01-08 | Carbonate oil-gas reservoir geological process reconstruction method based on dating technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112881385A true CN112881385A (en) | 2021-06-01 |
| CN112881385B CN112881385B (en) | 2023-02-10 |
Family
ID=76047247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110022738.8A Active CN112881385B (en) | 2021-01-08 | 2021-01-08 | Carbonate oil-gas reservoir geological process reconstruction method based on dating technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112881385B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117826247A (en) * | 2024-01-06 | 2024-04-05 | 中国地质科学院地质力学研究所 | Carbonate rock oil-gas reservoir geological process reconstruction method |
| WO2024087867A1 (en) * | 2022-10-27 | 2024-05-02 | 中国石油天然气股份有限公司 | Characterization method for in-situ openability of deep tectonic fissure, and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323924A (en) * | 2016-08-09 | 2017-01-11 | 西安石油大学 | Method for determining oil and gas reservoir-forming age |
| US20190055842A1 (en) * | 2017-08-15 | 2019-02-21 | Saudi Arabian Oil Company | Identifying oil and gas reservoirs with oxygen isotopes |
| CN111749679A (en) * | 2020-07-06 | 2020-10-09 | 宋立才 | Method and device for determining shale gas reservoir enrichment time node |
-
2021
- 2021-01-08 CN CN202110022738.8A patent/CN112881385B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323924A (en) * | 2016-08-09 | 2017-01-11 | 西安石油大学 | Method for determining oil and gas reservoir-forming age |
| US20190055842A1 (en) * | 2017-08-15 | 2019-02-21 | Saudi Arabian Oil Company | Identifying oil and gas reservoirs with oxygen isotopes |
| CN111749679A (en) * | 2020-07-06 | 2020-10-09 | 宋立才 | Method and device for determining shale gas reservoir enrichment time node |
Non-Patent Citations (3)
| Title |
|---|
| 刘晓丽: "辽河西部凹陷雷家地区湖相碳酸盐岩流体充注期次", 《断块油气田》 * |
| 王杰等: "海相油气成藏定年技术及其对元坝气田长兴组天然气成藏年代的反演", 《地球科学》 * |
| 肖娟娟等: "油气成藏时间研究方法综述", 《内蒙古石油化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087867A1 (en) * | 2022-10-27 | 2024-05-02 | 中国石油天然气股份有限公司 | Characterization method for in-situ openability of deep tectonic fissure, and storage medium |
| CN117826247A (en) * | 2024-01-06 | 2024-04-05 | 中国地质科学院地质力学研究所 | Carbonate rock oil-gas reservoir geological process reconstruction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112881385B (en) | 2023-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Cao et al. | Geochemical characteristics of crude oil from a tight oil reservoir in the Lucaogou Formation, Jimusar sag, Junggar Basin | |
| Hill et al. | Uplift and thermal history of the Papuan Fold Belt, Papua New Guinea: Apatite fission track analysis | |
| Abrams et al. | Oil families and their potential sources in the northeastern Timan Pechora Basin, Russia | |
| Yahi et al. | Petroleum generation and accumulation in the Berkine basin, eastern Algeria | |
| CN112881385B (en) | Carbonate oil-gas reservoir geological process reconstruction method based on dating technology | |
| Gottardi et al. | Characterization of the natural fracture system of the eagle ford formation (Val Verde County, Texas) | |
| CN107389648B (en) | A kind of identification of 3-D quantitative fluorescent characteristics peak and fluid type judgment method | |
| CN107102377B (en) | The method of quantitative forecast tight sand favorable oil/gas exploration area | |
| Wang et al. | Stratigraphic thermohistory and its implications for regional geoevolution in the Tarim Basin, NW China | |
| CN108956952A (en) | The prediction technique and exploitation method of mud shale series of strata reservoir geology dessert between salt | |
| Liu et al. | Temperature and pressure characteristics of Ordovician gas condensate reservoirs in the Tazhong area, Tarim Basin, northwestern China | |
| CN105257285A (en) | Evaluation method of oil gas filling capacity from source rock layer to karstic reservoir | |
| Hou et al. | Identification of oil produced from shale and tight reservoirs in the Permian Lucaogou Shale sequence, Jimsar Sag, Junggar Basin, NW China | |
| Moore et al. | Integrated source, maturation and migration analysis, Gippsland Basin, Australia | |
| Lou et al. | Characteristics of fluid inclusions and hydrocarbon accumulation period of Huoshiling-Yingcheng Formations in Wangfu fault depression, Songliao Basin, China | |
| Deng et al. | Ahdeb oil field, Mesopotamian Basin, Iraq: Reservoir architecture and oil charge history | |
| Hongtao | Accumulation process and pattern of oolitic shoal gas pools in the platform: A case from Member 3 of Lower Triassic Feixianguan Formation in the Heba area, northeastern Sichuan Basin | |
| CN111622751B (en) | Shale gas dessert evaluation method based on gas carbon isotopes | |
| Wang | Lacustrine shale gas: case study from the ordos basin | |
| Crossey et al. | Authigenic mineralogy of sandstones intercalated with organic-rich mudstones: integrating diagenesis and burial history of the Mesaverde Group, Piceance Basin, NW Colorado | |
| Ozkaya | Modeling finite-fracture networks in a partially fractured reservoir in the Middle East | |
| CN112304839B (en) | Timed and quantitative carbonate rock formation-pore evolution recovery method | |
| Lavoie et al. | Natural-gas potential in the St. Lawrence Lowlands of Québec: A case study | |
| CN113109891A (en) | Method for reconstructing evolution history of geologic fluid in sedimentary basin | |
| CN112304942B (en) | Method for determining oil and gas reservoir time based on annual measurement of carbonate diagenetic minerals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |