CN108956897B - Experimental device and experimental method for measuring slow release rate of slow-release tracer - Google Patents
Experimental device and experimental method for measuring slow release rate of slow-release tracer Download PDFInfo
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Abstract
An experimental device and an experimental method for measuring the slow release rate of a slow release type tracer are disclosed, wherein the experimental device comprises a liquid supply system, a visual tracer release cavity, a constant temperature system and a liquid acquisition device; the liquid supply system comprises a liquid storage tank, a liquid storage tank bracket with adjustable height and a liquid flow pipeline; the visual tracer release cavity comprises a shell, an inlet end and an outlet end, and the slow-release tracer can be placed in the visual tracer release cavity; a thermostatic system within which a visual tracer release chamber can be placed and which provides a constant temperature; the liquid collection device comprises a sample collection bottle and an electronic balance. The experimental device provided by the invention adopts a gravity mode to provide a stable liquid flow rate, replaces experimental equipment with complex equipment, high experimental cost, easy interruption of experiment and harsh experimental environment requirements, has the characteristics of complete functions, good stability, easy operation and low cost, and can meet the experimental requirements related to the slow-release rate measurement of the slow-release tracer.
Description
Technical Field
The invention belongs to the technical field of physical experiments of petroleum and natural gas, and relates to an experimental device and an experimental method for measuring slow release rate of a slow release type tracer.
Background
In the development and production process of an oil field, the oil production and water production conditions of different well sections of the oil well can change along with the lapse of time, and accurate, real-time and economic acquisition of the oil production and water production information of the different well sections of the oil well is an important prerequisite for measures such as subsequent production system optimization, reservoir transformation, profile control and water shutoff. The production profile technology of the slow-release tracer oil well researched and developed in recent years has the characteristics of low cost, long term, high efficiency and no influence on normal production, and also has wide application prospect.
The slow release rate is an important parameter of the slow release type tracer, and is also the key of the optimization and interpretation method of the slow release type tracer. At present, when the slow release rate of the slow release type tracer is measured, the slow release rate of the slow release type tracer is determined mainly by flushing the surface of the slow release type tracer with fluid at a constant flow rate or at a periodically variable flow rate through a displacement pump and detecting the content of the tracer in the flushed fluid. However, the method has the problems of complex equipment, high experiment cost, easy interruption of the experiment, harsh experiment environment requirements and the like.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an experimental device and an experimental method for measuring the slow release rate of a slow release type tracer.
The technical scheme of the invention is as follows:
a slow release type tracer slow release rate determination experimental device comprises a liquid supply system, a visual tracer release cavity, a constant temperature system and a liquid collection device;
the liquid supply system comprises a liquid storage tank, a liquid storage tank support with adjustable height and a liquid flow pipeline, wherein the liquid storage tank is arranged on the liquid storage tank support, and the height of the liquid storage tank on the liquid storage tank support is adjustable;
the slow-release type tracer is placed in the visual tracer release cavity, the inlet end of the visual tracer release cavity is connected with the liquid storage tank through a liquid flow pipeline, and a valve is arranged on the liquid flow pipeline; the outlet end of the visual tracer releasing cavity is connected with a liquid collecting device;
the visual tracer release cavity is horizontally arranged in the constant temperature system.
The liquid storage tank support comprises a cross rod, a vertical rod and a base, the lower end of the vertical rod is fixedly mounted on the base, the cross rod can be vertically adjusted and mounted at the upper end of the vertical rod, and the liquid storage tank is connected with the cross rod.
The two vertical rods are arranged side by side, two ends of the cross rod are respectively sleeved on the two vertical rods through a sleeve, a threaded hole is formed in the wall of the sleeve, and the threaded hole is connected with a bolt for jacking the cross rod and the vertical rods relatively; when the cross rod and the vertical rod are relatively fixed, the bolt is screwed, the end part of the bolt is propped against the vertical rod, and the cross rod and the vertical rod are relatively propped; when the relative position is adjusted to horizontal pole and montant, the bolt is unscrewed and tip and montant separation, but horizontal pole and montant relative activity.
The vertical rod is provided with a graduated scale for reading the height of the liquid tank.
The visual tracer release cavity comprises a shell and end plugs arranged at two ends of the shell, the end plugs are sealed with the shell, and holes for inserting the liquid flow pipeline are formed in the end plugs.
The end plug adopts the rubber buffer.
The liquid collecting device comprises a sample collecting bottle and an electronic balance, wherein the sample collecting bottle is arranged on the electronic balance; the sample collection bottle is connected with the outlet end of the visual tracer release cavity.
The sample collecting bottle is provided with a bottle plug, so that evaporation and dissipation of substances in the sample collecting bottle can be prevented; the accuracy of the electronic balance was 0.01 g.
The liquid storage tank is made of colorless transparent organic glass material; the constant temperature system adopts a water bath kettle; the liquid storage tank bracket, the liquid flow pipeline and the valve are all made of stainless steel; the capacity of each liquid storage tank is 10-25L.
An experiment method for measuring the slow release rate of a slow release type tracer is carried out by the device and comprises the following steps:
step 1), opening a constant temperature system, and setting the working temperature of the constant temperature system;
step 2), filling the simulated formation water into a liquid storage tank, and opening a valve to enable the simulated formation water to finally flow into a liquid collection device through a liquid flow pipeline and a visual tracer release cavity;
step 3), adjusting the height of the liquid storage tank according to the flow rate of the visual tracer release cavity set by an experiment, and measuring and calibrating the flow rate of the visual tracer release cavity by using a liquid acquisition device in the adjusting process;
step 4), after the liquid flow of the visual tracer release cavity stably flows, collecting a liquid sample dissolved with the effective chemical components of the slow-release tracer in a liquid collecting device, and detecting the concentration of the tracer in the liquid sample;
step 5), when the simulated formation water in the liquid storage tank is insufficient, adding the simulated formation water into the liquid storage tank;
and 6) repeating the steps 4) to 5) until the whole experiment period is finished, and finishing the determination of the slow release rate of the water-soluble slow release type tracer.
The experimental period is 2-3 months.
The invention has the following beneficial effects:
the slow-release type tracer slow-release rate measurement experimental device can adjust the height of the liquid storage tank through the liquid storage tank support, so that the liquid storage tank, the visual tracer release cavity and the liquid collection device have height difference, namely, the stable liquid flow rate is provided in a gravity mode, and a displacement pump which is complex in equipment, high in experimental cost, easy to interrupt in experiment and harsh in experimental environment requirement is replaced; because the visual tracer release cavity is transparent and visible, the slow-release tracer can be observed in real time under the condition of not influencing normal experiments; the constant temperature can be provided through a constant temperature system to achieve the tracing effect of the tracer at different temperatures; when the experimental device is used, the constant temperature system is firstly opened, and the working temperature of the constant temperature system is set; then the simulated formation water is filled into the liquid storage tank, and the valve is opened, so that the simulated formation water finally flows into the liquid acquisition device through the liquid flow pipeline and the visual tracer release cavity; then adjusting the height of the liquid storage tank according to the flow rate of the visual tracer releasing cavity set by an experiment, and measuring and calibrating the flow rate of the visual tracer releasing cavity by using a liquid collecting device in the adjusting process; then collecting a liquid sample dissolved with the effective chemical components of the slow-release tracer in a liquid collecting device after the liquid flow of the visual tracer releasing cavity stably flows, and detecting the concentration of the tracer in the liquid sample; when the liquid in the liquid storage tank is insufficient, adding the liquid into the liquid storage tank; repeating the two steps until the whole experiment period is completed; the experimental device has the advantages of simple structure, easy operation and convenient use, and can meet the relevant experimental requirements of the slow-release rate determination of the slow-release tracer.
The experimental device has the advantages that the experimental method is simple and convenient to operate, and has the characteristic of meeting the relevant experimental requirements of the slow-release rate measurement of the slow-release tracer.
Drawings
FIG. 1 is a schematic structural diagram of an experimental device for determining the sustained-release rate of a sustained-release tracer according to the present invention;
FIG. 2 is a schematic view of the connecting portion of the cross bar and the vertical bar according to the present invention;
fig. 3 is a right side view of fig. 2.
In the figure, 1-a liquid storage tank, 2-a liquid storage tank bracket, 2-1-a cross rod, 2-1-1-a sleeve, 2-1-2-a bolt, 2-2-a vertical rod, 2-3-a base, 3-a valve, 4-a liquid flow pipeline, 5-a constant temperature system, 6-a visual tracer release cavity, 6-1-an inlet end, 6-2-an outlet end, 7-a slow release type tracer, 8-a sample collection bottle and 9-an electronic balance.
Detailed Description
The present invention is described in detail below with reference to the following embodiments and the attached drawings, and it should be noted that the embodiments are only an implementation method of the present invention for specific situations, and do not limit the present invention in any way, and any simple modification, change and other changes made according to the technical spirit of the present invention are within the protection scope of the present invention.
Referring to fig. 1, the slow release rate measurement experimental device of the slow release type tracer of the invention comprises a liquid supply system, a visual tracer release cavity 6, a constant temperature system 5 and a liquid collection device; the liquid supply system comprises a liquid storage tank 1, a liquid storage tank bracket 2 with adjustable height and a liquid flow pipeline 4, wherein the liquid storage tank 1 is arranged on the liquid storage tank bracket 2, and the height of the liquid storage tank 1 on the liquid storage tank bracket 2 is adjustable; a slow-release tracer 7 is placed in the visual tracer releasing cavity 6, the inlet end 6-1 of the visual tracer releasing cavity 6 is connected with the liquid storage tank 1 through a liquid flow pipeline 4, and a valve 3 is arranged on the liquid flow pipeline 4; the outlet end 6-2 of the visual tracer releasing cavity 6 is connected with a liquid collecting device; the visual tracer release chamber 6 is horizontally arranged in the thermostatic system 5.
As a preferred embodiment of the invention, the liquid storage tank support 2 comprises a cross rod 2-1, a vertical rod 2-2 and a base 2-3, the lower end of the vertical rod 2-2 is fixedly arranged on the base 2-3, the cross rod 2-1 is arranged at the upper end of the vertical rod 2-2 in a vertically adjustable manner, and the liquid storage tank 1 is connected with the cross rod 2-1.
As a preferred embodiment of the invention, two vertical rods 2-2 are arranged side by side, two ends of a cross rod 2-1 are respectively sleeved on the two vertical rods 2-2 through sleeves, the walls of the sleeves are provided with threaded holes, and the threaded holes are matched and connected with bolts for relatively jacking the cross rod 2-1 and the vertical rods 2-2; when the cross rod 2-1 and the vertical rod 2-2 are fixed relatively, the bolt is screwed tightly, the end part of the bolt is propped against the vertical rod 2-2, and the cross rod 2-1 and the vertical rod 2-2 are propped tightly relatively; when the relative positions of the cross rod 2-1 and the vertical rod 2-2 are adjusted, the bolt is unscrewed, the end part of the bolt is separated from the vertical rod 2-2, and the cross rod 2-1 and the vertical rod 2-2 can move relatively; the vertical rod 2-2 is provided with a graduated scale for reading the height of the liquid tank.
As a preferred embodiment of the invention, the visual tracer release chamber 6 comprises a casing and end plugs arranged at two ends of the casing, the end plugs are sealed with the casing, and the end plugs are provided with holes for inserting the liquid flow pipelines 4.
As a preferred embodiment of the present invention, a rubber plug is used for the end plug.
In a preferred embodiment of the present invention, the material of the housing is colorless transparent organic glass material (PMMA).
As a preferred embodiment of the present invention, the liquid collection device comprises a sample collection bottle 8 and an electronic balance 9, the sample collection bottle 8 is disposed on the electronic balance 9; the sample collection vial 8 is connected to the outlet end 6-2 of the visual tracer release chamber 6.
As a preferred embodiment of the present invention, the sample collection bottle 8 has a stopper to prevent evaporation and dissipation of the contents of the sample collection bottle; the accuracy of the electronic balance 9 was 0.01 g.
As the preferred embodiment of the invention, the material of the liquid storage tank 1 is colorless transparent organic glass material (PMMA); the constant temperature system 5 adopts a water bath kettle; the liquid storage tank bracket 2, the liquid flow pipeline 4 and the valve 3 are all made of stainless steel; the capacity of each liquid storage tank is 10-25L.
The experimental method for measuring the slow release rate of the slow release type tracer is carried out by the device and comprises the following steps:
step 1), filling a slow-release tracer 7 into a visual tracer releasing cavity 6, and fully connecting an inlet end 6-1 and an outlet end 6-2 with the visual tracer releasing cavity 6;
step 2), opening the constant temperature system 5, and setting the working temperature of the constant temperature system 5;
step 3), filling simulated formation water into the liquid storage tank 1, and opening the valve 3 to enable the simulated formation water to finally flow into the sample collection bottle 8 through the liquid flow pipeline 4 and the visual tracer release cavity 6;
step 4), adjusting the height of the liquid storage tank 1 according to the flow rate of the visual tracer release cavity 6 set by experiments, and measuring and calibrating the flow rate of the visual tracer release cavity by using an electronic balance 9 in the adjusting process;
step 5), after the liquid flow of the visual tracer release cavity 6 stably flows, collecting a liquid sample in which the effective chemical components of the slow-release tracer 7 are dissolved in a liquid collecting device, and carrying out a related tracer concentration detection experiment to detect the concentration of the tracer in the liquid sample;
and 7) repeating the steps 5) to 7) until the whole experiment period is finished, and finishing the determination of the slow release rate of the water-soluble slow release type tracer.
As a preferred embodiment of the invention, the experimental period is generally 2-3 months.
The experimental device provided by the invention adopts a gravity mode to provide a stable liquid flow rate, replaces experimental equipment with complex equipment, high experimental cost, easy interruption of experiment and harsh experimental environment requirements, has the characteristics of complete functions, good stability, easy operation and low cost, and can meet the experimental requirements related to the slow-release rate measurement of the slow-release tracer.
Claims (8)
1. A slow release type tracer slow release rate measurement experimental device is characterized by comprising a liquid supply system, a visual tracer release cavity (6), a constant temperature system (5) and a liquid collection device;
the liquid supply system comprises a liquid storage tank (1), a liquid storage tank support (2) with adjustable height and a liquid flow pipeline (4), wherein the liquid storage tank (1) is arranged on the liquid storage tank support (2), and the height of the liquid storage tank (1) on the liquid storage tank support (2) is adjustable;
a slow-release tracer (7) is placed in the visual tracer releasing cavity (6), the inlet end (6-1) of the visual tracer releasing cavity (6) is connected with the liquid storage tank (1) through a liquid flow pipeline (4), and a valve (3) is arranged on the liquid flow pipeline (4); the outlet end (6-2) of the visual tracer releasing cavity (6) is connected with a liquid collecting device;
the visual tracer release cavity (6) is horizontally arranged in the constant temperature system (5);
the liquid storage tank support (2) comprises a cross rod (2-1), a vertical rod (2-2) and a base (2-3), the lower end of the vertical rod (2-2) is fixedly arranged on the base (2-3), the cross rod (2-1) is arranged at the upper end of the vertical rod (2-2) in an up-and-down adjustable mode, and the liquid storage tank (1) is connected with the cross rod (2-1);
the visual tracer release cavity (6) comprises a shell and end plugs arranged at two ends of the shell, the end plugs are sealed with the shell, and holes for inserting the liquid supply pipeline (4) are formed in the end plugs.
2. The experimental device for determining the slow release rate of the slow release type tracer according to claim 1, wherein two vertical rods (2-2) are arranged side by side, two ends of the cross rod (2-1) are respectively sleeved on the two vertical rods (2-2) through sleeves, threaded holes are formed in the walls of the sleeves, and the threaded holes are connected with bolts which are used for tightly jacking the cross rod (2-1) and the vertical rods (2-2) relatively.
3. The experimental apparatus for measuring the slow release rate of the slow release type tracer according to claim 1, wherein the vertical rod (2-2) is provided with a graduated scale for reading the height of the liquid tank.
4. The slow release rate testing device for the slow release type tracer according to claim 1, wherein the liquid collecting device comprises a sample collecting bottle (8) and an electronic balance (9), the sample collecting bottle (8) is disposed on the electronic balance (9); the sample collection bottle (8) is connected with the outlet end (6-2) of the visual tracer release cavity (6).
5. The slow release rate testing apparatus of claim 4, wherein the sample collection bottle (8) has a bottle stopper, and the electronic balance (9) has an accuracy of 0.01 g.
6. The slow release rate testing experimental device of the slow release type tracer agent according to claim 1, characterized in that the material of the liquid storage tank (1) is colorless transparent organic glass material; the constant temperature system (5) adopts a water bath kettle; the liquid storage tank bracket (2), the liquid flow pipeline (4) and the valve (3) are all made of stainless steel; the capacity of each liquid storage tank is 10-25L.
7. A slow release rate testing experiment method of a slow release type tracer, which is carried out by the slow release rate testing experiment device of any one of claims 1 to 6, and comprises the following steps:
step 1), opening a constant temperature system (5), and setting the working temperature of the constant temperature system (5);
step 2), filling simulated formation water into the liquid storage tank (1), and opening a valve to enable the simulated formation water to finally flow into the liquid collection device through the liquid flow pipeline (4) and the visual tracer release cavity (6);
step 3), adjusting the height of the liquid storage tank (1) according to the flow rate of the visual tracer release cavity (6) set by experiments, and measuring and calibrating the flow rate of the visual tracer release cavity by using a liquid acquisition device in the adjusting process;
step 4), after the liquid flow of the visual tracer release cavity (6) stably flows, collecting a liquid sample dissolved with effective chemical components of the slow-release tracer (7) in a liquid collecting device, and detecting the concentration of the tracer in the liquid sample;
step 5), when the simulated formation water in the liquid storage tank (1) is insufficient, adding the simulated formation water into the liquid storage tank (1);
and 6) repeating the steps 4) to 5) until the whole experiment period is finished, and finishing the determination of the slow release rate of the water-soluble slow release type tracer.
8. The slow release rate test experiment method of the slow release type tracer according to claim 7, wherein the experiment period is 2-3 months.
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| CN109707373B (en) * | 2018-12-17 | 2022-06-14 | 西安石油大学 | Horizontal well-vertical well bidirectional tracing method based on fluid production profile test and inter-well tracing |
| CN109797700A (en) * | 2019-03-05 | 2019-05-24 | 中国科学院南京地理与湖泊研究所 | A kind of artificial streams device of field condition Imitating environmental change |
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