CN105201491A - Method and device for determining flooding strength - Google Patents
Method and device for determining flooding strength Download PDFInfo
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- CN105201491A CN105201491A CN201510557880.7A CN201510557880A CN105201491A CN 105201491 A CN105201491 A CN 105201491A CN 201510557880 A CN201510557880 A CN 201510557880A CN 105201491 A CN105201491 A CN 105201491A
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Abstract
The embodiment of the invention provides a method and a device for determining flooding strength, wherein the method comprises the following steps: dividing an interpretation interval of a target single well into basic interpretation units; and determining the flooding intensity of the basic interpretation unit according to the flooding layer interpretation template. By utilizing the technical scheme introduced in the embodiment of the invention, the target single well can be divided into the basic interpretation units according to the geological lithology which is directly related to the flooding strength, and the flooding strength analysis is carried out on the finely divided target single well by using the flooding layer interpretation template, so that a more accurate qualitative analysis result of the flooding layer can be obtained.
Description
Technical field
The invention belongs to interpretation of logging data field, particularly a kind of method and device explaining reservoir water logging intensity.
Background technology
At present, the domestic each main force in land east oil field has entered or has entered High water cut, ultra-high water cut stage.The oil recoverable reserves in each main force in land east oil field is except part is from except the exploitation to new discovery oil field, and considerable part comes from carries out the exploitation after the management improvement of reservoir to the oil field found.And be the determination of reservoir water logging intensity to the basis that reservoir management is carried out in the oil field found.In addition, at water flood field mid-later development phase, understanding reservoir water flooding intensity is the key formulated the reasonable perforating scheme of adjust well and ensure development effectiveness.Therefore, explain that water logging intensity in reservoir is most important for the development level improving oil field.
In prior art, explain that the common method of submerged degree of oil reservoir is based on sealing core data, demarcated by rock core and set up bore hole well log interpretation standard, evaluate submerged degree of oil reservoir according to described bore hole well log interpretation criteria Qualitative.
Realizing in the application's process, inventor finds that in prior art, at least there are the following problems: in bore hole well log interpretation establishment of standard process, common method utilizes described sealing core data, sets up two formation water resistivity model.Described pair of formation water resistivity model makes an explanation to reservoir parameter according to the amplitude information of well-log information.For the oil field of long-term injecting water exploitation, formation water salinity changes greatly at the end, top between layers, in layer, occurs the situation that its water out behavior is widely different in the identical situation of many amplitude informations at described well-log information.In addition, setting up bore hole well log interpretation standard needs a large amount of basic datas and process of establishing is comparatively complicated, consuming time longer.
According to the method for bore hole well log interpretation standard determination water logging intensity in prior art, the evaluation result obtained is not accurate enough, evaluation procedure is also comparatively complicated, therefore, needs a kind of method that evaluation result is more accurate, water logging intensity is more simply determined in evaluation procedure badly.
Summary of the invention
The defects such as the inaccurate and process for prior art determination Water Flooding Layer method is complicated, the object of the present invention is to provide a kind of method and the device of determining water logging intensity, the accuracy of target individual well water logging intensity evaluation result can be improved, and reduce the complexity of evaluation procedure.
The embodiment of the present invention proposes a kind of method and device determining water logging intensity, describedly determines that the method for water logging intensity and device are specifically achieved in that
Determine a method for water logging intensity, it is characterized in that, described method comprises:
The explanation interval of target individual well is divided into basic Interpretation unit;
Offset well data in conjunction with described target individual well sets up Geologic analysis template;
According to described Geologic analysis template, determine the water logging intensity of described basic Interpretation unit.
Optionally, in an embodiment of the present invention, the described explanation interval by target individual well is divided into basic Interpretation unit, comprising:
Sand layers between adjacent shale layer thickness being more than or equal to the first preset value is as basic Interpretation unit.
Optionally, in an embodiment of the present invention, described first preset value is not less than 1 meter.
Optionally, in an embodiment of the present invention, after setting up Geologic analysis template in conjunction with offset well data, also comprise:
Geologic analysis template according to sealed coring well data correction;
Accordingly, the described water logging intensity determining described basic Interpretation unit according to described Geologic analysis template, comprising: the water logging intensity determining described basic Interpretation unit according to described revised Geologic analysis template.
Optionally, in an embodiment of the present invention, described according to sealed coring well data correction Geologic analysis template, comprising:
Carry out sealing core drilling to the water flood field of described target individual well location, and obtain the sealed coring well data of rock core, described sealed coring well data at least comprises Gas logging data and chemical examination data;
According to Gas logging data and the chemical examination data of described rock core, determine the gas logging curve form of described rock core under different water logging strength type;
The corresponding relation on the stratum of described rock core place interval and described target individual well is determined according to described sealed coring well data, the gas logging curve form of described rock core under different water logging strength type and described Geologic analysis template are contrasted, described Geologic analysis template is corrected.
Optionally, in an embodiment of the present invention, described offset well data at least comprises following one: rock core assay data, well-log information, with brill log data.
Optionally, in an embodiment of the present invention, described Geologic analysis template comprises the corresponding relation that the water logging strength type determined according to the analysis result of described offset well data and gas survey parameter.
Optionally, in an embodiment of the present invention, described water logging strength type comprises: oil reservoir, low Water Flooding Layer, middle Water Flooding Layer, strong Water Flooding Layer.
Optionally, in an embodiment of the present invention, described gas survey parameter comprises: total gas curve form, total gas curve and drilling time curve relation, C
1relative amount.
Optionally, in an embodiment of the present invention, after described Geologic analysis template according to sealed coring well data correction, also comprise:
According to the analysis result to described target individual well location geology characteristic, adjust the weight coefficient that described gas surveys parameter.
Determine a device for water logging intensity, it is characterized in that, described device comprises:
Division unit, for being divided into basic Interpretation unit by the explanation interval of target individual well;
Template sets up unit, for setting up Geologic analysis template in conjunction with the offset well data of described target individual well;
Determining unit, for according to described Geologic analysis template, calculates the water logging intensity of the basic Interpretation unit that described division unit divides.
Optionally, in an embodiment of the present invention, described division unit also comprises:
Setting unit, the thickness for arranging shale layer is more than or equal to the first preset value;
Divide subelement, for thickness is more than or equal to described first preset value adjacent shale layer between sand layers as described basic Interpretation unit.
Optionally, in an embodiment of the present invention, described first preset value that described setting unit is arranged is not less than 1 meter.
Optionally, in an embodiment of the present invention, described device also comprises:
Amending unit, for Geologic analysis template according to sealed coring well data correction;
Accordingly, the water logging intensity of described determining unit basic Interpretation unit that division unit divides according to described Geologic analysis formwork calculation comprises:
According to described revised Geologic analysis template, determine the water logging intensity of described basic Interpretation unit.
Optionally, in an embodiment of the present invention, described amending unit, also comprises:
Sealing core drilling unit, for carrying out sealing core drilling to the water flood field of described target individual well location, and obtain the sealed coring well data of rock core, described sealed coring well data at least comprises Gas logging data and chemical examination data;
Determine that gas surveys form unit, for according to the Gas logging data of described rock core and chemical examination data, determine the gas logging curve form of described rock core under different water logging strength type;
Contrast correcting unit, for determining the corresponding relation on the stratum of described rock core place interval and described target individual well according to described sealed coring well data, the gas logging curve form of described rock core under different water logging strength type and described Geologic analysis template are contrasted, described Geologic analysis template is corrected.
Optionally, in an embodiment of the present invention, described offset well data at least comprises following one: rock core assay data, well-log information, with brill log data.
Optionally, in an embodiment of the present invention, described Geologic analysis template comprises the corresponding relation that the water logging strength type determined according to the analysis result of described offset well data and gas survey parameter.
Optionally, in an embodiment of the present invention, described water logging strength type comprises: oil reservoir, low Water Flooding Layer, middle Water Flooding Layer, strong Water Flooding Layer.
Optionally, in an embodiment of the present invention, described gas survey parameter comprises: total gas curve form, total gas curve and drilling time curve relation, C
1relative amount.
Optionally, in an embodiment of the present invention, described device also comprises:
Adjustment unit, for according to the analysis result to described target individual well location geology characteristic, adjusts the weight coefficient that described gas surveys parameter.
The technique scheme of embodiment of the present invention introduction has following beneficial effect: by target individual well is become basic Interpretation unit according to geology lithology classification, described geologic lithology is contacted directly with water logging intensity again, use Geologic analysis template to carry out water logging strength analysis to the target individual well after meticulous division, more accurate Water Flooding Layer the qualitative analysis can be obtained.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the method flow diagram determining a kind of embodiment of water logging intensity method provided by the invention;
Fig. 2 is the method flow diagram of a kind of embodiment of Geologic analysis template according to sealed coring well data correction of the present invention;
Fig. 3 is the modular structure schematic diagram determining a kind of embodiment of water logging intensity device provided by the invention;
Fig. 4 is the modular structure schematic diagram of a kind of embodiment of amending unit provided by the invention;
Fig. 5 is the modular structure schematic diagram determining the another kind of embodiment of water logging intensity device provided by the invention;
Fig. 6 is the modular structure schematic diagram of a kind of embodiment of amending unit provided by the invention;
Fig. 7 is the modular structure schematic diagram determining the another kind of embodiment of water logging intensity device provided by the invention.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As mentioned above, middle level, stratum and layer, layer interior difference of pushing up water logging intensity at the end is have ignored during prior art determination target individual well water logging intensity, for this reason, the division of basic Interpretation unit is carried out on stratum by embodiment of the present invention method according to shale layer, sand layers, by the meticulous division on stratum, object is the accuracy improving water logging intensity evaluation result.Therefore, the present invention proposes a kind of method and the device of determining water logging intensity method.
Fig. 1 is the method flow diagram determining a kind of embodiment of water logging intensity method provided by the invention, and as shown in the figure, the method specifically comprises the following steps:
Step S1: the explanation interval of target individual well is divided into basic Interpretation unit.
In waterflooding oil field, for same interpretation layer, in interpretation layer, the water logging intensity of different depth also has very large difference, therefore can judge its water out behavior according to the concrete structure of each interpretation layer.Generally, be sand layers, shale layer intertonguing on each interpretation layer is longitudinal, due to shale layer compact structure, be generally not easy into water, therefore most of Water Flooding Layer is arranged in sand layers.For this reason, the embodiment of the present invention proposes the explanation interval of target individual well to be divided into basic Interpretation unit, and described basic Interpretation unit can comprise the sand layers in interpretation layer.
The concrete division methods of described basic Interpretation unit can be on gas logging curve longitudinally (being exactly depth direction), and the sand layers between the adjacent shale layer that thickness can be more than or equal to the first preset value is as described basic Interpretation unit.In the embodiment of the present invention, described shale layer can be interpreted as the insulating course of described basic Interpretation unit.Described first preset value can be set to be not less than 1 meter.When described shale layer thickness is less than the first preset value, described shale layer can be mixed in the sand layers be adjacent, and does not need to divide.
By the step S1 in the present embodiment, described target individual well is divided into several basic Interpretation unit, the water logging intensity of each basic Interpretation unit is determined by subsequent method step, solve the discrepant problem of water logging intensity of different depth in interpretation layer, improve the Explanation Accuracy of described target individual well water logging intensity.
Step S2: the offset well data in conjunction with described target individual well sets up Geologic analysis template.
Oil field is in waterflooding development process, and along with the prolongation of water injection cycle, the continuous increase of recovery percent of reserves, the water flooding degree of oil field Crude Oil oil reservoir improves, hydrocarbons reduces.Gas detection logging is content and the component of measuring hydrocarbon gas in stratum at the scene in well logging process, and gas logging curve can react the content of described hydrocarbon gas and the relation of depth of stratum.The water logging intensity of oil reservoir can be differentiated by analyzing described gas logging curve.
In the embodiment of the present invention, determine that the water logging intensity of described basic Interpretation unit can according to Geologic analysis template.Particularly, can set up described Geologic analysis template according to offset well data, described offset well data can at least comprise following one: rock core assay data, well-log information, with brill log data.
Described Geologic analysis template can comprise the relation that the water logging strength type determined according to the analysis result of described offset well data and gas survey parameter.Described water logging strength type comprises: oil reservoir, low Water Flooding Layer, middle Water Flooding Layer, strong Water Flooding Layer.Described gas is surveyed parameter and is comprised: total gas curve form, total gas curve and drilling time curve relation, C
1relative amount.
The basic water logging intensity of table 1 explains template table
Table 1 is that the basic water logging intensity that the embodiment of the present invention proposes explains template table, explains select above-mentioned three gas to survey the reason of parameter below in conjunction with table 1.
First, for total gas curve form, in same reservoir, due to the impact by reservoir heterogeneity, the water flooding degree of different depth can have larger difference.When non-water logging, oil reservoir is containing Chuck Steak, and the ratio of total hydrocarbon content in collection gas is greater than 50%, and total gas curve morphologic appearance is full box.Along with the increase of water injection rate, the raising of waterflood efficiency will cause the oil saturation of oil reservoir to reduce and hydrocarbons minimizing (especially C
1-C
4the minimizing of content), total hydrocarbon content decreases.Total hydrocarbon content be reduced in the decline that gas detection logging curve can show as total gas curve relative amplitude, and along with the enhancing of water injection time, water flooding degree is corresponding to be uprised, and the amplitude of total gas curve declines and also becomes large gradually.Meanwhile, total gas curve form also will change to some extent.The oil reservoir bottom physical property of positive rhythm deposition is relatively better, and in water drive process, first bottom crude oil displaced, and total gas curve bottom declines more, the form that total gas curve presents " top sunken bottom is put down "; The oil reservoir of anti-cyclothemic deposition is then contrary, the form in " pushing up flat convex ".Other are because of reservoir change, and shale content is different, and cementation method does not change the physical property change caused on an equal basis, then total gas curve can be made to be irregular " finger-like " or " dentation ".In low Water Flooding Layer, total hydrocarbon content can be 35%-50% gathering the ratio in gas, and the morphologic appearance of total gas curve is finger-like.In middle Water Flooding Layer, total hydrocarbon content can be 15%-35% gathering the ratio in gas, and the morphologic appearance of total gas curve is finger-like or dentation.In strong Water Flooding Layer, the ratio of total hydrocarbon content in collection gas can be less than 15%, and the morphologic appearance of total gas curve is finger-like or dentation.
For total gas curve and drilling time curve relation, total gas curve and drilling time curve all can have a baseline, baseline value sets based on experience value, the value departing from baseline in total gas curve can as total hydrocarbon needle position misalignment amount (representing with percentage), and the value departing from baseline in drilling time curve can as brill base line side-play amount (representing with percentage).The good oil reservoir of physical property of non-water logging, rate of penetration is fast, and drilling time curve low value is obvious, and total gas curve is high level, and the two anisotropy is obvious.Now, bore duration lower than baseline value, boring base line side-play amount can be greater than 50%, and total hydrocarbon content value is higher than baseline value, and total hydrocarbon needle position misalignment amount also can be greater than 50%.And the oil reservoir that physical property is poor, the anisotropy that drilling time curve and total gas curve present " during high brill, low total hydrocarbon ".In low Water Flooding Layer, along with the increase of water filling degree, the relation of drilling time curve and total gas curve by anisotropy to sex reversal in the same way.The relation of drilling time curve and total gas curve presents " middle anisotropy is to low same tropism ", namely duration is bored lower than baseline value, boring base line side-play amount can be 20%-50%, and total hydrocarbon content value is higher than baseline value, and total hydrocarbon needle position misalignment amount can be less than 20% or can be 20%-50%; Bore duration lower than baseline value, boring base line side-play amount can be less than 20%, and total hydrocarbon content value is higher than baseline value, and total hydrocarbon needle position misalignment amount can be 20%-50%; Or brill duration and total hydrocarbon content value are all lower than baseline value, and brill base line side-play amount and total hydrocarbon needle position misalignment amount all can lower than 20%.In middle Water Flooding Layer, the relation of drilling time curve and total gas curve presents " low same tropism in same tropism ", and namely bore duration and total hydrocarbon content value all lower than baseline value, boring base line side-play amount can lower than 20%, and total hydrocarbon needle position misalignment amount can be 20%-50%; Or brill duration and total hydrocarbon content value are all lower than baseline value, boring base line side-play amount can be 20%-50%, and total hydrocarbon needle position misalignment amount can lower than 20%.In strong Water Flooding Layer, the same tropism that drilling time curve and total gas curve present " during low brill, low total hydrocarbon ", namely brill duration and total hydrocarbon content value are all lower than baseline value, and brill base line side-play amount and total hydrocarbon needle position misalignment amount all can be greater than 50%.Therefore the relation of available total gas curve and drilling time curve judges the water logging intensity of oil reservoir.
For C
1relative amount, due in the component that mud logging unit device can detect, C
1solubility in water is minimum, C
2-C
4solubility in water can be C
1more than 2 times.This just causes in waterflooding extraction process, along with the increase of water filling degree, and C
1in total hydrocarbon gas relative amount increase, i.e. C
1/ (C
2+ C
3+ C
4) value change greatly.At oil reservoir, the relative amount of C1 can be less than 14; In low Water Flooding Layer, the relative amount of C1 can be 14-16; In middle Water Flooding Layer, the relative amount of C1 can be 16-18; In strong Water Flooding Layer, the relative amount of C1 can be greater than 18.
Step S3: according to described Geologic analysis template, determines the water logging intensity of described basic Interpretation unit.
According to described Geologic analysis template, the water logging intensity of described basic Interpretation unit is made an explanation, thus determine the water logging intensity of whole target individual well.
Subsequently, can also in conjunction with the dynamic data of the means of production and static data, as: absorb water production profile over the years, tracer data, cumulative water injected, reservoir are communicated with situation and the moisture situation of producing well, whether meet Reservoir Static in conjunction with the explanation results of numerical simulation result comprehensive descision to the water logging intensity of described target individual well, are dynamically familiar with.According to above-mentioned judgement, the feasibility of the determination water logging intensity method that the present embodiment proposes can be verified further, and accurately explain for follow-up Water Flooding Layer reference and foundation are provided.
Water logging intensity in step S2 explains that template is set up under ideal conditions, but in practical situations both, total gas curve form and total gas curve and drilling time curve relation often change, explain that in order to make described water logging intensity template more meets the actual conditions of region, so will revise described Geologic analysis template.Therefore, also step is comprised upon step s 2: Geologic analysis template according to sealed coring well data correction.
Fig. 2 is the method flow diagram of a kind of embodiment of Geologic analysis template according to sealed coring well data correction of the present invention, specifically comprises the following steps:
Step S21: carry out sealing core drilling to the water flood field of described target individual well location, and obtain the sealed coring well data of rock core, described sealed coring well data at least comprises Gas logging data and chemical examination data.
In described target individual well location, choose the water flood field being in development late stage, sealing core drilling is carried out to it.The rock core adopting usual method to obtain easily is subject to the pollution of drilling fluid, causes result of core analysis to have comparatively big error.The rock core adopting sealing core drilling to obtain substantially not by the pollution of drilling fluid, and truly can reflect the parameter values such as the geology degree of porosity of ground layer original, oil saturation and moisture content.Sealing core drilling specifically can be realized by the acting in conjunction of special hermetic core taking tool and sealing fluid.In embodiments of the present invention, the rock core got can grow 100 meters.
After obtaining rock core by sealing core drilling, obtain the sealed coring well data of rock core, described sealed coring well data at least comprises Gas logging data and chemical examination data.Described sealed coring well data can also comprise saturation ratio test data and oil displacement efficiency measurement data.
Step S22: according to Gas logging data and the chemical examination data of described rock core, determine the gas logging curve form of described rock core under different water logging strength type.
Basic water logging intensity shown in table 1 explains that in template, the form of total gas curve has box, finger-like, dentation, but in the realistic case, total gas curve form runs far deeper than these three kinds.In this step, according to Gas logging data and the chemical examination data of described rock core, the gas logging curve form of described rock core under different water logging strength type can be determined.Such as, under Water Flooding Layer state, total gas curve also may present triangle.
Step S23: the corresponding relation determining the stratum of described rock core place interval and described target individual well according to described sealed coring well data, the gas logging curve form of described rock core under different water logging strength type and described Geologic analysis template are contrasted, described Geologic analysis template is corrected.
The corresponding relation on the stratum of described rock core place interval and described target individual well is determined according to described sealed coring well data, the gas logging curve form of described rock core under different water logging strength type and described Geologic analysis template are contrasted, described Geologic analysis template is corrected.Such as, under each water logging strength type, enrich total gas curve form, make described explanation template more accurate.
Follow-up, when differing larger according to the gas logging curve form of Water Flooding Layer with described Geologic analysis template, according to the geology characteristic of target individual well location, the weight coefficient that described gas surveys parameter can be adjusted.Such as, through contrast, find in this area, C1 relative amount in described Geologic analysis template and the result degree of correlation of rock core very large, but total gas curve form does not meet very much, at this moment can improve the weight coefficient of C1 relative amount, reduce the weight coefficient of total gas curve form.Said method can be recycled secondary correction is carried out to described Geologic analysis template, until the gas logging curve form of described Water Flooding Layer and the matching rate of described Geologic analysis template higher till.
Introduce the device of the determination water logging intensity corresponding with above-described embodiment method below, Fig. 3 is the modular structure schematic diagram determining a kind of embodiment of water logging intensity device provided by the invention, as shown in Figure 3, describedly determine that water logging intensity device 30 comprises: division unit 31, template sets up unit 32 and determining unit 33, wherein
Division unit 31, for being divided into basic Interpretation unit by the explanation interval of target individual well;
Template sets up unit 32, sets up Geologic analysis template for described target individual well in conjunction with offset well data;
Determining unit 33, sets up Geologic analysis template for setting up unit 32 according to described template, calculates the water logging intensity of the basic Interpretation unit that described division unit 31 divides.
The modular structure schematic diagram of a kind of embodiment of amending unit provided by the invention, as shown in Figure 4, described division unit 31 also comprises setting unit 41 and divides subelement 42, wherein,
Setting unit 41, the thickness for arranging shale layer is more than or equal to the first preset value;
Divide subelement 42, for thickness is more than or equal to described first preset value adjacent shale layer between sand layers as basic Interpretation unit.
Fig. 5 is the modular structure schematic diagram determining the another kind of embodiment of water logging intensity device provided by the invention, as shown in Figure 5, describedly determines that the device 50 of water logging intensity also comprises:
Amending unit 51, described amending unit 51 is for Geologic analysis template according to sealed coring well data correction;
Accordingly, the water logging intensity of described determining unit 33 basic Interpretation unit that division unit divides according to described Geologic analysis formwork calculation comprises:
According to described revised Geologic analysis template, determine the water logging intensity of described basic Interpretation unit.
Fig. 6 is the modular structure schematic diagram of a kind of embodiment of amending unit provided by the invention, and as shown in Figure 6, described amending unit 51 comprises: sealing core drilling unit 61, determines that gas surveys form unit 62 and contrast correcting unit 63, wherein,
Sealing core drilling unit 61, for carrying out sealing core drilling to the water flood field of described target individual well location, and obtain the sealed coring well data of rock core, described sealed coring well data at least comprises Gas logging data and chemical examination data;
Determine that gas surveys form unit 62, for according to the Gas logging data of described rock core and chemical examination data, determine the gas logging curve form of described rock core under different water logging strength type;
Contrast correcting unit 63, for determining the corresponding relation on the stratum of described rock core place interval and described target individual well according to described sealed coring well data, the gas logging curve form of described rock core under different water logging strength type and described Geologic analysis template are contrasted, described Geologic analysis template is corrected.
Fig. 7 is the modular structure schematic diagram determining the another kind of embodiment of water logging intensity device provided by the invention, as shown in Figure 7, describedly determines that the device 70 of water logging intensity also comprises:
Adjustment unit 71, for according to the analysis result to described target individual well location geology characteristic, adjusts the weight coefficient that described gas surveys parameter.
Above-mentioned about described other related description determining the device of water logging intensity, please refer to the explanation of the determination water logging intensity method corresponding with it.
The technique scheme of embodiment of the present invention introduction has following beneficial effect: by target individual well is become basic Interpretation unit according to geology lithology classification, described geologic lithology is contacted directly with water logging intensity again, use Geologic analysis template to carry out water logging strength analysis to the target individual well after meticulous division, more accurate Water Flooding Layer the qualitative analysis can be obtained.The basis source of embodiment of the present invention method establishment Geologic analysis template is in existing offset well data, and water logging intensity deterministic process hinge structure method is more simple, reduction consuming time.In addition, embodiment of the present invention method can also be revised described Geologic analysis template, makes described explanation template more accurate.
Those skilled in the art can also recognize the various illustrative components, blocks (illustrativelogicalblock) that the embodiment of the present invention is listed, unit, and step can pass through electronic hardware, computer software, or both combinations realize.For the replaceability (interchangeability) of clear displaying hardware and software, above-mentioned various illustrative components (illustrativecomponents), unit and step have universally described their function.Such function is the designing requirement realizing depending on specific application and whole system by hardware or software.Those skilled in the art for often kind of specifically application, can use the function described in the realization of various method, but this realization can should not be understood to the scope exceeding embodiment of the present invention protection.
Various illustrative logical block described in the embodiment of the present invention, or unit can pass through general processor, digital signal processor, special IC (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the design of above-mentioned any combination realizes or operates described function.General processor can be microprocessor, and alternatively, this general processor also can be any traditional processor, controller, microcontroller or state machine.Processor also can be realized by the combination of calculation element, such as digital signal processor and microprocessor, multi-microprocessor, and a Digital Signal Processor Core combined by one or more microprocessor, or other similar configuration any realizes.
The software module that method described in the embodiment of the present invention or the step of algorithm directly can embed hardware, processor performs or the combination of both.Software module can be stored in the storage medium of other arbitrary form in RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this area.Exemplarily, storage medium can be connected with processor, with make processor can from storage medium reading information, and write information can be deposited to storage medium.Alternatively, storage medium can also be integrated in processor.Processor and storage medium can be arranged in ASIC, and ASIC can be arranged in user terminal.Alternatively, processor and storage medium also can be arranged in the different parts in user terminal.
In one or more exemplary design, the above-mentioned functions described by the embodiment of the present invention can realize in any combination of hardware, software, firmware or this three.If realized in software, these functions can store on the medium with computer-readable, or are transmitted on the medium of computer-readable with one or more instruction or code form.Computer readable medium comprises computer storage medium and is convenient to make to allow computer program transfer to the telecommunication media in other place from a place.Storage medium can be that any general or special computer can the useable medium of access.Such as, such computer readable media can include but not limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage device, or other anyly may be used for carrying or store the medium that can be read the program code of form with instruction or data structure and other by general or special computer or general or special processor.In addition, any connection can be properly termed computer readable medium, such as, if software is by a coaxial cable, fiber optic cables, twisted-pair feeder, Digital Subscriber Line (DSL) or being also comprised in defined computer readable medium with wireless way for transmittings such as such as infrared, wireless and microwaves from a web-site, server or other remote resource.Described video disc (disk) and disk (disc) comprise Zip disk, radium-shine dish, CD, DVD, floppy disk and Blu-ray Disc, and disk is usually with magnetic duplication data, and video disc carries out optical reproduction data with laser usually.Above-mentioned combination also can be included in computer readable medium.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (20)
1. determine a method for water logging intensity, it is characterized in that, described method comprises:
The explanation interval of target individual well is divided into basic Interpretation unit;
Offset well data in conjunction with described target individual well sets up Geologic analysis template;
According to described Geologic analysis template, determine the water logging intensity of described basic Interpretation unit.
2. the method determining water logging intensity according to claim 1, is characterized in that, the described explanation interval by target individual well is divided into basic Interpretation unit, comprising:
Sand layers between adjacent shale layer thickness being more than or equal to the first preset value is as basic Interpretation unit.
3. the method determining water logging intensity according to claim 2, is characterized in that, described first preset value is not less than 1 meter.
4. the method determining water logging intensity according to claim 1, is characterized in that, after the offset well data in conjunction with described target individual well sets up Geologic analysis template, also comprises:
Geologic analysis template according to sealed coring well data correction;
Accordingly, the described water logging intensity determining described basic Interpretation unit according to described Geologic analysis template, comprising: the water logging intensity determining described basic Interpretation unit according to described revised Geologic analysis template.
5. the method determining water logging intensity according to claim 4, is characterized in that, described according to sealed coring well data correction Geologic analysis template, comprising:
Carry out sealing core drilling to the water flood field of described target individual well location, and obtain the sealed coring well data of rock core, described sealed coring well data at least comprises Gas logging data and chemical examination data;
According to Gas logging data and the chemical examination data of described rock core, determine the gas logging curve form of described rock core under different water logging strength type;
The corresponding relation on the stratum of described rock core place interval and described target individual well is determined according to described sealed coring well data, the gas logging curve form of described rock core under different water logging strength type and described Geologic analysis template are contrasted, described Geologic analysis template is corrected.
6. the method determining water logging intensity according to claim 1, is characterized in that, described offset well data at least comprises following one: rock core assay data, well-log information, with brill log data.
7. the method for the determination water logging intensity according to claim 1 or 4, is characterized in that, described Geologic analysis template comprises the corresponding relation that the water logging strength type determined according to the analysis result of described offset well data and gas survey parameter.
8. the method determining water logging intensity according to claim 7, is characterized in that, described water logging strength type comprises: oil reservoir, low Water Flooding Layer, middle Water Flooding Layer, strong Water Flooding Layer.
9. the method determining water logging intensity according to claim 7, is characterized in that, described gas is surveyed parameter and comprised: total gas curve form, total gas curve and drilling time curve relation, C
1relative amount.
10. the method determining water logging intensity according to claim 7, is characterized in that, after described Geologic analysis template according to sealed coring well data correction, also comprises:
According to the analysis result to described target individual well location geology characteristic, adjust the weight coefficient that described gas surveys parameter.
11. 1 kinds of devices determining water logging intensity, it is characterized in that, described device comprises:
Division unit, for being divided into basic Interpretation unit by the explanation interval of target individual well;
Template sets up unit, for setting up Geologic analysis template in conjunction with the offset well data of described target individual well;
Determining unit, for according to described Geologic analysis template, calculates the water logging intensity of the basic Interpretation unit that described division unit divides.
12. devices determining water logging intensity according to claim 11, it is characterized in that, described division unit also comprises:
Setting unit, the thickness for arranging shale layer is more than or equal to the first preset value;
Divide subelement, for thickness is more than or equal to described first preset value adjacent shale layer between sand layers as basic Interpretation unit.
13. devices determining water logging intensity according to claim 12, is characterized in that, described first preset value that described setting unit is arranged is not less than 1 meter.
14. devices determining water logging intensity according to claim 11, is characterized in that, also comprise:
Amending unit, for Geologic analysis template according to sealed coring well data correction;
Accordingly, the water logging intensity of described determining unit basic Interpretation unit that division unit divides according to described Geologic analysis formwork calculation comprises:
According to described revised Geologic analysis template, determine the water logging intensity of described basic Interpretation unit.
15. devices determining water logging intensity according to claim 14, it is characterized in that, described amending unit, also comprises:
Sealing core drilling unit, for carrying out sealing core drilling to the water flood field of described target individual well location, and obtain the sealed coring well data of rock core, described sealed coring well data at least comprises Gas logging data and chemical examination data;
Determine that gas surveys form unit, for according to the Gas logging data of described rock core and chemical examination data, determine the gas logging curve form of described rock core under different water logging strength type;
Contrast correcting unit, for determining the corresponding relation on the stratum of described rock core place interval and described target individual well according to described sealed coring well data, the gas logging curve form of described rock core under different water logging strength type and described Geologic analysis template are contrasted, described Geologic analysis template is corrected.
16. devices determining water logging intensity according to claim 11, is characterized in that, described offset well data at least comprises following one: rock core assay data, well-log information, with brill log data.
The device of 17. determination water logging intensity according to claim 11 or 14, is characterized in that, described Geologic analysis template comprises the corresponding relation that the water logging strength type determined according to the analysis result of described offset well data and gas survey parameter.
18. devices determining water logging intensity according to claim 17, is characterized in that, described water logging strength type comprises: oil reservoir, low Water Flooding Layer, middle Water Flooding Layer, strong Water Flooding Layer.
19. devices determining water logging intensity according to claim 17, is characterized in that, described gas is surveyed parameter and comprised: total gas curve form, total gas curve and drilling time curve relation, C
1relative amount.
20. devices determining water logging intensity according to claim 17, is characterized in that, also comprise:
Adjustment unit, for according to the analysis result to described target individual well location geology characteristic, adjusts the weight coefficient that described gas surveys parameter.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626010A (en) * | 2016-03-16 | 2016-06-01 | 中国石油大学(华东) | Method for reasonably dividing water injection layer sections in segmented water injection well |
| CN106503295A (en) * | 2016-09-22 | 2017-03-15 | 中国石油天然气股份有限公司 | Method and device for explaining oil field water flooded layer by using state space model |
| CN107762496A (en) * | 2017-09-11 | 2018-03-06 | 中国石油天然气股份有限公司 | Method and device for determining interpretation layer interval |
| CN110019119A (en) * | 2017-10-12 | 2019-07-16 | 中石化石油工程技术服务有限公司 | A kind of reservoir oil-gas possibility logging explanation method and device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563668A (en) * | 2004-04-05 | 2005-01-12 | 大庆石油管理局 | Method of model of interpreting state space for raising precision of water flooded layer |
| GB2450033A (en) * | 2006-09-18 | 2008-12-10 | Schlumberger Holdings | Flooding then analysing a core sample |
| US20100126266A1 (en) * | 2007-04-26 | 2010-05-27 | Joseph Guillaume Christoffel Coenen | Formation core sample holder assembly and testing method |
| WO2011135466A1 (en) * | 2010-04-30 | 2011-11-03 | Schlumberger Canada Limited | System and method for determining the effect of water-based additives on oil recovery |
| CN102913242A (en) * | 2012-10-29 | 2013-02-06 | 陕西联盟物流有限公司 | Method of determining formation water resistivity of water flooded layer |
| CN103670390A (en) * | 2013-12-20 | 2014-03-26 | 中国石油天然气集团公司 | Water flooded layer well logging evaluation method and system |
| CN104847340A (en) * | 2015-03-26 | 2015-08-19 | 中国海洋石油总公司 | Flooded-layer well-logging quantitative evaluation method |
-
2015
- 2015-09-02 CN CN201510557880.7A patent/CN105201491B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563668A (en) * | 2004-04-05 | 2005-01-12 | 大庆石油管理局 | Method of model of interpreting state space for raising precision of water flooded layer |
| GB2450033A (en) * | 2006-09-18 | 2008-12-10 | Schlumberger Holdings | Flooding then analysing a core sample |
| US20100126266A1 (en) * | 2007-04-26 | 2010-05-27 | Joseph Guillaume Christoffel Coenen | Formation core sample holder assembly and testing method |
| WO2011135466A1 (en) * | 2010-04-30 | 2011-11-03 | Schlumberger Canada Limited | System and method for determining the effect of water-based additives on oil recovery |
| CN102913242A (en) * | 2012-10-29 | 2013-02-06 | 陕西联盟物流有限公司 | Method of determining formation water resistivity of water flooded layer |
| CN103670390A (en) * | 2013-12-20 | 2014-03-26 | 中国石油天然气集团公司 | Water flooded layer well logging evaluation method and system |
| CN104847340A (en) * | 2015-03-26 | 2015-08-19 | 中国海洋石油总公司 | Flooded-layer well-logging quantitative evaluation method |
Non-Patent Citations (1)
| Title |
|---|
| 黄保纲等: "利用气测资料判断调整井油层水淹程度的尝试", 《中国海上油气》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626010A (en) * | 2016-03-16 | 2016-06-01 | 中国石油大学(华东) | Method for reasonably dividing water injection layer sections in segmented water injection well |
| CN105626010B (en) * | 2016-03-16 | 2017-11-17 | 中国石油大学(华东) | A kind of water filling interval classifying rationally method in subsection water injection well |
| CN106503295A (en) * | 2016-09-22 | 2017-03-15 | 中国石油天然气股份有限公司 | Method and device for explaining oil field water flooded layer by using state space model |
| CN106503295B (en) * | 2016-09-22 | 2019-08-06 | 中国石油天然气股份有限公司 | Method and device for explaining oil field water flooded layer by using state space model |
| CN107762496A (en) * | 2017-09-11 | 2018-03-06 | 中国石油天然气股份有限公司 | Method and device for determining interpretation layer interval |
| CN110019119A (en) * | 2017-10-12 | 2019-07-16 | 中石化石油工程技术服务有限公司 | A kind of reservoir oil-gas possibility logging explanation method and device |
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|---|---|
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