公开(公告)号：US20200240963A1

公开(公告)日：2020-07-30

申请号：US16638129

申请日：2018-08-16

Applicant: BP Exploration Operating Company Limited

Inventor： John William Couves ,  Christianne Clare Wicking

IPC: G01N30/72 ,  G01N33/28 ,  G01N1/38 ,  B01J20/281 ,  G01N30/86

Abstract: A method for analysing a crude oil to determine the amount of organic acid compounds contained in the crude oil includes extracting the organic acid compounds from a sample of crude oil to form an extract and determining the amount of the extracted organic acids In addition, the method includes dissolving the extract in a polar solvent to form a solution of the extracted organic acid compounds Further, the method includes introducing a sample of the solution of the extracted organic acid to an apparatus including a reversed phase liquid chromatography (LC) column and a mass spectrometer (MS) arranged in series. The reversed phase LC column contains a hydrophobic sorbent and the mobile phase for the LC column includes a polar organic solvent. Still further, the method includes separating the organic acid compounds in the LC column of the LC-MS apparatus and continuously passing the separated organic acid compounds from the LC column to the MS of the LC-MS apparatus to ionize the organic acid compounds and to obtain a chromatogram with mass spectral data over time for the ionized organic acid compounds. Moreover, the method includes determining the area(s) under the peak(s) in an extracted ion chromatogram derived from the mass spectral data assigned to one or more organic acid compounds. The method also includes determining the amount of the organic acid compound(s) in the sample by comparing the area under the peak(s) assigned to the organic acid compound(s) with the area under a peak in an extracted ion chromatogram assigned to a specific amount of a standard organic acid compound. In addition, the method includes extrapolating from the amount of the organic acid compound(s) in the sample to provide the total amount of the organic acid compound(s) in the extract.

公开(公告)号：US20190100996A1

公开(公告)日：2019-04-04

申请号：US16086662

申请日：2017-03-14

Applicant: BP Exploration Operating Company Limited

Inventor： Ian Ralph Collins ,  John William Couves ,  Michael Graham Hodges ,  Christian Schack Pedersen ,  Peter Anthony Salino ,  Christianne Clare Wicking

IPC: E21B49/08 ,  G01N33/28 ,  E21B43/20

Abstract: A method for detecting incremental oil production from an oil-bearing reservoir includes taking a baseline sample of the oil and analyzing the baseline sample of oil to establish a baseline compositional signature for the oxygen-containing organic compounds in the oil. In addition, the method includes commencing a low salinity waterflood by injecting a low salinity water into the reservoir from an injection well. Further, the method includes recovering oil from a production well. Still further, the method includes taking post-flood samples of the oil produced from the production well over time. The method also includes analyzing the post-flood samples of oil to establish post-flood compositional signatures for the oxygen-containing organic compounds in the oil. Moreover, the method includes identifying a difference between one or more of the post-flood compositional signatures and the baseline compositional signature that is characteristic of incremental oil released by the low salinity waterflood.

公开(公告)号：US09804062B2

公开(公告)日：2017-10-31

申请号：US14977997

申请日：2015-12-22

Applicant: BP EXPLORATION OPERATING COMPANY LIMITED

Inventor： Ian Ralph Collins ,  John William Couves ,  Bogdan Costin Gagea ,  Arnaud Lager ,  Kevin John Webb

IPC: E21B43/20 ,  G01N1/00 ,  G01N15/08

CPC classification number: G01N1/00 ,  E21B43/20 ,  G01N15/082

Abstract: The invention relates to an apparatus for simultaneously injecting fluids into a plurality of samples of porous media, comprising: a plurality of holders for the samples of porous media, each holder comprising a sleeve and first and second platens, the first platen having an inlet for an injection fluid and the second platen having an outlet for a produced fluid, and the samples of porous media being arranged, in use, in each of the holders such that the first platen and second platen of each holder contact a first and second end of the sample of porous medium respectively, the inlet of each first platen being in fluid communication with an injection line for injecting fluid into the sample of porous medium arranged in the holder, the outlet of each second platen being in fluid communication with a dedicated effluent line for removing fluid produced from the sample of porous medium arranged in the holder, on-line and/or off-line analytical means for analyzing the fluids injected into each of the samples of porous media, on-line and/or off-line means for analyzing the fluids removed from each of the samples of porous media. A method of simultaneously injecting injection fluid into the samples of porous media is also provided.

公开(公告)号：US20200248514A1

公开(公告)日：2020-08-06

申请号：US16637285

申请日：2018-08-09

Applicant: BP Exploration Operating Company Limited

Inventor： Ian Ralph Collins ,  John William Couves ,  John Henry Crouch ,  John Dale Williams

IPC: E21B21/06 ,  E21B43/20 ,  E21B49/00

Abstract: An integrated system includes a desalination plant including a reverse osmosis (RO) array to produce an RO permeate blending stream and a nanofiltration (NF) array to produce an NF permeate blending stream. The integrated system also includes a blending system, a control unit, and an injection system for an injection well that penetrates an oil-bearing layer of a reservoir. The blending system is to blend the RO permeate blending stream and the NF permeate blending stream to produce a blended injection water stream. The control unit is to dynamically alter operation of the blending system to adjust amounts of at least one of the RO permeate blending stream and the NF permeate blending stream to alter the composition of the blended injection water stream from an initial composition to a target composition.

公开(公告)号：US20200230554A1

公开(公告)日：2020-07-23

申请号：US16645426

申请日：2018-09-12

Applicant: BP Exploration Operating Company Limited

Inventor： Ian Ralph Collins ,  John William Couves ,  John Henry Crouch ,  John Dale Williams

IPC: B01D61/02 ,  E21B43/20 ,  B01D61/08 ,  C02F1/44 ,  C02F1/68 ,  B01F3/08 ,  B01F15/04 ,  C09K8/58

Abstract: A method includes producing a first blended low salinity injection water for injection into at least one injection well that penetrates a first region of an oil-bearing reservoir and producing a second blended low salinity injection water for injection into at least one injection well that penetrates a second region of an oil-bearing reservoir. The reservoir rock of the first and second regions has first and second rock compositions, respectively, that present different risks of formation damage. The first and second blended low salinity injection waters comprise variable amounts of nanofiltration permeate and reverse osmosis permeate. The compositions of the first and second blended low salinity injection waters are maintained within first and second predetermined operating envelopes, respectively, that balance improving enhanced oil recovery from the first and second regions while reducing formation damage upon injecting the first and second blended low salinity injection waters into the oil-bearing reservoir.