CN105093333B - Fracture-cavity type carbonate reservoir evaluation methods based on earthquake-well logging calibration - Google Patents
Fracture-cavity type carbonate reservoir evaluation methods based on earthquake-well logging calibration Download PDFInfo
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Abstract
The invention discloses a kind of fracture-cavity type carbonate reservoir evaluation methods based on well-shooting calibration, include the following steps：A. collapse log progress wellbore correction, the standardization of more wells and consistency treatment；B. the well logging after loading processing and seismic data are demarcated to carry out well shake, extract the wavelet for being adapted to target zone, and carry out poststack determinated back analysis and poststack geostatistical inversion；C. by counting the relation between each well wave impedance and reservoir evaluation parameter porosity, more well impedances and porosity plate are tentatively obtained；D. the leakage and emptying well section porosity and interval transit time and density relationship of part well are counted, corrects more well impedances and porosity plate；E. using more well impedances and porosity plate, porosity data's body is obtained；F. porosity data's body is utilized, fracture hole type carbonate reservoir is evaluated.The present invention realizes the exact evaluation to fracture hole type Carbonate Reservoir Characteristics.
Description
Technical field
The present invention relates to the seismic technology field of oil exploration, particularly it is a kind of be used in oil seismic exploration based on ground
The fracture-cavity type carbonate reservoir evaluation methods of shake-well logging calibration.
Background technology
Conventional reservoir evaluation method mainly comprehensively utilizes the bases such as actual well drilled, well logging, rock core in current oil exploration
Plinth data, carries out the research of reservoir lithology, physical property and fluid etc., so as to obtain a series of reservoirs such as porosity, permeability
Evaluating.Due to the evaluation to reservoir accurately whether directly affect later development, such as carrying out exploitation by the evaluation of mistake will make
Into huge economic loss.So it is particularly significant to carry out accurate evaluation to reservoir.
For fracture-cavity type carbonate reservoir, using conventional logging evaluation reservoir, there are following technological deficiency：
(1) fracture-cavity type carbonate reservoir is during actual well drilled, it is easy to drilling fluid leakage and emptying occurs, causes
Reservoir Section log lacks or distortion；
(2) since large-scale fracture hole body oil reservoir bottom is generally water layer, fracture development and necessary massive hydraulic fracture ability business
Industryization is gone into operation.Therefore, " taking off scalp " mode completion is usually used, i.e., has just been drilled into reservoir and completion pressure break, Reservoir Section is not just bored
Into；
(3) since the calculating scale of well logging, earthquake, pressure break and oil reservoir influences, in strong heterogeneous fracture-cavity type carbonate
During evaluating reservoir, when well is drilled into Dong Bi, hole side or slit band, well logging information is often difficult to produce with post-fracturing actual oil reservoir
Information is coincide, and earthquake information is more identical with producing.
In view of above-mentioned existing reservoir evaluation methods are used for problem present in fracture-cavity type carbonate evaluating reservoir and lack
Fall into, the present inventor finally have developed a kind of based on earthquake-well logging calibration by working experience for many years and abundant professional knowledge
Fracture-cavity type carbonate reservoir evaluation methods, can effectively solve the problems, such as existing in the prior art, it is more possessed practicality.
For it is above-mentioned the problem of, not yet propose effective solution at present.
The content of the invention
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of based on earthquake-well logging calibration
Fracture-cavity type carbonate reservoir evaluation methods, realize the exact evaluation to fracture hole type Carbonate Reservoir Characteristics.
In order to solve the above-mentioned technical problem, present invention employs following technical solution：
Based on the fracture-cavity type carbonate reservoir evaluation methods of earthquake-well logging calibration, include the following steps：
A. collapse well logging log progress wellbore correction, the standardization of more wells and consistency treatment；
B. in the step a on the basis of basic data Quality Control, well logging and seismic data after loading processing carry out
Well-shake calibration, extracts the wavelet for being adapted to target zone, and carry out poststack determinated back analysis and poststack geostatistical inversion；
C. by counting the relation between each well wave impedance and reservoir evaluation parameter porosity, tentatively obtain more well impedances with
Porosity plate；
D. the leakage and emptying well section porosity and interval transit time and density relationship of part well are counted, correct more well impedances with
Porosity plate；
E. using more well impedances and porosity plate, porosity data's body is obtained；
F. porosity data's body is utilized, fracture hole type carbonate reservoir is evaluated.
Preferably, realize that wellbore collapses correction, more wells standardization and consistent using Powerlog platforms in the step a
Property processing.
Preferably, in the step b, using the well logging after Jason platform loading processings and seismic data come carry out well-
Shake calibration.
According to another aspect of the present invention, the present invention proposes a kind of fracture hole type carbonic acid based on earthquake-well logging calibration
Rock salt reservoir evaluation methods, this method include：At correction, the standardization of more wells and the uniformity of collapsing to log progress wellbore
Reason, the log data after generation processing；By being carried out to the log data after the processing and the seismic data obtained in advance
Well-shake calibration, extraction and matched wavelet of target zone；Poststack determinated back analysis is carried out according to wavelet matched with the target zone
With poststack geostatistical inversion, p-wave impedance inversion result is generated；More wells are obtained by the p-wave impedance inversion result to hinder
Anti- and porosity plate；More well impedances are modified with porosity plate；According to revised more well impedances and hole
Degree plate evaluates fracture hole type carbonate reservoir.
Further, obtaining more well impedances and the step of porosity plate by the p-wave impedance inversion result includes：
The relation between the porosity in the p-wave impedance and reservoir evaluation parameter is counted, generates more well impedances and porosity figure
Version.
Further, the step of being modified to more well impedances with porosity plate includes：Count in more wells
The leakage and emptying well section porosity and interval transit time and density relationship of part well, correct more well impedances and porosity figure
Version.
Further, fracture hole type carbonate reservoir is evaluated with porosity plate according to revised more well impedances
The step of include：According to revised more well impedances and porosity plate generation porosity data's body；According to the hole number of degrees
The fracture-cavity type carbonate reservoir is evaluated according to body.
Further, collapse log progress wellbore correction, the standardization of more wells and consistency treatment, after generation processing
Well logging and the step of seismic data include：Using Powerlog platforms realize the wellbore collapse correction, more wells standardization and
Consistency treatment.
Further, by carrying out well-shake mark to the log data after the processing and the seismic data obtained in advance
The step of determining, extracting wavelet matched with target zone includes：Well logging after the processing and described is loaded using Jason platforms
Shake data are demarcated to carry out the well-shake, extraction and the matched wavelet of the target zone.
Further, poststack determinated back analysis is carried out according to the wavelet of the suitable target zone and poststack geostatistics is anti-
The step of drilling, generating p-wave impedance inversion result includes：By adjusting the determinated back analysis and poststack geostatistical inversion
Inverted parameters, generation meets the p-wave impedance inversion result of underground physical condition parameter.
Compared with prior art, the beneficial effects of the present invention are：
The present invention utilizes earthquake-well logging calibration technique pair for the problems of fracture-cavity type carbonate evaluating reservoir
Reservoir is evaluated, and is coincide with actual creation data, the perfect technical system of carbonate rock fractured cave type reservoir research, for storage
Amount evaluation, evaluating reservoir and development and production are laid a solid foundation.
Brief description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the present invention.
Fig. 2 is used for X wells earthquake-well logging for the method for the present invention and demarcates design sketch.
Embodiment
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Attached drawing, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work, should all belong to the model that the present invention protects
Enclose.
It should be noted that term first, second " in description and claims of this specification and above-mentioned attached drawing etc.
It is for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that the number so used
According to that can exchange in the appropriate case, so that the embodiment of the present invention described herein can be with except illustrating or describing herein
Those beyond order implement.In addition, term " comprising " and " having " and their any deformation, it is intended that covering is not
Exclusive includes, for example, contain the process of series of steps or unit, method, system, product or equipment be not necessarily limited to it is clear
Those steps or unit that ground is listed, but may include not list clearly or for these processes, method, product or set
Standby intrinsic other steps or unit.
Fig. 1 is the flow chart of the present invention.As shown in Figure 1, the fracture-cavity type carbonate reservoir based on earthquake-well logging calibration is commented
Valency method, includes the following steps：
A. the quality control stringent to log is realized on the Powerlog platforms of Hui Gu companies：For the wellbore that collapses
The curve at place, first looks for the preferable well section of and wellbore similar with the reservoir lithology at wellbore, obtains their dependency relation,
Using multivariate method to carrying out curvature correction at the wellbore that collapses；Then by selecting suitable index bed to carry out more well standards
Change；On this basis, the objective interpretation of " uniformity " is carried out using optimal method according to actual mineral skeleton；
B. in the step a on the basis of basic data Quality Control, on the Jason platforms of Hui Gu companies after loading processing
Well logging and seismic data carry out the calibration of well-shake, extract the wavelet for being adapted to target zone, carry out poststack geostatistical inversion,
It is anti-by the inspection to the pdf functions of input and output, lithology probability volume, lithology/attribute volume horizon slice and blind shaft, constantly adjustment
Parameter is drilled, so as to obtain being more nearly the fine p-wave impedance inversion result of underground situation；
C. by counting the relation between each well wave impedance and reservoir evaluation parameter porosity, tentatively obtain more well impedances with
Porosity plate；
D. the leakage and emptying well section porosity and interval transit time and density relationship of part well are counted, correct more well impedances with
Porosity plate；
E. on the basis of the fine p-wave impedance inversion result of b step, using more well impedances and porosity plate, poststack is passed through
Geostatistics Cloud transform obtains porosity data's body；
F. porosity data's body is utilized, fracture hole type carbonate reservoir is evaluated.
Size and reservoir quality positive correlation due to porosity, so it can be learnt that corresponding storage after obtaining porosity data's body
The quality of layer.
Fig. 2 demarcates design sketch for X wells earthquake-well logging, is understood using inversion result and impedance and porosity relation, the survey
Well does not explain that section reservoir effective thickness is 34m, and average pore 2.5%, misses section and be assigned a value of 7% by the result of inverting, this well
Do not bore and meet reservoir effective thickness 14m, porosity 8%, actual Reservoir Section tires out 0.2166 ten thousand tons of oil-producing, is kissed with evaluating reservoir result
Close.And conventional method can not often carry out fine evaluating reservoir for the stratum not being drilled into.
In a kind of optional embodiment, the present embodiment can also propose a kind of fracture hole based on earthquake-well logging calibration
Type Evaluation of Carbonate Reservoir method, this method include：To log carry out wellbore collapse correction, more wells standardization and unanimously
Property processing, generation processing after log data；By to the log data after the processing and the seismic data obtained in advance come
Carry out well-shake calibration, extraction and matched wavelet of target zone；Poststack certainty is carried out according to wavelet matched with the target zone
Inverting and poststack geostatistical inversion, generate p-wave impedance inversion result；Obtained by the p-wave impedance inversion result more
Well impedance and porosity plate；More well impedances are modified with porosity plate；According to revised more well impedances with
Porosity plate evaluates fracture hole type carbonate reservoir.
Optionally, obtaining more well impedances and the step of porosity plate by the p-wave impedance inversion result includes：System
The relation between the porosity in the p-wave impedance and reservoir evaluation parameter is counted, generates more well impedances and porosity figure
Version.
Optionally, the step of being modified to more well impedances with porosity plate includes：Count in the middle part of more wells
Divide the leakage and emptying well section porosity and interval transit time and density relationship of well, correct more well impedances and porosity plate.
Optionally, fracture hole type carbonate reservoir is evaluated according to revised more well impedances and porosity plate
Step includes：According to revised more well impedances and porosity plate generation porosity data's body；According to the porosity data
Body evaluates the fracture-cavity type carbonate reservoir.
Optionally, collapse log progress wellbore correction, the standardization of more wells and consistency treatment, after generation processing
The step of well logging and seismic data, includes：Using Powerlog platforms realize the wellbore collapse correction, more wells standardization and one
The processing of cause property.
Further, by carrying out well-shake mark to the log data after the processing and the seismic data obtained in advance
The step of determining, extracting wavelet matched with target zone includes：Well logging after the processing and described is loaded using Jason platforms
Shake data are demarcated to carry out the well-shake, extraction and the matched wavelet of the target zone.
Optionally, poststack determinated back analysis is carried out according to the wavelet of the suitable target zone and poststack geostatistics is anti-
The step of drilling, generating p-wave impedance inversion result includes：By adjusting the determinated back analysis and poststack geostatistical inversion
Inverted parameters, generation meets the p-wave impedance inversion result of underground physical condition parameter.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment
The part of detailed description, may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, can pass through others
Mode is realized.Wherein, device embodiment described above is only schematical, such as the division of the unit, Ke Yiwei
A kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
Connect, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
Embody, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment the method for the present invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
The above is only the 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 also should
It is considered as protection scope of the present invention.
Claims (10)
1. the fracture-cavity type carbonate reservoir evaluation methods based on earthquake-well logging calibration, it is characterised in that include the following steps：
Step a. to log carry out wellbore collapse correction, more wells standardize and consistency treatment；
In the step a on the basis of basic data Quality Control, well logging and seismic data after loading processing carry out step b.
Well-shake calibration, extracts the wavelet for being adapted to target zone, and carry out poststack determinated back analysis and poststack geostatistical inversion；
Step c. by counting the relation between each well wave impedance and reservoir evaluation parameter porosity, tentatively obtain more well impedances with
Porosity plate；
The leakage and emptying well section porosity and interval transit time and density relationship of step d. statistics part wells, correct more well impedances with
Porosity plate；
Step e. obtains porosity data's body using more well impedances and porosity plate；
Step f. utilizes porosity data's body, and fracture hole type carbonate reservoir is evaluated.
2. according to the method described in claim 1, it is characterized in that, wellbore is realized using Powerlog platforms in the step a
Collapse correction, the standardization of more wells and consistency treatment.
3. according to the method described in claim 1, it is characterized in that, in the step b, after Jason platform loading processings
Well logging and seismic data carry out the calibration of well-shake.
4. the fracture-cavity type carbonate reservoir evaluation methods based on earthquake-well logging calibration, it is characterised in that including：
Collapse log progress wellbore correction, the standardization of more wells and consistency treatment, the log data after generation processing；
By being demarcated to the log data after the processing and the seismic data obtained in advance to carry out well-shake, extraction and purpose
The matched wavelet of layer；
Poststack determinated back analysis and poststack geostatistical inversion are carried out according to wavelet matched with the target zone, generate compressional wave
Impedance Inversion result；
More well impedances and porosity plate are obtained by the p-wave impedance inversion result；
More well impedances are modified with porosity plate；
Fracture hole type carbonate reservoir is evaluated with porosity plate according to revised more well impedances.
5. according to the method described in claim 4, it is characterized in that, more well impedances are obtained by the p-wave impedance inversion result
Include with the step of porosity plate：
The relation between the porosity in the p-wave impedance and reservoir evaluation parameter is counted, generates more well impedances and hole
Spend plate.
6. according to the method described in claim 4, it is characterized in that, more well impedances and porosity plate be modified
Step includes：
The leakage of part well and emptying well section porosity and interval transit time and density relationship in more wells are counted, is corrected described more
Well impedance and porosity plate.
7. according to the method described in claim 4, it is characterized in that, according to revised more well impedances and porosity plate opposite joint
The step of hole type carbonate reservoir is evaluated includes：
According to revised more well impedances and porosity plate generation porosity data's body；
The fracture-cavity type carbonate reservoir is evaluated according to porosity data's body.
8. according to the method described in claim 4, it is characterized in that, collapse to log progress wellbore correction, more well standards
Change and consistency treatment, well logging and the step of seismic data after generation processing include：
Using Powerlog platforms realize the wellbore collapse correction, more wells standardization and consistency treatment.
9. according to the method described in claim 4, it is characterized in that, by the log data after the processing and advance acquisition
Seismic data include the step of carrying out the calibration of well-shake, extract wavelet matched with target zone：
Well logging after the processing and the seismic data are loaded using Jason platforms to carry out the well-shake calibration, extraction with
The matched wavelet of target zone.
10. according to the method described in claim 4, it is characterized in that, poststack is carried out according to wavelet matched with the target zone
The step of determinated back analysis and poststack geostatistical inversion, generation p-wave impedance inversion result, includes：
By adjusting the inverted parameters of the determinated back analysis and poststack geostatistical inversion, generation meets underground physical condition
The p-wave impedance inversion result of parameter.
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| CN112147696B (en) * | 2019-06-27 | 2023-05-23 | 中国石油化工股份有限公司 | Shale reservoir performance earthquake evaluation method and system based on reservoir performance index |
| CN112270061B (en) * | 2019-07-08 | 2022-11-04 | 中国石油天然气股份有限公司 | Fracture-cavity carbonate oil-gas reservoir water outlet well drainage yield increase potential evaluation method |
| CN112415581B (en) * | 2019-08-23 | 2022-05-24 | 中国石油化工股份有限公司 | Fracture-cave reservoir inversion method and system |
| CN112946754B (en) * | 2019-12-10 | 2024-03-01 | 中国石油天然气集团有限公司 | Reservoir porosity prediction method and device |
| CN113325468B (en) * | 2020-02-28 | 2023-06-30 | 中国石油天然气集团有限公司 | Reservoir fracture-cavity distribution range prediction method and device |
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| WO2009070365A1 (en) * | 2007-11-27 | 2009-06-04 | Exxonmobil Upstream Research Company | Method for determining the properties of hydrocarbon reservoirs from geophysical data |
| CN101887132A (en) * | 2009-05-15 | 2010-11-17 | 中国石油天然气股份有限公司 | Method for quantificationally predicting sandstone reservoir fluid saturation by combining well and seism |
| CN102749651B (en) * | 2012-07-12 | 2015-07-08 | 恒泰艾普石油天然气技术服务股份有限公司 | Calibration method for fracture logging of reservoir |
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