Expro Excellence
Distributed Fiber Optic Sensing
Expro’s Distributed Fiber Optic Sensing (DFOS) – Know where your leak is located
Customer challenges
  • Expro have a long-standing relationship with the customer, which allows us to assist in their operational requirements, proposing and offering them technologies to overcome their challenges
  • The main challenge for the customer was in providing well integrity assessment to a producing well, which showed sustained pressure and high-water production through an outer annulus
  • The well was in an area of productive farms and in the vicinity of a densely populated city, so consideration had to be taken to preserving the delicate ecological balance when conducting well surveys and intervention
  • The challenge was in detecting the pressure and fluid source and path into the outer “A” Annulus
  • The situation in the well was that sustained pressure in the “A” Annulus reached 83 psi and when bled off produced 130bbl/day of water and associated gas production. Tubing pressure was 750psi with production of 72 bbl/day of oil, 556 bbl/day of water and 45,900 scf/day of gas
  • The main requirement was to determine the source of fluid entry to the “A” Annulus and rule out communication between the deeper productive intervals and "A" Annulus
  • The customer wished to improve their operational performance and were keen to incorporate innovative solutions that maximized results, time, cost savings and minimize environmental impact
Expro Excellence
  • Expro have direct contact with technical experts and we responded quickly, giving advice and support to their operations
  • Our main differentiator was in our ability to implement innovative solutions. Expro are the only company in Argentina that offers Distributed Fiber Optic Sensing (DFOS) services for well integrity evaluation
  • We were faced with local operational issues in deploying new technology, which was overcome by training, procedures, and cohesive teamwork
  • The Expro DFOS solution achieved a full DFOS survey of the whole well including a bleed and production phase within hours and delivering integrated quicklook data within a day
  • If Expro had not provided this solution, the customer would have had to carry out the remediation by trial and error with increased uncertainty and a higher cost implication
Value to client
  • The DFOS survey results enabled the customer to locate the fluid source and the path of locate the fluid source and the path of the pressure build-up to the "A" Annulus and the exact location of the fluid entry point
  • In addition, this survey was also able to clearly identify the zones which were contributing to their well production, enabling the customer to conduct targeted stimulation in the future which would increase their production capacity
  • Our DFOS technology resulted in fewer operating hours savings in field personnel, wireline equipment and bleed off equipment costs
  • Expro DFOS answered the primary objectives of the client within hours of gathering the data and provided added value with surveillance over the productive interval
  • The client has a clearer understanding of the source and potential remediation options for the sustained casing pressure as well as rate enhancement options for the productive interval
Contact

Expro’s Distributed Fiber Optic Sensing (DFOS) – Know where your leak is located

In Brief
Expro are the only company in Argentina that offers Distributed Fiber Optic Sensing (DFOS) services for well integrity evaluation
Product Line
Distributed Fiber Optic Sensing
Region
North and Latin America
Customer challenges
  • Expro have a long-standing relationship with the customer, which allows us to assist in their operational requirements, proposing and offering them technologies to overcome their challenges
  • The main challenge for the customer was in providing well integrity assessment to a producing well, which showed sustained pressure and high-water production through an outer annulus
  • The well was in an area of productive farms and in the vicinity of a densely populated city, so consideration had to be taken to preserving the delicate ecological balance when conducting well surveys and intervention
  • The challenge was in detecting the pressure and fluid source and path into the outer “A” Annulus
  • The situation in the well was that sustained pressure in the “A” Annulus reached 83 psi and when bled off produced 130bbl/day of water and associated gas production. Tubing pressure was 750psi with production of 72 bbl/day of oil, 556 bbl/day of water and 45,900 scf/day of gas
  • The main requirement was to determine the source of fluid entry to the “A” Annulus and rule out communication between the deeper productive intervals and "A" Annulus
  • The customer wished to improve their operational performance and were keen to incorporate innovative solutions that maximized results, time, cost savings and minimize environmental impact
Expro Excellence
  • Expro have direct contact with technical experts and we responded quickly, giving advice and support to their operations
  • Our main differentiator was in our ability to implement innovative solutions. Expro are the only company in Argentina that offers Distributed Fiber Optic Sensing (DFOS) services for well integrity evaluation
  • We were faced with local operational issues in deploying new technology, which was overcome by training, procedures, and cohesive teamwork
  • The Expro DFOS solution achieved a full DFOS survey of the whole well including a bleed and production phase within hours and delivering integrated quicklook data within a day
  • If Expro had not provided this solution, the customer would have had to carry out the remediation by trial and error with increased uncertainty and a higher cost implication
Value to client
  • The DFOS survey results enabled the customer to locate the fluid source and the path of locate the fluid source and the path of the pressure build-up to the "A" Annulus and the exact location of the fluid entry point
  • In addition, this survey was also able to clearly identify the zones which were contributing to their well production, enabling the customer to conduct targeted stimulation in the future which would increase their production capacity
  • Our DFOS technology resulted in fewer operating hours savings in field personnel, wireline equipment and bleed off equipment costs
  • Expro DFOS answered the primary objectives of the client within hours of gathering the data and provided added value with surveillance over the productive interval
  • The client has a clearer understanding of the source and potential remediation options for the sustained casing pressure as well as rate enhancement options for the productive interval
Contact

For further information, please contact:

[email protected]