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《Well Logging Technology》 2003-02
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Two New Methods for Cased Hole Wireline Formation Test

Ma Jianguo, Guo Liaoyuan, et al.  
This paper introduces two new methods for cased hole wireline formation test. One is to make formation test by using CHDT. The tool uses a flexible shaft to drill holes through casing,cement and formation,measure each reservoir pressure,collect fluid samples and seal the holes. Pressure and flow rate measurements can be made in real time, and repeatable pretests can be performed at each pressure test point. Pressure profiling,formation fluid gradient determination and formation parameters estimation can now be effectively accomplished in cased holes. Large-volume samples and PVT-quality samples can be taken by combining modules from both the cased hole and openhole formation testers. The other is to make cased hole formation test by way of using MDT. The tool perforates at a 305 mm interval via wineline,fixing the testing tool at the perforated zone with straddle packers,and pumping formation fluids through the tool to catch representative samples. At the same time,this paper introduces apparatus components,structure,functions and oilfield test results.
【CateGory Index】: TE353
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【References】
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【Co-references】
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1 Yu Yongbo, Yu Xiangjiang, et al ..;Research of a Through Annulus Fluid Sampler and Its Application[J];Well Logging Technology;2001-04
2 Wang Aimin.;Sector Cement Bond Tool and Its Applications in the Cased Holes.[J];Well Logging Technology;2003-S1
3 QIAO Wen-xiao,CHE Xiao-hua(Faculty of Natural Resources & Information Technology,China University of Petroleum,Beijing 102249,China);The Effects of Casing Diameter on Acoustic Log in Cased-borehole[J];Well Logging Technology;2005-04
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10 XIE Jinzhuang1,SONG Guofeng2,ZHANG Dehui1(1.Logging & Testing Services,Daqing Oilfield Company,Daqing,Heilongjiang 163453,China;2.Daqing Drilling & Exploration Engineering Corporation,Daqing,Heilongjiang 163458 China);Study on the Measurement Range and Accuracy of Russian ЭКOC-31-7 Through Casing Resistivity Logging Tool[J];Well Logging Technology;2012-05
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