非對稱電偶極在地層中的熱效應(yīng)解析解
Analytical solution about heating effects of a non-symmetrical dipole in lossy media
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摘要: 用近似法分析了有耗媒質(zhì)中非對稱電偶極的激勵(lì)場,得到一個(gè)場和焦耳熱的簡單的解析表達(dá)式。與傳統(tǒng)的對稱型半波振子公式相比較,其下端導(dǎo)體的電流分布表達(dá)式相同,當(dāng)下端導(dǎo)體為四分之一波長時(shí)激勵(lì)近場表達(dá)式相近。結(jié)合典型儲(chǔ)油層給出一些計(jì)算結(jié)果,對電磁波采油技術(shù)有參考價(jià)值。
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關(guān)鍵詞:
- 非對稱電偶極; 熱效應(yīng)解析解; 電磁波采油
Abstract: An approximate method is used to analyse the excited fields with a non-symmetrical dipole in lossy media and simple analytical expressions about the fields and joule heat are obtained. These expressions are compared with the formulas of traditional symmetrical half-wave dipole. Some calculated results are given for a typical oil reservior, which will be useful for the electromagnetic wave oil recovery technique. -
A. Chakma, K. N. Jha, Heating oil recovery from thin pay zone by electromagnetic heating, SPE 24817, 1992, 525-534.[2]M.Y. Xia, Z. Y. Chan, Attenuation predictions at extremely low frequencies for measurement while drilling electromagnetic telemetry system, IEEE-GRS, 1993, 31(6), 1222 1228.[3]Chen Zhiyu, Xia Mingyao, The frequency property of buried non-symmetrical dipole, International Journal of Electronics, 1993, 75(4), 783-793. ［4］R.W.P. King, K. IIZUKA, The complete electromagnetic field of a half-wave dipole in a dissipative medium, IEEE-AP, 1963, 11(5), 275-285. -
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