CN110952980A - Quantum dot tracer feeding device and fracturing horizontal well output section method - Google Patents
Quantum dot tracer feeding device and fracturing horizontal well output section method Download PDFInfo
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- CN110952980A CN110952980A CN201911155770.2A CN201911155770A CN110952980A CN 110952980 A CN110952980 A CN 110952980A CN 201911155770 A CN201911155770 A CN 201911155770A CN 110952980 A CN110952980 A CN 110952980A
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Abstract
The invention discloses a quantum dot tracer feeding device, which comprises a sand mixing truck, a liquid injection pipe, a tracer injection pipe, a control valve, a data transmission line, an intelligent valve controller and a feeding port, wherein the sand mixing truck is connected with the intelligent valve controller through the intelligent valve controller; one end of the sand mixing truck is provided with a liquid injection pipe, and the top of the liquid injection pipe is provided with a tracer injection pipe; a method of fracturing a production profile of a horizontal well, comprising the steps of: s1: determining the input amount of the quantum dot tracer by calculation; s2: weighing the quantum dot tracer and storing in a quantum dot tracer storage tank; the problems of low detection precision, high pollution degree, harmlessness to the health of field constructors and harmlessness to the existing living environment are solved.
Description
Technical Field
The invention relates to the field of oil and gas development, in particular to a quantum dot tracer feeding device and a method for fracturing a horizontal well output section.
Background
The yield of the horizontal well is low due to the fact that the horizontal well is affected by large resistance and low connectivity in a low-permeability reservoir, and economic development requirements cannot be met, so that the yield increasing and transformation of the horizontal well become the primary direction for improving the recovery efficiency, and staged fracturing of the horizontal well section of the horizontal well is the premise for obtaining a good effect. Meanwhile, the evaluation and interpretation after the horizontal well is fractured is also of great importance and is an important step for providing information for subsequent fracturing modification, wherein the evaluation and interpretation method for the output profile of each section after the fracturing is drawn becomes one of the generally accepted post-fracturing evaluation methods at home and abroad.
At present, the method for testing the output profile of each layer section after the fracturing volume of the horizontal well is modified is more, for example, an underground cable testing instrument can be used for testing the output profile, the output profile can also be calculated through a flowmeter installed in an oil pipe column, the existing high-efficiency and convenient testing method is used for testing the output profile of the fractured horizontal well in a segmented mode by utilizing a chemical tracer flow-back method, but the chemical tracer is low in detection precision and high in pollution degree, is unfavorable for the health of field construction personnel, and is also unfavorable for the existing living environment. And the quantum dots are nanoparticles with the size less than 10nm, compared with a chemical tracer, the quantum dots have stable optical properties, are easy to realize surface functionalization, have high instrument detection precision, are non-toxic, have no pollution to the environment, and are a second choice for field detection experiments.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a quantum dot tracer feeding device and a method for fracturing a horizontal well output section, and solves the problems of low detection precision, high pollution degree, and adverse effects on the health of field construction personnel and the existing living environment.
The quantum dot tracer feeding device comprises a sand mixing truck, a liquid injection pipe, a tracer injection pipe, a control valve, a data transmission line, an intelligent valve controller and a feeding port; the one end of fracturing blender truck sets up annotates the liquid pipe, and the top of annotating the liquid pipe sets up the spike agent injection pipe, and the top of spike agent injection pipe sets up the dog-house, sets up control flap between dog-house and the spike agent injection pipe, and the spike agent injection pipe passes through data transmission line and connects intelligent valve controller.
Preferably, the intelligent valve controller controls the injection rate of the quantum dot tracer by controlling the valve.
Preferably, the quantum dot tracer is injected into a feeding port, the fracturing fluid is injected into the sand mixing truck from an injection pipe, and the quantum dot tracer is injected from a tracer injection pipe so as to be mixed with the fracturing fluid and injected into the sand mixing truck.
Preferably, a method of fracturing a horizontal well production profile, comprising the steps of:
s1: determining the input amount of the quantum dot tracer by calculation;
s2: weighing the quantum dot tracer and storing in a quantum dot tracer storage tank;
s3: before fracturing, taking out the quantum dot tracer from a quantum dot tracer storage tank, mixing the quantum dot tracer with liquid and a propping agent through a quantum dot tracer feeding device, and injecting the mixture into a sand mixing truck;
s4: during fracturing construction, injecting fracturing fluid with quantum dot tracer into the underground by a fracturing truck;
s5: after fracturing is completed, extracting and producing an underground oil layer, and conveying mixed liquid with the quantum dot tracer agent extracted from each production layer section to the ground;
s6: sampling the extracted liquid, packaging by using a sealing tank, and transporting to an indoor laboratory;
s7: and detecting and analyzing the sampled sample by using a fluorescence photometer in an indoor laboratory to obtain an analysis and interpretation result, so that a more accurate fractured produced section is obtained.
The quantum dot tracer feeding device and the method for fracturing the output section of the horizontal well have the following beneficial effects:
the method for fracturing the output profile of the horizontal well can overcome the defect that the traditional chemical tracer explains the output profile of the fractured horizontal well, utilizes the quantum dot tracer, is high in accuracy, small in using amount, small in environmental pollution, small in harm to constructors, green and environment-friendly, and is relatively convenient to detect by utilizing a fluorescence photometer indoors.
Drawings
Fig. 1 is a diagram of a quantum dot tracer feeding device and a method for fracturing a horizontal well output profile according to the invention.
Fig. 2 is a flow chart of a method for putting the quantum dot tracer and fracturing a horizontal well output section according to the invention.
Reference numerals: 1-sand mixing truck, 2-liquid injection pipe, 3-tracer injection pipe, 4-control valve, 5-data transmission line, 6-intelligent valve controller and 7-feeding port.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1, the quantum dot tracer feeding device comprises a sand mixer truck, a liquid injection pipe, a tracer injection pipe, a control valve, a data transmission line, an intelligent valve controller and a feeding port; the one end of fracturing blender truck sets up annotates the liquid pipe, and the top of annotating the liquid pipe sets up the spike agent injection pipe, and the top of spike agent injection pipe sets up the dog-house, sets up control flap between dog-house and the spike agent injection pipe, and the spike agent injection pipe passes through data transmission line and connects intelligent valve controller.
The intelligent valve controller of the embodiment controls the injection rate of the quantum dot tracer by controlling the valve.
The quantum dot tracer of this embodiment injects the dog-house into, and fracturing fluid injects to the fracturing blender truck from annotating the liquid pipe, thereby the quantum dot tracer injects into and injects into the fracturing blender truck with fracturing fluid mixture from the tracer injection tube.
As shown in fig. 2, a method for fracturing a horizontal well production profile comprises the following steps:
s1: determining the input amount of the quantum dot tracer by calculation;
s2: since the storage conditions such as temperature and illumination have important influence on the optical performance and the stability of the quantum dot tracer, in order to ensure the stable property of the quantum dot tracer before injection, the quantum dot tracer is weighed and stored in a storage tank of the quantum dot tracer;
s3: before fracturing, taking out the quantum dot tracer from a quantum dot tracer storage tank, mixing the quantum dot tracer with liquid and a propping agent through a quantum dot tracer feeding device, and injecting the mixture into a sand mixing truck;
s4: during fracturing construction, injecting fracturing fluid with quantum dot tracer into the underground by a fracturing truck;
s5: after fracturing is completed, extracting and producing an underground oil layer, and conveying mixed liquid with the quantum dot tracer agent extracted from each production layer section to the ground;
s6: sampling the extracted liquid, packaging by using a sealing tank, and transporting to an indoor laboratory;
s7: and detecting and analyzing the sampled sample by using a fluorescence photometer in an indoor laboratory to obtain an analysis and interpretation result, so that a more accurate fractured produced section is obtained.
Claims (4)
1. The quantum dot tracer feeding device is characterized by comprising a sand mixing truck (1), a liquid injection pipe (2), a tracer injection pipe (3), a control valve (4), a data transmission line (5), an intelligent valve controller (6) and a feeding port (7); the one end of fracturing blender truck (1) sets up annotates liquid pipe (2), the top of annotating liquid pipe (2) sets up spike agent injection pipe (3), the top of spike agent injection pipe (3) sets up dog-house (7), set up control flap (4) between dog-house (7) and spike agent injection pipe (3), intelligent valve controller (6) is connected through data transmission line (5) in spike agent injection pipe (3).
2. The quantum dot tracer dispensing device according to claim 1, wherein the intelligent valve controller (6) controls the injection rate of the quantum dot tracer by controlling the valve (4).
3. The quantum dot tracer feeding device according to claim 1, wherein the quantum dot tracer is injected into the feeding port (7), the fracturing fluid is injected into the sand mixing truck (1) from the injection pipe (2), and the quantum dot tracer is injected from the tracer injection pipe (3) and is mixed with the fracturing fluid to be injected into the sand mixing truck (1).
4. A method for fracturing a production profile of a horizontal well is characterized by comprising the following steps:
s1: determining the input amount of the quantum dot tracer by calculation;
s2: weighing the quantum dot tracer and storing in a quantum dot tracer storage tank;
s3: before fracturing, taking out the quantum dot tracer from a quantum dot tracer storage tank, mixing the quantum dot tracer with liquid and a propping agent through a quantum dot tracer feeding device, and injecting the mixture into a sand mixing truck;
s4: during fracturing construction, injecting fracturing fluid with quantum dot tracer into the underground by a fracturing truck;
s5: after fracturing is completed, extracting and producing an underground oil layer, and conveying mixed liquid with the quantum dot tracer agent extracted from each production layer section to the ground;
s6: sampling the extracted liquid, packaging by using a sealing tank, and transporting to an indoor laboratory;
s7: and detecting and analyzing the sampled sample by using a fluorescence photometer in an indoor laboratory to obtain an analysis and interpretation result, so that a more accurate fractured produced section is obtained.
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Cited By (2)
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| CN112943228A (en) * | 2021-03-10 | 2021-06-11 | 四川佳衡建设工程有限公司 | Fluorescent nano proppant productivity profile test method |
| CN117234091A (en) * | 2023-11-14 | 2023-12-15 | 四川省威沃敦石油科技股份有限公司 | Oil gas well test quantum dot delivery system |
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Cited By (3)
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| CN112943228A (en) * | 2021-03-10 | 2021-06-11 | 四川佳衡建设工程有限公司 | Fluorescent nano proppant productivity profile test method |
| CN117234091A (en) * | 2023-11-14 | 2023-12-15 | 四川省威沃敦石油科技股份有限公司 | Oil gas well test quantum dot delivery system |
| CN117234091B (en) * | 2023-11-14 | 2024-01-23 | 四川省威沃敦石油科技股份有限公司 | Oil gas well test quantum dot delivery system |
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