Global Patent Index - EP 4328414 A1

EP 4328414 A1 20240228 - A WORKOVER SYSTEM FOR RECEIVING A TUBULAR STRING FROM A WELLBORE

Title (en)

A WORKOVER SYSTEM FOR RECEIVING A TUBULAR STRING FROM A WELLBORE

Title (de)

ÜBERARBEITUNGSSYSTEM ZUR AUFNAHME EINES ROHRSTRANGS AUS EINEM BOHRLOCH

Title (fr)

SYSTÈME DE RECONDITIONNEMENT POUR RECEVOIR UNE COLONNE TUBULAIRE À PARTIR D'UN PUITS DE FORAGE

Publication

EP 4328414 A1 20240228 (EN)

Application

EP 23178255 A 20230608

Priority

NL 2032110 A 20220609

Abstract (en)

A workover system for receiving a tubular string from a wellbore pressurized by hydrogen, the system including:- at least three BOPs (5, 6, 7) defining at least a first part (P 1) and a second part (P2) of a string passage there-between, each BOP (5, 6, 7) being configured to sealingly engage an outer surface of a tubular string (T) when the BOP (5, 6, 7) is in a sealing state and to disengage the outer surface of the tubular string (T) when the BOP is in a releasing state; and-a pressure conditioning system (11, 12, 13, 14, 21, 22) configured to fill each of the first and second part (P1, P2) of the string passage with a buffer fluid, in particular during at pressurization period.Also, there is provided a method for moving a tubular string through a wellbore.

IPC 8 full level

E21B 33/068 (2006.01)

CPC (source: EP)

E21B 33/068 (2013.01)

Citation (applicant)

Citation (search report)

  • [XI] CA 2961815 A1 20180923 - GIBBS BRIAN [CA]
  • [A] CA 2303058 A1 20010928 - DALLAS L MURRAY [US]
  • [A] US 9212532 B2 20151215 - LEUCHTENBERG CHRISTIAN [SG], et al
  • [A] NORTON V: "LARGE-DIAMETER COILED TUBING COMPLETIONS DECREASE RISK OF FORMATION DAMAGE", OIL AND GAS JOURNAL, PENNWELL, HOUSTON, TX, US, vol. 90, no. 29, 20 July 1992 (1992-07-20), pages 111 - 113, XP000292239, ISSN: 0030-1388

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

NL 2032110 B1 20231218; EP 4328414 A1 20240228

DOCDB simple family (application)

NL 2032110 A 20220609; EP 23178255 A 20230608