公开(公告)号：EP2633285A1

公开(公告)日：2013-09-04

申请号：EP11849108.3

申请日：2011-08-25

申请人： Services Pétroliers Schlumberger ,  Schlumberger Holdings Limited ,  Schlumberger Technology B.V. ,  PRAD Research and Development Limited

发明人： LAWRENCE, Jimmy ,  VAN HAL, Ronald ,  LAM, Jane

IPC分类号： G01N21/25 ,  G01N31/00

CPC分类号： G01N21/643 ,  C09K8/532 ,  C09K2208/20 ,  G01N21/31 ,  G01N33/004 ,  G01N33/0044 ,  Y10T436/184

摘要： Methods and related apparatuses and mixtures are described for spectroscopic detection of hydrogen sulfide in a fluid, for example a formation fluid downhole. A reagent mixture is combined with the fluid. The reagent mixture includes metal ions for reacting with hydrogen sulfide forming a metal sulfide, and a capping agent that limits growth of the insoluble metal sulfide species by electrosteric or steric stabilization. The particle growth is one of chemical reaction or significant aggregation, and the capping agent further functionalizes the reagent mixture to exhibit properties outside the natural characteristics of the metal sulfide species to allow for spectroscopic detection of the metal sulfide species. The combined mixture and fluid is then spectroscopically interrogated to detect the presence of the metal sulfide thereby indicating the presence of hydrogen sulfide in the fluid. The mixture also includes chelating ligands for sustaining thermal endurance of the mixture under downhole conditions.

公开(公告)号：EP2622384A2

公开(公告)日：2013-08-07

申请号：EP11847994.8

申请日：2011-12-07

申请人： Schlumberger Technology B.V. ,  Schlumberger Holdings Limited ,  Services Pétroliers Schlumberger ,  Prad Research And Development Limited

发明人： LAWRENCE, Jimmy ,  TU, Huilin ,  LAM, Jane ,  AGARWALLA, Rekha ,  VAN HAL, Ronald E. G.

IPC分类号： G01V9/00 ,  E21B49/08 ,  E21B47/00

CPC分类号： E21B49/10 ,  E21B2049/085 ,  G01N11/00 ,  G01N21/3577

摘要： A method for analyzing formation fluid in a subterranean formation is disclosed, wherein the method includes the steps of: adding a scavenger compound to an analytical reagent to form a reagent solution; collecting an amount of formation fluid into a formation tester, wherein the formation tester includes at least one fluids analyzer comprising at least one probe, at least one flow line, at least one reagent container, and at least one spectral analyzer, wherein the fluids analyzer is configured such that the collected formation fluid is fed through the at least one flow line to the at least one spectral analyzer; mixing an amount of the collected formation fluid with an amount of the reagent solution to form a mixture; and analyzing the mixture downhole.