%0 Dataset
%T Patent collection of research on disaster risk assessment, control and environmental protection technology of drilling in polar cold sea
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/ca57e9f2-d2f6-48f4-acb6-35a9c456ac4a
%W NCDC
%R 10.12072/ncdc.SRIPE.db1701.2022
%A Ke ke
%K Polar cold sea;drilling technology;disaster assessment;environmental protection technology
%X There are 10 invention patents produced by the research on disaster risk assessment control and environmental protection technology of polar cold sea drilling, which are respectively the selection method of drilling fluid for subsea drilling and its application in the calculation of drilling depth; The invention relates to a wellhead attitude monitoring system and a method suitable for the whole process of deep water jet down pipe; Downhole flow channel pressure control device, downhole pressure control drilling system and drilling method; A portable seabed shallow geological disaster simulation device; A deep-water high-pressure simulation experiment device; The invention relates to a stimulation device and a method for stable separate production of natural gas hydrate; The invention relates to a monitoring device and a monitoring method for temperature change during drilling in frozen soil layer; The invention relates to a simulation device and a simulation method for wellhead sinking during drilling in permafrost layer; Simulation device and method for thawing settlement test of frozen soil stratum; The apparatus and method for simulating the thermal settlement of hydrate bearing strata. These include authorized and applied patents.