CN105201491B - Method and device for determining flooding strength - Google Patents
Method and device for determining flooding strength Download PDFInfo
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- CN105201491B CN105201491B CN201510557880.7A CN201510557880A CN105201491B CN 105201491 B CN105201491 B CN 105201491B CN 201510557880 A CN201510557880 A CN 201510557880A CN 105201491 B CN105201491 B CN 105201491B
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Abstract
The embodiment of the invention provides a method and a device for determining flooding strength, wherein the method comprises the following steps: dividing an interpretation interval of a target single well into basic interpretation units; and determining the flooding intensity of the basic interpretation unit according to the flooding layer interpretation template. By utilizing the technical scheme introduced in the embodiment of the invention, the target single well can be divided into the basic interpretation units according to the geological lithology which is directly related to the flooding strength, and the flooding strength analysis is carried out on the finely divided target single well by using the flooding layer interpretation template, so that a more accurate qualitative analysis result of the flooding layer can be obtained.
Description
Technical field
The invention belongs to interpretation of logging data field, in particular to a kind of method and dress for explaining reservoir water logging intensity
It sets.
Background technique
Currently, the domestic land each main force oil field in east has entered or has been going into High water cut, ultra-high water cut stage.Land east
The petroleum recoverable reserves in each main force oil field is in addition to part is from the exploitation to new discovery oil field, and considerable part is to having found
Oil field preserve layer-management and improve after exploitation.And the basis for carrying out preserving layer-management to the oil field having found is reservoir
The determination of water logging intensity.In addition, understanding reservoir water flooding intensity is to formulate the adjustment reasonable perforation of well in water flood field mid-later development phase
Scheme and the key for guaranteeing development effectiveness.Therefore, explain reservoir water logging intensity for improve oil field development level to close weight
It wants.
In the prior art, the common method for explaining submerged degree of oil reservoir is to be demarcated based on sealing core data by rock core
Naked eye well log interpretation standard is established, submerged degree of oil reservoir is evaluated according to the naked eye well log interpretation criteria Qualitative.
During realizing the application, at least there are the following problems in the prior art for inventor's discovery: logging well and solves in naked eye
During releasing establishment of standard, common method is to establish double formation water resistivity models using the sealing core data.It is described
Double formation water resistivity models explain reservoir parameter according to the amplitude information of well-log information.For long-term injecting water exploitation
Oil field, formation water salinity changes greatly between the bottom of top between layers, in layer, many amplitudes in the well-log information occurs
Its water out behavior widely different situation in the case that information is identical.In addition, establishing naked eye well log interpretation standard needs
A large amount of basic data and establishment process is complex, takes a long time.
The method for determining water logging intensity according to naked eye well log interpretation standard in the prior art, obtained evaluation result are not quasi- enough
Really, evaluation procedure is also complex, therefore, needs that a kind of evaluation result is more accurate, evaluation procedure more simply determines water
Flood the method for intensity.
Summary of the invention
The defects of inaccuracy and complicated process of water logging layer method are determined for the prior art, it is an object of the invention to
A kind of method and device of determining water logging intensity is provided, the accuracy of target individual well water logging intensity evaluation result can be improved, with
And reduce the complexity of evaluation procedure.
The embodiment of the present invention proposes a kind of method and device of determining water logging intensity, the method for the determining water logging intensity and
Device is specifically achieved in that
A kind of method of determining water logging intensity, which is characterized in that the described method includes:
The explanation interval of target individual well is divided into basic Interpretation unit；
Geologic analysis template is established in conjunction with the offset well data of the target individual well；
According to the Geologic analysis template, the water logging intensity of the basic Interpretation unit is determined.
It is optionally, in an embodiment of the present invention, described that the explanation interval of target individual well is divided into basic Interpretation unit,
Include:
Thickness is more than or equal to the sandstone layer between the adjacent shale layer of the first preset value as basic Interpretation unit.
Optionally, in an embodiment of the present invention, first preset value is not less than 1 meter.
Optionally, in an embodiment of the present invention, it after establishing Geologic analysis template in conjunction with offset well data, also wraps
It includes:
The Geologic analysis template is corrected according to sealed coring well data；
Correspondingly, the water logging intensity for determining the basic Interpretation unit according to the Geologic analysis template, comprising:
The water logging intensity of the basic Interpretation unit is determined according to the revised Geologic analysis template.
Optionally, in an embodiment of the present invention, described that the Geologic analysis mould is corrected according to sealed coring well data
Plate, comprising:
Sealing core drilling is carried out to the water flood field of target individual well location, and obtains the sealed coring well money of rock core
Material, the sealed coring well data include at least Gas logging data and chemical examination data；
According to the Gas logging data of the rock core and chemical examination data, determine the rock core under different water logging strength types
Gas logging curve form；
The correspondence on the stratum of interval and the target individual well where determining the rock core according to the sealed coring well data
Relationship carries out gas logging curve form of the rock core under different water logging strength types and the Geologic analysis template pair
Than being corrected to the Geologic analysis template.
Optionally, in an embodiment of the present invention, the offset well data includes at least following one kind: rock core assay money
Material, well-log information, with bore log data.
Optionally, in an embodiment of the present invention, the Geologic analysis template includes point according to the offset well data
Analyse the corresponding relationship of the water logging strength type that result determines and gas survey parameter.
Optionally, in an embodiment of the present invention, the water logging strength type includes: oil reservoir, low Water Flooding Layer, middle water logging
Layer, strong Water Flooding Layer.
Optionally, in an embodiment of the present invention, it includes: total gas curve form, total gas curve and brill that the gas, which surveys parameter,
When curved line relation, C1Relative amount.
Optionally, in an embodiment of the present invention, the Geologic analysis is corrected according to sealed coring well data described
After template, further includes:
According to the analysis to target individual well location geology characteristic as a result, adjusting the weight system that the gas surveys parameter
Number.
A kind of device of determining water logging intensity, which is characterized in that described device includes:
Division unit, for the explanation interval of target individual well to be divided into basic Interpretation unit；
Template establishes unit, establishes Geologic analysis template for the offset well data in conjunction with the target individual well；
Determination unit, for it is single to calculate the basic explanation that the division unit divides according to the Geologic analysis template
The water logging intensity of member.
Optionally, in an embodiment of the present invention, the division unit further include:
Setting unit, the thickness for shale layer to be arranged are more than or equal to the first preset value；
Subelement is divided, the sandstone layer for being more than or equal to thickness between the adjacent shale layer of first preset value is made
For the basic Interpretation unit.
Optionally, in an embodiment of the present invention, first preset value of the setting unit setting is not less than 1
Rice.
Optionally, in an embodiment of the present invention, described device further include:
Amending unit, for correcting the Geologic analysis template according to sealed coring well data；
Correspondingly, the elementary solution that determination unit division unit according to the Geologic analysis formwork calculation divides
The water logging intensity for releasing unit includes:
According to the revised Geologic analysis template, the water logging intensity of the basic Interpretation unit is determined.
Optionally, in an embodiment of the present invention, the amending unit, further includes:
Sealing core drilling unit carries out sealing core drilling for the water flood field to target individual well location, and obtains
The sealed coring well data of rock core, the sealed coring well data include at least Gas logging data and chemical examination data；
It determines that gas surveys form unit, for the Gas logging data and chemical examination data according to the rock core, determines the rock core
Gas logging curve form under different water logging strength types；
Comparison correction unit, for interval and the target where determining the rock core according to the sealed coring well data
The corresponding relationship on the stratum of individual well, by gas logging curve form of the rock core under different water logging strength types and the Water Flooding Layer
It explains that template compares, the Geologic analysis template is corrected.
Optionally, in an embodiment of the present invention, the offset well data includes at least following one kind: rock core assay money
Material, well-log information, with bore log data.
Optionally, in an embodiment of the present invention, the Geologic analysis template includes point according to the offset well data
Analyse the corresponding relationship of the water logging strength type that result determines and gas survey parameter.
Optionally, in an embodiment of the present invention, the water logging strength type includes: oil reservoir, low Water Flooding Layer, middle water logging
Layer, strong Water Flooding Layer.
Optionally, in an embodiment of the present invention, it includes: total gas curve form, total gas curve and brill that the gas, which surveys parameter,
When curved line relation, C1Relative amount.
Optionally, in an embodiment of the present invention, described device further include:
Adjustment unit, for basis to the analysis of target individual well location geology characteristic as a result, adjusting the gas
Survey the weight coefficient of parameter.
The above-mentioned technical proposal of introduction of the embodiment of the present invention have the following beneficial effects: by by target individual well according to geology
Lithology classification is at basic Interpretation unit, and the geologic lithology is again and water logging intensity has direct connection, uses Geologic analysis template
Water logging intensive analysis, available more accurate Water Flooding Layer the qualitative analysis are carried out to the target individual well after fine divide.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of method flow diagram of embodiment of determining water logging intensity method provided by the invention；
Fig. 2 is a kind of embodiment of the present invention that the Geologic analysis template is corrected according to sealed coring well data
Method flow diagram；
Fig. 3 is a kind of modular structure schematic diagram of embodiment of determining water logging intensity device provided by the invention；
Fig. 4 is a kind of modular structure schematic diagram of embodiment of amending unit provided by the invention；
Fig. 5 is the modular structure schematic diagram of another embodiment of determining water logging intensity device provided by the invention；
Fig. 6 is a kind of modular structure schematic diagram of embodiment of amending unit provided by the invention；
Fig. 7 is the modular structure schematic diagram of another embodiment of determining water logging intensity device provided by the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As described above, the prior art had ignored when determining target individual well water logging intensity stratum middle layer and layer, in layer top bottom it
Between water logging intensity difference, for this purpose, stratum is carried out basic Interpretation unit according to shale layer, sandstone layer by present invention method
Division, pass through the fine division on stratum, it is therefore intended that improve water logging intensity evaluation result accuracy.Therefore, the present invention mentions
A kind of method and device of determining water logging intensity method out.
Fig. 1 is a kind of method flow diagram of embodiment of determining water logging intensity method provided by the invention, as shown, should
Method specifically includes the following steps:
Step S1: the explanation interval of target individual well is divided into basic Interpretation unit.
In waterflooding oil field, for same interpretation layer, also there is very the water logging intensity of different depth in interpretation layer
Big difference, therefore its water out behavior can be determined according to the specific structure of each interpretation layer.Under normal circumstances, each interpretation layer is vertical
It is sandstone layer, shale layer intertonguing upwards, due to shale layer compact structure, is generally not easy into water, therefore most of water
Layer is flooded to be located in sandstone layer.For this purpose, the embodiment of the present invention proposes the explanation interval of target individual well being divided into basic Interpretation unit,
The basic Interpretation unit may include the sandstone layer in interpretation layer.
The specific division methods of the basic Interpretation unit can be on gas logging curve longitudinal (being exactly depth direction), can
Using the sandstone layer that is more than or equal to thickness between the adjacent shale layer of the first preset value as the basic Interpretation unit.The present invention
In embodiment, the shale layer can be interpreted as to the insulating course of the basic Interpretation unit.First preset value can be set
It is set to not less than 1 meter.When the shale layer thickness is less than the first preset value, the shale layer can be mixed in adjacent thereto
In sandstone layer, do not need to divide.
The target individual well is divided into several basic Interpretation units, by rear by the step S1 in through this embodiment
Continuous method and step determines that the water logging intensity of each basic Interpretation unit, the water logging intensity for solving different depth in interpretation layer have difference
Different problem improves the Explanation Accuracy of the target individual well water logging intensity.
Step S2: Geologic analysis template is established in conjunction with the offset well data of the target individual well.
Oil field is during waterflooding development, as the extension of water injection cycle, recovery percent of reserves are continuously increased, oil field Crude Oil
The water flooding degree of oil reservoir improves, hydrocarbons are reduced.Gas detection logging is that well logging measures hydrocarbon gas in stratum in the process at the scene
Content and component, gas logging curve can react the content of the hydrocarbon gas and the relationship of depth of stratum.Pass through analysis institute
The water logging intensity of oil reservoir can be differentiated by stating gas logging curve.
In the embodiment of the present invention, determine that the water logging intensity of the basic Interpretation unit can be according to Geologic analysis template.
Specifically, the Geologic analysis template can be established according to offset well data, the offset well data can be included at least with next
Kind: rock core assay data, well-log information, with bore log data.
The Geologic analysis template may include the water logging intensity class determined according to the analysis result of the offset well data
Type and gas survey the relationship of parameter.The water logging strength type includes: oil reservoir, low Water Flooding Layer, middle Water Flooding Layer, strong Water Flooding Layer.It is described
It includes: total gas curve form, total gas curve and drilling time curve relationship, C that gas, which surveys parameter,1Relative amount.
The basic water logging intensity of table 1 explains template table
Table 1 is that the basic water logging intensity that the embodiment of the present invention proposes explains template table, explains that selection is above-mentioned below with reference to table 1
The reason of three gas survey parameter.
For total gas curve form, in same reservoir, due to being influenced by reservoir heterogeneity, no
Water flooding degree with depth can have larger difference.In the case where non-water logging, oil reservoir contains Chuck Steak, and total hydrocarbon content is in acquisition gas
Ratio in body is greater than 50%, and total gas curve morphologic appearance is full box.With the increase of water injection rate, waterflood efficiency is mentioned
The oil saturation that height will lead to oil reservoir reduces and hydrocarbons reduce (especially C1-C4The reduction of content), total hydrocarbon content is
It reduces.The reduction of total hydrocarbon content can show as the decline of total gas curve relative amplitude on gas detection logging curve, and with
The enhancing of water injection time, water flooding degree are accordingly got higher, and the amplitude decline of total gas curve also becomes larger.Meanwhile total gas curve shape
State will be also varied.The oil reservoir lower part physical property of positive rhythm deposition is relatively preferable, and during water drive, lower part crude oil is driven first
Out, the decline of total gas curve lower part is more, and total gas curve shows the form of " top sunken bottom is flat "；The oil reservoir of anti-cyclothemic deposition then phase
Instead, in the form of " top is flat convex "., because of reservoir change, shale content is different for other, and the variations such as cementation method difference cause
Physical property variation, then total gas curve can be made in irregular " finger-like " or " dentation ".In low Water Flooding Layer, total hydrocarbon content is in acquisition gas
Ratio in body can be 35%-50%, and the morphologic appearance of total gas curve is finger-like.In middle Water Flooding Layer, total hydrocarbon content is being acquired
Ratio in gas can be 15%-35%, and the morphologic appearance of total gas curve is finger-like or dentation.In strong Water Flooding Layer, total hydrocarbon
Ratio of the content in acquisition gas can be less than 15%, and the morphologic appearance of total gas curve is finger-like or dentation.
For total gas curve and drilling time curve relationship, total gas curve and drilling time curve can have a baseline, base
Line value is set based on experience value, and the value that baseline is deviateed in total gas curve (can use percentage table as total hydrocarbon needle position misalignment amount
Show), the value that baseline is deviateed in drilling time curve can be as boring base line offset (being expressed as a percentage).The physical property of non-water logging compared with
Good oil reservoir, rate of penetration is fast, and drilling time curve low value is obvious, and total gas curve is in high level, and the two anisotropy is obvious.At this point, when boring
Value is lower than baseline value, and 50% can be greater than by boring base line offset, and total hydrocarbon content value is higher than baseline value, total hydrocarbon needle position misalignment amount
50% can be greater than.And the anisotropy " when height bores, low total hydrocarbon " is presented in the oil reservoir that physical property is poor, drilling time curve and total gas curve.
In low Water Flooding Layer, with the increase of water filling degree, the relationship of drilling time curve and total gas curve is from anisotropy to sex reversal in the same direction.
" middle anisotropy to low same tropism " is presented in the relationship of drilling time curve and total gas curve, i.e. brill duration is lower than baseline value, bores base line
Offset can be 20%-50%, and total hydrocarbon content value is higher than baseline value, and total hydrocarbon needle position misalignment amount can be less than 20% or can be with
For 20%-50%；It bores duration and is lower than baseline value, boring base line offset can be less than 20%, and total hydrocarbon content value is higher than baseline value,
Total hydrocarbon needle position misalignment amount can be 20%-50%；Alternatively, brill duration and total hydrocarbon content value are below baseline value, base line is bored
Offset and total hydrocarbon needle position misalignment amount can be lower than 20%.In middle Water Flooding Layer, the relationship of drilling time curve and total gas curve is in
Existing " low same tropism same tropism in ", i.e. brill duration and total hydrocarbon content value are below baseline value, and boring base line offset can be with
Lower than 20%, total hydrocarbon needle position misalignment amount can be 20%-50%；Or brill duration and total hydrocarbon content value are below baseline value,
Boring base line offset can be 20%-50%, and total hydrocarbon needle position misalignment amount can be lower than 20%.In strong Water Flooding Layer, drilling time curve
The same tropism of " when low brill, low total hydrocarbon " is presented with total gas curve, i.e., brill duration and total hydrocarbon content value are below baseline value, when brill
Needle position misalignment amount and total hydrocarbon needle position misalignment amount can be all larger than 50%.Therefore it can be judged with the relationship of total gas curve and drilling time curve
The water logging intensity of oil reservoir.
For C1For relative amount, in the component that can be detected due to mud logging unit device, C1Solubility in water is most
It is small, C2-C4Solubility in water can be C12 times or more.This is resulted in during waterflooding extraction, with water filling degree
Increase, C1Relative amount in total hydrocarbon gas increases, i.e. C1/(C2+C3+C4) value becomes larger.In oil reservoir, the relative amount of C1
It can be less than 14；In low Water Flooding Layer, the relative amount of C1 can be 14-16；Can be in the relative amount of middle Water Flooding Layer, C1
16-18；18 can be greater than in the relative amount of strong Water Flooding Layer, C1.
Step S3: according to the Geologic analysis template, the water logging intensity of the basic Interpretation unit is determined.
According to the Geologic analysis template, the water logging intensity of the basic Interpretation unit is explained, so that it is determined that
The water logging intensity of entire target individual well.
Subsequently, the dynamic data and static data of the means of production be can be combined with, such as: absorb water production profile over the years,
Tracer data, cumulative water injected, reservoir connection situation and the aqueous situation of producing well, in conjunction with numerical simulation result comprehensive descision
Whether Reservoir Static is met to the explanation results of the water logging intensity of the target individual well, dynamic recognizes.According to above-mentioned judgement, Ke Yijin
One step demonstrate,proves the feasibility of the determination water logging intensity method of the present embodiment proposition, and accurately explains for subsequent Water Flooding Layer and provide reference
And foundation.
Water logging intensity in step S2 explains that template is established under ideal conditions, but in practical situations, total hydrocarbon is bent
Line morphology and total gas curve often change with drilling time curve relationship, in order to enable the water logging intensity explains template more
Meet the actual conditions of region, so to be modified to the Geologic analysis template.Therefore, upon step s 2 also
Comprising steps of correcting the Geologic analysis template according to sealed coring well data.
Fig. 2 is a kind of embodiment of the present invention that the Geologic analysis template is corrected according to sealed coring well data
Method flow diagram, specifically includes the following steps:
Step S21: sealing core drilling is carried out to the water flood field of target individual well location, and obtains the closed of rock core
Core hole data, the sealed coring well data include at least Gas logging data and chemical examination data.
In target individual well location, the water flood field for being in development late stage is chosen, sealing core drilling is carried out to it.
The rock core obtained using usual method is easy the pollution by drilling fluid, and result of core analysis is caused to have large error.Using close
The rock core of coring acquisition is closed substantially not by the pollution of drilling fluid, and can really reflect the geology porosity of ground layer original, contain
The parameter values such as oily saturation degree and moisture content.Sealing core drilling specifically being total to by dedicated hermetic core taking tool and sealing fluid
Same-action is realized.In embodiments of the present invention, the rock core taken can grow 100 meters.
After obtaining rock core by sealing core drilling, the sealed coring well data of rock core is obtained, the sealed coring well data is extremely
It less include Gas logging data and chemical examination data.The sealed coring well data can also include saturation degree test data and the displacement of reservoir oil
Efficiency test data.
Step S22: according to the Gas logging data of the rock core and chemical examination data, determine the rock core in different water logging intensity
Gas logging curve form under type.
The basic water logging intensity shown in table 1 explains in template that the form of total gas curve has box, finger-like, dentation, still
In the realistic case, total gas curve form runs far deeper than these three.In this step, according to the Gas logging data of the rock core and
Chemical examination data can determine gas logging curve form of the rock core under different water logging strength types.For example, in water logging layer state
Under, total gas curve is also possible to have a generally triangular shape.
Step S23: the ground of interval and the target individual well where determining the rock core according to the sealed coring well data
The corresponding relationship of layer, by gas logging curve form of the rock core under different water logging strength types and the Geologic analysis template
It compares, the Geologic analysis template is corrected.
The correspondence on the stratum of interval and the target individual well where determining the rock core according to the sealed coring well data
Relationship carries out gas logging curve form of the rock core under different water logging strength types and the Geologic analysis template pair
Than being corrected to the Geologic analysis template.For example, enriching total gas curve form under each water logging strength type, making
It is more accurate to obtain the explanation template.
It is subsequent, it, can be with when differing larger with the Geologic analysis template according to the gas logging curve form of Water Flooding Layer
According to the geology characteristic of target individual well location, the weight coefficient that the gas surveys parameter is adjusted.For example, by comparison, discovery
In this area, the result degree of correlation of C1 relative amount and rock core in the Geologic analysis template is very big, but total hydrocarbon is bent
Line morphology is not met very much, and the weight coefficient of C1 relative amount at this moment can be improved, and reduces the weight coefficient of total gas curve form.It can
To recycle the above method to carry out secondary correction to the Geologic analysis template, until the gas logging curve form of the Water Flooding Layer
With the matching rate of the Geologic analysis template it is higher until.
The device of determining water logging intensity corresponding with above-described embodiment method is described below, Fig. 3 is provided by the invention
A kind of modular structure schematic diagram of embodiment of water logging intensity device is determined, as shown in figure 3, the determining water logging intensity device 30
It include: division unit 31, template establishes unit 32 and determination unit 33, wherein
Division unit 31, for the explanation interval of target individual well to be divided into basic Interpretation unit；
Template establishes unit 32, and the combination offset well data for the target individual well establishes Geologic analysis template；
Determination unit 33 establishes Geologic analysis template for establishing unit 32 according to the template, calculates the division
The water logging intensity for the basic Interpretation unit that unit 31 divides.
The modular structure schematic diagram of a kind of embodiment of amending unit provided by the invention, as shown in figure 4, the division is single
Member 31 further includes setting unit 41 and division subelement 42, wherein
Setting unit 41, the thickness for shale layer to be arranged are more than or equal to the first preset value；
Subelement 42 is divided, the sandstone layer for being more than or equal to thickness between the adjacent shale layer of first preset value
As basic Interpretation unit.
Fig. 5 is the modular structure schematic diagram of another embodiment of determining water logging intensity device provided by the invention, such as Fig. 5
It is shown, the device 50 of the determining water logging intensity further include:
Amending unit 51, the amending unit 51 are used to correct the Geologic analysis mould according to sealed coring well data
Plate；
Correspondingly, the division of the determination unit 33 division unit according to the Geologic analysis formwork calculation is basic
The water logging intensity of Interpretation unit includes:
According to the revised Geologic analysis template, the water logging intensity of the basic Interpretation unit is determined.
Fig. 6 is a kind of modular structure schematic diagram of embodiment of amending unit provided by the invention, as shown in fig. 6, described
Amending unit 51 includes: sealing core drilling unit 61, determines that gas surveys form unit 62 and comparison correction unit 63, wherein
Sealing core drilling unit 61 carries out sealing core drilling for the water flood field to target individual well location, and obtains
The sealed coring well data of coring, the sealed coring well data include at least Gas logging data and chemical examination data；
It determines that gas surveys form unit 62, for the Gas logging data and chemical examination data according to the rock core, determines the rock
Gas logging curve form of the heart under different water logging strength types；
Comparison correction unit 63, for interval and the mesh where determining the rock core according to the sealed coring well data
The corresponding relationship for marking the stratum of individual well, by gas logging curve form of the rock core under different water logging strength types and the water logging
Layer explains that template compares, and is corrected to the Geologic analysis template.
Fig. 7 is the modular structure schematic diagram of another embodiment of determining water logging intensity device provided by the invention, such as Fig. 7
It is shown, the device 70 of the determining water logging intensity further include:
Adjustment unit 71, for according to the analysis to target individual well location geology characteristic as a result, adjustment described in
The weight coefficient of gas survey parameter.
Other related descriptions of the above-mentioned device about the determining water logging intensity, please refer to corresponding determination water logging
The explanation of intensity method.
The above-mentioned technical proposal of introduction of the embodiment of the present invention have the following beneficial effects: by by target individual well according to geology
Lithology classification is at basic Interpretation unit, and the geologic lithology is again and water logging intensity has direct connection, uses Geologic analysis template
Water logging intensive analysis, available more accurate Water Flooding Layer the qualitative analysis are carried out to the target individual well after fine divide.This
Inventive embodiments method establishes the basis source of Geologic analysis template in existing offset well data, water logging intensity determination process phase
More simple to art methods, time-consuming reduces.In addition, present invention method can also be to the Geologic analysis mould
Plate is modified, so that the explanation template is more accurate.
Those skilled in the art will also be appreciated that the various illustrative components, blocks that the embodiment of the present invention is listed
(illustrative logical block), unit and step can by electronic hardware, computer software, or both knot
Conjunction is realized.For the replaceability (interchangeability) for clearly showing that hardware and software, above-mentioned various explanations
Property component (illustrative components), unit and step universally describe their function.Such function
It can be that the design requirement for depending on specific application and whole system is realized by hardware or software.Those skilled in the art
Can be can be used by various methods and realize the function, but this realization is understood not to for every kind of specific application
Range beyond protection of the embodiment of the present invention.
Various illustrative logical blocks or unit described in the embodiment of the present invention can by general processor,
Digital signal processor, specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic devices,
Discrete gate or transistor logic, discrete hardware components or above-mentioned any combination of design carry out implementation or operation described function.
General processor can be microprocessor, optionally, the general processor may be any traditional processor, controller,
Microcontroller or state machine.Processor can also realize by the combination of computing device, such as digital signal processor and micro-
Processor, multi-microprocessor, one or more microprocessors combine a digital signal processor core or any other like
Configuration realize.
The step of method described in the embodiment of the present invention or algorithm can be directly embedded into hardware, processor execute it is soft
The combination of part module or the two.Software module can store in RAM memory, flash memory, ROM memory, EPROM storage
Other any form of storaging mediums in device, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this field
In.Illustratively, storaging medium can be connect with processor, so that processor can read information from storaging medium, and
It can be to storaging medium stored and written information.Optionally, storaging medium can also be integrated into the processor.Processor and storaging medium can
To be set in asic, ASIC be can be set in user terminal.Optionally, processor and storaging medium also can be set in
In different components in the terminal of family.
In one or more exemplary designs, above-mentioned function described in the embodiment of the present invention can be in hardware, soft
Part, firmware or any combination of this three are realized.If realized in software, these functions be can store and computer-readable
On medium, or it is transferred on a computer readable medium in the form of one or more instructions or code forms.Computer readable medium includes electricity
Brain storaging medium and convenient for so that computer program is allowed to be transferred to from a place telecommunication media in other places.Storaging medium can be with
It is that any general or special computer can be with the useable medium of access.For example, such computer readable media may include but
It is not limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storages, disk storage or other magnetic storage devices or other
What can be used for carry or store with instruct or data structure and it is other can be by general or special computer or general or specially treated
The medium of the program code of device reading form.In addition, any connection can be properly termed computer readable medium, example
Such as, if software is to pass through a coaxial cable, fiber optic cables, double from a web-site, server or other remote resources
Twisted wire, Digital Subscriber Line (DSL) are defined with being also contained in for the wireless way for transmitting such as example infrared, wireless and microwave
In computer readable medium.The disk (disk) and disk (disc) includes compress disk, radium-shine disk, CD, DVD, floppy disk
And Blu-ray Disc, disk is usually with magnetic replicate data, and disk usually carries out optically replicated data with laser.Combinations of the above
Also it may be embodied in computer readable medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of method of determining water logging intensity, which is characterized in that the described method includes:
The explanation interval of target individual well is divided into basic Interpretation unit, wherein the basic Interpretation unit includes that thickness is greater than
Equal to the sandstone layer between the adjacent shale layer of the first preset value；
Geologic analysis template is established in conjunction with the offset well data of the target individual well, the Geologic analysis template includes according to institute
The corresponding relationship of analysis result the water logging strength type determined and gas survey parameter of offset well data is stated, the gas surveys parameter and includes:
Total gas curve form, total gas curve and drilling time curve relationship, C1Relative amount；
According to the Geologic analysis template, the water logging intensity of the basic Interpretation unit is determined；
Wherein, after the offset well data in conjunction with the target individual well establishes Geologic analysis template, further includes:
The Geologic analysis template is corrected according to sealed coring well data；
Correspondingly, determining the water logging intensity of the basic Interpretation unit according to the Geologic analysis template, comprising: according to amendment
Geologic analysis template afterwards determines the water logging intensity of the basic Interpretation unit；
It is and described according to the sealed coring well data amendment Geologic analysis template, comprising:
Sealing core drilling is carried out to the water flood field of target individual well location, and obtains the sealed coring well data of rock core,
The sealed coring well data includes at least Gas logging data and chemical examination data；
According to the Gas logging data of the rock core and chemical examination data, determine that gas of the rock core under different water logging strength types is surveyed
Tracing pattern；
The corresponding relationship on the stratum of interval and the target individual well where determining the rock core according to the sealed coring well data,
Gas logging curve form of the rock core under different water logging strength types is compared with the Geologic analysis template, to institute
Geologic analysis template is stated to be corrected.
2. the method for determining water logging intensity according to claim 1, which is characterized in that first preset value is not less than 1
Rice.
3. the method for determining water logging intensity according to claim 1, which is characterized in that the offset well data include at least with
Lower one kind: rock core assay data, well-log information, with bore log data.
4. the method for determining water logging intensity according to claim 1, which is characterized in that the water logging strength type includes:
Oil reservoir, low Water Flooding Layer, middle Water Flooding Layer, strong Water Flooding Layer.
5. the method for determining water logging intensity according to claim 1, which is characterized in that repaired according to sealed coring well data
After the just described Geologic analysis template, further includes:
According to the analysis to target individual well location geology characteristic as a result, adjusting the weight coefficient that the gas surveys parameter.
6. a kind of device of determining water logging intensity, which is characterized in that described device includes:
Division unit, for the explanation interval of target individual well to be divided into basic Interpretation unit, wherein the basic Interpretation unit
The sandstone layer being more than or equal between the adjacent shale layer of the first preset value including thickness；
Template establishes unit, establishes Geologic analysis template, the Water Flooding Layer for the offset well data in conjunction with the target individual well
Explain that template includes the corresponding relationship that the water logging strength type determined according to the analysis result of the offset well data and gas survey parameter,
It includes: total gas curve form, total gas curve and drilling time curve relationship, C that the gas, which surveys parameter,1Relative amount；
Determination unit, for calculating the basic Interpretation unit that the division unit divides according to the Geologic analysis template
Water logging intensity；
Wherein, the division unit further include:
Setting unit, the thickness for shale layer to be arranged are more than or equal to the first preset value；
Subelement is divided, the sandstone layer for being more than or equal to thickness between the adjacent shale layer of first preset value is as base
This Interpretation unit；
Described device further include:
Amending unit, for correcting the Geologic analysis template according to sealed coring well data；
Correspondingly, the water logging for the basic Interpretation unit that determination unit division unit according to Geologic analysis formwork calculation divides
Intensity includes:
According to revised Geologic analysis template, the water logging intensity of the basic Interpretation unit is determined；
Wherein, the amending unit, further includes:
Sealing core drilling unit carries out sealing core drilling for the water flood field to target individual well location, and obtains rock core
Sealed coring well data, the sealed coring well data include at least Gas logging data and chemical examination data；
It determines that gas surveys form unit, for the Gas logging data and chemical examination data according to the rock core, determines the rock core not
With the gas logging curve form under water logging strength type；
Comparison correction unit, for interval and the target individual well where determining the rock core according to the sealed coring well data
Stratum corresponding relationship, by gas logging curve form of the rock core under different water logging strength types and the Geologic analysis
Template compares, and is corrected to the Geologic analysis template.
7. the device of determining water logging intensity according to claim 6, which is characterized in that the setting unit is arranged described
First preset value is not less than 1 meter.
8. the device of determining water logging intensity according to claim 6, which is characterized in that the offset well data include at least with
Lower one kind: rock core assay data, well-log information, with bore log data.
9. the device of determining water logging intensity according to claim 6, which is characterized in that the water logging strength type includes:
Oil reservoir, low Water Flooding Layer, middle Water Flooding Layer, strong Water Flooding Layer.
10. the device of determining water logging intensity according to claim 6, which is characterized in that further include:
Adjustment unit, for being joined according to the analysis to target individual well location geology characteristic as a result, adjusting the gas survey
Several weight coefficients.
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| CN105626010B (en) * | 2016-03-16 | 2017-11-17 | 中国石油大学(华东) | A kind of water filling interval classifying rationally method in subsection water injection well |
| CN106503295B (en) * | 2016-09-22 | 2019-08-06 | 中国石油天然气股份有限公司 | Method and device for explaining oil field water flooded layer by using state space model |
| CN107762496A (en) * | 2017-09-11 | 2018-03-06 | 中国石油天然气股份有限公司 | Method and device for determining interpretation layer interval |
| CN110019119B (en) * | 2017-10-12 | 2021-09-21 | 中石化石油工程技术服务有限公司 | Reservoir oil-gas-containing logging interpretation method and device |
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