Abstract
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Article Information:
Prediction Method of Safety Mud Density in Depleted Oilfields
Zhao Kai, Deng Jin-Gen, Tan Qiang, Yu Bao-Hua and Yuan Jun-Liang
Corresponding Author: Zhao Kai
Submitted: November 08, 2012
Accepted: January 01, 2013
Published: April 05, 2013 |
Abstract:
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At present, many oilfields were placed in the middle and late development period and the reservoir pressure depleted usually, resulting in more serious differential pressure sticking and drilling mud leakage both in the reservoir and cap rock. In view of this situation, a systematic prediction method of safety mud density in depleted oilfields was established. The influence of reservoir depletion on stress and strength in reservoir and cap formation were both studied and taken into the prediction of safety mud density. The research showed that the risk of differential pressure sticking and drilling mud leakage in reservoir and cap formation were both increased and they were the main prevention object in depleted oilfields drilling. The research results were used to guide the practice drilling work, the whole progress gone smoothly.
Key words: Cap, depleted oilfields, prediction method, reservoir, safety mud density, ,
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Abstract
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Cite this Reference:
Zhao Kai, Deng Jin-Gen, Tan Qiang, Yu Bao-Hua and Yuan Jun-Liang, . Prediction Method of Safety Mud Density in Depleted Oilfields. Research Journal of Applied Sciences, Engineering and Technology, (11): 3230-3238.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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