CN107575218A - A kind of method for quickly judging rich organic matter maturation shale and application - Google Patents
A kind of method for quickly judging rich organic matter maturation shale and application Download PDFInfo
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- CN107575218A CN107575218A CN201710778384.3A CN201710778384A CN107575218A CN 107575218 A CN107575218 A CN 107575218A CN 201710778384 A CN201710778384 A CN 201710778384A CN 107575218 A CN107575218 A CN 107575218A
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Abstract
The invention provides a kind of method for quickly judging rich organic matter maturation shale and application, the method that the present invention quickly judges rich organic matter maturation shale, only by judge in shale whether level distribution calcite veins body, with regard to that can judge to show whether the shale is rich organic matter maturation shale, being capable of Quick richness organic matter maturation shale, eliminate and largely change testing expense, the time required to having saved exploration decision, the ripe shale of rich organic matter can be identified in the case where not destroying rock core simultaneously, protect costly rock core, it is convenient to carry out follow-up other necessary tests.The present invention quickly judges that the method for rich organic matter maturation shale can be used in shale petroleum exploration domain, and easy to operate, cost is low, can be the exploration of oil and gas reservoir, there is provided fast and accurately basis for estimation.
Description
Technical field
The present invention relates to oil-gas exploration technical field, quickly judges rich organic matter maturation shale in particular to one kind
Method and application.
Background technology
Rich organic matter maturation shale refer to total organic carbon TOC more than 2% (mass fraction), reflectance of vitrinite Ro exists
More than 0.6% shale.In conventional gas and oil exploration, most hydrocarbon source rocks are all rich organic matter maturation shale.Page in recent years
Shale oil gas exploration also indicates that rich organic matter maturation shale is the basis to form shale oil and gas reservoir.According to International Energy Agency (EIA)
The statistics of 2016, at present 10 maximum shale oil-gas reservoirs of the whole world belong to rich organic matter maturation shale.Therefore, identify
Rich organic matter maturation shale is of great significance for routine or unconventionaloil pool exploration all tools.
At present, identify that rich organic matter maturation shale relies on substantial amounts of geochemical testing in correlation technique, idiographic flow is such as
Under：1) correct position drilling well is selected in basin, extracts shale samples from well, 2) TOC tests are carried out to sample, measure is organic
Matter abundance, 3) to tests such as organic matter progress reflectances of vitrinite of sample, to determine maturity of organic matter.
In correlation technique, identifying the method for rich organic matter maturation shale needs substantial amounts of test sample, involved evaluation
Parameter is more, but geochemical testing is costly, test period length.During oil exploration, to the well newly bored and acquisition
Rock core, it is often necessary to its And Hydrocarbon Potential is quickly judged, to instruct subsequent well to dispose；Especially in the Exploration right of oily company purchase
In the case of the time limit is shorter, this efficiently decision-making is with regard to particularly important.Existing evaluation method, it can not meet above-mentioned quick, economically
Find the demand of favorable exploration object.
In addition, identify that the method for rich organic matter maturation shale needs to carry out a variety of geochemical testings in correlation technique, and
Each groundization test is required to from core column from taking out a number of sample.Drilling through for rock core is costly, at a rough estimate,
The cost for often taking 1 meter is ten thousand yuan of 2-5.However, these samples taken out are just consumed after a test, so as to give follow-up rock
The heart is observed and other necessary calibration tapes carry out expendable influence.Therefore, it should reduce groundization test as far as possible, protect rock core
Sample.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of method for quickly judging rich organic matter maturation shale, and this method can
Quick richness organic matter maturation shale, eliminates and largely changes testing expense, the time required to having saved exploration decision, simultaneously
The ripe shale of rich organic matter can be identified in the case where not destroying rock core, protects costly rock core, it is convenient to carry out
Follow-up other necessary tests.
The second object of the present invention is to provide a kind of answering for method of described quick judgement richness organic matter maturation shale
With the method for described quick judgement richness organic matter maturation shale can be used in shale petroleum exploration domain, easy to operate, cost
It is low, can be the exploration of oil and gas reservoir, there is provided fast and accurately basis for estimation.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of method for quickly judging rich organic matter maturation shale, including：By judge in shale whether level distribution side
Stone arteries and veins body is solved, judges whether the shale is rich organic matter maturation shale；
As there is horizontal calcite veins body to be distributed in shale, then the shale is rich organic matter maturation shale.
The method that the present invention quickly judges rich organic matter maturation shale, only by judging whether level distribution side solves in shale
Stone arteries and veins body, just can judge to show whether the shale is rich organic matter maturation shale, can Quick richness organic matter maturation shale,
Eliminate and largely change testing expense, the time required to having saved exploration decision, while can know in the case where not destroying rock core
Do not go out the ripe shale of rich organic matter, protect costly rock core, it is convenient to carry out follow-up other necessary tests.
Alternatively, it is described to judge in shale whether before level distribution calcite veins body, drilling well, to obtain shale samples, well logging
Data and well-log information.
Alternatively, if rock core interval shale is included in acquired shale samples, by observing rock core interval shale
Inside whether level distribution calcite veins body, judge whether the shale is rich organic matter maturation shale；
As there is horizontal calcite veins body to be distributed in rock core interval shale, then the shale is rich organic matter maturation shale.
Alternatively, if not including rock core interval shale in acquired shale samples, observe well logging in whether the side of having
Stone crystal is solved, and horizontal calcite veins body is judged whether by well log interpretation, determines whether the shale is rich
Machine matter maturation shale；
As it is observed that calcite crystal, simultaneous logging, which is explained, can reflect horizontal calcite veins interval, then in well logging
The shale is rich organic matter maturation shale.
Alternatively, it is bent to include interval transit time curve, density log curve and depth microelectrode resistivity for the well log interpretation
One or more in line.
Alternatively, the well log interpretation is with reference to interval transit time curve, density log curve and depth microelectrode resistivity
Curve.
Alternatively, it is described to judge whether the shale is progress confirmatory experiment analysis after rich organic matter maturation shale.
Alternatively, the confirmatory experiment analysis includes geochemical testing analysis.
Alternatively, analyzed by the geochemical testing, obtain abundance of organic matter data and maturity of organic matter data,
Whether it is that the conclusion of rich organic matter maturation shale is verified to the shale.
Application of a kind of above-mentioned method for quickly judging rich organic matter maturation shale in oil-gas exploration.
The present invention quickly judges that the method for rich organic matter maturation shale can be used in shale petroleum exploration domain, operation letter
Just, cost is low, can be the exploration of oil and gas reservoir, there is provided fast and accurately basis for estimation.
Compared with prior art, beneficial effects of the present invention are：
The method that the present invention quickly judges rich organic matter maturation shale, only by judging whether level distribution side solves in shale
Stone arteries and veins body, just can judge to show whether the shale is rich organic matter maturation shale, can Quick richness organic matter maturation shale,
Eliminate and largely change testing expense, the time required to having saved exploration decision, while can know in the case where not destroying rock core
Do not go out the ripe shale of rich organic matter, protect costly rock core, it is convenient to carry out follow-up other necessary tests.It is of the invention fast
Speed judges that the method for rich organic matter maturation shale can be used in shale petroleum exploration domain, and easy to operate, cost is low, can be oil
The exploration of gas reservoir, there is provided fast and accurately basis for estimation.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the superpressure situation map that low compaction is formed.
Fig. 2 makes a living oil pressure change curve.
Fig. 3 is to be buried from deposit to natural gas generating process mesopore evolutionary pattern figure.
Fig. 4 is the pressure variation caused by kerogen anger.
Fig. 5 is the reflectance of vitrinite and TOC of interval rock core where the flat calcite veins of 1 N of well water of page 1 of the embodiment of the present invention
Characteristic figure.
Fig. 6 is the features of logging curve datagram of interval where the flat calcite veins body of 2 Ns of well water of page 1 of the embodiment of the present invention.
Embodiment
Technical scheme is clearly and completely described below in conjunction with the drawings and specific embodiments, but
Be it will be understood to those of skill in the art that following described embodiment is part of the embodiment of the present invention, it is rather than whole
Embodiment, the present invention is merely to illustrate, and is not construed as limiting the scope of the present invention.Based on the embodiment in the present invention, ability
The every other embodiment that domain those of ordinary skill is obtained under the premise of creative work is not made, belongs to guarantor of the present invention
The scope of shield.Unreceipted actual conditions person in embodiment, the condition suggested according to normal condition or manufacturer are carried out.Agents useful for same
Or the unreceipted production firm person of instrument, it is the conventional products that can be obtained by commercially available purchase.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The specific embodiment of the invention provides a kind of method for quickly judging rich organic matter maturation shale, including：Pass through
Judge in shale whether level distribution calcite veins body, judge whether the shale is rich organic matter maturation shale；
As there is horizontal calcite veins body to be distributed in shale, then the shale is rich organic matter maturation shale.
The method that the present invention quickly judges rich organic matter maturation shale, only by judging whether level distribution side solves in shale
Stone arteries and veins body, just can judge to show whether the shale is rich organic matter maturation shale, can Quick richness organic matter maturation shale,
Eliminate and largely change testing expense, the time required to having saved exploration decision, while can know in the case where not destroying rock core
Do not go out the ripe shale of rich organic matter, protect costly rock core, it is convenient to carry out follow-up other necessary tests.
Calcite veins body is the stage of burying diagenetic product.Shale fine size, clay content are high, during burying
Easily it is compacted and becomes fine and close, its internal interstitial space is not enough to storage level calcite.It is therefore desirable to have some mechanism
Horizontal microcrack is formed burying stage induction shale, reservoir space is provided for horizontal calcite veins.In sedimentary basin, 3 kinds
Stress co- controlling tectonic stress field, it is respectively：1) vertical principal stress (Sv), 2) maximum horizontal principal stress (SH), 3) minimum water
Flat principal stress (Sh).In atmospheric conditions, 3 stress of the above show as Sv>Sh.However, the formation of horizontal fracture must is fulfilled for Sv
<ShCondition.It is therefore desirable to have Formation overpressure offsets part burden pressure, make Sv<Sh。
The pressuring mechanism of shale has 3 kinds, is respectively：1) construction extruding, 2) low compaction, the 3) life of the ripe organic matter of heat
Hydrocarbon acts on.However, first two mechanism is unable to induced levels crack, reason is as follows.
Anderson theory (Anderson ' s Theory) controls the cracking initiation under tectonism.According to the theory,
S under normal pressurev>SH>Sh, the normal fault at 60 ° or so of inclination angle of formation；In the case where being acted on by horizontal pressure force, stress field may be changed into SH>
Sh>Sv, form 30 ° or so of inclination angle formation reversed fault；The S in the case where walking sliding stress backgroundH>Sv>Sh, form 90 ° or so of inclination angle walks cunning
Tomography.But the theory can not interpretation level crack formation, this explanation horizontal fracture be not construction extruding product.
The abnormal pressure that low compaction is formed has following characteristics.Assuming that no fluid overflows, low compaction is formed
Pore pressure can along the direction parallel with quiet rock gradient be incremented by (as shown in Figure 1).Assuming that the internal flow one of overpressured mudstone
Point does not also ooze out, and the superpressure curve of mud stone will be with lithostatic pressure oriented parallel.However, rock is unlikely to be in practical situations both
It is completely impermeable, so as to inevitable that some fluids spilling, causes this slope of a curve to increase.Therefore, it is under-voltage
Implementation can exceed that lithostatic pressure (Fig. 1) with the abnormal pressure formed at no time.Formation for horizontal fracture, this
The pressure that kind abnormal overpressure is formed needs to be more than overlying formation pressure, and this explanation is not likely to form horizontal fracture in the case.
Substantial amounts of rock core and outcrop observation example show organic matter maturation hydro carbon-generation can largely induced synthesis level it is micro-
Crack.During hot ripe organic matter life residence, oil gas molecule can form upward seepage flow in outside flow process
Power.With the gradual increase of mud stone pore pressure, the seepage force may exceed overlying formation pressure, make mud stone on vertical
Stress is from being expressed to tension, and effective stress Mohr's circle constantly increases.Due to the horizontal stress (σ under the conditions of Jing Yanh) with it is vertical
Stress (σv) there is certain proportionate relationship (- σh=-keσv, ke=1/3-1/2), now vertical tensile stress should for minimum master
Power.As mohr circle of stress gradually increases, it can be tangent with rupture enveloping surface, causes rock rupture, forms horizontal microcrack.
Therefore, the ripe organic matter of heat is the necessary condition to form the microcrack for preserving horizontal calcite veins, therefore level side
Xie Shimai indicates the shale of hot maturation.
Only hot ripe condition is not enough to the horizontal microcrack of induced synthesis, and rich organic matter is also to form horizontal microcrack
Essential condition.The content of organic matter determines computing hydrocarbon generating quantity of source, it is clear that the content of organic matter is higher, and the hydro carbons of generation is more, shape
Into abnormal pressure it is bigger, the microcrack of easier induced synthesis storage level calcite veins body.The ripe hydrocarbon source rock of heat includes
Two kinds of situations of generative window and gas-generating window, because oil generation and angry effect belong to different phase, evolution Feature there is also larger difference,
Here expansion is discussed respectively.
Oil generation calculation of pressure formula, first calculates kerogenic conversion ratio, then calculates the kerogen of conversion to pore pressure
Influence, it is specific as follows：
Kerogen is with time and the conversion ratio of depth
F=1-exp [- Φ (t)]；
Convert influence of the kerogen to pore pressure：
Wherein, ck=kerogenic compression ratio；coThe compression ratio of=oil；cwThe compression ratio of=water；cpThe pressure of=interstitial space
Shrinkage；G=acceleration of gravity；The exponential constant of A=the Arrhenius Equations；D=is P in pressureiWhen kerogen with oil it is close
Degree ratio；The activation energy of the order reactions of E=first；Exp (E/RT)=exponential integral；The kerogenic conversion ratios of F=；H=temperature changes
Speed；The increased pore pressures of P=；R=gas constants；The temperature of T=hydrocarbon source rocks；T0The surface temperature of=deposit；(t)=
The time integral of oil generation speed；ρk=kerogen density；ρoThe density of=oil；ρr=rock density.
Calculated using above-mentioned formula, find when TOC be more than 2% when can induced synthesis preserve horizontal calcite veins institute
The microcrack (as shown in Figure 2) needed.As can be seen from Figure 2, the abnormal pressure that hydrocarbon is formed at TOC=2% (mass fraction)
It is enough to offset overlying formation pressure, horizontal microcrack can be formed；The exception that hydrocarbon is formed at TOC=1% (mass fraction)
Pressure is less than lithostatic pressure, it is impossible to forms horizontal microcrack.
This motion is simulated according to cracking gas hydrocarbon-generating dynamics equation and hydro carbons anger process mesopore equation of change (Fig. 3)
The angry calculation of pressure formula of ripe gas-generating window.The simulated experiment is from pore evolution, the kinetic model of Oil-splited gas, Yi Jisheng
3 steps of hydrocarbon pressure change are carried out.Fig. 3 is simplified to Pore Evolution Models, and wherein A represents the feelings of no natural gas generation
Condition, B indicate the situation of natural gas generation, it is assumed that 1., 2., 3., 4. pore evolution undergoes successively, its petrochina is disposably formed
In 2. locating, then 4. locating oil, disposably cracking forms natural gas.
3. locating,
Wherein,For rock density, Vo3For oil volume,From 1. to 3., the remaining hole after compaction,Refer to makes the increased hole of rock, and the remaining part after compaction in 2. place's oil generation effect；
Pore evolution rule meets following changing rule：
Wherein, K is compacted constant,For the porosity 1. located,Make the increased porosity of rock 2. to locate oil generation effect,
Z2And Z3It is the buried depth 2. and 3. located respectively.
From 3. to 4., oil-breaking forms natural gas and pitch.Pitch reduces porosity：
ΔVc=R (1-F) Mo3/ρk(5)；
Wherein, Δ VcThe hole that pitch is reduced, the ratio of R cracked oils are formed, F is that can be cracked in the oil of unit quality
Oily ratio (for example, 1g oil-breakings form 0.6g natural gases, then R=0.6), Mo33. to locate the quality of oil, ρkIt is kerogen
Density.
Oil-breaking forms natural gas (C1-C4) and pitch.
4. locating, gas volume is represented by：
Vg=Vga+Vgb+Vgc+Vgd(7)；
Wherein, Vga, Vgb, Vgc, VgdIt is the volume of methane, ethane, propane and butane respectively.Methane, ethane, propane and fourth
Alkane is relevant with respective relative molecular mass.
P=Pa+Pb+Pc+Pd (8)；
Wherein PA、PB、PC、PDIt is the abnormal pressure that methane, ethane, propane, butane are formed respectively.
Natural gas in shale obeys following rule：
Pa=MaT4ba/(2930ρaVga-MaT40.2173aa) (9)；
aa=0.0218 (T4/Ta)2-0.1245T4/Ta+0.2091 (10)；
ba=-0.2315 (T4/Ta)2+1.333T4/Ta–1.0634 (11)；
Wherein, Ma, ρa, TaThe respectively density of methane, quality and stagnant temperatures, T4For the temperature 4. located.Pb、Pc、PdWith
Same method is calculated and learnt.Mb, ρb, TbThe respectively density of ethane, quality and stagnant temperatures, Mc, ρc, TcRespectively propane is close
Degree, quality and stagnant temperatures, Md, ρd, TdThe respectively density of butane, quality and stagnant temperatures.
The formation condition of horizontal microcrack is：
Ph+P>Pv(12)；
Wherein, PhThe superpressure formed for hydrostatic pressure, P after being generated for natural gas, PvFor lithostatic pressure.
Calculated here with the formula, the results showed that in TOC>Horizontal microcrack can be formed under conditions of 2%, and
In TOC<Horizontal microcrack (as shown in Figure 4) can not be formed under conditions of 2%.As can be known from Fig. 4, as TOC=2%
The abnormal pressure that the angry effects of 7.5km are formed reaches lithostatic pressure, can form horizontal microcrack；It is angry as TOC=1% to make
Always it is less than lithostatic pressure with the abnormal pressure of formation, it is impossible to form horizontal microcrack.
In a kind of preferred embodiment of the present invention, it is described judge in shale whether level distribution calcite veins body
Before, drilling well, obtain shale samples, log data and well-log information.
In a kind of preferred embodiment of the present invention, if including rock core interval page in acquired shale samples
Rock, then by observe in rock core interval shale whether level distribution calcite veins body, judge the shale whether be rich organic matter into
Ripe shale；
As there is horizontal calcite veins body to be distributed in rock core interval shale, then the shale is rich organic matter maturation shale.
In a kind of preferred embodiment of the present invention, if not including rock core interval page in acquired shale samples
Rock, then observe in well logging whether have calcite crystal, and horizontal calcite veins body is judged whether by well log interpretation, enter one
Step judges whether the shale is rich organic matter maturation shale；
As it is observed that calcite crystal, simultaneous logging, which is explained, can reflect horizontal calcite veins interval, then in well logging
The shale is rich organic matter maturation shale.
In a kind of preferred embodiment of the present invention, the well log interpretation includes interval transit time curve, density log
One or more in curve and depth microelectrode resistivity curve.
In a kind of preferred embodiment of the present invention, the well log interpretation is to be surveyed with reference to interval transit time curve, density
Well curve and depth microelectrode resistivity curve.
It is described to judge whether the shale is rich organic matter maturation shale in a kind of preferred embodiment of the present invention
Afterwards, confirmatory experiment analysis is carried out.
In a kind of preferred embodiment of the present invention, the confirmatory experiment analysis includes geochemical testing analysis.
In a kind of preferred embodiment of the present invention, analyzed by the geochemical testing, it is rich to obtain organic matter
Degrees of data and maturity of organic matter data, whether it is that the conclusion of rich organic matter maturation shale is verified to the shale.
Application of a kind of above-mentioned method for quickly judging rich organic matter maturation shale in oil-gas exploration.
The present invention quickly judges that the method for rich organic matter maturation shale can be used in shale petroleum exploration domain, operation letter
Just, cost is low, can be the exploration of oil and gas reservoir, there is provided fast and accurately basis for estimation.
Specifically, illustrated by taking China's Jiyang depression Eocene series shale as an example.
From 2010 so far, the well of sieve 69, the well of ox page 1, the well of Fan's page 1, the well of sharp page 1 successively have been drilled in Jiyang depression, harvested
1060 meters or so of rock core total length, and the logging data and nutural potential logging, gamma ray log, sound wave of the full well section of each well
The data such as time difference well logging, porosity logging, density log.
Embodiment 1
Lower mask body illustrates by taking the well of ox page 1 as an example.
Whether it is that the judgement of rich organic matter maturation shale comprises the following steps to the well shale of ox page 1：
A. as needed, correct position drilling well is selected, obtains shale samples, log data and well-log information, it is acquired
Contain rock core interval in sample；
B. rock core interval is observed by the naked eye, identifies the acquired flat calcite veins body of rock core interval shale samples reclaimed water.
The flat calcite veins body of rock core interval shale samples reclaimed water is identified easily by macroscopic mode, in dark color
White concordant band in rock core interval shale samples is horizontal calcite veins body.
By observation, judgement, which is drawn in the well rock core interval shale samples of ox page 1, contains horizontal calcite veins body, illustrates the page
Rock is rich organic shale.
Further, using core data obtained by the well of ox page 1, geochemical testing analysis is carried out, above-mentioned is sentenced to verify
Disconnected accuracy.Wherein, reflectance of vitrinite, TOC method of testing and equipment are shown in that Zhao et al. (2014) are published in
Marine and Petroleum Geology volumes 51 article Organic geochemistry and reservoir
characterization of the organic matter-rich calcilutite in the Shulu Sag,
Bohai Bay Basin, North China. results show the interval reflectance of vitrinite (Ro) 0.6% or so, and TOC contains
Amount be all higher than 2% (as shown in figure 5, the well of ox page 1,3360-3376m, the aqueous flat calcite veins body of the interval), be rich organic matter into
Ripe shale, it is consistent with using judgement conclusion obtained by the inventive method, it is rich to illustrate that the inventive method can quick and precisely be judged
Machine matter shale.
Embodiment 2
Lower mask body still illustrates by taking the well of ox page 1 as an example.
Whether it is that the judgement of rich organic matter maturation shale comprises the following steps to the well shale of ox page 1：
A. as needed, correct position drilling well is selected, obtains sample, log data and well-log information, acquired sample
In and do not contain rock core interval.
Further, horizontal calcite veins are identified using log data and well-log information.The landwaste money collected in well logging
Although material has crushed, for the horizontal calcite veins body after broken, remain to find some particulates from landwaste data
The crystal of shape.The landwaste data collected is observed under naked eyes, determines the presence of calcite veins body.
At the same time, using well log interpretation data also can determined level calcite veins body presence.Due to horizontal calcite
Interval where arteries and veins body belongs to abnormal pressure environment, and it is high level (Fig. 6) to make its interval transit time curve.Meanwhile horizontal calcite veins body
The higher porosity of place interval (abnormal high pressure well sector hole porosity is higher) and higher TOC contents make its density relatively low, so as to
Density curve is low value (Fig. 6).In addition, the horizontal microcrack of interval extensive development makes the micro- electricity of the depth where horizontal calcite veins body
Electrode resistance rate curve separates (Fig. 6).Integrated use interval transit time curve, density log curve, depth microelectrode resistivity curve
It can determine that the interval where horizontal calcite veins.
Interval (the lines mark layer section institute under lithology in Fig. 6 of the flat calcite veins of water outlet is can interpolate that according to the above method
Show), it is rich organic shale to illustrate the well shale of ox page 1.
Further, using core data obtained by the well of ox page 1, geochemical testing analysis is carried out, above-mentioned is sentenced to verify
Disconnected accuracy.Concrete outcome is as described in Example 1.
Comparative example
The present invention is quickly judged that the method for rich organic matter maturation shale is analyzed with prior art by geochemical testing
Method (reflectance of vitrinite and total content of organic carbon that need to detect core sample) carries out the side that rich organic matter maturation shale judges
Method is compared, as a result as shown in table 1：
The inventive method of table 1 and art methods comparative result
It can be seen from Table 1 that the present invention quickly judges the method for rich organic matter maturation shale by directly observing rock core
Or log data, well-log information can recognize that and judge rich organic matter maturation shale, eliminate a large amount of geochemistry test analysis
Expense and test period, it is effectively saved exploration and development time and cost.In addition, the present invention quickly judges rich organic matter maturation page
The method of rock can identify the ripe shale of rich organic matter in the case where not destroying rock core, protect costly rock core,
It is convenient to carry out follow-up other necessary tests.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that various embodiments above is only used
To illustrate technical scheme, rather than its limitations；It will be understood by those within the art that：Without departing substantially from this hair
In the case of bright spirit and scope, the technical scheme described in foregoing embodiments can be modified, or to wherein
Some or all of technical characteristic carries out equivalent substitution；And these are changed or are replaced, the essence of appropriate technical solution is not made
Depart from the scope of various embodiments of the present invention technical scheme；It is, therefore, intended that include belonging to the present invention in the following claims
In the range of all these substitutions and modifications.
Claims (10)
- A kind of 1. method for quickly judging rich organic matter maturation shale, it is characterised in that including：By judging whether divide in shale The flat calcite veins body of water distribution, judge whether the shale is rich organic matter maturation shale；As there is horizontal calcite veins body to be distributed in shale, then the shale is rich organic matter maturation shale.
- 2. a kind of method for quickly judging rich organic matter maturation shale according to claim 1, it is characterised in that described to sentence In disconnected shale whether before level distribution calcite veins body, drilling well, shale samples, log data and well-log information are obtained.
- 3. a kind of method for quickly judging rich organic matter maturation shale according to claim 2, it is characterised in that if institute Rock core interval shale is included in the shale samples of acquisition, then by observe in rock core interval shale whether level distribution calcite veins Body, judge whether the shale is rich organic matter maturation shale；As there is horizontal calcite veins body to be distributed in rock core interval shale, then the shale is rich organic matter maturation shale.
- 4. a kind of method for quickly judging rich organic matter maturation shale according to claim 2, it is characterised in that if institute Rock core interval shale is not included in the shale samples of acquisition, then whether in well logging have calcite crystal, and solved by logging well if observing Release and judge whether horizontal calcite veins body, determine whether the shale is rich organic matter maturation shale；As it is observed that calcite crystal, simultaneous logging, which is explained, can reflect horizontal calcite veins interval, then the page in well logging Rock is rich organic matter maturation shale.
- A kind of 5. method for quickly judging rich organic matter maturation shale according to claim 4, it is characterised in that the survey Well explains the one or more included in interval transit time curve, density log curve and depth microelectrode resistivity curve.
- A kind of 6. method for quickly judging rich organic matter maturation shale according to claim 5, it is characterised in that the survey Well is construed to combine interval transit time curve, density log curve and depth microelectrode resistivity curve.
- 7. according to any a kind of described methods for quickly judging rich organic matter maturation shale of claim 1-6, it is characterised in that It is described to judge whether the shale is progress confirmatory experiment analysis after rich organic matter maturation shale.
- 8. a kind of method for quickly judging rich organic matter maturation shale according to claim 7, it is characterised in that described to test Analysis is tested in confirmation includes geochemical testing analysis.
- 9. a kind of method for quickly judging rich organic matter maturation shale according to claim 8, it is characterised in that pass through institute Geochemical testing analysis is stated, abundance of organic matter data and maturity of organic matter data is obtained, whether is rich in machine to the shale The conclusion of matter maturation shale is verified.
- 10. a kind of method for quickly judging rich organic matter maturation shale as described in the claims in the present invention 1-9 is any is in oil gas Application in exploration.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426859A (en) * | 2018-02-23 | 2018-08-21 | 中国石油大学(华东) | A kind of reflectance of vitrinite prediction model based on overpressure retardation maturity of organic matter |
| CN108564610A (en) * | 2018-04-20 | 2018-09-21 | 中国地质大学（北京） | The computational methods and device at lithosomic body paleocurrent direction angle |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009126609A2 (en) * | 2008-04-07 | 2009-10-15 | Baker Hughes Incorporated | A method for petrophysical evaluation of shale gas reservoirs |
| US20130259190A1 (en) * | 2012-03-29 | 2013-10-03 | Ingrain, Inc. | Method And System For Estimating Properties Of Porous Media Such As Fine Pore Or Tight Rocks |
| CN103645125A (en) * | 2013-10-28 | 2014-03-19 | 北京大学 | Method and system for evaluating seepage capability of dense oil reservoir bed |
| CN104101649A (en) * | 2014-06-17 | 2014-10-15 | 南京大学 | Method for determining content of organic matters in shale by sound velocity |
| CN105298476A (en) * | 2014-07-04 | 2016-02-03 | 中国石油化工股份有限公司 | Method for recognizing volume content of minerals of shale formation |
| CN105651966A (en) * | 2016-01-18 | 2016-06-08 | 山东科技大学 | Shale oil and gas high-quality reservoir stratum evaluation method and parameter determination method |
| CN106841004A (en) * | 2017-01-25 | 2017-06-13 | 中国石油大学(北京) | Shale preserves capacity judging method |
| CN107044279A (en) * | 2017-02-22 | 2017-08-15 | 中国石油大学(北京) | A kind of recognition methods of the favourable interval of shale formation |
-
2017
- 2017-09-01 CN CN201710778384.3A patent/CN107575218A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009126609A2 (en) * | 2008-04-07 | 2009-10-15 | Baker Hughes Incorporated | A method for petrophysical evaluation of shale gas reservoirs |
| US20130259190A1 (en) * | 2012-03-29 | 2013-10-03 | Ingrain, Inc. | Method And System For Estimating Properties Of Porous Media Such As Fine Pore Or Tight Rocks |
| CN103645125A (en) * | 2013-10-28 | 2014-03-19 | 北京大学 | Method and system for evaluating seepage capability of dense oil reservoir bed |
| CN104101649A (en) * | 2014-06-17 | 2014-10-15 | 南京大学 | Method for determining content of organic matters in shale by sound velocity |
| CN105298476A (en) * | 2014-07-04 | 2016-02-03 | 中国石油化工股份有限公司 | Method for recognizing volume content of minerals of shale formation |
| CN105651966A (en) * | 2016-01-18 | 2016-06-08 | 山东科技大学 | Shale oil and gas high-quality reservoir stratum evaluation method and parameter determination method |
| CN106841004A (en) * | 2017-01-25 | 2017-06-13 | 中国石油大学(北京) | Shale preserves capacity judging method |
| CN107044279A (en) * | 2017-02-22 | 2017-08-15 | 中国石油大学(北京) | A kind of recognition methods of the favourable interval of shale formation |
Non-Patent Citations (2)
| Title |
|---|
| PETER R. COBBOLD等: "Bedding-parallel fibrous veins (beef and cone-in-cone): Worldwide occurrence and possible significance in terms of fluid overpressure, hydrocarbon generation and mineralization", 《MARINE AND PETROLEUM GEOLOGY》 * |
| 第五届全国沉积学大会学术委员会等: "《第五届全国沉积学大会论文选集》", 31 October 2013 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426859A (en) * | 2018-02-23 | 2018-08-21 | 中国石油大学(华东) | A kind of reflectance of vitrinite prediction model based on overpressure retardation maturity of organic matter |
| CN108426859B (en) * | 2018-02-23 | 2020-07-07 | 中国石油大学(华东) | Vitrinite reflectivity prediction model based on overpressure inhibition organic matter maturity |
| CN108564610A (en) * | 2018-04-20 | 2018-09-21 | 中国地质大学（北京） | The computational methods and device at lithosomic body paleocurrent direction angle |
| CN108564610B (en) * | 2018-04-20 | 2020-07-14 | 中国地质大学（北京） | Method and device for calculating direction angle of ancient water flow of sediment body |
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Application publication date: 20180112 |