RESEARCH ON SCREW PUMP RUNNING CONDITION TESTING TECHNIQUE

In order to solve the problem of diagnosing the running condition of the surface-drive screw pump, the screw pump well condition testing technology has been investigated, the instrument for testing screw pump well condition and the new type of polished rod clamp of screw pump have been developed. This technology is consisted of condition testing and playback diagnosis. Without any influence to the production, it can rapidly and accurately get the load and torque on the polished rod of the screw pump, and provide accurate and reliable data for diagnosing condition of the screw pump well. This technology has been used in 10 wells (28 times), and the successful rate is more than 90%. The application of this technology will be helpful to improve the management of the screw pump well, and it has provided powerful monitoring means for the safe and effective running of the screw pump well.