CN114635681A - Construction method for sand body structure of front edge of thick-layer braided river delta with high sand-land ratio - Google Patents
Construction method for sand body structure of front edge of thick-layer braided river delta with high sand-land ratio Download PDFInfo
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Abstract
The invention discloses a construction method of a sand body structure at the front edge of a thick-layer braided river delta with a high sand-land ratio. The method comprises the following steps: establishing a superposed relation between a sedimentary pattern and a sedimentary sand body according to field outcrop, well logging curve and well drilling coring data analysis; according to slice observation, combining with indoor experimental analysis and test, knowing the characteristics of porosity and permeability of the sandstone layer section; combining macroscopic field profile observation, well drilling coring section observation, rock slice identification and physical property experiment data, establishing and identifying each grade of sand body configuration interface, carrying out configuration interface identification and division on a single well coring interval, establishing a coring well section sand body configuration interface characteristic identification and division scheme, establishing a correlation between the coring well section sand body configuration and a logging curve, carrying out sand body configuration division on a whole well interval, combining the data, establishing a five-grade sand body configuration division scheme which takes phase control as a main part and deposition cycle and physical property control as an auxiliary part, and developing sand body configuration division and construction work according to the scheme.
Description
Technical Field
The invention relates to the technical field of oil-gas exploration and development of clastic rocks, in particular to a method for constructing a sand body structure of a front edge of a braided river delta in a high sand-land ratio thick layer.
Background
With the development and progress of exploration and development technology, the development of oil and gas reservoirs at home and abroad is mainly gradually shifted to the fields of unconventional oil and gas, deeper and more refined development and the like. A series of large oil and gas fields put into production and developed at an early stage begin to enter the middle and later stages of development, and the continuous excavation of the oil and gas exploration and development potential is the central importance of the research of oil and gas reservoirs. Therefore, fine characterization and study of reservoirs in hydrocarbon reservoirs is also of increasing importance.
For sandstone reservoir oil and gas reservoirs, sandstone strata are used as main reservoir strata and are of great importance to the exploration and development of the oil and gas reservoirs. The deposition phase refers to different deposition environments and deposition products, and different deposition substances can develop in different deposition phases. The delta sediment body is an excellent oil and gas reservoir, the sand body at the front edge of the braided river delta is well sorted, pores are developed, the sand body scale is large, and the delta sediment body is an excellent oil and gas reservoir. The sand body of the reservoir is controlled by the deposition micro-phase, the scale and the occurrence of the sand body are greatly changed, meanwhile, oil gas is often enriched in the sand body, the physical properties of different sand body configurations are different, and the oil gas enriched in the reservoir can be controlled. Thus, sand body configuration is often the primary goal of fine delineation of hydrocarbon reservoirs for sandstone-type reservoirs.
The key of the sand body configuration construction is the division of different-level configuration interfaces. Characteristics of sand bodies in form and space distribution are researched through configuration units of different periods, and three-dimensional modeling and oil gas prediction can be guided. The existing commonly used sand body configuration research methods comprise modern river and field outcrop actual measurement, well logging data analysis, well seismic combination and the like, but only the research method of the meandering river is mature and complete, the research of the braided river delta still has a large dispute, and an original model and configuration classification are not unified. And is limited by the problems of ambiguity and quality of seismic and well logging data, so that the division of coverage area construction bodies has larger uncertainty.
Disclosure of Invention
The invention provides a construction method of a high sand ratio thick layer braided river delta front edge sand body structure aiming at the defects of the prior art, and the construction method can be used for depicting and constructing the high sand ratio braided river delta front edge sand body structure.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
a construction method of a sand body structure of a front edge of a thick-layer braided river delta in a high sand ratio comprises the following steps:
first, field section observation. The lithology and the sedimentary facies of the research area are observed and identified through a field profile, the superposition relationship between the lithology interface and the sedimentary facies among all layers is integrally known, the superposition relationship among sand bodies is determined, and the sedimentary facies of the research area is macroscopically mastered;
and secondly, observing the core of the core well. By observing the core of the core well, judging and identifying the lithology, sedimentary microfacies, sedimentary structures and sedimentary gyrus of the core section, and identifying and depicting the combination of the sedimentary gyrus and the lithology according to the observation picture and record of the core well section.
Thirdly, sampling, and carrying out indoor experimental analysis and research, wherein the method comprises the following specific steps:
1) sampling the core well section;
2) carrying out the manufacture of common slices, casting slices and large slices, the manufacture of rock samples of a scanning electron microscope and the manufacture of chemical analysis samples on samples;
3) carrying out slice identification (common rock slices), cathodoluminescence (cathodoluminescence microscope analysis technology), laser confocal (laser confocal microscope analysis technology), scanning electron microscope (scanning electron microscope), whole rock component analysis experiments and carbon-oxygen isotope experiments on various experimental samples according to the prior art standards;
4) according to the experimental data, carrying out particle size analysis, component identification, structural analysis, storage space analysis, paleo-environment, paleo-climate and paleo-geography analysis;
5) and summarizing rock microscopic characteristics of the coring well section according to the experimental data and the analysis result.
And fourthly, establishing a sand body configuration division scheme of the core well section.
Identifying a configuration interface according to the second-step coring well section deposition cycle engraving and the third-step coring well section sand body configuration microscopic features, and establishing a coring well section configuration division scheme;
fifthly, establishing a whole well section sand body configuration division scheme
Analyzing the sand body configuration of the core well section and the response relation of the logging curve, the logging lithology and the combination characteristic according to the sand body configuration division scheme of the core well section in the fourth step; according to the response relation, establishing a configuration division scheme of the full well section sediment sand body; the method comprises the following specific steps:
1) comparing the logging curve characteristics of the coring well section according to the coring well section sand body configuration division scheme established in the fourth step;
2) summarizing corresponding characteristics of the logging curve of the core well section according to the response relation of the configuration characteristics of the core well section and the characteristics of the logging curve;
3) establishing a full-well section configuration division scheme according to the well logging curve removing characteristics;
sixthly, carrying out sand body configuration division according to the full well section sand body configuration division scheme established in the fifth step;
seventhly, constructing a sand body structure;
and on the basis of the sixth step of single-well sand body configuration division, leveling the multiple single wells to establish a well-connecting comparison diagram. According to the first step and the second step, well-connecting profile deposition cycle is established. And according to the sand body configuration division results of the fifth step and the sixth step, dividing sand bodies with different levels of configurations in the comparison graph to complete the vertical and horizontal construction of the sand body configuration.
Further, the specific steps of field profile observation in the first step are as follows:
1) identifying lithological combinations and strata according to field outcrop observation;
2) according to lithological characteristics observed in the field, dividing sedimentary facies and recognizing sedimentary patterns;
3) and identifying the stacking relation and lithologic interface of the sedimentary sand bodies according to the sedimentary facies belt change.
Furthermore, in the second step, the combination of the deposition cycle and the lithology is identified and described, and the specific steps are as follows:
1) dividing sand bodies meeting the following characteristics into single underwater diversion river sedimentation cycle: the single underwater diversion river sedimentation cycle is characterized by a coarse lower part and a fine upper part in granularity, lithology from bottom to top is a sediment structure of a medium sandstone, a fine sandstone, a siltstone, a argillaceous siltstone, a development parallel layer, a block layer and a scouring surface containing mud gravel, sorting is mostly medium, the roundness is a minor edge angle, and the contact relation is mainly linear contact. On the logging curve, a bell shape or the superposition of bell shapes which gradually draw close to a high value from bottom to top is mostly expressed, and the interface with the underlying and overlying gyroids is a flushing surface and a lithologic interface;
2) and (3) rotating the sand body division single estuary dam deposition which meets the following characteristics: the single estuary dam deposition cycle shows a reverse rhythm with fine bottom and coarse top in granularity, the lithology is argillaceous siltstone, fine sandstone and rock types mainly including detritus feldspar sandstone, the separation is better, the rounding mainly adopts a secondary edge angle shape, and the line contact and point contact relation is common. The well logging curve shows that the well logging curve is a funnel type or a stack of funnel types which gradually get close to a low value from bottom to top, the development and the stratification are staggered, and the well logging curve and the underlying and overlying gyroid interfaces are lithologic interfaces generally.
Further, the step of identifying the configuration interface in the fourth step is as follows:
dividing a sedimentary phase interface into I-level configuration interfaces;
dividing the deposition sub-phase interface into a II-level configuration interface;
thirdly, dividing the deposition micro-phase interface into a III-level configuration interface;
fourthly, dividing the single microphase deposition cycle interface identified in the second step into an IV-grade configuration interface;
and fifthly, dividing the physical property interface identified by the third step of coring well section sample analysis data into a V-level configuration interface.
Further, the establishing step of the configuration partitioning scheme of the coring well section in the fourth step is as follows:
firstly, identifying different-level configuration interfaces according to the configuration interface identification standard;
dividing the coring well section sand body divided by the I-level interface into I-level configuration sand bodies which represent composite sand bodies controlled by different sedimentary phases;
thirdly, dividing the coring well section sand body divided by the level II interface into level II configuration sand bodies representing different deposition sub-phase control composite sand bodies;
dividing the coring well section sand body divided by the grade III interface into grade III configuration sand bodies representing different deposition micro-phase control composite sand bodies;
dividing the sand body of the coring well section divided by the IV-level interface into IV-level configuration sand bodies which represent different sand body rotary sand body combinations;
dividing the coring well section sand body divided by the V-level interface into V-level configuration sand bodies representing different physical property sand bodies in the same deposition cycle.
Further, in the fifth step, a full-wellbore section configuration partitioning scheme is established, and the specific steps are as follows:
taking the characteristics of the I-level configuration sand body of the coring section identified in the fourth step as the basis for dividing the I-level configuration sand body of the whole well section;
secondly, the characteristics of the core section II-level configuration sand body identified in the fourth step are used as the basis for dividing the whole well section II-level configuration sand body;
thirdly, taking the characteristics of the core-taking section III-grade structured sand body identified in the fourth step as the basis for dividing the whole well section III-grade structured sand body;
fourthly, taking the characteristics of the IV-grade sand body of the core section identified in the fourth step as the basis for dividing the IV-grade sand body of the whole well section;
and fifthly, taking the characteristics of the V-level configuration sand body of the coring section identified in the fourth step as the basis for dividing the V-level configuration sand body of the whole well section.
Further, the grade iv sand body is specifically classified as follows:
the GR curve box type, the tooth box type wide finger type, the resistivity curve box type, the sand body with the porosity and the permeability which are integrally reduced upwards are divided into main river channel sand bodies;
dividing the sand body with the GR curve smooth bell shape, the resistivity curve funnel shape and the porosity and permeability which are integrally reduced upwards into single river channel sand bodies;
dividing the sand body with GR curve tooth box type + bell type, resistivity curve bell type, porosity and permeability which are gradually decreased upwards into multi-river channel sand bodies;
dividing the sand body with the GR curve smooth funnel shape, the resistivity curve funnel shape and the porosity and permeability which are integrally and upwards increased into the sand body of the single estuary dam;
and dividing the sand body with the GR curve toothed funnel bell shape, the resistivity curve box shape and the porosity and the permeability which are gradually increased upwards into a multi-estuary dam sand body.
Further, the configuration division of the expanded sand body in the sixth step comprises the following specific steps:
1) dividing sand bodies which accord with the characteristics of the I-grade structured sand bodies in the fifth step into I-grade structured sand bodies;
2) dividing sand bodies which accord with the characteristics of the second-level configuration sand bodies in the fifth step into second-level configuration sand bodies;
3) dividing sand bodies which accord with the characteristics of the III-grade structured sand bodies in the fifth step into III-grade structured sand bodies;
4) dividing sand bodies which accord with the characteristics of the IV-grade structured sand bodies in the fifth step into IV-grade structured sand bodies;
5) and dividing the sand bodies meeting the characteristics of the V-grade configuration sand bodies in the fifth step of dividing scheme into V-grade configuration sand bodies.
Compared with the prior art, the invention has the advantages that:
the invention has a clearer and more definite carving scheme for carving the high sand-land ratio and thick sand body, has clearer understanding on the heterogeneity of the sand body, and has better guiding significance for oil-gas exploration and development and comprehensive treatment. The method starts from a sedimentary facies, combines macroscopic and microscopic characteristics, is assisted by a logging curve, gives consideration to the configuration actual data foundation and the feasibility of a division scheme, and can be used for macroscopically controlling a sand body sedimentary background by a field section outcrop; the core well section sediment cycle identification can accurately grasp the combination characteristics of the single-stage sediment sand body interface and the lithology; the microscopic analysis technology has clear recognition on the microscopic characteristics of the deposited sand body and further defines the heterogeneity of the sand body; according to the response relation between the logging curve and the sand body configuration division scheme of the core well section, the feasibility of the sand body configuration division scheme of the whole well is improved. Meanwhile, the sedimentary facies controls the lithology, the scale, the pore and the physical properties of the sedimentary sand body, so that the sand body configuration division scheme which mainly controls the facies and assists the sedimentary convolution and the physical property control has higher operability, practicability and guiding significance on oil and gas exploration, oil and gas accumulation, oil and gas migration and later-stage oil and gas reservoir comprehensive treatment.
Drawings
FIG. 1 is a flow chart of a method for depicting a sand body configuration at the front edge of a thick high sand-ground ratio braided river delta according to an embodiment of the invention;
FIG. 2 is a sand body configuration diagram of a cored interval according to an embodiment of the present invention;
FIG. 3 is a full interval sand configuration diagram of an embodiment of the present invention;
FIG. 4 is a sand configuration diagram of an embodiment of the present invention;
FIG. 5 is a comparison of sand body configurations for embodiments of the present invention;
figure 6 is a plan view of a sand body configuration according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings by way of examples.
In the embodiment of the disclosure, taking a chalky basque group of a depressed deep region of a garage and an ancient soviet group sandstone reservoir as examples, two stratums are braided river delta leading edge subphase sediment sands, and the stratums are in parallel non-integrated contact. In the embodiment of the disclosure, taking the above as an example, a sand body configuration division scheme and characteristics which mainly control phase and assists deposition cycle and physical property control are established, and the deposition control pattern and the sand body are overlapped based on field profile recognition; dividing the sand body configuration of the core well section based on the core well section drilling and sampling micro analysis and establishing a core well section sand body configuration division scheme; and establishing a sand body configuration division scheme of the whole well section based on the corresponding relation of the configuration division of the coring well section and the combination of the logging curve and the logging lithology, and finishing the sand body configuration division. Starting from practical actual data, the problem of actual data shortage is avoided, the reliability of the sand body configuration division basis and the feasibility of the sand body configuration division scheme are greatly improved, and the method has important significance on fine depiction of sand body configurations of sandstone reservoirs, fine development of sandstone-type oil and gas reservoirs and the distribution migration rule of the oil and gas reservoirs.
As shown in fig. 1, the method for depicting the sand body configuration of the front edge of the thick-layer high-sand ratio braided river delta comprises the following steps:
first, field section observation. The lithology and the sedimentary facies of the research area are observed and identified through a field profile, the superposition relationship between the lithology interface and the sedimentary facies among all the stratums is integrally known, the superposition relationship among sand bodies is determined, and the sedimentary facies of the research area is macroscopically mastered;
the specific path of the step is as follows:
identifying lithological combinations and strata according to field outcrop observation;
according to lithological characteristics observed in the field, dividing sedimentary facies and recognizing sedimentary patterns;
identifying a sedimentary sand body superposition relation and a lithologic interface according to sedimentary phase belt change;
in an embodiment of the disclosure, the field profile exposure location is located in the northern mountain zone of the garage depression, and the sedimentary formations are the chalky baschiky group, the ancient soviey group, and the recent gigadic group.
The ancient system of Suviey group bottom sandstone segments belonging to a plait river delta sedimentary system is identified in the field, and the ancient system of Suviey group bottom sandstone segments comprises an underwater diversion river channel, an estuary dam and a diversion bay microphase. The sandstone type is mainly rock debris feldspar sandstone and feldspar rock debris sandstone. The sand body of the Suviey group has good physical property and weak heterogeneity, the longitudinal superposition of the sand body is mainly superposed by an underwater diversion river channel, the river mouth dam is less, and the transverse superposition relationship is mainly in a side-cutting type and an isolated type;
the chalky basky kirk group sandstone section is a braided river delta sedimentation system, has short carrying distance, mainly develops a braided river delta leading edge subphase, and further can be divided into an underwater diversion river channel, an estuary dam and a diversion bay microphase. The underwater diversion riverway sediment mainly comprises marmite and sandstone. The river bed retention deposition appears at the bottom of the river bed, mainly takes mud and gravel deposition as main materials, and is in erosion scouring contact with the underlying stratum, the lower bedding type mainly comprises groove-shaped staggered bedding and plate-shaped staggered bedding, and the parallel bedding or inclined bedding is developed upwards. The fine sandstone and the siltstone with the water flow sand grain layer structure on the top of the river channel gradually change into brownish red or dark green mudstone upwards to form a river channel layer sequence which becomes thin upwards. The diversion bay microphase sediments are fine in granularity and mainly comprise mudstone, argillaceous siltstone and siltstone. The sedimentary structure mainly comprises small staggered bedding, horizontal bedding and blocky bedding, and the lithology mainly comprises brownish red mudstone and argillaceous siltstone. In the period of Bash foundation Qike group, the advance and retreat of lake water of a northern lake basin are frequent, the sand bodies of delta are mutually scoured, cut and overlapped, the structure movement is strong, the river flow is short, the fall is large, and the lateral migration of the river channel is more frequent, so the situation of the lateral overlapping of the sand bodies of the river channel is also complex, the sand bodies are overlapped frequently in the longitudinal direction, and the main river channels of the underwater diversion river channels are mutually overlapped, the secondary river channels of the underwater diversion river channels are overlapped, the main river channel and the secondary river channels are overlapped, the underwater diversion river channels and the estuary dam are overlapped, and the single underwater diversion river channel is mainly used; the transverse direction is mainly isolated, contact and side-cutting.
And secondly, observing the core of the core well. By observing the core of the core well, judging and identifying lithology, sedimentary microfacies, sedimentary structures, sedimentary gyrus and the like, and finely depicting combinations of sedimentary gyrus and lithology;
the specific path of the step is as follows:
carrying out detailed observation and depiction on the core of the core well, and identifying the lithology, sedimentary microfacies, sedimentary structures and sedimentary gyrus of a core section;
according to the observation result and record of the coring well section, the combination of the sedimentary gyrus and lithology is finely described;
in the disclosed embodiment, the coring well section sedimentary microfacies identify that the ancient system suviayi group bottom sandstone section belongs to a plait river delta sedimentary system and consists of underwater diversion river channels, estuary dams and diversion bay microfacies. The sandstone type is mainly rock debris feldspar sandstone and feldspar rock debris sandstone. The sand body of the Suviyi group has better physical property and weak heterogeneity;
the chalky basky kirk group sandstone section is a braided river delta sedimentation system, has short carrying distance, mainly develops a braided river delta leading edge subphase, and further can be divided into an underwater diversion river channel, an estuary dam and a diversion bay microphase. The underwater diversion riverway sediment mainly comprises marmite and sandstone. The bedding types mainly include groove-shaped staggered bedding, plate-shaped staggered bedding, parallel bedding, inclined bedding and water flow sand texture bedding. The diversion bay microphase sediments are fine in granularity and mainly comprise mudstone, argillaceous siltstone and siltstone. The sedimentary structure mainly comprises small-sized staggered bedding, horizontal bedding and blocky bedding, and the lithology mainly comprises red brown mudstone and argillaceous siltstone.
And thirdly, sampling and carrying out indoor experimental analysis and research. The method comprises the steps of rock slice manufacturing (such as common slices, casting slices, large slices and the like), rock sample manufacturing of a scanning electron microscope, chemical analysis sample manufacturing and the like, and the method comprises the steps of carrying out microscale analysis on a rock core by methods such as slice identification, cathodoluminescence, laser confocal, a scanning electron microscope, a whole-rock component analysis experiment, a carbon-oxygen isotope experiment and the like, such as granularity analysis, component identification, structural analysis, reservoir space analysis, an ancient environment, an ancient climate, an ancient geographic analysis and the like, so as to clearly determine configuration division microscopic basis and various configuration sand body microscopic characteristics;
the specific path of the step is as follows:
sampling the cored well section;
carrying out common slice, casting slice manufacturing, scanning electron microscope rock sample manufacturing, chemical analysis sample manufacturing and the like on a sample;
carrying out slice identification, cathodoluminescence, laser confocal, scanning electron microscopy, whole rock composition analysis experiments and carbon-oxygen isotope experiments on various experimental samples according to the existing standards;
carrying out granularity analysis, component identification, structure analysis, storage space analysis, ancient environment, ancient climate and ancient geography analysis according to the results;
according to the experimental data and the analysis result, defining the micro-characteristics of the sand body configuration of the coring well section;
in the embodiment of the disclosure, the work of thin slice analysis and identification, cathode luminescence, laser confocal, scanning electron microscope and the like is carried out on more than 90 samples of the coring well section, and the main lithology of the suaviyi group is identified to be mainly the feldspathic sandstone containing the pasty rock debris; the chalk-based baschique group is based on the rock debris feldspar sandstone.
And fourthly, dividing the configuration of the core well section. And carrying out sand body configuration division on the coring well section, and establishing a sand body configuration scheme of the coring well section.
The specific path of the step is as follows:
establishing a coring well section sand body configuration division scheme according to the coring well section sand body configuration characteristics in the third step;
carrying out configuration division on the coring well section according to the configuration scheme;
in the embodiment of the present disclosure, as shown in fig. 2 and table 1, the sand body configuration of the coring well section is divided, taking the near system soviet group coring section as an example, the soviet group sand body configuration is considered to be mainly phased, deposition cycle and physical property control as assistance; the deposition phase of the suviet group is a braided river delta phase, the subphase is a braided river delta leading edge subphase, the microphase is mainly of an underwater diversion river channel, and a small amount of estuary dam microphase and diversion bay microphase can be seen; therefore, the sand body configuration of the core section of the Soviet group can be divided into five grades:
i-level structural sand body: the suviet group is a composite sedimentary sand body controlled by a braided river delta.
Grade II sand body: the suviet group is a composite sedimentary sand body controlled by the front edge subphase of the trigonal river.
Grade III sand body: the Suviey group is a composite deposited sand body controlled by underwater diversion river channel microphase and estuary dam microphase.
IV-grade structured sand body: the Suviey group is an underwater diversion river channel main river channel superposed sand body, a single underwater diversion river channel sand body and a plurality of sets of underwater diversion river channel superposed sand bodies in underwater diversion river channel microphase sand bodies; the sand body of the single estuary dam and the superposed sand bodies of the multiple estuary dams are arranged under the microphase sand body of the estuary dam.
V-level structural sand body: the Suviyi group is a single-stage underwater diversion river channel sand body and a single-stage secondary estuary dam sand body.
The method mainly divides the III-V grade sand body, and the rest is mainly based on the division of the sedimentary facies.
TABLE 1 coring interval sand body configuration division scheme table
Fifthly, according to the sand body configuration division result of the coring well section, carrying out research on combination response relation of the coring sand body configuration, a single well logging curve and logging lithology, and establishing a whole well section sand body configuration division scheme;
the specific path of the step is as follows:
analyzing the sand body configuration of the core well section and the response relation of a logging curve, logging lithology and combination characteristics according to the sand body configuration division result of the core well section;
establishing a configuration division scheme of the sand sediment bodies in the whole well section according to the response relation;
in the embodiment of the disclosure, according to the sand structure division result of the coring well section, as shown in table 2, research on the combination response relationship between the coring sand structure and a single well logging curve and logging lithology is carried out, and the interface identification characteristic of the five-level sand structure is established;
table 2 sand body configuration interface table
Interface of sand body configuration
The I, II and III level structure interfaces are a phase interface, a sub-phase interface and a micro-phase interface in sequence, the IV level structure interface is a single cycle interface under the control of a micro-phase, and the V level structure interface is controlled by a physical property interface between single sand bodies. The relationship of the configuration interface, the sand body, the interface type and the identification is as follows:
stage i configuration: phase-controlled composite sedimentary sand body-sedimentary phase interface-sedimentary environment and sedimentary characteristics;
stage II configuration: phase-controlled composite type sedimentary sand body-sedimentary subphase interface-sedimentary environment and sedimentary characteristics;
stage III configuration: phase control composite type sedimentary sand body-sedimentary microphase interface-sedimentary environment and sedimentary characteristics;
stage iv configuration: the superposition relationship of the single microphase composite sand body-sand body gyrus interface-sand body gyrus combination and the sand body;
stage V configuration: a single sand body-single sand body physical property interface-single sand body seepage channel and a seepage barrier;
and establishing a whole well section sand body configuration division scheme. In the disclosed embodiment, as shown in table 2,
according to the sand body configuration division result of the coring well section, establishing a five-level sand body configuration division scheme:
i-level structural sand body: the soviet group and the baschique group are the composite sedimentary sand body controlled by the braided river delta.
Grade II sand body: the soviet group and the baschike group are composite sedimentary sands controlled by the frontal subphase of the trigonal river.
Grade III sand body: the Suviey group and the Paschiki Kirschner group are composite deposited sand bodies controlled by underwater diversion river channel microphase and estuary dam microphase.
Grade IV sand body: the Suviey group and the Pashi-base kirk group are the superposed sand bodies of the main underwater shunt riverway, a single underwater shunt riverway sand body and a plurality of sets of superposed sand bodies of the underwater shunt riverway in the microphase sand bodies of the underwater shunt riverways; the sand body of the single estuary dam and the superposed sand bodies of the multiple estuary dams are arranged under the microphase sand body of the estuary dam.
V-level structural sand body: the Suviey group and the Paschiki King group are single-stage sub-underwater diversion river channel sand bodies and single-stage sub-estuary dam sand bodies.
And sixthly, carrying out single-well whole-well section configuration division.
The specific path of the step is as follows:
carrying out sand body configuration division by combining the logging curve characteristics and the logging lithology characteristics according to the full-well section sand body configuration division scheme established in the fifth step;
establishing a whole well section sand body configuration division scheme;
in the disclosed embodiment, as shown in fig. 3, a single-well whole-interval sand body configuration characterization is carried out according to the sand body configuration scheme established in the sixth step. The single well sand body configuration is characterized in that the IV-V grade sand body configuration is mainly used as the main configuration, and the sand body configuration is divided according to the fact that a physical property interface in the sand body is a sand body configuration interface. And a sand configuration pattern at different sedimentary phases was established as shown in fig. 4.
And seventhly, carrying out sand body configuration division and construction. According to the single-well sand body configuration scheme, the sand body configuration of all single wells in the whole area is carved in detail, and finally the sand body configuration is constructed.
In the embodiment of the present disclosure, as shown in table 3, sand body configuration partitioning of all single wells is performed according to an established partitioning scheme, after sand body configuration partitioning of all single wells is completed, comparison of research on sand body configurations of connected wells is started according to a single well partitioning result, as shown in fig. 5, and then, according to different horizons, with sand body configurations of single wells as control points, plane partitioning of sand body configurations is performed, as shown in fig. 6.
Table 3 sand body configuration division scheme table
It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner in which the invention is practiced, and it is to be understood that the scope of the invention is not limited to such specifically recited statements and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (8)
1. A construction method for a sand body structure of a front edge of a thick-layer braided river delta with a high sand ground ratio is characterized by comprising the following steps:
firstly, observing a field section; the lithology and the sedimentary facies of the research area are observed and identified through a field profile, the superposition relationship between the lithology interface and the sedimentary facies among all the stratums is integrally known, the superposition relationship among sand bodies is determined, and the sedimentary facies of the research area is macroscopically mastered;
secondly, observing a core of the core well; by observing the core of the core well, judging and identifying the lithology, sedimentary microfacies, sedimentary structures and sedimentary gyrus of the core section, and identifying and depicting the combination of the sedimentary gyrus and the lithology according to the observation picture and record of the core well section;
thirdly, sampling, and carrying out indoor experimental analysis and research, wherein the method comprises the following specific steps:
1) sampling the core well section;
2) carrying out the manufacture of common slices, casting slices and large slices, the manufacture of rock samples of a scanning electron microscope and the manufacture of chemical analysis samples on samples;
3) carrying out slice identification, cathodoluminescence, laser confocal, scanning electron microscopy, whole rock composition analysis experiments and carbon-oxygen isotope experiments on various experimental samples according to the prior art standard;
4) according to the experimental data, carrying out particle size analysis, component identification, structural analysis, storage space analysis, paleo-environment, paleo-climate and paleo-geography analysis;
5) summarizing rock microscopic characteristics of the coring well section according to the experimental data and the analysis result;
fourthly, establishing a sand body configuration division scheme of the core well section;
identifying a configuration interface according to the second-step coring well section deposition cycle engraving and the third-step coring well section sand body configuration microscopic features, and establishing a coring well section configuration division scheme;
fifthly, establishing a whole well section sand body configuration division scheme
Analyzing the sand body configuration of the core well section and the response relation of the logging curve, the logging lithology and the combination characteristic according to the sand body configuration division scheme of the core well section in the fourth step; according to the response relation, establishing a configuration division scheme of the full well section sediment sand body; the method comprises the following specific steps:
1) comparing the logging curve characteristics of the coring well section according to the coring well section sand body configuration division scheme established in the fourth step;
2) summarizing corresponding characteristics of the logging curve of the core well section according to the response relation of the configuration characteristics of the core well section and the characteristics of the logging curve;
3) establishing a full-well section configuration division scheme according to the well logging curve removing characteristics;
sixthly, carrying out sand body configuration division according to the full well section sand body configuration division scheme established in the fifth step;
seventhly, constructing a sand body structure;
on the basis of the sixth step of single-well sand body configuration division, leveling the multiple single wells, and establishing a well-connecting comparison diagram; establishing a well-connecting profile deposition cycle according to the first step and the second step; and according to the sand body configuration division results of the fifth step and the sixth step, dividing sand bodies with different levels of configurations in the comparison graph to complete the vertical and horizontal construction of the sand body configuration.
2. The method for constructing the sand body configuration at the front edge of the high sand ratio thick-bed braided river delta according to claim 1, is characterized in that: the specific steps of field section observation in the first step are as follows:
1) identifying lithological combinations and strata according to field outcrop observation;
2) according to lithological characteristics observed in the field, dividing sedimentary facies and recognizing sedimentary patterns;
3) and identifying the stacking relation and lithologic interface of the sedimentary sand bodies according to the sedimentary facies belt change.
3. The method for constructing the sand body configuration at the front edge of the high sand ratio thick-bed braided river delta according to claim 1, is characterized in that: in the second step, the combination of the deposition cycle and the lithology is identified and depicted, and the specific steps are as follows:
1) dividing sand bodies meeting the following characteristics into single underwater diversion river sedimentation cycle: the single underwater diversion river sedimentation cycle shows a positive rhythm with thick lower part and thin upper part on the granularity, the lithology is a sedimentation structure of medium sandstone, fine sandstone, siltstone, argillaceous siltstone, development parallel bedding, blocky bedding and scouring surface containing mud gravel from bottom to top, the sorting is mostly medium, the roundness is sub-angular, and the contact relation is mainly linear contact; on the logging curve, a bell shape or the superposition of bell shapes which gradually draw close to a high value from bottom to top is mostly expressed, and the interface with the underlying and overlying gyroids is a flushing surface and a lithologic interface;
2) and (3) rotating the sand body division single estuary dam deposition which meets the following characteristics: the single estuary dam deposition cycle shows a reverse rhythm with fine bottom and coarse top in granularity, the lithology is argillaceous siltstone, fine sandstone and rock types are mainly rock debris feldspar sandstone, the separation is better, the rounding is mainly in a secondary edge angle shape, and the line contact and point contact relation is common; the well logging curve shows that the well logging curve is a funnel type or a stack of funnel types which gradually get close to a low value from bottom to top, the development and the stratification are staggered, and the well logging curve and the underlying and overlying gyroid interfaces are lithologic interfaces generally.
4. The method for constructing the sand body configuration at the front edge of the high sand ratio thick-bed braided river delta according to claim 1, is characterized in that: the fourth step of identifying the configuration interface comprises the following steps of:
dividing a sedimentary phase interface into I-level configuration interfaces;
dividing the deposition sub-phase interface into a II-level configuration interface;
thirdly, dividing the deposition micro-phase interface into a III-level configuration interface;
fourthly, dividing the single microphase deposition cycle interface identified in the second step into an IV-grade configuration interface;
and fifthly, dividing the physical property interface identified by the third step of coring well section sample analysis data into a V-level configuration interface.
5. The method for constructing the sand body configuration at the front edge of the high sand ratio thick-bed braided river delta according to claim 4, is characterized in that: the fourth step of establishing the configuration division scheme of the coring well section comprises the following steps:
firstly, identifying different-level configuration interfaces according to the configuration interface identification standard;
dividing the coring well section sand body divided by the I-level interface into I-level configuration sand bodies which represent composite sand bodies controlled by different sedimentary phases;
thirdly, dividing the coring well section sand body divided by the level II interface into level II configuration sand bodies representing different deposition sub-phase control composite sand bodies;
dividing the sand bodies of the coring well section divided by the level III interface into level III configuration sand bodies representing different deposition micro-phase control composite sand bodies;
dividing the sand body of the coring well section divided by the IV-level interface into IV-level configuration sand bodies which represent different sand body rotary sand body combinations;
dividing the coring well section sand body divided by the V-level interface into V-level configuration sand bodies representing different physical property sand bodies in the same deposition cycle.
6. The method for constructing the sand body configuration at the front edge of the high sand ratio thick-bed braided river delta according to claim 5, is characterized in that: and establishing a full well section configuration division scheme in the fifth step, which comprises the following specific steps:
taking the characteristics of the I-level configuration sand body of the coring section identified in the fourth step as the basis for dividing the I-level configuration sand body of the whole well section;
secondly, the characteristics of the core section II-level configuration sand body identified in the fourth step are used as the basis for dividing the whole well section II-level configuration sand body;
thirdly, taking the characteristics of the core-taking section III-grade structured sand body identified in the fourth step as the basis for dividing the whole well section III-grade structured sand body;
fourthly, taking the characteristics of the IV-grade sand body of the core section identified in the fourth step as the basis for dividing the IV-grade sand body of the whole well section;
and fifthly, taking the characteristics of the V-level configuration sand body of the coring section identified in the fourth step as the basis for dividing the V-level configuration sand body of the whole well section.
7. The method for constructing the sand body configuration at the front edge of the high sand ratio thick-bed braided river delta according to claim 6, is characterized in that: the IV-grade structured sand body is specifically divided into the following parts:
the GR curve box type, the tooth box type wide finger type, the resistivity curve box type, the sand body with the porosity and the permeability which are integrally reduced upwards are divided into main river channel sand bodies;
dividing the sand body with the GR curve smooth bell shape, the resistivity curve funnel shape, the porosity and the permeability which integrally become smaller upwards into single river channel sand bodies;
dividing the sand body with GR curve tooth box type + bell type, resistivity curve bell type, porosity and permeability which are gradually decreased upwards for a plurality of times into multi-river channel sand bodies;
dividing the sand body with the GR curve smooth funnel shape, the resistivity curve funnel shape and the porosity and permeability which are integrally and upwards increased into the sand body of the single estuary dam;
and dividing the sand body with the GR curve toothed funnel bell shape, the resistivity curve box shape and the porosity and the permeability which are gradually increased upwards into a multi-estuary dam sand body.
8. The method for constructing the sand body configuration at the front edge of the high sand ratio thick-bed braided river delta according to claim 7, is characterized in that: the sixth step of developing the sand body configuration division comprises the following specific steps:
1) dividing sand bodies which accord with the characteristics of the I-grade structured sand bodies in the fifth step into I-grade structured sand bodies;
2) dividing sand bodies which accord with the characteristics of the second-level configuration sand bodies in the fifth step into second-level configuration sand bodies;
3) dividing sand bodies which accord with the characteristics of the III-grade structured sand bodies in the fifth step into III-grade structured sand bodies;
4) dividing sand bodies which accord with the characteristics of the IV-grade structured sand bodies in the fifth step into IV-grade structured sand bodies;
5) and dividing the sand bodies meeting the characteristics of the V-grade configuration sand bodies in the fifth step of dividing scheme into V-grade configuration sand bodies.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114966886A (en) * | 2022-07-11 | 2022-08-30 | 成都理工大学 | Compact gas reservoir sand body connectivity grade determination method based on configuration |
| CN115577213A (en) * | 2022-11-11 | 2023-01-06 | 成都理工大学 | Water invasion direction prediction method |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105373648A (en) * | 2015-10-09 | 2016-03-02 | 西南石油大学 | Modeling method for sand shale interbed type sedimentary body reservoir architecture |
| CN106569287A (en) * | 2016-09-14 | 2017-04-19 | 中国石油化工股份有限公司 | Fan delta front reservoir prediction method based on composite sand body configuration model |
| CN107203651A (en) * | 2016-12-30 | 2017-09-26 | 中国石油天然气股份有限公司 | A kind of braided stream DAMAGE OF TIGHT SAND GAS RESERVOIRS reservoir architecture anatomic method |
| CN108334665A (en) * | 2018-01-05 | 2018-07-27 | 中国石油天然气股份有限公司 | A kind of braided stream reservoir architecture unit quantitatively characterizing method |
| CN109190953A (en) * | 2018-08-22 | 2019-01-11 | 中国石油化工股份有限公司 | Terrestrial lake basin mud shale sedimentary system division methods |
| US20190056527A1 (en) * | 2017-08-17 | 2019-02-21 | China University Of Geosciences (Beijing) | Method and Device of Predicting Reservoir Sand Bodies Based on a Wind Field-Provenance-Basin System |
| WO2019118658A1 (en) * | 2017-12-14 | 2019-06-20 | Schlumberger Technology Corporation | System and method for simulating reservoir models |
| CN111190228A (en) * | 2020-01-08 | 2020-05-22 | 中国石油大学(北京) | Submarine fan water channel reservoir configuration identification method |
| CN111239820A (en) * | 2020-02-19 | 2020-06-05 | 西南石油大学 | Deep sea leaf reservoir configuration characterization method based on well-seismic mode fitting |
| CN111429295A (en) * | 2020-03-19 | 2020-07-17 | 西南石油大学 | Deep sea water channel reservoir structure unit grading system |
| CN111968231A (en) * | 2020-08-14 | 2020-11-20 | 成都理工大学 | Three-dimensional stratum modeling method based on geological map section |
| CN112034528A (en) * | 2020-09-07 | 2020-12-04 | 陕西延长石油（集团）有限责任公司 | Method for depicting single sand body configuration of clastic rock reservoir |
| CN112052591A (en) * | 2020-09-07 | 2020-12-08 | 陕西延长石油（集团）有限责任公司 | Interlayer fine depicting and embedded modeling method under reservoir configuration constraint |
| US20210318464A1 (en) * | 2020-04-09 | 2021-10-14 | Saudi Arabian Oil Company | Optimization of well-planning process for identifying hydrocarbon reserves using an integrated multi-dimensional geological model |
-
2022
- 2022-03-22 CN CN202210285930.0A patent/CN114635681B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105373648A (en) * | 2015-10-09 | 2016-03-02 | 西南石油大学 | Modeling method for sand shale interbed type sedimentary body reservoir architecture |
| CN106569287A (en) * | 2016-09-14 | 2017-04-19 | 中国石油化工股份有限公司 | Fan delta front reservoir prediction method based on composite sand body configuration model |
| CN107203651A (en) * | 2016-12-30 | 2017-09-26 | 中国石油天然气股份有限公司 | A kind of braided stream DAMAGE OF TIGHT SAND GAS RESERVOIRS reservoir architecture anatomic method |
| US20190056527A1 (en) * | 2017-08-17 | 2019-02-21 | China University Of Geosciences (Beijing) | Method and Device of Predicting Reservoir Sand Bodies Based on a Wind Field-Provenance-Basin System |
| WO2019118658A1 (en) * | 2017-12-14 | 2019-06-20 | Schlumberger Technology Corporation | System and method for simulating reservoir models |
| CN108334665A (en) * | 2018-01-05 | 2018-07-27 | 中国石油天然气股份有限公司 | A kind of braided stream reservoir architecture unit quantitatively characterizing method |
| CN109190953A (en) * | 2018-08-22 | 2019-01-11 | 中国石油化工股份有限公司 | Terrestrial lake basin mud shale sedimentary system division methods |
| CN111190228A (en) * | 2020-01-08 | 2020-05-22 | 中国石油大学(北京) | Submarine fan water channel reservoir configuration identification method |
| CN111239820A (en) * | 2020-02-19 | 2020-06-05 | 西南石油大学 | Deep sea leaf reservoir configuration characterization method based on well-seismic mode fitting |
| CN111429295A (en) * | 2020-03-19 | 2020-07-17 | 西南石油大学 | Deep sea water channel reservoir structure unit grading system |
| US20210318464A1 (en) * | 2020-04-09 | 2021-10-14 | Saudi Arabian Oil Company | Optimization of well-planning process for identifying hydrocarbon reserves using an integrated multi-dimensional geological model |
| CN111968231A (en) * | 2020-08-14 | 2020-11-20 | 成都理工大学 | Three-dimensional stratum modeling method based on geological map section |
| CN112034528A (en) * | 2020-09-07 | 2020-12-04 | 陕西延长石油（集团）有限责任公司 | Method for depicting single sand body configuration of clastic rock reservoir |
| CN112052591A (en) * | 2020-09-07 | 2020-12-08 | 陕西延长石油（集团）有限责任公司 | Interlayer fine depicting and embedded modeling method under reservoir configuration constraint |
Non-Patent Citations (7)
| Title |
|---|
| LI, SHENGYU ET AL.: "Effect of alkaline diagenesis on sandstone reservoir quality: Insights from the Lower Cretaceous Erlian Basin, China", 《ENERGY EXPLORATION & EXPLOITATION》 * |
| 帅能员等: "孤东油田七区西馆上段曲流河储层构型研究", 《中国优秀硕士学位论文全文数据库基础科学辑》 * |
| 杜建波等: "洛伊地区三叠系沉积、储层及油气成藏特征研究", 《中国优秀博士学位论文全文数据库基础科学辑》 * |
| 杨辰雨等: "基于砂体构型精细刻画潮坪砂坝优质砂体——以大牛地气田D17井区太原组2段为例", 《石油与天然气地质》 * |
| 许欣雨等: "复杂断块油藏储层构型分析与精细构造解释", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
| 马新平等: "塔河油田YT2井区三叠系阿三段河道砂油藏描述", 《中国优秀硕士学位论文全文数据库基础科学辑》 * |
| 高丽敏等: "陈堡油田k2t1~3砂组扇三角洲储层构型研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114966886A (en) * | 2022-07-11 | 2022-08-30 | 成都理工大学 | Compact gas reservoir sand body connectivity grade determination method based on configuration |
| CN115577213A (en) * | 2022-11-11 | 2023-01-06 | 成都理工大学 | Water invasion direction prediction method |
| CN115577213B (en) * | 2022-11-11 | 2023-03-24 | 成都理工大学 | Water invasion direction prediction method |
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