公开(公告)号：US20220341291A1

公开(公告)日：2022-10-27

申请号：US17642585

申请日：2020-09-09

申请人： PETROLEO BRASILEIRO S.A. - PETROBRAS

发明人： Mario Germino FERREIRA DA SILVA ,  Francisca FERREIRA DO ROSARIO ,  Rosane ALVES FONTES ,  Katia Regina SILVA ALVES DA ROSA ,  Valtair Marcos CRISTANTE ,  Tiago CAVALCANTE FREITAS

IPC分类号： E21B37/06 ,  B08B3/08 ,  B08B3/10 ,  B08B9/032 ,  C09K8/528

摘要： During meeting for planning operations for scale removal and scale inhibitor squeeze treatment in wells, the possibility of the manifold being partially incrusted with scale raised considering the more critical mixture of water produced. The proposed solution is a method of treatment for removing scale from a manifold. Said method uses the geothermal heating of the exploration reservoir to heat a chemical removal solution (50). Heating is required to ensure the temperature is in a range that is also suitable for conducting the removal reaction, since the distance that the solution travels to the manifold (20) e the low temperature of the underwater environment make the reaction occur inefficiently, as in the case of pre-salt.

公开(公告)号：US20220194535A1

公开(公告)日：2022-06-23

申请号：US17555749

申请日：2021-12-20

申请人： PETROLEO BRASILEIRO S.A. - PETROBRAS

发明人： Mario Germino FERREIRA DA SILVA ,  Antonio Jose Perez RODRIGUES DE BRITTO ,  Francisca FERREIRA DO ROSARIO ,  Bruno Barbosa CASTRO

IPC分类号： B63G8/00 ,  F16L55/24 ,  B08B9/032

摘要： In order to meet the objectives described above, the present invention provides a robot for detecting breakdown of NORM (Naturally Occurring Radioactive Materials) in a production system, in order to plan operations to remove scale containing radioactive material, and for decommissioning subsea system operations. The fields of application are the area of flow assurance and reservoir management, using operations to chemically remove scale containing NORM in the production system, and to improve the safety of the decommissioning processes of production systems. The invention allows the position of the scale inside the production system to be safely detected, such as, for example, the beginning of the deposit inside a production line, the extension of the deposit, and the end of the deposit, as well as whether the deposit occurred at different points along the production line.

公开(公告)号：US20220082301A1

公开(公告)日：2022-03-17

申请号：US17469267

申请日：2021-09-08

申请人： PETROLEO BRASILEIRO S.A. - PETROBRAS

发明人： Mario Germino FERREIRA DA SILVA ,  Francisca FERREIRA DO ROSARIO

IPC分类号： F24H9/20

摘要： The object of the invention is to solve the problem of casing and string collapse of production or injection wells, which occurs due to cooling caused by injection of completion fluids into the well, by applying heat to the fluid being injected during operations, such as acid treatments, secondary recovery, scale removal, and inhibiting squeeze.
The fluid laser heating equipment was designed to perform the heating of the fluid to be injected into a production or injection well. Before being pumped into the well, the fluid passes through the heating equipment, through a metal coil-shaped tube immersed in hot water, placed inside a tank, a laser system heats the water inside the tank, the water inside the tank exchanges heat with the coil heating the same, and in turn the coil exchanges heat with the fluid passing within it. In this way, the fluid will be at an appropriate temperature for injection into the well.