高压差越孔密封技术.pdf

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高压差越孔密封技术

2008 8 Aug. 2008 33 8 LUBRICATION ENGINEERING Vol133No18 DO I: 101 3969/j1 issn10254- 0150120091 081 030 ( 257000) : , 3, , 3, , 5 , : ; ; ; : TB42 : A : 0254- 0150 ( 2009) 8- 119- 3 Seal Technology of Pass H ole under H igh P ressure W ang S h ij ei ( ShengliOilProduction Research Institute, Dongying Shandong 257000, China) A bstract: There are so e seal proble swhen seal rings pass a hole under high pressure in downhole tools, such as sleeves etc. In order to get reliable seal after sleeve through a hole frequently. Three passing hole seal technologies, inclu- ding pressurebalance passing hole sea,l doubleO-ring sealasse bly and profile ring sealwere tested. The resultsshow that the three seal technologies can eet the application request fro one trip to several ti es pass hole sealunder high pres- sure for the downhole tools in oilfield. Pressure balance passing hole sealcan eet the de and of long ter frequent seal application, double O-ring sealasse bly can seal less than 5 ti es, and profile ring seal can be used by one-ti e-pass. K eyw ords: sleeve; high pressure; passhole; seal , , , , , , , 20MPa , , , , , , , , , , 3, ,

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