›› 2006, Vol. 27 ›› Issue (S1): 493-496.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Creep rate and creep parameters analysis of rock layer in drilling engineering

CHEN Feng1, TANG Dai-xu2, YANG Chun-he1   

  1. 1. Key Laboratory of Rock and Soil Mechanics, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Oilfield Chemistry Department, Drilling Technology Institute, Shengli Petroleum Administration Bureau, Dongying, 257017
  • Received:2006-04-20 Published:2006-12-15

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Abstract: The salt rock layer and the soft mudstone layer with salt, which have the low permeability, are usually the sealing layer of the large-scale oil-gas pool in the oil geology exploratory engineering. Thanks to the creep behavior of salt rock, the drilling technique in the salt rock layer becomes the difficult problem of drilling engineering. Based on the measured result of the drilling hole diameter between the different time, the creep rates of the rock layers in the deep stratum are obtained. The creep rate of the soft mudstone with salt is maximal. Secondly is the salt rock layer. The exponent creep constitutive law is employed to analyze the creep rate of rock layer in the three-dimensional numerical method. The creep parameters of salt rock and mudstone with salt are obtained. The parameters can be used in the optimizing analysis of the drilling mud density.

Key words: salt rock, mudstone with salt, creep, damage, drilling mud density

CLC Number: 

  • TU 452
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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