CN203587418U - Crack maker for shearing rock core - Google Patents
Crack maker for shearing rock core Download PDFInfo
- Publication number
- CN203587418U CN203587418U CN201320802366.1U CN201320802366U CN203587418U CN 203587418 U CN203587418 U CN 203587418U CN 201320802366 U CN201320802366 U CN 201320802366U CN 203587418 U CN203587418 U CN 203587418U
- Authority
- CN
- China
- Prior art keywords
- rock core
- crack
- base
- shear knife
- maker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a crack maker for shearing a rock core, which solves the problem that an existing crack maker cannot be used for making shear cracks. The crack maker specifically comprises a base and a shear knife, wherein a penetrating passage is formed from the front to the back of a square body of the base; the two sides of the penetrating passage are of semi-cylindrical structures; a rectangular skylight is formed in the upper surface of the base; semicircular grooves are respectively formed in the left and right sides of a square main body of the shear knife; the shear knife is inserted through the skylight of the base; the semicircular groove in the left side of the shear knife is butted with the semi-cylindrical structure on the left side of the penetrating passage to form a first rock core chamber; meanwhile, the semicircular groove in the right side of the penetrating passage is also butted with the semi-cylindrical structure on the right side of the penetrating passage to form a second rock core chamber. By using the crack maker, shear cracks of the rock core can be made, so that a research on the rock core can be carried out in a more targeted way; meanwhile, the crack maker is simple in structure and convenient to operate.
Description
Technical field
The utility model relates to a kind of utensil that obtains rock core crack on oil field.
Background technology
Because natural fracture rock sample quantity is few, drill through crack rock core difficulty very large, very easily cause the fragmentation of rock core in drilling operation, success ratio is low, and natural fracture rock core very difficult virgin state of reproducing crack after experiencing repeatedly pressure process, therefore use man-made fracture rock core to carry out fundamental research.In order better to obtain rock core crack, by PetroChina Company Ltd., having developed patent name is a kind of rock core man made seam device (201220468487.2), this device adopts in the rock core mode that radially inwardly exert pressure simultaneously in two ends and obtains crack, although obtaining the difficulty in crack obviously reduces, but it is a kind of that the mode of exerting pressure of obtaining crack only has, in the time of can not meeting rock core and be subject to shearing force, rock core crack obtains.
Summary of the invention
The purpose of this utility model is to provide a kind of rock core shearing and makes seam device, uses this to make seam device and can obtain the crack producing when rock core is subject to shearing force, for rock core fundamental research provides abundanter data and data.
For achieving the above object, the technical solution adopted in the utility model is: a kind of rock core is sheared and made seam device, comprise base and shear knife, the body of described base is tetragonal body, before and after it, be formed through passage, the main body of through channel is rectangular structure, and the left and right sides of main body is the semicylinder structure that mirror image distributes each other, and the upper surface center of base has rectangle skylight; The main body of described shear knife is tetragonal body, and the left and right sides of main body has groove, and the vertical sectional shape of groove is semicircle; Above-mentioned shear knife inserts from the skylight of base, formation the first core chamber after semicylinder structure on the left of shear knife left side semi-circular recesses and through channel is involutory, right side semi-circular recesses and through channel right side semicylinder structure are also combined to form the second core chamber simultaneously.
Preferably this rock core is sheared to make on seam device several core chamber is also set in the same way, to carry out obtaining of more rock cores crack simultaneously.
Beneficial effect: that uses that the utility model provides makes seam device, can obtain the shearing crack of rock core, thereby more targetedly rock core be studied, and this apparatus structure is simple simultaneously, easy to operate.
Accompanying drawing explanation
Fig. 1 is that the utility model rock core is sheared the structural representation of making seam device.
Fig. 2 is that the utility model rock core is sheared the longitudinal sectional view of making seam device.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
By Fig. 1 in conjunction with shown in Fig. 2: a kind of rock core is sheared and is made seam device, comprise base 1 and shear knife 5, the body of described base 1 is tetragonal body, before and after it, be formed through passage 2, the main body of through channel 2 is rectangular structure, the main body both sides of rectangular structure are the semicylinder structures 3 that mirror image distributes each other, and the upper surface center of base 1 has rectangle skylight; The main body of described shear knife is tetragonal body, and the left and right sides of main body has groove 4, and the vertical sectional shape of groove 4 is semicircle; Above-mentioned shear knife 5 inserts from the skylight of base 1, formation the first core chamber after the semicylinder structure 3 on the left of shear knife left side semi-circular recesses 4 and through channel is involutory, built-in the first rock core 6, right side semi-circular recesses 4 is also combined to form the second core chamber, built-in the second rock core 7 with through channel right side semicylinder structure 3 simultaneously.
During use, rock core is put into respectively to first and second core chamber, makes the lithology of two rock cores identical as far as possible, guarantee stressed evenly, improve to make and be seamed into power.Then start pressing machine, the upper surface of shear knife is slowly pressurizeed, until pressure no longer sharply increases, rock core is radially being subject to a pair of conjugate pressure, and radially staggers, and generates shearing crack.
Claims (2)
1. a rock core is sheared and is made seam device, comprise base and shear knife, it is characterized in that: the body of described base is tetragonal body, before and after it, be formed through passage, the main body of through channel is rectangular structure, the both sides of main body are the semicylinder structures that mirror image distributes each other, and the upper surface center of base has rectangle skylight; The main body of described shear knife is tetragonal body, and the left and right sides of main body has groove, and the vertical sectional shape of groove is semicircle; Above-mentioned shear knife inserts from the skylight of base, formation the first core chamber after the semicylinder structure on the left of shear knife left side semi-circular recesses and through channel is involutory, the semicylinder structure on right side semi-circular recesses and through channel right side is also combined to form the second core chamber simultaneously.
2. rock core according to claim 1 is sheared and is made seam device, it is characterized in that: take the core chamber of the same manner setting is several.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802366.1U CN203587418U (en) | 2013-12-09 | 2013-12-09 | Crack maker for shearing rock core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802366.1U CN203587418U (en) | 2013-12-09 | 2013-12-09 | Crack maker for shearing rock core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587418U true CN203587418U (en) | 2014-05-07 |
Family
ID=50585321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320802366.1U Expired - Fee Related CN203587418U (en) | 2013-12-09 | 2013-12-09 | Crack maker for shearing rock core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203587418U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895562A (en) * | 2015-05-16 | 2015-09-09 | 东北石油大学 | Production device and method for simulating horizontal well shaft in transparent core |
| CN107907393A (en) * | 2017-11-16 | 2018-04-13 | 重庆大学 | A kind of mould for being used to make rock-like materials |
| CN112903396A (en) * | 2021-03-02 | 2021-06-04 | 东北石油大学 | Rock core grooving tool for fracture toughness experiment and grooving method thereof |
| CN113390770B (en) * | 2020-03-13 | 2023-04-25 | 中国石油天然气股份有限公司 | Device and method for evaluating damage of fracturing fluid to cracks of tight oil and gas reservoirs |
-
2013
- 2013-12-09 CN CN201320802366.1U patent/CN203587418U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895562A (en) * | 2015-05-16 | 2015-09-09 | 东北石油大学 | Production device and method for simulating horizontal well shaft in transparent core |
| CN104895562B (en) * | 2015-05-16 | 2017-02-22 | 东北石油大学 | Production device and method for simulating horizontal well shaft in transparent core |
| CN107907393A (en) * | 2017-11-16 | 2018-04-13 | 重庆大学 | A kind of mould for being used to make rock-like materials |
| CN113390770B (en) * | 2020-03-13 | 2023-04-25 | 中国石油天然气股份有限公司 | Device and method for evaluating damage of fracturing fluid to cracks of tight oil and gas reservoirs |
| CN112903396A (en) * | 2021-03-02 | 2021-06-04 | 东北石油大学 | Rock core grooving tool for fracture toughness experiment and grooving method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140507 Termination date: 20141209 |
|
| EXPY | Termination of patent right or utility model |