CN110658038A - Rock core manufacturing device and method capable of simulating inclined stratum - Google Patents
Rock core manufacturing device and method capable of simulating inclined stratum Download PDFInfo
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- CN110658038A CN110658038A CN201910916363.2A CN201910916363A CN110658038A CN 110658038 A CN110658038 A CN 110658038A CN 201910916363 A CN201910916363 A CN 201910916363A CN 110658038 A CN110658038 A CN 110658038A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
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Abstract
The invention discloses a rock core manufacturing device and method capable of simulating an inclined stratum, and belongs to the technical field of rock mechanics in petroleum engineering. The device comprises a wedge-shaped combined die, a vibration base, a controllable compaction system and a computer monitoring system. The device and the method can be used for processing the rock core capable of simulating the inclined stratum, firstly, the rock core material is filled by a graded filling method through the wedge-shaped combined die, the wedge-shaped combined die is pressurized through the controllable compaction system, the filling material is uniformly vibrated and compacted through the vibration base, and the applied pressure and vibration strength are controlled through the computer monitoring system, so that the rock core capable of simulating the inclined stratum is processed and manufactured.
Description
Technical Field
The invention relates to the field related to rock mechanics in petroleum engineering, in particular to a core manufacturing device and method capable of simulating inclined strata.
Background
The research on the influence of the stratigraphic dip angle on the rock mechanics characteristics is an important subject, but due to the special and complex stratigraphic environment and the influence of factors such as large difficulty and large consumption of field measurement, the analysis on the influence of the stratigraphic dip angle on the rock mechanics characteristics is difficult to be carried out comprehensively, and in addition, no rock core capable of simulating an inclined stratum is available in a rock core mechanics test, so that the influence of the stratigraphic dip angle on the rock mechanics is difficult to obtain.
In order to solve the problems, the device improves the existing core processing and manufacturing device, so that the device can process common cores meeting daily experiments of students and cores capable of simulating inclined stratums for students to study the influence of rock stratum inclination angles on rock mechanical characteristics.
Disclosure of Invention
The invention aims to solve the problem that the existing rock core making device cannot process a rock core capable of simulating an inclined stratum, and provides a rock core making device and a rock core making method capable of processing and making the rock core capable of simulating the inclined stratum.
In order to meet the purpose, the invention adopts the following technical scheme:
a rock core manufacturing device capable of simulating an inclined stratum is characterized by comprising a wedge-shaped combined die, a vibration base, a controllable compaction system and a computer monitoring system;
the wedge-shaped combined die consists of a first-stage die, a second-stage die, a third-stage die, a fourth-stage die and an edge positioning bolt;
the vibration base is composed of a base plate, supporting legs and a vibration motor;
the controllable compaction system consists of a lifting bracket, a pressure output device, a pressure rod, a pressure plate and a pressure sensor;
the computer monitoring system consists of a computer and a cable.
The wedge-shaped combined die is formed by assembling a first-stage die, a second-stage die, a third-stage die and a fourth-stage die from bottom to top, wherein the dies are inclined hollow cylinders and have the same inner diameter and outer diameter, the dies at all stages are fixedly connected through edge positioning pins, and the edge positioning pins are fixed at the connection positions of the dies at all stages at 90 degrees with each other.
The lower end of the first-stage die is fixed with the base through the bolt, the upper surface of the first-stage die and the horizontal plane form a certain included angle, the connecting surface of the first-stage die and the second-stage die, the connecting surface of the second-stage die and the third-stage die and the connecting surface of the third-stage die and the fourth-stage die form a certain included angle with the horizontal plane, and the included angle can simulate the true rock stratum inclination angle.
The rock core manufacturing device capable of simulating the inclined stratum is characterized in that the lower end of a liftable support is fixed on a base through a bolt, a pressure output device is fixed at the upper end of the liftable support and connected with a pressure plate through a pressure rod, a pressure sensing piece is attached to the surface of the pressure rod, and the diameter of the pressure plate is equal to the inner diameter of a wedge-shaped mold.
The rock core manufacturing device capable of simulating the inclined stratum is characterized in that a base plate is supported by four supporting legs which are perpendicular to each other, a vibration motor is fixed in the center of the lower end of the base plate, and the vibration strength of the vibration motor can be adjusted.
The rock core manufacturing device capable of simulating the inclined stratum is characterized in that a computer can control the vibration strength of a vibration motor and the output pressure of a pressure output device through a cable, and the operation condition of the device can be controlled and monitored at any time in the operation process of the device.
The method for processing the rock core capable of simulating the inclined stratum by using the device comprises the following steps:
step 1: weighing the filling materials required by the first-stage mold according to a proportion, uniformly stirring, and sequentially preparing the filling materials required by the second-stage mold, the third-stage mold and the fourth-stage mold according to the first-stage step;
step 2: filling prepared first-stage mold filling materials into a first-stage mold, scraping the filling surface along the cross section by using a scraping blade after the filling material is filled, starting a vibration motor to uniformly vibrate and compact the filling material, standing for a moment, adding a binder on the surface of the first-stage mold filling material so as to facilitate the connection and fastening of all stages of filling materials, fixing a second-stage mold onto the first-stage mold by using a positioning bolt, continuing to fill the second-stage mold, wherein the filling method is similar to that of the first-stage mold, and sequentially filling a third-stage mold and a fourth-stage mold according to the steps until all stages of molds are filled completely;
and step 3: starting a vibration motor to vibrate and compact the filling material in the mold, then starting a pressure output device, pressurizing the assembled mold through a pressure plate, adjusting the pressure through a pressure monitor, and releasing the pressure after loading for 2-3 days;
and 4, step 4: after pressure relief, standing for 24 hours, sequentially disassembling the positioning bolts from top to bottom, sequentially disassembling the die, and taking out the prepared rock core for experimental research.
The invention has the following advantages:
(1) compared with the prior art, the device is simple to operate, and can be used for manufacturing common cores and cores capable of simulating inclined strata.
(2) The output pressure of the pressure output device of the device can be adjusted and controlled through the pressure monitor, the pressure can be monitored in real time, and overlarge or undersize output pressure is avoided.
Drawings
FIG. 1 is a schematic diagram of the structural composition of the device of the present invention.
FIG. 2 is a schematic view of the wedge-shaped segmented mold assembly of the present invention.
Fig. 3 is an enlarged view of a portion of the retaining latch of the present invention.
Fig. 4 is a top view of the inventive die.
FIG. 5 is a schematic representation of a core simulated stratigraphic attitude as processed by the present invention.
FIG. 6 is a graph of the effect of a core of the present invention on simulating a dipping formation.
Detailed Description
For the purpose of clearly understanding the technical features, objects and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
A core making device capable of simulating an inclined stratum is shown in figure 1 and comprises a wedge-shaped combined die, a vibration base, a controllable compaction system and a computer monitoring system;
as shown in figure 2, the wedge-shaped combined die consists of a first-stage die (5), a second-stage die (6), a 3 rd-stage die (7), a fourth-stage die (8) and an edge positioning bolt (13);
the vibration base is composed of a base plate (4), supporting legs (1) and a vibration motor (2);
the controllable compaction system consists of a lifting bracket (16), a pressure rod (10), a pressure output device (11), a pressure plate (9) and a pressure sensor (12);
the computer monitoring system is composed of a computer (15) and a cable (14).
As shown in figure 3, the wedge-shaped combined die is formed by assembling a first-stage die (5), a second-stage die (6), a third-stage die (7) and a fourth-stage die (8) from bottom to top, wherein each die is an inclined hollow cylinder and has the same inner diameter and outer diameter, the dies at all stages are fixedly connected through edge positioning bolts (13), and the edge positioning bolts (13) are mutually fixed at the joints of the dies at all stages at 90 degrees.
Wedge assembling die in first order mould (5) lower extreme pass through bolt (3) and bed plate (4) are fixed, first order mould (5), second level mould (6), the wedge face of third level mould (7) and fourth level mould all becomes certain contained angle with the horizontal plane, as shown in figure 5, use first order mould as an example, the intersection line of mould wedge face and horizontal plane is stratum trend line AB, the trend line vertical direction is connected the ray that the face downdip direction was drawn forth and is the tilt line OD, the position of the projection line instruction of tilt line on the horizontal plane is called the rock stratum tendency, the contained angle of wedge face and horizontal plane is stratum inclination alpha 1.
Liftable formula support (16) lower extreme pass through the bolt fastening on bed plate (4), pressure follower (11) are fixed in the upper end of liftable formula support (16), pressure follower passes through depression bar (10) and is connected with clamp plate (9), pressure sensor (12) are pasted on the surface of depression bar (10), pressure sensor can survey the size of output pressure, the diameter of clamp plate (9) equals with the internal diameter of wedge mould.
The base plate (4) is supported through four mutually perpendicular's supporting legs (1), and vibrating motor (2) are fixed in the lower extreme center of base plate (4), and vibrating motor (2)'s shock intensity is adjustable.
The core making device capable of simulating the inclined stratum is characterized in that a computer (15) can control and monitor the output pressure of a pressure output device (11) through a cable (14), and the operation condition of the device can be controlled and monitored at any time in the operation process of the device.
The method for processing the rock core capable of simulating the inclined stratum by using the device comprises the following steps:
step 1: weighing the filling materials required by the first-stage mold according to a proportion, uniformly stirring, and sequentially preparing the filling materials required by the second-stage mold, the third-stage mold and the fourth-stage mold according to the first-stage step;
step 2: filling prepared first-stage mold filling materials into a first-stage mold (5), scraping the filling surface along the cross section by using a scraping blade after the filling is completed, starting a vibration motor (2) to uniformly vibrate and compact the filling materials, standing for 1 hour, adding a binder on the surface of the filling materials of the first-stage mold (5) so as to facilitate the connection and fastening of the filling materials at all stages, fixing a second-stage mold (6) onto the first-stage mold (5) by using a positioning bolt (13), continuing to fill the second-stage mold (6), wherein the filling method is similar to that of the first-stage mold (5), and sequentially filling a third-stage mold (7) and a fourth-stage mold (8) according to the above steps until all stages of molds are completely filled;
and step 3: starting a vibration motor (2) to vibrate and compact the filling material in the mold, then starting a pressure output device (11), pressurizing the core material assembled in the mold by the pressure output device through a pressure plate (9), adjusting the pressure through a computer (15), and releasing the pressure after loading for 2-3 days; after pressure relief, the device is placed still for 24 hours, the positioning bolts (14) are sequentially detached from top to bottom, the mold is sequentially detached, and the prepared rock core simulating the inclined stratum is taken out, wherein the effect graph of the rock core is shown in fig. 6.
Claims (5)
1. A rock core manufacturing device capable of simulating an inclined stratum is characterized by comprising a wedge-shaped combined die, a vibration base, a controllable compaction system and a computer monitoring system;
the wedge-shaped combined die consists of a first-stage die (5), a second-stage die (6), a third-stage die (7), a fourth-stage die (8) and an edge positioning bolt (13); the wedge-shaped combined die is formed by assembling a first-stage die (5), a second-stage die (6), a third-stage die (7) and a fourth-stage die (8) from bottom to top, wherein each stage of die is an inclined hollow cylinder and has the same inner diameter and outer diameter, the dies are fixedly connected through edge positioning bolts (13), and the edge positioning bolts (13) are fixed at the connection parts of the dies at different stages at an angle of 90 degrees in the circumferential direction; the lower end of the first-stage mold (5) is fixed with the base plate (4) through a bolt (3), wedge surfaces of the first-stage mold (5), the second-stage mold (6), the third-stage mold (7) and the fourth-stage mold (8) form a certain included angle with the horizontal plane, and the included angle ranges from 0 degree to 30 degrees;
the vibration base is composed of a base plate (4), supporting legs (1) and a vibration motor (2);
the controllable compaction system consists of a lifting bracket (16), a pressure rod (10), a pressure output device (11), a pressure plate (9) and a pressure sensor (12);
the computer monitoring system is composed of a computer (15) and a cable (14).
2. The core making device capable of simulating inclined strata according to claim 1, wherein the lower end of the liftable support (16) is fixed on the base plate (4) through bolts, the pressure output device (11) is fixed at the upper end of the liftable support (16), the pressure output device (11) is connected with the pressure plate (9) through a pressure rod (10), the surface of the pressure rod (10) is attached with a pressure sensor (12), the pressure sensor can measure the output pressure, and the diameter of the pressure plate (9) is equal to the inner diameter of the wedge-shaped mold.
3. The core making device capable of simulating inclined formations according to claim 1, characterized in that the base plate (4) is supported by four supporting legs (1) which are perpendicular to each other, the vibration motor (2) is fixed at the center of the lower end of the base plate (4), and the vibration strength of the vibration motor (2) is adjustable.
4. Core making apparatus capable of simulating inclined formations according to claim 1, characterized in that the computer (15) is capable of controlling and monitoring the magnitude of the pressure output by the pressure output device (11) via the cable (14), and the operation of the apparatus can be controlled and monitored at any time during the operation of the apparatus.
5. The method for core making by using the core making device capable of simulating the inclined stratum as claimed in claim 1, is characterized by comprising the following steps:
step 1: weighing the filling materials required by the first-stage mold according to a proportion, uniformly stirring, and sequentially preparing the filling materials required by the second-stage mold, the third-stage mold and the fourth-stage mold according to the first-stage step;
step 2: filling prepared first-stage mold filling materials into a first-stage mold (5), scraping the filling surface along the cross section by using a scraping blade after the filling is completed, starting a vibration motor (2) to vibrate and compact the filling materials, standing for 1 hour, adding a binder on the surface of the filling materials of the first-stage mold (5) so as to facilitate the connection and fastening of all stages of filling materials, fixing a second-stage mold (6) onto the first-stage mold (5) by using an edge positioning bolt (13), continuing to fill the second-stage mold (6), wherein the filling method is similar to that of the first-stage mold (5), and sequentially filling a third-stage mold (7) and a fourth-stage mold (8) according to the above steps until all stages of molds are filled completely;
and step 3: starting a vibration motor (2) to vibrate and compact all filled materials in the mold, then starting a pressure output device (11), pressurizing the core materials assembled in the mold by the pressure output device (11) through a pressure plate (9), adjusting the pressure through a computer (15), and releasing the pressure after loading for 2-3 days;
and 4, step 4: after pressure relief, the device is kept stand for about 24 hours, the positioning bolts (14) are sequentially disassembled from top to bottom, the die is sequentially disassembled, and the prepared rock core simulating the inclined stratum is taken out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910916363.2A CN110658038A (en) | 2019-11-10 | 2019-11-10 | Rock core manufacturing device and method capable of simulating inclined stratum |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910916363.2A CN110658038A (en) | 2019-11-10 | 2019-11-10 | Rock core manufacturing device and method capable of simulating inclined stratum |
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| CN201910916363.2A Pending CN110658038A (en) | 2019-11-10 | 2019-11-10 | Rock core manufacturing device and method capable of simulating inclined stratum |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113813839A (en) * | 2021-02-24 | 2021-12-21 | 晋江华宝石业有限公司 | Quick grading method and grading device for square stock |
| CN113984486A (en) * | 2021-10-20 | 2022-01-28 | 中海石油(中国)有限公司 | Preparation method of loose sandstone fractured rock sample with preset open hole |
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| CN110057639A (en) * | 2019-04-29 | 2019-07-26 | 河海大学 | A kind of sampling die and its method for making sample for simulating the rock mass of inter-laminar dislocation band containing multilayer |
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- 2019-11-10 CN CN201910916363.2A patent/CN110658038A/en active Pending
Patent Citations (6)
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| CN113813839A (en) * | 2021-02-24 | 2021-12-21 | 晋江华宝石业有限公司 | Quick grading method and grading device for square stock |
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