让我们从 CHALLENGER 开始吧，它是一种电动跨接工具，代表了连续油管传送多区域隔离在井增产、选择性化学品放置和诊断应用方面的重大飞跃。

这使得处理穿孔、流入控制装置 (ICD)、筛管和其他相关区域成为可能，以提高产量、应用水控制化学品、进行水垢处理以及进行类似操作。这种全电动工具可确保井下作业和地面控制之间的无缝通信，从而实现对井数据的实时监控，以提高处理效果并确保 100% 的放置验证。

CHALLENGER 跨接工具的实时双向通信系统有助于持续监测隔离区内的井下压力和温度，确保在整个注入处理过程中准确验证位置。实时井下传感器读数可根据实际观察结果进行即时决策，而精确的深度控制可确保最佳的封隔器位置和处理液分配。

在一次作业中，CHALLENGER 系统被用于对碳酸盐储层中的七个穿孔进行酸化刺激，所有操作均在一次运行中完成。精确的深度控制对于设置封隔器至关重要，尤其是考虑到穿孔间隔之间的空白管段很短（2 英尺）。使用多组元件，可以在一次运行中独立隔离和处理多个区域，从而简化操作并将刺激成本降低高达 90%。

此外，CHALLENGER 电动跨接工具具有无与伦比的控制和多功能性。其电动封隔器无需液压或机械操作，最大限度地减少了连续油管的磨损并降低了操作复杂性。

在一项应用中，CHALLENGER 用于调查十个 ICD 的状态（打开或关闭）。无需通过盘管泵送即可将封隔器保持在设定位置的能力对于通过监测封隔器之间的滞留压力来确定 ICD 的状态至关重要。一次运行即可确认所有十个 ICD 的位置。

鉴于井的水平延伸，CHALLENGER 系统非常适合这项任务，因为不需要从地面进行额外的力量操纵来设置和解除封隔器。

如图 1所示，该工具由多个模块组成，包括两个封隔器元件、阀门、拉伸/压缩接头、电子模块和用于检测套管接箍和穿孔的 CCPL，整体井下系统通过连续油管的耐酸内部电缆从地面进行电动控制。两个封隔器之间的距离是可调的，流体通过连续油管泵送，从它们之间流出。封隔器上方、之间和下方的压力和温度传感器不断将实时信息传递到地面。

图1——HALLENGER电动跨鞍组件。

电动封隔器启动和传感器放置的协同作用比传统系统具有明显的优势，包括：

1. 封隔器之间可进行不间断的井下压力诊断，因为无需通过连续油管泵送来启动封隔器。

2. 当连续油管停止泵送时，封隔器保持设定状态，从而能够监测压力下降曲线，以判断油藏对处理的反应。

3. 可单独启动一个或两个机械封隔器，以增强操作灵活性。

4. 封隔器的安装和拆卸不需要对连续油管进行表面操作，从而延长了系统的水平延伸范围。

5. 封隔器下方的传感器可以检测到处理过程中的压力突破，这通常是由于套管周围水泥质量不足造成的。

6. 由于在泵送过程中选择性地应用处理液和进行压力监测，与传统系统相比，流体量通常更小，因此更具成本效益。

目前，CHALLENGER 系统兼容 4.5 英寸油管/套管，可承受高达 10,000 psi 的井下环境压力和 320°F (160°C) 的温度。

发现
常规试井作业涉及根据井况以不同配置设置钢丝和连续油管。这样可以根据需要完成氮气提升、通过连续油管进行酸化刺激、仪表设置和通过钢丝回收等任务。

DISCOVERY 是一款专为油井测试而设计的全电动连续油管输送工具。其独特的设计允许在一次作业中完成累积封闭地层测试、井流、酸化刺激或氮气提升。

通过在盘管上重新定位 e-DST 工具来选择性地刺激特定区域，无需花费大量金钱进入井内，也无需预先规划流量测试持续时间。DISCOVERY 的氮气提升功能有助于测试低井底压力井，提高操作期间的安全性和灵活性，因为封隔器上方始终有循环可用。DISCOVERY 能够在一次运行中多次将井从死井状态转换为活井状态，从而为井测试操作提供了前所未有的控制和效率。

DISCOVERY 配备多组封隔器和电动关井阀，不仅节省大量时间，而且通过即时关井提高了测试质量，并在地面显示实时压力恢复曲线，以便持续评估油藏数据。这可以提前终止不成功的测试或延长有希望的测试。

该工具的卓越精度加上实时数据传输，可节省高达 60% 的时间和成本，并提供有关储层行为和刺激效果的宝贵见解。图 2展示了为操作员进行的一次此类测试，包括两次关闭和流动期以及一次刺激处理，所有这些都在一次运行中完成。

图2——e-DST工具在试井过程中获取的井下参数。

EXPLORER
最后，让我们来了解一下 EXPLORER，这是一种高流通式仪表接头，可实时监控任何盘管应用中的压力、温度、CCL、伽马射线、扭矩、张力、压缩、工具面和倾斜度等井下参数。凭借其大口径流通能力和实时数据传输，EXPLORER 可洞察井下状况，提高运营效率和可靠性。

如图3所示，模块化设计可无缝集成到传统和电动应用中。独特的设计还允许使用来自其他供应商的测井工具，从而提供更大的灵活性和按需能力，以满足不同的客户需求。双挡板止回阀 (DFCV) 位于连接器正下方。

图3——XPLORER仪器组件。

在一项具有挑战性的除垢应用中，EXPLORER 被用于监测实时井下钻头重量和扭矩，从而实现有效的磨削操作。实时压力和温度传感器的数据用于选择理想的硝化凝胶以提升和优化爆破操作。EXPLORER 能够检测到由于振动减小而导致的电机停转。总体而言，井下“观察”的能力确保了这项操作的成功，并使操作员能够重新获得井口通道和天然气产量。

总之，TAQA 的 CHALLENGER、DISCOVERY 和 EXPLORER 技术代表了石油和天然气行业的一次飞跃，开创了效率、可靠性和成本效益的新时代。凭借其创新特性和先进功能，这些尖端工具有望重新定义油井干预、油藏描述和生产优化的标准，推动可持续增长并最大限度地提高全球运营商的投资回报。

参考文献
SPE 13184按目标测试勘探井（作者 RS Barnum 和 S. Vela）。

SPE 164699通过实时井测试最大程度提高成本效率，作者：A. Awara、C. Mansilla 和 K. Fink。

SPE 181354首次使用声学遥测进行双区钻杆测试，使用多个可回收封隔器对两个独立储层进行单次测试，作者：G. Dolciani、S. Tiwari、O. Adewuya 和 A. Mousa 等人

PETSOC-96-77 4 使用同心盘管/DST 包的测试、处理、测试系统，作者：C. Hoyer、S. Fried 和 D. Sask。

Let's begin with CHALLENGER, an electric straddle tool representing a significant leap in coiled tubing-conveyed multizone isolation for well stimulation, selective chemical placement, and diagnostics applications.

This enables the treatment of perforations, inflow control devices (ICDs), screens, and other relevant zones to boost production, apply water control chemicals, administer scale treatments, and conduct similar operations. This fully electric-operated tool ensures seamless communication between downhole operations and surface control, enabling real-time monitoring of well data to enhance treatment effectiveness and ensure 100% placement verification.

The CHALLENGER straddle tool's real-time, two-way communication system facilitates continuous monitoring of downhole pressure and temperature within the isolated zone, ensuring accurate placement verification throughout the injection treatment process. Real-time downhole sensor readouts enable on-the-fly decision-making based on actual observations, while precise depth control ensures optimal packer placement and treatment fluid distribution.

During a single operation, the CHALLENGER system was employed to acid-stimulate seven perforations within a carbonate reservoir, all accomplished in a single run. Precise depth control was imperative for setting the packers, especially given the short 2-ft blank pipe sections separating the perforation intervals. With multiset elements, multiple zones can be independently isolated and treated in a single run, streamlining operations and reducing stimulation costs by up to 90%.

Additionally, the CHALLENGER electric straddle tool offers unparalleled control and versatility. Its electrically activated packers eliminate the need for hydraulic or mechanical manipulation, minimizing wear on coiled tubing and reducing operational complexity.

In one application, CHALLENGER was used to investigate the status (open or closed) of ten ICDs. The capability to maintain the packers in a set position without requiring pumping through the coiled tubing was crucial for determining the status of the ICDs by monitoring the trapped pressure between the packers. Confirmation of the position of all ten ICDs was achieved in a single run.

Given the extended horizontal reach of the well, the CHALLENGER system was well-suited for the task, as no additional force manipulation from the surface was necessary to set and unset the packers.

As shown in Fig. 1, the tool comprises multiple modules, including two packer elements, valves, a tension/compression sub, an electronics module, and a CCPL for detecting casing collars and perforations, the integral downhole system is controlled electrically from the surface through the coiled tubing's acid-resistant internal cable. The distance between the two packers is adjustable, with fluid pumped through the coiled tubing exiting between them. Pressure and temperature sensors above, between, and below the packers continually relay real-time information to the surface.

Fig. 1—CHALLENGER electric straddle components.

The synergy of electric packer activation and sensor placement yields distinctive advantages over conventional systems, including:

1. Uninterrupted downhole pressure diagnostics between packers, as there's no need to pump through the coiled tubing for packer activation.

2. Packers remain set when pumping through the coiled tubing stops, enabling monitoring of pressure decline curves to gauge the reservoir's response to treatment.

3. Individual activation of one or both mechanical packers for enhanced operational flexibility.

4. Surface manipulation of the coiled tubing is unnecessary for packer setting and un-setting, extending the system's horizontal reach.

5. The sensor below the packers can detect pressure breakthroughs during treatment, often caused by inadequate cement quality around the casing.

6. Due to selective treatment fluid application and pressure monitoring during pumping, fluid volumes are typically smaller and thus more cost-effective compared to conventional systems.

Currently, the CHALLENGER system is compatible with 4.5-in. tubing/casing, and can withstand downhole ambient pressures of up to 10,000 psi and temperatures of 320°F (160°C).

DISCOVERY
Conventional well testing operations involve setting up slickline and coiled tubing in different configurations based on the well conditions. This allows for tasks such as nitrogen lifting, acid stimulation via coiled tubing, gauge setting, and retrieval via slickline to be completed as needed.

DISCOVERY is a fully electric-operated coiled tubing-conveyed tool designed for well testing. Its unique design allows for buildup shut-in formation testing, well-flowing, acid stimulation, or nitrogen lift in a single-run operation.

By selectively stimulating specific zones through repositioning the e-DST tool on coiled tubing, the need for costly trips into the well is eliminated, and there's no longer a necessity to preplan flow test durations. DISCOVERY's nitrogen lifting feature facilitates testing of low bottomhole pressure wells, enhancing safety and flexibility during operations as circulation is always available above the packer. With the ability to transfer the well from dead to live status multiple times in a single run, DISCOVERY offers unprecedented control and efficiency in well testing operations.

With a multi-set packer and an electric shut-in valve, DISCOVERY not only saves significant time but also enhances test quality by allowing for instant shut-in of the well, with real-time pressure buildup curve display at the surface for continuous reservoir data evaluation. This enables early termination of unsuccessful tests or prolongation of promising ones.

The tool's superior accuracy, coupled with real-time data transmission, offers up to 60% time and cost savings and provides invaluable insights into reservoir behavior and stimulation effectiveness. Fig. 2 illustrates one such test conducted for an operator, including two shut-in and flow periods and one stimulation treatment, all in a single run.

Fig. 2—Selected downhole parameters acquired by the e-DST tool during well testing.

EXPLORER
Finally, let's explore EXPLORER, a high flow-thru instrumentation sub that enables real-time monitoring of downhole parameters such as pressure, temperature, CCL, gamma ray, torque, tension, compression, tool face, and inclination in any coiled tubing application. With its big-bore flow-thru capability and real-time data transmission, EXPLORER provides insights into downhole conditions, enhancing operational efficiency and reliability.

As shown in Fig 3, modular design allows for seamless integration into both conventional and electric applications. The unique design also allows for logging tools from other suppliers, offering increased flexibility and on-demand capability to meet diverse customer needs. The double flapper check valve (DFCV) is right below the connector.

Fig. 3—EXPLORER instrumentation components.

In one challenging descaling application, EXPLORER was deployed to monitor the real-time downhole weight on bit and torque, allowing for an effective milling operation. Data from the real-time pressure and temperature sensors was used to select the ideal nitrified gel for lifting and optimizing the blasting operation. EXPLORER was able to detect the motors stalling due to decreased vibration. Overall, the ability to “see” downhole ensured the success of this operation and allowed the operator to regain well access and gas production.

In conclusion, TAQA's CHALLENGER, DISCOVERY, and EXPLORER technologies represent a leap in the oil and gas industry, ushering in a new era of efficiency, reliability, and cost-effectiveness. With their innovative features and advanced capabilities, these cutting-edge tools are poised to redefine the standards of well intervention, reservoir characterization, and production optimization, driving sustainable growth and maximizing returns on investment for operators worldwide.

References
SPE 13184 Testing Exploration Wells by Objectives by R.S. Barnum and S. Vela.

SPE 164699 Maximizing Cost Efficiencies Through Real-Time Well Testing by A. Awara, C. Mansilla, and K. Fink.

SPE 181354 First Dual-Zone Drillstem Test With Acoustic Telemetry Using Multiple Retrievable Packers for Single-Trip Testing of Two Independent Reservoirs by G. Dolciani, S. Tiwari, O. Adewuya, and A. Mousa, et al.

PETSOC-96-774 Test, Treat, Test System Using a Concentric Coiled Tubing/DST Package by C. Hoyer, S. Fried, and D. Sask.