水平井套管固井关井工具研制与应用  被引量:1

Development and Application of Casing Cementing Shut-down Valve in Horizontal Wells

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作  者:黄占盈[1,2] 段志锋[1,2] 张燕娜[1,2] 陈春宇[1,2] 吴学升[1,2] 

机构地区:[1]长庆油田油气工艺研究院,西安710018 [2]低渗透油气田勘探开发国家工程实验室,西安710018

出  处:《石油矿场机械》2015年第4期84-86,共3页Oil Field Equipment

基  金:中国石油集团(股份)公司重大科技专项"致密气藏开发重大工程技术研究"(2010E-2303)

摘  要:长庆油田规模应用水平井固井+分段压裂工艺,实现了低渗透油气藏的高效开发。由于水平井套管固井的特殊性,固井施工完成后浮箍浮鞋单流阀功能易失效,不能实现有效断流,导致大量的井留水泥塞影响后期作业。针对以上问题,借鉴关闭滑套原理,研制了套管关井滑套及配套固井胶塞,在固井施工完毕实现碰压后可以实现硬关井,克服了传统单流阀断流易失效等问题。现场开展了200余口水平井固井试验,关井成功率100%,后期探人工井底表明,水泥塞满足压裂要求。Horizontal well cementing and staged fracturing technologies were applied in Changqing oil field on a scale, which achieved the efficient development of low permeability reservoirs. But horizontal well casing cementing is special, non-return valve function is easy to fail in float collar and shoe after cementing. It can't effectively cut off flowing and lead to cement plug in a large number of wells. Facing with these problems, shut-in casing valves and matching cementing plugs were developed, which can close the sliding sleeve to cut off flowing. So it can overcome the failure of traditional non-return valve. Horizontal well cementing experiment was carried out in more than 200 holes,and shut-in success rate reached 100%. The late artificial bottom hole shows that it can meet the demands of fracturing.

关 键 词:水平井 关井滑套 固井胶塞 单流阀 

分 类 号:TE925[石油与天然气工程—石油机械设备]

 

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