CN107435537A - The method and device that a kind of well logging destination layer divides automatically - Google Patents
The method and device that a kind of well logging destination layer divides automatically Download PDFInfo
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- CN107435537A CN107435537A CN201610357129.7A CN201610357129A CN107435537A CN 107435537 A CN107435537 A CN 107435537A CN 201610357129 A CN201610357129 A CN 201610357129A CN 107435537 A CN107435537 A CN 107435537A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000011435 rock Substances 0.000 claims abstract description 423
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 263
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 224
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 224
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 224
- 230000000704 physical effect Effects 0.000 claims abstract description 155
- 230000003321 amplification Effects 0.000 claims abstract description 59
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 59
- 230000000977 initiatory effect Effects 0.000 claims abstract description 56
- 239000004575 stone Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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Abstract
The invention discloses the method and device that a kind of well logging destination layer divides automatically, this method includes obtaining the stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to each depth point；Calculate and obtain the corresponding base value of stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to each depth point；The corresponding amplification and gaining rate of stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to each depth point are obtained so as to calculate；According to stratum rock physical property index corresponding to each depth point and the corresponding boundary value of formation rock hydrocarbon resistivity index, initiation layer is determined；Based on the peak of formation rock hydrocarbon resistivity index described in initiation layer, destination layer is determined.By the way that instant invention overcomes the defects of the influence of the human factor in the division of well logging destination layer in the prior art and time lag.
Description
Technical field
The present invention relates to oil-gas exploration and development field, is divided automatically more particularly to a kind of well logging destination layer
Method and device.
Background technology
With the development of oil-gas exploration technology, well logging is as an important skill in oil gas drilling development process
Art means, are widely used.And the accurate division of well logging destination layer be in oil gas drilling well logging with
Bore accurate and Fast Evaluation oil-gas Layer basis.
In the prior art, mainly well logging destination layer is divided using following two modes, Yi Zhongfang
Formula be site mud logging technical staff according to when boring, the well logging aggregate data such as landwaste lithology, oil/gas show, knot
The contrast of offset well situation and analysis are closed, according to self-technique experience and ability and to region, underground geological condition
Understanding carry out destination layer division；Another way be in oil-gas exploration after midway finishing drilling or finishing drilling foundation
Corresponding well-log information carries out destination layer division by professional software.
But using the first artificial division method easily by the technical experience and ability, technical merit of people
And the awareness in region, underground geological condition is had a great influence.And use the second way must be in
Destination layer division is carried out after way finishing drilling or finishing drilling, it is impossible in situ of drilling well with drilling row division, time lag
Property is larger.Solve the influence of human factor and lacking for time lag in well logging destination layer division in the prior art
Fall into, have become the main direction of studying of current well logging destination layer division.
The content of the invention
Above mentioned problem is directed to, the present invention provides the method and device that a kind of well logging destination layer divides automatically,
To overcome the influence of human factor and lacking for time lag in well logging destination layer division in the prior art
Fall into.
To achieve these goals, according to the first aspect of the invention, there is provided a kind of well logging destination layer is certainly
The method of dynamic division, this method include：
The formation rock of different depth point in site mud logging is analyzed, obtained corresponding to each depth point
Stratum rock physical property index and formation rock hydrocarbon resistivity index；
According to stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to each depth point, divide
It is hydrocarbonaceous that the base value of stratum rock physical property index and formation rock corresponding to each depth point are not calculated
The base value of index；
According to the base of stratum rock physical property index and stratum rock physical property index corresponding to each depth point
Value, the amplification and formation rock for obtaining stratum rock physical property index corresponding to each depth point are calculated respectively
The gaining rate of stone physical property index；
According to the base of formation rock hydrocarbon resistivity index and formation rock hydrocarbon resistivity index corresponding to each depth point
Value, the amplification and formation rock for obtaining formation rock hydrocarbon resistivity index corresponding to each depth point are calculated respectively
The gaining rate of stone hydrocarbon resistivity index；
By stratum rock physical property index corresponding to each depth point, stratum rock physical property index amplification,
The gaining rate of stratum rock physical property index, formation rock hydrocarbon resistivity index, formation rock hydrocarbon resistivity index amplification and
The gaining rate of formation rock hydrocarbon resistivity index respectively to each depth point corresponding to corresponding preset margin value compared
Compared with filtering out formation rock corresponding to all depth points for meeting the corresponding preset margin value, and determine
For initiation layer；
Wherein, the corresponding preset margin value includes presetting formation rock thing corresponding to each depth point
Sex index boundary value, the amplification boundary value of default stratum rock physical property index, default stratum rock physical property refer to
Several gaining rate boundary value, default formation rock hydrocarbon resistivity index boundary value, default formation rock hydrocarbon resistivity index
The gaining rate boundary value of amplification boundary value and default formation rock hydrocarbon resistivity index；
Formation rock hydrocarbon resistivity index peak in the initiation layer is determined, based on the hydrocarbonaceous finger of the formation rock
Number peak, determines the destination layer.
Preferably, stratum rock physical property index and the formation rock according to corresponding to each depth point
Hydrocarbon resistivity index, be calculated respectively the base value of stratum rock physical property index corresponding to each depth point and
The base value of formation rock hydrocarbon resistivity index, including：
The average value of the stratum rock physical property index corresponding to N number of depth point is calculated, will be described average
It is worth the base value as the stratum rock physical property index, the value of the N is the positive integer more than 20；
The average value of the formation rock hydrocarbon resistivity index corresponding to N number of depth point is calculated, will be described average
It is worth the base value as the formation rock hydrocarbon resistivity index, the value of the N is the positive integer more than 20.
Preferably, stratum rock physical property index and the formation rock according to corresponding to each depth point
The base value of physical property index, calculate obtain stratum rock physical property index corresponding to each depth point respectively
The gaining rate of amplification and stratum rock physical property index, including：
Calculate the stratum rock physical property index corresponding to each depth point and the stratum rock physical property
Difference between the base value of index, the amplification using the difference as the stratum rock physical property index；
Calculate the stratum rock physical property index corresponding to each depth point and the stratum rock physical property
Ratio between the base value of index, the gaining rate using the ratio as the stratum rock physical property index.
Preferably, formation rock hydrocarbon resistivity index and the formation rock according to corresponding to each depth point
The base value of hydrocarbon resistivity index, calculate obtain formation rock hydrocarbon resistivity index corresponding to each depth point respectively
The gaining rate of amplification and formation rock hydrocarbon resistivity index, including：
Calculate the formation rock hydrocarbon resistivity index corresponding to each depth point and the formation rock is hydrocarbonaceous
Difference between the base value of index, the amplification using the difference as the formation rock hydrocarbon resistivity index；
Calculate the formation rock hydrocarbon resistivity index corresponding to each depth point and the formation rock is hydrocarbonaceous
Ratio between the base value of index, the gaining rate using the ratio as the formation rock hydrocarbon resistivity index.
Preferably, it is described to determine formation rock hydrocarbon resistivity index peak in the initiation layer, based on described
Layer rock hydrocarbon resistivity index peak, determines the destination layer, including：
Compare the formation rock hydrocarbon resistivity index corresponding to each depth point in the initiation layer, it is determined that described
The peak of formation rock hydrocarbon resistivity index；
It is first by being found from top to bottom in depth intervals where initiation layer Zhong Ding circle to hydrocarbon resistivity index peak
It is more than the m% of the formation rock hydrocarbon resistivity index peak in the formation rock hydrocarbon resistivity index corresponding to individual
Depth point as destination layer top circle depth；
Depth where hydrocarbon resistivity index peak in the initiation layer is interior by upper to initiation layer bottom battery limit (BL)
Find downwards in the first corresponding formation rock hydrocarbon resistivity index and be less than the formation rock hydrocarbon resistivity index most
The n% of high level depth point is less than n as destination layer bottom circle depth, wherein m and n for positive number and m；
Filtered out in the initiation layer between destination layer top circle's depth and destination layer bottom circle depth
All depth points corresponding to formation rock, the formation rock is defined as the destination layer.
According to the second aspect of the invention, there is provided the device that a kind of well logging destination layer divides automatically, should
Device includes：
Acquisition module, for analyzing the formation rock of different depth point in site mud logging, obtain each
Stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to individual depth point；
First computing module, for stratum rock physical property index and ground according to corresponding to each depth point
Layer rock hydrocarbon resistivity index, is calculated stratum rock physical property index corresponding to each depth point respectively
The base value of base value and formation rock hydrocarbon resistivity index；
Second computing module, for stratum rock physical property index and ground according to corresponding to each depth point
The base value of layer physical properties of rock index, calculate obtain stratum rock physical property corresponding to each depth point respectively
The amplification of index and the gaining rate of stratum rock physical property index；
3rd computing module, for formation rock hydrocarbon resistivity index and ground according to corresponding to each depth point
The base value of layer rock hydrocarbon resistivity index, it is hydrocarbonaceous that formation rock corresponding to acquisition each depth point is calculated respectively
The amplification of index and the gaining rate of formation rock hydrocarbon resistivity index；
First determining module, for by stratum rock physical property index, stratum corresponding to each depth point
The amplification of physical properties of rock index, the gaining rate of stratum rock physical property index, formation rock hydrocarbon resistivity index, stratum
The amplification of rock hydrocarbon resistivity index and the gaining rate of formation rock hydrocarbon resistivity index phase corresponding with each depth point respectively
Answer preset margin value to be compared, filter out and meet that all depth points of the corresponding preset margin value are corresponding
Formation rock, and be defined as initiation layer；
Wherein, the corresponding preset margin value includes presetting formation rock thing corresponding to each depth point
Sex index boundary value, the amplification boundary value of default stratum rock physical property index, default stratum rock physical property refer to
Several gaining rate boundary value, default formation rock hydrocarbon resistivity index boundary value, default formation rock hydrocarbon resistivity index
The gaining rate boundary value of amplification boundary value and default formation rock hydrocarbon resistivity index；
Second determining module, for determining formation rock hydrocarbon resistivity index peak in the initiation layer, it is based on
The formation rock hydrocarbon resistivity index peak, determines the destination layer.
Preferably, first computing module includes：
First computing unit, for calculating the stratum rock physical property index corresponding to N number of depth point
Average value, the base value using the average value as the stratum rock physical property index, the value of the N are
Positive integer more than 20；
Second computing unit, for calculating the formation rock hydrocarbon resistivity index corresponding to N number of depth point
Average value, the base value using the average value as the formation rock hydrocarbon resistivity index, the value of the N are
Positive integer more than 20.
Preferably, second computing module includes：
3rd computing unit, for calculating the stratum rock physical property index corresponding to each depth point
Difference between the base value of the stratum rock physical property index, using the difference as the formation rock
The amplification of physical property index；
4th computing unit, for calculating the stratum rock physical property index corresponding to each depth point
Ratio between the base value of the stratum rock physical property index, using the ratio as the formation rock
The gaining rate of physical property index.
Preferably, it is characterised in that the 3rd computing module includes：
5th computing unit, for calculating the formation rock hydrocarbon resistivity index corresponding to each depth point
Difference between the base value of the formation rock hydrocarbon resistivity index, using the difference as the formation rock
The amplification of hydrocarbon resistivity index；
6th computing unit, for calculating the formation rock hydrocarbon resistivity index corresponding to each depth point
Ratio between the base value of the formation rock hydrocarbon resistivity index, using the ratio as the formation rock
The gaining rate of hydrocarbon resistivity index.
Preferably, it is characterised in that second determining module includes：
First determining unit, for the formation rock corresponding to each depth point in the initiation layer
Hydrocarbon resistivity index, determine the peak of the formation rock hydrocarbon resistivity index；
Second determining unit, for by initiation layer Zhong Ding circle to depth area where hydrocarbon resistivity index peak
Interior find from top to bottom in the first corresponding formation rock hydrocarbon resistivity index contains more than the formation rock
The m% of hydrocarbon index peak depth point is as destination layer top circle depth；
3rd determining unit, for by depth where hydrocarbon resistivity index peak in the initiation layer to it is described just
Found from top to bottom in the battery limit (BL) of beginning layer bottom described in being less than in the first corresponding formation rock hydrocarbon resistivity index
The n% of formation rock hydrocarbon resistivity index peak depth point as destination layer bottom circle depth, wherein m and
N is positive number and m is less than n；
4th determining unit, for filtering out destination layer top circle's depth and described in the initiation layer
Formation rock corresponding to all depth points between destination layer bottom circle depth, the formation rock is defined as
The destination layer.
Compared to prior art, the present invention to the formation rock of different depth point in site mud logging by carrying out
Analysis, obtains the stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to each depth point, with
And various features value corresponding to corresponding stratum rock physical property index and formation rock hydrocarbon resistivity index, so that it is determined that
Initiation layer, according to formation rock hydrocarbon resistivity index peak in initiation layer, destination layer is further determined that, is entered
And overcome the influence of human factor and lacking for time lag in well logging destination layer division in the prior art
Fall into.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The required accompanying drawing used in example or description of the prior art is applied to be briefly described, it should be apparent that, below
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, other accompanying drawings can also be obtained according to the accompanying drawing of offer.
Fig. 1 is the method flow schematic diagram that the well logging destination layer that the embodiment of the present invention one provides divides automatically；
Fig. 2 is in the method that the well logging destination layer corresponding to the embodiment of the present invention two shown in Fig. 1 divides automatically
The schematic flow sheet of detailed processing in S12 steps；
Fig. 3 is in the method that the well logging destination layer corresponding to the embodiment of the present invention two shown in Fig. 1 divides automatically
The schematic flow sheet of detailed processing in S13 steps；
Fig. 4 is in the method that the well logging destination layer corresponding to the embodiment of the present invention two shown in Fig. 1 divides automatically
The schematic flow sheet of detailed processing in S14 steps；
Fig. 5 is in the method that the well logging destination layer corresponding to the embodiment of the present invention two shown in Fig. 1 divides automatically
The schematic flow sheet of detailed processing in S16 steps；
Fig. 6 is the apparatus structure schematic diagram that the well logging destination layer that the embodiment of the present invention three provides divides automatically.
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
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present invention, and
The embodiment being not all of.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of protection of the invention.
The specification and claims book of the present invention and the term " first " in above-mentioned accompanying drawing and " second "
Etc. being for distinguishing different objects, rather than for describing specific order.In addition term " comprising "
" having " and their any deformations, it is intended that cover non-exclusive include.Such as contain one
Series of steps or the process of unit, method, system, product or equipment are not set in the step of having listed
Or unit, but the step of may include not list or unit.
Embodiment one
The method flow divided automatically referring to the well logging destination layer that Fig. 1 is the offer of the embodiment of the present invention one is illustrated
Figure, this method comprise the following steps：
S11, the formation rock to different depth point in site mud logging are analyzed, and obtain each depth point institute
After corresponding stratum rock physical property index and formation rock hydrocarbon resistivity index, S12 is performed；
Wherein, the formation rock of different depth point in site mud logging is analyzed, mainly using oil gas
Layer Comprehensive interpretation, i.e., using real drilling well with brill engineering logging, geological logging, gas detection logging and materialization
The aggregate data such as well logging applied mathematics and the method for geological analysis are analyzed formation rock.
S12, stratum rock physical property index and the hydrocarbonaceous finger of formation rock according to corresponding to each depth point
Number, the base value and formation rock of stratum rock physical property index corresponding to each depth point are calculated respectively
After the base value of stone hydrocarbon resistivity index, S13 is performed；
S13, stratum rock physical property index and stratum rock physical property index according to corresponding to each depth point
Base value, calculate the amplification and ground for obtaining stratum rock physical property index corresponding to each depth point respectively
After the gaining rate of layer physical properties of rock index, S14 is performed；
S14, formation rock hydrocarbon resistivity index and formation rock hydrocarbon resistivity index according to corresponding to each depth point
Base value, calculate the amplification and ground for obtaining formation rock hydrocarbon resistivity index corresponding to each depth point respectively
After the gaining rate of layer rock hydrocarbon resistivity index, S15 is performed；
Wherein, step S13 can be first carried out after step S12 is performed and then performs step S14 again,
Step S14 can first be first carried out and then perform step S13, i.e. step S13 and step S14 again without first
Point of order afterwards.
S15, by stratum rock physical property index corresponding to each depth point, stratum rock physical property index
Amplification, the gaining rate of stratum rock physical property index, formation rock hydrocarbon resistivity index, formation rock hydrocarbon resistivity index
The gaining rate of amplification and formation rock hydrocarbon resistivity index respectively to each depth point corresponding to corresponding preset bounds
Value is compared, and filters out formation rock corresponding to all depth points for meeting the corresponding preset margin value,
And it is defined as initiation layer；
Wherein, the corresponding preset margin value includes presetting formation rock thing corresponding to each depth point
Sex index boundary value, the amplification boundary value of default stratum rock physical property index, default stratum rock physical property refer to
Several gaining rate boundary value, default formation rock hydrocarbon resistivity index boundary value, default formation rock hydrocarbon resistivity index
The gaining rate boundary value of amplification boundary value and default formation rock hydrocarbon resistivity index；
Specifically, can preset preset corresponding to each depth point stratum rock physical property index boundary value be 5,
The gaining rate boundary value of the amplification boundary value 3 of default stratum rock physical property index, default stratum rock physical property index
0.35th, formation rock hydrocarbon resistivity index boundary value 3, the amplification boundary value of default formation rock hydrocarbon resistivity index are preset
0.2 and the gaining rate boundary value 0.35 of default formation rock hydrocarbon resistivity index；Filter out the depth for meeting following requirements
The corresponding formation rock of point：Corresponding stratum rock physical property exponential quantity is more than 5, stratum rock physical property index
Increasing value be more than 3, the gaining rate value of stratum rock physical property index and be more than 0.35, formation rock hydrocarbon resistivity index value
More than 3, formation rock hydrocarbon resistivity index increasing value be more than 0.2 and formation rock hydrocarbon resistivity index gaining rate value it is big
In 0.35, the formation rock is defined as initiation layer.
S16, formation rock hydrocarbon resistivity index peak in the initiation layer is determined, contained based on the formation rock
Hydrocarbon index peak, determine the destination layer.
The embodiment of the present invention one is obtained by analyzing the formation rock of different depth point in site mud logging
The stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to each depth point are obtained, and correspondingly
Various features value corresponding to layer physical properties of rock index and formation rock hydrocarbon resistivity index, so that it is determined that initiation layer,
According to formation rock hydrocarbon resistivity index peak in initiation layer, destination layer is further determined that, and then overcome
The defects of influence of human factor during well logging destination layer divides in the prior art and time lag.
Embodiment two
With reference to the detailed process of S11 to the S16 steps described in the embodiment of the present invention one and Fig. 1, herein
Do not repeat.Specifically, as shown in Fig. 2 according to corresponding to each depth point stratum rock physical property
Index and formation rock hydrocarbon resistivity index, formation rock thing corresponding to each depth point is calculated respectively
The base value of sex index and the base value step S12 of formation rock hydrocarbon resistivity index are specifically included：
The average value of the stratum rock physical property index corresponding to S21, the N number of depth point of calculating, by described in
Base value of the average value as the stratum rock physical property index, the value of the N is the positive integer more than 20；
The average value of the formation rock hydrocarbon resistivity index corresponding to S22, the N number of depth point of calculating, by described in
Base value of the average value as the formation rock hydrocarbon resistivity index, the value of the N is the positive integer more than 20.
Preferably, as shown in figure 3, with reference to the embodiment of the present invention one, step S13 is according to institute in Fig. 1
The base value of stratum rock physical property index and stratum rock physical property index corresponding to each depth point is stated, is counted respectively
Calculate the amplification and stratum rock physical property index for obtaining stratum rock physical property index corresponding to each depth point
Gaining rate specifically include：
S31, calculate the stratum rock physical property index corresponding to each depth point and the formation rock
Difference between the base value of physical property index, the amplification using the difference as the stratum rock physical property index；
S32, calculate the stratum rock physical property index corresponding to each depth point and the formation rock
Ratio between the base value of physical property index, the gaining rate using the ratio as the stratum rock physical property index.
Accordingly, as shown in figure 4, with reference to the embodiment of the present invention one, step S14 is according to institute in Fig. 1
The base value of formation rock hydrocarbon resistivity index and formation rock hydrocarbon resistivity index corresponding to each depth point is stated, is counted respectively
Calculate the amplification and formation rock hydrocarbon resistivity index for obtaining formation rock hydrocarbon resistivity index corresponding to each depth point
Gaining rate specifically include：
S41, calculate the formation rock hydrocarbon resistivity index corresponding to each depth point and the formation rock
Difference between the base value of hydrocarbon resistivity index, the amplification using the difference as the formation rock hydrocarbon resistivity index；
S42, calculate the formation rock hydrocarbon resistivity index corresponding to each depth point and the formation rock
Ratio between the base value of hydrocarbon resistivity index, the gaining rate using the ratio as the formation rock hydrocarbon resistivity index.
Preferably, as shown in figure 5, with reference to the embodiment of the present invention one, step S16 determines institute in Fig. 1
Formation rock hydrocarbon resistivity index peak in initiation layer is stated, based on the formation rock hydrocarbon resistivity index peak,
Determine that the destination layer specifically includes：
The formation rock hydrocarbon resistivity index corresponding to each depth point in initiation layer described in S51, comparison, it is determined that
The peak of the formation rock hydrocarbon resistivity index；
S52, it will be sought from top to bottom in depth intervals where initiation layer Zhong Ding circle to hydrocarbon resistivity index peak
Look in the first corresponding formation rock hydrocarbon resistivity index and be more than the formation rock hydrocarbon resistivity index peak
M% depth point is as destination layer top circle depth；
S53, by the initiation layer in depth where hydrocarbon resistivity index peak to initiation layer bottom battery limit (BL)
Find from top to bottom in the first corresponding formation rock hydrocarbon resistivity index and be less than the hydrocarbonaceous finger of the formation rock
As destination layer bottom circle depth, wherein m and n are positive number and m for the n% of number peak depth point
Less than n；
S54, destination layer top circle's depth and destination layer bottom circle depth are filtered out in the initiation layer
Between all depth points corresponding to formation rock, the formation rock is defined as the destination layer.
Specifically for example, by taking a cause for gossip drilling well of central plain area as an example, each depth in the initiation layer
The formation rock hydrocarbon resistivity index corresponding to point, the peak for determining the formation rock hydrocarbon resistivity index is a,
It is first right by being found from top to bottom in depth intervals where initiation layer Zhong Ding circle to hydrocarbon resistivity index peak
It is more than the 80% of the formation rock hydrocarbon resistivity index peak a in the formation rock hydrocarbon resistivity index answered
Depth point is as destination layer top circle depth；By depth where hydrocarbon resistivity index peak in the initiation layer
Found from top to bottom in initiation layer bottom battery limit (BL) in the first corresponding formation rock hydrocarbon resistivity index
90% depth point less than the formation rock hydrocarbon resistivity index peak a is deep as destination layer bottom circle
Degree；Filtered out in the initiation layer between destination layer top circle's depth and destination layer bottom circle depth
All depth points corresponding to formation rock, the formation rock is defined as the destination layer.Above-mentioned
Example in can according to the geographical position where real drilling well or specific targets, set described m% and
N% value, but be to ensure that m and n is less than n for positive number and m, in the present invention not concrete restriction m with
N value.
Technical scheme disclosed according to embodiments of the present invention two, it is right that each depth point institute of acquisition has been described in detail
Various features value corresponding to the stratum rock physical property index and formation rock hydrocarbon resistivity index answered, and determine just
The step of beginning layer and destination layer, realize the performance index according to formation rock and then analyze determination destination layer
Purpose, and then overcome influence and the time of the human factor in the division of well logging destination layer in the prior art
The defects of hysteresis.
Embodiment three
It is relative with the method that the well logging destination layer disclosed in the embodiment of the present invention one and embodiment two divides automatically
Should, the embodiment of the present invention three additionally provides the device that a kind of well logging destination layer divides automatically, referring to Fig. 6 sheets
The apparatus structure schematic diagram that the well logging destination layer that inventive embodiments three provide divides automatically, the device specifically wrap
Include：
Acquisition module 601, for analyzing the formation rock of different depth point in site mud logging, obtain
Stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to each depth point；
First computing module 602, for according to corresponding to each depth point stratum rock physical property index and
Formation rock hydrocarbon resistivity index, stratum rock physical property index corresponding to each depth point is calculated respectively
Base value and formation rock hydrocarbon resistivity index base value；
Second computing module 603, for according to corresponding to each depth point stratum rock physical property index and
The base value of stratum rock physical property index, calculate obtain formation rock thing corresponding to each depth point respectively
The amplification of sex index and the gaining rate of stratum rock physical property index；
3rd computing module 604, for according to corresponding to each depth point formation rock hydrocarbon resistivity index and
The base value of formation rock hydrocarbon resistivity index, formation rock corresponding to obtaining each depth point is calculated respectively and is contained
The amplification of hydrocarbon index and the gaining rate of formation rock hydrocarbon resistivity index；
First determining module 605, for by stratum rock physical property index corresponding to each depth point,
Layer the amplification of physical properties of rock index, the gaining rate of stratum rock physical property index, formation rock hydrocarbon resistivity index,
Layer rock hydrocarbon resistivity index amplification and formation rock hydrocarbon resistivity index gaining rate respectively with each depth point pair
The corresponding preset margin value answered is compared, and filters out all depth for meeting the corresponding preset margin value
Formation rock corresponding to point, and it is defined as initiation layer；
Wherein, the corresponding preset margin value includes presetting formation rock thing corresponding to each depth point
Sex index boundary value, the amplification boundary value of default stratum rock physical property index, default stratum rock physical property refer to
Several gaining rate boundary value, default formation rock hydrocarbon resistivity index boundary value, default formation rock hydrocarbon resistivity index
The gaining rate boundary value of amplification boundary value and default formation rock hydrocarbon resistivity index；
Second determining module 606, for determining formation rock hydrocarbon resistivity index peak, base in the initiation layer
In the formation rock hydrocarbon resistivity index peak, the destination layer is determined.
Specifically, first computing module 602, including：
First computing unit 6021, refer to for calculating the stratum rock physical property corresponding to N number of depth point
Several average value, the base value using the average value as the stratum rock physical property index, the N's takes
It is worth for the positive integer more than 20；
Second computing unit 6022, for calculating the hydrocarbonaceous finger of the formation rock corresponding to N number of depth point
Several average value, the base value using the average value as the formation rock hydrocarbon resistivity index, the N's takes
It is worth for the positive integer more than 20.
Second computing module 603, including：
3rd computing unit 6031, for calculating the stratum rock physical property corresponding to each depth point
Difference between the base value of index and the stratum rock physical property index, using the difference as the stratum
The amplification of physical properties of rock index；
4th computing unit 6032, for calculating the stratum rock physical property corresponding to each depth point
Ratio between the base value of index and the stratum rock physical property index, using the ratio as the stratum
The gaining rate of physical properties of rock index.
3rd computing module 604, including：
5th computing unit 6041, it is hydrocarbonaceous for calculating the formation rock corresponding to each depth point
Difference between the base value of index and the formation rock hydrocarbon resistivity index, using the difference as the stratum
The amplification of rock hydrocarbon resistivity index；
6th computing unit 6042, it is hydrocarbonaceous for calculating the formation rock corresponding to each depth point
Ratio between the base value of index and the formation rock hydrocarbon resistivity index, using the ratio as the stratum
The gaining rate of rock hydrocarbon resistivity index.
Second determining module 606, including：
First determining unit 6061, for the stratum corresponding to each depth point in the initiation layer
Rock hydrocarbon resistivity index, determine the peak of the formation rock hydrocarbon resistivity index；
Second determining unit 6062, for will initiation layer Zhong Ding circle to deep where hydrocarbon resistivity index peak
Found from top to bottom in degree section in the first corresponding formation rock hydrocarbon resistivity index and be more than the formation rock
The m% of stone hydrocarbon resistivity index peak depth point is as destination layer top circle depth；
3rd determining unit 6063, for by depth where hydrocarbon resistivity index peak in the initiation layer to institute
State to find from top to bottom in the battery limit (BL) of initiation layer bottom in the first corresponding formation rock hydrocarbon resistivity index and be less than
The n% of formation rock hydrocarbon resistivity index peak depth point as destination layer bottom circle depth, wherein
M and n is positive number and m is less than n；
4th determining unit 6064, for filtered out in the initiation layer destination layer top circle's depth and
Formation rock corresponding to all depth points between destination layer bottom circle depth, the formation rock is true
It is set to the destination layer.
It is to pass through acquisition module in the device that well logging destination layer in the embodiment of the present invention three divides automatically
The stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to each depth point are obtained, is then passed through
The base value and ground of stratum rock physical property index corresponding to each depth point is calculated in first computing module
The base value of layer rock hydrocarbon resistivity index, then calculated obtain by the second computing module and the 3rd computing module respectively
The increasing of the amplification of stratum rock physical property index and stratum rock physical property index corresponding to each depth point
Rate, and the amplification of formation rock hydrocarbon resistivity index corresponding to each depth point and the hydrocarbonaceous finger of formation rock
Several gaining rates, then initiation layer is determined by the first determining module, determine mesh finally by the second determining module
Layer is marked, realizes and the purpose of destination layer is divided according to the characteristic of formation rock automatically, and then overcome existing
The defects of influence of human factor in technology in the division of well logging destination layer and time lag.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or use
The present invention.A variety of modifications to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the most wide scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a kind of method that well logging destination layer divides automatically, it is characterised in that this method includes：
The formation rock of different depth point in site mud logging is analyzed, obtained corresponding to each depth point
Stratum rock physical property index and formation rock hydrocarbon resistivity index；
According to stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to each depth point, divide
It is hydrocarbonaceous that the base value of stratum rock physical property index and formation rock corresponding to each depth point are not calculated
The base value of index；
According to the base of stratum rock physical property index and stratum rock physical property index corresponding to each depth point
Value, the amplification and formation rock for obtaining stratum rock physical property index corresponding to each depth point are calculated respectively
The gaining rate of stone physical property index；
According to the base of formation rock hydrocarbon resistivity index and formation rock hydrocarbon resistivity index corresponding to each depth point
Value, the amplification and formation rock for obtaining formation rock hydrocarbon resistivity index corresponding to each depth point are calculated respectively
The gaining rate of stone hydrocarbon resistivity index；
By stratum rock physical property index corresponding to each depth point, stratum rock physical property index amplification,
The gaining rate of stratum rock physical property index, formation rock hydrocarbon resistivity index, formation rock hydrocarbon resistivity index amplification and
The gaining rate of formation rock hydrocarbon resistivity index respectively to each depth point corresponding to corresponding preset margin value compared
Compared with filtering out formation rock corresponding to all depth points for meeting the corresponding preset margin value, and determine
For initiation layer；
Wherein, the corresponding preset margin value includes presetting formation rock thing corresponding to each depth point
Sex index boundary value, the amplification boundary value of default stratum rock physical property index, default stratum rock physical property refer to
Several gaining rate boundary value, default formation rock hydrocarbon resistivity index boundary value, default formation rock hydrocarbon resistivity index
The gaining rate boundary value of amplification boundary value and default formation rock hydrocarbon resistivity index；
Formation rock hydrocarbon resistivity index peak in the initiation layer is determined, based on the hydrocarbonaceous finger of the formation rock
Number peak, determines the destination layer.
2. according to the method for claim 1, it is characterised in that described according to each depth point
Corresponding stratum rock physical property index and formation rock hydrocarbon resistivity index, are calculated each depth respectively
The base value of stratum rock physical property index and the base value of formation rock hydrocarbon resistivity index corresponding to point, including：
The average value of the stratum rock physical property index corresponding to N number of depth point is calculated, will be described average
It is worth the base value as the stratum rock physical property index, the value of the N is the positive integer more than 20；
The average value of the formation rock hydrocarbon resistivity index corresponding to N number of depth point is calculated, will be described average
It is worth the base value as the formation rock hydrocarbon resistivity index, the value of the N is the positive integer more than 20.
3. according to the method for claim 1, it is characterised in that described according to each depth point
The base value of corresponding stratum rock physical property index and stratum rock physical property index, it is described each that acquisition is calculated respectively
The gaining rate of the amplification of stratum rock physical property index and stratum rock physical property index corresponding to individual depth point, including：
Calculate the stratum rock physical property index corresponding to each depth point and the stratum rock physical property
Difference between the base value of index, the amplification using the difference as the stratum rock physical property index；
Calculate the stratum rock physical property index corresponding to each depth point and the stratum rock physical property
Ratio between the base value of index, the gaining rate using the ratio as the stratum rock physical property index.
4. according to the method for claim 1, it is characterised in that described according to each depth point
The base value of corresponding formation rock hydrocarbon resistivity index and formation rock hydrocarbon resistivity index, it is described each that acquisition is calculated respectively
The gaining rate of the amplification of formation rock hydrocarbon resistivity index and formation rock hydrocarbon resistivity index corresponding to individual depth point, including：
Calculate the formation rock hydrocarbon resistivity index corresponding to each depth point and the formation rock is hydrocarbonaceous
Difference between the base value of index, the amplification using the difference as the formation rock hydrocarbon resistivity index；
Calculate the formation rock hydrocarbon resistivity index corresponding to each depth point and the formation rock is hydrocarbonaceous
Ratio between the base value of index, the gaining rate using the ratio as the formation rock hydrocarbon resistivity index.
5. according to the method for claim 1, it is characterised in that in the determination initiation layer
Layer rock hydrocarbon resistivity index peak, based on the formation rock hydrocarbon resistivity index peak, determines the target
Layer, including：
Compare the formation rock hydrocarbon resistivity index corresponding to each depth point in the initiation layer, it is determined that described
The peak of formation rock hydrocarbon resistivity index；
It is first by being found from top to bottom in depth intervals where initiation layer Zhong Ding circle to hydrocarbon resistivity index peak
It is more than the m% of the formation rock hydrocarbon resistivity index peak in the formation rock hydrocarbon resistivity index corresponding to individual
Depth point as destination layer top circle depth；
Depth where hydrocarbon resistivity index peak in the initiation layer is interior by upper to initiation layer bottom battery limit (BL)
Find downwards in the first corresponding formation rock hydrocarbon resistivity index and be less than the formation rock hydrocarbon resistivity index most
The n% of high level depth point is less than n as destination layer bottom circle depth, wherein m and n for positive number and m；
Filtered out in the initiation layer between destination layer top circle's depth and destination layer bottom circle depth
All depth points corresponding to formation rock, the formation rock is defined as the destination layer.
6. the device that a kind of well logging destination layer divides automatically, it is characterised in that the device includes：
Acquisition module, for analyzing the formation rock of different depth point in site mud logging, obtain each
Stratum rock physical property index and formation rock hydrocarbon resistivity index corresponding to individual depth point；
First computing module, for stratum rock physical property index and ground according to corresponding to each depth point
Layer rock hydrocarbon resistivity index, is calculated stratum rock physical property index corresponding to each depth point respectively
The base value of base value and formation rock hydrocarbon resistivity index；
Second computing module, for stratum rock physical property index and ground according to corresponding to each depth point
The base value of layer physical properties of rock index, calculate obtain stratum rock physical property corresponding to each depth point respectively
The amplification of index and the gaining rate of stratum rock physical property index；
3rd computing module, for formation rock hydrocarbon resistivity index and ground according to corresponding to each depth point
The base value of layer rock hydrocarbon resistivity index, it is hydrocarbonaceous that formation rock corresponding to acquisition each depth point is calculated respectively
The amplification of index and the gaining rate of formation rock hydrocarbon resistivity index；
First determining module, for by stratum rock physical property index, stratum corresponding to each depth point
The amplification of physical properties of rock index, the gaining rate of stratum rock physical property index, formation rock hydrocarbon resistivity index, stratum
The amplification of rock hydrocarbon resistivity index and the gaining rate of formation rock hydrocarbon resistivity index phase corresponding with each depth point respectively
Answer preset margin value to be compared, filter out and meet that all depth points of the corresponding preset margin value are corresponding
Formation rock, and be defined as initiation layer；
Wherein, the corresponding preset margin value includes presetting formation rock thing corresponding to each depth point
Sex index boundary value, the amplification boundary value of default stratum rock physical property index, default stratum rock physical property refer to
Several gaining rate boundary value, default formation rock hydrocarbon resistivity index boundary value, default formation rock hydrocarbon resistivity index
The gaining rate boundary value of amplification boundary value and default formation rock hydrocarbon resistivity index；
Second determining module, for determining formation rock hydrocarbon resistivity index peak in the initiation layer, it is based on
The formation rock hydrocarbon resistivity index peak, determines the destination layer.
7. device according to claim 6, it is characterised in that first computing module includes：
First computing unit, for calculating the stratum rock physical property index corresponding to N number of depth point
Average value, the base value using the average value as the stratum rock physical property index, the value of the N are
Positive integer more than 20；
Second computing unit, for calculating the formation rock hydrocarbon resistivity index corresponding to N number of depth point
Average value, the base value using the average value as the formation rock hydrocarbon resistivity index, the value of the N are
Positive integer more than 20.
8. device according to claim 6, it is characterised in that second computing module includes：
3rd computing unit, for calculating the stratum rock physical property index corresponding to each depth point
Difference between the base value of the stratum rock physical property index, using the difference as the formation rock
The amplification of physical property index；
4th computing unit, for calculating the stratum rock physical property index corresponding to each depth point
Ratio between the base value of the stratum rock physical property index, using the ratio as the formation rock
The gaining rate of physical property index.
9. device according to claim 6, it is characterised in that the 3rd computing module includes：
5th computing unit, for calculating the formation rock hydrocarbon resistivity index corresponding to each depth point
Difference between the base value of the formation rock hydrocarbon resistivity index, using the difference as the formation rock
The amplification of hydrocarbon resistivity index；
6th computing unit, for calculating the formation rock hydrocarbon resistivity index corresponding to each depth point
Ratio between the base value of the formation rock hydrocarbon resistivity index, using the ratio as the formation rock
The gaining rate of hydrocarbon resistivity index.
10. device according to claim 6, it is characterised in that second determining module includes：
First determining unit, for the formation rock corresponding to each depth point in the initiation layer
Hydrocarbon resistivity index, determine the peak of the formation rock hydrocarbon resistivity index；
Second determining unit, for by initiation layer Zhong Ding circle to depth area where hydrocarbon resistivity index peak
Interior find from top to bottom in the first corresponding formation rock hydrocarbon resistivity index contains more than the formation rock
The m% of hydrocarbon index peak depth point is as destination layer top circle depth；
3rd determining unit, for by depth where hydrocarbon resistivity index peak in the initiation layer to it is described just
Found from top to bottom in the battery limit (BL) of beginning layer bottom described in being less than in the first corresponding formation rock hydrocarbon resistivity index
The n% of formation rock hydrocarbon resistivity index peak depth point as destination layer bottom circle depth, wherein m and
N is positive number and m is less than n；
4th determining unit, for filtering out destination layer top circle's depth and described in the initiation layer
Formation rock corresponding to all depth points between destination layer bottom circle depth, the formation rock is defined as
The destination layer.
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