公开(公告)号：US20200240243A1

公开(公告)日：2020-07-30

申请号：US16747294

申请日：2020-01-20

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Haitao LI ,  Na WEI ,  Jinzhou ZHAO ,  Luling LI ,  Zhenjun CUI ,  Lin JIANG ,  Wantong SUN ,  Luyue YANG ,  Xi LI ,  Yinghe HONG ,  Yu QIAO

IPC: E21B41/00 ,  E21B47/00 ,  E21B49/00 ,  E21B49/08

Abstract: A method for intelligently determining hydrate drilling and production risks based on fuzzy judgment. First classifying monitoring parameters in a hydrate drilling and production process into layers from top to bottom: a target layer, a primary evaluation factor layer and a secondary evaluation factor layer; then calculating relative weight values of each primary evaluation factor and each secondary evaluation factor contained therein; then connecting in series the relative weight values of the primary evaluation factors with the relative weight values of the secondary evaluation factors to obtain an overall weight value of the secondary evaluation factors; repeating the foregoing steps; finally constructing the overall weight value of each secondary evaluation factor of each risk into a column vector to obtain a comprehensive determining weight matrix of hydrate drilling and production risks, and determining the risks in the hydrate drilling and production process by combining monitoring parameter change vectors.