CN103969698A - Relative water depth rangeability calculation method - Google Patents
Relative water depth rangeability calculation method Download PDFInfo
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- CN103969698A CN103969698A CN201410218974.7A CN201410218974A CN103969698A CN 103969698 A CN103969698 A CN 103969698A CN 201410218974 A CN201410218974 A CN 201410218974A CN 103969698 A CN103969698 A CN 103969698A
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- glutenite
- sediment
- water depth
- relative water
- deposited particles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
- G01V9/007—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00 by detecting gases or particles representative of underground layers at or near the surface
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N2015/0277—Average size only
Abstract
The invention relates to the field of geological prospecting, in particular to a relative water depth rangeability calculation method. The relative water depth rangeability calculation method includes the steps that the horizontal extended distance of sediment is calculated according to the percentage composition of glutenite on multiple sites; the ancient gradient of a slope zone in the same position as the horizontal extended distance of sediment is acquired; the relative water depth rangeability is calculated according to the ancient gradient of the slope zone and the horizontal extended distance of the sediment. Through the relative water depth rangeability calculation method, the horizontal extended distance of the sediment can be calculated through the percentage composition of glutenite on multiple sites; because glutenite is buried under water, the glutenite will not be eroded, and thus measurement inaccuracy caused by the situation that the overwater part of the sediment is prone to erosion can be avoided, the reliability of the calculated horizontal extended distance of the sediment is higher, and the accuracy of the relative water depth rangeability calculated through the ancient gradient of the slope zone and the horizontal extended distance of the sediment is higher.
Description
Technical field
The present invention relates to geological exploration field, in particular to the computing method of relative water depth amplitude of variation.
Background technology
Position, the edge in ancient lakes or sea (loke shore, seashore), owing to there being the injection in river, having a large amount of silt carryings so far, and deposits.Through the compacting of burying of millions of years, the silt generation Diagn that deposit ancient times, forming a kind of inner growth has very mushy reservoir rock.This kind of rock can be stored abundant hydrocarbon resources, and in pool edge, fossil lake extensive development, becomes the important oil bearing reservoir of a class of east China petroleum exploration domain.But the growth of this rocks can be subject to the impact that pool relative water depth in fossil lake changes: when depth of water amplitude of variation is greatly time, extend far, this rocks is thicker at the growth thickness of loke shore, growth area is wider in the lake, covalency in; When amplitude of variation hour, this rocks is grown thin thickness, growth area is less.At petroleum exploration domain, need area and thickness by determining that such reservoir rock is grown, and then estimate hydrocarbon resources reserves.Therefore, need to quantitatively calculate the relative water depth amplitude of variation of ancient lakes specific period, with this, determine the developmental state of reservoir rock.Meanwhile, in academic research field, about recovering the problem of palaeogeomorphology, the ancient depth of water, be focus, the difficult point of studying in the fields such as geology, sedimentology always, the method also has positive effect for the research of improving geology, sedimentological ancient depth of water recovery.
Once there is a few years ago foreign scholar to propose to utilize the ancient gradient of ancient seashore slope belt and the extended distance of seashore channel deposit waterborne to calculate the amplitude of variation of relative water depth.First the method carries out the calculating of the ancient gradient of slope belt of water bank edge slope belt, also need in addition to measure according to the on-the-spot investigation in field the distance that river drift waterborne extends forward at slope belt, sediment horizontal-extending distance namely, utilize these two parameters to carry out trigonometric function calculating, finally calculate relative water depth amplitude of variation.
But in prior art, when calculating relative water depth amplitude of variation, main what utilize is the sediment horizontal-extending distance that the extended distance of river drift waterborne calculates.Because sedimental above water is easily degraded, preserves imperfect, cause river course waterborne extended distance to be difficult for Measurement accuracy.This has also just caused the paleo-streams relative water depth amplitude of variation calculating is inaccurate.
Summary of the invention
The object of the present invention is to provide the computing method of relative water depth amplitude of variation, to solve the above problems.
Provide in an embodiment of the present invention the computing method of relative water depth amplitude of variation to comprise:
According to the glutenite percentage composition value in a plurality of places, calculate sediment horizontal-extending distance;
Obtain and the slope belt ancient gradient of described sediment horizontal-extending apart from same position;
According to the ancient gradient of described slope belt and described sediment horizontal-extending apart from calculating relative water depth amplitude of variation.
Preferably, the described glutenite percentage composition value according to a plurality of places is calculated sediment horizontal-extending apart from comprising:
According to first period a plurality of places glutenite percentage composition value draw the first glutenite percentage composition isogram;
According to the glutenite percentage composition value in a plurality of places described in the second period, draw the second glutenite percentage composition isogram;
According to described the first glutenite percentage composition isogram and described the second glutenite percentage composition isogram, calculate sediment horizontal-extending distance.
Preferably, also comprise: measure the glutenite cumulative thickness of assigned address and the stratum cumulative thickness of this position;
According to the ratio of described glutenite cumulative thickness and described stratum cumulative thickness, obtain the described glutenite percentage composition value of described assigned address.
Preferably, also comprise:
Obtain the particle diameter mean value of deposited particles;
According to the water channel sediment residual thickness in ancient times measuring, calculate the paleochannel degree of depth;
According to described particle diameter mean value and the ancient gradient of paleochannel depth calculation slope belt.
Preferably, described, also comprise before obtaining the particle diameter mean value of deposited particles:
Obtain a plurality of deposited particles;
Adopt the mode of directly measuring to measure the particle diameter of each deposited particles;
If the particle diameter of deposited particles is less than default limit value, adopts the mode of apparatus measures to measure the particle diameter of this deposited particles, and obtain direct measured value as grain diameter measurement value;
If the particle diameter of deposited particles is not less than default limit value, using the direct measured value obtaining as grain diameter measurement value;
According to the described grain diameter measurement value of each deposited particles, calculate particle diameter mean value.
Preferably, described instrument comprises: laser particle analyzer and optical microscope.
Preferably, also comprise:
Measure the thickness of coarse grain deposition of many phases;
Calculate the mean value of coarse grain deposition described in many phases as water channel sediment residual thickness in ancient times.
Preferably, also comprise: according to following formula, calculate the ancient gradient of slope belt:
S＝0.141×D
50×d
-1
Wherein, S is the ancient gradient of slope belt, D
50for the particle diameter mean value of deposited particles, d is the paleochannel degree of depth.
Preferably, according to following formula, calculate relative water depth amplitude of variation;
H＝X×S
Wherein H is relative water depth amplitude of variation, and X is sediment horizontal-extending distance, and S is the ancient gradient of slope belt.
Preferably, adopt the mode of apparatus measures to comprise the particle diameter measurement of this deposited particles:
Pulverizing is with the rock sample of deposited particles, and the particle size that makes described deposited particles is 0.5-1.5mm;
Rock sample after pulverizing is placed in to the H that concentration is 10%-20%
2o
2in solution, and default a period of time of heating water bath;
Taking-up is placed in H
2o
2rock sample in solution, and this rock sample is placed in to the hydrochloric acid solution that concentration is 5%-15%, until rock sample is without Bubble formation;
Taking-up is placed in the rock sample of hydrochloric acid solution, and removes the H on rock sample
2o
2solution and hydrochloric acid solution;
Grind described rock sample, to obtain independently deposited particles;
Use laser particle analyzer to measure the particle diameter of deposited particles.
The computing method of the relative water depth amplitude of variation that the embodiment of the present invention provides, the sediment horizontal-extending distance of calculating with the extended distance that utilizes river drift waterborne of the prior art, because sedimental above water is easily degraded, preserve imperfect, cause river course waterborne extended distance to be difficult for Measurement accuracy, and then to cause relative water depth amplitude of variation be inaccurate comparing, it is by utilizing the glutenite percentage composition in a plurality of places to calculate sediment horizontal-extending distance, due to glutenite be bury underwater, can not suffer erosion, so just, avoided because sediment above water is easily degraded, and the measurement causing is inaccurate, the reliability that makes to calculate sediment horizontal-extending distance is stronger, and then make by the ancient gradient of slope belt and sediment horizontal-extending stronger apart from the accuracy of the relative water depth amplitude of variation calculating.
Accompanying drawing explanation
Fig. 1 shows the basic flow sheet of computing method of the relative water depth amplitude of variation of the embodiment of the present invention;
Fig. 2 shows the sediment horizontal-extending of relative water depth amplitude of variation of the embodiment of the present invention apart from calculation flow chart;
Fig. 3 show the embodiment of the present invention relative water depth amplitude of variation two period of morning and evening glutenite percentage composition isogram comparison diagram;
Fig. 4 shows the schematic diagram of the relative water depth amplitude of variation computing method of the embodiment of the present invention.
Embodiment
Below by specific embodiment, also by reference to the accompanying drawings the present invention is described in further detail.
The embodiment of the present invention 1 provides the computing method of relative water depth amplitude of variation, as shown in Figure 1, comprises the steps:
S101, calculates sediment horizontal-extending distance according to the glutenite percentage composition value in a plurality of places;
S102, obtains and the slope belt ancient gradient of sediment horizontal-extending apart from same position;
S103, according to the ancient gradient of slope belt and sediment horizontal-extending apart from calculating relative water depth amplitude of variation.
The computing method of relative water depth amplitude of variation mainly utilize sediment horizontal-extending distance and the ancient gradient of slope belt to calculate, certainly the ancient gradient of sediment horizontal-extending distance and slope belt refers to distance and the ancient gradient of same position, and relative water depth amplitude of variation refers to the difference of the depth of water in two periods sooner or later.
In prior art, the sediment horizontal-extending distance that the sediment extended distance waterborne drawing according to the on-the-spot investigation in field calculates is inaccurate, its reason is sediment waterborne, impact along with current, migration along with the time, can make sedimental above water be degraded, and then the sediment horizontal-extending that causes calculating distance is inaccurate, in view of this, in step S101, adopted by glutenite percentage composition value and calculated sediment horizontal-extending distance, to substitute by sediment extended distance waterborne, calculated sediment horizontal-extending distance.In order to accurately calculate sediment horizontal-extending distance, need to first measure local glutenite percentage composition, according to glutenite percentage composition, calculating sediment horizontal-extending distance.Wherein, for the accurate percentage composition of measuring glutenite, need to play many mouthfuls of prospect pits in position to be measured, certainly, the position of prospect pit is more intensive, and the data of the glutenite percentage composition obtaining are also just more, distribute average, also can make the glutenite percentage composition that calculates more accurate.After recording glutenite percentage composition, can draw glutenite percentage composition (glutenite thickness/zone thickness) isogram in two periods sooner or later according to the glutenite percentage composition of a plurality of positions that record, to obtain more intuitively sediment horizontal-extending distance.
Step S102, in order to calculate relative water depth amplitude of variation, also need to obtain the ancient gradient of slope belt, wherein, the ancient gradient of slope belt can calculate according to the paleochannel degree of depth of this position and average median size, its computation process has been described in prior art, has not repeated them here.
Step S104, last, according to the ancient gradient of slope belt and sediment horizontal-extending apart from calculating relative water depth amplitude of variation.The ancient gradient of slope belt, sediment horizontal-extending distance and relative water depth amplitude of variation have formed a right-angle triangle, according to the account form of right angle trigonometry function, can be regarded as to obtain relative water depth amplitude of variation.
The computing method of the relative water depth amplitude of variation that the embodiment of the present invention provides, by utilizing the glutenite percentage composition in a plurality of places to calculate underwater sediment(s) horizontal-extending distance, wherein underwater sediment(s) horizontal-extending distance refers to the difference of the sediment horizontal range in two periods sooner or later.Due to glutenite be bury underwater, can not suffer erosion, calculate like this, just avoided because sediment above water is easily degraded, and the measurement causing is inaccurate, the reliability that makes to calculate sediment horizontal-extending distance is stronger, and then makes the accuracy of the relative water depth amplitude of variation that calculates by the ancient gradient of slope belt and sediment horizontal-extending distance stronger.
The embodiment of the present invention 2 on the basis of embodiment 1, further description the details of computing method of relative water depth amplitude of variation.
For the ease of calculating sediment horizontal-extending distance, step S101 can be divided into following steps, as shown in Figure 2:
S201, according to first period a plurality of places glutenite percentage composition value draw the first glutenite percentage composition isogram;
S202, draws the second glutenite percentage composition isogram according to the glutenite percentage composition value in a plurality of places described in the second period;
S203, calculates sediment horizontal-extending distance according to described the first glutenite percentage composition isogram and described the second glutenite percentage composition isogram.
It should be noted that, the glutenite percentage composition value of different times is that the fineness by glutenite distinguishes, by detailed contrast with calculate to obtain the glutenite percentage composition in each place of different times, finally according to the glutenite percentage composition in each place of different times, be depicted as glutenite percentage composition isogram more again.Wherein, refer to two periods of morning and evening in relative water depth amplitude of variation in the first period and the second period.Concrete, glutenite percentage composition value is the ratio of the glutenite cumulative thickness of assigned address and the stratum cumulative thickness of this position, the ratio of the glutenite cumulative thickness of every mouthful of well and the stratum cumulative thickness of this position namely, certainly, in the contemporaneity that glutenite cumulative thickness and stratum cumulative thickness refer to, namely with need to calculate in two periods of morning and evening of relative water depth amplitude of variation.The glutenite percentage composition value drawn by the well of diverse location is depicted as glutenite percentage composition isogram, more can obtain sediment horizontal-extending distance by the glutenite percentage composition isogram in two periods of contrast morning and evening.
Glutenite percentage composition isogram reacted by the content of the glutenite of being grown in the territorial scope of measuring and calculating relative water depth amplitude of variation number, and the sediment at edge, lake or seashore edge mainly be take glutenite as main, therefore, by the variation of estimation glutenite isoline, can reflect the horizontal-extending distance of edge, lake underwater sediment(s).The establishment of isogram, first needs to collect the rock data that survey region prospect pit drills through, and identifies the rock category in objective interval, judges whether it is glutenite.Then add up respectively the every mouthful of cumulative thickness of glutenite and thickness of this objective interval in prospect pit layer object section, and obtain its ratio, this ratio is the glutenite percentage composition value of every mouthful of prospect pit.According to the well location coordinate of different prospect pits and the glutenite percentage composition value of this prospect pit, utilize graphics software to obtain isogram subsequently.The thickness situation of rock grain size is distinguished and is calculated
The comparison diagram of the glutenite percentage composition isogram in drawn two periods of morning and evening, as shown in Figure 3, wherein, single, the code name of the different prospect pits of shore and digitized representation below thereof, and the location designation of a plurality of points, the edge of black region represents the scope that edge, lake underwater sediment(s) extends, left side a figure represents the scope that water body sediment in darker period is grown, right side b figure represents the more shallow scope that is of water body, dotted line is about to scope in b figure and extends to a figure and contrast, in a figure, two solid lines represent that respectively the depth of water is high, the sediment scope of low different times, measure in the drawings the underwater sediment(s) horizontal-extending change of distance value on map, engineer's scale during again in conjunction with drawing, just can convert and obtain sediment horizontal-extending distance X.
The ancient gradient of slope belt can calculate as follows:
Obtain the particle diameter mean value of deposited particles;
According to the water channel sediment residual thickness in ancient times measuring, calculate the paleochannel degree of depth;
According to described particle diameter mean value and the ancient gradient of paleochannel depth calculation slope belt.
Its computing formula is S=0.141 * D
50* d
-1;
Wherein, S is the ancient gradient of slope belt, D
50for the particle diameter mean value of deposited particles, d is the paleochannel degree of depth
First the calculating of the ancient gradient of slope belt will use St.Venant formula (St.Venantequation):
This equation has been described the flowing law of fluid in water channel.Wherein, u is x direction (downbeam) speed, v is y direction (perpendicular flow direction) speed, t is the time, σ is physical features height above sea level (topographic elevation), and d is the paleochannel degree of depth, and τ is that shear stress (is the shear stress at particle and fluid contact interface, act on particle surface τ hereinafter
0, τ
*the shear stress that is similarly particle and fluid contact interface, acts on particle surface).
By this equation simplification: suppose that the water channel degree of depth is constant,
another speed keeps constant again, neither temporal evolution, also not with change in location, can obtain thus
(1) formula becomes
meanwhile, due to
wherein, S is the ancient gradient of slope belt, so
τ＝ρgdS，(2)；
(2) formula has shown that the particle that is handled upside down in water channel water body reaches the mechanical balance state under steady state of motion, and gravity reaches and equates with the shear stress (interior friction) at fluid contact interface with particle along the component of slope direction.Due to mechanical balance, make particle stop motion and realize deposition.Therefore,, if can estimate the size of shear stress, can calculate the gradient.
Shear stress τ under Parker (1978) proposition equilibrium state and the initial shear stress (critical shear stress) of particle carrying exist such relation:
τ＝(1+ε)τ
0，(3)
τ wherein
0for the initial shear stress of particle carrying, ε is theoretical value 0.2.Parker thinks, the shear stress that movement of particles is subject to (interior friction) is when meeting being related to shown in (3) formula, and τ value has reached its maximal value, in this case, water channel self can be set up a kind of mechanism of mobile equilibrium, makes particle form gradually deposition.So (3) formula of utilization can be tried to achieve the shear stress under equilibrium state by initial shear stress.
Initially the estimation of (critical) shear stress can be introduced the concept of critical Shields shear stress.Cronin et al. (2007) points out that critical Shields shear stress is defined as the initial shear stress of movement of particles and the ratio of particle mean size intermediate value,
Wherein, τ
*for critical Shields shear stress, τ
0for movement of particles initial shear stress, ρ
sfor particle density (glutenite density range 2.3～2.7), ρ is fluid density (water is 1), D
50for particle mean size intermediate value (particle diameter mean value).Work as τ
*while reaching critical value, there is transportation in particle.About τ
*value, choose the empirical value 0.062 of experimental study herein.
Simultaneous formula (2), (3), (4), can obtain
By ρ
s, ρ, ε, τ
*substitution (5) respectively, calculates gradient computing formula
s＝0.141×D
50×d
-1，(6)；
Therefore, as long as measure the mean grain size mean value D of study area
50with paleochannel depth d, the ancient gradient S of slope belt can draw so.
In order to measure more accurately the particle diameter mean value D of deposited particles
50, can use surveying instrument to replace traditional direct metering system (artificial ruler is measured).Consider the consuming time long of apparatus measures mode, and cost is higher than artificial direct metering system, therefore, the particle diameter mean value of deposited particles measuring and calculating mode is as follows simultaneously:
Obtain a plurality of deposited particles;
Adopt the mode of directly measuring to measure the particle diameter of each deposited particles;
If the particle diameter of deposited particles is less than default limit value, adopts the mode of apparatus measures to measure the particle diameter of this deposited particles, and obtain direct measured value as grain diameter measurement value;
If the particle diameter of deposited particles is not less than default limit value, using the direct measured value obtaining as grain diameter measurement value;
According to the described grain diameter measurement value of each deposited particles, calculate particle diameter mean value.
By the deposited particles of different sizes are selected to different metering systems, improved the degree of accuracy of the particle diameter of the deposited particles measuring, and then made the relative water depth amplitude of variation that calculates by this value more accurate.Also the prolongation of Measuring Time and the increase of cost having avoided using apparatus measures simply simultaneously and caused, avoided again the difficulty that only relies on instrumental analysis to cause coarse grain particle to measure.Preferably, default limit value is 10mm, can will distinguish by the easy Measurement accuracy of direct metering system and the deposited particles that is not easy Measurement accuracy like this.And effectively raise the speed of measurement.Preferably, instrument comprises: laser particle analyzer and optical microscope.
Adopt the mode of apparatus measures to comprise the particle diameter measurement of this deposited particles:
Pulverizing is with the rock sample of deposited particles, and the particle size that makes described deposited particles is 0.5-1.5mm, and preferably, particle size is 1mm left and right;
Rock sample after pulverizing is placed in to the H that concentration is 10%-20%
2o
2in solution, and default a period of time of heating water bath, to remove organic matter, preferably, H
2o
2solution concentration is 15%, and default a period of time is about 10 minutes;
Taking-up is placed in H
2o
2rock sample in solution, and this rock sample is placed in to the hydrochloric acid solution that concentration is 5%-15%, until rock sample is without Bubble formation, preferably, concentration of hydrochloric acid solution is 10%, to remove cementing matter;
Taking-up is placed in the rock sample of hydrochloric acid solution, and removes the H on rock sample
2o
2solution and hydrochloric acid solution, process like this, is conducive on the one hand the grinding to sample in operation below, also can prevent that watery hydrochloric acid from causing damage to instrument;
Grind described rock sample, to obtain independently deposited particles;
Use laser particle analyzer to measure the particle diameter of deposited particles.
So far, testing sample is prepared complete, puts it in laser particle analyzer, can directly read granule size, has also avoided the accuracy of impurity interferometry, just can measure the particle diameter of measuring accurately deposited particles.
The degree of depth of paleochannel is to utilize the sedimental residual thickness of water channel in ancient times to measure.Because the water volume flow rate of water channel ability very fast, transported deposit thing is stronger, the sediment therefore forming in water channel mostly is the rock type that granularity is thick, particle is larger.But the growth of water channel has the feature often changing its course, after changing its course, because flow velocity weakens, transporting capacity weakens, the sediment now forming mostly is the rock type that granularity is thin, particle is less.So, regular the changing its course of water channel, the rock type that has caused drilling well to obtain exists coarse grain and the longitudinal mutual feature of growing of particulate rock.We can obtain the thickness of the water channel deposition in certain period, and the thickness of water channel deposition can roughly reflect the degree of depth of paleochannel by measuring the growth thickness of coarse grain rock folded between twice particulate rock.On this basis, measure the paleochannel degree of depth of many phases growths, and ask for its mean value, with this, obtain the paleochannel degree of depth, carry out calculating subsequently.
In order to calculate more accurately water channel sediment residual thickness in ancient times,
Can first measure the thickness of coarse grain deposition of many phases; Calculate again the mean value of coarse grain deposition described in many phases as water channel sediment residual thickness in ancient times.
Sedimental residual thickness can be reacted the degree of depth of the paleochannel that forms deposition period indirectly, by adding up the thickness of coarse particle deposition of many phases in the underground rock sample drilling through, measures the paleochannel degree of depth.The feature of loke shore water channel deposition is that water channel of many phases longitudinally superposes, coarse grain deposition in lithological sequence represents water channel deposition, and between each issue coarse grain water channel, all have fine-grained sediment as interval, therefore, should add up the thickness of each issue coarse grain deposit development, then ask for its mean value and deposit average residual thickness as water channel, and then calculate the depth d of paleochannel, then according to the particle diameter mean value D of deposited particles
50calculate the ancient gradient S of slope belt with paleochannel depth d.
As shown in Figure 4, after calculating sediment horizontal-extending distance X and S, according to following formula, calculate relative water depth amplitude of variation;
H＝X×S
Wherein H is relative water depth amplitude of variation, and X is sediment extended distance under water, and S is the ancient gradient of slope belt.As shown in Figure 4, the tangent value of angle a is the ancient gradient S of slope belt.
The computing method of the relative water depth amplitude of variation that the embodiment of the present invention provides, by utilizing the glutenite percentage composition in a plurality of places to calculate sediment horizontal-extending distance, due to glutenite be bury underwater, can not suffer erosion, so just, avoided because sediment above water is easily degraded, and the measurement causing is inaccurate; And by having improved the particle diameter mean value D of measuring and calculating deposited particles
50mode, used the mode of apparatus measures that the accuracy of the data that measure has been improved.And then the reliability that makes to calculate sediment horizontal-extending distance is stronger, and then make the accuracy of the relative water depth amplitude of variation that calculates by the ancient gradient of slope belt and sediment horizontal-extending distance stronger.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the computing method of relative water depth amplitude of variation, is characterized in that, comprising:
According to the glutenite percentage composition value in a plurality of places, calculate sediment horizontal-extending distance;
Obtain and the slope belt ancient gradient of described sediment horizontal-extending apart from same position;
According to the ancient gradient of described slope belt and described sediment horizontal-extending apart from calculating relative water depth amplitude of variation.
2. the computing method of relative water depth amplitude of variation according to claim 1, is characterized in that, the described glutenite percentage composition value according to a plurality of places is calculated sediment horizontal-extending distance and comprised:
According to first period a plurality of places glutenite percentage composition value draw the first glutenite percentage composition isogram;
According to the glutenite percentage composition value in a plurality of places described in the second period, draw the second glutenite percentage composition isogram;
According to described the first glutenite percentage composition isogram and described the second glutenite percentage composition isogram, calculate sediment horizontal-extending distance.
3. the computing method of relative water depth amplitude of variation according to claim 2, is characterized in that, also comprise: measure the glutenite cumulative thickness of assigned address and the stratum cumulative thickness of this position;
According to the ratio of described glutenite cumulative thickness and described stratum cumulative thickness, obtain the described glutenite percentage composition value of described assigned address.
4. the computing method of relative water depth amplitude of variation according to claim 1, is characterized in that, also comprise:
Obtain the particle diameter mean value of deposited particles;
According to the water channel sediment residual thickness in ancient times measuring, calculate the paleochannel degree of depth;
According to described particle diameter mean value and the ancient gradient of paleochannel depth calculation slope belt.
5. the computing method of relative water depth amplitude of variation according to claim 4, is characterized in that, described, also comprise before obtaining the particle diameter mean value of deposited particles:
Obtain a plurality of deposited particles;
Adopt the mode of directly measuring to measure the particle diameter of each deposited particles;
If the particle diameter of deposited particles is less than default limit value, adopts the mode of apparatus measures to measure the particle diameter of this deposited particles, and obtain direct measured value as grain diameter measurement value;
If the particle diameter of deposited particles is not less than default limit value, using the direct measured value obtaining as grain diameter measurement value;
According to the described grain diameter measurement value of each deposited particles, calculate particle diameter mean value.
6. the computing method of relative water depth amplitude of variation according to claim 5, is characterized in that, described instrument comprises: laser particle analyzer and optical microscope.
7. the computing method of relative water depth amplitude of variation according to claim 4, is characterized in that, also comprise:
Measure the thickness of coarse grain deposition of many phases;
Calculate the mean value of coarse grain deposition described in many phases as water channel sediment residual thickness in ancient times.
8. the computing method of relative water depth amplitude of variation according to claim 4, is characterized in that, also comprise: according to following formula, calculate the ancient gradient of slope belt:
S＝0.141×D
50×d
-1
Wherein, S is the ancient gradient of slope belt, D
50for the particle diameter mean value of deposited particles, d is the paleochannel degree of depth.
9. the computing method of relative water depth amplitude of variation according to claim 1, is characterized in that, according to following formula, calculate relative water depth amplitude of variation;
H＝X×S
Wherein H is relative water depth amplitude of variation, and X is sediment horizontal-extending distance, and S is the ancient gradient of slope belt.
10. the computing method of relative water depth amplitude of variation according to claim 5, is characterized in that, adopt the mode of apparatus measures to comprise the particle diameter measurement of this deposited particles:
Pulverizing is with the rock sample of deposited particles, and the particle size that makes described deposited particles is 0.5-1.5mm;
Rock sample after pulverizing is placed in to the H that concentration is 10%-20%
2o
2in solution, and default a period of time of heating water bath;
Taking-up is placed in H
2o
2rock sample in solution, and this rock sample is placed in to the hydrochloric acid solution that concentration is 5%-15%, until rock sample is without Bubble formation;
Taking-up is placed in the rock sample of hydrochloric acid solution, and removes the H on rock sample
2o
2solution and hydrochloric acid solution;
Grind described rock sample, to obtain independently deposited particles;
Use laser particle analyzer to measure the particle diameter of deposited particles.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218974.7A CN103969698B (en) | 2014-05-22 | 2014-05-22 | Relative water depth rangeability calculation method |
| CN201610917779.2A CN106501139A (en) | 2014-05-22 | 2014-05-22 | The mean particle size measuring method of deposited particles |
| CN201610917774.XA CN106383368B (en) | 2014-05-22 | 2014-05-22 | Deposit horizontal extension distance calculating method |
| CN201610917789.6A CN106383369A (en) | 2014-05-22 | 2014-05-22 | Slope belt ancient slope calculation method |
| HK17104931.5A HK1231563A1 (en) | 2014-05-22 | 2017-05-17 | A method for calculating horizontal extension distance of sediment |
| HK17104936.0A HK1231554A1 (en) | 2014-05-22 | 2017-05-17 | Method for measuring average particle size value of sediment particles |
Applications Claiming Priority (1)
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| CN106019401A (en) * | 2016-05-06 | 2016-10-12 | 中国地质大学（北京） | Quantitative recovery method and apparatus for paleo-water depth |
| CN109856681A (en) * | 2019-01-08 | 2019-06-07 | 西南石油大学 | It is a kind of description water channel along source direction metamorphosis process analysis method |
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| CN107620036B (en) * | 2017-09-14 | 2019-11-26 | 中国科学院合肥物质科学研究院 | The method for preparing detection substrate film using ion sputtering process |
| CN108629130B (en) * | 2018-05-10 | 2019-09-24 | 山东科技大学 | The method for determining the control Lu Yuan dispersed organic matter distribution delta regime outer rim gradient |
| CN109374867B (en) * | 2018-12-21 | 2021-07-06 | 青岛科技大学 | Gravel hydraulic fracturing simulation method based on discrete elements |
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| CN109856681B (en) * | 2019-01-08 | 2020-10-16 | 西南石油大学 | Process analysis method for describing morphological change of water channel along direction of material source |
Also Published As
| Publication number | Publication date |
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| CN106383368B (en) | 2018-10-26 |
| CN103969698B (en) | 2017-02-01 |
| HK1231554A1 (en) | 2017-12-22 |
| HK1231563A1 (en) | 2017-12-22 |
| CN106383368A (en) | 2017-02-08 |
| CN106383369A (en) | 2017-02-08 |
| CN106501139A (en) | 2017-03-15 |
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