Strain-Based Casing Design for Cyclic-Steam-Stimulation Wells
- Lihong Han (Tubular Goods Research Institute of CNPC and State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Material) | Hang Wang (Tubular Goods Research Institute of CNPC and State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Material) | Jianjun Wang (Tubular Goods Research Institute of CNPC and State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Material) | Bin Xie (Xinjiang Oilfield Company of CNPC) | Zhihua Tian (Xinjiang Oilfield Company of CNPC) | Xingru Wu (University of Oklahoma)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- May 2018
- Document Type
- Journal Paper
- 409 - 418
- 2018.Society of Petroleum Engineers
- thermal well casing, cyclic steam stimulation, strain based design, thermal elastic-plastic, safety evaluation
- 4 in the last 30 days
- 239 since 2007
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An oil field in Xinjiang, China, experienced a casing failure rate of 15 to 30% in thermal wells, mainly relating to inadequate protocols of casing design. This paper presents a new strain-based casing-design method. New material parameters are proposed to build safety-evaluation principles throughout the service life of a thermal well. In addition, a gas-tight thread joint is applied to prevent steam leakage that otherwise would cause a large transversal stress between different formations, and result in slip deformation of the casing string. Field practices have shown that the new method’s fitness works better for thermal wells than previously used methods.
|File Size||1 MB||Number of Pages||10|
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