SU~~~a DrNIi~gj Riser Wear: A Case Historỹ .?.PO=, Ph~!!@ P@~OIQUrn CO,:ndFLW. I-lall Jr., Maurer Engineering, lfIC. SPE Members -~1*. WWIAOC DrilllrKIConference. This peper wee prepemdfor preeentetionat the 1S'96SPE/lADC DrillingCaWerenoeheld in AmeIefdam,28 Februery-2 Merch 1SS5 mie pper weeeekuedforpresentationby an SPE/lADCPmgrem(%mmlneetoibwingreviewof Information wnteined in an abetreotwbmined =~. *not been revkwed by theIntwmuonel AwoobtbncdOrllMng by the euthor(a). Contenteof the peper, meterlel,ee preeented,doee not Catrdomof the Sodetyof PetroleumEn@wereenduee ubJeottooorreotk+I bythewthc@). The newwerily refteoteny poeitiond the SPE or IADC, their ofHoere, or membere.Pepere prewnted et SPHINX meetingeere wbjeotto publiwtbn revk#by EditorlelCommSteeeofthe SPEend 1~.Pm~mqk~toen~dtititW~~e. Illuetmtbnemeynotbecepied.l%e abstmotehauld oonteinoonepbuwe dmowleqrnent d whereend bywhomthe peperie prwnntd WriteLilwuien, SPE, P.O. SoxS22SS6,Rkhenleon, TX7SOSNSSE, U.S.A. Telex, 162246 SPEUT. ABSTRACTWeer in subsea drilling risers and BOP equipmant while drilling can be an expansive problem. If the wear causes loss of riser integrity the risk to personnel and equipment is potentially significant due to the well control situation that could result. This papar presents information on a serious riser/BOP wear occurrence that resulted in serious well control problems and an expensive equipment repair. The case study presented here occurred in only 295 ft of water in a relatively short period of drilling time. The approximate cost of the resulting problems was in excess of US$3.5 million. This papar will also present a simpie model that can be used to estimate the wear in a riser and flax joint. The calculations in this paper will provide a means to detem"na the relative effects of such parameters as riser angle and tooljoint hardbanding abrasiveness. WRh this knowledge it is possible to develop an informed riser wear management program.