Remedial cementing and zonal isolation

Excess water control (including squeeze cementing and zonal isolation) is used to overcome problems during well operation with high water-cut on mature fields at the last stage of development. The efficiency of such remedial operations depends on a wide range of research and engineering solutions
 

Ufa Scientific and Technical Center Our Company offers an integrated approach which implies full support of all operations on turn-key basis including the following stages:
 
  • Choosing candidate wells
Analysis of an extended list of wells from identified problem areas / zones. Ranking wells based on assumed efficiency of remedial treatment. Recommendations for additional well surveys to locate and characterize sources of excess water production
 
  • Selection of optimum treatment agents
Laboratory research and testing to shortlist most effective cement compositions and formulate new blends. Formulation optimization of gelling agents, resins, cements and chemicals for temporary clogging of producing reservoirs
 
  • Treatment design
Choosing best technique for remedial treatment and placement method to deliver the remedial composition (cement) to target zones for isolation. Preliminary selection is based on express methods, the selected technique is then adapted to the actual conditions of each treatment zone based on geophysical data and numerical simulations
 
  • Engineering and support
Engineering control over the process of remedial treatment. Real-time adjustment of treatment program if required. Successful experience in using all main classes of curing and gelling compositions, technical means to block water invasion
 
  • Analytics and recommendations
Detailed factor analysis of remedial treatment results. Identification of operational risks in the process of remedial treatment. Recommendations on optimization of engineering processes aimed at improving the quality of remedial treatment
 

The ultimate goal is to secure maximum effectiveness and efficiency of remedial treatment operations