Effect of Cleaning the Annular Space on the Adhesion of the Cement Sheath to the Rock
Drilling boreholes in gas zones and in zones with the possibility of migration or gas exhalation requires a high index of well tightness. An important parameter determining the effectiveness of sealing the annular space is the adhesion of the cement sheath to the rock formation. Low values of adhesi...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-08-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/16/5187 |
| _version_ | 1797523985025466368 |
|---|---|
| author | Marcin Kremieniewski Sławomir Błaż Stanisław Stryczek Rafał Wiśniowski Andrzej Gonet |
| author_facet | Marcin Kremieniewski Sławomir Błaż Stanisław Stryczek Rafał Wiśniowski Andrzej Gonet |
| author_sort | Marcin Kremieniewski |
| collection | DOAJ |
| description | Drilling boreholes in gas zones and in zones with the possibility of migration or gas exhalation requires a high index of well tightness. An important parameter determining the effectiveness of sealing the annular space is the adhesion of the cement sheath to the rock formation. Low values of adhesion of the cement sheath to the rock formation and to the casing surface result in the formation of uncontrolled gas flows. The lack of adhesion also reduces the stabilization of the pipe column. To obtain the required adhesion, the annular space should be properly cleaned. Thorough removal of filter cake from the drilling fluid increases adhesion and reduces gas migration from the annular space. Therefore, in this work, the authors focus on determining the effect of cleaning the annular space on the adhesion of the cement sheath to the rock formation. The results of the research work allow for further research on the modification of spacers and cement slurries in order to obtain the required increase in adhesion. The article presents the issues related to the preparation of the borehole for cementing by appropriate cleaning of the rock formation from the residue of the mud cake. During the implementation of the works, tests of cleaning the rock surface are performed. The obtained results are correlated with the results of adhesion on the rock–cement sheath cleaned of the wash mud cake contact. When analyzing the obtained test results, a relationship is found between the cleaning of the rock surface and the adhesion of the cement sheath to it. |
| first_indexed | 2024-03-10T08:50:54Z |
| format | Article |
| id | doaj.art-a10b1ed7ef2c44ba875345bf44997e2c |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T08:50:54Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a10b1ed7ef2c44ba875345bf44997e2c2023-11-22T07:33:18ZengMDPI AGEnergies1996-10732021-08-011416518710.3390/en14165187Effect of Cleaning the Annular Space on the Adhesion of the Cement Sheath to the RockMarcin Kremieniewski0Sławomir Błaż1Stanisław Stryczek2Rafał Wiśniowski3Andrzej Gonet4Oil and Gas Institute—National Research Institute, 31-503 Kraków, PolandOil and Gas Institute—National Research Institute, 31-503 Kraków, PolandDepartment of Drilling and Geoengineering, Faculty of Drilling, Oil and Gas, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Kraków, PolandDepartment of Drilling and Geoengineering, Faculty of Drilling, Oil and Gas, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Kraków, PolandDepartment of Drilling and Geoengineering, Faculty of Drilling, Oil and Gas, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Kraków, PolandDrilling boreholes in gas zones and in zones with the possibility of migration or gas exhalation requires a high index of well tightness. An important parameter determining the effectiveness of sealing the annular space is the adhesion of the cement sheath to the rock formation. Low values of adhesion of the cement sheath to the rock formation and to the casing surface result in the formation of uncontrolled gas flows. The lack of adhesion also reduces the stabilization of the pipe column. To obtain the required adhesion, the annular space should be properly cleaned. Thorough removal of filter cake from the drilling fluid increases adhesion and reduces gas migration from the annular space. Therefore, in this work, the authors focus on determining the effect of cleaning the annular space on the adhesion of the cement sheath to the rock formation. The results of the research work allow for further research on the modification of spacers and cement slurries in order to obtain the required increase in adhesion. The article presents the issues related to the preparation of the borehole for cementing by appropriate cleaning of the rock formation from the residue of the mud cake. During the implementation of the works, tests of cleaning the rock surface are performed. The obtained results are correlated with the results of adhesion on the rock–cement sheath cleaned of the wash mud cake contact. When analyzing the obtained test results, a relationship is found between the cleaning of the rock surface and the adhesion of the cement sheath to it.https://www.mdpi.com/1996-1073/14/16/5187improving the sealing of the boreholerational selection of drilling fluidswell cementingcleaning the boreholeadhesioncement sheath |
| spellingShingle | Marcin Kremieniewski Sławomir Błaż Stanisław Stryczek Rafał Wiśniowski Andrzej Gonet Effect of Cleaning the Annular Space on the Adhesion of the Cement Sheath to the Rock Energies improving the sealing of the borehole rational selection of drilling fluids well cementing cleaning the borehole adhesion cement sheath |
| title | Effect of Cleaning the Annular Space on the Adhesion of the Cement Sheath to the Rock |
| title_full | Effect of Cleaning the Annular Space on the Adhesion of the Cement Sheath to the Rock |
| title_fullStr | Effect of Cleaning the Annular Space on the Adhesion of the Cement Sheath to the Rock |
| title_full_unstemmed | Effect of Cleaning the Annular Space on the Adhesion of the Cement Sheath to the Rock |
| title_short | Effect of Cleaning the Annular Space on the Adhesion of the Cement Sheath to the Rock |
| title_sort | effect of cleaning the annular space on the adhesion of the cement sheath to the rock |
| topic | improving the sealing of the borehole rational selection of drilling fluids well cementing cleaning the borehole adhesion cement sheath |
| url | https://www.mdpi.com/1996-1073/14/16/5187 |
| work_keys_str_mv | AT marcinkremieniewski effectofcleaningtheannularspaceontheadhesionofthecementsheathtotherock AT sławomirbłaz effectofcleaningtheannularspaceontheadhesionofthecementsheathtotherock AT stanisławstryczek effectofcleaningtheannularspaceontheadhesionofthecementsheathtotherock AT rafałwisniowski effectofcleaningtheannularspaceontheadhesionofthecementsheathtotherock AT andrzejgonet effectofcleaningtheannularspaceontheadhesionofthecementsheathtotherock |