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The first experience of geophysical studies in long horizontal wells with using ESP bypass system

Authors: R.K. Yarullin (Bashkir State University, RF, Ufa), A.S. Valiullin, M.S. Valiullin, I.N. Tikhonov PCF GIS Nefteservice LTD, RF, Ufa), R.N. Asmandiyarov, E.R. Nazargalin RN-Yuganskneftegas LLC, RF, Nefteyugask)

Key words: well logging, Y-tool, horizontal wells, multi-stage hydraulic fracturing.

Western Siberian and Volga region oil fields, as a rule, are characterized with low reservoir pressure and exploitation by the method of mechanized extraction, that does not allow to assess the productivity in steady mode of fluid output (extraction) (flow rate), that is easily implemented in gushing wells. That’s why, geophysical surveys (GS) are performed in overhaul periods, after stopping the well and extraction borehole equipment глушения скважин (поменял структуру предложения чуток). In that case, is sufficiently disrupted work mode of well and reservoir, depression and flow rate created with GS does not correspond to the operating mode. Increasing the number of horizontal wells shows the urgency of the problem of assessing the efficiency of the multistage hydraulic fracturing. To eliminate these restrictions can be applied the technology of ESP bypasses (Y-Tool), where the borehole equipment is delivered on the CT below the depth of descent pump in horizontal wellbore interval.

References
1. Valiullin R., Yarullin R., Yarullin A. et al., Razrabotka kriteriev vydeleniya rabotayushchikh intervalov v nizkodebitnykh gorizontal'nykh skvazhinakh
na osnove fizicheskogo eksperimenta i skvazhinnykh issledovaniy (Development of criteria for selection of operating intervals in low-rate horizontal wells based on physical experiments and well studies), Proceedings of Rossiyskaya tekhnicheskaya neftegazovaya konferentsiya i vystavka SPE
po razvedke i dobyche 2010 (Russian SPE Oil & Gas Technical Conference
and Exhibition on exploration and production in 2010), 2010, October
26–28, DOI 12.2118/136272-RU, URL: https://www.onepetro.org/ conference- paper/SPE-136272-RU.
2. Valiullin R.A., Yarullin R.K., Gordeev Ya.I., Maslov S.O., Peculiarities of field geophysical tests in running horizontal wells of the Upper Chonskoe oil and gas condensate field (In Russ.), Karotazhnik, 2012, V. 220, no. 10, pp. 12–29.
3. Valiullin R.A., Yarullin A.R., Glebocheva N.K., Tikhonov A.G., Peculiarities of logging in running horizontal wells at the late stage of oil field operation (In Russ.), Karotazhnik, 2010, V. 190, no. 1, pp. 5-16.
4. Murdygin R.V., Ganichev D.I., Mikhaylov A.G. et al., The experience of
the geophysical studies on determination of the profile and composition
of RN-Purneftegaz LLC horizontal wells stream (In Russ.), Neftyanoe
khozyaystvo = Oil Industry, 2010, no. 3, pp. 64–69.
5. Valiullin R.A., Yarullin R.K., Sharafutdinov R.F., Sadretdinov A.A., Presentday procedures of geophysical studies applied at the Russian fields
(In Russ.), Neft'. Gaz. Novatsii, 2014, no. 2, pp. 21–25.
6. Valiullin R.A., Yarullin R.K., Peculiarities of geophysical research in running horizontal wells (In Russ.), Vestnik Akademii nauk Respubliki Bashkortostan, 2014, V. 19, no. 1, pp. 21–28.
7. Yarullin R., Valiullin R., Sharafutdinov R., Mnogodatchikovye tekhnologii
issledovaniya gorizontal'nykh skvazhin. Tekushchee sostoyanie i opyt
primeneniya na mestorozhdeniyakh Rossii (Multi-sensor technologies for research the horizontal wells. Current status and application experience in
the Russian fields), Proceedings of Rossiyskaya tekhnicheskaya neftegazovaya konferentsiya i vystavka SPE po razvedke i dobyche (Russian SPE Oil & Gas Technical Conference and Exhibition on exploration and production in 2010), October, 2014, URL: http://www.russianoilgas.ru/ru/Sessions/5919/ 

Key words: well logging, Y-tool, horizontal wells, multi-stage hydraulic fracturing.

Western Siberian and Volga region oil fields, as a rule, are characterized with low reservoir pressure and exploitation by the method of mechanized extraction, that does not allow to assess the productivity in steady mode of fluid output (extraction) (flow rate), that is easily implemented in gushing wells. That’s why, geophysical surveys (GS) are performed in overhaul periods, after stopping the well and extraction borehole equipment глушения скважин (поменял структуру предложения чуток). In that case, is sufficiently disrupted work mode of well and reservoir, depression and flow rate created with GS does not correspond to the operating mode. Increasing the number of horizontal wells shows the urgency of the problem of assessing the efficiency of the multistage hydraulic fracturing. To eliminate these restrictions can be applied the technology of ESP bypasses (Y-Tool), where the borehole equipment is delivered on the CT below the depth of descent pump in horizontal wellbore interval.

References
1. Valiullin R., Yarullin R., Yarullin A. et al., Razrabotka kriteriev vydeleniya rabotayushchikh intervalov v nizkodebitnykh gorizontal'nykh skvazhinakh
na osnove fizicheskogo eksperimenta i skvazhinnykh issledovaniy (Development of criteria for selection of operating intervals in low-rate horizontal wells based on physical experiments and well studies), Proceedings of Rossiyskaya tekhnicheskaya neftegazovaya konferentsiya i vystavka SPE
po razvedke i dobyche 2010 (Russian SPE Oil & Gas Technical Conference
and Exhibition on exploration and production in 2010), 2010, October
26–28, DOI 12.2118/136272-RU, URL: https://www.onepetro.org/ conference- paper/SPE-136272-RU.
2. Valiullin R.A., Yarullin R.K., Gordeev Ya.I., Maslov S.O., Peculiarities of field geophysical tests in running horizontal wells of the Upper Chonskoe oil and gas condensate field (In Russ.), Karotazhnik, 2012, V. 220, no. 10, pp. 12–29.
3. Valiullin R.A., Yarullin A.R., Glebocheva N.K., Tikhonov A.G., Peculiarities of logging in running horizontal wells at the late stage of oil field operation (In Russ.), Karotazhnik, 2010, V. 190, no. 1, pp. 5-16.
4. Murdygin R.V., Ganichev D.I., Mikhaylov A.G. et al., The experience of
the geophysical studies on determination of the profile and composition
of RN-Purneftegaz LLC horizontal wells stream (In Russ.), Neftyanoe
khozyaystvo = Oil Industry, 2010, no. 3, pp. 64–69.
5. Valiullin R.A., Yarullin R.K., Sharafutdinov R.F., Sadretdinov A.A., Presentday procedures of geophysical studies applied at the Russian fields
(In Russ.), Neft'. Gaz. Novatsii, 2014, no. 2, pp. 21–25.
6. Valiullin R.A., Yarullin R.K., Peculiarities of geophysical research in running horizontal wells (In Russ.), Vestnik Akademii nauk Respubliki Bashkortostan, 2014, V. 19, no. 1, pp. 21–28.
7. Yarullin R., Valiullin R., Sharafutdinov R., Mnogodatchikovye tekhnologii
issledovaniya gorizontal'nykh skvazhin. Tekushchee sostoyanie i opyt
primeneniya na mestorozhdeniyakh Rossii (Multi-sensor technologies for research the horizontal wells. Current status and application experience in
the Russian fields), Proceedings of Rossiyskaya tekhnicheskaya neftegazovaya konferentsiya i vystavka SPE po razvedke i dobyche (Russian SPE Oil & Gas Technical Conference and Exhibition on exploration and production in 2010), October, 2014, URL: http://www.russianoilgas.ru/ru/Sessions/5919/ 


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