Abstract
Although mud pumps are vital components of a drilling rig, their failures are frequent. The identification of technical condition of these high-pressure piston pumps is difficult. There are no reliable criteria for the assessment of mud pump condition. In this paper, faults of the pump valve module are identified by means of acoustic emission (AE) signals. The characteristics of these signals are extracted by wavelet packet signal processing. This method has been verified by experiments conducted on a NOV (National Oilwell Varco) -made triplex 14-P-220 mud pump (mounted in the drillship). The results show that the wavelet packet signal processing method can effectively extract the frequency band energy eigenvalues of the signals. Besides, some operational problems associated with high pressure piston mud pumps are presented. A non-invasive method for diagnosing the technical condition of such pumps is being developed at the Maritime University of Szczecin.
Highlights
The search for new gas and oil deposits in seas and oceans is carried out by specialized vessels equipped for drilling at great depths
In the acoustic emission (AE) source the function of amplitude changes in the stress field has a form of a unit/single peak, the sensor is placed in the pump body
The problems associated withwith failures of mud pumps installed on board board the drillship
Summary
The search for new gas and oil deposits in seas and oceans is carried out by specialized vessels equipped for drilling at great depths. Symptom is visible), compared signals in shipboard conditions may significantly diagnostic to traditional measurements (vibrations, pressures, temperature, etc.); Major advantages of AE-based diagnostics include: Applicability for most machines, regardless of their technical condition;. Failures depths to 3600 m and hole length of up to 12,000 m Such vessels, equipped with the latest systems. Drillinginfluids pumped an oil rig place downintoincreasingly the well by deeper high pressure mud pumps, the Exploration quest are of oil and gasfrom deposits takes waters, which is possible main element of the high‐pressure drilling fluid system, shown in. The process of drilling a hole in the ocean floor requires the use of special drilling fluids, which are primarily intended for taking away rock cuttings from under the drill bit and conveying them onto the surface. The installed onon drillship [4].[4]
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