Crosswell Imaging Technology & Advanced DSR Navigation for Horizontal Directional Drilling

Larry Stolarczyk

关键词: BOREHOLES;    DETECTION;    DIRECTIONAL DRILLING;    DRILLING;    FUNCTIONALS;    MWD SYSTEMS;    NAVIGATION;    RADAR;    THICKNESS;   

DOI  :  10.2172/973559
RP-ID  :  None
PID  :  OSTI ID: 973559
Others  :  TRN: US201007%%260

学科分类：工程和技术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The objective of Phase II is to develop and demonstrate real-time measurement-while-drilling (MWD) for guidance and navigation of drill strings during horizontal drilling operations applicable to both short and long holes. The end product of Phase II is a functional drill-string assembly outfitted with a commercial version of Drill String Radar (DSR). Project Objectives Develop and demonstrate a dual-phase methodology of in-seam drilling, imaging, and structure confirmation. This methodology, illustrated in Figure 1, includes: (1) Using RIM to image between drill holes for seam thickness estimates and in-seam structures detection. Completed, February 2005; and (2) Using DSR for real-time MWD guidance and navigation of drillstrings during horizontal drilling operations. Completed, November 2008. As of November 2008, the Phase II portion of Contract DE-FC26-04NT42085 is about 99% complete, including milestones and tasks original outlined as Phase II work. The one percent deficiency results from MSHA-related approvals which have yet to be granted (at the time of reporting). These approvals are pending and are do not negatively impact the scope of work or project objectives.