(CN111287689) Single-slip full-soluble oil pipe plugging bridge plug 机翻标题: 暂无翻译,请尝试点击翻译按钮。

源语言标题
(CN111287689) Single-slip full-soluble oil pipe plugging bridge plug
公开号/公开日
CN111287689 / 2020-06-16
申请号/申请日
CN202010294721 / 2020-04-15
发明人
LIU LIMINGWANG XINLIN BAIHUIDAN YANKUI;
申请人
SOUTHWEST PETROLEUM UNIVERSITY;
主分类号
IPC分类号
E21B-023/06 E21B-033/134 E21B-043/26
摘要
(CN111287689) The invention relates to a single-slip fully-soluble oil pipe plugging bridge plug for oil and gas development and exploitation, which comprises a soluble central pipe, a baffle ring, a protective back ring, a soluble rubber cylinder, an upper cone, a fully-soluble slip, a lower cone, a guide shoe and a soluble plug, wherein the soluble central pipe is of a hollow structure; the protective back ring and the baffle ring are arranged above the soluble central pipe, and the soluble rubber cylinder is arranged between the first protective back ring and the second protective back ring; the surface of the lower part of the soluble central tube is provided with threads, and the upper cone and the lower cone are sleeved on the lower part of the soluble central tube; the fully soluble slips are sleeved on the soluble central pipe, and the soluble central pipe is provided with an upper part with threads and forms a gap with the threads; the soluble plug and the guide shoe are connected to the tail part of the soluble central tube through pins. All structures of the bridge plug are made of soluble materials, the soluble plug replaces the function of a fracturing ball, the bridge plug can bear pressure up and down, the plug is pressed in an oil pipe after operation and falls to a well bottom, drilling and grinding or taking out are not needed, the bridge plug can be completely dissolved by only utilizing well bottom return fluid, the operation time is saved, and the economic benefit is improved.
机翻摘要
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地址
代理人
代理机构
;
优先权号
2020CN-0294721
主权利要求
(CN111287689) 1.一种单卡瓦全可溶油管封堵桥塞,其特征在于,包括可溶中心管、挡环、保护背圈、可溶胶筒、上锥体、全可溶卡瓦、下锥体、导鞋和可溶堵头,可溶中心管为中空结构;保护背圈与挡环安装在可溶中心管上方,可溶胶筒设在第一、第二保护背圈之间;可溶中心管下部表面设有螺纹,上、下锥体套装与可溶中心管下部;全可溶卡瓦套装可溶中心管具有螺纹处的上方并且与之形成间隙;可溶堵头与导鞋通过销钉连接在可溶中心管尾部。 2.如权利要求1所述的一种单卡瓦全可溶油管封堵桥塞,其特征在于,全可溶卡瓦表层设置为颗粒直径为0.15-0.28mm的镍基合金颗粒的硬质合金涂层。 3.如权利要求2所述的一种单卡瓦全可溶油管封堵桥塞,其特征在于,每一所述可溶卡瓦的两端均设置有凹槽,将C型环套装在所述凹槽内实现固定。 4.如权利要求3所述的一种单卡瓦全可溶油管封堵桥塞,其特征在于,所述可溶中心管的下部外壁设为锯齿螺纹段,所述上锥体通过内壁的单向锁定螺纹与中心管装配,其受到坐封力后向下锥体单向移动,所述下锥体通过螺纹连接固定在所述可溶中心管螺纹段的下端。 5.如权利要求4所述的一种单卡瓦全可溶油管封堵桥塞,其特征在于,所述导鞋、可溶堵头和可溶中心管通过销钉连接,所述销钉为可剪断的销钉。 6.如权利要求5所述的一种单卡瓦全可溶油管封堵桥塞,其特征在于,上锥体、下锥体的锥角均不超过10°,可溶卡瓦11两端内侧锥角与两锥体相同。 7.如权利要求6所述的一种单卡瓦全可溶油管封堵桥塞,其特征在于,座封完成后不需要投放压裂球,由于可溶堵头的存在,可直接进行压裂作业。 8.如权利要求7所述的一种单卡瓦全可溶油管封堵桥塞,其特征在于,所述堵头中心体为整体式结构,外套筒与堵头中心体通过螺纹连接,密封圈使堵头密封性更好,外套筒上端设有螺纹段,可以与电缆坐封工具连接,阻隔销钉将外套筒限制固定在堵头中心体上,剪切销钉连接导鞋和可溶堵头,在压裂作业完后,可剪断销钉使可溶堵头掉入井底,可溶堵头与井下液体接触能够全溶解。
法律状态
PENDING
专利类型码
A
国别省市代码
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