-
公开(公告)号：US20210277771A1
公开(公告)日：2021-09-09
申请号：US16346963
申请日：2018-05-04
IPC分类号： E21B47/095 , E21B47/107
摘要： Distributed Acoustic Sensing systems may be employed for monitoring wellbore events occurring within the interior of a tubular conveyance such as a coiled tubing strand. A signal cable carried by the coiled tubing strand may provide a measure of acoustic energy as a function of position in the wellbore such that a location of a ball dropped through the coiled tubing strand may be monitored in real time. The signal cable can be used to determine whether the ball encounters an obstruction within the coiled tubing strand, and/or can confirm that the ball has properly seated on a downhole tool actuated by engagement with the ball. In other embodiments, the location and density of a liquid sand flow or other fluid mixture can be monitored, and/or the location of a leak through a lateral wall of the coiled tubing strand can be detected.
-
公开(公告)号：US11920435B2
公开(公告)日：2024-03-05
申请号：US16639299
申请日：2019-05-24
CPC分类号： E21B34/14 , E21B34/10 , F16K1/20 , F16K31/46 , E21B2200/05
摘要： A sub-surface safety valve having a positional flapper, a valve seat, and a remotely actionable opening prong. The opening prong comprising at least one of a debris wiper, filter, and at least one flow hole. The wiper, filter, and at least one flow hole function according to either position or movement of the flapper and opening prong and prevent debris buildup around the valve seat. The wiper is an extendible material in communication with the valve seat and a surface of the opening prong and it extends radially in response to closing the valve. The extension of the wiper in response to closing the flapper cause the wiper to scrape the surface of the valve seat. The filter can comprise a screen integrated with or attached to the opening prong. The flow holes can be in the form of angled flow holes or elongated slots.
-
公开(公告)号：US11203917B2
公开(公告)日：2021-12-21
申请号：US16774703
申请日：2020-01-28
摘要： A subsurface safety valve for controlling fluid flow in a well conduit incorporating a pressure equalizing feature. The safety valve includes a body member having a longitudinal bore, a valve actuator having axial movement within the longitudinal bore and a valve that restricts flow through the longitudinal bore. An equalization fluid flow passageway provides a fluid path between the longitudinal bore above the valve and the longitudinal bore below the valve. An equalizing device is located within the equalization fluid flow passageway and configured to resist sand and debris effects on its operation, the equalizing device regulating flow through the equalization fluid flow passageway and operated by the valve actuator prior to opening the valve.
-
公开(公告)号：US20200256159A1
公开(公告)日：2020-08-13
申请号：US16774703
申请日：2020-01-28
摘要： A subsurface safety valve for controlling fluid flow in a well conduit incorporating a pressure equalizing feature. The safety valve includes a body member having a longitudinal bore, a valve actuator having axial movement within the longitudinal bore and a valve that restricts flow through the longitudinal bore. An equalization fluid flow passageway provides a fluid path between the longitudinal bore above the valve and the longitudinal bore below the valve. An equalizing device is located within the equalization fluid flow passageway and configured to resist sand and debris effects on its operation, the equalizing device regulating flow through the equalization fluid flow passageway and operated by the valve actuator prior to opening the valve.
-
公开(公告)号：US20190326735A1
公开(公告)日：2019-10-24
申请号：US16311646
申请日：2016-07-01
摘要： Methods for installing a signal cable through a coiled tubing strand include installing a front end bullet at a leading end of the signal cable and dissolvable bullets at intermediate locations along the signal cable. A pushing fluid is injected into the coiled tubing strand to apply a drive force to both the front end bullet and the dissolvable bullets to thereby advance the signal cable through the coiled tubing strand. Once the front end bullet passes through the coiled tubing strand, the front end bullet may be removed, and a solvent fluid is injected to remove the dissolvable bullets inside coiled tubing strand. The dissolvable bullets permit the pushing fluid to greater drag forces to advance the signal cable, while reducing the friction generated between the signal cable and an inner wall of the coiled tubing strand that usually act in a direction opposite the drag forces.
-
-
-
-
搜索结果
5 条记录 (耗时 0.016 秒)
