公开(公告)号：US10358917B2

公开(公告)日：2019-07-23

申请号：US14741913

申请日：2015-06-17

Applicant: Schlumberger Technology Corporation

Inventor： Koksal Cig ,  Cosan Ayan ,  Morten Kristensen

IPC: G01V8/02 ,  E21B49/08 ,  E21B49/00 ,  E21B49/10 ,  G01N15/08

Abstract: An apparatus is operated to obtain a model predicting data associated with a theoretical sampling operation to be performed by a downhole sampling tool, including predicted water-cut and pressure data relative to time elapsed during the theoretical sampling operation. The model predicts the water-cut and pressure data based on estimated relative permeability and capillary pressure related to different constituents of fluid theoretically obtained from a subterranean formation by the downhole sampling tool during the theoretical sampling operation. An actual sampling operation is performed with the downhole sampling tool to actually obtain fluid and data associated with the actually obtained fluid, including actual water-cut and drawdown pressure data. The apparatus is then operated to update the model utilizing the actual data water-cut and drawdown pressure data, thus obtaining actual relative permeability and capillary pressure data.

公开(公告)号：US20150369957A1

公开(公告)日：2015-12-24

申请号：US14741913

申请日：2015-06-17

Applicant: Schlumberger Technology Corporation

Inventor： Koksal Cig ,  Cosan Ayan ,  Morten Kristensen

IPC: G01V8/02

CPC classification number: E21B49/08 ,  E21B49/00 ,  E21B49/088 ,  E21B49/10 ,  G01N15/0826

Abstract: An apparatus is operated to obtain a model predicting data associated with a theoretical sampling operation to be performed by a downhole sampling tool, including predicted water-cut and pressure data relative to time elapsed during the theoretical sampling operation. The model predicts the water-cut and pressure data based on estimated relative permeability and capillary pressure related to different constituents of fluid theoretically obtained from a subterranean formation by the downhole sampling tool during the theoretical sampling operation. An actual sampling operation is performed with the downhole sampling tool to actually obtain fluid and data associated with the actually obtained fluid, including actual water-cut and drawdown pressure data. The apparatus is then operated to update the model utilizing the actual data water-cut and drawdown pressure data, thus obtaining actual relative permeability and capillary pressure data.

Abstract translation: 操作装置以获得预测与由井下采样工具执行的理论采样操作相关联的数据的模型，包括相对于在理论抽样操作期间经过的时间的预测的水切割和压力数据。 该模型基于在理论抽样操作期间由井下采样工具从地下地层理论上获得的流体的不同成分相关的估计的相对渗透率和毛细管压力，预测了水分和压力数据。 利用井下采样工具进行实际采样操作，以实际获得与实际获得的流体相关的流体和数据，包括实际的水分和压降数据。 然后操作该装置，利用实际的数据切割和抽取压力数据更新模型，从而获得实际的相对渗透率和毛细管压力数据。