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Stig-Arne Kristoffersen
Stig-Arne Kristoffersen

This document presents several untested play models in oil and gas exploration blocks in the Norwegian North Sea. It identifies potential traps and leads within different stratigraphic levels, including the Palaeocene and Jurassic sections. Seismic data is analyzed to illustrate features indicating potential hydrocarbon reservoirs. However, the document notes that more seismic data would be needed to fully evaluate the salt-related traps. Main risks to the identified prospects include uncertainty regarding both trap integrity and hydrocarbon source rocks.

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Play models in Quadrants 7 and 8 in Norwegian North Sea This presenta,on is made to give some few examples of tested and untested play models in the North Sea. No accurate loca,on is given in both stra,graphic nor XY coordinates. Valioso Ltd and its authors is not to be held responsible for any inaccuracies and errors in material presented herein, and therefore not responsible for any ac,ons by any party based on these ideas presented in this presenta,on. A A B B C C D D
Along Reke Fault zone several minor leads are found at Upper Jurassic level. There are also poten,al within Palaeocene and Upper Cretaceous sec,on within previous APA 2006 acreage east of Block 7/8. Main risks associated with these leads are source and trap integrity. Explora,on well 8/10-足1 was drilled on a gentle salt dome structure about 12 km west of the Ula Field on the S淡rvestlandet High. The objec,ves were to test Ter,ary and Mesozoic horizons. More speci鍖cally, the well should test the Ter,ary Miocene sec,on equivalent to the gas-足bearing sand sec,on in well 2/3-足1 (35 miles southeast), Eocene sands which had minor gas shows in well 7/8-足1 (25 miles northwest) and with oil shows in the Shell 1/3-足1, Palaeocene sands produc,ve in the Cod Field (25 miles east), fractured Upper Cretaceous limestone with condensate and gas shows in well 1/3-足1 (20 miles southwest), and Jurassic and Triassic sands that were very porous and permeable in well 7/8-足1. The laaer also had small shows in wells 7/8-足1 and 9/4-足1 (50 miles northwest). We therefore believe there are poten,al lee in Palaeocene sec,on as well as other stra,graphic levels in Ter,ary sec,on. Both a structural and stra,graphic lead can be iden,鍖ed within Block 8/10 as well as a structural trap at Jurassic level. Main risks are both trap integrity as well as source for these leads/traps. Salt related traps are in need of beaer seismic imaging, and therefore good seismic quality is cri,cal for these trap types. We judge Blocks 7/9 and 8/7 to have poten,al for salt induced associated traps within Palaeocene as well as at Jurassic level. Several traps have been iden,鍖ed and in excess of 5 leads have been iden,鍖ed within these 2 blocks. Within Block 7/2 there are several plays within Upper Cretaceous and Lower Palaeocene levels. These plays have been presented in previous concession works performed by Valioso Ltd. Valioso Ltd has iden,鍖ed poten,al leads with volumes in Place ranging from 5-足45 MSm3 for these traps.
Seismic line A-足A illustra,ng well 8/1-足1 and down 鍖ank poten,al from this well loca,on in open acreage area as well as within eastern part of Block 8/1. A A
Rela,ve Acous,c Impedance line of same line as above. Blue color indicate low acous,c Impedance areas, red indicate high acous,c impedance areas. A A
B B Amplitude seismic line through well loca,on 8/9-足1, a dry well.
B B Rela,ve Acous,c Impedance of same line as above, blue low and red high acous,c impedance areas. Poten,al play within sequence with rela,vely low AI values. Stra,graphic trap.
C C Amplitude Seismic line through well 2/2-足2.
C C AI Seismic line through well 2/2-足2.
Detail from Area A in AI line in previous Figure.
Amplitude seismic line within block 7/1 illustrate several play models (Play I through VII) including the ones illustrated in map above where features of channels and hummocky internal geometries within central sec,on of this line can be seen. Play I Play II Play III Play IV Play V Play VI D D Play VII
For further details you can contact Valioso Ltd and its author for further discussions and consulta,ons. Leading Provider of Counsel for Technology, Science and Business Development. Promote bi-足lateral business between Sweden and Ukraine. Grant me the serenity to accept the things I cannot change, the courage to change the things I can, and the wisdom to know the di鍖erence. Reinhold Niebhur We work with Subsurface evalua,on, geo models, development plans, Geospa,al Analysis, Geoscien,鍖c applica,ons, Data management and processing services. www.valioso.rocks S,g-足Arne Kristo鍖ersen Director Valioso Ltd Email: Sak@ec-足ba.com Skype: sak-足path鍖nder Linkedin: hap://se.linkedin.com/in/s,garne/ Facebook: hap://www.facebook.com/ukranova

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q7final

  • 1. Play models in Quadrants 7 and 8 in Norwegian North Sea This presenta,on is made to give some few examples of tested and untested play models in the North Sea. No accurate loca,on is given in both stra,graphic nor XY coordinates. Valioso Ltd and its authors is not to be held responsible for any inaccuracies and errors in material presented herein, and therefore not responsible for any ac,ons by any party based on these ideas presented in this presenta,on. A A B B C C D D
  • 2. Along Reke Fault zone several minor leads are found at Upper Jurassic level. There are also poten,al within Palaeocene and Upper Cretaceous sec,on within previous APA 2006 acreage east of Block 7/8. Main risks associated with these leads are source and trap integrity. Explora,on well 8/10-足1 was drilled on a gentle salt dome structure about 12 km west of the Ula Field on the S淡rvestlandet High. The objec,ves were to test Ter,ary and Mesozoic horizons. More speci鍖cally, the well should test the Ter,ary Miocene sec,on equivalent to the gas-足bearing sand sec,on in well 2/3-足1 (35 miles southeast), Eocene sands which had minor gas shows in well 7/8-足1 (25 miles northwest) and with oil shows in the Shell 1/3-足1, Palaeocene sands produc,ve in the Cod Field (25 miles east), fractured Upper Cretaceous limestone with condensate and gas shows in well 1/3-足1 (20 miles southwest), and Jurassic and Triassic sands that were very porous and permeable in well 7/8-足1. The laaer also had small shows in wells 7/8-足1 and 9/4-足1 (50 miles northwest). We therefore believe there are poten,al lee in Palaeocene sec,on as well as other stra,graphic levels in Ter,ary sec,on. Both a structural and stra,graphic lead can be iden,鍖ed within Block 8/10 as well as a structural trap at Jurassic level. Main risks are both trap integrity as well as source for these leads/traps. Salt related traps are in need of beaer seismic imaging, and therefore good seismic quality is cri,cal for these trap types. We judge Blocks 7/9 and 8/7 to have poten,al for salt induced associated traps within Palaeocene as well as at Jurassic level. Several traps have been iden,鍖ed and in excess of 5 leads have been iden,鍖ed within these 2 blocks. Within Block 7/2 there are several plays within Upper Cretaceous and Lower Palaeocene levels. These plays have been presented in previous concession works performed by Valioso Ltd. Valioso Ltd has iden,鍖ed poten,al leads with volumes in Place ranging from 5-足45 MSm3 for these traps.
  • 3. Seismic line A-足A illustra,ng well 8/1-足1 and down 鍖ank poten,al from this well loca,on in open acreage area as well as within eastern part of Block 8/1. A A
  • 4. Rela,ve Acous,c Impedance line of same line as above. Blue color indicate low acous,c Impedance areas, red indicate high acous,c impedance areas. A A
  • 5. B B Amplitude seismic line through well loca,on 8/9-足1, a dry well.
  • 6. B B Rela,ve Acous,c Impedance of same line as above, blue low and red high acous,c impedance areas. Poten,al play within sequence with rela,vely low AI values. Stra,graphic trap.
  • 7. C C Amplitude Seismic line through well 2/2-足2.
  • 8. C C AI Seismic line through well 2/2-足2.
  • 9. Detail from Area A in AI line in previous Figure.
  • 10. Amplitude seismic line within block 7/1 illustrate several play models (Play I through VII) including the ones illustrated in map above where features of channels and hummocky internal geometries within central sec,on of this line can be seen. Play I Play II Play III Play IV Play V Play VI D D Play VII
  • 11. For further details you can contact Valioso Ltd and its author for further discussions and consulta,ons. Leading Provider of Counsel for Technology, Science and Business Development. Promote bi-足lateral business between Sweden and Ukraine. Grant me the serenity to accept the things I cannot change, the courage to change the things I can, and the wisdom to know the di鍖erence. Reinhold Niebhur We work with Subsurface evalua,on, geo models, development plans, Geospa,al Analysis, Geoscien,鍖c applica,ons, Data management and processing services. www.valioso.rocks S,g-足Arne Kristo鍖ersen Director Valioso Ltd Email: Sak@ec-足ba.com Skype: sak-足path鍖nder Linkedin: hap://se.linkedin.com/in/s,garne/ Facebook: hap://www.facebook.com/ukranova