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| Determining breakdown pressures in transversely isotropic formation by multipole array acoustic logs |
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GAO Kun1,TA0 Guo1,WU Yue-qi2,MA Yong2,T1AN Bin3
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(1. Key Laboratory of Well Logging of China National Petroleum Corporation, China University of Petroleum，Beijing 102249 9 China;2. Research Institute of Engineering & Technology of Xibei Branch, China Petrochemical Corporation，Urumqi 830011，China ;3. Logging & Testing Services Company of Shenyang Oil Production Plant in liaohe Oilfield,Panjin 110316, Liaoning Province, China)
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| Abstract: |
| Determining breakdown pressure in an anisotropic formation is important in oil and gas exploration and production. The equations of three principal in-situf stresses in a transversely isotropic formation were formulated. The elastic parameters and breakdown pressure were determined in such a formation by multipole array acoustic logs. Subsequently the method was developed. Implementations of this method as multipole acoustic analysis software on the field carbonate formation data from the oilfield were presented and compared with that from isotropic formation model. The data demonstrate that the new model is more realistic and closer to the field monitoring results. |
| Key words: multipole array acoustic log isotropy formation stress breakdown pressure |
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