EP 3249151 A1 20171129 - METHOD FOR EVALUATING A WELLBORE PARAMETER IN A DRILLING OPERATION AND RELATED ASSEMBLY
Title (en)
METHOD FOR EVALUATING A WELLBORE PARAMETER IN A DRILLING OPERATION AND RELATED ASSEMBLY
Title (de)
VERFAHREN ZUM AUSWERTEN EINES BOHRLOCHPARAMETERS IN EINEM BOHRVORGANG UND ZUGEHÖRIGE ANORDNUNG
Title (fr)
PROCÉDÉ POUR ÉVALUER UN PARAMÈTRE DE FORAGE LORS D'UNE OPÉRATION DE FORAGE ET ENSEMBLE CORRESPONDANT
Publication
Application
Priority
EP 16290089 A 20160525
Abstract (en)
The method comprises: - injecting a tracer gas at an injection point (152) in a drilling fluid intended to circulate in the wellbore; - circulating the drilling fluid containing the tracer gas from the injection point (152) to an exit of the wellbore; - extracting gas from the drilling fluid, the extraction being configured so that hydrocarbons and the tracer gas are extracted if present in the drilling fluid, - transporting the extracted gas to a measuring device (57) intended for detecting hydrocarbons; -detecting the tracer gas at the measuring device (57); -calculating the wellbore parameter based at least on a time of detection of the tracer gas. The tracer gas comprises at least a perfluorocarbon and/or a hydrofluorocarbon.
IPC 8 full level
E21B 21/08 (2006.01)
CPC (source: EP US)
E21B 21/08 (2013.01 - EP US)
Citation (applicant)
WO 9321420 A1 19931028 - AMEN RANDALL M [US]
Citation (search report)
- [Y] US 2012253677 A1 20121004 - FRUNZA GABRIEL [RO]
- [YD] WO 9321420 A1 19931028 - AMEN RANDALL M [US]
- [Y] US 2002134587 A1 20020926 - RESTER STEPHEN [US], et al
- [Y] US 2001036667 A1 20011101 - TAYEBI DAVOUD [NO], et al
- [Y] US 2016010454 A1 20160114 - SIRA TERJE [NO], et al
- [Y] US 4520109 A 19850528 - SIMMONDS PETER G [GB], et al
- [Y] WO 2010088681 A2 20100805 - INTELLISERV INTERNAT HOLDING L, et al
- [Y] JOHN H HEISER ET AL: "Using Lidar to Measure Perfluorocarbon Tracers for the Verification and Monitoring of Cap and Cover Systems", WATER, AIR, AND SOIL POLLUTION, KLUWER ACADEMIC PUBLISHERS, DO, vol. 170, no. 1-4, 1 February 2006 (2006-02-01), pages 345 - 357, XP019271228, ISSN: 1573-2932
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 MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 16290089 A 20160525