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Results of researches of technological liquids based on organomineral colloid system

UDK: 622.185.76+622.257.122
DOI: 10.24887/0028-2448-2020-4-30-33
Key words: research, organomineral colloid system, formulation, process liquid, bench tests, blocking properties, core material
Authors: R.A. Gasumov (SevKavNIPIgaz JSC, RF, Stavropol), Yu.S. Minchenko (SevKavNIPIgaz JSC, RF, Stavropol)

During the construction of wells, various complications are observed. Despite the experience of drilling in various mining and geological conditions, the costs of eliminating complications during well drilling reach up to 7–10 % of the drilling process itself. This is due to the complication of drilling conditions, an increase in the number of deep, deviated, horizontal and multilateral wells. More than 50 % of the emergency time is spent on eliminating the complications associated with rock instability. These circumstances necessitate an increase in the quality requirements of process fluids, including used in well repair. Caustobiolites – natural organogenic materials (sapropels, peat, brown coals, etc.) are promising for the preparation of process liquids. Such drilling fluids are environmentally friendly, easily cleaned of sludge, after use they can be further applied for the restoration of disturbed lands. To assess the prospects of using organomineral colloid as process liquid for well construction and repair, laboratory studies were carried out to study the basic properties of OMK-1 reagent.

The article presents physicochemical, rheological indicators of an organomineral colloid. Based on the results of studies of the basic properties of OMK-1 reagent dispersions, formulations of mineralized liquids with high density values for high pressure conditions and lightweight liquids for high pressure conditions were selected. The results of bench tests of the blocking action on core material of various types of drilling fluids based on organomineral colloid are reflected. Summarizing the results of the research, we can conclude that the new OMK-1 reagent is recommended for producing highly efficient process fluids for drilling and workover. Based on an organomineral colloid, fresh, inhibited, mineralized drilling fluids, direct and inverse emulsions can be developed. Environmentally friendly process fluids have regulatory structural and rheological properties, help maintain wellbore stability, are characterized by a fairly low water loss, and have a reduced cost.

References

1. Kosarevich I.V., Bityukov N.N., Shafapenko O.S., Ingibirovannye rastvory na osnove sapropeley (Inhibited solutions based on sapropels), Collected papers “Puti povysheniya skorostey bureniya geologo-razvedochnykh skvazhin v oslozhnennykh usloviyakh” (Ways to increase the drilling speeds of exploration wells in complicated conditions), Minsk: BelNIGRI, 1983, pp. 57–65.

2. Kustyshev A.V., Leont'ev D.S., Investigation of the peat-aLkaLine fluid properties for weLLs drilling in argillaceous rocks (In Russ.), TERRITORIYa "NEFTEGAZ", 2016, no. 3, pp. 56–58.

3. Gasumov R.A., Minchenko Yu.S., Tekhnologicheskie zhidkosti na biopolimernoy osnove dlya povysheniya effektivnosti remonta skvazhin (Biopolymer-based process fluids to enhance well repair), Collected papers “Bulatovskie chteniya”, Proceedings of III International Scientific and Practical Conference, Part 2, Krasnodar, 2019, pp. 64–67.

4. Egorova E.V., Minchenko Yu.S., Simonyants S.L., Justification of the types and properties of drilling fluids for the construction of high-yield wells in difficult mining and geological conditions (In Russ.), Inzhener-neftyanik, 2019, no. 1, pp. 22–26. 

5. Gasumov R.A., Gasumov E.R., On the effectiveness of the application of fillers of organic origin to process fluids (In Russ.), Estestvennye i tekhnicheskie nauki, 2016, no. 6 (96), pp. 48–59.

6. Gasumov R.A., Minchenko Yu.S., Process fluids preventing reservoir fluids migration in the annular space during well construction (In Russ.), Stroitel'stvo neftyanykh i gazovykh skvazhin na sushe i na more, 2017, no. 6, pp. 21–24.

7. Gasumov R.A., Restoration and improvement of gas and gas-condensate wells flow-rate by physical-chemical methods (In Russ.), Neftepromyslovoe delo, 2018, no. 5, pp. 54–57.

8. Gasumov R.A., Sukovitsyn V.A., Gavrilov A.A. et al., Reagent compositions to reclaim and improve gas well productivity in challenging rock and geological conditions (In Russ.), Neft'. Gaz. Novatsii, 2017, no. 8, pp. 52–57.

9. Mosienko V.G., Gasumov R.A., Nersesov S.V., Universal'naya ustanovka dlya ispytaniya gazopronitsaemosti kernov (Universal core gas permeability test rig), Collected papers “Stroitel'stvo gazovykh i gazokondensatnykh skvazhin” (Construction of gas and gas condensate wells), Moscow: Publ of  VNIIgaz, SevKavNIPIgaz, 1997, pp. 54–55.

During the construction of wells, various complications are observed. Despite the experience of drilling in various mining and geological conditions, the costs of eliminating complications during well drilling reach up to 7–10 % of the drilling process itself. This is due to the complication of drilling conditions, an increase in the number of deep, deviated, horizontal and multilateral wells. More than 50 % of the emergency time is spent on eliminating the complications associated with rock instability. These circumstances necessitate an increase in the quality requirements of process fluids, including used in well repair. Caustobiolites – natural organogenic materials (sapropels, peat, brown coals, etc.) are promising for the preparation of process liquids. Such drilling fluids are environmentally friendly, easily cleaned of sludge, after use they can be further applied for the restoration of disturbed lands. To assess the prospects of using organomineral colloid as process liquid for well construction and repair, laboratory studies were carried out to study the basic properties of OMK-1 reagent.

The article presents physicochemical, rheological indicators of an organomineral colloid. Based on the results of studies of the basic properties of OMK-1 reagent dispersions, formulations of mineralized liquids with high density values for high pressure conditions and lightweight liquids for high pressure conditions were selected. The results of bench tests of the blocking action on core material of various types of drilling fluids based on organomineral colloid are reflected. Summarizing the results of the research, we can conclude that the new OMK-1 reagent is recommended for producing highly efficient process fluids for drilling and workover. Based on an organomineral colloid, fresh, inhibited, mineralized drilling fluids, direct and inverse emulsions can be developed. Environmentally friendly process fluids have regulatory structural and rheological properties, help maintain wellbore stability, are characterized by a fairly low water loss, and have a reduced cost.

References

1. Kosarevich I.V., Bityukov N.N., Shafapenko O.S., Ingibirovannye rastvory na osnove sapropeley (Inhibited solutions based on sapropels), Collected papers “Puti povysheniya skorostey bureniya geologo-razvedochnykh skvazhin v oslozhnennykh usloviyakh” (Ways to increase the drilling speeds of exploration wells in complicated conditions), Minsk: BelNIGRI, 1983, pp. 57–65.

2. Kustyshev A.V., Leont'ev D.S., Investigation of the peat-aLkaLine fluid properties for weLLs drilling in argillaceous rocks (In Russ.), TERRITORIYa "NEFTEGAZ", 2016, no. 3, pp. 56–58.

3. Gasumov R.A., Minchenko Yu.S., Tekhnologicheskie zhidkosti na biopolimernoy osnove dlya povysheniya effektivnosti remonta skvazhin (Biopolymer-based process fluids to enhance well repair), Collected papers “Bulatovskie chteniya”, Proceedings of III International Scientific and Practical Conference, Part 2, Krasnodar, 2019, pp. 64–67.

4. Egorova E.V., Minchenko Yu.S., Simonyants S.L., Justification of the types and properties of drilling fluids for the construction of high-yield wells in difficult mining and geological conditions (In Russ.), Inzhener-neftyanik, 2019, no. 1, pp. 22–26. 

5. Gasumov R.A., Gasumov E.R., On the effectiveness of the application of fillers of organic origin to process fluids (In Russ.), Estestvennye i tekhnicheskie nauki, 2016, no. 6 (96), pp. 48–59.

6. Gasumov R.A., Minchenko Yu.S., Process fluids preventing reservoir fluids migration in the annular space during well construction (In Russ.), Stroitel'stvo neftyanykh i gazovykh skvazhin na sushe i na more, 2017, no. 6, pp. 21–24.

7. Gasumov R.A., Restoration and improvement of gas and gas-condensate wells flow-rate by physical-chemical methods (In Russ.), Neftepromyslovoe delo, 2018, no. 5, pp. 54–57.

8. Gasumov R.A., Sukovitsyn V.A., Gavrilov A.A. et al., Reagent compositions to reclaim and improve gas well productivity in challenging rock and geological conditions (In Russ.), Neft'. Gaz. Novatsii, 2017, no. 8, pp. 52–57.

9. Mosienko V.G., Gasumov R.A., Nersesov S.V., Universal'naya ustanovka dlya ispytaniya gazopronitsaemosti kernov (Universal core gas permeability test rig), Collected papers “Stroitel'stvo gazovykh i gazokondensatnykh skvazhin” (Construction of gas and gas condensate wells), Moscow: Publ of  VNIIgaz, SevKavNIPIgaz, 1997, pp. 54–55.


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