CN204536080U - A kind of rock core makes seam device - Google Patents
A kind of rock core makes seam device Download PDFInfo
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- CN204536080U CN204536080U CN201520261526.5U CN201520261526U CN204536080U CN 204536080 U CN204536080 U CN 204536080U CN 201520261526 U CN201520261526 U CN 201520261526U CN 204536080 U CN204536080 U CN 204536080U
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- rock core
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- core
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Abstract
The utility model relates to a kind of rock core and makes seam device, particularly relates to one and makes seam device for pressure break rock core in oilfield exploitation procedure.Comprise main frame, manual pressure device, horizontal core holding unit, longitudinal core holding unit, draw point, top pressue device, horizontal rock core clamping rubber sleeve, longitudinal rock core clamping rubber sleeve, described manual pressure device is positioned in main frame, described longitudinal core holding unit is connected with manual pressure device, described longitudinal rock core clamping rubber sleeve is positioned in the cylindrical hole of longitudinal core holding unit, described draw point is positioned over the centre of longitudinal rock core clamping rubber sleeve upper surface, described top pressue device is connected with main frame, described horizontal core holding unit is connected with manual pressure device, described horizontal rock core clamping rubber sleeve is connected with horizontal core holding unit.Beneficial effect: seam can be made for Sandstone Cores and shale core, and can control critical eigenvalue width and length as requested, can the horizontal and vertical list seam of crack initiation with stitch more.
Description
Technical field
The utility model relates to a kind of rock core and makes seam device, particularly relates to one and makes seam device for pressure break rock core in oilfield exploitation procedure.
Background technology
In recent years, along with constantly carrying out of oil-gas exploration and development, the ratio shared by Low Permeability Oil/gas reserves constantly increases, and low permeability oil and gas field will be the Main Resources in significant period of time, increasing the storage produced.The rock core of low-permeability oil deposit makes because permeability is low to need very high displacement pressure and confined pressure in indoor displacement process, but can by rock core pressure break after confined pressure exceedes the parting pressure of rock core.Secondly such reservoir due to density high, rock core displacement test success ratio is very low.Therefore, pressure break is gordian technique and the basic means of low permeability oil and gas field exploitation.
Often need to carry out artificial reconstructed to rock core in lab simulation process, especially in the reservoir thermal energy storage process of acid fracturing well and evaluate natural fracture or artificial fracturing in various entry well fluid formation and produce in fracture permeability injury process, all need to make seam to synthetic core or natural core, then just can carry out next step displacement test safely and effectively.Usually can be increased by 500 by core permeability after pressure break or larger, for fine and close rock and shale, its perviousness mainly relies on network of fracture therebetween, and after pressure break, anatonosis effect is more obvious.
Through inquiring about current domestic existing rock core device for modifying similarly, there is the Pneumatic stone core splitter of Daqing oil field utility model, if this is rived, rock core is rived along axial plane by external force by owner energetically, its utility model object is that solution labour intensity when riving rock core is large, poor stability, the problems such as whether rock core splitting surface is straight, therefore can not realize rock core man seam on this rives machine after, permeance property improves case study.
The rock core of Sinopec Group's development that also has similarly makes seam and rock core rupture stress pick-up unit, object carries out man seam to improve rock core permeance property to rock core, thus realize carrying out Oil in Super-low Permeability unconventional sandstone reservoir exploitation displacement test.This instrument is only to transform Sandstone Cores, and crack initiation crack only has longitudinal seam, and fracture make seam width cannot control.
It is exactly to can make seam for Sandstone Cores and shale core simultaneously that a kind of rock core of the utility model makes seam device, and draw point control critical eigenvalue width and the length of different thicknesses and length can be chosen as requested, and can the horizontal and vertical list seam of crack initiation with stitch more.
Utility model content
The purpose of this utility model is that providing a kind of makes seam device for pressure break rock core in oilfield exploitation procedure, by sandstone or shale core man seam, realizes, to the transformation of LOW PERMEABILITY RESERVOIR rock core, improving core permeability, for next step experiment is prepared.
For achieving the above object, a kind of rock core of the utility model make seam device concrete technical scheme as follows:
A kind of rock core makes seam device, comprise main frame, manual pressure device, horizontal core holding unit, longitudinal core holding unit, draw point, top pressue device, horizontal rock core clamping rubber sleeve, longitudinal rock core clamping rubber sleeve, described manual pressure device is positioned in main frame, described longitudinal core holding unit is connected with manual pressure device, described longitudinal rock core clamping rubber sleeve is positioned in the cylindrical hole of longitudinal core holding unit, described draw point is positioned over the centre of longitudinal rock core clamping rubber sleeve upper surface, described top pressue device is connected with main frame, and be placed in the top of draw point, described horizontal core holding unit is connected with manual pressure device, described horizontal rock core clamping rubber sleeve is connected with horizontal core holding unit.
It is corresponding that described horizontal core holding unit and horizontal rock core clamp rubber sleeve, and it is corresponding that described longitudinal core holding unit and longitudinal rock core clamp rubber sleeve, and it is peripheral that rubber sleeve is enclosed within corresponding core holding unit.
Described horizontal rock core clamping rubber sleeve is semi-circular tube, and internal diameter is 25mm, and external diameter is 29mm, and long is 50mm; Described longitudinal rock core clamping rubber sleeve is pipe, and internal diameter is 25mm, and external diameter is 29mm, and long is 50mm.
The long 50mm of described horizontal core holding unit, wide 50mm, high 50mm, semicolumn empty portions diameter is 25mm, long is 50mm, have a diameter to be 0.25mm bottom at semicolumn empty portions, the long groove for 50mm, described longitudinal core holding unit is semiclosed tubulose, internal diameter φ 29mm, dark 48mm, external diameter φ 50mm, high 60mm.
The material of described draw point is No. 45 Cr quenched and tempered steel, and size has φ 0.5mm × 1mm, φ 0.5mm × 2mm, φ 0.5mm × 4mm, φ 0.5mm × 8mm, φ 1.0mm × 1mm, φ 1.0mm × 2mm, φ 1.0mm × 4mm, φ 1.0mm × 8mm, totally 8 kinds of models.
Described manual pressure device pressure is greater than 10kN, and end face is cylindric, and diameter is 50mm.
Described main frame is rectangle frame.
Compared to existing technology, rock core of the present utility model make seam device there is following advantage:
1. success ratio is high, and this instrument meets oil field rock core and makes seam requirement, is repeatedly tested by more than 100 times, and rock core is made and is seamed into power more than 95%;
2. can transforming requirement according to rock core and choose different draw point, controlling making seam size, the crack of crack initiation different in width and length;
3. not only can the crack of crack initiation longitudinal direction, can also the crack of crack initiation transverse direction;
4. by can stitching by crack initiation list the horizontal and vertical pressurization respectively of rock core, also can the many seams of crack initiation.
Accompanying drawing explanation
Fig. 1: a kind of rock core of the utility model makes the structural representation of seam device crack initiation longitudinal crack;
Fig. 2: a kind of rock core of the utility model makes the structural representation of seam device crack initiation transverse crack;
Symbol description:
1. main frame, 2. manual pressure device, 3. horizontal core holding unit, 4. longitudinal core holding unit, 5. draw point, 6. top pressue device, 7. horizontal rock core clamping rubber sleeve, 8. longitudinal rock core clamping rubber sleeve.
Embodiment
Below in conjunction with accompanying drawing and example, the utility model is described in further detail:
As shown in Figure 1-2, a kind of rock core of the utility model makes seam device, comprise main frame (1), manual pressure device (2), horizontal core holding unit (3), longitudinal core holding unit (4), draw point (5), top pressue device (6), horizontal rock core clamping rubber sleeve (7), longitudinal rock core clamping rubber sleeve (8), described manual pressure device (2) is positioned in main frame (1), described longitudinal core holding unit (4) is connected with manual pressure device (2), described longitudinal rock core clamping rubber sleeve (8) is positioned in the cylindrical hole of longitudinal core holding unit (4), described draw point (5) is positioned over the centre of longitudinal rock core clamping rubber sleeve (8) upper surface, described top pressue device (6) is connected with main frame (1), and be placed in the top of draw point (5), described horizontal core holding unit (3) is connected with manual pressure device (2), described horizontal rock core clamping rubber sleeve (7) is connected with horizontal core holding unit (3).
It is corresponding that described horizontal core holding unit (3) and horizontal rock core clamp rubber sleeve (7), it is corresponding that described longitudinal core holding unit (4) and longitudinal rock core clamp rubber sleeve (8), and it is peripheral that rubber sleeve is enclosed within corresponding core holding unit.
Described horizontal rock core clamping rubber sleeve (7) is semi-circular tube, and internal diameter is 25mm, and external diameter is 29mm, and long is 50mm; Described longitudinal rock core clamping rubber sleeve (8) is pipe, and internal diameter is 25mm, and external diameter is 29mm, and long is 50mm.
The long 50mm of described horizontal core holding unit (3), wide 50mm, high 50mm, semicolumn empty portions diameter is 25mm, long is 50mm, have a diameter to be 0.25mm bottom at semicolumn empty portions, the long groove for 50mm, described longitudinal core holding unit (4) is semiclosed tubulose, internal diameter φ 29mm, dark 48mm, external diameter φ 50mm, high 60mm.
The material of described draw point (5) is No. 45 Cr quenched and tempered steel, size has φ 0.5mm × 1mm, φ 0.5mm × 2mm, φ 0.5mm × 4mm, φ 0.5mm × 8mm, φ 1.0mm × 1mm, φ 1.0mm × 2mm, φ 1.0mm × 4mm, φ 1.0mm × 8mm, totally 8 kinds of models.
Described manual pressure device (2) pressure is greater than 10kN, and end face is cylindric, and diameter is 50mm.
Described main frame (1) is rectangle frame.
When the utility model uses, first, the rock core that carry out fracturing reform is processed into standard rock core φ 25mm × 50mm; Then, horizontal core holding unit (3) or longitudinal core holding unit (4) is chosen according to the seam position of making of pressure break rock core; Further, corresponding draw point (5) is chosen according to the size (anatonosis requires for length, width) of pressure-break; Further, rock core is put into corresponding horizontal core holding unit (3) or longitudinal core holding unit (4), regulate top pressue device (6), make itself and rock core close contact; Then manual pressure device (2) is used to be forced into rock core crack initiation; According to actual conditions and a crack requirement of pressure break, to rock core repeatedly pressure break, can know and meet the demands; Finally, take off rock core, carry out further experiment.In addition, easily split frangible feature for shale core, before pressure break, horizontal rock core clamping rubber sleeve (7) of layer or longitudinal rock core clamping rubber sleeve (8) can be added in rock core periphery.
Be illustrated the utility model by way of example above, but the utility model is not limited to above-mentioned specific embodiment, all any changes of doing based on the utility model or modification all belong to the claimed scope of the utility model.
Claims (7)
1. a rock core makes seam device, it is characterized in that: comprise main frame (1), manual pressure device (2), horizontal core holding unit (3), longitudinal core holding unit (4), draw point (5), top pressue device (6), horizontal rock core clamping rubber sleeve (7), longitudinal rock core clamping rubber sleeve (8), described manual pressure device (2) is positioned in main frame (1), described longitudinal core holding unit (4) is connected with manual pressure device (2), described longitudinal rock core clamping rubber sleeve (8) is positioned in the cylindrical hole of longitudinal core holding unit (4), described draw point (5) is positioned over the centre of longitudinal rock core clamping rubber sleeve (8) upper surface, described top pressue device (6) is connected with main frame (1), and be placed in the top of draw point (5), described horizontal core holding unit (3) is connected with manual pressure device (2), described horizontal rock core clamping rubber sleeve (7) is connected with horizontal core holding unit (3).
2. a kind of rock core according to claim 1 makes seam device, it is characterized in that: it is corresponding that described horizontal core holding unit (3) and horizontal rock core clamp rubber sleeve (7), it is corresponding that described longitudinal core holding unit (4) and longitudinal rock core clamp rubber sleeve (8), and it is peripheral that rubber sleeve is enclosed within corresponding core holding unit.
3. a kind of rock core according to claim 1 makes seam device, it is characterized in that: described horizontal rock core clamping rubber sleeve (7) is semi-circular tube, and internal diameter is 25mm, and external diameter is 29mm, and long is 50mm; Described longitudinal rock core clamping rubber sleeve (8) is pipe, and internal diameter is 25mm, and external diameter is 29mm, and long is 50mm.
4. a kind of rock core according to claim 1 makes seam device, it is characterized in that: the long 50mm of described horizontal core holding unit (3), wide 50mm, high 50mm, semicolumn empty portions diameter is 25mm, and long is 50mm, has a diameter to be 0.25mm bottom at semicolumn empty portions, the long groove for 50mm, described longitudinal core holding unit (4) is semiclosed tubulose, internal diameter φ 29mm, dark 48mm, external diameter φ 50mm, high 60mm.
5. a kind of rock core according to claim 1 makes seam device, it is characterized in that: the material of described draw point (5) is No. 45 Cr quenched and tempered steel.
6. a kind of rock core according to claim 1 makes seam device, it is characterized in that: described manual pressure device (2) pressure is greater than 10kN, and end face is cylindric, and diameter is 50mm.
7. a kind of rock core according to claim 1 makes seam device, it is characterized in that: described main frame (1) is rectangle frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261526.5U CN204536080U (en) | 2015-04-27 | 2015-04-27 | A kind of rock core makes seam device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261526.5U CN204536080U (en) | 2015-04-27 | 2015-04-27 | A kind of rock core makes seam device |
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| CN204536080U true CN204536080U (en) | 2015-08-05 |
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| CN201520261526.5U Expired - Fee Related CN204536080U (en) | 2015-04-27 | 2015-04-27 | A kind of rock core makes seam device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727465A (en) * | 2017-09-14 | 2018-02-23 | 中国石油大学(华东) | A kind of method and device that the artificial sand rock with reservoir architecture is made using calcarinate |
| CN107831057A (en) * | 2017-12-08 | 2018-03-23 | 中国石油天然气股份有限公司 | Indoor artificial seam making method for tight sandstone core |
| CN108362860A (en) * | 2018-02-08 | 2018-08-03 | 中国石油天然气股份有限公司 | Indoor testing method for tight sandstone steering fracturing feasibility |
| CN108801760A (en) * | 2017-05-03 | 2018-11-13 | 中国石油天然气股份有限公司 | Experimental method for rock acid fracturing influence strength failure |
-
2015
- 2015-04-27 CN CN201520261526.5U patent/CN204536080U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801760A (en) * | 2017-05-03 | 2018-11-13 | 中国石油天然气股份有限公司 | Experimental method for rock acid fracturing influence strength failure |
| CN107727465A (en) * | 2017-09-14 | 2018-02-23 | 中国石油大学(华东) | A kind of method and device that the artificial sand rock with reservoir architecture is made using calcarinate |
| CN107727465B (en) * | 2017-09-14 | 2020-02-11 | 中国石油大学(华东) | Method for manufacturing artificial sandstone with reservoir structure by using calcium carbonate cementation |
| CN107831057A (en) * | 2017-12-08 | 2018-03-23 | 中国石油天然气股份有限公司 | Indoor artificial seam making method for tight sandstone core |
| CN108362860A (en) * | 2018-02-08 | 2018-08-03 | 中国石油天然气股份有限公司 | Indoor testing method for tight sandstone steering fracturing feasibility |
| CN108362860B (en) * | 2018-02-08 | 2021-04-30 | 中国石油天然气股份有限公司 | Indoor testing method for tight sandstone steering fracturing feasibility |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20160427 |