公开(公告)号：US11761680B2

公开(公告)日：2023-09-19

申请号：US17469267

申请日：2021-09-08

Applicant: PETROLEO BRASILEIRO S.A.—PETROBRAS

Inventor： Mario Germino Ferreira Da Silva ,  Francisca Ferreira Do Rosario ,  Bruno Barbosa Castro

IPC: F24H9/20

CPC classification number: F24H9/2014 ,  F24H2250/00

Abstract: 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.

公开(公告)号：US12280860B2

公开(公告)日：2025-04-22

申请号：US17555749

申请日：2021-12-20

Applicant: PETROLEO BRASILEIRO S.A.—PETROBRAS

Inventor： Mario Germino Ferreira Da Silva ,  Antonio Jose Perez Rodrigues De Britto ,  Francisca Ferreira Do Rosario ,  Bruno Barbosa Castro ,  Rosane Alves Fontes

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

Abstract: 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：US20240218235A1

公开(公告)日：2024-07-04

申请号：US18397499

申请日：2023-12-27

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Mario Germino Ferreira Da Silva ,  Valtair Marco Cristante ,  Femando Antonio Moreira Da Silva

IPC: C09K8/528 ,  E21B37/06

CPC classification number: C09K8/528 ,  E21B37/06

Abstract: The present invention proposes the use of microcapsules containing acids in its interior to adjust the pH of the scale inhibitor in oil reservoirs. The microcapsules are comprised of an inner moiety with organic or inorganic acid and an outer moiety comprised of an oil-soluble polymeric material at the reservoir temperature. The microcapsules open due to the effect of the reservoir temperature, releasing the acid into the corrosion inhibitor, hence changing its pH. The present invention further proposes a method of treatment using scale inhibitors using microcapsules containing acids in its interior to adjust the pH of the scale inhibitor in oil reservoirs, wherein the method comprises the steps of (a) preparing the scale inhibitor product; (b) pumping the inhibitor solution prepared into the standpipe manifold; (c) adding the acidic microcapsules to the scale inhibitor; and (d) injecting the inhibitor solution mixture containing the acidic microcapsules into the production well column.

公开(公告)号：US20240151124A1

公开(公告)日：2024-05-09

申请号：US18504935

申请日：2023-11-08

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： FERNANDO ANTONIO MOREIRA DA SILVA ,  Mario Germino Ferreira Da Silva

IPC: E21B43/16 ,  C09K8/584 ,  E21B43/017

CPC classification number: E21B43/166 ,  C09K8/584 ,  E21B43/017

Abstract: The present invention relates to a method for storing chemical products or their solutions in reservoir rock. In said method, the cargo boat containing the chemical product to be stored in the reservoir is connected to the production platform through an appropriate connection and connecting to the well header. The product is pumped through the chemical product capture line using a triplex chemical injection pump aligned to the head of the production or injection well. The product is pumped through the surface lines, riser and subsea line and, passing through the WCT, it is injected into the reservoir through the production or injection string.