EP 2850157 A1 20150325 - IN-SITU METHOD AND SYSTEM FOR REMOVING HEAVY METALS FROM PRODUCED FLUIDS
Title (en)
IN-SITU METHOD AND SYSTEM FOR REMOVING HEAVY METALS FROM PRODUCED FLUIDS
Title (de)
IN-SITU VERFAHREN UND SYSTEM ZUR BESEITIGUNG VON SCHWERMETALLEN AUS PRODUZIERTEN FLÜSSIGKEITEN
Title (fr)
PROCÉDÉ IN SITU ET SYSTÈME PERMETTANT D'ÉLIMINER LES MÉTAUX LOURDS DE FLUIDES PRODUITS
Publication
Application
Priority
- US 201261647999 P 20120516
- US 201261647983 P 20120516
- US 2013041433 W 20130516
Abstract (en)
[origin: WO2013173634A1] Methods and systems relate to the in-situ removal of heavy metals such as mercury, arsenic, etc., from produced fluids such as gases and crudes from a subterranean hydrocarbon-bearing formation. A sufficient amount of a fixing agent is injected into formation with a dilution fluid. The fixing agent reacts with the heavy metals forming precipitate, or is extracted heavy metals into the dilution fluid as soluble complexes. In one embodiment, the heavy metal precipitates remain in the formation. After the recovery of the produced fluid, the dilution fluid containing the heavy metal complexes is separated from the produced fluid, generating a treated produced fluid having a reduced concentration of heavy metals. In one embodiment, the dilution fluid is water, and the wastewater containing the heavy metal complexes after recovery can be recycled by injection into a reservoir.
IPC 8 full level
C10G 29/10 (2006.01); C10G 21/22 (2006.01); C10G 29/28 (2006.01); E21B 43/34 (2006.01)
CPC (source: CN EP US)
C10G 1/002 (2013.01 - CN); C10G 1/02 (2013.01 - CN); C10G 1/04 (2013.01 - CN); C10G 21/00 (2013.01 - CN); C10G 21/22 (2013.01 - EP); C10G 29/10 (2013.01 - EP); C10G 29/28 (2013.01 - CN EP); E21B 43/35 (2020.05 - CN EP US); C10G 2300/1033 (2013.01 - CN EP); C10G 2300/205 (2013.01 - CN EP); C10G 2300/4037 (2013.01 - CN EP)
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)
WO 2013173634 A1 20131121; AR 093279 A1 20150527; AU 2013262645 A1 20141106; BR 112014026597 A2 20170627; CA 2872808 A1 20131121; CL 2014003083 A1 20150213; CN 104583372 A 20150429; EP 2850157 A1 20150325; EP 2850157 A4 20160302
DOCDB simple family (application)
US 2013041433 W 20130516; AR P130101704 A 20130516; AU 2013262645 A 20130516; BR 112014026597 A 20130516; CA 2872808 A 20130516; CL 2014003083 A 20141113; CN 201380025179 A 20130516; EP 13791572 A 20130516