公开(公告)号：US20190187108A1

公开(公告)日：2019-06-20

申请号：US15843613

申请日：2017-12-15

申请人： Svenja Erdmann ,  Brian Ochoa

发明人： Svenja Erdmann ,  Brian Ochoa

IPC分类号： G01N30/14 ,  G01N30/60 ,  G01N30/68

CPC分类号： G01N30/14 ,  G01N30/60 ,  G01N30/68 ,  G01N2030/025

摘要： A method of analyzing formation fluids includes introducing a fluid sample into a chromatograph system, passing the fluid sample through a pre-column including a polar column member and a apolar column member in a first flow direction, separating polar constituents from the fluid sample in the pre-column forming an analytical fluid, passing the analytical fluid through a main column of the chromatograph system, and analyzing the analytical fluid in the main column.

公开(公告)号：US10598010B2

公开(公告)日：2020-03-24

申请号：US15238424

申请日：2016-08-16

申请人： Svenja Erdmann ,  Stefan Wessling ,  Nicklas J. Ritzmann ,  Oliver Mohnke ,  Holger F. Thern

发明人： Svenja Erdmann ,  Stefan Wessling ,  Nicklas J. Ritzmann ,  Oliver Mohnke ,  Holger F. Thern

IPC分类号： E21B49/00 ,  E21B49/08

摘要： A method for generating a phase envelope log to characterize a subsurface formation includes drilling the borehole with a drill string, circulating a drilling fluid in the borehole, drawing a fluid sample representing a fluid contained in the subsurface formation, estimating a PVT parameter indicative of an in-situ condition of the subsurface formation from the drawn fluid sample, determining at least two phase envelopes at different depths using the estimated PVT parameter, and creating a phase envelope log formed of a continuous series of phase envelopes using the phase envelopes. A related system includes a drill string, a fluid sampling system, and a processor that estimates a PVT parameter indicative of an in-situ condition of the subsurface formation, determines at least two phase envelopes at different depths using the PVT parameter, and creates the phase envelope log.

公开(公告)号：US11525822B2

公开(公告)日：2022-12-13

申请号：US16819793

申请日：2020-03-16

申请人： Bastian Baecker ,  Alex Bruns ,  Jessica Raines ,  Umesh Prasad ,  Svenja Erdmann ,  Ian McGlynn ,  Frank Walles

发明人： Bastian Baecker ,  Alex Bruns ,  Jessica Raines ,  Umesh Prasad ,  Svenja Erdmann ,  Ian McGlynn ,  Frank Walles

IPC分类号： E21B49/08 ,  G01N33/28

摘要： A method of monitoring a subterranean operation includes sampling fluid from a borehole during the operation, and estimating, in near real time, a concentration of one or more gases in the sampled fluid and an isotope composition of the sampled fluid. The method also includes identifying an operational inefficiency in the operation based on the isotope composition associated with the one or more gases, and performing, during the operation, at least one of: alerting an operator and adjusting an operational parameter of the operation, based on identifying the operational inefficiency.

公开(公告)号：US20210285927A1

公开(公告)日：2021-09-16

申请号：US16819793

申请日：2020-03-16

申请人： Bastian Baecker ,  Alex Bruns ,  Jessica Raines ,  Umesh Prasad ,  Svenja Erdmann ,  Ian McGlynn ,  Frank Walles

发明人： Bastian Baecker ,  Alex Bruns ,  Jessica Raines ,  Umesh Prasad ,  Svenja Erdmann ,  Ian McGlynn ,  Frank Walles

IPC分类号： G01N33/28 ,  E21B49/08

摘要： A method of monitoring a subterranean operation includes sampling fluid from a borehole during the operation, and estimating, in near real time, a concentration of one or more gases in the sampled fluid and an isotope composition of the sampled fluid. The method also includes identifying an operational inefficiency in the operation based on the isotope composition associated with the one or more gases, and performing, during the operation, at least one of: alerting an operator and adjusting an operational parameter of the operation, based on identifying the operational inefficiency.