Patent EA-004357-B1 (EA)
Title: Combined liner and matrix system
Inventor: KILAAS LARS
IPC: B01D39/16
Filed: 2001-07-12
Abstract: 1. Prefabricated combined liner and matrix system (4) for monitoring and control of events/processes in a well and/or reservoir comprising: an outer perforated pipe means (6) having sufficient strength to work as a liner, an inner screen (7), and a matrix (8) arranged between the outer perforated pipe means (6) and the inner screen (7), characterized in that the inner screen (7) and matrix (8) are provided with openings therethrough (10), where the open areas provided by the openings (10) are larger than the open areas provided by the perforations in the outer perforated pipe means (6). 2. System according to claim 1, characterized in that the outer perforated pipe means (6) is formed as a flexible material net or as a single perforated pipe or as any combination thereof. 3. System according to claim 1, characterized in that the inner screen (7) is formed as a flexible material net or as a single perforated pipe. 4. System according to claim 1, characterized in that the outer perforated pipe means (6), the inner screen (7), and the matrix material (8) comprises a metal, inorganic or organic polymer or composite material or any combinations thereof. 5. System according to claim 1, characterized in a porous matrix (8), where the porosity, pore size and pore size distribution are controllable. 6. System according to claim 5, characterized in that the matrix (8) porosity/permeability is automatically affected by the environment, e.g. by temperature, water or oil flow, time or by manual trigging with specific reagents. 7. System according to claim 1, characterized in that the matrix (8) comprises at least one type of polymer or polymer particles or a combination thereof. 8. System according to claim 1, characterized in that the matrix (8) is either a bulk matrix having the same shape as the geometrical volume of a polymer filling the matrix, a package of at least one type of polymer particle or a combination of polymer particles in a bulk polymer. 9. System according to claim 7 or 8, characterized in that the polymer particles have a diameter from 0.2 mum to 5000mum. 10. System according to claim 9, characterized in that the diameter preferably is from 0.5mum to 3000mum, and most preferably from 0.9mum to 1000mum. 11. System according to claim 1, characterized in that the matrix (8) comprise a porogen medium or compound. 12. System according to claim 1, characterized in a porous matrix (8) or an initially compact matrix (8), the compact matrix becoming porous and permeable as a result of external influence, the matrix comprising a polymer or chemical compound reacting with the ambient conditions (e.g. temperature, pH, water or triggers) and thereby releasing substances chemically bonded or bonded by adsorption to the matrix into the fluid flow. 13. System according to claims 5 or 12, characterized in that the pore volume is from about 50 to 70% per free pore volume. 14. System according to claim 1, characterized in that the matrix (8) comprises components being detectable after release from the matrix. 15. System according to claim 1, characterized in that the matrix (8) comprises a chemically intelligent tracer(s) for monitoring specific events in the well or reservoir. 16. System according to claim 15, characterized in that the tracers are adsorbed in or chemically bonded to the matrix (8). 17. System according to claim 1, characterized in that the matrix/liner system (4) comprises a flexible perforated material (9) of any metal or inorganic or organic polymer or any combinations thereof, between outer perforated pipe means (6) and inner screen (7) and increasing physical strength and stability of the system. 18. System according to claim 1, characterized in that the combined liner/matrix system (4) is prefabricated at any suitable length and connected to each other or to other pipeline elements forming a pipeline easily installable in horizontal, vertical or helical wells. 19. System according to claim 1, characterized in that the combined liner/matrix system (4) comprises a sectional plugging system (5) for sealing off various sections of the liner/matrix system from each ether. 20. System according to claim 1, characterized in that the liner/matrix system (4) is divided in various sections along the well, the matrix (8) having different properties in the various sections. 21. Method for control and monitoring of processes in a well or reservoir using the combined liner/matrix system according to claim 1, characterized in - providing the matrix with certain properties based on reservoir data prior to installation in the reservoir, - installing the combined liner/matrix system in the reservoir, and - controlling or monitoring the well by interaction with/by means of the matrix. 22. Use of the combined liner/matrix system according to one of claims 1-20 in any process equipment, like e.g. reactors, separators and storage tanks. 23. Use of the liner/matrix system according to one of claims 1-20 in a gas/oil/water producing or injection well for well completion, control and monitoring.