000 02434nmc a2200265 4500
005 20260520005605.0
008 260224s2001 xxu ing
041 _aInglés
245 0 0 _aUNDERBALANCED EMWD-AP AT LA CONCEPCIÓN BLOCK, MARACAIBO BASIN, VENEZUELA
_bSPE 69496
260 _aDallas, Texas
_bSociety of Petroleum Engineers
_c2001
270 _a12/09/06 ; 09/05/2003
520 _aHigh deviation angle and a highly fractured carbonates reservoir with abnormally low pressures (depleted) were the greatest challenges in the drilling program to develop the deep objectives of La Concepción field. The development of an underbalanced drilling system was required to overcome the massive loss of circulation and associated problems. An electromagnetic down hole telemetry system was selected to allow the acquisition in real time of measurements of well bore inclination, annular bottom hole pressure and temperature. This system is not dependent of the circulating fluid nature (liquid, gas or a mix of them) to transmit the information up the hole via sonic waves. Consideration specific to this project ranged from simple ones, like the relationship between the formation pressure and the conditions and rate of injection of mud and nitrogen, to complex ones, like optimizing directional drilling trajectories, determining the minimum allowable equivalent circulating density to maintain stable wellbore, or establishing the minimum antenna height required to transmit the information from the bottom hole measurement tool to surface. A combination of all these equipment and techniques has enabled us to drill 5 re-entry well bores and four new wells. The new wells were drilled underbalanced but without directional control.
942 _cCONGTP
100 1 _aRomero, F.J.
_96150
100 1 _aPi, D.
_96151
100 1 _aCinquegrani, A.
_96152
111 2 _aLatin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina)
_95738
650 0 _aPerforación bajo balance
_92538
700 1 _aPi, D.
_96151
700 1 _aCinquegrani, A.
_96152
711 2 _aLatin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina)
_95738
800 1 _aRomero, F.J.
_96150
999 _c131005
_d131005
856 _uhttps://biblioteca.iapg.org.ar/ArchivosAdjuntos/LACPEC2001/Spe69496.pdf