CN106707336A - Method for distinguishing hanging wall and footwall of fault in oilfield development zone - Google Patents
Method for distinguishing hanging wall and footwall of fault in oilfield development zone Download PDFInfo
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Abstract
The invention provides a method for distinguishing a hanging wall and a footwall of a fault in an oilfield development zone. The method comprises a step of obtaining drilling well hierarchical data, a step of creating a hanging wall data file and a footwall data file based on the drilling well hierarchical data in the condition that the fault is a reverse fault, wherein the hanging wall data file comprises hierarchical data of only drilling a formation for one time and hierarchical data with a smaller depth in the hierarchical data of drilling the formation for two times, and the footwall data file comprises hierarchical data of only drilling a formation for one time and hierarchical data with a larger depth in the hierarchical data of drilling the formation for two times, a step of projecting the hierarchical data in the hanging wall data file into a seismic data interpretation system, and identifying the fault position corresponding to the hanging wall of the fault, a step of projecting the hierarchical data in the footwall data file into the seismic data interpretation system, and identifying the fault position corresponding to the footwall of the fault, and a step of distinguishing the hanging wall and footwall of the fault of a no-well zone according to the seismic reflection characteristic of a breakpoint identified in a well area.
Description
Technical field
The present invention relates to seismic data interpretation field, more particularly, to a kind of area for oil field development area
The method of disjunction layer upper lower burrs.
Background technology
It is to implement the very important link of construction to distinguish tomography upper lower burrs, and seismic data interpretation person is used to distinguish disconnected
Essentially from then seismic data cube and drilling well individual-layer data, drilling well individual-layer data is to compare to the data of layer breakpoint
Simple ascii data, it is impossible to intuitively differentiate tomography breakpoint, prior art recognizes the upper disk of geological fault
With lower wall more by seismic data, it is necessary to be based on seismic resolution data higher, essence is carried out to breakpoint
True portrays.Present technology more relies on seismic properties, such as coherent technique, ant body technique, variance
The identification of the technologies such as body technique, inclination angle analytical technology and three-dimensional visualization auxiliary tomography, but complicated fault
Band often seismic imaging difference region, this just brings uncertainty to seismic attribute abstraction, also restriction resolve
The correctness of layer identification.The particularly upper lower burrs of reversed fault due to the polyisomenism for having stratum, add earthquake into
The effect of picture is poor, it tends to be difficult to distinguish.
The content of the invention
The first purpose of the disclosure, is to propose a kind of upper lower burrs of the differentiation tomography for oil field development area
Method, this method will have the drilling well individual-layer data of wellblock ASCII fromat to be applied to distinguish tomography upper lower burrs
Breakpoint, while combining seismic data without wellblock, study has the Seismic reflection character of wellblock earthquake breakpoint, well shake
With reference to, distinguish tomography, the method simple, intuitive, its compared to prior art while ensure that accuracy,
Implementation complexity is greatly reduced, is particularly suited for the bad region of Complicated Fault Zone seismic imaging, so as to
Enough is preferably oil field development service.
According to an aspect of the invention, it is proposed that a kind of side of differentiation tomography upper lower burrs for oil field development area
Method, the method includes：Drilling well individual-layer data is obtained, the drilling well individual-layer data is represented drilling well in wellblock
The individual-layer data for meeting a certain stratum is bored, the wherein stratum is cut by tomography；It is the feelings of reversed fault in the tomography
Under condition, the upper disk and lower wall of the tomography are distinguished according to following steps：Created based on the drilling well individual-layer data
Disk data file and lower wall data file, wherein upper disk data file meets stratum layering once comprising only brill
Data, and bore the shallower individual-layer data once of depth in the individual-layer data twice of the chance stratum；Lower wall data
File to include only bore meets stratum individual-layer data once, and in the individual-layer data twice of the brill chance stratum deeply
Degree relatively deep individual-layer data once；Individual-layer data in upper disk data file is projected in seismic data interpretation system
In system, and identify to represent the different depth of individual-layer data with different, individual-layer data is judged according to mark
The position undergone mutation of depth, as breakpoint location corresponding with the upper disk of the tomography；By lower wall data
Individual-layer data in file is projected in seismic data interpretation system, and represents hierarchy number with different marks
According to different depth, the position that the depth of individual-layer data is undergone mutation is judged according to mark, as with it is described
The corresponding breakpoint location of lower wall of tomography；And according to the seismic reflection in the breakpoint for thering is wellblock to identify
Feature, finds similar reflection in the geological data without wellblock, to determine the breakpoint without wellblock tomography, from
And distinguish the upper disk and lower wall of the tomography without wellblock.
The geological data that each side of the disclosure does not rely on complexity is extracted, by the position of drilling well drilling strata
Can exactly judge there is wellblock breakpoint location scope, and intuitively and accurately be identified using drilling well layering projection
Upper lower burrs, have the wellblock Seismic reflection character to carry out breakpoint differentiation, well shake knot without wellblock using seismic data study
Close, compared to prior art, the disclosure greatly reduces judgement complexity while judgment accuracy is ensured,
It is particularly suited for the bad region of Complicated Fault Zone seismic imaging such that it is able to preferably for oil field development takes
Business
Brief description of the drawings
Disclosure illustrative embodiments are described in more detail by with reference to accompanying drawing, the disclosure it is above-mentioned
And other purposes, feature and advantage will be apparent, wherein, in disclosure illustrative embodiments
In, identical reference number typically represents same parts.
Fig. 1 shows the flow chart of the method for differentiation tomography upper lower burrs according to an embodiment of the invention.
Fig. 2 shows the schematic diagram of the embodiment of the present invention principle for reversed fault.
Fig. 3 shows the y floor of certain the oil field development area X tomography distinguished using the method for the embodiment of the present invention
Lower wall breakpoint plan an example.
Specific embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although being shown in accompanying drawing
The preferred embodiment of the disclosure, however, it is to be appreciated that may be realized in various forms the disclosure without should be by
Embodiments set forth herein is limited.Conversely, thesing embodiments are provided so that the disclosure is more saturating
It is thorough and complete, and the scope of the present disclosure can intactly be conveyed to those skilled in the art.
Fig. 1 shows a kind of differentiation tomography for oil field development area according to an embodiment of the invention
The method of lower wall, the method includes：
Step 101, obtains drilling well individual-layer data, and drilling well individual-layer data is represented is having drilling well brill chance in wellblock a certain
The individual-layer data on stratum, the wherein stratum are cut by tomography；
Step 102, the tomography be reversed fault in the case of, according to following steps distinguish the tomography upper disk and
Lower wall：
Step 1021, upper disk data file and lower wall data file are created based on drilling well individual-layer data, its
In upper disk data file meet stratum individual-layer data once comprising only boring, and bore and meet the stratum twice
Individual-layer data in the shallower individual-layer data once of depth；Lower wall data file meets the stratum comprising only brill
Individual-layer data once, and bore depth relatively deep layering once in the individual-layer data twice of the chance stratum
Data；
Step 1022, the individual-layer data in upper disk data file is projected in seismic data interpretation system,
And identify to represent the different depth of individual-layer data with different, individual-layer data is judged according to mark
The position that depth is undergone mutation, as breakpoint location corresponding with the upper disk of tomography；
Step 1023, the individual-layer data in lower wall data file is projected in seismic data interpretation system,
And identify to represent the different depth of individual-layer data with different, individual-layer data is judged according to mark
The position that depth is undergone mutation, as breakpoint location corresponding with the lower wall of tomography；And
Step 1024, according to the Seismic reflection character in the breakpoint for thering is wellblock to identify, without wellblock
Similar reflection is found in geological data, to determine the breakpoint without wellblock tomography, so as to distinguish without wellblock
Tomography upper disk and lower wall.
The geological data that each side of the disclosure does not rely on complexity is extracted, by the position of drilling well drilling strata
Can exactly judge there is wellblock breakpoint location scope, and intuitively and accurately be identified using drilling well layering projection
Upper lower burrs, have the wellblock Seismic reflection character to carry out breakpoint differentiation, well shake knot without wellblock using seismic data study
Close, compared to prior art, the disclosure greatly reduces judgement complexity while judgment accuracy is ensured,
It is particularly suited for the bad region of Complicated Fault Zone seismic imaging such that it is able to preferably for oil field development takes
Business
Fig. 2 shows the schematic diagram of the embodiment of the present invention principle for reversed fault.Wherein, K1 represents stratum,
D represents the lower wall of tomography, and U represents the upper disk of tomography.Here using tri- mouthfuls of drilling wells of a, b, c as in there is a wellblock
The representative of drilling well describes the principle of the program, and b, c drilling well represents only drilling strata K1 drilling wells once, its
Middle b drilling wells are layered as b1, and c drilling wells are layered as c1；A drilling wells represent drilling strata K1 drilling wells twice, its
That depth is shallower in middle a drilling wells layering is a1, depth it is deeper be a2.
It will be understood by those skilled in the art that three drilling wells are drawn only for the purposes of principle of specification, actually in mesh
In mark region, be not limited to shown in figure with the quantity of the drilling well of a, b, c same type one, conversely, according to
The need for Practical Project, each type of drilling hole number can be reached more than hundreds if not thousands of.
According to the design feature of reversed fault as shown in Figure 2, near breakpoint A corresponding with upper disk, layering
A1, b1 are due to both corresponding to upper disk, and its depth is necessarily close, and c1 corresponds to lower wall, its depth and a1,
The difference of b1 is larger, and breakpoint A is necessarily located between c1 and a1.Based on the principle that, can by c1,
A1, b1 individual-layer data are put into disk data file, by way of to Systems Projection is explained, can find depth
Spend position or the position range of mutation, you can be considered position or the position range of breakpoint A.
Similarly, near breakpoint B corresponding with lower wall, c1 is layered, the data of a2 are necessarily close, and and b1
Depth difference it is larger, and breakpoint B is necessarily located between a2 and b1.Based on the principle that, can by c1,
A2, b1 data are put into lower wall data file, by way of to Systems Projection is explained, can be found depth and be dashed forward
The position of change or position range, you can be considered position or the position range of breakpoint B.
Position or position range based on breakpoint A and breakpoint B, you can distinguish the upper disk and lower wall of tomography.
In one example, the method also includes：In the case where the tomography is normal fault, can be according to layering
The depth difference of data determines the upper disk (upthrow) and lower wall (downthrow block) of tomography.The situation of normal fault
Fairly simple for reversed fault, the depth of the individual-layer data of upthrow and downthrow block has more significant
Difference, therefore according only to the depth difference of individual-layer data, you can determine the upthrow and downthrow block of tomography.
Tomography be normal fault or reversed fault, can be by those skilled in the art according to its experience, using any
Mode judges.In one example, can judge as follows the tomography be reversed fault or
Normal fault：According to drilling well individual-layer data, drilling strata individual-layer data twice is judged whether, if deposited
, then it is assumed that the tomography is reversed fault, otherwise it is assumed that the tomography is normal fault.The principle of this mode is
Design feature based on normal fault and reversed fault, if as shown in Fig. 2 tomography is reversed fault, can exist
Drilling strata drilling well twice as drilling well a, and normal fault is not in then such drilling well.It is this to sentence
In the case that disconnected mode is typically found at drilling well enough depths, and typically to be judged in combination with geological analysis.
In one example, drilling strata layering twice can be judged whether by such mode
Data：If the individual-layer data of a certain drilling well differs by more than two component layer datas of threshold value comprising depth, recognize
For the individual-layer data of the drilling well is drilling strata individual-layer data twice.Wherein can be in two component layer datas deeply
Deeper one group of degree is stored in lower wall data file, and shallower one group of depth is stored in disk data file.
As can be seen from Figure 2 in the principle of this judgment mode, i.e. two individual-layer datas of the drilling well a on stratum of brill chance,
The two component layer datas that depth differs larger, the i.e. data of a1 layerings and the data of a2 layerings can be included.
Seismic data interpretation system in the present embodiment, can be that those skilled in the art according to actual needs can
Any seismic data interpretation system of enough selections.According to the difference and this area skill of seismic data interpretation system
The need for art personnel, the depth of individual-layer data can be represented using any mark, for example, mark can
To be one or more in color, symbol or gray scale, by this intuitive way, can be conveniently and accurate
The accurate location of true area breakpoint.
In one example, can be obtained according to the breakpoint location for having wellblock has the fault earthquake breakpoint of wellblock special
Levy；This process can be realized by the way that breakpoint is projected on the seismic profile of well area.Based on above-mentioned
There is the fault earthquake breakpoint feature of well area, there can be the disconnected of wellblock in the geological data learning without well area
Layer earthquake breakpoint feature recognizes the breakpoint without wellblock, thus distinguish the tomography without well area upper disk and under
Disk, realizes that well shake combines the purpose of accurate identification tomography upper lower burrs.Wherein, fault earthquake breakpoint feature can be with
It is wave group feature, reflex etc..
Effect using example is illustrated
For ease of understanding the scheme and its effect of the embodiment of the present invention, a concrete application example given below
Effect is illustrated.It will be understood by those skilled in the art that the example is of the invention only for the purposes of understanding, its any tool
Body details is not intended to limit the present invention by any way.
Fig. 3 shows the K1 of certain the oil field development area X tomography distinguished using the method for the embodiment of the present invention
One example of the lower wall breakpoint plan of layer.
X tomographies in the area are reversed fault, and near Faults seismic imaging is excessively poor, and drilling well is a lot, but for upper
The accurate location of lower wall is difficult to, can be calibrated according to gray difference from figure using the method for the present embodiment
Upper lower burrs really are distinguished, it is more much more accurate than portraying for original tomography.
Each point on figure is that the individual-layer data of K1 layers of drilling well brill chance is projected in the plane, wherein with gray scale chart
Show the different depth of individual-layer data, compared with original tomography, the rough feature of section presentation, but compared with
Breakpoint originally is more true, accurate.
The disclosure can be system, method and/or computer program product.Computer program product can include
Computer-readable recording medium, containing for making processor realize the computer of various aspects of the disclosure
Readable program instructions.
Computer-readable recording medium can be the instruction for keeping and storing to be used by instruction execution equipment
Tangible device.Computer-readable recording medium for example can be-- but be not limited to-- storage device electric,
Magnetic storage apparatus, light storage device, electromagnetism storage device, semiconductor memory apparatus or above-mentioned any conjunction
Suitable combination.The more specifically example (non exhaustive list) of computer-readable recording medium includes：It is portable
Formula computer disks, hard disk, random access memory (RAM), read-only storage (ROM), erasable type can
Program read-only memory (EPROM or flash memory), static RAM (SRAM), portable pressure
Contracting disk read-only storage (CD-ROM), digital versatile disc (DVD), memory stick, floppy disk, machinery are compiled
Decoding apparatus, the punch card for being for example stored thereon with instruction or groove internal projection structure and above-mentioned any conjunction
Suitable combination.Computer-readable recording medium used herein above is not construed as instantaneous signal in itself, such as
The electromagnetic wave of radio wave or other Free propagations, the electromagnetic wave propagated by waveguide or other transmission mediums
(for example, the light pulse for passing through fiber optic cables) or the electric signal for passing through wire transfer.
Computer-readable program instructions as described herein can download to each from computer-readable recording medium
Calculating/processing equipment, or downloaded by network, such as internet, LAN, wide area network and/or wireless network
To outer computer or External memory equipment.Network can include copper transmission cable, Optical Fiber Transmission, wireless biography
Defeated, router, fire wall, interchanger, gateway computer and/or Edge Server.Each calculates/processes and sets
Adapter or network interface in standby receive computer-readable program instructions from network, and forward the meter
Calculation machine readable program instructions, for storing in the computer-readable recording medium in each calculating/processing equipment.
Computer program instructions for performing disclosure operation can be assembly instruction, instruction set architecture
(ISA) instruction, machine instruction, machine-dependent instructions, microcode, firmware instructions, condition setup data,
Or the source code or object code write with any combination of one or more programming language, the programming language
Say the programming language-Smalltalk, C++ etc. including object-oriented, and routine process type programming language
Speech-such as " C " language or similar programming language.Computer-readable program instructions can be counted fully in user
Performed on calculation machine, partly perform on the user computer, performed as an independent software kit, part
Part performs or completely on remote computer or server on the remote computer on the user computer
Perform.In the situation for being related to remote computer, remote computer can be by the network-bag of any kind
LAN (LAN) or wide area network (WAN)-be connected to subscriber computer are included, or, it may be connected to outside meter
Calculation machine (such as using ISP come by Internet connection).In certain embodiments, pass through
Using the status information of computer-readable program instructions come personalized customization electronic circuit, such as FPGA
Circuit, field programmable gate array (FPGA) or programmable logic array (PLA), the electronic circuit can
To perform computer-readable program instructions, so as to realize various aspects of the disclosure.
Referring herein to the stream of the method according to the embodiment of the present disclosure, device (system) and computer program product
Journey figure and/or block diagram describe various aspects of the disclosure.It should be appreciated that each side of flow chart and/or block diagram
The combination of each square frame in frame and flow chart and/or block diagram, can be realized by computer-readable program instructions.
These computer-readable program instructions can be supplied to all-purpose computer, special-purpose computer or other can compile
The processor of journey data processing equipment, so as to produce a kind of machine so that these instructions are by computer
Or other programmable data processing units computing device when, generate in realizing flow chart and/or block diagram
The device of function/action specified in one or more square frames.Can also be these computer-readable program instructions
Storage in a computer-readable storage medium, these instruct cause computer, programmable data processing unit and/
Or other equipment works in a specific way, so that, the computer-readable medium of the instruction that is stored with then includes one
Manufacture, it includes realizing function/action specified in one or more square frames in flow chart and/or block diagram
The instruction of various aspects.
Can also computer-readable program instructions be loaded into computer, other programmable data processing units,
Or on miscellaneous equipment so that perform one on computer, other programmable data processing units or miscellaneous equipment
Series of operative steps, to produce computer implemented process, so that in computer, other programmable numbers
One or more sides in realizing flow chart and/or block diagram according to the instruction performed in processing unit or miscellaneous equipment
Function/action specified in frame.
Flow chart and block diagram in accompanying drawing show system, method and the meter of the multiple embodiments according to the disclosure
The architectural framework in the cards of calculation machine program product, function and operation.At this point, flow chart or block diagram
In each square frame can represent a part for module, program segment or instruction, the module, program segment
Or a part for instruction is used for the executable instruction of the logic function that realization specifies comprising one or more.Having
In a little realizations as replacement, the function of being marked in square frame can also be with suitable different from what is marked in accompanying drawing
Sequence occurs.For example, two continuous square frames can essentially be performed substantially in parallel, they sometimes can also
Perform in the opposite order, this is depending on involved function.It is also noted that block diagram and/or flow chart
In each square frame and the square frame in block diagram and/or flow chart combination, can with perform regulation function
Or the special hardware based system of action is realized, or specialized hardware and computer instruction can be used
Combine to realize.
It is described above the presently disclosed embodiments, described above is exemplary, and non-exclusive,
And it is also not necessarily limited to disclosed each embodiment.In the scope and spirit without departing from illustrated each embodiment
In the case of, many modifications and changes will be apparent from for those skilled in the art.
The selection of term used herein, it is intended to best explain the principle of each embodiment, practical application or to market
In technology technological improvement, or to be understood that other those of ordinary skill of the art disclose herein
Each embodiment.
Claims (8)
1. a kind of method of differentiation tomography upper lower burrs for oil field development area, the method includes：
Drilling well individual-layer data is obtained, the drilling well individual-layer data is represented is having drilling well in wellblock to bore a certain stratum of chance
Individual-layer data, the wherein stratum is cut by tomography；
In the case where the tomography is reversed fault, the upper disk and lower wall of the tomography are distinguished according to following steps：
Upper disk data file and lower wall data file are created based on the drilling well individual-layer data, wherein upper disk
Data file meets stratum individual-layer data once comprising only brill, and bores the layering twice of the chance stratum
The shallower individual-layer data once of depth in data；Lower wall data file meets the stratum once comprising only boring
Individual-layer data, and bore depth relatively deep individual-layer data once in the individual-layer data twice of the chance stratum；
Individual-layer data in upper disk data file is projected in seismic data interpretation system, and with different
Mark represent the different depth of individual-layer data, judge that the depth of individual-layer data occurs according to mark
The position of mutation, as breakpoint location corresponding with the upper disk of the tomography；
Individual-layer data in lower wall data file is projected in seismic data interpretation system, and with different
Mark represent the different depth of individual-layer data, judge that the depth of individual-layer data occurs according to mark
The position of mutation, as breakpoint location corresponding with the lower wall of the tomography；And
According to the Seismic reflection character in the breakpoint for thering is wellblock to identify, in the earthquake number without wellblock
According to middle similar reflection is found, to determine the breakpoint without wellblock tomography, so as to distinguish described without wellblock
The upper disk and lower wall of tomography.
2. it is according to claim 1 for oil field development area differentiation tomography upper lower burrs method, the party
Method also includes：
In the case where the tomography is normal fault, depth difference according to individual-layer data determines the upper disk of tomography
And lower wall.
3. it is according to claim 1 and 2 for oil field development area differentiation tomography upper lower burrs method,
Further include：As follows come to judge the tomography be reversed fault or normal fault：
According to drilling well individual-layer data, drilling strata individual-layer data twice is judged whether, if it does,
The tomography is then thought for reversed fault, otherwise it is assumed that the tomography is normal fault.
4. it is according to claim 3 for oil field development area differentiation tomography upper lower burrs method, wherein
According to drilling well individual-layer data, judge whether that drilling strata individual-layer data twice includes：
If the individual-layer data of a certain drilling well differs by more than two component layer datas of threshold value comprising depth, then it is assumed that
The individual-layer data of the drilling well is drilling strata individual-layer data twice.
5. it is according to claim 4 for oil field development area differentiation tomography upper lower burrs method, wherein,
By depth is deeper in two component layer datas, one group is stored in lower wall data file, one group of shallower guarantor of depth
It is stored in disk data file.
6. it is according to claim 1 and 2 for oil field development area differentiation tomography upper lower burrs method,
Wherein described mark is one or more in color, symbol or gray scale.
7. it is according to claim 1 and 2 for oil field development area differentiation tomography upper lower burrs method,
Wherein, the upper disk and lower wall for distinguishing the tomography without wellblock include：
Being obtained according to the breakpoint location for having wellblock has the fault earthquake breakpoint feature of wellblock；
There is the fault earthquake breakpoint feature of wellblock in the geological data learning without well area to recognize without wellblock
Breakpoint, so as to distinguish the upper disk and lower wall of the tomography without well area.
8. it is according to claim 7 for oil field development area differentiation tomography upper lower burrs method, wherein
The fault earthquake breakpoint is characterized as wave group feature and/or reflex.
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| CN112431578B (en) * | 2020-12-02 | 2022-07-29 | 山西潞安环保能源开发股份有限公司常村煤矿 | Method for extracting mine gas from low-permeability coal seam containing fault |
| CN113176608A (en) * | 2021-04-27 | 2021-07-27 | 中国石油大学(华东) | DAS six-component seismic signal decoupling and recovery method for spirally-wound optical fiber |
| CN115793073A (en) * | 2023-02-14 | 2023-03-14 | 广东石油化工学院 | Energy prediction method and system based on tomogram |
| CN115793073B (en) * | 2023-02-14 | 2023-04-11 | 广东石油化工学院 | Energy prediction method and system based on tomogram |
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