Separated type rotary oil draining device
A separate and oil-draining technology, which is applied to wellbore/well valve devices, wellbore/well parts, earthwork drilling and production, etc., which can solve the problems of size limitation, inability to arrange friction devices, and inability to use rotary drainers, etc. , to achieve the effect of meeting the size requirements and large available space
Inactive Publication Date: 2012-07-04
刘庆敏
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Problems solved by technology
[0003] In order to solve the above-mentioned problem that the friction device cannot be arranged and the rotary drainer cannot be used due to the size limitation, the present invention provides a separate rotary oil drain device, which can realize the casing with small inner diameter without the limitation of the size between the casing and the oil pipe. The purpose of oil drainage can be realized by rotating when lowering into the oil pipe with large outer diameter
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[0017] exist figure 1 Among them, the oil drain device includes two parts, the oil drain assembly 3 and the friction assembly 5, the oil drain assembly 3 and the friction assembly 5 are independent and installed separately, and the oil drain assembly 3 is installed through one or several oil pipes 1 On the upper part of the oil well pump 4 , the friction assembly 5 is installed on the lower part of the oil well pump 4 through one or several oil pipes 1 . The friction assembly 5 adopts the existing mature friction or anchoring device structure. In the working state, when the oil pipe 1 on the upper part of the oil drain assembly rotates clockwise, the friction assembly 5 can be locked on the casing 2 and does not rotate. And make the oil pipe 1 connected with it stand still relative to the sleeve pipe 2.
[0018] figure 2 and image 3 It is an embodiment of the oil drain assembly 3 in the oil drain device, which includes an upper joint 6, an oil drain sleeve 7, and an oil d...
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The invention discloses a separated type rotary oil draining device. The separated type rotary oil draining device comprises an oil draining assembly and a friction assembly, wherein the oil draining assembly and the friction assembly are mutually independent and are independently installed, the oil draining assembly is directly or indirectly arranged at the upper part of an oil-well pump or arranged at the upper part of a fixed valve, the friction assembly is directly or indirectly arranged at the lower part of the oil-well pump or arranged at the lower part of an oil inlet hole of the oil-well pump, the inner diameter of the friction assembly is smaller than that of an oil pipe, the size of the friction assembly cannot be limited by the oil pipe and a sleeve pipe any more, and the size requirement can be fully satisfied. According to the separated type rotary oil draining device disclosed by the invention, the limitation for the installation and the use of the rotary oil draining device due to the sizes of the sleeve pipe and the oil pipe is removed, and the purpose that the rotary oil draining device can be installed and used under optional sizes of the sleeve pipe and the oil pipe is realized.
Description
technical field [0001] The invention relates to an oil drainage device used on an oil well, in particular to a rotary oil drainage device. Background technique [0002] When lifting the oil pipe in the oil well operation, it is necessary to release the well fluid in the oil pipe into the oil well through the drainer installed on the pipe string in advance, so as to reduce the environmental pollution to the ground and reduce the labor intensity of the workers. The rotary oil drainer has been widely used because of its large inner cavity, which does not affect the normal production of oil wells, works reliably, and has a wide range of applications. At present, there are many forms of rotary oil drainers used on oil wells, but they are all integrated, that is, the oil drain mechanism and the friction mechanism are assembled into one, such as Chinese patents 201020607104.6, CN201110318654.5, etc., through the friction device and casing Due to friction, the rotating oil pipe dir...
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IPC IPC(8): E21B34/12
Inventor 舒华文马增海邓宝宁张清松张新华刘庆敏马波
Owner 刘庆敏