NEW TECHNOLOGIES INCREASE DRILLING PERFORMANCE IN OMV PETROM. March 20, Bucharest

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Herbert Lyons
5 years ago
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1 NEW TECHNOLOGIES INCREASE DRILLING PERFORMANCE IN OMV PETROM March 20, Bucharest

2 Route to Drilling performance? Engineering could be the key! Engineering identify real drilling problems ( check deeper the offset wells); perform well concept selection meetings and engage all key contractors; apply the best technology for the best candidates ( will increase the people confidence); be open and trust in NEW technology & tools ( casing drilling, stand alone screen, swell packers, slim wells constructions, logging while drilling) where we have good candidates for these; team work ; involve more the Rig Contractor, Association & casing & cementing companies as well as engage drilling supervisors during planning stage. 2 Romania Upstream Conference 2013

3 Reasons for new technologies Cut drilling cost by: Drilling time reduction; Cluster rig site deviated, high deviated & horizontal wells; Slim wells. Qualitative wells by: Using proper drilling fluid systems; Performing good cementing operations; Proper completion based on reservoir properties. 3 Romania Upstream Conference 2013

4 Technologies applied Down hole motors & Rotary steerable system ( ~ 90% of activity): deviated, high deviated and horizontal wells. Good drill bits; especially PDC drill shoe to shoe section. Efficient drilling mud systems: Water based mud & Synthetic based mud. Running casing L 2 - Casing drilling ( 11 operations in last year): casing bit; casing running tool / casing drive system. Running casing L1 ( ~ 75% of operations): reamer shoe; casing running tool / casing drive system. 4 Romania Upstream Conference 2013

5 Technologies applied cntd. Casing bit Reamer shoe 5 Romania Upstream Conference 2013

6 Technologies applied cntd. Casing Running Tool ( CRT) / Casing Drive System( CDS): more flexibility while casing running; reduce running time. Remark: Casing Running Tool was used in around 90% of casing running operations except small rigs ( HH -75). 6 Romania Upstream Conference 2013

7 FACTS - 9 5/8 Casing drilling job 760 m vertical section drilled with 9 5/8 casing, TSH-Blue thread; 12 ¼ XCD3 Drillable bit; 9 5/8 x11 Non-Hard Faced Centralizers. ADVANTAGES Elimination of Casing Running Flat Time of the 9 5/8 casing; Better hole cleaning; Reduction of mud losses; Wellbore Strengthening; Safety. 7 Romania Upstream Conference 2013

8 Time break down comparison Casing while Drilling at 675 Tintea vs. Rotary Drilling at 679 bis Tintea 8 Romania Upstream Conference 2013

9 FACTS - Horizontal section realized by real time monitoring Down hole motor Logging while drilling ( Near Bit ipzig) 9 Romania Upstream Conference 2013

10 FACTS Stand alone screen & Swell packers on completion string 10 Romania Upstream Conference 2013

11 FACTS - Stand alone screen (SAS) & Swell packers(swp) on completion string 7 wells completed with SAS and SwP in last year, as an alternative of open hole gravel pack completion: pack on horizontal wells with long open hole section with high dog leg severity ( DLS); some of them produce with higher rate than was expected; all wells still produce with no sand problems. 11 Romania Upstream Conference 2013

12 FACTS - Horizontal shallow wells Horizontal wells: 15 wells drilled so far; Suplac Horizontal wells are Extended Reach Wells by definition (Measured Depth greater than twice the MD - TVD > 2 x TVD). 12 Romania Upstream Conference 2013

13 FACTS - Typical Horizontal Well Profile (Suplac) Top PN = 15.11m tvdss Top PN Expected thickness ~10m tvdss Possible depth of base PN Base PN Standoff = 2m tvdss OWC=-3m vtvdss 13 Romania Upstream Conference 2013

14 FACTS - Real time reaction for trajectory control Red curve latest proposed trajectory Green dashed DESIRED Build up from the starting m as much as possible to try to achieve the DESIRED well! 14 Romania Upstream Conference 2013

15 Conclusions Factors of success: efficiency increase; cost management alongside OMV PETROM values Professionalism, HSEQ. Pioneering, Partnership; 15 Romania Upstream Conference 2013

Casing Drilling Technology Implementation In Petrom

Casing Drilling Technology Implementation In Petrom Presentation Outline Background Overview of Petrom Casing Drilling achievements to date Benefits To Petrom from Casing Drilling Case History 228 Sotanga