CN111948111A - Full-diameter rock core holder - Google Patents
Full-diameter rock core holder Download PDFInfo
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- CN111948111A CN111948111A CN202010773779.6A CN202010773779A CN111948111A CN 111948111 A CN111948111 A CN 111948111A CN 202010773779 A CN202010773779 A CN 202010773779A CN 111948111 A CN111948111 A CN 111948111A
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- 239000011435 rock Substances 0.000 title claims description 17
- 238000004458 analytical method Methods 0.000 claims abstract description 73
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 230000035699 permeability Effects 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a full-diameter core holder, which comprises a standard sample container (4), wherein the standard sample container (4) is provided with an air guide hole (42), and is characterized in that: a diversion trench (41) is arranged on the outer wall of the sample container (4); the air guide holes (42) are positioned in the guide grooves (41); the flow guide groove (41) is used for collecting and guiding the analysis gas to flow into the gas guide hole (42) so as to increase the stability of the gas flow; the problem that the air passage of the existing full-diameter core holder is not smooth so that the stability of air flow is influenced during sample testing is solved.
Description
Technical Field
The invention relates to the technical field of petroleum geology experiments, in particular to a full-diameter core holder for measuring rock permeability, which is suitable for a full-diameter rock permeability analyzer.
Background
The core permeability is an important parameter of reservoir physical properties, the full-diameter core permeability analysis is an important analysis method for reservoir physical properties, and the full-diameter core permeability analysis can reduce the influence of factors such as holes and cracks on core permeability analysis data.
At present, a throttling method is widely used as a conventional reservoir full-diameter core permeability analysis method, and a full-diameter core holder with a corresponding size is required to be equipped during testing. The principle of the equipment is based on Darcy's law, gas flows through a rock sample (hereinafter referred to as a rock core) under a certain pressure difference according to the Darcy's law, when the flow is stable and laminar, the permeability of the rock core is related to the pressure difference, the gas viscosity, the gas flow and the geometric dimension of the rock core, and a calculation formula suitable for a throttling method can be obtained by deducing according to the Darcy's law.
The horizontal permeability is calculated according to equation (1):
the vertical permeability is calculated according to equation (2):
in the formula:
Khorizontal permeability, 10-3μm2；
K ⊥Vertical permeability, 10-3μm2；
P 0 -atmospheric pressure under test conditions, MPa;
Q 0 at atmospheric pressure P0Gas flow rate through the rock sample, cm3/s；
μ-viscosity of the gas, mPa · s;
L-rock sample length, cm;
Across-sectional area of rock sample, cm2；
GShape factor, which is based on the angle of shielding by the arc plate (when the screen area is ¼ of the rock sample side area, the shape factor isG =1）；
P 1 、P 2 -inlet and outlet pressure, MPa, at both ends of the rock sample.
From the formula, the permeability of the rock core is related to pressure difference, gas flow and the like, and the gas is required to flow stably and laminar when flowing through the rock core; however, the existing full-diameter core holder has the problem of unsmooth air passage, which affects the stability of air flow, so that the sample test is unstable.
Disclosure of Invention
In view of the above, the invention provides a full-diameter core holder, which solves the problem that the gas path of the existing full-diameter core holder is not smooth, so that the gas flow stability is influenced during sample testing.
In order to solve the technical problem, the full-diameter core holder comprises a standard sample container, wherein the standard sample container is provided with an air guide hole, and the full-diameter core holder is characterized in that:
a diversion trench is arranged on the outer wall of the sample container;
the air guide holes are positioned in the guide grooves;
the flow guide groove is used for collecting and guiding the analysis gas to flow into the gas guide hole so as to increase the stability of the gas flow.
Further, the diversion trench is a longitudinal strip-shaped trench.
Further, a side clamping plate is arranged on the outer side of the flow guide groove;
the side clamping plate is provided with an air guide groove;
the gas guide groove is used for collecting and guiding the analysis gas to flow into the flow guide groove.
Further, the number of the air guide grooves is at least one.
Further, the air guide grooves are distributed on the side clamping plates in a grid shape.
Furthermore, air guide pads are arranged at two ends of the sample container;
an air inlet structure is arranged on the air guide pad;
the gas inlet structure is used as a passage for the analysis gas to enter the gas guide hole.
Further, the air inlet structure is a straight gap or a tooth-shaped groove which vertically penetrates through the air guide pad;
and the analysis gas enters the gas guide hole of the standard sample container through the straight notch or the tooth-shaped groove.
Further, the air intake structure is the tooth-shaped groove;
the tooth-shaped groove is provided with a tooth-shaped convex structure;
the tooth-shaped convex structures are used for supporting the side clamping plates so as to avoid the deformation of the side clamping plates under the action of excessive analysis pressure.
Further, the standard container comprises a main body;
the main body is provided with an inner hole and is used for containing a rock core sample;
a sealing press ring and an inner hole cover are also arranged in the inner hole;
the sealing press ring and the inner hole cover are used for fixing the core sample in the inner hole.
Furthermore, two ends of the standard sample container are respectively provided with a sample upper plug and a sample lower plug;
the sample upper plug and the sample lower plug are respectively provided with an upper analysis gas channel and a lower analysis gas channel;
the upper analysis gas channel, the lower analysis gas channel and the gas guide hole form an analysis gas channel;
and the analysis gas channel is used for conveying the analysis gas to flow through the core sample under a certain pressure difference so as to carry out full-diameter core permeability test.
The invention has the following beneficial effects:
according to the full-diameter core holder, the symmetrical and long guide grooves are formed in the two sides of the standard sample container, and the guide grooves gather and guide the analysis gas to flow into the air guide holes in a laminar flow state, so that the gas path is smooth, and the problem that the gas path of the existing full-diameter core holder is not smooth, so that the stability of the gas flow is influenced during sample testing is solved.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 is an exploded view of a full diameter core holder according to an embodiment of the present disclosure;
FIG. 2 is a schematic assembly view of a full diameter core holder according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a sample container according to an embodiment of the present invention;
FIG. 4A is a graph of the analysis gas flow profile during a prior full diameter core holder test;
FIG. 4B is an analysis gas flow profile during a full diameter core holder test according to an embodiment of the present disclosure;
FIG. 5A is a schematic structural view of a side clamping plate according to an embodiment of the invention;
FIG. 5B is a schematic view of a side clamping plate and a standard container according to an embodiment of the present invention;
FIG. 6A is a schematic diagram of the configuration of a gas cushion of a prior art full diameter core holder;
FIG. 6B is a schematic diagram of the configuration of the air guide cushion of a full diameter core holder in accordance with an embodiment of the present disclosure;
FIG. 6C is a schematic perspective view of a gas cushion of a full diameter core holder in accordance with an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of the structure of a plug on a sample in accordance with an embodiment of the present invention;
FIG. 8 is a schematic structural view of a lower plug of a sample in accordance with an embodiment of the present invention;
FIG. 9 is a full diameter core holder test assembly view of an embodiment of the present invention;
FIG. 10 is a full diameter core holder test gas flow diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth. However, the present invention may be fully understood by those skilled in the art for those parts not described in detail.
Furthermore, those skilled in the art will appreciate that the drawings are provided solely for the purposes of illustrating the invention, features and advantages thereof, and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
FIG. 1 is an exploded view of a full diameter core holder according to an embodiment of the present disclosure; FIG. 2 is a schematic assembly view of a full diameter core holder according to an embodiment of the present disclosure; in fig. 1 and 2, the full-diameter core holder of the present embodiment includes an upper sample plug 1, a side clamping plate 2, a lower sample plug 3, a sample container 4, and an air guide pad 5.
Wherein: the structures of the upper sample plug 1 and the lower sample plug 3 are the same as those of the upper sample plug and the lower sample plug of the existing full-diameter core holder, and the two parts are not improved in the embodiment.
FIG. 3 is a schematic diagram of a sample container according to an embodiment of the present invention; as shown in fig. 3: the sample container 4 comprises a main body 40, a sealing press ring 43 and an inner hole cover 44, wherein a core is contained in the inner cavity of the main body 40, the main body 40 is provided with an air guide hole 42, and the sealing press ring 43 and the inner hole cover 44 are used for fixing a core sample in the inner cavity of the main body 40; the structure and the arrangement mode of the air vent arranged on the sample container main body of the existing full-diameter core holder are the same, the structures of the sealing ring press ring 43 and the inner core hole cover 44 are not changed, and the difference is that the outer wall of the main body 40 of the sample container 4 of the embodiment is provided with the flow guide groove 41, and the air vent 42 is positioned in the flow guide groove 41.
FIG. 4A is a graph of the analysis gas flow profile during a prior full diameter core holder test; in the figure, when the existing full-diameter core holder is used for testing, analysis gas flows in from a gap between the side clamping plate 2 and the standard sample container 4, the gas flow of the analysis gas is randomly diffused on the surface of the main body of the standard sample container 4, part of the gas flow enters a first flow guide hole in the main body of the standard sample container 4 and further enters the core 100, and then flows out from a second flow guide hole in the main body of the standard sample container 4; the other part of the water flows out from the gap between the side clamping plate 2 and the standard sample container 4 and does not enter the flow guide hole to participate in the test, namely overflow is generated; due to the overflow, the analysis gas input during the test is difficult to stably enter the diversion hole, so that the flow of the analysis gas entering the sample container 4 is small and unstable, and the test result is affected.
FIG. 4B is an analysis gas flow profile during a full diameter core holder test according to an embodiment of the present disclosure; the guide groove 41 on the main body 40 of the standard sample container 4 of the full-diameter core holder of the embodiment can accumulate the analysis gas in the guide groove 41, and the accumulated analysis gas continuously flows into the gas guide hole 42 from the guide groove 41, so that the generation of gas overflow is reduced, the flow of the analysis gas entering the standard sample container 4 is increased, the stability of the inflow gas flow is improved, the analysis gas can flow into the gas guide hole 42 in a laminar flow state, and the problem that the stability of the gas flow is influenced when a sample is tested due to the fact that the original gas path is not smooth is solved.
In fig. 3, the flow guide groove 41 is a longitudinal strip groove.
The outer side of the diversion trench 41 is provided with a side clamping plate 2; the side clamping plate is improved, the surface of the original side clamping plate is not provided with a groove structure, and the analysis gas flows in a disordered diffusion state when passing through a crack formed between the side clamping plate and the outer surface of the standard sample container; FIG. 5A is a schematic structural view of a side clamping plate according to an embodiment of the invention; FIG. 5B is a schematic view of a side clamping plate and a standard container according to an embodiment of the present invention; in fig. 5A and 5B, the gas guide grooves 21 are formed on the side clamping plate 2, the gas guide grooves 21 form an analysis gas flow channel, and the analysis gas can easily enter the flow guide grooves 41 through the gas guide grooves 21 of the side clamping plate 2 from the upper portion and then enter the gas guide holes 42 along the flow guide grooves 41; that is, the gas guiding groove 21 is used for collecting and guiding the analysis gas to flow into the flow guiding groove 41, but the input analysis gas flows into the flow guiding groove 41 in a disordered diffusion state, so that the flow guiding effect of the gas guiding groove 21 on the analysis gas can further ensure that the gas flow rate and the gas flow stability entering the sample container 4 are increased.
Preferably, as shown in fig. 5A, the gas guide grooves 21 are distributed on the side clamping plate 2 in a grid shape, so as to form a grid-shaped gas flow channel, and the grid-shaped gas guide grooves 21 in the transverse and longitudinal directions guide the gas flow directionally, so as to avoid that the gas flow in a certain direction is influenced by an excessive pressure in the direction, improve the fluency of the gas flow, and increase the stability of the analysis result.
The two ends of the sample container 4 are the same as the existing clamper, a gas guide pad 5 is required to be respectively arranged, and a gas inlet structure is arranged on the gas guide pad 5 and used as a passage for the analysis gas to enter the gas guide hole. This embodiment has also improved the air guide cushion, and the inlet structure of original air guide cushion is as shown in fig. 6A, sets up a straight breach on the body of air guide cushion, when analysis pressure increases suddenly, can make the end pressure of giving vent to anger concentrate on the gas outlet, causes copper side splint to bear great pressure and produce the deformation.
As shown in fig. 6B and 6C, the gas guide pad structure of the present embodiment is configured such that a tooth-shaped groove 51 is formed on one side wall of the gas guide pad 5 body, when the analysis pressure increases, the analysis gas can flow out from different notches of the tooth-shaped groove 51 to disperse the pressure, thereby preventing the side clamping plates 2 from deforming due to the large pressure; in addition, the tooth-shaped grooves 51 of the air guide cushion 5 simultaneously form tooth-shaped protrusion structures, and the tooth-shaped protrusions can play a role in supporting the side clamping plate 2, so that the deformation space of the side clamping plate 2 is reduced, and the purpose of reducing the deformation of the side clamping plate 2 is further achieved.
The sample upper plug 1 and the sample lower plug 3 are respectively arranged at two ends of the sample container 4 in the embodiment; the sample upper plug 1 and the sample lower plug 3 are respectively provided with an upper analysis gas channel and a lower analysis gas channel; the upper analysis gas channel, the lower analysis gas channel and the gas guide hole 42 form an analysis gas channel; and the analysis gas channel is used for conveying the analysis gas to flow through the core sample under a certain pressure difference so as to carry out full-diameter core permeability test.
FIG. 7 is a schematic diagram of the structure of a plug on a sample in accordance with an embodiment of the present invention; FIG. 8 is a schematic structural view of a lower plug of a sample in accordance with an embodiment of the present invention; in fig. 7 and 8, the sample upper plug 1 includes an upper member 11, a middle member 12, and a lower member 13; the sample lower plug 3 comprises an upper component 31, a middle component 32 and a lower component 33.
Specifically, the structure and the working process of the original full-diameter core holder and the full-diameter core holder of the present embodiment are compared to further illustrate the beneficial effects of the full-diameter core holder of the present embodiment:
the specification of the diversion trench 41 on the standard sample container of the core holder is 80mm long, 4mm wide and 1.5mm deep; the tooth-shaped groove 51 on the air guide cushion 5 comprises 6 notches, the specification of the notches is a rectangle with the width of 6mm multiplied by the depth of 3mm, and the distance between two adjacent notches is 3.8 mm; the core side clamping plate 2 is made of copper, the specification is that the length is 110mm, the width is 62.8mm, the thickness is 1mm, the groove depth and the groove width of the latticed air guide grooves 21 are both 0.4mm, and the distance between every two adjacent air guide grooves 21 is 3 mm.
FIG. 9 is a full diameter core holder test assembly view of an embodiment of the present invention; FIG. 10 is a full diameter core holder test gas flow diagram of an embodiment of the present invention. In fig. 9, when in use, the whole full-diameter holder is sleeved by the rubber sleeve 200, the outermost side is fixed by the external fixing device 300, and the upper end and the lower end are connected with the air source.
When the original full-diameter core holder is used, confining pressure is applied from the outside at first, so that a rubber sleeve hoops a standard sample container and a side clamping plate, and the side clamping plate has the function of enabling analysis gas entering from the upper part to flow between a gap between the standard sample container and the side clamping plate; the side clamping plates are directly attached and contacted with the standard sample container, the analysis gas flows downwards along the gap between the side clamping plates and the standard sample container after entering from the flat gap of the gas guide pad at the upper part, and enters the standard sample container from the gas guide holes, but the other part of the gas continuously flows downwards along the gap due to lack of flow guide, so that the analysis gas overflows downwards and is turbulent; similarly, the analysis gas flows out from the leading-out end of the standard sample container after passing through the core sample, and in view of the same assembly relationship between the leading-out end side clamping plate and the standard sample container, the problem of downward overflow and turbulence of the analysis gas can be generated at the leading-out end, and the overflow can influence the flow rate of the analysis gas, so that the flow rate is suddenly reduced, and the stability of an analysis result is finally influenced.
The core holder of this embodiment, after increase standard sample container guiding gutter 41 and side splint air guide groove 21, analysis gas gets into guiding gutter 41 through side splint air guide groove 21 from upper portion, can form analysis gas advantage passageway, makes analysis gas get into air guide hole 42 smoothly, and guiding gutter 41 and side splint air guide groove 21 of lower part also can guide analysis gas to flow out, has increased the stability that analysis gas flows.
The above-mentioned embodiments are merely embodiments for expressing the invention, and the description is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, substitutions of equivalents, improvements and the like can be made without departing from the spirit of the invention, and these are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A full-diameter core holder comprises a standard sample container (4), wherein the standard sample container (4) is provided with an air guide hole (42), and is characterized in that:
a diversion trench (41) is arranged on the outer wall of the sample container (4);
the air guide holes (42) are positioned in the guide grooves (41);
the flow guide groove (41) is used for collecting and guiding the analysis gas to flow into the gas guide hole (42) so as to increase the stability of the gas flow.
2. The full diameter core holder of claim 1, wherein:
the flow guide groove (41) is a longitudinal strip-shaped groove.
3. The full diameter core holder of claim 2, wherein:
a lateral clamping plate (2) is arranged on the outer side of the guide groove (41);
the side clamping plate (2) is provided with an air guide groove (21);
the gas guide groove (21) is used for collecting and guiding the analysis gas to flow into the flow guide groove (41).
4. The full diameter core holder as recited in claim 3, wherein:
the number of the air guide grooves (21) is at least one.
5. The full diameter core holder as recited in claim 4, wherein:
the air guide grooves (21) are distributed on the side clamping plates (2) in a grid shape.
6. The full diameter core holder as recited in claim 3, wherein:
air guide pads (5) are arranged at two ends of the sample container (4);
an air inlet structure is arranged on the air guide cushion (5);
the gas inlet structure is used as a passage for the analysis gas to enter the gas guide hole (42).
7. The full diameter core holder as recited in claim 6, wherein:
the air inlet structure is a straight gap or a tooth-shaped groove (51) which vertically penetrates through the air guide cushion (5);
the analysis gas enters the gas guide hole (42) of the standard sample container (4) through the straight notch or the tooth-shaped groove (51).
8. The full diameter core holder as recited in claim 7, wherein:
the air intake structure is the toothed groove (51);
the tooth-shaped groove (51) is provided with a tooth-shaped convex structure;
the tooth-shaped convex structure is used for supporting the side clamping plate (2) to avoid the deformation of the side clamping plate (2) under the action of excessive analysis pressure.
9. The full diameter core holder as recited in any of claims 1-8, wherein:
the standard sample container comprises a main body;
the main body is provided with an inner hole and is used for containing a rock core sample;
a sealing press ring and an inner hole cover are also arranged in the inner hole;
the sealing press ring and the inner hole cover are used for fixing the core sample in the inner hole.
10. The full diameter core holder of claim 9, wherein:
the two ends of the standard sample container (4) are respectively provided with a sample upper plug (1) and a sample lower plug (3);
the sample upper plug (1) and the sample lower plug (3) are respectively provided with an upper analysis gas channel and a lower analysis gas channel;
the upper analysis gas channel, the lower analysis gas channel and the gas guide hole (42) form an analysis gas channel;
and the analysis gas channel is used for conveying the analysis gas to flow through the core sample under a certain pressure difference so as to carry out full-diameter core permeability test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773779.6A CN111948111B (en) | 2020-08-04 | 2020-08-04 | Full-diameter core holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773779.6A CN111948111B (en) | 2020-08-04 | 2020-08-04 | Full-diameter core holder |
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| Publication Number | Publication Date |
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| CN111948111A true CN111948111A (en) | 2020-11-17 |
| CN111948111B CN111948111B (en) | 2024-06-04 |
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| CN202010773779.6A Active CN111948111B (en) | 2020-08-04 | 2020-08-04 | Full-diameter core holder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903566A (en) * | 2021-03-02 | 2021-06-04 | 东北石油大学 | Full-diameter core radial permeability test tool |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2566263Y (en) * | 2002-01-29 | 2003-08-13 | 大庆油田有限责任公司 | Large diam rock gas permeability tester marker |
| CN106248555A (en) * | 2016-09-09 | 2016-12-21 | 中国石油大学(华东) | A kind of clamper measuring full-hole core permeability anisotropy |
| CN206410979U (en) * | 2017-01-25 | 2017-08-15 | 重庆地质矿产研究院 | Core holder for simulating hydraulic fracturing and permeability test |
| CN107202875A (en) * | 2017-04-25 | 2017-09-26 | 中国石油天然气股份有限公司 | System and method for determining influence of gas to be measured on stratum rock |
| US20190025169A1 (en) * | 2017-07-19 | 2019-01-24 | China University Of Petroleum-Beijing (Cupb) | Supercritical carbon dioxide fracturing core holder under the influence of pore pressure saturation |
| CN111323358A (en) * | 2020-04-14 | 2020-06-23 | 中国石油天然气集团有限公司 | Full-diameter shale core bedding seam drainage holder |
| CN111337411A (en) * | 2020-04-14 | 2020-06-26 | 中国石油天然气集团有限公司 | Method and device for testing radial permeability of full-diameter shale |
-
2020
- 2020-08-04 CN CN202010773779.6A patent/CN111948111B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2566263Y (en) * | 2002-01-29 | 2003-08-13 | 大庆油田有限责任公司 | Large diam rock gas permeability tester marker |
| CN106248555A (en) * | 2016-09-09 | 2016-12-21 | 中国石油大学(华东) | A kind of clamper measuring full-hole core permeability anisotropy |
| CN206410979U (en) * | 2017-01-25 | 2017-08-15 | 重庆地质矿产研究院 | Core holder for simulating hydraulic fracturing and permeability test |
| CN107202875A (en) * | 2017-04-25 | 2017-09-26 | 中国石油天然气股份有限公司 | System and method for determining influence of gas to be measured on stratum rock |
| US20190025169A1 (en) * | 2017-07-19 | 2019-01-24 | China University Of Petroleum-Beijing (Cupb) | Supercritical carbon dioxide fracturing core holder under the influence of pore pressure saturation |
| CN111323358A (en) * | 2020-04-14 | 2020-06-23 | 中国石油天然气集团有限公司 | Full-diameter shale core bedding seam drainage holder |
| CN111337411A (en) * | 2020-04-14 | 2020-06-26 | 中国石油天然气集团有限公司 | Method and device for testing radial permeability of full-diameter shale |
Non-Patent Citations (1)
| Title |
|---|
| 杨明杰等: "渗透率测试标样标定器的研制", 《石油工业技术监督》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903566A (en) * | 2021-03-02 | 2021-06-04 | 东北石油大学 | Full-diameter core radial permeability test tool |
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| CN111948111B (en) | 2024-06-04 |
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