CN106483037A - A kind of device of real-time measurement rock water absorption - Google Patents

Abstract

The invention relates to a device for measuring the water absorption of various rock samples in real time in a seepage experiment, which solves the problem that the traditional method of measuring the water absorption of rocks cannot accurately reflect the water absorption and permeability characteristics of the rock itself, and cannot obtain continuous "water absorption - time""The problem with curves. The patent of the present invention provides a device for measuring the water absorption of rocks in real time. The device can measure the water absorption of rocks per unit time in real time, avoiding the error of measuring water absorption by drying the rocks, and making the measurement results more accurate. The technical solution adopted by the patent of the present invention to solve this technical problem is: the base is placed horizontally, the vertical pole stands on the side of the base, the pulley is fixed on the mobile support, the glass dish is placed on the base, and the rock specimen is suspended by iron wire On the top of the glass dish, just in contact with the water surface, the iron wire is wound on the pulley and connected with the weight, the weight is placed in the electronic scale tray, the electronic scale is connected to the computer through the signal line, and the electronic scale and the computer are both connected to the power supply. The device can continuously measure the weight increase of the rock specimen at different times.

Description

A device for real-time measurement of rock water absorption

Technical field

The invention relates to a device for real-time measuring the water absorption of various rock samples in a seepage experiment.

Background technique

Rock is permeable, and the research on rock permeability is widely used in petroleum, shale gas exploitation, oil and gas storage, and hydraulic engineering and other fields. It is of great significance to study the permeability of rocks to study the characteristics of rocks absorbing water, oil and other liquids, and to obtain the real-time water absorption of different types of rocks. The traditional way to measure the water absorption of rocks is to suspend the rocks just in contact with the liquid surface, after a certain time interval, remove the rocks, dry the rock surface, and measure the increase in rock weight, but this method is intermittent Unfortunately, it is impossible to obtain a continuous "water absorption-time" curve and the errors caused by different standards for drying the rock surface each time often make the measurement results unable to reflect the actual water absorption characteristics of the rock.

Contents of the invention

In order to solve the problem that the traditional method of measuring rock water absorption cannot accurately reflect the water absorption and permeability characteristics of rock itself, and cannot obtain a continuous "water absorption-time" curve. The patent of the present invention provides a device for measuring the water absorption of rocks in real time. The device can measure the water absorption of rocks per unit time in real time, avoiding the error of measuring water absorption by drying the rocks, and making the measurement results more accurate.

In order to achieve the above-mentioned purpose, the technical solution adopted by the patent of the present invention to solve the technical problem is: a device for measuring the water absorption of rocks in real time. , electronic scale tray, electronic scale, signal line, computer, power supply; the connection scheme is that the base is placed horizontally, the pole stands on the side of the base, the pulley is fixed on the mobile support, the glass dish is placed on the base, and the rock test The parts are suspended above the glass dish through iron wires, just in contact with the water surface. The iron wires are wound on pulleys and connected with weights. The weights are placed in the tray of the electronic scale.

The above mobile support can move up and down; the cross section of the glass dish should be more than 10 times the cross section of the rock specimen; the weight of the weight should be more than 2 times the weight of the rock specimen; the diameter of the pulley should not be less than 20mm; the accuracy of the electronic scale At least mg.

The measuring device is composed of an experimental device, a measuring device and a recording device. The length of the iron wire connecting the weight and the rock test piece, the diameter of the glass dish, the height of the water surface in the glass dish, and the parameters of the weight of the weight should be determined according to the size of the rock test piece. Make appropriate adjustments in the experiment.

When measuring with the shown inventive device, first measure the weight A and the rock sample weight B, after the weight meets the standard; connect the weight at one end of the iron wire, connect the rock sample at the other end of the iron wire bypassing the pulley, and Adjust the height of the water surface in the glass dish to just touch the bottom surface of the rock specimen, place the weight on the electronic scale, read the reading N of the electronic scale, and record it through the computer; then start the computer program, set the time interval as required, And use computer software to automatically and continuously record electronic scale readings N ₁ , N ₂ , N ₃ ,..., N _n at preset time intervals; after the experiment is completed, subtract N ₁ , N ₂ , N ₃ from N in turn , ..., N _n can get the real-time rock washing water volume, where A, B, N, N ₁ , N ₂ , N ₃ , ..., N _n are all in g.

The beneficial effect of the present invention is that it avoids the error caused by the traditional measurement method, that is, the error caused by drying the test piece, which cannot reflect the actual water absorption characteristics of the rock. Quantity-time" curve, which not only improves the accuracy of the experiment, but also saves the time and energy of researchers.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural schematic diagram of the present invention.

Figure 2 is a top view of the

In the figure 1. Base, 2. Pole, 3. Mobile bracket, 4. Pulley, 5. Wire rope, 6. Rock specimen, 7. Glass dish, 8. Solution, 9. Weight, 10. Electronic scale tray , 11. Electronic scale, 12. Signal line, 13. Electronic scale power supply, 14. Computer, 15. Computer power supply, 16. Wire.

detailed description

Below in conjunction with accompanying drawing 1-2, the present invention is further described:

In Fig. 1, a kind of device of real-time measurement rock liquid absorption is characterized in that it comprises: (1) base, (2) upright rod, (3) mobile support, (4) pulley, (5) wire rope, (6) rock specimen, (7) glass dish, (8) solution, (9) weight, (10) electronic scale tray, (11) electronic scale, (12) signal line, (13) electronic scale power supply, (14) computer, (15) computer power supply, (16) electric wire. The connection scheme is that the base (1) is placed horizontally, the pole (2) stands on the upper side of the base, the mobile bracket (3) is fixed on the pole (2), and the pulley (4) is fixed on the mobile bracket (3). , the glass dish (6) is placed on the base (1), the rock specimen is suspended above the glass dish (6) through the iron wire (5), just in contact with the liquid surface of the solution (8), and the iron wire (5) is wrapped around the pulley (4) is connected with the weight (9), and the weight (9) is placed in the electronic scale tray (10), and the electronic scale (11) is connected to the computer (14) by the signal line (12), and the electronic scale (11) is The electric wire (16) is connected to the electronic scale power supply (13), and the computer (14) is connected to the computer power supply (15) through the electric wire (16).

Fig. 2 is the top view of Fig. 1, in Fig. 2 (1) base, (2) upright bar, (3) mobile support, (4) pulley, (5) wire rope, (6) rock specimen, (7) Glass dish, (8) weight, (9) solution, (10) electronic scale tray, (11) electronic scale, (12) signal line, (13) electronic scale power supply, (14) computer, (15) computer power supply .

The above-mentioned mobile support (3) can move up and down on the vertical rod (2); the cross-section of the glass dish (6) should be more than 10 times the cross-section of the rock test piece (6); the weight of the weight (9) should be the rock test piece ( 6) More than 2 times the weight; the diameter of the pulley (4) should not be less than 20mm; the accuracy of the electronic scale (11) should be at least mg.

The measuring device is composed of an experimental device, a measuring device and a recording device, the length of the wire rope (5) connecting the weight (9) and the rock test piece (6), the diameter of the glass dish (7), the liquid in the glass dish (7) Surface height and weight (9) weight parameters should be determined according to the size of the rock test piece (6), and be properly adjusted in the experiment.

During measurement, described rock sample (6) is connected on the wire rope (5), and wire rope (5) is connected to weight (9) through pulley (4), and weight (9) is placed on electronic scale pallet ( 10) on.

The specific operation steps when measuring the liquid absorption of specific rocks are as follows:

1) First use an electronic scale to measure the weight of the weight A and the weight of the rock specimen B, and confirm that the weight of the weight is twice or more than the weight of the rock.

2) Connect a weight to one section of the iron wire, connect the rock specimen at the other end bypassing the pulley, start the computer program, and set the time interval as required.

3) Place the glass dish on the base, adjust the height of the liquid level in the glass dish back and forth so that it just touches the bottom surface of the rock specimen, place the weight on the electronic scale, and read the reading N of the electronic scale, and pass Computer recording, using computer software to automatically and continuously record electronic scale readings N ₁ , N ₂ , N ₃ ,..., N _n at preset time intervals.

4) After the experiment is completed, subtract N ₁ , N ₂ , N ₃ , ..., N _n from N in order to obtain the real-time rock wash volume, among which, A, B, N, N ₁ , N ₂ , The units of N ₃ , ..., N _n are all g.

Claims (3)

1. A device for measuring the water absorption of rocks in real time, characterized in that it comprises: (1) base, (2) pole, (3) mobile support, (4) pulley, (5) wire rope, (6) rock Test piece, (7) glass dish, (8) solution, (9) weight, (10) electronic scale tray, (11) electronic scale, (12) signal line, (13) electronic scale power supply, (14) computer , (15) computer power supply, (16) electric wire. The connection scheme is that the base (1) is placed horizontally, the pole (2) stands on the upper side of the base, the mobile bracket (3) is fixed on the pole (2), and the pulley (4) is fixed on the mobile bracket (3). , the glass dish (6) is placed on the base (1), the rock specimen is suspended above the glass dish (6) through the iron wire (5), just in contact with the water surface of the solution (8), and the iron wire (5) is wound on the pulley ( 4) Connect with the weight (9) on the top, the weight (9) is placed in the electronic scale tray (10), the electronic scale (11) is connected to the computer (14) through the signal line (12), and the electronic scale (11) is connected to the computer (14) through the wire (16) connect electronic scale power supply (13), computer (14) connect computer power supply (15) through electric wire (16). 2. the device of a kind of real-time measurement rock water absorption according to claim 1 is characterized in that, above-mentioned mobile support (3) can move up and down on pole (2); The cross section of glass dish (6) should be 10 times of rock The cross-section of the test piece (6) should be above the cross section; the weight (9) should be more than twice the weight of the rock test piece (6); the diameter of the pulley (4) should not be less than 20mm; the accuracy of the electronic scale (11) should be at least for mg. 3. the device of a kind of real-time measurement rock water absorption according to claim 1 is characterized in that, the wire rope (5) length that connects weight (9) and rock specimen (6), glass dish (7) diameter, The height of the water surface in the glass dish (7) and the weight parameters of the weight (9) should be determined according to the size of the rock test piece (6), and be properly adjusted in the experiment. During measurement, described rock sample (6) is connected on the wire rope (5), and wire rope (5) is connected to weight (9) through pulley (4), and weight (9) is placed on electronic scale pallet ( 10) on.