Dissertation > Industrial Technology > Oil and gas industry > Oil machinery and equipment and automation > Drilling machinery equipment > Instruments, meters, auxiliary equipment > Measuring instruments while drilling

Research on MWD Gamma-ray Tool & the Calibration Method for It

Author YangQuanJin
Tutor GengYanFeng;XiaoHongBing
School China University of Petroleum
Course Control Engineering
Keywords MWD LWD natural gamma ray measuring instrument Formation gamma value Calibration method Single bus
CLC TE927.6
Type Master's thesis
Year 2007
Downloads 288
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During drilling , drilling engineering and geological staff hope to keep abreast of the formation parameters to adjust well trajectory , drill accurate drilling to reach the goal layer , increase drilling efficiency , and ultimately improve the oil recovery . Formation natural gamma values ??reflect how much of the formation of clay content , LWD gamma ray measurements to measure the to drill stratigraphic natural gamma values ??, combined with the depth data to map out the formation - gamma curve . In this paper, with the drilling of natural gamma measurement instrument of significance , radioactive measurement principle and instrument principles depth analysis, based on the detailed discussion of the content of the study of the natural gamma ray measuring instrument while drilling , and focused on the system hardware and software implementations , while drilling equipment takes a long time to work in the environment of high temperature , high pressure , strong motion , put forward higher requirements of actual instrument reliability , analyze the sources and characteristics of the interference with an appropriate anti-jamming measures LWD natural gamma ray measuring instrument to achieve the requirements of field application , the last part of the instrument practical application test and field validation of the instrument characteristics and indicators .

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