HOW TO SUPPORT THE BOREHOLE INSTABILITY PROBLEMS AND OPTIMIZE THE DRILLING WELL IN REAL TIME

Haddoum, Nadia; Sator, Salim; Bensenouci, Fethi; Boucherit, Mohamed; Belfar, Farid; Belhameche, Farid; Malla, Mohand Said

Revue de l'Algerian Petroleum Institute
Volume 5, Numéro 1, Pages 10-13
2016-07-15

How To Support The Borehole Instability Problems And Optimize The Drilling Well In Real Time

Authors : Haddoum Nadia . Sator Salim . Bensenouci Fethi . Boucherit Mohamed . Belfar Farid . Belhameche Farid . Malla Mohand Said .

Abstract

wells is still technically and economically challenging. The cost of well construction can exceed budget dramatically if drilling operations are plagued by wellboreinstability problems, excessive time and resources are needed to free stuck pipe, regain circulation, or clean the hole efficiently. In line with this statement, carbonate in Algeria revealed substantial difficulties when drilling. In addition to the consequent nonproductive time, wellbore quality and reservoir damages were the consequences of drilling these formations. Minimizing non-productive time is a complex task that requires thorough pre-spud planning to identify drilling risks and geological hazards and to develop contingency plans for handling those risks. To gain this knowledge and to implement it successfully requires a process for building a Mechanical Earth Model (MEM) and using it to provide timely information to decision makers. Based on the wellbore stability analysis, the mud weight for safe drilling can be planned founded on the mechanically stable mud weight window (from breakout/kick pressures to loss/breakdown pressures). Other essential concept for a wellbore stability study is a drill map which can guide drillers to drill a well quickly by using real time data, cost effectively by providing essential information such as mud weight window, drilling risks ahead as well as their identifications, detections, preventions and remedies.