Double-action ESP pumping system for dump flooding

Authors: A.R. Rakhmanov, R.N. Akhmadiev (Oil and Gas Production Department Almetyevneft, RF, Almetyevsk), K.V. Valovsky, G.U. Basos (TatNIPIneft, RF, Bugulma)

Key words: water-producing wells, oil production costs, down-hole gravity separation, double-action pumping system, ESP pumping system, intake formation, dump flooding to maintain reservoir pressure.

This paper discusses some aspects of improving water-producing wells operation through the use of double-action ESP pumping systems for dump flooding to maintain reservoir pressure. These pumping systems provide for down-hole gravity separation of crude oil and associated water. Then, either low-water-cut oil is produced to the surface while most of the separated water is injected to the intake formation without its lifting to the surface, or oil and water are lifted to the surface separately. In addition, ESP systems ensure low-cost control of oil-water mixture/separated water ratio, as well as the injected water quality control.

References

1. Patent no. 2394153 S1, RF, MPK E21B 43/00, Sposob ekspluatatsii vysokoobvodnennoy neftyanoy skvazhiny (Method of operation of highly watered oil well), authors: Basos G.Yu., Valovskiy V.M., Valovskiy K.V., Garifov K.M.

2. Patent no. 2395672 S1, RF, MPK E21B 43/14, Ustanovka dlya ekspluatatsii vysokoobvodnennykh neftyanykh skvazhin (Device for exploitation of highly watered oil wells) authors: Basos G.Yu., Valovskiy V.M., Valovskiy K.V., Garifov K.M.

3. Valovskiy K.V., Basos G.Yu., Valovskiy V.M. et al., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 7, pp. 62-65.

4. STO TN 028-2008, Zakachka tekhnologicheskoy zhidkosti dlya podderzhaniya plastovogo davleniya na mestorozhdeniyakh OAO “Tatneft'” (Injection of process fluid to maintain formation pressure on the fields of Tatneft OAO), Bugulma: Publ. of TatNIPIneft', 2008, XXX p.

5. RD 153 39.1 241 02, Rukovodstvo po ekspluatatsii skvazhin ustanovkami elektropogruzhnykh tsentrobezhnykh nasosov v OAO “Tatneft'” (Manual of well operation with electric submersible pump units in Tatneft OAO), Bugulma: Publ. of TatNIPIneft', 2001, XXX p.

6. Andreev I.I., Fadeev V.G., Fattakhov R.B., Fedotov G.A., Mezhskvazhinnaya i vnutriskvazhinnaya perekachka vody v sisteme podderzhaniya plastovogo davleniya (Crosshole and downhole pumping of water to maintain reservoir pressure), Moscow: Publ. of OAO «VNIIOENG», 2006, 232 p.

7. RD 153-39.0-596-08, Reglament po kontrolyu tekhnicheskogo sostoyaniya ekspluatatsionnykh kolonn (Rules to control the technical condition of production strings), Bugul'ma, 2008.

Key words: water-producing wells, oil production costs, down-hole gravity separation, double-action pumping system, ESP pumping system, intake formation, dump flooding to maintain reservoir pressure.

This paper discusses some aspects of improving water-producing wells operation through the use of double-action ESP pumping systems for dump flooding to maintain reservoir pressure. These pumping systems provide for down-hole gravity separation of crude oil and associated water. Then, either low-water-cut oil is produced to the surface while most of the separated water is injected to the intake formation without its lifting to the surface, or oil and water are lifted to the surface separately. In addition, ESP systems ensure low-cost control of oil-water mixture/separated water ratio, as well as the injected water quality control.

References

1. Patent no. 2394153 S1, RF, MPK E21B 43/00, Sposob ekspluatatsii vysokoobvodnennoy neftyanoy skvazhiny (Method of operation of highly watered oil well), authors: Basos G.Yu., Valovskiy V.M., Valovskiy K.V., Garifov K.M.

2. Patent no. 2395672 S1, RF, MPK E21B 43/14, Ustanovka dlya ekspluatatsii vysokoobvodnennykh neftyanykh skvazhin (Device for exploitation of highly watered oil wells) authors: Basos G.Yu., Valovskiy V.M., Valovskiy K.V., Garifov K.M.

3. Valovskiy K.V., Basos G.Yu., Valovskiy V.M. et al., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 7, pp. 62-65.

4. STO TN 028-2008, Zakachka tekhnologicheskoy zhidkosti dlya podderzhaniya plastovogo davleniya na mestorozhdeniyakh OAO “Tatneft'” (Injection of process fluid to maintain formation pressure on the fields of Tatneft OAO), Bugulma: Publ. of TatNIPIneft', 2008, XXX p.

5. RD 153 39.1 241 02, Rukovodstvo po ekspluatatsii skvazhin ustanovkami elektropogruzhnykh tsentrobezhnykh nasosov v OAO “Tatneft'” (Manual of well operation with electric submersible pump units in Tatneft OAO), Bugulma: Publ. of TatNIPIneft', 2001, XXX p.

6. Andreev I.I., Fadeev V.G., Fattakhov R.B., Fedotov G.A., Mezhskvazhinnaya i vnutriskvazhinnaya perekachka vody v sisteme podderzhaniya plastovogo davleniya (Crosshole and downhole pumping of water to maintain reservoir pressure), Moscow: Publ. of OAO «VNIIOENG», 2006, 232 p.

7. RD 153-39.0-596-08, Reglament po kontrolyu tekhnicheskogo sostoyaniya ekspluatatsionnykh kolonn (Rules to control the technical condition of production strings), Bugul'ma, 2008.


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