Development and implementation of equipment for dispersing drilling and process fluids

UDK: 622.244.4.062
DOI: 10.24887/0028-2448-2021-10-42-45
Key words: cavitation, dispersion, homogenization, mechanical stirrers, viscosity, static shear stress
Authors: I.A. Pakhlyan (Kuban State Technological University, RF, Armavir), M.V. Omelyanyuk (Kuban State Technological University, RF, Armavir)

The paper analyzes and reviews the equipment used for dispersing and homogenizing the solid phase of drilling flushing and process fluids. It is effective to use in these processes the phenomenon of cavitation, as an intensifying factor for bringing the prepared solution to the condition, due to the destructive effects occurring in multiphase flows due to numerous microscopic water shocks - pressure surges, accompanied by the formation of shock waves and microjets of high intensity in the liquid. To implement these effects in the prepared solution, cavitation dispersers, NKD (mixers – diffuser) and NKD2 (slot) were developed. Analytical and numerical methods revealed the main regularities of the generation of cavitation in the flowing parts of the dispersants. Numerical simulation of the flow of multiphase flows by the finite element method was carried out on the Star-CCM + platform (Siemens PLM Software). The beginning of the initiation of cavitation occurs at an inlet overpressure of 0.05-0.08 MPa; at a value of 0.2-0.3 MPa, developed cavitation occurs, and the vapor-gas cavities fill the entire space of the diffuser or sheared nozzle. Full-scale samples of NKD and NKD2 were introduced into the activities of a service company that provides comprehensive services for the preparation of drilling fluids and process fluids for the construction and overhaul of wells at gas and oil fields in the Krasnodar Territory. Tests have shown that cavitation dispersants increase the speed of preparation and conditioning of clay suspensions by several times in comparison with standard mixing systems with stirrers. Time spent on mud preparation reduced to 12 h. The article also presents other results of experimental industrial tests of equipment. The obtained economic effects are confirmed by the acts of implementation.

References

1. Drilling fluids processing handbook, Oxford, UK: Elsevier Inc., 2005, 666 p.

2. Bridges S., Robinson L., A practical handbook for drilling fluids processing, Gulf Professional Publishing, 2020, 622 p.

3. Newman K., Lomond P., McCoch K., Advances in mixing technology improve drilling fluid preparation and properties, AADE 2009-NTCE-08-02, URL: https://www.aade.org/application/files/8015/7303/4619/2009NTCE-08-02_Tech_Paper.pdf.

4. Lambin A.I., Sosnovskikh M.P., Bronnikova T.P., Comparative assessment of clay yield when preparing drilling muds (In Russ.), Izvestiya Sibirskogo otdeleniya. Sektsiya nauk o Zemle RAEN, 2012, V. 40, no. 1, pp. 110–114.

5. Bulatov A.I., Makarenko P.P., Proselkov Yu.M., Burovye promyvochnye i tamponazhnye rastvory (Drill mud and cement slurry), Moscow: Nedra Publ., 1999, 424 p.

6. Bashta T.M., Rudnev S.S., Nekrasov B.B. et al., Gidravlika, gidromashiny i gidroprivody (Hydraulics, hydraulic machines and hydraulic drives), Moscow: Mashinostroenie Publ., 1982, 423 p.

7. Omel'yanyuk M.V., Pakhlyan I.A., Gidrodinamicheskie i kavitatsionnye struynye tekhnologii v neftegazovom dele (Hydrodynamic and cavitation jet technology in oil and gas business), Krasnodar: Publ. of CSTU, 2017, 215 p.

8. Omel'yanyuk M.V., Pakhlyan I.A., Technological application of cavitating jet streams in the oil and gas industry (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2019, no. 11, pp. 130–133, DOI: 10.24887/0028-2448-2019-11-130-133

9. Vryzas Z., Kelessidis V.C., Nano-based drilling fluids: A review, Energies, 2017, V. 10, no. 4, pp. 540–574, DOI:10.3390/en10040540

10. Solutions for your toughest mixing applications in chemicals. Preparation of  drilling fluids,  Silverson report no. 33CA4, p. 4.

The paper analyzes and reviews the equipment used for dispersing and homogenizing the solid phase of drilling flushing and process fluids. It is effective to use in these processes the phenomenon of cavitation, as an intensifying factor for bringing the prepared solution to the condition, due to the destructive effects occurring in multiphase flows due to numerous microscopic water shocks - pressure surges, accompanied by the formation of shock waves and microjets of high intensity in the liquid. To implement these effects in the prepared solution, cavitation dispersers, NKD (mixers – diffuser) and NKD2 (slot) were developed. Analytical and numerical methods revealed the main regularities of the generation of cavitation in the flowing parts of the dispersants. Numerical simulation of the flow of multiphase flows by the finite element method was carried out on the Star-CCM + platform (Siemens PLM Software). The beginning of the initiation of cavitation occurs at an inlet overpressure of 0.05-0.08 MPa; at a value of 0.2-0.3 MPa, developed cavitation occurs, and the vapor-gas cavities fill the entire space of the diffuser or sheared nozzle. Full-scale samples of NKD and NKD2 were introduced into the activities of a service company that provides comprehensive services for the preparation of drilling fluids and process fluids for the construction and overhaul of wells at gas and oil fields in the Krasnodar Territory. Tests have shown that cavitation dispersants increase the speed of preparation and conditioning of clay suspensions by several times in comparison with standard mixing systems with stirrers. Time spent on mud preparation reduced to 12 h. The article also presents other results of experimental industrial tests of equipment. The obtained economic effects are confirmed by the acts of implementation.

References

1. Drilling fluids processing handbook, Oxford, UK: Elsevier Inc., 2005, 666 p.

2. Bridges S., Robinson L., A practical handbook for drilling fluids processing, Gulf Professional Publishing, 2020, 622 p.

3. Newman K., Lomond P., McCoch K., Advances in mixing technology improve drilling fluid preparation and properties, AADE 2009-NTCE-08-02, URL: https://www.aade.org/application/files/8015/7303/4619/2009NTCE-08-02_Tech_Paper.pdf.

4. Lambin A.I., Sosnovskikh M.P., Bronnikova T.P., Comparative assessment of clay yield when preparing drilling muds (In Russ.), Izvestiya Sibirskogo otdeleniya. Sektsiya nauk o Zemle RAEN, 2012, V. 40, no. 1, pp. 110–114.

5. Bulatov A.I., Makarenko P.P., Proselkov Yu.M., Burovye promyvochnye i tamponazhnye rastvory (Drill mud and cement slurry), Moscow: Nedra Publ., 1999, 424 p.

6. Bashta T.M., Rudnev S.S., Nekrasov B.B. et al., Gidravlika, gidromashiny i gidroprivody (Hydraulics, hydraulic machines and hydraulic drives), Moscow: Mashinostroenie Publ., 1982, 423 p.

7. Omel'yanyuk M.V., Pakhlyan I.A., Gidrodinamicheskie i kavitatsionnye struynye tekhnologii v neftegazovom dele (Hydrodynamic and cavitation jet technology in oil and gas business), Krasnodar: Publ. of CSTU, 2017, 215 p.

8. Omel'yanyuk M.V., Pakhlyan I.A., Technological application of cavitating jet streams in the oil and gas industry (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2019, no. 11, pp. 130–133, DOI: 10.24887/0028-2448-2019-11-130-133

9. Vryzas Z., Kelessidis V.C., Nano-based drilling fluids: A review, Energies, 2017, V. 10, no. 4, pp. 540–574, DOI:10.3390/en10040540

10. Solutions for your toughest mixing applications in chemicals. Preparation of  drilling fluids,  Silverson report no. 33CA4, p. 4.



Attention!
To buy the complete text of article (a format - PDF) or to read the material which is in open access only the authorized visitors of the website can. .

Mobile applications

Read our magazine on mobile devices

Загрузить в Google play

Press Releases

24.11.2021
23.11.2021
02.11.2021
Конкурс на соискание молодежной премии имени академика И.М. Губкина