The utility model discloses an integrated pipe string for negative pressure induced blowout and commissioning of gas wells, which comprises an oil pipe, a packer, a percussive perforating device, a sieve pipe and a wire plug, wherein the packer is arranged at the lower part of the oil pipe, the percussive perforating device is arranged at the lower part of the packer, the sieve pipe is arranged at the bottom of the percussive perforating device and the wire plug is arranged. At the bottom of the tubing, there is a tailpipe between the plug and the screen tube. The impact type perforation device is composed of an upper joint, a stop sleeve, a sealing piece and a lower joint, wherein the upper joint and the lower joint are screwed together, and a sealing ring is arranged at the connection of the upper joint and the lower joint, the stop sleeve is arranged in the inner cavity of the upper joint, the sealing piece is arranged at the lower part of the stop sleeve, and the connection of the outer wall of the seal piece and the lower joint is also provided. The sealing ring is sealed with ceramic parts. Beneficial effect: it can ensure that the broken pieces of the closed parts meet the standards and ensure the success rate of construction. The utility model has the advantages of convenient operation, simple structure, easy manufacture, and economical and feasible technology.
【技术实现步骤摘要】
一种用于气井负压诱喷投产一体化管柱
本技术涉及一种一体化管柱,特别涉及一种用于气井负压诱喷投产一体化管柱。
技术介绍
目前,随着低渗、特低渗透气藏的不断开发,大部分气井通过压裂改造才能获得气流,目前现场传统做法就是下入采气管柱后再借助抽汲、气举等外力诱喷手段进行放喷排液、投产,使用时存在以下缺点:(1)采用液氮气举工艺,泵注压力高,易把井筒液体挤入地层,对地层损害较大,而且长期使用作业成本高;(2)采用抽汲诱喷工艺,存在抽汲工作效率较低,防喷效果差,存在气顶或井涌现象,易引发井控事故,无法满足气田安全、清洁、高效开发要求。
技术实现思路
本技术的目的是为了解决气井现有的采气管柱在使用过程中存在的诸多问题而提供的一种用于气井负压诱喷投产一体化管柱。本技术提供的用于气井负压诱喷投产一体化管柱包括有油管、封隔器、撞击式开孔装置、筛管和丝堵,其中封隔器套设在油管的下部,撞击式开孔装置装配在封隔器的下部,筛管设在撞击式开孔装置的底部,丝堵设在油管的底部,丝堵和筛管之间设有尾管。撞击式开孔装置是由上接头、止退套、密闭件和下接头组成,其中上接头和下接头相螺接,上接头和下接头的连接处设有密封圈,止退套设在上接头的内腔中,密闭件设在止退套的下部,密闭件外侧壁与下接头的连接处也设有密封圈,密闭件为陶瓷件。本技术的工作原理:首先将投产管柱按设计要求下至预定位置后,然后坐封封隔器,安装采气井口和地面流程后,从测试闸门投入铁棒后关闭井口,靠自由落体撞碎密闭件实现开孔,地层油气在负压的作用下,诱喷至地面进入流程,从而实现一趟管柱负压诱喷投产一体化作业。本技术的有益效果:本技术提供的一体化 ...
【技术保护点】
1.一种用于气井负压诱喷投产一体化管柱,其特征在于:包括有油管、封隔器、撞击式开孔装置、筛管和丝堵,其中封隔器套设在油管的下部,撞击式开孔装置装配在封隔器的下部,筛管设在撞击式开孔装置的底部,丝堵设在油管的底部,丝堵和筛管之间设有尾管。
【技术特征摘要】
1.一种用于气井负压诱喷投产一体化管柱,其特征在于:包括有油管、封隔器、撞击式开孔装置、筛管和丝堵,其中封隔器套设在油管的下部,撞击式开孔装置装配在封隔器的下部,筛管设在撞击式开孔装置的底部,丝堵设在油管的底部,丝堵和筛管之间设有尾管。2.根据权利要求1所述的一种用于气井负压诱喷投产一体化管柱,其特征在于:所述的撞击式开孔装置是由上接头、止退套、密闭件和下接头...
【专利技术属性】
技术研发人员:周小林,张冲,夏富国,吉树鹏,巢贵业,宋宪实,彦士清,李玉贤,
申请(专利权)人:中国石油化工股份有限公司,
类型:新型
国别省市:北京,11
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。