A large onshore oil field in Saudi Arabia is supported byrnperipheral water injection that started 40 years ago. Parts ofrnthe field are becoming mature with increasing waterrnproduction. This poses a challenge as well production isrndeclining and/or, in some cases, ceasing to flow as water cutrnincreases, leaving in-place oil potential that needs to bernrecovered. Increased water production has another side effectrnof increasing operating cost to handle and recycle unwantedrnadditional produced water. To reduce water production andrnreactivate the dead wells, several options were implemented,rnincluding facilities operational changes, workovers, and riglessrnchemical and mechanical techniques.rnOne of the easiest and most cost-effective techniques that hasrnbeen used in the field to reduce water production is thernapplication of the rig-less Through-Tubing Bridge Plugsrn(TTBP). This paper presents 15 years’ experience of thernapplication of TTBP in vertical open and cased holes as wellrnas slightly deviated wells. Data were reviewed for more thanrn130 wells that had water shutoff jobs using TTBP. The paperrndiscusses results and factors, and reservoir as well asrncompletion parameters that contribute to the success of thisrnrig-less water shutoff technique. These factors includernpermeability thickness and productivity index, wellrncompletion, very high permeability intervals, reservoirrnpressure, tight porosity intervals, and the flowing wellheadrnpressure. Discussion of the economics of the application isrnalso presented.
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