Piston take-out device for hydraulic anchor of RTTS packer and application method
A take-out device and RTTS technology, applied in hand-held tools, manufacturing tools, etc., can solve the problems that affect the maintenance efficiency of RTTS packers, the sticking of the piston and the hydraulic anchor body, and the difficulty of piston rotation, so as to save production and maintenance Time and cost, simple structure, and the effect of reducing labor intensity
Active Publication Date: 2018-08-28
CNPC BOHAI DRILLING ENG +1
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Problems solved by technology
This method of removal has the following problems: ①The removal process takes a long time, and most of the time in the entire maintenance process is spent on removing the piston, and the maintenance efficiency is low; ②The labor intensity of the workers is high
Especially after the killing fluid dries up, or the tool works for a long time under high-temperature conditions downhole, the piston and the hydraulic anchor body are stuck together, making it difficult to rotate the piston.
[0004] The method of removing the piston for daily maintenance has seriously affected the maintenance efficiency of the RTTS packer. It is urgent to develop a hydraulic anchor piston removal device for the RTTS packer that is easy to use, low in labor intensity and high in maintenance efficiency.
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[0036] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0037] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...
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The invention provides a piston take-out device for a hydraulic anchor of an RTTS packer and an application method. The device comprises a locking mechanism, a connecting part, a round bar and a punchhammer, wherein the connecting part is provided with two parallel surfaces, one of which is provided with a T-shaped groove and is slidably connected to the locking mechanism through the T-shaped groove, and the other surface of which is provided with the round bar vertically and fixedly, the round bar penetrates through the punch hammer, and can reciprocate in the punch hammer; the locking mechanism comprises two locking blocks connected through a bolt, one ends of the locking blocks are inserted into small holes of the piston while the other ends of the locking blocks are slidably connectedto the connecting part; the locking blocks are provided with positioning through holes in the sliding directions; inner threads are arranged in the positioning through holes; and bolts penetrate through the positioning through holes; and the distance between the two locking blocks is adjusted through the threads. The piston take-out device provided by the invention is simple in structure and convenient to use, the labor intensity is reduced effectively, and the maintenance efficiency of the RTTS packer is improved.
Description
technical field [0001] The invention belongs to the technical field of tooling equipment for petroleum and natural gas, and in particular relates to a device for taking out a hydraulic anchor piston of an RTTS packer and a method for using it. Background technique [0002] The RTTS packer is mainly used in oil layer stimulation and oil testing construction in oilfield exploration and development. It has the advantages of simple operation, high construction success rate, and good economic and social benefits. Especially in oil and gas well test construction, it has become an essential construction tool for sealing formations and measuring formation parameters. After the construction of the tool is completed, the hydraulic anchor part needs to be maintained, the hydraulic anchor piston is cleaned, the "O" ring is replaced, and it is ready to go into the well again. [0003] In the routine maintenance process, the two small holes of the hydraulic anchor piston are generally cl...
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IPC IPC(8): B25B27/02
CPCB25B27/02
Inventor 雷鹏任永宏杨先辉刘述忍陈海波李一娜吴秋来宋浩刘劲松
Owner CNPC BOHAI DRILLING ENG