第三十一届国际海洋技术年会（ＯＴＣ）于１９９９年５月３日至６日在美国德克萨斯州休斯顿市举行，主办单位为美国采矿、冶金和石油工程师学会；采矿、冶金和勘探协会；矿产、金属和材料协会；美国石油工程师协会；美国石油地质家协会；美国化学工程师协会；海洋技术学会；美 The 31st International Ocean Technology Annual Meeting (OTC) was held in Houston, Texas, USA, May 3-6, 1999 with the sponsors of the American Institute of Mining, Metallurgical and Petroleum Engineers; the Mining, Metallurgy and Petroleum Engineers Society Exploration Association; Association of Minerals, Metals and Materials; American Petroleum Engineers Association; American Petroleum Geologists Association; American Association of Chemical Engineers; Marine Technology Society;