公开(公告)号：US12066140B2

公开(公告)日：2024-08-20

申请号：US17263204

申请日：2019-07-30

申请人： PETROLEO BRASILEIRO S.A.—PETROBRAS ,  SERVICO NACIONAL DE APRENDIZAGEM INDUSTRIAL—DEPARTAMENTO REGIONAL DE SANTA CATARINA-SENAI/SC

发明人： Ney Robinson Salvi dos Reis ,  Igor Mendes Ursine Krettli ,  Hugo Francisco Lisboa Santos ,  Eduardo Gerhardt ,  Cristiane Mioto Becker ,  Antonio Droescher Sandri ,  Andre Viegas Wentz

IPC分类号： F16L55/28 ,  B61B13/10 ,  F16L101/30

CPC分类号： F16L55/28 ,  B61B13/10 ,  F16L2101/30

摘要： The present invention provides a casing system for integration of modular internal intervention equipment in tubular lines, wherein the equipment comprises a plurality of modules (2), the casing system comprising a sleeve (1) encasing, in an integral manner, at least one module (2) of the plurality of modules (2) and at least one portion of at least one component upstream (3, 2) or downstream (2, 2a) of said at least one module (2). The integration casing system of the present invention guarantees the mechanical integration of all the modular internal intervention equipment, rendering viable the operation thereof inside tubular lines in a safer, more efficient and more advantageous manner.

公开(公告)号：US11702889B2

公开(公告)日：2023-07-18

申请号：US17698724

申请日：2022-03-18

申请人： PETROLEO BRASILEIRO S.A.—PETROBRAS

发明人： Joseir Gandra Percy ,  Roni Abensur Gandelman ,  Guilherme Ribeiro Magalhaes ,  Emilio Cesar Cavalcante Melo Da Silva ,  Guilherme Siqueira Vanni ,  Augusto Borella Hougaz ,  Joao Carlos Ribeiro Placido ,  Hugo Francisco Lisboa Santos

IPC分类号： E21B7/128 ,  E21B21/08 ,  E21B21/10

CPC分类号： E21B7/128 ,  E21B21/08 ,  E21B21/10

摘要： The present invention refers to a method of drilling a marine wellbore with fluid reverse circulation without using drilling riser tubulars. In reverse circulation drilling, the fluid return with gravels occurs inside the drill string (17) and the injection of clean fluid is done through the annular of the well, so that, having a rotating head over the BOP (19), or inside it, the use of riser tubulars as a flow line for the fluid return with gravels is disposed, using instead the drill string (17).
For the kill and choke lines, as well as for fluid injection, rigid or flexible lines can be used, eliminating the need to use drilling risers, thus releasing large load capacity and space on the probe. The method of this invention also eliminates the need for large volumes of fluid to fill entire riser tubulars. The entire operation can be done without the need for subsea pumps or concentric columns. Additionally, the invention makes the operation of lowering the drilling riser tubulars unnecessary, which lasts for days and has a high cost. Finally, for dual activity probes, the arrangement allows the use of the two towers even after connecting the BOP (19), something that is not possible with the use of drilling riser tubulars. Therefore, operations such as mounting and lowering the casing in the water depth can be carried out in parallel with the drilling of the phase, allowing a significant additional gain of time.