Petroleo Brasileiro S.a. - Petrobras

Petróbras Brasileiro S. A.—petrobras

Petroleo Brasil S.a.—petrobras

Francisca Ferreira Do Rosario

Mario Germino Ferreira Da Silva

Bruno Barbosa Castro

Tiago Cavalcante Freitas

Rosane Alves Fontes

Fernando Antonio Moreira Da Silva

Sergio Taveira De Camargo Junior

Roberto Motto Gomes

Francileide Gomes Da Costa

Katia Regina Silva Alves Da Rosa

Maylton Freitas Da Silva

Alexandre Zacarias Ignacio Pereira

Antonio Jose Perez Rodrigues De Britto

Rita De Cassia Comis Wagner

Giselle Maria Lopes Leite Da Silva

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.

Subsea robot and method for detecting norm breakdown in a production system

A system and method for inhibiting or removing scaling in wells equipped with intelligent completion (IC), including sealing failures, includes a mixture of viscous gel and solid material in different granulometries is used and spheres soluble in water and in oil. The system and method aim to maintain production of wells equipped with intelligent completion and aim to reduce costs in relation to operations commonly performed with rigs.

Method of remote divergence for wells equipped with intelligent completion

A joint application process of two treatments, scale removal and inhibitor squeeze injection, is described herein. Through the simultaneous positioning inside the reservoir, it can be applied in scale removal operations for carbonate formations, such as the pre-salt case. Accordingly, there is a way to improve the efficiency of reservoir management, through an innovation in the scaling management process.

Method for the combined application of scale remover and inhibitor

This invention contains a method focused on increasing the water saturation of the reservoir by injecting industrial water into the well via SPU, thus diluting the concentration of salts, such as halite (sodium chloride). When the oil passes through the gas lift mandrel, this dilution will allow a part of the BSW water to evaporate, however, the amount of water that will remain in the oil will be sufficient to keep the salts in solution, thus scale formation will not occur and therefore no loss of production will occur. One of the focus areas of the method of this invention are high-temperature and low-BSW production reservoir wells. The solution of this invention minimizes the frequency of well treatments, avoiding loss of production due to well stoppage. The technical advantages of the method are increased reliability for SPU, increased NPV of operations and increased safety due to the reduction of operations with participation of the stimulation vessel.

Method for preventing saline scale in low-activity, aqueous-phase reservoir wells and its use

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.

Equipment for laser heating of fluids for injection in wells

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Rio de Janeiro, Brazil

Francisca Ferreira Do Rosario