Zhongxian Hao
Manager
Research Institute of Petroleum Exploration & Development, PetroChina
Zhongxian Hao (Male, born 1981), Senior Engineer. Served as Principal Engineer at the Institute of Intelligent Control and Equipment Research. Research focuses on wellbore digitalization and advanced intelligent equipment for oil and gas production. Developed technologies include electric submersible direct-drive screw pumps and wired/wireless wellbore sensing systems for production wells. Currently responsible for leading several company-level projects in intelligent oilfield technologies.
Participates in
TECHNICAL PROGRAMME | Energy Technologies
Smart Infrastructure for the Future Energy Industry: Digitalisation & Innovation
Forum 18 | Digital Poster Plaza 4
27
April
15:30
17:30
UTC+3
There is more than 200 thousand pumping unit wells in CNPC, accurate and reliable downhole data is most important during oil production. Either Acoustic wave measurement of liquid level was not precise enough or the cable method was too expensive. The question was how to get the accurate downhole data and transmit it to the surface with low cost. This paper introduced the problems and solutions of the pilot test of the WWCTP in high water cut oil field .
WWCTP is a technology for monitoring the annulus pressure of pumping unit well and transmit to the ground wirelessly. In this technology, the down-hole pressure data was get by the pressure sensor, and the data can be transmitted to the surface through the rod, some typical wells were showed in this paper. For example, A well, with 1191 meters deep, a 57 mm diameter, 5.2 times/min stroke rate and 98.4% water cut, the WWCTP had been working stably for 4 months. But another well with almost the some condition, 1212 meters deep, a 57 mm diameter pump, 6 times per min stroke rate and 96.1% water cut, the signal is too weak and subtle to recognize. In total, more than 30 wells had been deployed, We found that there were many factors, such as pump size, well deliverability, could impact the data. Lots of optimization was carried out and finally realized stable wellbore Wireless Communication.
The pilot test shows that this technique had the advantages of a simple structure, reliable transmission, low cost and being free of periodic pump inspection. This technology was capable of wireless uploading in 1000 m deep well and capturing the accurate downhole pressure variation, also provides reference to optimize the production regime for low-production, low-efficiency and high-fluid-level wells.
This technology represents a new exploration in the acquisition of wellbore data. Furthermore, this technology's integrated cost is expected to decrease by more than 50% compared with wired data transmission, and has a broad application prospect.
Co-author/s:
Chenglong Liao, Engineer, Research Institute of Petroleum Exploration & Development, PetroChina.
WWCTP is a technology for monitoring the annulus pressure of pumping unit well and transmit to the ground wirelessly. In this technology, the down-hole pressure data was get by the pressure sensor, and the data can be transmitted to the surface through the rod, some typical wells were showed in this paper. For example, A well, with 1191 meters deep, a 57 mm diameter, 5.2 times/min stroke rate and 98.4% water cut, the WWCTP had been working stably for 4 months. But another well with almost the some condition, 1212 meters deep, a 57 mm diameter pump, 6 times per min stroke rate and 96.1% water cut, the signal is too weak and subtle to recognize. In total, more than 30 wells had been deployed, We found that there were many factors, such as pump size, well deliverability, could impact the data. Lots of optimization was carried out and finally realized stable wellbore Wireless Communication.
The pilot test shows that this technique had the advantages of a simple structure, reliable transmission, low cost and being free of periodic pump inspection. This technology was capable of wireless uploading in 1000 m deep well and capturing the accurate downhole pressure variation, also provides reference to optimize the production regime for low-production, low-efficiency and high-fluid-level wells.
This technology represents a new exploration in the acquisition of wellbore data. Furthermore, this technology's integrated cost is expected to decrease by more than 50% compared with wired data transmission, and has a broad application prospect.
Co-author/s:
Chenglong Liao, Engineer, Research Institute of Petroleum Exploration & Development, PetroChina.
