Novel cluster well intelligent foam backoff bearing detection cable

Abstract

The utility model discloses a novel cluster well intelligence bubble row bearing detection cable, from inside to outside in proper order by dosing pipe, inner sheath layer, armoring layer and outer sheath are composed, at least four groups of passageway groups are equipped in the inner sheath layer, and passageway group includes two groups of data passageway, spare passageway and power passageway, passageway group is all by conductor and insulation and is composed, realizes the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent placement of the long -term permanent

Description

Technical Field

[0001] This utility model relates to a novel intelligent bubble drainage load detection cable for cluster wells. Background Technology

[0002] Foaming gas production involves injecting a surfactant into the well that generates foam upon contact with water. This reduces the surface tension of the water, and the agitation of the natural gas flow disperses the water, generating a large amount of low-density water-bearing foam. This improves the well's fluid-carrying capacity. Furthermore, the addition of a foaming agent increases the bubbling height of the bubbles, reducing gas slippage losses. Traditional methods involve shutting in the well and depressurizing, then separately deploying a fluid level measuring instrument and a chemical dosing pipe downhole. After chemical dosing, the well is shut in again. This process is time-consuming and does not allow for real-time collection of downhole data. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a novel intelligent bubble drain load-bearing detection cable for cluster wells that can be permanently suspended under pressure inside the wellbore for real-time, continuous, and long-term monitoring of the tubing fluid level and the inside of the wellbore.

[0004] The technical solution for realizing this utility model is as follows:

[0005] The new type of cluster-type intelligent bubble drainage load-bearing detection cable consists of a dosing tube, an inner sheath, an armor layer, and an outer sheath from the inside out. The inner sheath has at least four channel groups, including two data channels, a backup channel, and a power channel. Each channel group consists of a conductor and insulation.

[0006] The conductor is made of seven strands of TR-type soft copper strands, and the insulation is made of fluoroplastic FEP.

[0007] The dosing tube is a 316 stainless steel welded tube.

[0008] An integrated micro-sensor module is inserted and installed on the outer sheath of the cable. The integrated micro-sensor module is pin-shaped and placed in a slot in the outer sheath.

[0009] Both the inner and outer sheaths are made of extruded, tightly packed modified polypropylene (PP).

[0010] The armor layer is made of 72A galvanized aluminum high carbon steel wound armor with a twist angle of 40°.

[0011] By adopting the above technical solution, the amount of chemical dosing can be controlled by adjusting parameters on the ground through real-time liquid level conditions inside the tubing, thereby reducing operation and construction costs and improving recovery rate.

[0012] The armored structure bears the entire weight of the cable and the tensile load in the well, allowing it to be suspended in the high-pressure wellbore for extended periods without the need for frequent retrieval and deployment of instruments. This directly solves the problem of "long construction cycles and inability to conduct long-term monitoring."

[0013] The data channel transmits information collected by downhole sensors (such as fluid level monitoring, temperature, and pressure sensors) to the surface control system in real time and continuously, enabling "real-time monitoring and control." Surface personnel can immediately adjust dosing parameters based on the data, realizing a shift from "experience-based dosing" to "data-driven precision dosing."

[0014] The combination of the "armor layer" and the "protective system of inner and outer sheaths" solves the problem of "being able to stay underground for extended periods." The combination of "integrated sensors" and "dual-channel transmission" solves the problem of "being able to know the underground situation in real time." The combination of "dual-channel transmission" and the "surface control system" solves the problem of "being able to take immediate action based on the situation."

[0015] The synergistic effect of these structures will completely transform the traditional intermittent, labor-intensive operation mode into a continuous, automated, and intelligent production mode, ultimately achieving the core objective of reducing operating costs and increasing recovery rate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] In the attached diagram, 1 is the conductor; 2 is the insulation; 3 is the dosing tube; 4 is the inner sheath layer; 5 is the armor layer; 6 is the outer sheath; 7 is the data channel; 8 is the backup channel; and 9 is the power channel. Detailed Implementation

[0018] The new type of cluster well intelligent bubble drainage load-bearing detection cable consists of a dosing pipe 3, an inner sheath layer 4, an armor layer 5, and an outer sheath 6 from the inside out; the inner sheath layer has at least four channel groups, including two data channels 7, a spare channel 8, and a power channel 9; each channel group is composed of conductors and insulation. The cable's core is the transmission unit, surrounded by a robust armor layer formed by tightly woven high-strength galvanized steel wire or high-strength modified stainless steel wire at a specific twist angle (40°). This armor layer acts as a protective core unit, providing strong mechanical protection for internal electrical components, resisting downhole compression, wear, and impact, and ensuring long-term reliability. Inside the armor layer, two independent channels are integrated, including a data channel and a power channel. The data channel is used for high-speed, bidirectional transmission of data acquired by sensors and surface control commands. The power channel provides power to downhole intelligent dosing valves or sensors. The coordination of the power and data channels allows the surface system to immediately send commands to downhole actuators (such as miniature solenoid valves) via the cable after analyzing the data, controlling dosing and forming a complete perception-decision-execution closed loop. This significantly improves recovery rate and operational efficiency, achieving closed-loop control.

[0019] The conductor is made of seven strands of TR-type soft copper strands, and the insulation is made of fluoroplastic FEP. It exhibits excellent heat resistance, outstanding electrical properties, and superior chemical stability, making it suitable for harsh working environments downhole.

[0020] The dosing tube is made of 316 stainless steel welded pipe. 316 stainless steel welded pipe has a long service life.

[0021] An integrated micro-sensor module is inserted and installed on the outer sheath of the cable. This integrated micro-sensor module is pin-shaped and placed in a slot in the outer sheath. Liquid level, pressure, and temperature sensors are seamlessly integrated into specific locations on the cable body (such as the lowest point or multiple points distributed according to the needs of cluster wells) in a miniaturized and modular manner, rather than as an external, independent instrument, to achieve "continuous long-term monitoring." Because the sensor and cable are permanently placed downhole as an integrated unit, data can be collected 24 / 7, completely eliminating the temporary measurement mode of "deploying instruments" and reducing operational risks: there is no need to shut in the well and deploy equipment every time chemical is added, fundamentally reducing operational risks and the labor intensity of personnel.

[0022] Both the inner and outer sheaths are made of extruded, tightly wrapped modified polypropylene (PP). A multi-layered structure is adopted from the inside out. The inner insulation layer uses a high-performance fluoroplastic polymer to ensure electrical insulation and high-temperature stability. The outer sheath layer uses oil-resistant, corrosion-resistant, and high-temperature-resistant modified polypropylene to provide chemical protection. Ensuring "long-term reliability," this protection system ensures the long-term stability of the cable's electrical and mechanical properties in complex well environments with high temperature, high pressure, and corrosive substances (H2S, CO2).

[0023] The armor layer is made of 72A galvanized aluminum high-carbon steel wound armor with a twist angle of 40°. The stainless steel wire is tightly woven at a specific twist angle, providing strong mechanical protection for the internal electrical components, resisting downhole compression, wear and impact, and ensuring long-term reliability.

[0024] The workflow is as follows: First, the integrated micro-sensor module monitors the liquid level change signal in real time. Second, the signal is transmitted at high speed to the ground control system through the data channel of the dual-channel composite transmission unit. During this process, the integrated load-bearing and detection armor structure provides physical protection for the entire transmission path, ensuring unobstructed signal transmission. Third, the ground system analyzes the data and calculates the optimal dosage. Fourth, control commands are issued through the data channel, and simultaneously, the power channel is activated to drive the intelligent dosing valve downhole to precisely release the chemical. Fifth, throughout the entire process, the multi-layer composite protection and sealing system ensures that the harsh environment inside and outside the cable will not affect the reliable execution of steps 1-4, guaranteeing the long-term, maintenance-free operation of the system.

Claims

1. A novel cluster-type intelligent bubble-drain load-bearing detection cable, characterized in that, From the inside out, it consists of a dosing tube, an inner sheath, an armor layer, and an outer sheath; the inner sheath has at least four sets of channels, including two data channels, a backup channel, and a power channel; each set of channels is composed of conductors and insulation.

2. The novel cluster-type intelligent bubble drainage load-bearing detection cable according to claim 1, characterized in that, The conductor is made of seven strands of TR-type soft copper strands, and the insulation is made of fluoroplastic FEP.

3. The novel cluster-type intelligent bubble drainage load-bearing detection cable according to claim 1, characterized in that, The dosing tube is a 316 stainless steel welded tube.

4. The novel cluster-type intelligent bubble drainage load-bearing detection cable according to claim 1, characterized in that, An integrated micro-sensor module is inserted and installed on the outer sheath. The integrated micro-sensor module is pin-shaped and placed in a slot in the outer sheath.

5. The novel cluster-type intelligent bubble drainage load-bearing detection cable according to claim 1, characterized in that, Both the inner and outer sheaths are made of extruded, tightly packed modified polypropylene (PP).

6. The novel cluster-type intelligent bubble drainage load-bearing detection cable according to claim 1, characterized in that, The armor layer is made of 72A galvanized aluminum high carbon steel wound armor with a twist angle of 40°.

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