CN201908652U - Heterogeneous multilayered core holder - Google Patents
Heterogeneous multilayered core holder Download PDFInfo
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- CN201908652U CN201908652U CN2010206810531U CN201020681053U CN201908652U CN 201908652 U CN201908652 U CN 201908652U CN 2010206810531 U CN2010206810531 U CN 2010206810531U CN 201020681053 U CN201020681053 U CN 201020681053U CN 201908652 U CN201908652 U CN 201908652U
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Abstract
The utility model relates to a heterogeneous multilayered core holder. A rubber barrel is placed in a shell, a multilayered core model is located in a cavity in the rubber barrel, a left core ejector and a right core ejector are ejected at two ends of the multilayered core model, a core container for containing the multilayered core model is formed among the inner wall of the rubber barrel, the left core ejector and the right core ejector, a left fixing sleeve and a right fixing sleeve are respectively sleeved on the left core ejector and the right core ejector, peripheries of the left fixing sleeve and the right fixing sleeve are connected with two ends of the shell via axial confining pressure sealing rings, a closed annular confining pressure space is formed among the outer wall of the rubber barrel, the left fixing sleeve, the right fixing sleeve and the inner wall of the shell, a liquid inlet arranged in the left core ejector is communicated with the core container, and a liquid outlet arranged in the right core ejector is communicated with the core container. The heterogeneous multilayered core holder realizes intra-layer heterogeneous oil deposit layered measurement, and can accurately simulate and test change law of intra-layer heterogeneous water flooding in commingled water injection layer mining and interlayer fluid channeling.
Description
Technical field
The utility model relates to a kind of simulation oil field and closes notes separate zone production experimental rig, is specifically related to a kind of heterogeneous body multiple-lay core gripper.
Background technology
In oil field development, reservoir heterogeneity is one of key factor that influences oil field development, especially merge under the situation of water filling at oil reservoir, reservoir heterogeneity not only makes the core intersection sweep efficiency reduce, and the oil displacement efficiency of each oil reservoir in the water filling series of strata produced bigger influence, reduce ultimate recovery.Therefore, understand the Changing Pattern of non-homogeneous pay oil displacement efficiency in the injecting process, provide theoretical foundation for adjustment exploitation measure, raising development effectiveness.
About heterogeneous research, be divided in the layer and the research of interlayer heterogeneous body at present, the heterogeneous research method of interlayer is simple, adopts a plurality of rock cores in parallel more, and clamper is relative simple with metering.Research about in-layer heterogeneity is fewer, and present method is artificial core to be pressed into a multilayered model use epoxy gluing as heterogeneous body system in the simulation layer.Another kind method is to be pressed into a multilayered model with artificial core, carries out displacement test in core holding unit, with the displacement of reservoir oil rule of heterogeneous body system in the research layer.Its shortcoming is that existing core holding unit has an inlet and a liquid outlet, can only measure the variation of the whole oil displacement efficiency of multilayer rock core model in the injecting process, and can't realize stratified stoichiometric, can not observe the crossflow phenomenon.And can only measure degree of porosity, permeability and the oil saturation of whole model, can't measure the parameter of each permeable formation.Thereby can't realize closing the evaluation of annotating each oil reservoir oil displacement efficiency in the separate zone production.Can not simulate burden pressure with epoxy gluing as heterogeneous body system in the simulation layer in addition, these all are the technical problems that needs to be resolved hurrily in heterogeneous research in the layer.
The utility model content
The purpose of this utility model provides a kind of core holding unit that can accurately measure water drive oil Changing Pattern in the heterosphere.
For achieving the above object, technical scheme of the present invention is as follows:
Heterogeneous body multiple-lay core gripper described in the utility model, by shell, rubber tube, top, a rock core left side, the right top of rock core, left fixed muffle, right fixed muffle, left fastening sleeve, right fastening sleeve and fixed support constitute;
Stainless steel casing is cylindric, and rubber tube places enclosure, with the shell concentric; Multilayer rock core model is arranged in the rubber tube internal cavity; Top, a rock core left side, the right top of rock core is removably replaced in rubber tube, the two ends of multilayer rock core model, its shape and size conform to the rubber tube inwall, form the rock core room that holds multilayer rock core model between the inwall of rubber tube and top, a rock core left side and the right top of rock core; Left side fixed muffle and right fixed muffle are set in respectively on the right top of top, a rock core left side and rock core, and left fixed muffle is connected by axial confined pressure sealing ring with the shell two ends with right fixed muffle periphery; The rubber tube outer wall forms an airtight annular confined pressure space between left fixed muffle and right fixed muffle and the outer casing inner wall; Fastening sleeve in a left side and right fastening sleeve are set in respectively on top, a rock core left side and the right top of rock core, are positioned at left fixed muffle and the right fixed muffle outside; Shell is provided with confined pressure interface, confined pressure steam vent; Be provided with inlet in the top, a rock core left side and be communicated with the rock core room, be provided with the rock core steam vent and be communicated with the rock core room; Rock core is provided with middle level liquid outlet, upper strata liquid outlet, lower floor's liquid outlet in the right top, be communicated with the rock core room, each liquid outlet is aimed at one deck rock core model respectively, at the seam crossing between corresponding adjacent two layers rock core model on the right top of rock core bar shaped liquid outlet sealing mat is set; Fixed support is positioned at the shell below.
This multilayer rock core model is combined by a plurality of natural or artificial individual layer rock cores with different permeabilities.
Aforesaid heterogeneous body multiple-lay core gripper, wherein, each individual layer rock core can be the identical cuboid rock core of shape.
Aforesaid heterogeneous body multiple-lay core gripper, wherein, this rubber tube outside can be cube, and inside has the cuboid cavity to hold the cuboid rock core, and its two ends have circular interface.
Described heterogeneous body multiple-lay core gripper is provided with the film of isolating profit on the adjacent two layers rock core contact surface of its multilayer rock core model.
Heterogeneous body multiple-lay core gripper as described is characterized in that, described multilayer rock core model can substitute with individual layer homogeneous rock core.
Aforesaid non-homogeneous model pilot system, wherein, this individual layer rock core is cylindrical or rectangle.
Beneficial effect of the present invention is that (1) this core holding unit can adopt natural reservoir cores and apply confined pressure, has simulated the actual conditions of heterogeneous reservoir in the layer truly; (2) this core holding unit can make the liquid of each rock core layer of flowing through flow out from different outlets respectively by unique top design, has realized the layering measurement, can accurately reflect and close the Changing Pattern of annotating heterogeneous body water drive oil in the separate zone production middle level; (3) to have improved the bonding rock core of multilayer of non-homogeneous model in the tradition stratum be the independent assortment single-layer model to this core holding unit, and each individual layer parameter can obtain separately, and can flexible combination simulating multiple heterogeneous reservoir; (4) this core holding unit is changed into cube with the cylindric outer shape of tradition stratum rubber tube, and has reduced the thickness of barrel, more helps the rubber tube internal cavities is applied confined pressure; (5) can be used in of this core holding unit measured non-homogeneous model in the layer; Simultaneously, only need the film of isolating profit is set between adjacent multilayer rock core model, can be used for measuring the interlayer non-homogeneous model, simplified the testing arrangement of a plurality of core holding unit parallel connections in the conventional method.
Description of drawings
Fig. 1 is the structural representation of heterogeneous body multiple-lay core gripper;
Fig. 2 is the sectional view of A-A among Fig. 1;
Fig. 3 is the sectional view of B-B among Fig. 1;
Wherein: 1, rock core steam vent 2, top, a rock core left side 3, left fastening sleeve 4, axial confined pressure sealing ring 5, inlet 6, left fixed muffle 7, shell 8, rubber tube 9, confined pressure steam vent 10, multilayer rock core model 11, fixed support 12, annular confined pressure space 13, confined pressure interface 14, right fixed muffle 15, the right top 16 of rock core, middle level fluid 17, upper strata liquid outlet 18, liquid outlet sealing mat 19, right fastening sleeve 20, lower floor's liquid outlet
The specific embodiment
The heterogeneous body multiple-lay core gripper:
Be used for the heterogeneous body multiple-lay core gripper by shell 7, rubber tube 8, top, a rock core left side 2, the right top 15 of rock core, left fixed muffle 6, right fixed muffle 14, left fastening sleeve 3, right fastening sleeve 19 and fixed support 11 constitute;
Stainless steel casing 7 is cylindric, and rubber tube 8 places shell 7 inside, with shell 7 concentrics; Multilayer rock core model 10 is arranged in rubber tube 8 internal cavities; Top, a rock core left side 2, the right top 15 of rock core is removably replaced in rubber tube 8, the two ends of multilayer rock core model 10, its shape and size conform to rubber tube 8 inwalls, form the rock core room that holds multilayer rock core model 10 between the inwall of rubber tube 8 and top 2, a rock core left side and the right top 15 of rock core; Left side fixed muffle 6 and right fixed muffle 14 are set in respectively on the right top 15 of top 2, a rock core left side and rock core, and left fixed muffle 6 is connected by axial confined pressure sealing ring 4 with shell 7 two ends with right fixed muffle 14 peripheries; Rubber tube 8 outer walls form an airtight annular confined pressure space 12 between left fixed muffle 6 and right fixed muffle 14 and shell 7 inwalls; Fastening sleeve 3 in a left side and right fastening sleeve 19 are set in respectively on top 2, a rock core left side and the right top 15 of rock core, are positioned at the left fixed muffle 6 and right fixed muffle 14 outsides; Shell 7 is provided with that confined pressure connects 13, confined pressure steam vent 9 and annular confined pressure space 12 and system connectivity; Be provided with inlet 5 in the top, a rock core left side 2 and be communicated with displacement system and rock core room, be provided with rock core steam vent 1 and be communicated with rock core room and ambient atmosphere; Rock core is provided with middle level liquid outlet 16, upper strata liquid outlet 17, lower floor's liquid outlet 20 in the right top 15, be communicated with rock core room and metering system, each liquid outlet is aimed at one deck rock core model respectively, at the seam crossing between corresponding adjacent two layers rock core model on the right top 15 of rock core bar shaped liquid outlet sealing mat 18 is set, so that flow out from the corresponding liquid outlet of each layer by the outflow liquid of every layer of rock core model; Fixed support 11 is positioned at shell 7 belows.
Non-homogeneous model oil-water displacement efficiency evaluation experimental:
At first get a plurality of natural reservoir cores that pick up from different depth, make the individual layer rock core model of same size.Measure the degree of porosity and the air permeability of each individual layer rock core model respectively; With the saturated formation water of each individual layer rock core, measure water phase permeability respectively; Respectively each individual layer rock core is carried out oily expelling water subsequently, reach the irreducible water saturation of measuring the effective permeability of oil phase behind the irreducible water state and calculating each individual layer rock core.Each layer rock core that will contain irreducible water arranged the rock core room of putting into the heterogeneous body multiple-lay core gripper according to the anti-rhythm; Fixedly upper and lower top of the rock core of core holding unit and upper and lower fixed muffle.The confined pressure interface is connected on the confined pressure pump, starts the confined pressure pump and add confined pressure 0～50MPa.With the speed of 0～10ml/min rock core is carried out the water drive oil operation, the displacement pressure reduction at the cumulative oil production when writing down every layer water breakthrough time, water breakthrough, cumulative liquid production, rock core two ends.Composite water cut reaches at 99.95% o'clock and finishes experiment.Draw rock core model WATER FLOODING CHARACTERISTIC CURVE according to record data, and calculate the coefficient of variation, the coefficient of advancing by leaps and bounds, permeability grade and oil displacement efficiency.
Claims (3)
1. heterogeneous body multiple-lay core gripper, by shell, rubber tube, top, a rock core left side, the right top of rock core, left fixed muffle, right fixed muffle, left fastening sleeve, right fastening sleeve and fixed support constitute; It is characterized in that:
Shell is cylindric, and rubber tube places enclosure, with the shell concentric; Multilayer rock core model is arranged in the rubber tube internal cavity; Top, a rock core left side, the right top of rock core is removably replaced in rubber tube, the two ends of multilayer rock core model, its shape and size conform to the rubber tube inwall, form the rock core room that holds multilayer rock core model between the inwall of rubber tube and top, a rock core left side and the right top of rock core; Left side fixed muffle and right fixed muffle are set in respectively on the right top of top, a rock core left side and rock core, and left fixed muffle is connected by axial confined pressure sealing ring with the shell two ends with right fixed muffle periphery; The rubber tube outer wall forms an airtight annular confined pressure space between left fixed muffle and right fixed muffle and the outer casing inner wall; Fastening sleeve in a left side and right fastening sleeve are set in respectively on top, a rock core left side and the right top of rock core, are positioned at left fixed muffle and the right fixed muffle outside; Shell is provided with confined pressure interface, confined pressure steam vent; Be provided with inlet in the top, a rock core left side and be communicated with the rock core room, be provided with the rock core steam vent and be communicated with the rock core room; Rock core is provided with middle level liquid outlet, upper strata liquid outlet, lower floor's liquid outlet in the right top, be communicated with the rock core room, each liquid outlet is aimed at one deck rock core model respectively, at the seam crossing between corresponding adjacent two layers rock core model on the right top of rock core bar shaped liquid outlet sealing mat is set; Fixed support is positioned at the shell below.
2. heterogeneous body multiple-lay core gripper according to claim 1 is characterized in that: described rubber tube is outside to be cube, and inside has the cuboid cavity, and its two ends are circular interface.
3. heterogeneous body multiple-lay core gripper according to claim 1 is characterized in that: the film of isolating profit is set on the adjacent two layers rock core contact surface of described multilayer rock core model.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206810531U CN201908652U (en) | 2010-12-17 | 2010-12-17 | Heterogeneous multilayered core holder |
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| CN2010206810531U CN201908652U (en) | 2010-12-17 | 2010-12-17 | Heterogeneous multilayered core holder |
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| CN201908652U true CN201908652U (en) | 2011-07-27 |
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| CN2010206810531U Expired - Lifetime CN201908652U (en) | 2010-12-17 | 2010-12-17 | Heterogeneous multilayered core holder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573264A (en) * | 2013-11-19 | 2014-02-12 | 中国石油大学(华东) | Heterogeneous reservoir water injection commingling interlayer disturbance simulation system and detection method |
| CN103954731A (en) * | 2013-08-02 | 2014-07-30 | 西南石油大学 | Device for simulating influence of dry layer on oil displacement efficiency in water injection process |
| CN106522931A (en) * | 2015-09-14 | 2017-03-22 | 中国石油化工股份有限公司 | Injected water damage evaluation method under simulated stratum condition |
| CN110609131A (en) * | 2019-10-12 | 2019-12-24 | 中国石油大学(北京) | Core holder |
| CN107100616B (en) * | 2017-04-18 | 2023-10-10 | 中国石油大学(北京) | Compact heterogeneous reservoir model saturated crude oil device |
-
2010
- 2010-12-17 CN CN2010206810531U patent/CN201908652U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954731A (en) * | 2013-08-02 | 2014-07-30 | 西南石油大学 | Device for simulating influence of dry layer on oil displacement efficiency in water injection process |
| CN103573264A (en) * | 2013-11-19 | 2014-02-12 | 中国石油大学(华东) | Heterogeneous reservoir water injection commingling interlayer disturbance simulation system and detection method |
| CN103573264B (en) * | 2013-11-19 | 2016-06-08 | 中国石油大学(华东) | Heterogeneous reservoir water filling is closed and is adopted interlayer interference analog systems and detection method |
| CN106522931A (en) * | 2015-09-14 | 2017-03-22 | 中国石油化工股份有限公司 | Injected water damage evaluation method under simulated stratum condition |
| CN107100616B (en) * | 2017-04-18 | 2023-10-10 | 中国石油大学(北京) | Compact heterogeneous reservoir model saturated crude oil device |
| CN110609131A (en) * | 2019-10-12 | 2019-12-24 | 中国石油大学(北京) | Core holder |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20110727 |
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| CX01 | Expiry of patent term |