CN202916219U - Device for measuring radius lower limit of reservoir pore throat of tight sandstone reservoir - Google Patents
Device for measuring radius lower limit of reservoir pore throat of tight sandstone reservoir Download PDFInfo
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- CN202916219U CN202916219U CN 201220296264 CN201220296264U CN202916219U CN 202916219 U CN202916219 U CN 202916219U CN 201220296264 CN201220296264 CN 201220296264 CN 201220296264 U CN201220296264 U CN 201220296264U CN 202916219 U CN202916219 U CN 202916219U
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- 239000011148 porous material Substances 0.000 title claims abstract description 41
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 50
- 238000001228 spectrum Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 14
- 238000004364 calculation method Methods 0.000 description 6
- 239000010779 crude oil Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 238000011157 data evaluation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
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Abstract
The embodiment of the utility model discloses tight sandstone reservoir becomes survey device of reservoir pore throat radius lower limit, including roar way acquisition device, carbon content acquisition device, roar way radius lower limit value acquisition device and get intersection device; the throat acquisition device is connected with the carbon content acquisition device; the carbon content acquisition device is connected with the throat radius lower limit value acquisition device; the roar radius lower limit value acquisition device is connected with the acquisition and collection device; the throat acquisition device is used for acquiring a plurality of throat which gradually become thinner; the carbon content acquisition device is used for sequentially selecting 1, 2, 3, 4, …, n and n +1 points from the thick end of a plurality of acquired rough roars, and performing energy spectrum measurement on the n +1 points point by point to acquire the carbon content of each point; the roar radius lower limit value acquisition device is used for obtaining the carbon content of each point and obtaining a plurality of compact sandstone reservoir roar radius lower limit values corresponding to a plurality of roars; and the intersection device is used for taking intersection of the plurality of value intervals to obtain the final compact sandstone reservoir formation pore throat radius lower limit value.
Description
Technical field
The utility model relates to the field tests of petroleum prospecting, relates in particular to the determinator that a kind of Sandstone Gas Reservoir becomes to hide pore throat radius lower limit.
Background technology
The secondary migration that crude oil shows in macroscopical reservoir is just showing as the migration of crude oil at hole, in shouting on the micro-scale.The tight sand oil reservoir is under Qi Chengzang power, resistance condition, and the minimum that crude oil can pass through is shouted radius and is called reservoir one-tenth Tibetan pore throat radius lower limit.The conventional porosity cutoff computing method such as the relative permeability method that adopts in the Reserves Calculation of Oilfield, empirical statistics method can not represent into the minimum pore throat radius that Tibetan process Crude Oil really can pass through.At present, also be not specifically designed to Sandstone Gas Reservoir and become to hide pore throat radius lower limit method for measuring and determinator.
The utility model content
The purpose of this utility model is the deficiency that can't measure quickly and accurately Sandstone Gas Reservoir one-tenth Tibetan pore throat radius lower limit that exists in the prior art in order to overcome, and provides a kind of Sandstone Gas Reservoir to become to hide the determinator of pore throat radius lower limit.
In order to achieve the above object, the utility model embodiment discloses the determinator that a kind of Sandstone Gas Reservoir becomes to hide pore throat radius lower limit, and described determinator comprises: shout deriving means, carbon content deriving means, shout radius lower limit deriving means and get the common factor device; Wherein, the described deriving means of shouting connects described carbon content deriving means; Described carbon content deriving means connects the described radius lower limit deriving means of shouting; The described radius lower limit deriving means of shouting connects the described common factor device of getting; Shout deriving means and be used for obtaining many of the core sample thin slice gradually shouting from the coarse to fine; The carbon content deriving means be used for to described many of obtaining gradually from the coarse to fine shout by butt end choose successively 1,2,3,4 ..., n, a n+1 point, and to described n+1 some pointwise is carried out power spectrum and is measured, obtain the carbon content of each point; Shout the carbon content that radius lower limit deriving means is used for the each point that obtains according to described carbon content deriving means, obtain described many and shout corresponding a plurality of Sandstone Gas Reservoir and become to hide and shout the radius lower limit; Get the common factor device and be used for becoming the interval of Tibetan pore throat radius lower limit to get common factor to described a plurality of Sandstone Gas Reservoir, obtain final Sandstone Gas Reservoir and become to hide pore throat radius lower limit.
The Sandstone Gas Reservoir of the utility model embodiment becomes to hide the determinator of pore throat radius lower limit, use two maturing apparatus of loopful border field emission scanning electron microscope and energy spectrometer, for true core, accuracy is high: and the utility model adopts measuring method under the high power lens, the tight sand oil reservoir is become to hide pore throat radius lower limit adopt repeatedly measurement, instant approach method, in real time accurately.Compare the conventional porosity cutoff computing method that adopt in the Reserves Calculation of Oilfield, the utility model does not need a large amount of Data Collections and evaluation work, the method for testing simple and fast.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those skilled in the art, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation that the Sandstone Gas Reservoir of the utility model embodiment becomes to hide the determinator of pore throat radius lower limit;
Fig. 2 utilizes Sandstone Gas Reservoir shown in Figure 1 to become the determinator of Tibetan pore throat radius lower limit to carry out the method flow diagram of an embodiment of pore throat radius lower limit mensuration;
Fig. 3 is in the specific embodiment of the present utility model, utilizes the Sandstone Gas Reservoir of the utility model embodiment to become the determinator of Tibetan pore throat radius lower limit that six measurement results of shouting are got common factor, and the Sandstone Gas Reservoir that obtains becomes to hide pore throat radius lower limit.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
In the utility model, the principle of its foundation is: oil reservoir pay sand core sample under micro-scale, observe one gradually from the coarse to fine oil-containing shout, if be exactly that crude oil becomes to hide and fills the minimum that can arrive and shout radius by spectroscopy detection to shouting not that oil-containing (hydro carbons is residual) locates.
Fig. 1 is the structural representation that the Sandstone Gas Reservoir of the utility model embodiment becomes to hide the determinator of pore throat radius lower limit.As shown in the figure, the Sandstone Gas Reservoir of present embodiment becomes the determinator of Tibetan pore throat radius lower limit to comprise:
Shout deriving means 101, be used for obtaining many of the core sample thin slice gradually shouting from the coarse to fine; Carbon content deriving means 102, be used for to described many of obtaining gradually from the coarse to fine shout by butt end choose successively 1,2,3,4 ..., n, a n+1 point, and to described n+1 some pointwise is carried out power spectrum and is measured, obtain the carbon content of each point; Shout radius lower limit deriving means 103, be used for the carbon content of the each point that obtains according to described carbon content deriving means, obtain described many and shout corresponding a plurality of Sandstone Gas Reservoir and become to hide and shout the radius lower limit; Get common factor device 104, be used for becoming the interval of Tibetan pore throat radius lower limit to get common factor to described a plurality of Sandstone Gas Reservoir, obtain final Sandstone Gas Reservoir and become to hide pore throat radius lower limit.
In the present embodiment, the described deriving means 101 of shouting is loopful border field emission scanning electron microscope.
In the present embodiment, described core sample is the oil producing interval sample, and described core sample thin slice does not carry out washing oil and adds any carbon containing class material of use, to prevent from affecting the determination of carbon content in later stage in manufacturing process.And in the present embodiment, described loopful border field emission scanning electron microscope is chosen when shouting, and uses first energy spectrometer to carry out power spectrum face scanning, only has on the face of observation certain carbon content is arranged, and just shows the corresponding interior carbon containing of shouting.
In the present embodiment, the described n point place of shouting in n+1 the point that radius lower limit deriving means 103 obtains according to carbon content deriving means 102 has carbon content, and the radius of shouting that uses described loopful border field emission scanning electron microscope to measure its correspondence is r
n, the n+1 point does not have carbon content, and the radius of shouting that uses described loopful border field emission scanning electron microscope to measure its correspondence is r
N+1It is, then described that to shout that corresponding Sandstone Gas Reservoir becomes to hide the interval of shouting radius lower limit r be r
n<r<r
N+1
In the present embodiment, shout radius lower limit deriving means 103 and get access to that described to shout that corresponding Sandstone Gas Reservoir becomes to hide the interval of shouting radius lower limit r be r
n<r<r
N+1After, if the width between n point and the n+1 point is excessive, also can between n point and n+1 point, again get a plurality of points, utilize approximatioss to obtain the more accurate described interval that the radius lower limit is shouted in corresponding Sandstone Gas Reservoir one-tenth Tibetan of shouting.
The described radius lower limit deriving means 103 of shouting also takes multiple measurements same core sample thin slice, obtains a plurality of intervals that the radius lower limit is shouted in corresponding Sandstone Gas Reservoir one-tenth Tibetan of shouting.
Fig. 2 utilizes Sandstone Gas Reservoir shown in Figure 1 to become the determinator of Tibetan pore throat radius lower limit to carry out the method flow diagram of an embodiment of pore throat radius lower limit mensuration.As shown in the figure, described assay method comprises:
Step S101 is placed into the core sample thin slice in the field emission scanning electron microscope working chamber of loopful border, shouts for one that obtains gradually from the coarse to fine.In the present embodiment, the core sample of choosing is the oil producing interval sample, and described core sample thin slice does not carry out washing oil and adds any carbon containing class material of use, to prevent from affecting the determination of carbon content in later stage in manufacturing process.
And, choosing when shouting, use first energy spectrometer to carry out the scanning of power spectrum face, so that initially seek the position that oil-containing is shouted.Only have on the face of observation certain carbon content is arranged, just show carbon containing in corresponding the shouting.
Step S102: to described shout by butt end choose successively 1,2,3,4 ..., n, a n+1 point, and to described n+1 some pointwise is carried out power spectrum and is measured, obtain the carbon content of each point;
Step S103: in described step S102, the n point that gets access to has carbon content, and the radius of shouting that uses described loopful border field emission scanning electron microscope to measure its correspondence is r
n, the n+1 point does not have carbon content, and the radius of shouting that uses described loopful border field emission scanning electron microscope to measure its correspondence is r
N+1It is, then described that to shout that corresponding Sandstone Gas Reservoir becomes to hide the interval of shouting radius lower limit r be r
n<r<r
N+1
In this step, described to shout that corresponding Sandstone Gas Reservoir becomes to hide the interval of shouting radius lower limit r be r when getting access to
n<r<r
N+1After, if the width between n point and the n+1 point is excessive, also can again get a plurality of points between n point and n+1 point, repeating said steps S102 and step S103 utilize approximatioss to obtain the more accurate described interval that the radius lower limit is shouted in corresponding Sandstone Gas Reservoir one-tenth Tibetan of shouting.For example:
If the n point has carbon content, and the radius of shouting that obtains its correspondence is r
n, the n+1 point does not have carbon content, and the radius of shouting corresponding to getter is r
N+1, the Sandstone Gas Reservoir that then obtains becomes to hide pore throat radius lower limit r and is: r
N+1<r<r
n, then choose the point between n, the n+1, the recycling approximatioss, repeating step S102 and step S103 obtain the described first Sandstone Gas Reservoir of shouting and become to hide the interval of pore throat radius lower limit.
Step S104: repeating step S101, S102, S103, same core sample thin slice is taken multiple measurements, obtain a plurality of intervals that the radius lower limit is shouted in corresponding Sandstone Gas Reservoir one-tenth Tibetan of shouting;
Step S105: the described a plurality of intervals of shouting corresponding Sandstone Gas Reservoir one-tenth Tibetan pore throat radius lower limit that obtain are got common factor, obtain final Sandstone Gas Reservoir and become to hide pore throat radius lower limit.
Specific embodiment:
Utilize determinator of the present utility model, the reservoir one-tenth of the public 22 well Sha Xi mausoleum group oil producing intervals in oil field, Gongshan mausoleum, the Sichuan Basin is hidden pore throat radius lower limit measure.
In the determination experiment, choose six and shout, article one is shouted the mensuration of having carried out 5 points, measurement result is as follows:
No. 1 point: shout diameter 138.1nm, carbon content 11.66%;
No. 2 points: shout diameter 101.1nm, carbon content 7.44%;
No. 3 points: shout diameter 75.87nm, carbon content 6.64%;
No. 4 points: shout diameter 43.44nm, carbon content 0%;
No. 5 points: peripheral mineral, carbon content 0% is got rid of the oil pollution possibility in the abrasive disc process.Obtain into Tibetan pore throat radius lower limit r1:21.61nm<r1<37.94nm.
Second is shouted the mensuration of having carried out 5 points, and measurement result is as follows:
No. 1 point: shout diameter 96.4nm, carbon content 16.2%;
No. 2 points: shout diameter 76.79nm, carbon content 10.95%;
No. 3 points: shout diameter 58.48nm, carbon content 10.54%;
No. 4 points: shout diameter 44.78nm, carbon content 0%;
No. 5 points: peripheral mineral, carbon content 0% is got rid of the oil pollution possibility in the abrasive disc process.Obtain into Tibetan pore throat radius lower limit r2:22.39nm<r2<29.24nm.
In like manner, measuring remaining four according to said apparatus shouts, obtain altogether six and form Tibetan pore throat radius lower limit, it is got common factor (as shown in Figure 3), the one-tenth Tibetan pore throat radius lower limit that then finally obtains the public 22 well Sha Xi mausoleum group oil reservoirs in oil field, Gongshan mausoleum, the Sichuan Basin is 24.5nm<R<25.4nm.
The Sandstone Gas Reservoir of the utility model embodiment becomes to hide the determinator of pore throat radius lower limit, uses two instruments of loopful border field emission scanning electron microscope and energy spectrometer, and for true core, accuracy is high.And the utility model adopts measuring method under the high power lens, the tight sand oil reservoir is become to hide pore throat radius lower limit adopt repeatedly measurement, instant approach method, in real time accurately.Compare the conventional porosity cutoff computing method that adopt in the Reserves Calculation of Oilfield, the utility model does not need a large amount of Data Collections and evaluation work, the method for testing simple and fast.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. the determinator of a Sandstone Gas Reservoir one-tenth Tibetan pore throat radius lower limit is characterized in that described determinator comprises to be shouted deriving means, carbon content deriving means, shout radius lower limit deriving means and get the common factor device;
Wherein, the described deriving means of shouting connects described carbon content deriving means; Described carbon content deriving means connects the described radius lower limit deriving means of shouting; The described radius lower limit deriving means of shouting connects the described common factor device of getting;
Shout deriving means and be used for obtaining many of the core sample thin slice gradually shouting from the coarse to fine;
The carbon content deriving means be used for to described many of obtaining gradually from the coarse to fine shout by butt end choose successively 1,2,3,4 ..., n, a n+1 point, and to described n+1 some pointwise is carried out power spectrum and is measured, obtain the carbon content of each point;
Shout the carbon content that radius lower limit deriving means is used for the each point that obtains according to described carbon content deriving means, obtain described many and shout corresponding a plurality of Sandstone Gas Reservoir and become to hide and shout the radius lower limit;
Get the common factor device and be used for becoming the interval of Tibetan pore throat radius lower limit to get common factor to described a plurality of Sandstone Gas Reservoir, obtain final Sandstone Gas Reservoir and become to hide pore throat radius lower limit.
2. Sandstone Gas Reservoir according to claim 1 becomes to hide the determinator of pore throat radius lower limit, it is characterized in that the described deriving means of shouting is loopful border field emission scanning electron microscope.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103675236A (en) * | 2013-12-19 | 2014-03-26 | 中国石油天然气股份有限公司 | Method and device for measuring critical tight oil filling pore throat radius threshold |
CN104213913A (en) * | 2014-07-24 | 2014-12-17 | 中国石油大学(华东) | Method for calculating effective exploitation permeability lower limits of low-permeability clastic rock reservoir |
CN104453882A (en) * | 2014-12-10 | 2015-03-25 | 中国石油天然气股份有限公司 | Method and device for determining movable crude oil reserve of tight reservoir |
CN110726778A (en) * | 2018-07-17 | 2020-01-24 | 中国石油化工股份有限公司 | Method and system for judging lower limit of flowing croup of shale oil |
CN115728202A (en) * | 2022-11-04 | 2023-03-03 | 西南石油大学 | Method for determining radius lower limit of shale movable throat |
-
2012
- 2012-06-19 CN CN 201220296264 patent/CN202916219U/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103675236A (en) * | 2013-12-19 | 2014-03-26 | 中国石油天然气股份有限公司 | Method and device for measuring critical tight oil filling pore throat radius threshold |
CN103675236B (en) * | 2013-12-19 | 2016-06-08 | 中国石油天然气股份有限公司 | Method and device for measuring critical tight oil filling pore throat radius threshold |
CN104213913A (en) * | 2014-07-24 | 2014-12-17 | 中国石油大学(华东) | Method for calculating effective exploitation permeability lower limits of low-permeability clastic rock reservoir |
CN104453882A (en) * | 2014-12-10 | 2015-03-25 | 中国石油天然气股份有限公司 | Method and device for determining movable crude oil reserve of tight reservoir |
CN104453882B (en) * | 2014-12-10 | 2017-03-08 | 中国石油天然气股份有限公司 | Method and device for determining movable crude oil reserve of tight reservoir |
CN110726778A (en) * | 2018-07-17 | 2020-01-24 | 中国石油化工股份有限公司 | Method and system for judging lower limit of flowing croup of shale oil |
CN115728202A (en) * | 2022-11-04 | 2023-03-03 | 西南石油大学 | Method for determining radius lower limit of shale movable throat |
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