CN107505663A - A kind of method for building up of carbonate reservoir classification plate and application - Google Patents
A kind of method for building up of carbonate reservoir classification plate and application Download PDFInfo
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- CN107505663A CN107505663A CN201710695594.6A CN201710695594A CN107505663A CN 107505663 A CN107505663 A CN 107505663A CN 201710695594 A CN201710695594 A CN 201710695594A CN 107505663 A CN107505663 A CN 107505663A
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Abstract
The present invention relates to a kind of method for building up of carbonate reservoir classification plate and application, it is characterised in that comprises the following steps：1) equilateral triangle coordinate diagram is established, the base reference axis of triaxial chart represents rock type variable quantity, and the left side reference axis and the right reference axis of triaxial chart represent sedimentary facies variable quantity and diagenetic pattern variable quantity respectively；2) three reference axis are carried out with n deciles respectively, each decile accordingly represents a kind of rock type of shale content, a kind of sedimentary facies of water energy or a kind of diagenetic diagenetic pattern；3) triaxial chart is made respectively parallel to where diagenetic pattern variable quantity while and sedimentary facies variable quantity where while 1 parallel lines of n triaxial chart is divided into some subclass reservoirs, the subclass reservoir of subclass reservoir of the physical property of carbonate reservoir above triaxial chart downwards successively decreases successively, the method can be widely used in oil-gas field development geology field.
Description
Technical field
The present invention is the method for building up and application on a kind of carbonate reservoir classification plate, with belonging to oil-gas field development
Matter field.
Background technology
Marine Carbonate Rocks occupy highly important status in global Oil Gas exploration, are that oil important in the world is natural
Gas payzone, compared with clastic reservoir rock, Carbonate Reservoir Characteristics are increasingly complex, and sedimentary facies, rock type and diagenetic pattern
It is more notable etc. influence of the factor to reservoir properties.Carbonate reservoir has reservoir space type more (matrix pores, corrosion holes
Hole, crack, microcrack), the characteristics of secondary change is obvious, anisotropism and anisotropy are strong, these properties cause oil-gas exploration
Distribution understanding in exploitation to Favorable Reservoir is unclear.Research found, the quality of physical property, which is whether favourable reservoir one be important, to be commented
Price card is accurate, and carbonate reservoir is influenceed by Complicated Pore Structures, surveys between reservoir porosity and permeability without obvious
Correlation, therefore, further accurate explain for reservoir physical parameter is always the disaster that perplexs well log interpretation personnel
Topic.
In recent years, the sorting technique on Complicated Pore Structures carbonate reservoir is relatively fewer, and Relatively centralized, such as
Classified (such as corrosion hole type, slit formation, corrosion hole-slit formation, cave type, hole are responded according to the conventional logging of reservoir
Cave-slit formation), classified using the method for comprehensive marking according to Complicated Pore Structures carbonate reservoir influence factor, with
And simply use mathematical method and classified, however, these above-mentioned methods influence in practical operation without systematically consideration
The geologic(al) factor of Complicated Pore Structures carbonate reservoir, and the adaptability of many sorting techniques is limited.
The content of the invention
In view of the above-mentioned problems, it can systematically consider to influence Complicated Pore Structures carbonic acid it is an object of the invention to provide one kind
The method for building up of the carbonate reservoir classification plate of the geologic(al) factor of rock salt reservoir and application.
To achieve the above object, the present invention takes following technical scheme：A kind of foundation of carbonate reservoir classification plate
Method, it is characterised in that comprise the following steps：1) equilateral triangle coordinate diagram is established, wherein, the base reference axis of triaxial chart
Represent rock type variable quantity, the left side reference axis and the right reference axis of triaxial chart represent respectively sedimentary facies variable quantity and into
Rock Change of types amount, the shale content of setting rock type variable quantity from left to right successively decrease successively along reference axis, sedimentary facies change
The water energy of amount and the diagenesis of diagenetic pattern variable quantity are successively decreased successively from top to bottom along reference axis；2) according to carbonate rock
The geological condition of reservoir region determines the decile number n of three reference axis, and carries out n deciles respectively to three reference axis,
Wherein, each decile accordingly represents a kind of rock type of shale content, a kind of sedimentary facies of water energy or a kind of diagenesis and made
Diagenetic pattern；3) according to the decile number n of three reference axis in triaxial chart triaxial chart is made respectively parallel to
Where diagenetic pattern variable quantity while and sedimentary facies variable quantity where while n-1 bar parallel lines, triaxial chart is divided into some
Subclass reservoir, the subclass reservoir of subclass reservoir downwards of the physical property of carbonate reservoir above triaxial chart are passed successively
Subtract.
Further, triaxial chart is divided into some subclass reservoirs in the step 3), comprised the following steps：1. basis
The decile number n of three reference axis makees the n- parallel to side where diagenetic pattern variable quantity to triaxial chart in triaxial chart
1 parallel lines, triaxial chart is divided into n major class reservoirs by order from right to left, the physical property of carbonate reservoir is from the right side
Side major class reservoir major class reservoir to the left successively decreases successively；2. according to the decile number n of three reference axis in triaxial chart, to three
Angular coordinate figure makees the n-1 bar parallel lines parallel to side where sedimentary facies variable quantity, triaxial chart is further divided into some
Subclass reservoir, the subclass reservoir of subclass reservoir downwards of the physical property of carbonate reservoir above triaxial chart are passed successively
Subtract, and in triaxial chart center be in carbonate reservoir in the subclass reservoir of same level physical property it is identical.
A kind of application of carbonate reservoir classification plate, it is characterised in that including herein below：Stored up using carbonate rock
The method for building up of layer classification plate makes to obtain the triaxial chart that can reflect Complicated Pore Structures carbonate reservoir；Collection
Carbonate reservoir sample to be sorted, and obtain rock type, sedimentary facies and the diagenesis of carbonate reservoir sample to be sorted
Type；Carbonate reservoir sample to be sorted is put into corresponding subclass by corresponding rock type, sedimentary facies and diagenetic pattern
In reservoir, if carbonate reservoir sample is located in the subclass reservoir of triaxial chart the top, the carbonate reservoir
The physical property of sample is best, if carbonate reservoir sample is located in a certain subclass reservoir above triaxial chart, the carbon
The physical property of Carbonate Reservoir sample is preferable, by that analogy, if carbonate reservoir sample is located at triaxial chart bottom
In a certain subclass reservoir, then the physical property of the carbonate reservoir sample is worst.
For the present invention due to taking above technical scheme, it has advantages below：1st, the present invention is based on to complicated hole
The carbonate reservoir governing factor of structure is studied, and systematically considers rock type, sedimentary facies and diagenetic pattern to carbonic acid
The influence of rock salt reservoir, establish triaxial chart to carbonate reservoir carry out evaluation of classification, with sedimentary facies belt, rock type and
Diagenetic pattern is as three control end members, based on the carbonate reservoir physical property result under its combined influence, by carbonate
Rock reservoir carries out classifying and dividing, and plate is simple and clear, and quickly can not only show to clear and definite influences all kinds carbonate
The leading factor of rock reservoir change, it can also further instruct the Fine structural interpretation of carbonate reservoir physical parameter.2nd, originally
The triaxial chart that invention is established is divided by dividing major class reservoir and subclass reservoir to carbonate reservoir, " pyramid "
Top corresponding to carbonate reservoir physical property it is best, the physical property closer to the bottom of towe then carbonate reservoir of " pyramid " is got over
It is poorer to come, and physical property identical difference carbonate reservoir sample may have different rock types, sedimentary facies and diagenetic pattern, fill
Divide the complexity for embodying carbonate reservoir pore structure, convenient use personnel are used with reference to real current situation, have pole
Big practicality and adaptability, it can be widely applied in oil-gas field development geology field.
Brief description of the drawings
Fig. 1 is the classification plate schematic diagram that rock type and sedimentary facies are only considered in the present invention；
Fig. 2 is the classification plate schematic diagram that rock type, sedimentary facies and diagenetic pattern are considered in the present invention.
Embodiment
Come to carry out the present invention detailed description below in conjunction with accompanying drawing.It should be appreciated, however, that accompanying drawing has been provided only more
Understand the present invention well, they should not be interpreted as limitation of the present invention.
The method for building up of carbonate reservoir classification plate provided by the invention, comprises the following steps：
1st, equilateral triangle coordinate diagram is established, wherein, the base reference axis expression rock type variable quantity of triaxial chart, three
The left side reference axis and the right reference axis of angular coordinate figure represent sedimentary facies variable quantity and diagenetic pattern variable quantity respectively, set rock
The shale content of Change of types amount from left to right successively decreases successively along reference axis, the water energy and diagenetic pattern of sedimentary facies variable quantity
The Constructive diagenesis of variable quantity successively decreases successively from top to bottom along reference axis.
Influenceing the Dominated Factors of carbonate reservoir mainly includes rock type, sedimentary facies, diagenetic pattern and tectonism,
The crack or microcrack that wherein tectonism is formed are classified as constructive diagenetic pattern.Therefore, good carbonate reservoir is rock
The product that stone type, sedimentary facies and diagenetic pattern are overlapped mutually.Influenceed in view of carbonate reservoir by diagenetic pattern, it is different
The phenomenon of " overlapping " between type carbonate reservoir physical property be present, thus physical data is not included to the foundation of classification plate
In.
2nd, the decile number n of three reference axis is determined according to the geological condition of carbonate reservoir region, and to three
Individual reference axis carries out n deciles respectively, wherein, each decile is a kind of rock type of shale content, a kind of water energy
Sedimentary facies or a kind of diagenetic diagenetic pattern.
Generally, the number of three reference axis deciles of triaxial chart is consistent, just can guarantee that one between three variable quantities
One corresponding relation, often decile number n is more, then corresponding carbonate reservoir classification is more, i.e. carbonate reservoir classification
Division it is finer.
3rd, triaxial chart is made to become parallel to diagenetic pattern according to the decile number n of three reference axis in triaxial chart
The n-1 bar parallel lines on side, n major class reservoir, Mei Yi great are divided into by triaxial chart by order from right to left where change amount
The shale content of carbonate reservoir rock type and the water energy of sedimentary facies are identical in class reservoir, the thing of carbonate reservoir
From right side major class reservoir, major class reservoir successively decreases property successively to the right.
Rock type and sedimentary facies are to influence the principal element of carbonate reservoir primary pore development, carbonate reservoir
The more low then carbonate reservoir physical property of the shale content of middle rock type is better, the water body energy of sedimentary facies in carbonate reservoir
The more strong then carbonate reservoir physical property of amount is better, although the carbonate rock deposited in various environment is likely to due to sedimentary facies
Influence with diagenetic pattern and turn into carbonate reservoir, but the carbonate rock formed in different sedimentary facies stores up as carbonate rock
The potentiality of layer also differ, and the pore character of carbonate reservoir is also different, therefore, is not considering diagenetic pattern to carbonate
The influence of rock reservoir, only consider that the influence of rock type and sedimentary facies to carbonate reservoir is entered to the physical property of carbonate reservoir
Row Preliminary division.
4th, according to the decile number n of three reference axis in triaxial chart, triaxial chart is made parallel to sediment phase change
The n-1 bar parallel lines on side where change amount, triaxial chart is further divided into some subclass reservoirs, carbon in each subclass reservoir
The shale content of Carbonate Reservoir rock type, the water energy of sedimentary facies are identical with the diagenesis of diagenetic pattern, carbonate
The subclass reservoir of subclass reservoir of the physical property of rock reservoir above triaxial chart downwards successively decreases successively, and in triaxial chart
The physical property that center is in carbonate reservoir in the subclass reservoir of same level is identical.
Diagenetic pattern mainly divides constructive diagenetic pattern and destructive diagenetic pattern, the Constructive diagenesis of diagenetic pattern
The physical property of carbonate reservoir is better in more strong then corresponding subclass reservoir, and the destructive diagenesis of diagenetic pattern is more strong then right
The physical property of carbonate reservoir is poorer in the subclass reservoir answered.Although do not considering influence of the diagenetic pattern to carbonate reservoir
When, carbonate reservoir is by the carbonate reservoir thing in major class reservoir on the right side of the control of sedimentary facies between adjacent major class reservoir
Property is preferable, and the shale content of carbonate reservoir rock type is less than left side major class reservoir in subclass reservoir in the major class reservoir of right side
The shale content of carbonate reservoir rock type in interior subclass reservoir, carbonate rock stores up in subclass reservoir in the major class reservoir of right side
The water energy of layer sedimentary facies is higher than the water energy of carbonate reservoir sedimentary facies in subclass reservoir in the major class reservoir of left side, but
It is that influence of the diagenetic pattern to carbonate reservoir is stronger, it is right when considering influence of the diagenetic pattern to carbonate reservoir
The Constructive diagenesis of carbonate reservoir diagenetic pattern is weaker than in the major class reservoir of left side in subclass reservoir in the major class reservoir of side
The Constructive diagenesis of carbonate reservoir diagenetic pattern in the subclass reservoir of same level is centrally located at, because shale contains
Amount and the difference of water energy can cancel out each other with diagenetic difference, ultimately cause the right side for being centrally located at same level
In the major class reservoir of side in subclass reservoir in carbonate reservoir and left side major class reservoir in subclass reservoir carbonate reservoir thing
Property identical result, accordingly, it is considered to which this influence factor of diagenetic pattern, is completely classified to carbonate reservoir sample, no
The result that same subclass reservoir is rock type, sedimentary facies and diagenetic pattern synthesis respond.
It in summary it can be seen, the synthesis of rock type, sedimentary facies and diagenetic pattern three, be embodied in triaxial chart upper table
It is shown as：The physical property of carbonate reservoir is best corresponding to the top of " pyramid ", closer to the bottom of towe then carbonate of " pyramid "
Worse and worse, physical property identical difference carbonate reservoir sample may have different rock types, deposition to the physical property of rock reservoir
Phase and diagenetic pattern, have fully demonstrated the complexity of carbonate reservoir pore structure.
The method for building up institute using carbonate reservoir of the present invention classification plate is described in detail below by specific embodiment
The application of the carbonate reservoir classification plate of making, by taking the carbonate reservoir sample of H oil fields as an example：
1) triaxial chart is established, wherein, the base of triaxial chart is rock type variable quantity, a left side for triaxial chart
Side is sedimentary facies variable quantity, and the right of triaxial chart is diagenetic pattern variable quantity.
2) as shown in figure 1, being the quartering by three reference axis in triaxial chart, and to triaxial chart make parallel to
3 parallel lines of the right diagenetic pattern variable quantity, then the base of triaxial chart from right to left be respectively the first rock type~
4th rock type, and the shale content of rock type successively decreases successively from left to right；The left side of triaxial chart is divided from the top down
Not Wei the sedimentary facies of the first sedimentary facies~the 4th, and the water energy of sedimentary facies successively decreases successively from the top down.
3) as shown in Fig. 2 making 3 parallel lines parallel to left side sedimentary facies variable quantity, trigonometric coordinates to triaxial chart
The right of figure is respectively the diagenetic pattern of the first diagenetic pattern~the 4th from the top down, and from the top down diagenetic pattern by it is constructive into
It is destructive diagenesis that rock, which acts on gradual transition,.In triaxial chart 1 will be divided into by order from the top down, from right to left
The subclass reservoir of subclass reservoir~10, and the carbonate reservoir sample in corresponding major class reservoir is put into corresponding by diagenetic pattern
Subclass reservoir, i.e.,：
Rock type is the first rock type, sedimentary facies is the first sedimentary facies and diagenetic pattern be the first diagenetic pattern carbon
Carbonate Reservoir sample is 1 subclass reservoir, and the physical property of carbonate reservoir sample is best in the subclass reservoir；
Rock type is the first rock type, sedimentary facies is the first sedimentary facies and diagenetic pattern be the second diagenetic pattern carbon
Carbonate Reservoir sample is 2 subclass reservoirs, and rock type is the second rock type, sedimentary facies is the second sedimentary facies and diagenetic pattern
Carbonate reservoir sample for the first diagenetic pattern is 3 subclass reservoirs, carbonate rock storage in 2 subclass reservoirs and 3 subclass reservoirs
The physical property of layer sample is preferable；
Rock type is the first rock type, sedimentary facies is the first sedimentary facies and diagenetic pattern be the 3rd diagenetic pattern carbon
Carbonate Reservoir sample is 4 subclass reservoirs, and rock type is the second rock type, sedimentary facies is the second sedimentary facies and diagenetic pattern
Carbonate reservoir sample for the second diagenetic pattern is 5 subclass reservoirs, and rock type is the 3rd rock type, sedimentary facies
Three sedimentary facies and diagenetic pattern are that the carbonate reservoir sample of the first diagenetic pattern is 6 subclass reservoirs, 4 subclass reservoirs, 5 subclass
The physical property of carbonate reservoir sample is poor in reservoir and 6 subclass reservoirs；
Rock type is the first rock type, sedimentary facies is the first sedimentary facies and diagenetic pattern be the 4th diagenetic pattern carbon
Carbonate Reservoir sample is 7 subclass reservoirs, and rock type is the second rock type, sedimentary facies is the second sedimentary facies and diagenetic pattern
Carbonate reservoir sample for the 3rd diagenetic pattern is 8 subclass reservoirs, and rock type is the 3rd rock type, sedimentary facies
Three sedimentary facies and diagenetic pattern are that the carbonate reservoir sample of the second diagenetic pattern is 9 subclass reservoirs, and rock type is the 4th
Rock type, sedimentary facies are the 4th sedimentary facies and diagenetic pattern is that the carbonate reservoir sample of the first diagenetic pattern is 10 subclass
Reservoir, the physical property of carbonate reservoir sample is worst in 7 subclass reservoirs, 8 subclass reservoirs, 9 subclass reservoirs and 10 subclass reservoirs.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each part, connected mode and manufacture craft etc. are all
It can be varied from, every equivalents carried out on the basis of technical solution of the present invention and improvement, should not exclude
Outside protection scope of the present invention.
Claims (3)
1. a kind of method for building up of carbonate reservoir classification plate, it is characterised in that comprise the following steps：
1) equilateral triangle coordinate diagram is established, wherein, the base reference axis of triaxial chart represents rock type variable quantity, and triangle is sat
The left side reference axis and the right reference axis marked on a map represent sedimentary facies variable quantity and diagenetic pattern variable quantity respectively, set rock type
The shale content of variable quantity from left to right successively decreases successively along reference axis, water energy and the diagenetic pattern change of sedimentary facies variable quantity
The diagenesis of amount is successively decreased successively from top to bottom along reference axis；
2) the decile number n of three reference axis is determined according to the geological condition of carbonate reservoir region, and three are sat
Parameter carries out n deciles respectively, wherein, each decile accordingly represents a kind of rock type of shale content, a kind of water energy
Sedimentary facies or a kind of diagenetic diagenetic pattern；
3) triaxial chart is made respectively parallel to diagenetic pattern to become according to the decile number n of three reference axis in triaxial chart
Where change amount while and sedimentary facies variable quantity where while n-1 bar parallel lines, triaxial chart is divided into some subclass reservoirs, carbon
The subclass reservoir of subclass reservoir of the physical property of Carbonate Reservoir above triaxial chart downwards successively decreases successively.
A kind of 2. method for building up of carbonate reservoir classification plate as claimed in claim 1, it is characterised in that the step
3) triaxial chart is divided into some subclass reservoirs in, comprised the following steps：
1. triaxial chart is made parallel to diagenetic pattern variable quantity according to the decile number n of three reference axis in triaxial chart
The n-1 bar parallel lines on place side, triaxial chart is divided into n major class reservoirs, carbonate reservoir by order from right to left
Physical property successively decrease successively from right side major class reservoir major class reservoir to the left；
2. according to the decile number n of three reference axis in triaxial chart, triaxial chart is made parallel to sedimentary facies variable quantity
The n-1 bar parallel lines on place side, triaxial chart is further divided into some subclass reservoirs, the physical property of carbonate reservoir from
The subclass reservoir of subclass reservoir downwards above triaxial chart successively decreases successively, and center is in same water in triaxial chart
The physical property of carbonate reservoir is identical in the subclass reservoir of plane.
3. a kind of application of carbonate reservoir classification plate, it is characterised in that including herein below：
Making to obtain using the method for building up of carbonate reservoir as claimed in claim 1 or 2 classification plate can reflect again
The triaxial chart of miscellaneous pore structure carbonate reservoir；
Carbonate reservoir sample to be sorted is gathered, and obtains the rock type of carbonate reservoir sample to be sorted, deposition
Phase and diagenetic pattern；
Carbonate reservoir sample to be sorted is put into corresponding subclass by corresponding rock type, sedimentary facies and diagenetic pattern and stored up
In layer, if carbonate reservoir sample is located in the subclass reservoir of triaxial chart the top, the carbonate reservoir sample
The physical property of product is best, if carbonate reservoir sample is located in a certain subclass reservoir above triaxial chart, the carbonic acid
The physical property of rock salt reservoir samples is preferable, by that analogy, if carbonate reservoir sample is located at certain of triaxial chart bottom
In one subclass reservoir, then the physical property of the carbonate reservoir sample is worst.
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| CN110413951A (en) * | 2018-04-28 | 2019-11-05 | 中国石油天然气股份有限公司 | A kind of determination method of coal bed gas well mining speed |
| CN111079313A (en) * | 2019-12-31 | 2020-04-28 | 成都理工大学 | Carbonate reservoir information classification processing method and information data processing terminal |
| CN111665272A (en) * | 2019-03-08 | 2020-09-15 | 中国石油天然气集团有限公司 | Reservoir physical property evaluation method and device based on triangular evaluation chart |
| CN112258603A (en) * | 2020-10-30 | 2021-01-22 | 西南石油大学 | Three-axis layout drawing method for analyzing rule of three-factor composite influence and application thereof |
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| CN107505663B (en) | 2019-04-23 |
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