Hydraulic temporary plugging bridge plug
A hydraulic, bridge plug technology, used in wellbore/well components, sealing/packaging, earth-moving drilling, etc., can solve problems such as increasing production, and achieve the effect of easy unsealing, uniform and reliable internal and external sealing, and reliable sealing.
Active Publication Date: 2022-07-29
大庆市亚盛油田技术开发有限公司
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Problems solved by technology
[0003] In order to solve the existing coiled tubing fracturing problems such as changing the wellhead and increasing production, the present invention provides a hydraulic coiled tubing temporary plugging bridge. The invention has simple structure, convenient operation, high plugging success rate, reliable setting and unsealing Simple and easy to salvage
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[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0029] like figure 1 , 6 , 7, the present invention is divided into a bridge plug body, a bridge plug delivery tool, and a bridge plug recovery tool from the large module.
[0030] A more specific bridge plug body includes a salvage assembly, a center assembly, a seal assembly, and an anchor assembly. The specific structure and function of each component and each tool are detailed below.
[0031] like Figure 9As shown, the upper balance pipe 13 and the lower balance pipe 25 of the central assembly are threadedly connected to form the whole located in the u...
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The invention discloses a hydraulic temporary plugging bridge plug, relates to the technical field of oil field downhole tools, and is used for temporary interlayer sealing, water plugging and testing, and is matched with a packer to be used in measures such as acid fracturing. Comprising a setting assembly, a recycling assembly, a fishing assembly, a center assembly, a sealing assembly and an anchoring assembly. The setting assembly is connected with the fishing assembly in a threaded mode, the upper portion of the setting assembly is connected with the whole set of pipe column in a pipe threaded mode, and the recycling assembly is used for capturing along with the pipe column after a recycling equipment tool of the whole set of tool completes a task and capturing the recycling tool, and the fishing tool assembly is arranged on the outer side of the center assembly in a sleeving mode with the center assembly as the axis. The center assembly is a whole tool for bearing acting force brought by all directions, the sealing assembly is a sealing item of the whole tool, a pipe column is sealed through compression and expansion of a rubber sleeve, and the packer is simple in structure, convenient to operate, high in sealing success rate, reliable in setting, simple in unsealing, easy to salvage and capable of conducting inverse well flushing.
Description
technical field [0001] The invention belongs to the field of downhole tools in oilfields, and in particular relates to a hydraulic type temporary plugging bridge plug of a coiled tubing. Background technique [0002] Temporary plugging at the bottom of coiled tubing high-pressure wells in oilfields is a very important plugging operation. Poor plugging can cause serious blowouts. After conventional coiled tubing fracturing operations, the wellhead needs to be left for 3-7 days. When the pressure is weakened When the wellhead is replaced for routine operations, the cost and production cost during this period also increase proportionally with time, and the weakening of the pressure also reduces the production output in the later stage. Therefore, this invention solves the above problems. SUMMARY OF THE INVENTION [0003] In order to solve the problems of replacing wellheads and increasing production in the existing coiled tubing fracturing, the present invention provides a hy...
Claims
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IPC IPC(8): E21B33/134E21B23/10E21B23/01E21B31/12
CPCE21B33/134E21B23/10E21B23/01E21B31/12
Inventor 李鑫杨帆
Owner 大庆市亚盛油田技术开发有限公司