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Efficiency estimation of horizontal well completion for low reserves density areas in carbonate reservoirs

UDK: 622.276.1/.4:552.54
DOI: 10.24887/0028-2448-2019-8-94-98
Key words: carbonate reservoir, well completion, horizontal well, low density reserves
Authors: V.N. Vlasov (Zarubezhneft JSC, RF, Moscow), A.V. Chorniy (Zarubezhneft JSC, RF, Moscow), D.A. Popov (VNIIneft JSC, RF, Moscow), E.A. Sadreev (VNIIneft JSC, RF, Moscow), I.V. Tkachev (VNIIneft JSC, RF, Moscow), I.O. Khodakov (VNIIneft JSC, RF, Moscow), E.V. Yudin (Gazpromneft NTC LLC, RF, Saint-Petersburg)

Low efficiency development areas of carbonate reservoir by traditional methods are located in Central Khoreyver Uplift region. In the main such areas are observed in formation D3fmIV, that widely propagate on the many oil fields of this region. This formation has high degree of compartmentalization and heterogeneity of reservoir properties. Such facts make difficult development of formation D3fmIV by vertical wells. Thus, application of more complicate well completion technologies may increase development efficiency of the such areas. This paper presents analysis of modern well completion technologies for low density reserves area development, selection criteria for pilot areas, efficiency estimation for selected pilot areas by simulation model. Identification of oil fields that have sufficient amount reserves located in low density reserves areas was carried out based on routine data collection during production period and production logging analysis. Further, field, that has high degree of exploration maturity and surface facilities opportunity, was selected for pilot areas estimation. Pilot area selection carried out based on criteria associated sufficient amount reserves presence, non-depleted reservoir pressure and availability of well test and production logging data for reduction of risk. Efficiency estimation of complicate well completion technology application was carried out by analytical methods and simulation model with local grid refinement and taking into account well test and production logging data. Start parameters of wells with complicate completion, estimated by simulation model with local grid refinement good match up with results calculated by analytical methods. In result “Fishbone” technology became the most effective for development of high compartmentalization and heterogeneous carbonate reservoir. The main advantage of this technology in comparison with multi-fractured horizontal well is unlimited effect duration. Commonly known fracture stimulation duration usually continue 2-3 years. However, application “Fishbone” technology for oil fields located in Central Khoreyver Uplift region is very limited due to absent in local market. In result, multi-fractured horizontal well completion technology was recommended for efficiency increasing of low density reserves areas development. The most efficient technologies are determined for low density reserves areas located in Central Khoreyver Uplift region: the most efficient well completion and its parameters was identified with taking into account technical limits. Developed workflow may be used for fields with low density reserves areas located in other regions.

References

1. Karpov V.B., Parshin N.V., Ryazanov A.A., Advanced development of hard-to-recover reserves using multistage hydraulic fracturing (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2016, no. 3, pp. 96–100.

2. BazitovM.V., Golovko I.S. , D.A. Konosov et al., First fishbone well drilling at Vankorskoe field (In Russ.), SPE 176510-MS, 2015.

3. Algeroy J., Pollock R., Equipment and operation of advanced completions in the M-15 Wytch Farm multilateral well, SPE 62951-MS, 2000.

4. Dossary A.S., Mahgoub A.A., Challenges and achievements of drilling maximum reservoir contact (MRC) wells in Shaybah field, SPE 85307-MS, 2003.

5. Bouldin B., Turner R., Bellaci I. et al., Intelligent completion in laterals becomes a reality, SPE 183949-MS, 2017.

6. Dulaijan A., Shenqiti M., Ufondu K. et al., A decade of experience using intelligent completions for production optimization and water shut-off in multilateral wells in the world's largest oilfield, SPE 184629-MS, 2017.

7. Liu Hai, Luo Yin, Li Xianwen et al., Advanced completion and fracturing techniques in tight oil reservoirs in Ordos Basin: A workflow to maximize well potential, SPE 158268-MS, 2012.

8. Zaikin I.P., Kempf K.V., Shkarin D.V., Experience in constructing a multilateral well in Zarubezhneft JSC (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2017, no. 8, pp. 21–24.

9. Bagmanov R.D., Fedorchenko G.D., Afanas'ev I.S., Ayushinov S.P., Challenges of horizontal well drilling technology implementation on carbonate reservoirs in Zarubezhneft JSC (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2016, no. 6, pp. 72–86.

10. Rice J.K., Jorgensen T., Waters J.W., First installation of efficient and accurate multilaterals stimulation technology in carbonate reservoir, SPE 171804-MS, 2014.

11. Akhkubekov A.E., Vasiliev V., Acid tunneling technology: Application potential in Timano-Pechora carbonates (In Russ.), SPE 135989-MS, 2010.

12. Elliott S., Tethys petroleum on radial drilling technology case history: North Urtabulak, URL: https://rogtecmagazine.com/tethys-petroleum-on-radial-drilling-technology-case-history-north-urtabul...

Low efficiency development areas of carbonate reservoir by traditional methods are located in Central Khoreyver Uplift region. In the main such areas are observed in formation D3fmIV, that widely propagate on the many oil fields of this region. This formation has high degree of compartmentalization and heterogeneity of reservoir properties. Such facts make difficult development of formation D3fmIV by vertical wells. Thus, application of more complicate well completion technologies may increase development efficiency of the such areas. This paper presents analysis of modern well completion technologies for low density reserves area development, selection criteria for pilot areas, efficiency estimation for selected pilot areas by simulation model. Identification of oil fields that have sufficient amount reserves located in low density reserves areas was carried out based on routine data collection during production period and production logging analysis. Further, field, that has high degree of exploration maturity and surface facilities opportunity, was selected for pilot areas estimation. Pilot area selection carried out based on criteria associated sufficient amount reserves presence, non-depleted reservoir pressure and availability of well test and production logging data for reduction of risk. Efficiency estimation of complicate well completion technology application was carried out by analytical methods and simulation model with local grid refinement and taking into account well test and production logging data. Start parameters of wells with complicate completion, estimated by simulation model with local grid refinement good match up with results calculated by analytical methods. In result “Fishbone” technology became the most effective for development of high compartmentalization and heterogeneous carbonate reservoir. The main advantage of this technology in comparison with multi-fractured horizontal well is unlimited effect duration. Commonly known fracture stimulation duration usually continue 2-3 years. However, application “Fishbone” technology for oil fields located in Central Khoreyver Uplift region is very limited due to absent in local market. In result, multi-fractured horizontal well completion technology was recommended for efficiency increasing of low density reserves areas development. The most efficient technologies are determined for low density reserves areas located in Central Khoreyver Uplift region: the most efficient well completion and its parameters was identified with taking into account technical limits. Developed workflow may be used for fields with low density reserves areas located in other regions.

References

1. Karpov V.B., Parshin N.V., Ryazanov A.A., Advanced development of hard-to-recover reserves using multistage hydraulic fracturing (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2016, no. 3, pp. 96–100.

2. BazitovM.V., Golovko I.S. , D.A. Konosov et al., First fishbone well drilling at Vankorskoe field (In Russ.), SPE 176510-MS, 2015.

3. Algeroy J., Pollock R., Equipment and operation of advanced completions in the M-15 Wytch Farm multilateral well, SPE 62951-MS, 2000.

4. Dossary A.S., Mahgoub A.A., Challenges and achievements of drilling maximum reservoir contact (MRC) wells in Shaybah field, SPE 85307-MS, 2003.

5. Bouldin B., Turner R., Bellaci I. et al., Intelligent completion in laterals becomes a reality, SPE 183949-MS, 2017.

6. Dulaijan A., Shenqiti M., Ufondu K. et al., A decade of experience using intelligent completions for production optimization and water shut-off in multilateral wells in the world's largest oilfield, SPE 184629-MS, 2017.

7. Liu Hai, Luo Yin, Li Xianwen et al., Advanced completion and fracturing techniques in tight oil reservoirs in Ordos Basin: A workflow to maximize well potential, SPE 158268-MS, 2012.

8. Zaikin I.P., Kempf K.V., Shkarin D.V., Experience in constructing a multilateral well in Zarubezhneft JSC (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2017, no. 8, pp. 21–24.

9. Bagmanov R.D., Fedorchenko G.D., Afanas'ev I.S., Ayushinov S.P., Challenges of horizontal well drilling technology implementation on carbonate reservoirs in Zarubezhneft JSC (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2016, no. 6, pp. 72–86.

10. Rice J.K., Jorgensen T., Waters J.W., First installation of efficient and accurate multilaterals stimulation technology in carbonate reservoir, SPE 171804-MS, 2014.

11. Akhkubekov A.E., Vasiliev V., Acid tunneling technology: Application potential in Timano-Pechora carbonates (In Russ.), SPE 135989-MS, 2010.

12. Elliott S., Tethys petroleum on radial drilling technology case history: North Urtabulak, URL: https://rogtecmagazine.com/tethys-petroleum-on-radial-drilling-technology-case-history-north-urtabul...


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