A contact nipple for oil and gas well nano-quantum tracing monitoring

Abstract

This utility model relates to the field of oil and gas field development equipment technology, and in particular to a contact-type short section for monitoring oil and gas wells using nano-quantum tracers. This utility model provides such a contact-type short section for monitoring oil and gas wells using nano-quantum tracers, comprising a perforated section, a screen, nano-quantum tracer strips, an end ring, a stainless steel jacket, and a tubing short section. The perforated section is located in the middle of the tubing short section, with multiple through holes circumferentially formed on the perforated section. A screen is welded to the surface of the perforated section, and multiple nano-quantum tracer strips are installed on the screen. A stainless steel jacket is added to the outside of the nano-quantum tracer strips. Because this short section can be directly deployed on the target producing layer of the oil reservoir, the released tracer can sensitively reflect the flow state of the corresponding layer. Combined with periodic sampling analysis, near-continuous dynamic monitoring can be achieved, significantly improving the temporal resolution and spatial positioning capability of the data, reducing information delay and distortion. Furthermore, multiple such short sections can be used in series to achieve distributed synchronous monitoring of multiple layers.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas field development equipment technology, and in particular to a contact-type short section for monitoring nano-quantum tracers in oil and gas wells. Background Technology

[0002] In the process of oil and gas field development, especially for multi-layer synergistic wells, horizontal wells and large-scale fracturing wells, accurately grasping the production dynamics of each producing layer (such as fluid production, water production timing, inter-layer interference, crossflow channels, etc.) is of great significance for optimizing production strategies, improving recovery rate and extending well life.

[0003] In recent years, with the development of nanomaterials and molecular coding technology, nanoscale functionalized tracers have gradually become the core of the next generation of intelligent tracer technology due to their advantages such as high stability, strong anti-interference, and unique coded identification. Compared with traditional radioactive or chemical tracers, nano-tracers can achieve precise source tracing through unique "fingerprint" signals, theoretically providing an ideal solution for multi-layer synchronous monitoring. However, existing technical solutions mostly adopt wellhead or downhole injection methods. After the tracer enters the formation, its migration path and release rate are difficult to control precisely, resulting in a short effective period, unstable signal response, and easy mixing of tracer signals in the produced fluid, making it difficult to accurately distinguish the contribution of each layer and limiting spatial positioning capabilities.

[0004] Therefore, a contact-type short section is needed for nano-quantum tracer monitoring of oil and gas wells. Utility Model Content

[0005] To overcome the shortcomings of existing technologies that mostly use wellhead or downhole injection, where the tracer's migration path and release rate are difficult to control precisely after entering the formation, resulting in a short effective period, unstable signal response, and easy mixing of tracer signals in the produced fluid, making it difficult to accurately distinguish the contributions of each layer and limiting spatial positioning capabilities, this invention provides a contact-type short section for nano-quantum tracer monitoring in oil and gas wells.

[0006] The technical solution is as follows: A contact-type short section for monitoring oil and gas wells using nano-quantum tracers includes a perforated section, a screen, nano-quantum tracer tapes, end rings, a stainless steel jacket, and a tubing short section. The tubing short section has a perforated section in the middle, with multiple through holes circumferentially opened on the perforated section. A screen is welded to the surface of the perforated section, and multiple nano-quantum tracer tapes are installed on the screen. End rings are fixedly connected to both ends of the tubing short section, and the two end rings respectively cover the screen and the two ends of the nano-quantum tracer tapes.

[0007] Preferably, it also includes a stainless steel tube jacket, which is fixedly connected between the two end rings, and covers the screen and the nano quantum tracer tape.

[0008] As a preferred option, it also includes a PP hollow plastic partition protective sleeve, and the stainless steel pipe outer sleeve is fitted with multiple sections of PP hollow plastic partition protective sleeve.

[0009] Preferably, it also includes a female connector and a male connector, with the female connector fixedly connected to the left end of the oil pipe sub and the male connector fixedly connected to the right end of the oil pipe sub.

[0010] Preferably, the female connector has an internal thread, and the male connector has an external thread, with the female connector and the male connector being threaded together.

[0011] As a preferred option, the screen effectively protects the quantum tracer from the scouring of oil and water in the oil well, ensuring a longer service life for the quantum tracer.

[0012] Compared with the prior art, this utility model provides a contact-type short section for nano-quantum tracer monitoring of oil and gas wells, which has the following beneficial effects: 1. Since the short section can be directly deployed on the target producing layer of the oil reservoir, the tracer it releases can sensitively reflect the flow state of the corresponding layer. Combined with periodic sampling analysis, it can achieve near-continuous dynamic monitoring, significantly improve the temporal resolution and spatial positioning capability of the data, and reduce information delay and distortion. In addition, multiple such short sections can be used in series to achieve distributed synchronous monitoring of multiple layers. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional cross-sectional view of the perforated section, oil pipe short section, and male connector of this utility model.

[0015] Figure 3 This is an exploded view of the perforated section, end ring, and stainless steel tube sleeve of this utility model.

[0016] Figure 4 This is a three-dimensional cross-sectional view of the perforated section and screen of this utility model.

[0017] Explanation of reference numerals in the attached diagram: 1. Perforated section, 2. Through hole, 3. Screen, 4. Nano quantum tracer tape, 5. End ring, 6. Oil pipe short section, 7. Stainless steel pipe outer sleeve, 8. PP hollow board plastic partition protective sleeve, 9. Female connector buckle, 10. Male connector buckle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: A contact-type short section for nano-quantum tracer monitoring in oil and gas wells. Please refer to [link / reference]. Figures 1-4 The system includes a perforated section 1, a screen 3, nano-quantum tracer tapes 4, end rings 5, and a tubing sub 6. The perforated section 1 is located in the middle of the tubing sub 6. The tubing sub 6 is a seamless stainless steel pipe. Multiple through holes 2 are circumferentially formed on the perforated section 1. A screen 3 is welded to the surface of the perforated section 1, and multiple nano-quantum tracer tapes 4 are installed on the screen 3. End rings 5 ​​are fixedly connected to both ends of the tubing sub 6, respectively covering the screen 3 and the ends of the nano-quantum tracer tapes 4. A stainless steel outer sleeve 7 is fixedly connected between the two end rings 5. The inner wall of the stainless steel outer sleeve 7 is welded to the outer side of the end rings 5. The stainless steel outer sleeve 7 covers the screen 3 and the nano-quantum tracer tapes 4, protecting the nano-quantum tracer tapes 4 during well running. To prevent mechanical damage during the process, the stainless steel pipe jacket 7 is fitted with a multi-section PP hollow plastic partition protective sleeve 8. The PP hollow plastic partition protective sleeve 8 protects the short section during transportation, preventing surface scratches. It also includes a female connector 9 and a male connector 10. The left end of the oil pipe short section 6 is fixedly connected to the female connector 9, and the right end of the oil pipe short section 6 is fixedly connected to the male connector 10. The female connector 9 is provided with internal threads, and the male connector 10 is provided with external threads. The female connector 9 and the male connector 10 are threadedly connected. The screen 3 provides good protection for the nano-quantum tracer belt 4 in the oil well, as oil and water wash away the nano-quantum tracer belt, ensuring a longer service life for the quantum nano-tracer belt.

[0020] During installation, the entire sub-section is connected in series to the tubing via female connectors 9 and male connectors 10 at both ends. During well completion or workover operations, it is lowered into the target formation along with the tubing string. The main body of the sub-section is a perforated section 1 with multiple through holes 2. A screen 3 is welded to its outer surface, and a nano-quantum tracer band 4 is installed. When the produced fluid (oil, gas, water) flows through the sub-section, the fluid passes through the screen 3 under pressure differential and comes into direct contact with the internal nano-quantum tracer band 4. Under the continuous flushing and dissolving action of the fluid, the nano-quantum tracer material is slowly released at a stable and controllable rate and is extracted to the surface along with the produced fluid. At the surface, the collected fluid samples are analyzed with high sensitivity using specialized quantum signal detection equipment. Analysis can identify the unique quantum signals released by specific subsections. By combining the detected signal intensity, occurrence time, and other data with fluid dynamics models, it is possible to accurately determine the source layer of downhole fluids, identify flow channels, monitor the production contribution rate of each producing layer, and evaluate the fracturing effect. This enables long-term and accurate monitoring of oil and gas well production dynamics. Since the subsection can be directly deployed near the target producing layer, the tracer it releases can sensitively reflect the flow state of the corresponding layer. Combined with periodic sampling analysis, it can achieve near-continuous dynamic monitoring, significantly improving the temporal resolution and spatial positioning capability of the data, and reducing information delay and distortion. In addition, multiple such subsections can be used in series to achieve distributed synchronous monitoring of multiple layers.

[0021] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. A contact-type short section for nano-quantum tracer monitoring in oil and gas wells, characterized in that: It includes a perforated section (1), a screen (3), a nano-quantum tracer (4), and an end ring (5). The perforated section (1) is set in the middle of the oil pipe section (6). Multiple through holes (2) are opened along the circumferential direction on the perforated section (1). The screen (3) is welded to the surface of the perforated section (1). Multiple nano-quantum tracers (4) are installed on the screen (3). The end rings (5) are fixedly connected to both ends of the oil pipe section (6). The two end rings (5) respectively cover the screen (3) and the two ends of the nano-quantum tracer (4).

2. The contact-type short section for nano-quantum tracer monitoring in oil and gas wells according to claim 1, characterized in that: It also includes a stainless steel tube jacket (7), with the stainless steel tube jacket (7) fixedly connected between the two end rings (5), and the stainless steel tube jacket (7) covering the screen (3) and the nano quantum tracer tape (4).

3. The contact-type short section for nano-quantum tracer monitoring in oil and gas wells according to claim 2, characterized in that: It also includes a PP hollow board plastic partition protective sleeve (8), and a stainless steel pipe outer sleeve (7) with multiple PP hollow board plastic partition protective sleeves (8).

4. The contact-type short section for nano-quantum tracer monitoring of oil and gas wells according to claim 3, characterized in that: It also includes a female connector (9) and a male connector (10). The left end of the oil pipe short section (6) is fixedly connected to the female connector (9), and the right end of the oil pipe short section (6) is fixedly connected to the male connector (10).

5. A contact-type short section for nano-quantum tracer monitoring of oil and gas wells according to claim 4, characterized in that: The female connector (9) is provided with an internal thread, and the male connector (10) is provided with an external thread. The female connector (9) and the male connector (10) are threadedly connected.

6. The contact-type short section for nano-quantum tracer monitoring in oil and gas wells according to claim 5, characterized in that: The sieve (3) protects the quantum nanotraceband (4) in the oil well from the scouring of oil and water, ensuring a longer service life for the quantum nanotraceband.

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