CN203531883U - Well logging equipment - Google Patents
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- CN203531883U CN203531883U CN201320617395.0U CN201320617395U CN203531883U CN 203531883 U CN203531883 U CN 203531883U CN 201320617395 U CN201320617395 U CN 201320617395U CN 203531883 U CN203531883 U CN 203531883U
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Abstract
The utility model discloses well logging equipment. The well logging equipment comprises a coil sensing device, an electrode well logging device and a processor, wherein the coil sensing device is used for detecting specific conductance signals of strata, the electrode well logging device is used for obtaining specific resistance signals of the strata, and the processor is connected between the coil sensing device and the electrode well logging device and is used for obtaining stratum characteristic data of the detected strata according to the specific conductance signals and the specific resistance signals. The well logging equipment solves the technical problem that the accuracy of measurement on thin strata and thin interbed strata is low, and thus the effect that stratum characteristic curves of the thin strata and the thin interbed strata are accurately obtained is achieved.
Description
Technical field
The utility model relates to oil reservoir logging field, in particular to a kind of logging equipment.
Background technology
Along with deepening continuously of In Oil Field Exploration And Development degree, thin layer and thin interbed have become the reservoir of oil and gas that expectation is developed, because conventional two measurement of inductance curves are only applicable to oil-base mud well logging condition and resolution ratio is low, curve response message is few, use conventional multi-coil induction installation to measure the resolution ratio of the formation apparent resistivity curve that stratum obtains low, cannot well react reservoir response characteristic.Multi-electrode apparatus measures device is only applicable in salt-water mud, but curve resolution rate is low, and investigation depth is shallow, can only reflect nearly well survey information.Traditional array induction logging is in salt-water mud, wellbore effect is larger, pair array is responded to nearly subarray well logging result precision and is brought impact, affects the long array measurement precision of array induction, so the application conditions of array induction has certain limitation in high resistant stratum array induction measurement result.
For the above-mentioned problem low to the stratum measurement accuracy of thin layer and thin interbed, effective solution is not yet proposed at present.
Utility model content
The utility model embodiment provides a kind of logging equipment, at least to solve the technical problem low to the stratum measurement accuracy of thin layer and thin interbed.
According to the utility model embodiment aspect, a kind of logging equipment is provided, comprising: inductive devices, for obtaining the conductivity signal of surveying stratum; Electrode well logging apparatus, for obtaining the resistivity signal of surveying stratum; Processor, is connected between inductive devices and electrode well logging apparatus, for survey the formation characteristics data on stratum according to conductivity signal and resistivity signal acquisition.
Further, logging equipment also comprises: Acquisition Circuit, and inductive devices is connected with processor by Acquisition Circuit respectively with electrode well logging apparatus, and Acquisition Circuit is for being sent to processor by the conductivity signal collecting and resistivity signal.
Further, inductive devices comprises: transmitting coil, for emission detection signal; Receiving system, is connected between transmitting coil and Acquisition Circuit, and receiving system comprises a plurality of receiving coils, and each receiving coil is respectively used to receive the conductivity signal of surveying the formation of bed response detectable signal.
Further, inductive devices also comprises: compensation arrangement, receiving system is connected with Acquisition Circuit by compensation arrangement, compensation arrangement comprises a plurality of bucking coils, the respectively corresponding receiving coil setting of each bucking coil, each bucking coil is for the directly coupling signal of the conductivity signal eliminating corresponding receiving coil and receive.
Further, inductive devices also comprises: the first housing, transmitting coil, compensation arrangement and receiving system are successively set in the first housing.
Further, inductive devices also comprises: the first housing, and transmitting coil, compensation arrangement and receiving system are arranged in the first housing, and the bucking coil in compensation arrangement and the receiving coil cross arrangement in receiving system are arranged in the first housing.
Further, electrode well logging apparatus comprises: emission electrode, for emission detection electric current; Measurement electrode group, comprises a plurality of measurement electrode, and each measurement electrode is respectively used to receive the feedback signal of surveying the formation of bed response probe current; Measuring circuit, connects with each measurement electrode respectively, and measuring circuit is for measuring the potential difference of the feedback signal between adjacent two measurement electrode; Collecting electrode, is connected between measuring circuit and Acquisition Circuit, the potential difference of measuring for receiving measuring circuit, and potential difference is sent to Acquisition Circuit as resistivity signal.
Further, electrode well logging apparatus also comprises: the second housing, emission electrode, measurement electrode and collecting electrode are successively set in the second housing.
Further, processor comprises: index correction instrument, be connected with Acquisition Circuit, and for conductivity signal and resistivity signal being carried out to scale, process and obtain electrical conductivity curve and resistivity curve; Inversion Calculation device, is connected with index correction instrument, for electrical conductivity curve and resistivity curve are carried out to Inversion Calculation, obtains formation resistivity section; Just drilling calculator, be connected with Inversion Calculation device, for formation resistivity section just being drilled calculate, just drilling resistivity curve and just drilling electrical conductivity curve; Make poor device, and just drill calculator and be connected, for calculating, just drill the first difference of resistivity curve and resistivity curve and just drilling electrical conductivity curve and the second difference of electrical conductivity curve; Comparator, and just drills calculator and is connected, for determining the first array response curve and the second array response curve according to the first difference and the second difference; Stratigraphic Curves calculator, is connected with comparator, for using the first array response curve, the second array response curve and formation resistivity section to carry out synthetic focusing processing, obtains formation characteristics data.
In the utility model embodiment, utilize inductive devices and electrode well logging apparatus to measure bed response (comprising conductivity signal and resistivity signal), then by processor, the bed response measuring is synthesized to processing, obtain surveying the different investigation depths on stratum, the formation characteristics data under different resolution.Inductive devices can accurately be measured the stratum characteristic of fresh water mud, electrode well logging apparatus can be measured the stratum characteristic of salt-water mud exactly, the synthetic formation characteristics data of surveying stratum of obtaining of signal that two well logging apparatus measured by processor, improved the accuracy to thin layer and the detection of thin interbed stratum characteristic, realize high precision and obtained the effect of the formation characteristics curve of thin layer and thin interbed, and then solved the technical problem low to the stratum measurement accuracy of thin layer and thin interbed.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is according to the structural representation of the logging equipment of the utility model embodiment;
Fig. 2 is according to the schematic diagram of the inductive devices of the utility model embodiment;
Fig. 3 is according to the schematic diagram of the inductive devices of another embodiment of the utility model;
Fig. 4 is according to the schematic diagram of the electrode well logging apparatus of the utility model embodiment;
Fig. 5 is according to the flow chart of the logging method of the utility model embodiment;
Fig. 6 is according to the flow chart of the logging method of another embodiment of the utility model; And
Fig. 7 is according to the schematic diagram of the well logging apparatus of the utility model embodiment.
The specific embodiment
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, the term " first " in manual of the present utility model and claims and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, and needn't be for describing specific order or precedence.The data that should be appreciated that such use suitably can exchanged in situation, so as embodiment of the present utility model described herein can with except diagram here or describe those order enforcement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, those steps or unit that the process that has comprised series of steps or unit, method, system, product or equipment are not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
Fig. 1 is according to the structural representation of the logging equipment of the utility model embodiment.As shown in Figure 1, this logging equipment can comprise: inductive devices 10, for obtaining the conductivity signal of surveying stratum; Electrode well logging apparatus 30, for obtaining the resistivity signal of surveying stratum; Processor 50, is connected between inductive devices and electrode well logging apparatus, for survey the formation characteristics data on stratum according to conductivity signal and resistivity signal acquisition.
Adopt above-described embodiment of the present utility model, utilize inductive devices and electrode well logging apparatus to measure bed response (comprising conductivity signal and resistivity signal), then by processor, the bed response measuring is synthesized to processing, obtain surveying the different investigation depths on stratum, the formation characteristics data under different resolution.Inductive devices can accurately be measured the stratum characteristic of fresh water mud, electrode well logging apparatus can be measured the stratum characteristic of salt-water mud exactly, the synthetic formation characteristics data of surveying stratum of obtaining of signal that two well logging apparatus measured by processor, solved technical problem to the stratum measurement accuracy of thin layer and thin interbed low in prior art, improve the accuracy that thin layer and thin interbed stratum characteristic are detected, realized high precision and obtain the effect of the formation characteristics curve of thin layer and thin interbed.
Particularly, by above-described embodiment of the present utility model, can effectively widen the range of application that existing multi-coil is induction instrument aratus, and use above-described embodiment of the present utility model, even in the situation that a or two coil array certainty of measurement surpasses measurement range, the synthetic focusing effect of processor still can reach well layer resistivity response characteristic corresponsively, the stratum that this device can Measurement accuracy 0.2 ohm-meter-1000 ohm-meter.
In above-described embodiment of the present utility model, logging equipment can also comprise: Acquisition Circuit, inductive devices is connected with processor by Acquisition Circuit respectively with electrode well logging apparatus, and Acquisition Circuit is for being sent to processor by the conductivity signal collecting and resistivity signal.
Inductive devices 10 in above-described embodiment can be the inductive devices of four subarrays or five subarrays, utilize the inductive devices 10 of four array signals or five arrays to measure the conductivity signal of surveying stratum, utilize multielectrode electrode well logging apparatus to measure the resistivity signal of surveying stratum, then by Acquisition Circuit, gather above-mentioned signal, above-mentioned signal is carried out to scale processing and obtain conductivity signal and resistivity signal, and conductivity signal and resistivity signal are sent to processor.Processor 50 is surveyed the stratum characteristic data on stratum according to conductivity signal and resistivity signal acquisition, these stratum characteristic data can comprise that array induction curve and array side are to curve.
In above-described embodiment of the present utility model, inductive devices 10 can comprise: transmitting coil, for emission detection signal; Receiving system, is connected between transmitting coil and Acquisition Circuit, and receiving system comprises a plurality of receiving coils, and each receiving coil is respectively used to receive the conductivity signal of surveying the formation of bed response detectable signal.Preferably, receiving coil can be 4 or 5.
Particularly, inductive devices 10 can also comprise: compensation arrangement, receiving system is connected with Acquisition Circuit by compensation arrangement, compensation arrangement comprises a plurality of bucking coils, the respectively corresponding receiving coil setting of each bucking coil, each bucking coil is for the directly coupling signal of the conductivity signal eliminating corresponding receiving coil and receive.
According to above-described embodiment of the present utility model, inductive devices 10 can also comprise: the first housing, and transmitting coil, compensation arrangement and receiving system are successively set in the first housing; Or the bucking coil in compensation arrangement and the receiving coil cross arrangement in receiving system are arranged in the first housing.
Fig. 2 and Fig. 3 show respectively the inductive devices of four subarrays and five subarrays.As shown in Figure 2, the inductive devices 10 of four subarrays can comprise a transmitting coil, 4 receiving coils and 4 bucking coils, and wherein, T is transmitting coil, R1, R2, R3, R4 are receiving coil, and B1, B2, B3, B4 are bucking coil (also can be referred to as shielded coil).As shown in the figure, each receiving coil is positioned at the diverse location of the first housing, and in the embodiment shown in Fig. 2, transmitting coil, compensation arrangement and receiving system are successively set in the first housing.More specifically, T, B1 and R1 are one group of receiving coil system, the bucking coil that transmitting coil is identical with other subscripts and receiving coil are respectively one group of receiving coil system, bucking coil B1(B2, B3 wherein, B4) play and eliminate R1(R2, R3, R4) in directly coupling signal.In changing embodiment, on transmitting coil T, a logical alternating current receives formation signal on receiving coil R1, R2, R3, R4, obtains formation conductivity signal.
The inductive devices 10 of five subarrays as shown in Figure 3 can comprise a transmitting coil T, 5 receiving coils and 5 bucking coils, and as shown in Figure 3, each receiving coil is positioned at the diverse location of the first housing.Wherein, T is transmitting coil, and B1, B2, B3, B4, B5 are bucking coil (shielded coil), and R1, R2, R3, R4, R5 are receiving coil.Particularly, the upper logical alternating current of transmitting coil T is launched, and receives and surveys responsively layer signal of body layer, and then obtain conductivity signal at receiving coil R1, R2, R3, R4, R5.
In above-described embodiment of the present utility model, logging equipment can also comprise: Acquisition Circuit, inductive devices is connected with processor by Acquisition Circuit respectively with electrode well logging apparatus, and Acquisition Circuit is for being sent to processor by the conductivity signal collecting and resistivity signal.
Particularly, inductive devices 10 and electrode well logging apparatus 30 are transferred in the wellhole of oil by logging cable, numerical control ground is inductive devices 10 and 30 power supplies of electrode well logging apparatus, inductive devices 10 and electrode well logging apparatus 30 are pulled by cable, measure conductivity signal and the resistivity signal of different well locations in putting.
In above-described embodiment of the present utility model, electrode well logging apparatus 30 can comprise: emission electrode, for emission detection electric current; Measurement electrode group, comprises a plurality of measurement electrode, and each measurement electrode is respectively used to receive the feedback signal of surveying the formation of bed response probe current; Measuring circuit, connects with each measurement electrode respectively, and measuring circuit is for measuring the potential difference of the feedback signal between adjacent two measurement electrode; Collecting electrode, is connected between measuring circuit and Acquisition Circuit, the potential difference of measuring for receiving measuring circuit, and potential difference is sent to Acquisition Circuit as resistivity signal.
Particularly, electrode well logging apparatus 30 can also comprise: the second housing, emission electrode, measurement electrode and collecting electrode are successively set in the second housing.
As shown in Figure 4, electrode well logging apparatus 30 can comprise an emission electrode and loop electrode B and 5 measurement electrode (i.e. M1 shown in figure, M2, M3, M4 and M5), wherein, T emission current (being current electrode), loop is B(collecting electrode), by measuring circuit, measure M1, potential difference between M2, measure M2, potential difference between M3, measure M4, potential difference between M5, and metrical information (being the potential difference in above-described embodiment) is sent to processor 50(by remote measurement pipe nipple is ground numerical control software), by processor 50(, can be also software on ground in the present embodiment) process and to obtain formation resistivity rate curve.Wherein, 5 measurement electrode in above-described embodiment can form measurement electrode group.
Particularly, processor 50 can comprise: index correction instrument, be connected with Acquisition Circuit, and for conductivity signal and resistivity signal being carried out to scale, process and obtain electrical conductivity curve and resistivity curve; Inversion Calculation device, is connected with index correction instrument, for electrical conductivity curve and resistivity curve are carried out to Inversion Calculation, obtains formation resistivity section; Just drilling calculator, be connected with Inversion Calculation device, for formation resistivity section just being drilled calculate, just drilling resistivity curve and just drilling electrical conductivity curve; Make poor device, and just drill calculator and be connected, for calculating, just drill the first difference of resistivity curve and resistivity curve and just drilling electrical conductivity curve and the second difference of electrical conductivity curve; Comparator, and just drills calculator and is connected, for determining the first array response curve and the second array response curve according to the first difference and the second difference; Stratigraphic Curves calculator, is connected with comparator, for using the first array response curve, the second array response curve and formation resistivity section to carry out synthetic focusing processing, obtains formation characteristics data.
Particularly, the first array response curve and the second array response curve being carried out to synthetic focusing processes and obtains the array induction logging response curve in formation characteristics data; Array side in use formation resistivity section calculating formation characteristics data is to response curve.
Fig. 5 is according to the flow chart of the logging method of the utility model embodiment.As shown in Figure 5, this logging method can realize as follows:
Step S102: obtain the conductivity signal of surveying stratum and the resistivity signal of surveying stratum.
Step S104: according to the formation characteristics data on conductivity signal and resistivity signal acquisition detection stratum.
Adopt above-described embodiment of the present utility model, utilize inductive devices and electrode well logging apparatus to measure bed response (comprising conductivity signal and resistivity signal), then by processor, the bed response measuring is synthesized to processing, obtain surveying the different investigation depths on stratum, the formation characteristics data under different resolution.Inductive devices can accurately be measured the stratum characteristic of fresh water mud, electrode well logging apparatus can be measured the stratum characteristic of salt-water mud exactly, the synthetic formation characteristics data of surveying stratum of obtaining of signal that two well logging apparatus measured by processor, solved technical problem to the stratum measurement accuracy of thin layer and thin interbed low in prior art, improve the accuracy that thin layer and thin interbed stratum characteristic are detected, realized high precision and obtain the effect of the formation characteristics curve of thin layer and thin interbed
As shown in Figure 6, according to the step of the formation characteristics data on conductivity signal and resistivity signal acquisition detection stratum, can comprise:
Step S202: conductivity signal and resistivity signal are carried out to scale and process and obtain electrical conductivity curve and resistivity curve.
Step S204: electrical conductivity curve and resistivity curve are carried out to Inversion Calculation and obtain formation resistivity section.
Step S206: formation resistivity section is just being drilled to calculate and just drilling resistivity curve and just drilling electrical conductivity curve.
Step S208: calculate and just drilling the first difference of resistivity curve and resistivity curve and just drilling electrical conductivity curve and the second difference of electrical conductivity curve.
Step S210: determine the first array response curve and the second array response curve according to the first difference and the second difference.
Particularly, according to the first difference and the second difference, determine that the step of the first array response curve and the second array response curve can comprise: in the situation that the first difference is greater than predetermined threshold value, will just drill resistivity curve as the first array response curve; In the situation that the first difference is less than predetermined threshold value, using resistivity curve as the first array response curve; In the situation that the second difference is greater than predetermined threshold value, will just drill electrical conductivity curve as the second array response curve; In the situation that the second difference is less than predetermined threshold value, using electrical conductivity curve as the second array response curve.
Step S212: the first array response curve and the second array response curve are carried out to synthetic focusing and process and obtain the array induction logging response curve in formation characteristics data.
Step S214: the array side in use formation resistivity section calculating formation characteristics data is to response curve.
Formation characteristics data in above-described embodiment comprise that array induction logging response curve and array side are to response curve.
In above-described embodiment of the present utility model, by the inductive devices 10 shown in Fig. 2 or Fig. 3, the conductivity signal on the detection stratum being measured by each subarray, the resistivity signal measuring by electrode well logging apparatus 30, the conductivity signal measuring and resistivity signal are gathered by Acquisition Circuit, then by processor 50, carry out data processing.Particularly, processor obtains conductivity signal and resistivity signal, conductivity signal and resistivity signal are carried out to scale to be processed and obtains electrical conductivity curve and resistivity curve, by electrical conductivity curve and resistivity curve For Solving The Resistivities of The Earth section, and by formation resistivity section, carry out the response characteristic computational analysis of inductive devices 10 and electrode well logging apparatus 30, then contrasting original measurement multi-coil is that instrument sub-array responds curve and forward response multi-coil are the relation between instrument subarray curve, if being instrument sub-array responds curve, original measurement multi-coil surpasses specification error scope (being predetermined threshold value), utilizing forward response multi-coil is that this subarray calculated curve replacement original measurement multi-coil is this sub-array responds curve of instrument, thereby determine the first array response curve and the second array response curve.Then the first array response curve and the second array response curve carry out synthetic focusing and process and to obtain formation characteristics data, and these formation characteristics data have the feature of multiresolution, the response of many investigation depths.In addition, in above-described embodiment of the present utility model, can also utilize formation resistivity section computing array side direction resistivity response curve, thereby obtain array side to response characteristic.
Fig. 7 is according to the schematic diagram of the well logging apparatus of the utility model embodiment.As shown in Figure 7, this well logging apparatus can comprise: acquisition module 100, for obtaining the conductivity signal of surveying stratum and the resistivity signal of surveying stratum; Processing module 300, for surveying the formation characteristics data on stratum according to conductivity signal and resistivity signal acquisition.
Adopt above-described embodiment of the present utility model, utilize acquisition module to obtain bed response (comprising conductivity signal and resistivity signal), then by processing module, the bed response measuring is synthesized to processing, obtain surveying the different investigation depths on stratum, the formation characteristics data under different resolution.Inductive devices can accurately be measured the stratum characteristic of fresh water mud, electrode well logging apparatus can be measured the stratum characteristic of salt-water mud exactly, the synthetic formation characteristics data of surveying stratum of obtaining of signal that two well logging apparatus measured by processor, solved technical problem to the stratum measurement accuracy of thin layer and thin interbed low in prior art, improve the accuracy that thin layer and thin interbed stratum characteristic are detected, realized high precision and obtain the effect of the formation characteristics curve of thin layer and thin interbed.
In above-described embodiment of the present utility model, processing module 300 can comprise: scale processing module, and for conductivity signal and resistivity signal being carried out to scale, process and obtain electrical conductivity curve and resistivity curve; Inversion Calculation module, obtains formation resistivity section for electrical conductivity curve and resistivity curve are carried out to Inversion Calculation; Just drilling computing module, for formation resistivity section just being drilled calculate, just drilling resistivity curve and just drilling electrical conductivity curve; Difference calculating module, just drills the first difference of resistivity curve and resistivity curve and is just drilling electrical conductivity curve and the second difference of electrical conductivity curve for calculating; Determination module, for determining the first array response curve and the second array response curve according to the first difference and the second difference; Synthetic focusing module, for carrying out by the first array response curve and the second array response curve the array induction logging response curve that synthetic focusing processing obtains formation characteristics data; Side direction curve calculation module, for being used the array side of formation resistivity section calculating formation characteristics data to response curve.
Particularly, determination module can comprise: first determines submodule, in the situation that the first difference is greater than predetermined threshold value, will just drill resistivity curve as the first array response curve; Second determines submodule, in the situation that the first difference is less than predetermined threshold value, using resistivity curve as the first array response curve; The 3rd determines submodule, in the situation that the second difference is greater than predetermined threshold value, will just drill electrical conductivity curve as the second array response curve; The 4th determines submodule, in the situation that the second difference is less than predetermined threshold value, using electrical conductivity curve as the second array response curve.
From above description, can find out, the utility model has been realized following technique effect: adopt above-described embodiment of the present utility model, can measure array induction and array side to resistivity curve simultaneously, curve has the advantages such as resolution ratio is high, investigation depth is dark, and use logging method of the present utility model and device to be subject to well resistivity mud influence little, have the feature of wide accommodation, Formation Resistivity Measurement scope is 0.2-1000 ohm-meter; In addition, adopt above-described embodiment of the present utility model can effectively reduce circuit measuring precision, at one to two sub-array coil, be while there is certainty of measurement error, still can reach synthetic focusing effect, thereby on the basis of the scope of application of effectively widening instrument, can accurately survey thin layer and thin interbed.
It should be noted that, for aforesaid each embodiment of the method, for simple description, therefore it is all expressed as to a series of combination of actions, but those skilled in the art should know, the utility model is not subject to the restriction of described sequence of movement, because according to the utility model, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in manual all belongs to preferred embodiment, and related action and module might not be that the utility model is necessary.
The claimed controller of the application and each assembly that forms this controller are all a kind of entity products that has definite shape, constructs and occupy certain space.For example, microprocessor, signal processor, sub-processor etc. are all can computer equipment, terminal or server independent operating, that have particular hardware structure.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. a logging equipment, is characterized in that, comprising:
Inductive devices, for obtaining the conductivity signal of surveying stratum;
Electrode well logging apparatus, for obtaining the resistivity signal on described detection stratum;
Processor, is connected between described inductive devices and described electrode well logging apparatus, for according to the formation characteristics data of surveying stratum described in described conductivity signal and described resistivity signal acquisition.
2. logging equipment according to claim 1, is characterized in that, described logging equipment also comprises:
Acquisition Circuit, described inductive devices is connected with described processor by described Acquisition Circuit respectively with described electrode well logging apparatus, and described Acquisition Circuit is for being sent to described processor by the described conductivity signal collecting and described resistivity signal.
3. logging equipment according to claim 2, is characterized in that, described inductive devices comprises:
Transmitting coil, for emission detection signal;
Receiving system, is connected between described transmitting coil and described Acquisition Circuit, and described receiving system comprises a plurality of receiving coils, and described in each, receiving coil is respectively used to receive the described conductivity signal that detectable signal forms described in described detection bed response.
4. logging equipment according to claim 3, is characterized in that, described inductive devices also comprises:
Compensation arrangement, described receiving system is connected with described Acquisition Circuit by described compensation arrangement, described compensation arrangement comprises a plurality of bucking coils, a respectively corresponding described receiving coil setting of bucking coil described in each, described in each, bucking coil is for the directly coupling signal of the described conductivity signal eliminating corresponding described receiving coil and receive.
5. logging equipment according to claim 4, is characterized in that, described inductive devices also comprises:
The first housing, described transmitting coil, described compensation arrangement and described receiving system are successively set in described the first housing.
6. logging equipment according to claim 4, is characterized in that, described inductive devices also comprises:
The first housing, described transmitting coil, described compensation arrangement and described receiving system are arranged in described the first housing, and the described receiving coil cross arrangement in the described bucking coil in described compensation arrangement and described receiving system is arranged in described the first housing.
7. logging equipment according to claim 2, is characterized in that, described electrode well logging apparatus comprises:
Emission electrode, for emission detection electric current;
Measurement electrode group, comprises a plurality of measurement electrode, and described in each, measurement electrode is respectively used to receive the feedback signal that probe current forms described in described detection bed response;
Measuring circuit, connects with measurement electrode described in each respectively, and described measuring circuit is for measuring the potential difference of the described feedback signal between adjacent two described measurement electrode;
Collecting electrode, is connected between described measuring circuit and described Acquisition Circuit, the described potential difference of measuring for receiving described measuring circuit, and described potential difference is sent to described Acquisition Circuit as described resistivity signal.
8. logging equipment according to claim 7, is characterized in that, described electrode well logging apparatus also comprises:
The second housing, described emission electrode, described measurement electrode and described collecting electrode are successively set in described the second housing.
9. logging equipment according to claim 2, is characterized in that, described processor comprises:
Index correction instrument, is connected with described Acquisition Circuit, for described conductivity signal and described resistivity signal being carried out to scale, processes and obtains electrical conductivity curve and resistivity curve;
Inversion Calculation device, is connected with described index correction instrument, for described electrical conductivity curve and described resistivity curve are carried out to Inversion Calculation, obtains formation resistivity section;
Just drilling calculator, be connected with described Inversion Calculation device, for described formation resistivity section just being drilled calculate, just drilling resistivity curve and just drilling electrical conductivity curve;
Make poor device, be connected with the described calculator of just drilling, for calculating described the first difference and described the second difference of just drilling electrical conductivity curve and described electrical conductivity curve of just drilling resistivity curve and described resistivity curve;
Comparator, is connected with the described calculator of just drilling, for determining the first array response curve and the second array response curve according to described the first difference and the second difference;
Stratigraphic Curves calculator, is connected with described comparator, for using described the first array response curve, described the second array response curve and described formation resistivity section to carry out synthetic focusing processing, obtains described formation characteristics data.
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| CN201320617395.0U CN203531883U (en) | 2013-09-30 | 2013-09-30 | Well logging equipment |
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| CN201320617395.0U CN203531883U (en) | 2013-09-30 | 2013-09-30 | Well logging equipment |
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-
2013
- 2013-09-30 CN CN201320617395.0U patent/CN203531883U/en not_active Withdrawn - After Issue
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