Research and Application of Efficient Dual-flowmeter Testing and Adjusting Technique

Since 2002, A Oilfield has successively researched and applied efficient measurement and adjustment technologies such as injection well storage-based and direct-reading methods. These technologies have been widely promoted across various oil extraction plants. However, during practical implementation, certain issues were identified with both of these technologies. In light of this, A Oilfield further developed the direct-reading dual-flow measurement and adjustment technology, which has shown promising results in on-site applications. The dual-flow high-efficiency measurement and regulation technology has been extensively adopted and implemented in prominent Chinese oilfields, including A, B, and C. The regulation system is composed of PC testing and adjusting software, ground control instrument, underground testing and adjusting apparatus, single core cable and adjustable plug, and so on. Among them, the assembly circuit board installed in the down-hole host is the core part of communicating and collecting data. The fundamental function of the ground control instrument is to supply direct current power with stable pressure and communicate the downhole instruments with the surface PC engine and every function of the instrument may be realized through the PC testing and adjusting software. The efficient dual-flowmeter testing and adjusting technique with good adaptability, maneuverability, and high data reliability could be used for various eccentric water distribution strings, and the flow rate of the single layer could be measured using a non-collecting test technique with less inter-layer interference. The magnetic induction components should be applied and the electric fishing and testing instrument should be developed to improve the fishing ratio of the plug in the future. The most important thing is to establish unified, quantified, and operational standards.