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套管阀在夏72井的应用 被引量:7
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作者 刘伟 聂世江 +1 位作者 陈俊英 王小康 《钻采工艺》 CAS 2004年第3期95-96,100,共3页
在以往油田的勘探开发中 ,欠平衡钻井技术允许地层压力大于钻井液液柱作用于井底的压力 ,但在起下钻作业中 ,为保证安全 ,往往需先进行压井施工 ,这就难以使井底一直处于欠平衡状态。在夏 72井三开欠平衡井施工中 ,施工人员在国内首次... 在以往油田的勘探开发中 ,欠平衡钻井技术允许地层压力大于钻井液液柱作用于井底的压力 ,但在起下钻作业中 ,为保证安全 ,往往需先进行压井施工 ,这就难以使井底一直处于欠平衡状态。在夏 72井三开欠平衡井施工中 ,施工人员在国内首次应用了套管阀 (DDV) ,该套管阀产自美国Weatherford公司 ,外径为 2 4 4 .5 0 ,这种尺寸的套管阀目前在世界上也是首次使用。它使夏 72井三开欠平衡起下钻成为现实 ,这项技术势必将进一步完善和推进欠平衡钻井工艺的发展。 展开更多
关键词 套管阀 欠平衡钻井技术 地层压力 钻井液
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重庆云阳县李家坝Ⅰ区水田遗址发掘简报 被引量:3
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作者 罗二虎 周克林 +5 位作者 吴桂兵 周静 聂世江 程红坤 温小华 王东元 《考古》 CSSCI 北大核心 2001年第11期42-50,共9页
The Lijiaba site lies at Qingshu village of Gaoyang town in Yunyang county,Chongqing city, on the first terrace by the eastern bank of the Pengxi River, a northern tributary of the Yangtze River, and is an important a... The Lijiaba site lies at Qingshu village of Gaoyang town in Yunyang county,Chongqing city, on the first terrace by the eastern bank of the Pengxi River, a northern tributary of the Yangtze River, and is an important ancient cultural vestige in the zone to be submerged within the area of the Yangtze Three Gorges Reservoir. In 1997, excavation was carried out in Area I of the site. The Tang and later cultural layers excavated this time are largely related to agrecultural activities, though a part of them were found to be flood-left silt layers. In the fifth, ninth and fourteenth strata, many remains can be linked with rice cultivation, including extensive paddy fields, ridges, water outlets, remains of green paddy, human footprints and ox-hoof impressions. They go back, respectively, to Tang-Song times, the mid Ming to early Qing, and the Qing period. In addition, Various porcelain articles and a small number of pottery vessels, bronzes and irons were unearthed from different layers of paddy fields. 展开更多
关键词 遗址发掘简报 云阳县 水田
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