CN107797154A

CN107797154A - A kind of electric imaging logging image scale method and device

Info

Publication number: CN107797154A
Application number: CN201710866241.8A
Authority: CN
Inventors: 冯周; 武宏亮; 李宁; 王克文; 冯庆付; 李雨生
Original assignee: China Petroleum and Natural Gas Co Ltd
Current assignee: China Petroleum and Natural Gas Co Ltd
Priority date: 2017-09-22
Filing date: 2017-09-22
Publication date: 2018-03-13
Anticipated expiration: 2037-09-22
Also published as: CN107797154B

Abstract

The application provides a kind of electric imaging logging image scale method and device.Methods described includes：The electric imaging logging data of well section to be analyzed is gathered, electric imaging logging image is obtained according to electric imaging logging data；The electric imaging logging average current one according to corresponding to electric imaging logging image calculates different depth point in well section to be analyzed；According to electric imaging logging average current one and the Conventional Logs obtained in advance, the receptance function between structure electric imaging logging average current one and conventional logging shallow resistivity；According to receptance function and electric imaging logging image, depth window average current two corresponding to different depth window in well section to be analyzed is calculated；According to depth window average current two and Conventional Logs, calibration factor corresponding to different depth window is calculated；Scale is carried out to electric imaging logging image according to calibration factor.Described device can be used for performing the above method.Using each embodiment in the application, the accuracy of electric imaging logging image scale, and the treatment effeciency of well-log information can be improved.

Description

A kind of electric imaging logging image scale method and device

Technical field

The application belongs to electric imaging logging data processing technology field, more particularly to a kind of electric imaging logging image is carved Spend method and device.

Background technology

Electric imaging logging is the imaging logging method being most widely used at present, in complex lithology and unconventional reservoir oil gas Played an important role in exploration.Because the button electrode system used on electric imaging logging instrument is non-focusing electrode system, it is surveyed Amount response is substantially the relative change of borehole wall resistivity of media.When carrying out RESERVOIR INTERPRETATION evaluation using electric imaging logging data It need to be demarcated, that is, utilize conventional shallow resistivity log scale image.How electric imaging logging image to be entered Row accurate calibration, it is the basic and crucial of influence electric imaging logging data quantitative assessment precision.

In the prior art, electric imaging logging resistivity scale mainly has two methods：One kind is to be based on man-machine interactively scale, Conventional logging shallow resistivity curve and electric imaging logging image average current curve are projected i.e. in cross plot, pass through friendship Mutual mode determines that both respond scale imaging logging image after change function.This method scale effect is with explaining Personnel Skill Levels Correlation, workload is big, is unfavorable for computer automation processing, simultaneously because full well section is masked not using unified function scale With the difference of Reservoir Section fluid properties, the accuracy of electric imaging logging image scale is reduced, influences quantitative computational accuracy.It is another Kind of method is point-by-point scale, by by depth window count electric imaging logging image average current and with the conventional shallow electricity in corresponding depth point Values of resistivity contrasts, and obtains scale electric imaging logging image after the calibration factor of each depth window, but due to different size of Electrical imaging It is not constant, simple proportionate relationship between logging current and the response of conventional resistive rate, can be caused using this method scale larger Error.Therefore, the accuracy of electric imaging logging image scale how is improved, turns into technical problem urgently to be resolved hurrily.

The content of the invention

The application purpose is to provide a kind of electric imaging logging image scale method and device, obtains electric imaging logging and be averaged Receptance function between electric current one and conventional logging shallow resistivity, according to receptance function, obtain scale corresponding to different depth window Coefficient, the scale of electric imaging logging image is carried out, improve the accuracy of electric imaging logging image scale.

On the one hand this application provides a kind of electric imaging logging image scale method, including：

The electric imaging logging data of well section to be analyzed is gathered, electric imaging logging map is obtained according to the electric imaging logging data Picture；

The electric imaging logging according to corresponding to the electric imaging logging image calculates different depth point in the well section to be analyzed Average current one；

According to the electric imaging logging average current one and the Conventional Logs obtained in advance, build the Electrical imaging and survey Receptance function between well average current one and conventional logging shallow resistivity；

According to the receptance function and the electric imaging logging image, different depth window pair in the well section to be analyzed is calculated The depth window average current two answered；

According to the depth window average current two and the Conventional Logs, scale system corresponding to different depth window is calculated Number；

Scale is carried out to the electric imaging logging image according to the calibration factor.

Further, it is described according to the He of electric imaging logging average current one in another embodiment of methods described The Conventional Logs obtained in advance, build the sound between the electric imaging logging average current one and conventional logging shallow resistivity Function is answered, including：

The electric imaging logging average current one is divided into predetermined quantity electric current section；

Conventional logging corresponding to electric imaging logging average current one in the electric current section and the electric current section is shallow Resistivity carries out Function Fitting, obtains interval function corresponding to the different electric current sections；

According to the interval function, build between the electric imaging logging average current one and conventional logging shallow resistivity Piecewise function, using the piecewise function as the receptance function.

Further, in another embodiment of methods described, the Function Fitting includes：Double-log straight line least square Fitting.

Further, in another embodiment of methods described, the interval function includes linear equation function, according toCalculate the linear equation letter Several coefficients；

In above formula, a, b represent the coefficient of the linear equation function；Sn represents that the electric imaging logging average current one exists The quantity of depth point in the electric current section；Represent conventional logging shallow resistivity corresponding to i-th of depth point； Represent electric imaging logging average current one corresponding to i-th of depth point.

Further, it is described according to the receptance function and the electric imaging logging image, calculate the well section to be analyzed The depth window average current two of middle different depth window, including：

According to Calculate depth window average current two corresponding to different depth window in the well section to be analyzed；

In above formula, I_aver(depth) the depth window average current two is represented；n_jRepresent depth point in the depth window Quantity；n_kRepresent the pole plate number of electric imaging logging instrument；n_lRepresent the button electrode number on the electric imaging logging instrument pole plate Mesh；I_image(j, k, l) represents k-th of pole plate, the electricity of l-th of button electrode measurement in the depth window at j-th of depth point Flow valuve；A (j, k, l), b (j, k, l) represent k-th of pole plate, l-th of the button electrode in the depth window at j-th of depth point The coefficient of the corresponding receptance function.

Further, it is described according to the depth window average current two and described in another embodiment of methods described Conventional Logs, calibration factor corresponding to the depth window is calculated, including：

According to C (depth)=1000/RS (depth)/I_aver(depth) calibration factor corresponding to the depth window is calculated；

In above formula, C (depth) represents calibration factor corresponding to the depth window；RS (depth) represents the normal of corresponding depth Rule well logging shallow resistivity value；I_aver(depth) the depth window average current two is represented.

Further, it is described that the Electrical imaging is surveyed according to the calibration factor in another embodiment of methods described Borehole image carries out scale, including：

According to I_scaled(j, k, l)=C (depth) I_image(j, k, l) is to the electric imaging logging image in different depth window Carry out scale；

In above formula, I_scaled(j, k, l) represents k-th of pole plate, l-th of the button in the depth window at j-th of depth point Current value after scale corresponding to electrode；C (depth) represents calibration factor corresponding to the depth window；I_image(j, k, l) is represented K-th of pole plate, the current value of l-th of button electrode measurement in the depth window at j-th of depth point.

Further, it is described according to calculating the electric imaging logging image in another embodiment of methods described Electric imaging logging average current one corresponding to different depth point in well section to be analyzed, including：

According to the electric imaging logging image, utilizeDescribed in calculating Electric imaging logging image calculates electric imaging logging average current one corresponding to different depth point in the well section to be analyzed；

In above formula,Represent the electric imaging logging average current one of depth point s opening positions；n_kRepresent electric imaging logging instrument The pole plate number of device；n_lRepresent the pole plate upper button electrode number of electric imaging logging instrument；I_image(s, k, l) represents the depth point K-th of pole plate of s opening positions, the current value of l-th of button electrode measurement.

On the other hand, this application provides a kind of electric imaging logging image graduation apparatus, including：

Log, for gathering the electric imaging logging data of well section to be analyzed, is surveyed as generation module according to the Electrical imaging Well data obtains electric imaging logging image；

The computing module of average current one, it is different in the well section to be analyzed for being calculated according to the electric imaging logging image Electric imaging logging average current one corresponding to depth point；

Receptance function acquisition module, for according to the electric imaging logging average current one and the conventional logging obtained in advance Data, build the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity；

The computing module of average current two, for according to the receptance function and the electric imaging logging image, described in calculating Depth window average current two corresponding to different depth window in well section to be analyzed；

Calibration factor computing module, for according to the depth window average current two and the Conventional Logs, calculating Calibration factor corresponding to different depth window；

Image calibration block, for carrying out scale to the electric imaging logging image according to the calibration factor.

Further, in another embodiment of described device, the receptance function acquisition module is specifically used for：

Further, in another embodiment of described device, the Function Fitting in the receptance function acquisition module Including：Double-log straight line least square fitting.

Further, in another embodiment of described device, the interval function includes linear equation function, correspondingly, the sound Function acquisition module is answered to be specifically used for basis Calculate the coefficient of the linear equation function；

In above formula, a, b represent the coefficient of the linear equation function；Sn represents the average current in the electric current section The quantity of interior depth point；Represent conventional logging shallow resistivity corresponding to i-th of depth point；Represent i-th of depth Electric imaging logging average current one corresponding to point.

Further, in another embodiment of described device, the computing module of average current two is specifically used for：

In above formula, I_aver(depth) the depth window average current two is represented；n_jRepresent depth point in the depth window Quantity；n_kRepresent the pole plate number of electric imaging logging instrument；n_lRepresent the button electrode number on the electric imaging logging instrument pole plate Mesh；I_image(j, k, l) represents k-th of pole plate, the electricity of l-th of button electrode measurement in the depth window at j-th of depth point Flow valuve；A (j, k, l), b (j, k, l) represent k-th of pole plate, l-th of the button electrode in the depth window at j-th of depth point The coefficient of the corresponding linear equation function.

Further, in another embodiment of described device, the calibration factor computing module is specifically used for：

Further, in another embodiment of described device, described image scale unit is specifically used for：

Further, in another embodiment of described device, the computing module of average current one is specifically used for：According to institute Electric imaging logging image is stated, is utilizedCalculate the electric imaging logging image Calculate electric imaging logging average current one corresponding to different depth point in the well section to be analyzed；

In above formula,Represent the electric imaging logging average current one of depth point s opening positions；n_kRepresent electric imaging logging instrument The pole plate number of device；n_lRepresent the pole plate upper button electrode number of electric imaging logging instrument；I_image(s, k, l) represents depth point s positions Put k-th of pole plate, the current value of l-th of button electrode measurement at place.

Another further aspect, present invention also provides a kind of electric imaging logging image graduation apparatus, including：Processor and it is used for The memory of processor-executable instruction is stored, realizes that above-mentioned electric imaging logging image is carved during instruction described in the computing device Degree method.

The electric imaging logging image scale method and device that the application provides, it can be calculated according to electric imaging logging image different Electric imaging logging average current one corresponding to depth point, for conventional logging shallow resistivity and electric imaging logging average current one Response characteristic, it is proposed that segmentation automatic Matching Method, obtain interval function corresponding to different electric current sections.Realize to conventional survey Well shallow resistivity responds the accurate of changing rule with electric imaging logging average current one and portrayed, and electric imaging logging map is carried out to be follow-up As scale provides accurate theoretical foundation.Meanwhile the application can be averaged by obtaining the depth window of electric imaging logging image Electric current two, obtain different depth window corresponding to calibration factor, carry out the point-by-point scales of different calibration factors.No longer be using electricity into As simple proportionate relationship between well logging average current one and conventional logging shallow resistivity, electric imaging logging image scale is carried out, Reduce the error of graduation, effectively increase the precision of electric imaging logging image scale, improve electric imaging logging image scale Accuracy.In addition, the application establishes a set of electric imaging logging image resistivity scale automatic calculating method and flow, Ke Yishi The automatic business processing of existing electric imaging logging image scale, can be obviously improved the treatment effeciency of well-log information.

Brief description of the drawings

, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments described in application, for those of ordinary skill in the art, do not paying the premise of creative labor Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of a kind of method flow signal for embodiment of electric imaging logging image scale method that the application provides Figure；

Fig. 2 is that electric imaging logging average current one is illustrated with the fitting of conventional logging shallow resistivity in a kind of embodiment of the application Figure；

Fig. 3 is electric imaging logging image scale effect diagram in a kind of embodiment of the application；

Fig. 4 is a kind of modular structure schematic diagram of embodiment of electric imaging logging image graduation apparatus that the application provides；

Fig. 5 is the modular structure schematic diagram for another electric imaging logging image graduation apparatus embodiment that the application provides.

Embodiment

In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation Example only some embodiments of the present application, rather than whole embodiments.It is common based on the embodiment in the application, this area The every other embodiment that technical staff is obtained under the premise of creative work is not made, it should all belong to the application protection Scope.

Electric imaging logging technology can be used for identifying lithology, analyze sedimentary structure, identification crack etc., use Electrical imaging skill When art is logged well, electric imaging logging instrument can be utilized to obtain electric imaging logging image.Electric imaging logging instrument includes multiple poles Plate and button electrode, it can be used for recording the log data at different well depths.The electric imaging logging that electric imaging logging instrument obtains The log data such as current value corresponding at different well depths can be included in image, can be with by the analysis to electric imaging logging image Obtain structural information of reservoir etc..But the button electrode system used on electric imaging logging instrument is non-focusing electrode system, measurement Response is substantially the relative change of borehole wall resistivity of media.And when carrying out RESERVOIR INTERPRETATION evaluation, it is desirable that borehole wall medium Actual resistivity value, rather than relative change.Therefore, embodiment provided herein can be by electric imaging logging image The value of resistivity demarcated, as electric imaging logging image scale.

Fig. 1 is a kind of a kind of method flow signal for embodiment of electric imaging logging image scale method that the application provides Figure, as shown in figure 1, the electric imaging logging image scale method that the application provides includes：

S1, collection well section to be analyzed electric imaging logging data, Electrical imaging is obtained according to the electric imaging logging data and surveyed Borehole image.

Specifically, by gathering the electric imaging logging data of well section to be analyzed, Ke Yigen in one embodiment of the application Electric imaging logging image is obtained according to the electric imaging logging data collected.Electric imaging logging data can include electric imaging logging instrument The initial measurement data that device gathers from underground, such as includes：Current value, the shape of electric imaging logging instrument at different depth position State, the orientation of pole plate and inclination angle etc..The electric imaging logging data collected can be handled, obtain electric imaging logging map Picture.Such as：Electric imaging logging data can be carried out to velocity correction, acceleration correction, equalization correction etc., while can be utilized Well-log information edit tool is (such as：Forward Logging Softwares etc.) electric imaging logging data and Conventional Logs are subjected to depth The pretreatment such as alignment.By the pretreatment to electric imaging logging data can obtain reflection the stratum borehole wall electrically change two dimension into As image, i.e. electric imaging logging image.

S2, Electrical imaging is surveyed according to corresponding to the electric imaging logging image calculates different depth point in the well section to be analyzed Well average current one.

Specifically, after getting electric imaging logging image, calculated according to electric imaging logging image different in well section to be analyzed Electric imaging logging average current one corresponding to depth point.Depth point refers in well section to be analyzed at different depth position, Electrical imaging Logger can collect the data at different depth point.Electric imaging logging instrument may include more at same depth location Individual pole plate and button electrode.At i.e. same depth location, multiple current values may be collected, same depth in electric imaging logging image Multiple current values may be corresponding with degree point.According to electric imaging logging image, multiple electric currents at same depth point can be obtained Value, according to the current value of acquisition, can obtain the electric imaging logging average current one at the depth point.Different depth point, it is corresponding Different Electrical imaging average current values.

In one embodiment that the application provides, according to the electric imaging logging image, equation below (1) can be utilized to count Calculate electric imaging logging average current one corresponding to different depth point in well section to be analyzed：

In above formula,The electric imaging logging average current one of depth point s opening positions can be represented；n_kCan represent electricity into As the pole plate number of logger；n_lThe pole plate upper button electrode number of electric imaging logging instrument can be represented；I_image(s, k, l) can With represent k-th of pole plate of depth point s opening positions, the measurement of l-th button electrode current value, I_image(s, k, l) can pass through Electric imaging logging image obtains.Certainly, above-mentioned formula (1) is a kind of embodiment, and formula (1) can also be carried out as needed Deformation or conversion, the application are not especially limited.

S3, according to the electric imaging logging average current one and the Conventional Logs obtained in advance, obtain the electricity into As the receptance function between well logging average current one and conventional logging shallow resistivity.

Specifically, according to electric imaging logging image, can be obtained at well section different depth point to be analyzed using formula (1) Electric imaging logging average current one, it is of course also possible to use the electric imaging logging that other method obtains at different depth point is averaged Electric current one, the application is not especially limited.Conventional Logs described in the present embodiment can include：Gamma ray log, The well-log informations such as resistivity logging, density, neutron, sound wave, Conventional Logs can also include other surveys as needed certainly Well data, the application are not especially limited.The value of conventional logging shallow resistivity can be obtained according to Conventional Logs, by right Electric imaging logging average current one corresponding to conventional logging shallow resistivity and different depth point is analyzed, and builds electric imaging logging Receptance function between average current one and conventional logging shallow resistivity.Form or graphical analysis conventional logging can specifically be utilized Changing rule between electric imaging logging average current one corresponding to shallow resistivity and different depth point, build receptance function.

Such as：Electrical imaging corresponding to form or Functional Analysis conventional logging shallow resistivity and different depth point can be utilized to survey Changing rule between well average current one, the changing rule obtained according to analysis, preset conventional logging shallow resistivity and difference Functional relation between electric imaging logging average current one corresponding to depth point.Further according to conventional logging shallow resistivity and Electrical imaging The concrete numerical value of well logging draw electric current, is adjusted to default functional relation, obtains receptance function.It is of course also possible to use Other modes obtain the receptance function between electric imaging logging average current one and conventional logging shallow resistivity, such as function is intended Legal etc., the application is not especially limited.Response letter between electric imaging logging average current one and conventional logging shallow resistivity Number, the variation tendency and rule that can reflect between electric imaging logging average current one and conventional logging resistivity response.

S4, according to the receptance function and the electric imaging logging image, calculate different depth in the well section to be analyzed Depth window average current two corresponding to window.

Specifically, depth window can refer to the scope of the certain depth intervals of well section to be analyzed, such as：Take 0.125 meter of conduct The interval of one depth intervals, then it is considered that 5000m-5000.125m, 5000.125m-5000.250m correspond to two respectively Depth window.Multiple depth points may be included in each depth window, such as：5000.0025th, 5000.0050.5000.0075 is belonged to Depth point in depth window 5000m-5000.125m.It is shallow according to the electric imaging logging average current one and conventional logging that get Receptance function and electric imaging logging image between resistivity, can calculate depth window average current corresponding to different depth window Two, further obtain the relation between the electric imaging logging average current one at conventional shallow resistivity and different depth position.Example Such as：According to electric imaging logging image, the current value of electric imaging logging corresponding to depth point in each depth window can be obtained.Can be with It is corresponding to depth point in depth window using the receptance function between electric imaging logging average current one and conventional logging shallow resistivity Current value be modified.The depth window average current two according to corresponding to revised current value obtains different depth window, each Depth window may correspond to different depth window average currents two.

Electric imaging logging average current one is typically direct linear averaging, it is therefore an objective to obtains electricity by the statistics of full well section Variation tendency and rule between average current and conventional logging the shallow resistivity response of imaging logging image.The average electricity of depth window Stream two is further calculated and obtained on the basis of electric imaging logging average current one.Depth window average current two may be considered According to the changing rule between electric imaging logging average current one and conventional shallow resistivity, to electric imaging logging average current one Further amendment.Depth window average current two more accurately can reflect at different depth position, what electric imaging logging obtained Relation between current value and conventional logging resistivity, accurate data basis is provided for the scale of electric imaging logging image.

S5, according to the depth window average current two and the Conventional Logs, calculate and carved corresponding to different depth window Spend coefficient.

Specifically, after getting depth window average current two corresponding to different depth window, according to depth window average current two And Conventional Logs, calculate calibration factor corresponding to different depth window.Calibration factor can be more accurate corresponding to different depth window The relation between electric imaging logging average current one and conventional logging shallow resistivity in true reflection different depth window.

S6, according to the calibration factor to the electric imaging logging image carry out scale.

Specifically, electric imaging logging image scale includes the current value that electric imaging logging instrument measures being converted to stratum electricity Resistance rate, it is referred to as electric imaging logging demarcation.After getting calibration factor corresponding to different depth window, according to the quarter got Spend coefficient and scale is carried out to electric imaging logging image.Such as：Multiple depth points may be included in depth window, if electric imaging logging is adopted Sample then using 0.125 meter of depth intervals as interval, then can include 50 Electrical imagings at intervals of 0.0025m in a depth window The depth point of well logging.Judge to need depth window corresponding to different depth point in the electric imaging logging image of scale, further obtain Calibration factor corresponding to different depth point corresponding to depth window, you can to get calibration factor corresponding to different depth point. Using the achievement of the current value calibration factor corresponding with depth point of electric imaging logging instrument measurement corresponding at depth point as electric Current value after imaging logging image scale.Certainly other method can also be used, electric imaging logging is completed using calibration factor The scale of image, the application are not especially limited.

The electric imaging logging image scale method that the application provides, according to the electric imaging logging data and routine collected Well-log information, the receptance function between electric imaging logging average current one and conventional logging shallow resistivity is got, and further The depth window average current two according to corresponding to the receptance function got obtains different depth window, according to depth window average current two Calibration factor corresponding to different depth window is obtained, the scale of electric imaging logging image is finally completed according to calibration factor.Realize Electric imaging logging average current one is portrayed with the accurate of conventional logging change in resistance rule, further increases electric imaging logging The accuracy of image scale.

It is described according to the electric imaging logging average current one and the routine obtained in advance on the basis of above-described embodiment Well-log information, the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity is built, including：

Specifically, get in well section to be analyzed after electric imaging logging average current one corresponding to different depth point, at this Apply in one embodiment, the electric imaging logging average current one got is divided into predetermined quantity electric current section, can be with N number of electric current section, i.e. (- ∝, I are divided into according to the scope of electric imaging logging average current one₁]、(I₁, I₂]、(I₂, I₃]…… (I_N-1, I_N].Certainly, specific dividing mode and the number in electric current section can be set according to actual conditions, and the application does not make It is specific to limit.Such as：If the minimum value of electric imaging logging average current one is corresponding to different depth point in one embodiment 0.2, maximum 35, can be divided into by the size distribution of the value of electric imaging logging average current one [0.2,1], (1,5], (5, 10], (10,35] four electric current sections, other dividing modes can also be used certainly.By electric imaging logging average current stroke , will be each in the electric imaging logging average current one in different electric current sections and electric current section after being divided into predetermined quantity electric current section Conventional logging shallow resistivity corresponding to depth point carries out Function Fitting, obtains interval function corresponding to different electric current sections.Will not Be combined with interval function corresponding to electric current section obtain electric imaging logging average current one and conventional logging shallow resistivity it Between piecewise function, can be using the piecewise function of acquisition as the reflection electric imaging logging average current one and shallow resistance of conventional logging The receptance function of response pattern between rate.

In the application one embodiment, double-log straight line least square fitting method can be used in different electric current sections Corresponding with the electric current section Nei Ge depth points conventional logging shallow resistivity of electric imaging logging average current one carry out Function Fitting. Electric imaging logging average current one and conventional logging shallow resistivity can all be taken the logarithm, recycle least square method to enter line function Fitting.Can obtain interval function corresponding to different electric current sections, the form of interval function can be linear equation such as：Y=ax+ B, in formula, y can represent conventional logging shallow resistivity electric imaging logging average current one, and x can represent that electric imaging logging is averaged Electric current one, a, b represent the coefficient of linear equation.

In the application one embodiment, can be obtained according to equation below (2) electric imaging logging average current one with it is right The coefficient of interval function between the conventional logging shallow resistivity answered, interval function include linear equation function, you can with basis What equation below (2) calculated the linear equation between electric imaging logging average current one and corresponding conventional logging shallow resistivity is Number：

In above formula, a, b can represent the coefficient of linear equation function；Sn can represent that electric imaging logging average current one exists The quantity of depth point in corresponding current section, what electric imaging logging average current one was located at electric current section can include multiple depths Degree point, such as：To calculating current section (I_s-1, I_s] corresponding to linear equation coefficient, electric imaging logging average current one In electric current section (I_s-1, I_s] depth point have 5500m, 5500.00254m, 5600m, 5600.00254m, then electric current section (I_s-1, I_s] in can include 4 depth points, sn=4；It can represent conventional corresponding to i-th of depth point in electric current section Well logging shallow resistivity；Electric imaging logging average current one corresponding to i-th of depth point in electric current section can be represented,Above-mentioned formula (1) can be utilized to obtain.Certainly, above-mentioned formula (2) is a kind of embodiment, can also be right as needed Formula (2) is deformed or converted, and the application is not especially limited.

Fig. 2 is that electric imaging logging average current one is illustrated with the fitting of conventional logging shallow resistivity in a kind of embodiment of the application Figure, as shown in Fig. 2 in the application one embodiment, by electric imaging logging average current one be divided into [0.2,1], (1,5], (5, 10], (10,35] four electric current sections.To the conventional logging shallow resistivity in each electric current section and the average electricity of electric imaging logging Stream one carries out double-log straight line least square fitting by formula (2), obtains interval function corresponding to 4 electric current sections.4 each areas Between function be combined obtain a piecewise function, i.e., between electric imaging logging average current one and conventional logging shallow resistivity Receptance function.For fitting result as shown in Fig. 2 being divided into 4 straightways, i.e., each electric current section corresponds to the section of a linear equation Function, 4 interval functions are combined into a piecewise function.

The electric imaging logging image scale method that the application provides, double-log straight line least square method can be utilized by difference Electric imaging logging average current one corresponding to electric current section and conventional logging shallow resistivity are fitted, and obtain each electric current section Corresponding interval function.Interval function is combined, whole well section electric imaging logging average current to be analyzed can be got Piecewise function between one and conventional logging shallow resistivity, i.e. electric imaging logging average current one and conventional logging shallow resistivity it Between receptance function.The application at utmost describes full well section routine shallow resistivity response and electric imaging logging with piecewise function Non-linear change tendencies between average current one, realize the response changing rule between electric imaging logging and conventional logging Accurately portray, provide accurate data basis for the follow-up electric imaging logging image scale that carries out, improve electric imaging logging map As the accuracy of scale.

In the application one embodiment, get between electric imaging logging average current one and conventional logging shallow resistivity Receptance function function after, according to the receptance function and electric imaging logging image got, can calculate in well section to be analyzed not With depth window average current two corresponding to depth window.Depth window average current two can be calculated by depth window, specifically can root Calculated according to equation below (3)：

In above formula, I_aver(depth) depth window average current two can be represented；n_jDepth in corresponding depth window can be represented The quantity of point；n_kThe pole plate number of electric imaging logging instrument can be represented；n_lThe button on electric imaging logging instrument pole plate can be represented Electrode number；I_image(j, k, l) can represent k-th of pole plate, l-th of the button electricity in corresponding depth window at j-th of depth point The current value of pole measurement；A (j, k, l), b (j, k, l) can represent k-th of pole plate in depth window at j-th of depth point, l The coefficient of receptance function corresponding to individual button electrode, can be specifically that the linear equation obtained is calculated using above-mentioned formula (2) Coefficient a, b.Certainly, above-mentioned formula (3) is a kind of embodiment, formula (3) can also be deformed or converted as needed, The application is not especially limited.

Such as：In the application one embodiment, if well section to be analyzed includes 100 depth windows, in each depth window It is corresponding with 50 depth points, i.e. n_j=50, each depth point can be corresponding with multiple pole plates and button electrode.According to actual need Will, obtain the pole plate number and button electrode number in electric imaging logging instrument, you can to obtain n_kAnd n_lValue.It is it is of course also possible to every The quantity of depth point in individual depth window is differed, and the application is not especially limited.Further according to electric imaging logging image, obtain each The current value that pole plate, button electrode corresponding at individual depth point are measured, you can to obtain I_imageThe value of (j, k, l).Can root According to the I of acquisition_imageThe value of (j, k, l), judge electric current section corresponding to depth point, can further be obtained using above-mentioned formula (2) Obtain the coefficient of linear equation corresponding to the electric current section, you can to obtain a (j, k, l), b (j, k, l) value.Further, it is possible to Depth window average current two corresponding to 100 depth windows is calculated using above-mentioned formula (3).

In a kind of embodiment that the application provides, after getting depth window average current two corresponding to each depth window, It can be calculated each according to the depth window average current two obtained and Conventional Logs such as conventional logging shallow resistivity value is calculated Calibration factor corresponding to depth window.Specifically calibration factor corresponding to each depth window can be calculated by following formula (4)：

C (depth)=1000/RS (depth)/I_aver(depth) (4)

In above formula, C (depth) can represent calibration factor corresponding to depth window；RS (depth) can represent corresponding depth Conventional logging shallow resistivity value, RS (depth) can be the conventional logging shallow resistivity value in depth intervals where depth window Average value, can be obtained by conventional shallow resistivity log；I_aver(depth) depth window corresponding to can representing is averaged Electric current two, it can be calculated and obtained by formula (3).Certainly, above-mentioned formula (4) is a kind of embodiment, can also be as needed Formula (4) is deformed or converted, the application is not especially limited.

In the application one embodiment, after obtaining calibration factor corresponding to each depth window, according to the quarter for calculating acquisition Spend coefficient and scale is carried out to electric imaging logging image, the depth point of scale can be specifically needed by following formula (5) calculating Current value after scale：

I_scaled(j, k, l)=C (depth) I_image(j,k,l) (5)

In above formula, I_scaled(j, k, l) can represent k-th of pole plate in corresponding depth window at j-th of depth point, l-th Current value after scale corresponding to button electrode；C (depth) can represent to need calibration factor corresponding to the depth window of scale, It can be calculated and obtained by above-mentioned formula (4)；I_image(j, k, l) can represent to need j-th of depth point in the depth window of scale K-th of pole plate at place, the current value of l-th of button electrode measurement.Certainly, above-mentioned formula (5) is a kind of embodiment, can be with Formula (5) is deformed or converted as needed, the application is not especially limited.

Such as：In the application one embodiment, electric imaging logging image can be divided into 100 depth windows, each 50 depth points are corresponding with depth window, each depth point can be corresponding with multiple pole plates and button electrode.Can be according to above-mentioned After formula (1), (2), (3), (4) calculate calibration factor corresponding to each depth window of acquisition, using above-mentioned formula (5) to Electrical imaging The depth point of each scale carries out scale in log picture.Such as：The 1st calibration factor corresponding to depth window is obtained, then obtains the 1st In individual depth window, the current value of the 1st the 1st, the pole plate button electrode measurement of depth point the 1st.By the current value of measurement and the 1st The product of calibration factor corresponding to individual depth window is as in the 1st depth window after scale, the 1st pole plate the 1st of depth point the 1st Current value corresponding to individual button electrode, complete the scale of the depth point.Electric imaging logging image can be carried out by the method Scale.

Fig. 3 is electric imaging logging image scale effect diagram in a kind of embodiment of the application, first in Fig. 3 IMAGE.OUT represents electric imaging logging image before scale, and second IMAGE.SCALED represents electric imaging logging image after scale, 3rd is electric imaging logging image resistivity and the conventional logging resistivity contrasts' schematic diagram calculated, and OHMM represents resistance in figure The unit of rate.Dark colour solid line is electric imaging logging image resistivity (the imaging logging electricity after scale after scale in 3rd figure Resistance rate), light colour solid line is conventional logging shallow resistivity.From figure 3, it can be seen that the electric imaging logging image after scale no matter It is in change in resistance trend or numerically to have good uniformity with conventional logging resistivity, so as to demonstrate this Shen Please technical scheme reliability.

The electric imaging logging image scale method that the application provides, puts down for conventional logging shallow resistivity with electric imaging logging The response characteristic of equal electric current one, it is proposed that segmentation automatic Matching Method, realize and both are responded with accurately portraying for changing rule, Laid a good foundation for follow-up scale.Meanwhile by obtaining the depth window average current two of electric imaging logging image, obtain different depths Calibration factor corresponding to spending window, carries out the point-by-point scale of different calibration factors, effectively increases electric imaging logging image scale Precision, improve the accuracy of electric imaging logging image scale.In addition, the application establishes a set of electric imaging logging image resistance Rate scale automatic calculating method and flow, it is possible to achieve computer automatically processes, and can be obviously improved the processing of well-log information Efficiency.

Based on user's web project data processing method described above, this specification one or more embodiment also provides A kind of web project data processing equipment.Described device can include the use of the system of this specification embodiment methods described (including distributed system), software (application), module, component, server, client etc. and the dress for combining necessary implementation hardware Put.Based on same innovation thinking, for example following implementation of device in one or more embodiments that this specification embodiment provides Described in example.It is similar to method to solve the implementation of problem due to device, therefore the reality of the specific device of this specification embodiment The implementation that may refer to preceding method is applied, part is repeated and repeats no more.Used below, term " unit " or " module " can To realize the combination of the software of predetermined function and/or hardware.Although the device described by following examples is preferably come with software Realize, but hardware, or the realization of the combination of software and hardware is also what may and be contemplated.

Specifically, Fig. 4 is that a kind of modular structure of embodiment of electric imaging logging image graduation apparatus that the application provides is shown It is intended to, as shown in figure 4, electric imaging logging image graduation apparatus provided herein includes：Log is as generation module 41, flat The equal computing module 42 of electric current one, receptance function acquisition module 43, the computing module 44 of average current two, calibration factor computing module 45th, image calibration block 46.

Log can be used for the electric imaging logging data for gathering well section to be analyzed, according to the electricity as generation module 41 Image Logging Data obtains electric imaging logging image.

The computing module 42 of average current one, it can be used for calculating the well section to be analyzed according to the electric imaging logging image Electric imaging logging average current one corresponding to middle different depth point.

Receptance function acquisition module 43, it can be used for according to the electric imaging logging average current one and obtain in advance normal Well-log information is advised, builds the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity.

The computing module 44 of average current two, it can be used for according to the receptance function and the electric imaging logging image, meter Calculate depth window average current two corresponding to different depth window in the well section to be analyzed.

Calibration factor computing module 45, it can be used for according to the depth window average current two and conventional logging money Material, calculate calibration factor corresponding to different depth window.

Image calibration block 46, it can be used for carrying out scale to the electric imaging logging image according to the calibration factor.

The electric imaging logging image graduation apparatus that the application provides, according to the electric imaging logging data and routine collected Well-log information, the receptance function between electric imaging logging average current one and conventional logging shallow resistivity is got, and further The depth window average current two according to corresponding to the receptance function got obtains different depth window, according to depth window average current two Calibration factor corresponding to different depth window is obtained, the scale of electric imaging logging image is finally completed according to calibration factor.Realize Electric imaging logging average current one is portrayed with the accurate of conventional logging change in resistance rule, further increases electric imaging logging The accuracy of image scale..

In a kind of embodiment that the application provides, the receptance function acquisition module is specifically used for：

The electric imaging logging image graduation apparatus that the application provides, multiple electricity are divided into by electric imaging logging average current one Section is flowed, obtains the section between electric imaging logging average current one and conventional logging shallow resistivity corresponding to different electric current sections Function, interval function corresponding to different electric current sections is combined, forms a piecewise function, that is, it is whole to obtain well section to be analyzed Receptance function corresponding to individual well section between electric imaging logging average current one and conventional logging shallow resistivity.For conventional shallow electricity Resistance rate and the response characteristic of electric imaging logging average current one, it is proposed that segmentation automatic Matching Method, realize and both are responded The accurate of changing rule is portrayed, and is laid a good foundation for follow-up scale.

In a kind of embodiment that the application provides, the Function Fitting in the receptance function acquisition module includes： Double-log straight line least square fitting.

In a kind of embodiment that the application provides, the interval function includes linear equation function,

Correspondingly, the receptance function acquisition module is specifically used for basisCalculate the straight line The coefficient of equation functions；

The electric imaging logging image graduation apparatus that the application provides, will not using double-log straight line least square fitting method It is fitted with electric imaging logging average current one corresponding to electric current section and conventional logging shallow resistivity, obtains each Current Zone Between corresponding interval function.Interval function is combined, the average electricity of whole well section electric imaging logging to be analyzed can be got Piecewise function between stream one and conventional logging shallow resistivity, i.e. electric imaging logging average current one and conventional logging shallow resistivity Between receptance function.The application is at utmost described full well section routine shallow resistivity response with piecewise function and surveyed with Electrical imaging Non-linear change tendencies between well average current one, realize the response changing rule between electric imaging logging and conventional logging It is accurate portray, provide accurate data basis for follow-up progress electric imaging logging image scale, improve electric imaging logging The accuracy of image scale.

In a kind of embodiment that the application provides, the computing module of average current two is specifically used for：

The electric imaging logging image graduation apparatus that the application provides, according to section letter corresponding to the different electric current sections of acquisition Number, the calculating by depth window is further carried out, carried out according to the response coefficient of interval function corresponding to different electric current sections higher The calculating of precision, depth window average current two corresponding to different depth window is obtained, reduce existing point-by-point scale method using permanent The error that certainty ratio relation is brought.

In a kind of embodiment that the application provides, the calibration factor computing module is specifically used for：

In a kind of embodiment that the application provides, described image scale unit is specifically used for：

The electric imaging logging image graduation apparatus that the application provides, according to depth window average current corresponding to different depth window Two, further calibration factor corresponding to acquisition different depth window, carries out the point-by-point scale of different calibration factors, effectively increases electricity The precision of imaging logging image scale, improve the accuracy of electric imaging logging image scale.

In a kind of embodiment that the application provides, the computing module of average current one is specifically used for：According to the electricity Imaging logging image, utilizeThe electric imaging logging image is calculated to calculate Electric imaging logging average current one corresponding to different depth point in the well section to be analyzed；

The electric imaging logging image graduation apparatus that the application provides, different depth point pair is calculated according to electric imaging logging image The electric imaging logging average current one answered, and it is special for the response of conventional logging shallow resistivity and electric imaging logging average current one Sign, it is proposed that segmentation automatic Matching Method, realize and both are responded with accurately portraying for changing rule, established for follow-up scale Basis.Meanwhile it can obtain and carved corresponding to different depth window by obtaining the depth window average current two of electric imaging logging image Coefficient is spent, the point-by-point scale of different calibration factors is carried out, effectively increases the precision of electric imaging logging image scale, improve electricity The accuracy of imaging logging image scale.Counted automatically in addition, the application establishes a set of electric imaging logging image resistivity scale Calculation method and flow, it is possible to achieve computer automatically processes, and can be obviously improved the treatment effeciency of well-log information.

Need what is illustrated, device described above can also include other embodiment party according to the description of embodiment of the method Formula, concrete implementation mode are referred to the description of related method embodiment, not repeated one by one herein.

It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims It is interior.In some cases, the action recorded in detail in the claims or step can be come according to different from the order in embodiment Perform and still can realize desired result.In addition, the process described in the accompanying drawings not necessarily require show it is specific suitable Sequence or consecutive order could realize desired result.In some embodiments, multitasking and parallel processing be also can With or be probably favourable.

The processing method or device for the above-mentioned guarantee data consistency that this specification embodiment provides can be in a computer Realized by the corresponding programmed instruction of computing device, such as realized using the c++ language of windows operating systems at PC ends, Linux system is realized, or other are for example realized using android, iOS system programming language in intelligent terminal, Yi Jiji In processing logic realization of quantum computer etc..A kind of another kind for electric imaging logging image graduation apparatus that this specification provides In embodiment, Fig. 5 is the modular structure schematic diagram for another electric imaging logging image graduation apparatus embodiment that the application provides, As shown in figure 5, the electric imaging logging image graduation apparatus that another embodiment of the application provides can include processor 51 and use In storage processor-executable instruction memory 52,

Processor 51 and memory 52 complete mutual communication by bus 53；

The processor 51 is used to call the programmed instruction in the memory 52, to perform above-mentioned each electric imaging logging map As the method that scale method embodiment is provided, such as including：The electric imaging logging data of well section to be analyzed is gathered, according to described Electric imaging logging data obtains electric imaging logging image；Calculated according to the electric imaging logging image in the well section to be analyzed not With electric imaging logging average current one corresponding to depth point；Obtain according to the electric imaging logging average current one and in advance normal Well-log information is advised, builds the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity；According to The receptance function and the electric imaging logging image, calculate depth window corresponding to different depth window in the well section to be analyzed and put down Equal electric current two；According to the depth window average current two and the Conventional Logs, scale corresponding to different depth window is calculated Coefficient；Scale is carried out to the electric imaging logging image according to the calibration factor.

It should be noted that specification device described above or electronic equipment according to the description of related method embodiment also Other embodiments can be included, concrete implementation mode is referred to the description of embodiment of the method, do not gone to live in the household of one's in-laws on getting married one by one herein State.Each embodiment in the application is described by the way of progressive, and identical similar part is mutual between each embodiment Referring to what each embodiment stressed is the difference with other embodiment.Especially for hardware+program class For embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is implemented referring to method The part explanation of example.

This specification embodiment is not limited to meet industry communication standard, standard computer data processing sum According to the situation described by storage rule or this specification one or more embodiment.The right way of conduct is made in some professional standards or use by oneself In formula or the practice processes of embodiment description embodiment amended slightly can also realize above-described embodiment it is identical, it is equivalent or The implementation result being anticipated that after close or deformation.Using the data acquisition after these modifications or deformation, storage, judgement, processing side The embodiment of the acquisitions such as formula, still it may belong within the scope of the optional embodiment of this specification embodiment.

In the 1990s, the improvement for a technology can clearly distinguish be on hardware improvement (for example, Improvement to circuit structures such as diode, transistor, switches) or software on improvement (improvement for method flow).So And as the development of technology, the improvement of current many method flows can be considered as directly improving for hardware circuit. Designer nearly all obtains corresponding hardware circuit by the way that improved method flow is programmed into hardware circuit.Cause This, it cannot be said that the improvement of a method flow cannot be realized with hardware entities module.For example, PLD (Programmable Logic Device, PLD) (such as field programmable gate array (Field Programmable Gate Array, FPGA)) it is exactly such a integrated circuit, its logic function is determined by user to device programming.By designer Voluntarily programming comes a digital display circuit " integrated " on a piece of PLD, without asking chip maker to design and make Special IC chip.Moreover, nowadays, substitution manually makes IC chip, this programming is also used instead mostly " patrols Volume compiler (logic compiler) " software realizes that software compiler used is similar when it writes with program development, And the source code before compiling also write by handy specific programming language, this is referred to as hardware description language (Hardware Description Language, HDL), and HDL is also not only a kind of, but have many kinds, such as ABEL (Advanced Boolean Expression Language)、AHDL(Altera Hardware Description Language)、Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL (Java Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby Hardware Description Language) etc., VHDL (Very-High-Speed are most generally used at present Integrated Circuit Hardware Description Language) and Verilog.Those skilled in the art also should This understands, it is only necessary to method flow slightly programming in logic and is programmed into integrated circuit with above-mentioned several hardware description languages, Can is readily available the hardware circuit for realizing the logical method flow.

Controller can be implemented in any suitable manner, for example, controller can take such as microprocessor or processing Device and storage can by the computer of the computer readable program code (such as software or firmware) of (micro-) computing device Read medium, gate, switch, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), the form of programmable logic controller (PLC) and embedded microcontroller, the example of controller include but is not limited to following microcontroller Device：ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320, are deposited Memory controller is also implemented as a part for the control logic of memory.It is also known in the art that except with Pure computer readable program code mode realized beyond controller, completely can be by the way that method and step is carried out into programming in logic to make Controller is obtained in the form of gate, switch, application specific integrated circuit, programmable logic controller (PLC) and embedded microcontroller etc. to come in fact Existing identical function.Therefore this controller is considered a kind of hardware component, and various for realizing to including in it The device of function can also be considered as the structure in hardware component.Or even, can be by for realizing that the device of various functions regards For that not only can be the software module of implementation method but also can be the structure in hardware component.

System, device, module or the unit that above-described embodiment illustrates, it can specifically be realized by computer chip or entity, Or realized by the product with certain function.One kind typically realizes that equipment is computer.Specifically, computer for example may be used Think personal computer, laptop computer, vehicle-mounted human-computer interaction device, cell phone, camera phone, smart phone, individual Digital assistants, media player, navigation equipment, electronic mail equipment, game console, tablet PC, wearable device or The combination of any equipment in these equipment of person.

Although this specification one or more embodiment provides the method operating procedure as described in embodiment or flow chart, But more or less operating procedures can be included based on the conventional means either without creativeness.The step of being enumerated in embodiment Order is only a kind of mode in numerous step execution sequences, does not represent unique execution sequence.Device in practice or When end product performs, can according to embodiment either method shown in the drawings order perform or it is parallel perform it is (such as parallel The environment of processor or multiple threads, even distributed data processing environment).Term " comprising ", "comprising" or its Any other variant is intended to including for nonexcludability so that process, method, product including a series of elements or Equipment not only includes those key elements, but also the other element including being not expressly set out, or also include for this process, Method, product or the intrinsic key element of equipment.In the absence of more restrictions, it is not precluded from including the key element Other identical or equivalent elements in process, method, product or equipment also be present.The first, the second grade word is used for representing name Claim, and be not offered as any specific order.

For convenience of description, it is divided into various modules during description apparatus above with function to describe respectively.Certainly, this is being implemented The function of each module can be realized in same or multiple softwares and/or hardware during specification one or more, can also The module for realizing same function is realized by the combination of multiple submodule or subelement etc..Device embodiment described above is only It is only illustrative, for example, the division of the unit, only a kind of division of logic function, can have in addition when actually realizing Dividing mode, such as multiple units or component can combine or be desirably integrated into another system, or some features can be with Ignore, or do not perform.Another, shown or discussed mutual coupling or direct-coupling or communication connection can be logical Some interfaces are crossed, the INDIRECT COUPLING or communication connection of device or unit, can be electrical, mechanical or other forms.

The present invention is the flow with reference to method, apparatus (system) and computer program product according to embodiments of the present invention Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.

These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.

In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net Network interface and internal memory.

Internal memory may include computer-readable medium in volatile memory, random access memory (RAM) and/or The forms such as Nonvolatile memory, such as read-only storage (ROM) or flash memory (flash RAM).Internal memory is computer-readable medium Example.

Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method Or technology come realize information store.Information can be computer-readable instruction, data structure, the module of program or other data. The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moved State random access memory (DRAM), other kinds of random access memory (RAM), read-only storage (ROM), electric erasable Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage (CD-ROM), Digital versatile disc (DVD) or other optical storages, magnetic cassette tape, the storage of tape magnetic rigid disk, graphene stores or other Magnetic storage apparatus or any other non-transmission medium, the information that can be accessed by a computing device available for storage.According to herein In define, computer-readable medium does not include the data of temporary computer readable media (transitory media), such as modulation Signal and carrier wave.

It will be understood by those skilled in the art that this specification one or more embodiment can be provided as method, system or calculating Machine program product.Therefore, this specification one or more embodiment can use complete hardware embodiment, complete software embodiment or With reference to the form of the embodiment in terms of software and hardware.Moreover, this specification one or more embodiment can use at one or It is multiple wherein include computer usable program code computer-usable storage medium (include but is not limited to magnetic disk storage, CD-ROM, optical memory etc.) on the form of computer program product implemented.

This specification one or more embodiment can computer executable instructions it is general on Described in hereafter, such as program module.Usually, program module includes performing particular task or realizes particular abstract data type Routine, program, object, component, data structure etc..This this specification one can also be put into practice in a distributed computing environment Or multiple embodiments, in these DCEs, by being held by communication network and connected remote processing devices Row task.In a distributed computing environment, program module can be located at the local and remote computer including storage device In storage medium.

Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for system For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method Part explanation.In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", The description of " specific example " or " some examples " etc. means to combine specific features, structure, material that the embodiment or example describe Or feature is contained at least one embodiment or example of this specification.In this manual, to the signal of above-mentioned term Property statement be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description It can be combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this The technical staff in field can be by the different embodiments or example described in this specification and the spy of different embodiments or example Sign is combined and combined.

The embodiment of this specification one or more embodiment is the foregoing is only, is not limited to book explanation Book one or more embodiment.To those skilled in the art, this specification one or more embodiment can have various Change and change.All any modification, equivalent substitution and improvements made within spirit herein and principle etc., all should be included Within right.

Claims

1. a kind of electric imaging logging image scale method, it is characterised in that methods described includes：

The electric imaging logging data of well section to be analyzed is gathered, electric imaging logging image is obtained according to the electric imaging logging data；

The electric imaging logging according to corresponding to the electric imaging logging image calculates different depth point in the well section to be analyzed is averaged Electric current one；

According to the electric imaging logging average current one and the Conventional Logs obtained in advance, build the electric imaging logging and put down Receptance function between electric current one and conventional logging shallow resistivity；

According to the receptance function and the electric imaging logging image, calculate in the well section to be analyzed corresponding to different depth window Depth window average current two；

According to the depth window average current two and the Conventional Logs, calibration factor corresponding to different depth window is calculated；

A kind of 2. electric imaging logging image scale method as claimed in claim 1, it is characterised in that it is described according to the electricity into As well logging average current one and the Conventional Logs obtained in advance, build the electric imaging logging average current one and surveyed with conventional Receptance function between well shallow resistivity, including：

By the shallow resistance of conventional logging corresponding to the electric imaging logging average current one in the electric current section and the electric current section Rate carries out Function Fitting, obtains interval function corresponding to the different electric current sections；

According to the interval function, the segmentation between the electric imaging logging average current one and conventional logging shallow resistivity is built Function, using the piecewise function as the receptance function.

A kind of 3. electric imaging logging image scale method as claimed in claim 2, it is characterised in that the Function Fitting bag Include：Double-log straight line least square fitting.

4. a kind of electric imaging logging image scale method as claimed in claim 3, it is characterised in that the interval function includes Linear equation function, according to Calculate the coefficient of the linear equation function；

In above formula, a, b represent the coefficient of the linear equation function；Sn represents the electric imaging logging average current one described The quantity of depth point in electric current section；Represent conventional logging shallow resistivity corresponding to i-th of depth point；Represent Electric imaging logging average current one corresponding to i-th of depth point.

5. a kind of electric imaging logging image scale method as claimed in claim 4, it is characterised in that described according to the response Function and the electric imaging logging image, calculate the depth window average current two of different depth window in the well section to be analyzed, bag Include：

According to

Calculate depth window average current two corresponding to different depth window in the well section to be analyzed；

In above formula, I_aver(depth) the depth window average current two is represented；n_jRepresent the quantity of depth point in the depth window； n_kRepresent the pole plate number of electric imaging logging instrument；n_lRepresent the button electrode number on the electric imaging logging instrument pole plate； I_image(j, k, l) represents k-th of pole plate, the electric current of l-th of button electrode measurement in the depth window at j-th of depth point Value；A (j, k, l), b (j, k, l) represent k-th of pole plate, l-th of the button electrode pair in the depth window at j-th of depth point The coefficient for the receptance function answered.

6. a kind of electric imaging logging image scale method as claimed in claim 1, it is characterised in that described according to the depth Window average current two and the Conventional Logs, calibration factor corresponding to the depth window is calculated, including：

In above formula, C (depth) represents calibration factor corresponding to the depth window；RS (depth) represents the conventional survey of corresponding depth Well shallow resistivity value；I_aver(depth) the depth window average current two is represented.

7. a kind of electric imaging logging image scale method as claimed in claim 1, it is characterised in that described according to the scale Coefficient carries out scale to the electric imaging logging image, including：

According to I_scaled(j, k, l)=C (depth) I_image(j, k, l) is carried out to the electric imaging logging image in different depth window Scale；

In above formula, I_scaled(j, k, l) represents k-th of pole plate, l-th of the button electrode in the depth window at j-th of depth point Current value after corresponding scale；C (depth) represents calibration factor corresponding to the depth window；I_imageDescribed in (j, k, l) is represented K-th of pole plate, the current value of l-th of button electrode measurement in depth window at j-th of depth point.

A kind of 8. electric imaging logging image scale method as claimed in claim 1, it is characterised in that it is described according to the electricity into As log as corresponding to calculating different depth point in the well section to be analyzed electric imaging logging average current one, including：

According to the electric imaging logging image, utilizeCalculate it is described electricity into As log as corresponding to calculating different depth point in the well section to be analyzed electric imaging logging average current one；

In above formula,Represent the electric imaging logging average current one of depth point s opening positions；n_kRepresent electric imaging logging instrument Pole plate number；n_lRepresent the pole plate upper button electrode number of electric imaging logging instrument；I_image(s, k, l) represents the depth point s positions Put k-th of pole plate, the current value of l-th of button electrode measurement at place.

9. a kind of electric imaging logging image graduation apparatus, it is characterised in that described device includes：

Log, for gathering the electric imaging logging data of well section to be analyzed, provides as generation module according to the electric imaging logging Material obtains electric imaging logging image；

The computing module of average current one, for calculating different depth in the well section to be analyzed according to the electric imaging logging image Electric imaging logging average current one corresponding to point；

Receptance function acquisition module, for according to the electric imaging logging average current one and the conventional logging obtained in advance money Material, builds the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity；

The computing module of average current two, for according to the receptance function and the electric imaging logging image, being treated described in calculating point Analyse depth window average current two corresponding to different depth window in well section；

Calibration factor computing module, for according to the depth window average current two and the Conventional Logs, calculating different Calibration factor corresponding to depth window；

10. a kind of electric imaging logging image graduation apparatus as claimed in claim 9, it is characterised in that the receptance function obtains Modulus block is specifically used for：

11. a kind of electric imaging logging image graduation apparatus as claimed in claim 10, it is characterised in that the receptance function obtains The Function Fitting in modulus block includes：Double-log straight line least square fitting.

A kind of 12. electric imaging logging image graduation apparatus as claimed in claim 11, it is characterised in that the interval function bag Linear equation function is included, correspondingly, the receptance function acquisition module is specifically used for basisCalculate the linear equation letter Several coefficients；

In above formula, a, b represent the coefficient of the linear equation function；Sn represents the average current in the electric current section The quantity of depth point；Represent conventional logging shallow resistivity corresponding to i-th of depth point；Represent i-th of depth point pair The electric imaging logging average current one answered.

A kind of 13. electric imaging logging image graduation apparatus as claimed in claim 12, it is characterised in that the average current two Computing module is specifically used for：

In above formula, I_aver(depth) the depth window average current two is represented；n_jRepresent the quantity of depth point in the depth window； n_kRepresent the pole plate number of electric imaging logging instrument；n_lRepresent the button electrode number on the electric imaging logging instrument pole plate； I_image(j, k, l) represents k-th of pole plate, the electric current of l-th of button electrode measurement in the depth window at j-th of depth point Value；A (j, k, l), b (j, k, l) represent k-th of pole plate, l-th of the button electrode pair in the depth window at j-th of depth point The coefficient for the linear equation function answered.

A kind of 14. electric imaging logging image graduation apparatus as claimed in claim 9, it is characterised in that the calibration factor meter Module is calculated to be specifically used for：

A kind of 15. electric imaging logging image graduation apparatus as claimed in claim 9, it is characterised in that described image scale list Member is specifically used for：

A kind of 16. electric imaging logging image graduation apparatus as claimed in claim 9, it is characterised in that the average current one Computing module is specifically used for：According to the electric imaging logging image, utilize Calculate the electric imaging logging image and calculate electric imaging logging average current corresponding to different depth point in the well section to be analyzed One；

In above formula,Represent the electric imaging logging average current one of depth point s opening positions；n_kRepresent electric imaging logging instrument Pole plate number；n_lRepresent the pole plate upper button electrode number of electric imaging logging instrument；I_image(s, k, l) represents depth point s opening positions K-th of pole plate, the current value of l-th button electrode measurement.

17. a kind of electric imaging logging image graduation apparatus, it is characterised in that can be held including processor and for storing processor The memory of row instruction, realized described in the computing device during instruction such as any one methods described in claim 1 to 8 Step.