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Following the successful completion of field trials and comprehensive maintenance testing of the Pangolin Cross-Motor RSS in Wushenqi Oilfield, this core equipment—carrying the company’s ambitions for deep earth exploration—was immediately deployed to the Changqing Oilfield to begin its combat journey.
On November 8, exciting news arrived from the Longdong Block of Changqing: the system successfully completed drilling operations on a designated well! As the first well officially drilled using our company’s Pangolin RSS, this operation not only delivered a perfect score with impressive data but also fired the critical opening shot for market application through efficient collaboration and hardcore capability, establishing a solid foundation and benchmark for large-scale operations to follow.
First Battle, Decisive Victory: Hardcore Data Proves Value
This operation was significant; it was a practical translation of the Wushenqi Oilfield test results and a critical test of the Pangolin RSS's operational capabilities. The drilling section targeted the 1988m–3533m interval, with a horizontal section length of 1545 meters. Such a scale poses significant challenges under the complex geological conditions of the Longdong Block. However, the Pangolin system silenced doubts by achieving a 'one-trip' successful completion.
Throughout the operation, the tool's performance was flawless:
- Downhole circulation time: 114 hours
- Drilling time: 80 hours
- Average ROP (Rate of Penetration): 19.1 m/h
- Total operation time: Only 4.5 days
Crucially, the 'RSS + Near-bit Gamma + MWD' assembly ran stably throughout, with zero errors in downlink commands and zero failures. This solid data confirms the system's reliability and highlights the milestone value of this first commercial well.
Overcoming Multiple Challenges through Collaborative Effort
Shale oil extraction in the Changqing Longdong Block is a known industry challenge. Geologically, the block favors an aggressive drilling mode where high drilling speeds lead to intense downhole vibration. The main target layer, the Chang 7 Member of the Triassic Yanchang Formation, is typically very thin (often a few meters to over ten meters, sometimes only 1–2 meters), making it prone to formation exits and requiring frequent inclination adjustments to ensure precision. Some formations also exhibit extremely poor drillability, with local ROP dropping as low as 8 min/m, greatly increasing difficulty.
Facing this severe environment, our company’s team collaborated efficiently with Halliburton. Through clear division of labor and close cooperation, the teams studied geological data in advance, simulated the drilling process repeatedly, and formulated emergency plans. By precisely selecting the optimal Bottom Hole Assembly (BHA) based on block characteristics, a solid foundation was laid for success.
Simultaneously, the technical advantages of the Pangolin RSS were key to breaking through these difficulties. The exclusive 'RSS + Near-bit Gamma' solution placed the mud motor below the MWD, keeping the lower drill tool length to 8.8 meters. Compared to traditional solutions, this shortened the zero-length by nearly 20 meters, significantly improving measurement precision while simultaneously enhancing safety and efficiency. Furthermore, the near-bit gamma product featured optimized structure and hardware compared to the previous version, boasting vastly improved anti-vibration performance and enhanced Azimuthal Gamma sector precision for clearer identification, perfectly adapting to the block's intense vibrations and precise steering needs.
Review, Maintenance, and Re-deployment
This initial victory is not the finish line, but the starting point for market application. Following the completion of this well, the tools will immediately be returned to the facility for comprehensive maintenance. Through detailed disassembly, precise inspection, and professional maintenance, we ensure the equipment is in peak condition for the next mission.
The complete success of this first official commercial well not only demonstrates the superior quality of the Pangolin RSS but also highlights the collaborative strength and technical service capabilities of our company and the Halliburton professional team. From the technical verification in Wushenqi Oilfield to the combat victory in the Longdong Block, every step embodies the team's sweat and wisdom. Moving forward, we will use this valuable experience to continuously optimize technical solutions and improve our service system, striving to deliver more impressive results in future market applications and expanding the use of the Pangolin RSS in deeper, more complex formations.
