CN107861171A - A kind of terrestrial lake basin sedimentary micro flat distribution map preparation method - Google Patents
A kind of terrestrial lake basin sedimentary micro flat distribution map preparation method Download PDFInfo
- Publication number
- CN107861171A CN107861171A CN201711092387.8A CN201711092387A CN107861171A CN 107861171 A CN107861171 A CN 107861171A CN 201711092387 A CN201711092387 A CN 201711092387A CN 107861171 A CN107861171 A CN 107861171A
- Authority
- CN
- China
- Prior art keywords
- sedimentary
- well
- micro
- sedimentary micro
- environment
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
Abstract
The invention discloses a kind of terrestrial lake basin sedimentary micro flat distribution map preparation method, the described method comprises the following steps：1) division of Pyatyi Sequence Stratigraphic Formation determines with sedimentary boundaries；2) Sedimentary Environment Discrimination；3) material resource and coverage determine；4) individual well sedimentary facies identification；5) sedimentary micro plane is into figure.Point out that sedimentary micro spatial feature should be expressed under Pyatyi Sequence Stratigraphic Formation yardstick, sedimentary facies identification faces Dominant Facies select permeability under three-level or fourth level sequence screen work, and sedimentary facies identification result is difficult to objective assurance.The geological information for making full use of each data to express, learns from other's strong points to offset one's weaknesses, and key operation step accomplishes quantification, establishes standard for concrete operations, reduces because of subjective judgement and the situation of impact analysis result.Drawing course realizes industrialization, by bulk statistics and data processing, can complete multiple lower sedimentary microfacies map authorized strength works of Pyatyi sequence stratigraphic framework constraint, optimized integration research and production requirement slitless connection within a short period of time.
Description
Technical field
The present invention relates to a kind of flat distribution map preparation method, specially a kind of terrestrial lake basin sedimentary micro flat distribution map
Preparing method, belong to oil exploration applied technical field.
Background technology
Deposition phasor is the important foundation support data of target area selection during oil-gas exploration, passes through sedimentary facies plane distribution
Figure determines favorable facies belt Distribution Characteristics, and preferably well location is the basic procedure of exploration.With going deep into for investigation and prospecting, three-level, level Four
Sedimentary system flat distribution map under Sequence Stratigraphic Formation can not meet actual exploration needs, the sedimentary micro under Pyatyi Sequence Stratigraphic Formation
Figure drawing deploys in primary study area, due to usually containing tens of multiple Pyatyi sequence units in a third-band sequence,
Workload increases severely, and conventional drawing thinking and method can not meet the needs actually explored.For problem above, it is contemplated that
A kind of preparation method of terrestrial lake basin sedimentary micro flat distribution map is provided.
The content of the invention
The purpose of the present invention is that to solve the above problems and provides a kind of terrestrial lake basin sedimentary micro plane distribution
Figure preparation method, quick, practicable technical support is provided for sedimentary micro industrialization drawing under Pyatyi Sequence Stratigraphic Formation.
The present invention is achieved through the following technical solutions above-mentioned purpose, and a kind of terrestrial lake basin sedimentary micro flat distribution map is compiled
Method processed, the described method comprises the following steps：
Step A, the division of Pyatyi Sequence Stratigraphic Formation determines with sedimentary boundaries；
Step B, Sedimentary Environment Discrimination；
Step C, material resource and coverage determine；
Step D, individual well sedimentary facies identification；
Step E, sedimentary micro plane is into figure.
Preferably, in step, the division of Pyatyi Sequence Stratigraphic Formation determines that method is as follows with sedimentary boundaries：
1. Sequence Stratigraphic Formation is established and whole district's Strata Comparison；There is certain corresponding relation in sedimentary facies, with Sequence Stratigraphic Formation if occurring
Bypass the immediate leadership, in sedimentary subfacies or sedimentary micro individual well identification process, often face Dominant Facies select permeability, put down to sedimentary micro
Face expression brings difficulty, therefore the industrialization drawing of sedimentary micro plane should be carried out under Pyatyi Sequence Stratigraphic Formation；Pass through High Frequency Cyclic
Sequence stratigraphy study method, selection marker well carry out Pyatyi sequence dividing, and whole district's Sequence Stratigraphic Formation is established by even well profile, and
Strata Comparison is carried out to all prospect pits in research area, evaluation well, establishes unified stratum splitting scheme；
2. determine sedimentary boundaries；Statistics layering well formation thickness, and formation thickness isogram is drawn, for without well or few
Wellblock, stratum variation tendency is determined by geological data, using distribution of strata scope as sedimentary system distribution.
Preferably, in stepb, Sedimentary Environment Discrimination mainly includes herein below：
1. Sedimentary Environment Discrimination standard；Mud stone is generally autochthonous deposit, and environment is relevant when its color deposits with it；Grey,
Dark grey, black are relevant with the formation of organic matter, belong to reduction or strong reducing environment；Red, brown, the oxide of yellow and iron
Or hydroxide is relevant, for oxidation and Strong oxdiative depositional environment；Green belongs to the mineral of the iron containing low price, is weak oxide or weak reduction
Environment；Depositional environment index (Ien) is defined as:
Ien=(Hdg × 0+Hgr × 0.25+Hg × 0.5+Hpr × 1)/Hm
Wherein, Hdg is Dark grey mud stone thickness；Hgr is grey mud stone thickness；Hg is green mud stone thickness；Hpr is purple
Brown mud stone thickness；Hm is mud stone gross thickness；
Depositional environment is judged according to environmental index (Ien) size, discrimination formula is：0.6 ＜ Ien≤1 is land exposed ring
Border；0.3 ＜ Ien≤0.6 is shore lacustrine deposits environment；0.1 ＜ Ien≤0.3 is Vlei depositional environment；0 ＜ Ien≤0.1 is deep for half
Lake-Deep lacustrine deposits environment；
2. Environments index count with into figure；According to layering result, Dark grey, ash in each Pyatyi sequence unit are counted
Color, green, purple brown mud stone thickness chart, depositional environment index is calculated according to formula, draws depositional environment index plane distribution
Figure, for without well or few wellblock, with reference to stratum variation tendency, thus it is speculated that depositional environment exponential distribution situation；
3. determine depositional environment；The line that depositional environment index isopleth value is 0.1,0.3,0.6 and 1 is picked out, as heavy
Product ambient boundary line, according to discrimination formula, determines land exposed environments, shore lacustrine environment, Vlei environment and half deep lake-deep lake successively
Environment plane distributing scope.
Preferably, wherein, in step C, material resource and coverage determine mainly to include herein below：
1. statistics sandstone percentage ratio simultaneously draws sandstone percentage than figure；Count each well sandstone thickness and formation thickness and calculate sand
Rock percentage, draw sandstone percentage in each Pyatyi Sequence Stratigraphic Units and compare flat distribution map；
2. material resource mouth identifies；Material resource be mouth be material resource enter basin passage, its on seismic reflector with lower dissected valley
Groove is to correspondingly；The distribution situation of incision groove in seismic profile is searched, determines material resource number and distributing position；
3. determine material resource coverage；Material resource coverage is centered on material resource mouth, in plane in sector into lake basin
Portion extends；Along source direction, sandstone percentage is than the trend in reduction, and in two material resource joint effect regions, sandstone percentage ratio is in
Current situation portion reduces, sandstone percentage between two material resources than reducing boundary of the boundary between two material resources.
Preferably, in step D, individual well sedimentary facies identification mainly includes herein below：
1. sedimentary facies identification；Earthquake, well logging, rock core, thin slice and various test assay data are comprehensively utilized, with reference to three-level
Sequence sedimentary system and sedimentary subfacies result of study are further sub-divided into sedimentary micro to sedimentary facies；Identifying that research area is main
After sedimentary micro type, whole district's sedimentary micro interpretation chart is established by well-log information, and to all prospect pits in research area, evaluation well
Corresponding interval sedimentary facies identification is carried out with Partial encryption development well；
2. explanation results distinguish display on base map；According to sedimentary facies identification result, it is micro- to determine that this area mainly deposits
Facies type, put and well-name in plan upslide well location, and each sedimentary micro is represented with different colors, sedimentary micro industry is made
Change drawing base map.
Preferably, wherein, in step E, sedimentary micro plane mainly includes herein below into figure：
1. draw river course；River course inputs the passage of deposit as source area to crystallizing field, and it is in ribbon spread, length and width
Than more than 3；According to river course phase well location distribution situation, channel boundary is drawn, is rationally divided for region of the length-width ratio less than 3
Fork；
2. draw the adjacent phase in river course；The sedimentary micro adjacent with river course has natural levee, flood fan, estuary dam, underwater shunting
Interchannel etc., its feature are nearby continuously or discontinuously to be distributed around river course, are determined by individual well sedimentary micro distributing position each
Sedimentary micro scope；
3. draw with channel deposit without the sedimentary micro directly contacted；The sedimentary micro unrelated with channel deposit is in the plane
Typically it is distributed in flakes, the control by material resource mouth is weaker, such as plain mire, carbonate facies, cream petrofacies etc.；Deposited according to individual well
Microfacies distribution situation, draw a circle to approve spatial distribution scope；
4. sedimentary micro stacked relation adjusts；River course microfacies brings to Front, other sedimentary micros adjacent with river course, according to
It is nearer from river course closer to top with the contact relation of river course microfacies, with channel deposit without its figure of the sedimentary micro directly contacted
For layer on Long-term therapy figure layer, depositional environment is placed in bottom；Capped its border of part of sedimentary micro is arranged to dotted line；
5. filling color simultaneously generates legend；The sedimentary micro species occurred inside statistics sedimentary microfacies map, it is reasonably combined
Color, assign filling color and generate legend.
The beneficial effects of the invention are as follows：
1) point out that sedimentary micro spatial feature should be expressed under Pyatyi Sequence Stratigraphic Formation yardstick, three-level or fourth level sequence lattice
Sedimentary facies identification faces Dominant Facies select permeability under frame, and sedimentary facies identification result is difficult to objective assurance；
2) abundant information used in the present invention, the geological information for making full use of each data to express, learns from other's strong points to offset one's weaknesses,
Key operation step accomplishes quantification, establishes standard for concrete operations, reduces because of subjective judgement and the feelings of impact analysis result
Condition；
3) drawing course realizes industrialization, by bulk statistics and data processing, can complete Pyatyi within a short period of time
Multiple lower sedimentary microfacies map authorized strength works of sequence stratigraphic framework constraint, optimized integration research and production requirement slitless connection.
Brief description of the drawings
Fig. 1 is the Cang Dong depression aperture leakage Pyatyi Sequence Stratigraphic Formation figures of inventive embodiments；
Fig. 2 is that the well shake of inventive embodiments combines the determination sedimentary boundaries location drawing；
Fig. 3 is the depositional environment map of inventive embodiments；
Fig. 4 is the material resource mouth identification figure of inventive embodiments；
Fig. 5 is that the army horse of inventive embodiments stands-helped to change the regional sandstone percentage in village than figure；
Fig. 6 is the sedimentary facies identification standard drawing of inventive embodiments；
Fig. 7 is that the sedimentary microfacies map of inventive embodiments draws base map；
Fig. 8 is the sedimentary micro flat distribution map of inventive embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to shown in Fig. 1-8, a kind of terrestrial lake basin sedimentary micro flat distribution map preparation method, methods described include with
Lower step：
Step A, the division of Pyatyi Sequence Stratigraphic Formation determines with sedimentary boundaries；
Step B, Sedimentary Environment Discrimination；
Step C, material resource and coverage determine；
Step D, individual well sedimentary facies identification；
Step E, sedimentary micro plane is into figure.
Wherein, in step, the division of Pyatyi Sequence Stratigraphic Formation determines that method is as follows with sedimentary boundaries：
1. Sequence Stratigraphic Formation is established and whole district's Strata Comparison.There is certain corresponding relation in sedimentary facies, with Sequence Stratigraphic Formation if occurring
Bypass the immediate leadership, in sedimentary subfacies or sedimentary micro individual well identification process, often face Dominant Facies select permeability, put down to sedimentary micro
Face expression brings difficulty, therefore the industrialization drawing of sedimentary micro plane should be carried out under Pyatyi Sequence Stratigraphic Formation.Pass through High Frequency Cyclic
Sequence stratigraphy study method, selection marker well carry out Pyatyi sequence dividing, and whole district's Sequence Stratigraphic Formation is established by even well profile, and
Strata Comparison is carried out to all prospect pits in research area, evaluation well, establishes unified stratum splitting scheme.
2. determine sedimentary boundaries.Statistics layering well formation thickness, and formation thickness isogram is drawn, for without well or few
Wellblock, stratum variation tendency is determined by geological data, using distribution of strata scope as sedimentary system distribution.
Wherein, in stepb, Sedimentary Environment Discrimination mainly includes herein below：
1. Sedimentary Environment Discrimination standard.Mud stone is generally autochthonous deposit, and environment is relevant when its color deposits with it.Grey,
Dark grey, black are relevant with the formation of organic matter, belong to reduction or strong reducing environment；Red, brown, the oxide of yellow and iron
Or hydroxide is relevant, for oxidation and Strong oxdiative depositional environment；Green belongs to the mineral of the iron containing low price, is weak oxide or weak reduction
Environment.Depositional environment index (Ien) is defined as:
Ien=(Hdg × 0+Hgr × 0.25+Hg × 0.5+Hpr × 1)/Hm
Wherein, Hdg is Dark grey mud stone thickness；Hgr is grey mud stone thickness；Hg is green mud stone thickness；Hpr is purple
Brown mud stone thickness；Hm is mud stone gross thickness.
Depositional environment is judged according to environmental index (Ien) size, discrimination formula is：0.6 ＜ Ien≤1 is land exposed ring
Border；0.3 ＜ Ien≤0.6 is shore lacustrine deposits environment；0.1 ＜ Ien≤0.3 is Vlei depositional environment；0 ＜ Ien≤0.1 is deep for half
Lake-Deep lacustrine deposits environment.
2. Environments index count with into figure.According to layering result, Dark grey, ash in each Pyatyi sequence unit are counted
Color, green, purple brown mud stone thickness chart, depositional environment index is calculated according to formula, draws depositional environment index plane distribution
Figure, for without well or few wellblock, with reference to stratum variation tendency, thus it is speculated that depositional environment exponential distribution situation.
3. determine depositional environment.The line that depositional environment index isopleth value is 0.1,0.3,0.6 and 1 is picked out, as heavy
Product ambient boundary line, according to discrimination formula, determines land exposed environments, shore lacustrine environment, Vlei environment and half deep lake-deep lake successively
Environment plane distributing scope.
Wherein, in step C, material resource and coverage determine mainly to include herein below：
1. statistics sandstone percentage ratio simultaneously draws sandstone percentage than figure.Count each well sandstone thickness and formation thickness and calculate sand
Rock percentage, draw sandstone percentage in each Pyatyi Sequence Stratigraphic Units and compare flat distribution map.
2. material resource mouth identifies.Material resource be mouth be material resource enter basin passage, its on seismic reflector with lower dissected valley
Groove is to correspondingly.The distribution situation of incision groove in seismic profile is searched, determines material resource number and distributing position.
3. determine material resource coverage.Material resource coverage is centered on material resource mouth, in plane in sector into lake basin
Portion extends.Along source direction, sandstone percentage is than the trend in reduction, and in two material resource joint effect regions, sandstone percentage ratio is in
Current situation portion reduces, sandstone percentage between two material resources than reducing boundary of the boundary between two material resources.
Wherein, in step D, individual well sedimentary facies identification mainly includes herein below：
1. sedimentary facies identification.
Comprehensively utilize earthquake, well logging, rock core, thin slice and various test assay data, with reference to third-band sequence sedimentary system and
Sedimentary subfacies result of study is further sub-divided into sedimentary micro to sedimentary facies.For example, delta facies includes delta plain, triangle
Continent leading edge and prodelta parfacies, delta front sub-facies can be further divided into distributary channel, underwater distributary river
Between road, 5 kinds of estuary dam, Long-term therapy, sheet sand sedimentary micros, pair of continental clastic deposited sediments microfacies and sedimentary facies and sedimentary subfacies
It should be related to that table 1 such as shows.After the research main sedimentary micro type in area is identified, whole district's sedimentary micro solution is established by well-log information
Plate is released, and corresponding interval sedimentary facies identification is carried out to all prospect pits in research area, evaluation well and Partial encryption development well.
Terrestrial lake basin sedimentary facies-sedimentary subfacies-the sedimentary micro of table 1 segments table
2. explanation results distinguish display on base map.
According to sedimentary facies identification result, determine the main sedimentary micro type in this area, put in plan upslide well location and
Well-name, and each sedimentary micro is represented with different colors, sedimentary micro industrialization drawing base map is made.
Wherein, in step E, sedimentary micro plane mainly includes herein below into figure：
1. draw river course.River course inputs the passage of deposit as source area to crystallizing field, and it is in ribbon spread, length and width
Than more than 3.According to river course phase well location distribution situation, channel boundary is drawn, is rationally divided for region of the length-width ratio less than 3
Fork.
2. draw the adjacent phase in river course.The sedimentary micro adjacent with river course has natural levee, flood fan, estuary dam, underwater shunting
Interchannel etc., its feature are nearby continuously or discontinuously to be distributed around river course, are determined by individual well sedimentary micro distributing position each
Sedimentary micro scope.
3. draw with channel deposit without the sedimentary micro directly contacted.The sedimentary micro unrelated with channel deposit is in the plane
Typically it is distributed in flakes, the control by material resource mouth is weaker, such as plain mire, carbonate facies, cream petrofacies etc..Deposited according to individual well
Microfacies distribution situation, draw a circle to approve spatial distribution scope.
4. sedimentary micro stacked relation adjusts.River course microfacies brings to Front, other sedimentary micros adjacent with river course, according to
It is nearer from river course closer to top with the contact relation of river course microfacies, with channel deposit without its figure of the sedimentary micro directly contacted
For layer on Long-term therapy figure layer, depositional environment is placed in bottom.Capped its border of part of sedimentary micro is arranged to dotted line
5. filling color simultaneously generates legend.The sedimentary micro species occurred inside statistics sedimentary microfacies map, it is reasonably combined
Color, assign filling color and generate legend.
Wherein, in step, the division of Pyatyi Sequence Stratigraphic Formation determines that method is as follows with sedimentary boundaries：
1. Pyatyi Sequence Stratigraphic Formation is established and whole district's Strata Comparison
Cang Dong depression Paleogene Systems stratum includes hole shop group group, SHAHEJIE FORMATION and Dongying Formation, and its mesopore shop group is divided into hole three again
Section, aperture leakage, hole once with four sub- sections on hole one.Under third-band sequence screen work, aperture leakage is the relative lake risen of lake level
Wealthy system tract, hole 21, hole 22, hole 23 and 244, hole fourth level sequence unit can be further divided into.Pass through stratum pair
Than aperture leakage is further divided into 10 Pyatyi sequence units (Fig. 1).By Strata Comparison, to 246 mouthfuls of spies in Cang Dong depressions
Well, evaluation well have carried out horizon compared, complete the system layer work of this area's aperture leakage Pyatyi sequence.
2. sedimentary boundaries determine
Well data is to determine the best data of distribution of strata, but relies primarily on ground in few well or without the determination of wellblock stratigraphic boundary
Shake data is carried out.By counting the delamination of 246 mouthfuls of wells of the whole district, the main distribution of target zone is determined, passes through key well well
Information contrast is shaken, Event tracking determines stratigraphic boundary final position (Fig. 2), and then determines research interval distribution of strata situation.
Wherein, in stepb, Sedimentary Environment Discrimination mainly includes herein below：
1. Sedimentary Environment Discrimination index calculates
Cang Dong depression aperture leakages be further divided into SQ 1.~SQ 10. ten Pyatyi sequence units, with the sedimentary micros of SQ 2.
Figure counts mud stone thickness, purple brown mud stone thickness, green mud stone thickness, grey mud stone thickness and the depth of the substratum exemplified by drawing
Grey mud stone thickness, and the depositional environment index of the interval is calculated according to environmental index calculation formula, exist as space is limited,
This lists part statistics and result of calculation (table 2).
2. depositional environment determines
After 2. depositional environment index calculates in 246 mouthfuls of well SQ of completion, depositional environment index isogram is drawn.According to ring
Border index (Ien) size judges depositional environment：0.6 ＜ Ien≤1 is land exposed environments；0.3 ＜ Ien≤0.6 is shore lacustrine deposits
Environment；0.1 ＜ Ien≤0.3 is Vlei depositional environment；0 ＜ Ien≤0.1 is half deep lake-Deep lacustrine deposits environment, irises out each deposition
Environmental field, form depositional environment map (Fig. 3).
The depositional environment index table of table 2
| Numbering | Pound sign | Mud stone | Purple brown mud stone | Green mud stone | Grey mud stone | Dark grey mud stone | Depositional environment index |
| 1 | Deep blue 15 | 51.5 | 47.5 | 0 | 0 | 4 | 0.92 |
| 2 | Official 102 | 52 | 0 | 14 | 2 | 36 | 0.14 |
| 3 | Official 126 | 71.5 | 0 | 0 | 71.5 | 0 | 0.25 |
| 4 | Official 139 | 30 | 0 | 0 | 5.5 | 24.5 | 0.05 |
| 5 | Official 142-1 | 40.5 | 0 | 0 | 0 | 40.5 | 0.00 |
| 6 | Official 189 | 64.5 | 13.5 | 0 | 0 | 51 | 0.21 |
Wherein, in step C, material resource and coverage determine mainly to include herein below：
1. material resource mouth identifies
Material resource is that mouth is the passage that material resource enters basin, and it is on seismic reflector with incision groove to corresponding.Pass through
Two dimension, 3-D seismics section Strata Comparison and Event tracking, incision groove is searched, identify Xue Guantun, Cangzhou, house female altogether
Temple, leaf three are dialled, black Ma Ying, lamp Ming Si, Meng Cun, Xu Yangqiao, Gu Xian and ten, hole shop incision groove development area.Incision groove enters lake
Basin position is both material resource mouth position.
2. statistics sandstone percentage ratio simultaneously draws sandstone percentage than figure
Count purpose of horizon sandstone thickness in work area and calculate sandstone percentage ratio, draw sandstone equal thickness (Fig. 5).
3. material resource coverage determines
2. substratum is mainly influenceed Wang Hai temples area aperture leakage SQ by event county's material resource and hole shop material resource, and sandstone percentage is shown than figure
This area's sandstone percentage ratio is mainly distributed between 10%~70%, and border is influenceed using sandstone 30% as material resource, and two material resources are handed over
Low value midpoint is the line of demarcation of two material resources in the range of boundary, determines Gu Xian and small station material resource spacial influence scope (Fig. 5).
Wherein, in step D, individual well sedimentary facies identification mainly includes herein below：
1. sedimentary micro individual well criterion of identification is established
Aperture leakage SQ2 substratum major developmentals delta, remote bank subaqueous fans and Shen Hu-half Deep lacustrine deposits, can further be identified
Go out delta plain river course, delta plain marsh, delta front distributary channel, delta front estuary dam, triangle
Continent leading edge Long-term therapy, prodelta mud, half deep lake-deep lake mud, remote bank subaqueous fans middle fan and 9 kinds of depositions of remote bank subaqueous fans exterior wing are micro-
Phase, by earthquake, rock core, well logging and each sedimentary micro comprehensive characteristics of thin slice analysis, establish sedimentary micro well logging and differentiate mark
Accurate (Fig. 6).Using the discrimination standard established, sedimentary facies identification is carried out to 246 mouthfuls of area of research well.
2. explanation results distinguish display on base map
Individual well sedimentary facies identification result, distinguish each sedimentary micro with color and throw on depositional environment map, it is heavy to be formed
Product microfacies draws base map (Fig. 7).
Wherein, in step C, material resource and coverage determine mainly to include herein below：
On sedimentary micro base map, according to individual well sedimentary micro distribution situation, sedimentary micro planar distribution feature is drawn,
In material resource coverage, stacked relation above and below adjustment sedimentary micro, without wellblock, sedimentary micro boundary line is arranged to point with the finger or gesticulate
Line, and corresponding collocation of colour is filled, legend is generated, completes monolayer deposition microfacies figure authorized strength work (Fig. 8).
With the research method, Cang Dong depressions aperture leakage is completed, Shipyard Park Banqiaobeidagang sand once supplies more than 20
Sedimentary micro industrializes map, shortens the work period three and divides more than two.Achievement in research is applied to stratum-lithological reservoir exploration
During, trap 13 is successfully implemented, self-contained 3, scale reserves area is found, 21,000,000 tons of added reserves, is oil rich subdepression
Fine granularing scalability provides important support.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
- A kind of 1. terrestrial lake basin sedimentary micro flat distribution map preparation method, it is characterised in that：It the described method comprises the following steps：Step A, the division of Pyatyi Sequence Stratigraphic Formation determines with sedimentary boundaries；Step B, Sedimentary Environment Discrimination；Step C, material resource and coverage determine；Step D, individual well sedimentary facies identification；Step E, sedimentary micro plane is into figure.
- A kind of 2. terrestrial lake basin sedimentary micro flat distribution map preparation method according to claim 1, it is characterised in that： In step A, the division of Pyatyi Sequence Stratigraphic Formation determines that method is as follows with sedimentary boundaries：1. Sequence Stratigraphic Formation is established and whole district's Strata Comparison；Certain corresponding relation be present with Sequence Stratigraphic Formation in sedimentary facies, if bypassing the immediate leadership, In sedimentary subfacies or sedimentary micro individual well identification process, Dominant Facies select permeability is often faced, gives sedimentary micro flat table Up to bringing difficulty, therefore the industrialization drawing of sedimentary micro plane should be carried out under Pyatyi Sequence Stratigraphic Formation；Pass through high frequency cyclic sequence Stratum science study method, selection marker well carry out Pyatyi sequence dividing, and whole district's Sequence Stratigraphic Formation is established by even well profile, and to grinding Study carefully all prospect pits in area, evaluation well carries out Strata Comparison, the unified stratum splitting scheme of foundation；2. determine sedimentary boundaries；Statistics layering well formation thickness, and formation thickness isogram is drawn, for without well or few well Area, stratum variation tendency is determined by geological data, using distribution of strata scope as sedimentary system distribution.
- A kind of 3. terrestrial lake basin sedimentary micro flat distribution map preparation method according to claim 1, it is characterised in that： In step B, Sedimentary Environment Discrimination mainly includes herein below：1. Sedimentary Environment Discrimination standard；Mud stone is generally autochthonous deposit, and environment is relevant when its color deposits with it；It is grey, dark-grey Color, black are relevant with the formation of organic matter, belong to reduction or strong reducing environment；Red, brown, the oxide or hydrogen of yellow and iron Oxide is relevant, for oxidation and Strong oxdiative depositional environment；Green belongs to the mineral of the iron containing low price, is weak oxide or weak reduction ring Border；Depositional environment Index Definition is:Ien=(Hdg × 0+Hgr × 0.25+Hg × 0.5+Hpr × 1)/HmWherein, Hdg is Dark grey mud stone thickness；Hgr is grey mud stone thickness；Hg is green mud stone thickness；Hpr is purple brown Mud stone thickness；Hm is mud stone gross thickness；Depositional environment is judged according to environmental index (Ien) size, discrimination formula is：0.6 ＜ Ien≤1 is land exposed environments； 0.3 ＜ Ien≤0.6 is shore lacustrine deposits environment；0.1 ＜ Ien≤0.3 is Vlei depositional environment；0 ＜ Ien≤0.1 be half deep lake- Deep lacustrine deposits environment；2. Environments index count with into figure；According to layering result, Dark grey in each Pyatyi sequence unit, grey, green is counted Color, purple brown mud stone thickness chart, depositional environment index is calculated according to formula, draw depositional environment index flat distribution map, it is right In without well or few wellblock, with reference to stratum variation tendency, thus it is speculated that depositional environment exponential distribution situation；3. determine depositional environment；The line that depositional environment index isopleth value is 0.1,0.3,0.6 and 1 is picked out, as deposition ring Border boundary line, according to discrimination formula, land exposed environments, shore lacustrine environment, Vlei environment and half deep lake-deep lakeenvironment are determined successively Plane distributing scope.
- A kind of 4. terrestrial lake basin sedimentary micro flat distribution map preparation method according to claim 1, it is characterised in that：Its In, in step C, material resource and coverage determine mainly to include herein below：1. statistics sandstone percentage ratio simultaneously draws sandstone percentage than figure；Count each well sandstone thickness and formation thickness and calculate sandstone hundred Divide ratio, draw sandstone percentage in each Pyatyi Sequence Stratigraphic Units and compare flat distribution map；2. material resource mouth identifies；Material resource be mouth be material resource enter basin passage, its on seismic reflector with incision groove to It is corresponding；The distribution situation of incision groove in seismic profile is searched, determines material resource number and distributing position；3. determine material resource coverage；Material resource coverage is centered on material resource mouth, is prolonged in plane in sector to lake basin inside Stretch；Along source direction, sandstone percentage is than the trend in reduction, and in two material resource joint effect regions, sandstone percentage ratio is in current situation Portion reduces, sandstone percentage between two material resources than reducing boundary of the boundary between two material resources.
- A kind of 5. terrestrial lake basin sedimentary micro flat distribution map preparation method according to claim 1, it is characterised in that： In step D, individual well sedimentary facies identification mainly includes herein below：1. sedimentary facies identification；Earthquake, well logging, rock core, thin slice and various test assay data are comprehensively utilized, with reference to third-band sequence Sedimentary system and sedimentary subfacies result of study are further sub-divided into sedimentary micro to sedimentary facies；Identifying that studying area mainly deposits After Microfacies Types, whole district's sedimentary micro interpretation chart is established by well-log information, and to all prospect pits in research area, evaluation well and portion Encryption development well is divided to carry out corresponding interval sedimentary facies identification；2. explanation results distinguish display on base map；According to sedimentary facies identification result, the main sedimentary micro class in this area is determined Type, put and well-name in plan upslide well location, and each sedimentary micro is represented with different colors, sedimentary micro industrialization system is made Figure base map.
- A kind of 6. terrestrial lake basin sedimentary micro flat distribution map preparation method according to claim 1, it is characterised in that：Its In, in step E, sedimentary micro plane mainly includes herein below into figure：1. draw river course；River course inputs the passage of deposit as source area to crystallizing field, and it is in ribbon spread, and length-width ratio is big In 3；According to river course phase well location distribution situation, channel boundary is drawn, reasonable bifurcated is carried out for region of the length-width ratio less than 3；2. draw the adjacent phase in river course；The sedimentary micro adjacent with river course has natural levee, flood fan, estuary dam, distributary channel Between etc., its feature is nearby continuously or discontinuously to be distributed around river course, and each deposition is determined by individual well sedimentary micro distributing position Microfacies scope；3. draw with channel deposit without the sedimentary micro directly contacted；The sedimentary micro unrelated with channel deposit is general in the plane It is distributed in flakes, the control by material resource mouth is weaker, such as plain mire, carbonate facies, cream petrofacies etc.；According to individual well sedimentary micro Distribution situation, draw a circle to approve spatial distribution scope；4. sedimentary micro stacked relation adjusts；River course microfacies brings to Front, other sedimentary micros adjacent with river course, according to river The contact relation of road microfacies, it is nearer from river course closer to top, with channel deposit without its figure layer position of the sedimentary micro directly contacted On Long-term therapy figure layer, depositional environment is placed in bottom；Capped its border of part of sedimentary micro is arranged to dotted line；5. filling color simultaneously generates legend；The sedimentary micro species occurred inside statistics sedimentary microfacies map, reasonably combined color, Assign filling color and generate legend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711092387.8A CN107861171A (en) | 2017-11-08 | 2017-11-08 | A kind of terrestrial lake basin sedimentary micro flat distribution map preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711092387.8A CN107861171A (en) | 2017-11-08 | 2017-11-08 | A kind of terrestrial lake basin sedimentary micro flat distribution map preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107861171A true CN107861171A (en) | 2018-03-30 |
Family
ID=61701321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711092387.8A Pending CN107861171A (en) | 2017-11-08 | 2017-11-08 | A kind of terrestrial lake basin sedimentary micro flat distribution map preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107861171A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108875258A (en) * | 2018-07-05 | 2018-11-23 | 中海石油(中国)有限公司 | A kind of non-advantage phase drawing method of sedimentary facies |
| CN110441813A (en) * | 2019-07-25 | 2019-11-12 | 中国石油大学(北京) | A kind of prediction technique of the distribution of lacustrine facies high quality source rock |
| CN110821496A (en) * | 2019-10-17 | 2020-02-21 | 中国石油集团长城钻探工程有限公司 | Organic shale phase mode establishing method and organic shale evaluation method |
| CN111487393A (en) * | 2020-05-11 | 2020-08-04 | 北京师范大学 | Method for measuring paleo-salinity value, single-well and multi-well paleo-salinity plan and method for drawing sedimentary facies development plan |
| CN111913220A (en) * | 2020-08-13 | 2020-11-10 | 中海石油(中国)有限公司 | Low-permeability sandstone relative high-permeability strip prediction method based on phase mode |
| CN112149312A (en) * | 2020-10-13 | 2020-12-29 | 中国石油天然气股份有限公司 | Method and device for determining deposition microphase, electronic equipment and storage medium |
| CN112730808A (en) * | 2020-12-28 | 2021-04-30 | 长江大学 | Method for determining number of continental lake basin sea invasion action periods under non-dense sampling condition |
| CN113008921A (en) * | 2021-02-04 | 2021-06-22 | 新疆大学 | Method for determining ancient wind direction of basin through precipitation differentiation phenomena on two sides of lake center island |
| CN113295849A (en) * | 2021-05-21 | 2021-08-24 | 新疆大学 | Method for determining ancient wind direction of continental lake basin through distribution pattern of deposition system |
| CN113960694A (en) * | 2020-07-21 | 2022-01-21 | 中国石油化工股份有限公司 | Sedimentary facies identification method and device |
| CN114594526A (en) * | 2020-12-03 | 2022-06-07 | 中国石油化工股份有限公司 | Quantitative evaluation method for inter-well plane connectivity of river facies sand body |
| CN115875012B (en) * | 2021-09-28 | 2024-04-30 | 大庆油田有限责任公司 | Reservoir description method under drought delta well pattern condition |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6885941B2 (en) * | 2003-04-30 | 2005-04-26 | Exxonmobil Upstream Research Company | Method for predicting properties of a sedimentary deposit from a thickness contour of the deposit |
| CN103529474A (en) * | 2012-07-02 | 2014-01-22 | 中国石油化工股份有限公司 | Method for realizing accurate description lithofacies by using lithology subdivision |
| CN105629325A (en) * | 2015-12-23 | 2016-06-01 | 中国石油大学(北京) | Foreland basin alluvial fan fine description and prediction method |
| CN107045153A (en) * | 2017-01-15 | 2017-08-15 | 中国石油大港油田勘探开发研究院 | Terrestrial lake basin sloped region Stratigraphic reservoir Dominant Facies Forecasting Methodology |
| CN107165621A (en) * | 2017-04-28 | 2017-09-15 | 中国石油大港油田勘探开发研究院 | A kind of method that utilization clustering method recognizes many well sedimentary micros |
-
2017
- 2017-11-08 CN CN201711092387.8A patent/CN107861171A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6885941B2 (en) * | 2003-04-30 | 2005-04-26 | Exxonmobil Upstream Research Company | Method for predicting properties of a sedimentary deposit from a thickness contour of the deposit |
| CN103529474A (en) * | 2012-07-02 | 2014-01-22 | 中国石油化工股份有限公司 | Method for realizing accurate description lithofacies by using lithology subdivision |
| CN105629325A (en) * | 2015-12-23 | 2016-06-01 | 中国石油大学(北京) | Foreland basin alluvial fan fine description and prediction method |
| CN107045153A (en) * | 2017-01-15 | 2017-08-15 | 中国石油大港油田勘探开发研究院 | Terrestrial lake basin sloped region Stratigraphic reservoir Dominant Facies Forecasting Methodology |
| CN107165621A (en) * | 2017-04-28 | 2017-09-15 | 中国石油大港油田勘探开发研究院 | A kind of method that utilization clustering method recognizes many well sedimentary micros |
Non-Patent Citations (3)
| Title |
|---|
| 刘群明: "柴东第四系综合物源分析及主力气田区岩性圈闭预测", 《中国优秀硕士学位论文全文数据库 基础科学辑》 * |
| 谭锋奇 等: "柴达木盆地七个泉地区高分辨率层序格架建立方法研究", 《沉积与特提斯地质》 * |
| 钟玮: "黄骅坳陷沧东凹陷孔店组二段砂体分布与沉积体系分析", 《中国优秀硕士学位论文全文数据库 基础科学辑》 * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108875258A (en) * | 2018-07-05 | 2018-11-23 | 中海石油(中国)有限公司 | A kind of non-advantage phase drawing method of sedimentary facies |
| CN108875258B (en) * | 2018-07-05 | 2022-11-01 | 中海石油(中国)有限公司 | Method for compiling sedimentary facies non-dominant facies |
| CN110441813A (en) * | 2019-07-25 | 2019-11-12 | 中国石油大学(北京) | A kind of prediction technique of the distribution of lacustrine facies high quality source rock |
| CN110821496B (en) * | 2019-10-17 | 2021-06-29 | 中国石油天然气集团有限公司 | Organic shale phase mode establishing method and organic shale evaluation method |
| CN110821496A (en) * | 2019-10-17 | 2020-02-21 | 中国石油集团长城钻探工程有限公司 | Organic shale phase mode establishing method and organic shale evaluation method |
| CN111487393A (en) * | 2020-05-11 | 2020-08-04 | 北京师范大学 | Method for measuring paleo-salinity value, single-well and multi-well paleo-salinity plan and method for drawing sedimentary facies development plan |
| CN113960694B (en) * | 2020-07-21 | 2024-02-20 | 中国石油化工股份有限公司 | Deposition phase identification method and device |
| CN113960694A (en) * | 2020-07-21 | 2022-01-21 | 中国石油化工股份有限公司 | Sedimentary facies identification method and device |
| CN111913220B (en) * | 2020-08-13 | 2023-04-18 | 中海石油(中国)有限公司 | Low-permeability sandstone relative high-permeability strip prediction method based on phase mode |
| CN111913220A (en) * | 2020-08-13 | 2020-11-10 | 中海石油(中国)有限公司 | Low-permeability sandstone relative high-permeability strip prediction method based on phase mode |
| CN112149312A (en) * | 2020-10-13 | 2020-12-29 | 中国石油天然气股份有限公司 | Method and device for determining deposition microphase, electronic equipment and storage medium |
| CN112149312B (en) * | 2020-10-13 | 2024-01-30 | 中国石油天然气股份有限公司 | Method and device for determining deposition microphase, electronic equipment and storage medium |
| CN114594526A (en) * | 2020-12-03 | 2022-06-07 | 中国石油化工股份有限公司 | Quantitative evaluation method for inter-well plane connectivity of river facies sand body |
| CN112730808A (en) * | 2020-12-28 | 2021-04-30 | 长江大学 | Method for determining number of continental lake basin sea invasion action periods under non-dense sampling condition |
| CN113008921A (en) * | 2021-02-04 | 2021-06-22 | 新疆大学 | Method for determining ancient wind direction of basin through precipitation differentiation phenomena on two sides of lake center island |
| CN113008921B (en) * | 2021-02-04 | 2023-04-07 | 新疆大学 | Method for determining ancient wind direction of basin through precipitation differentiation phenomena on two sides of lake center island |
| CN113295849B (en) * | 2021-05-21 | 2022-12-13 | 新疆大学 | Method for determining ancient wind direction of continental lake basin through distribution pattern of deposition system |
| CN113295849A (en) * | 2021-05-21 | 2021-08-24 | 新疆大学 | Method for determining ancient wind direction of continental lake basin through distribution pattern of deposition system |
| CN115875012B (en) * | 2021-09-28 | 2024-04-30 | 大庆油田有限责任公司 | Reservoir description method under drought delta well pattern condition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107861171A (en) | A kind of terrestrial lake basin sedimentary micro flat distribution map preparation method | |
| CN107807407B (en) | A kind of petroleum zone efficiency evaluation method and apparatus | |
| US10365387B1 (en) | Method for secondary exploration of old oil area in fault subsidence basin | |
| CN105510993B (en) | The buried extrusion pressing type complexity gypseous-salt rock identification of foreland basin and distribution forecasting method | |
| CN104747183B (en) | A kind of carbonate reservoir compressive classification method | |
| CN104965979A (en) | Tight sandstone effective reservoir identifying method | |
| CN103529474B (en) | Adopt lithology segmentation to realize the method for petrofacies fine description | |
| CN105201490B (en) | A kind of shale interval petrographic analysis method | |
| CN109613612A (en) | A kind of carbonate rock particle beach meticulous depiction and prediction technique | |
| CN105425316A (en) | Ancient landform restoration method based on impression method | |
| CN101236257A (en) | Oil well location determination technical method | |
| CN107515957A (en) | Mud shale SEQUENCE STRATIGRAPHIC DIVISION method | |
| CN113608278B (en) | Sandstone-type uranium ore positioning method in red heterolayer of sedimentary basin | |
| CN108072748A (en) | A kind of method of the carbonate rock lithofacies characterization based on advantage lithology | |
| CN105629304B (en) | One kind overlaps mode identification method based on multiattribute sand body | |
| CN105092820A (en) | Bioclastic limestone reservoir heterogeneity research method | |
| CN106199727A (en) | A kind of method applying seismic interval velocity identification shale gas dessert | |
| CN103377196A (en) | Lithofacies paleogeography data processing method based on geographic information system | |
| CN105116447A (en) | A geological river direction discrimination method based on curvature-abnormal stripes | |
| CN108693562B (en) | A method of with electric imaging logging measure paleocurrent to | |
| CN110320574A (en) | The method portrayed based on gentle slope delta Thin Sandbody | |
| CN108267797A (en) | With the raw palaeogeomorphic restoration methods in normal fault development area | |
| Toosy et al. | Depositional architecture of Eocene and Cretaceous reservoirs (blending seismic and well data) in Mubarik Area, Central Indus Basin, Pakistan | |
| CN105089659A (en) | Conglomerate oil reservoir seepage unit recognizing method | |
| CN113156531B (en) | Hidden manganese ore bed exploration method |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180330 |
|
| RJ01 | Rejection of invention patent application after publication |