Recently, the new liquid surface intelligent monitor developed and produced by the Aerospace Science and Technology Research Institute of China Aerospace Science and Technology has realized nearly 100 sets of small-scale promotion and application in Daqing Oilfield, Changqing Oilfield, Xinjiang Oilfield, Chongqing Shale Gas Well and Nanyang Oilfield. The first batch of promotion applications have signed nearly 3 million yuan. Among them, this product has successfully replaced imported products in Daqing Oilfield and has been highly recognized by users. It is expected to achieve large-scale promotion and application in the future.

  In the oilfield production and development, in order to rationally formulate and adjust the development plan of the oilfield, it is necessary to test the change of the pressure in the middle of the oil well layer after the oil well is stopped by certain means, that is, the pressure recovery of the oil well. At present, the main methods for monitoring pressure recovery include liquid level monitoring method, annulus test method and pump test method. Among them, the liquid level monitoring method is the most economical and the result is the most intuitive.

  The liquid level monitor mainly uses the principle of echo distance measurement to measure the depth of the downhole liquid at the wellhead. The monitor can be applied to the oil well exploration oil to understand the liquid level recovery, evaluate the oil well productivity and permeability; the oil well understands the dynamic liquid level and adjusts the drainage parameters; or the CBM well water level monitoring, drilling mud level monitoring, etc. .

  It is understood that the new liquid level monitor developed by the Aerospace Science and Technology has broken through a number of technical bottlenecks, effectively preventing the occurrence of blowout accidents, and solving the problems that the existing perforating technology cannot monitor the liquid properties and parameters in the wellbore in real time. The sound velocity error of the new liquid level monitor can reach less than 0.5%, and the liquid surface depth test error is less than 10 meters. The overall technical index is at the domestic leading level, and the product price is only about 20% of the imported products, and the competitive advantage is obvious.

  At the same time, the product is boldly technologically innovative on the basis of the traditional oil well level test, solving the core problems of high-voltage microphone, high-pressure firing and unattended high-reliability automatic calculation, fully realizing the high-pressure gas well level test. The real-time remote unmanned monitoring effectively reduces the risk of frequent on-site testing, saves a lot of labor costs, and provides independent and controllable technical support for the construction of smart oil fields in China.