Oil-well pump anchor
An oil well pump and oil drain hole technology is applied in the field of oil well pump anchors, which can solve the problems of oil well pump vibration, low anchoring force, and inability to be permanently anchored, and achieves a simple and reliable structure that is convenient and safe to operate, meets the requirements of use, and has a simple and reliable structure. Effect
Pending Publication Date: 2019-08-20
STARSE ENERGY & TECH GROUP
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Problems solved by technology
The oil pipe made of composite material has low strength and low rigidity, and it will vibrate when the oil pump is working, which may easily cause a drop accident
The existing oil well pump anchors suitable for composite material tubing have imperfect functions and have obvious disadvantages: for example, when there is no internal pressure, the anchor claws of the oil well pump anchor will shrink back, and they cannot be permanently anchored. They can only be anchored when there is internal pressure. Righting effect, low anchoring force, etc.
The existing oil well pump anchor cannot meet the above requirements
Method used
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[0023] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0024] Such as figure 1 As shown, the main body of an oil well pump anchor provided by the present invention is a central pipe 10, and there are several pressure transmission holes on the central pipe 10. The pressure transmission holes include automatic grouting, piston setting pressure transmission holes, and oil drain holes. The slip seat 16 is sleeved on the center pipe 10, covers the oil drain hole, and is fixed on the ce...
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The invention provides an oil-well pump anchor which has the following characteristics: internal hydraulic pressurization is carried out for setting, a pipe column is lifted to be unsuspended, a slipseat glides while lifting for unsuspending is carried out, an oil drainage oil is opened, and the pipe column is lifted to drain liquid in the pipe column without mounting an oil drain device; on-siteadjustment of the unsuspending force size is realized through increasing or decreasing an unsuspending dowel; when the oil-well pump anchor goes into a well, a filling sliding sleeve is automaticallyopened through differential pressure to keep internal and external pressure of the pipe column balance so as to realize automatic grouting; the slip seat is provided with a guiding key, and the guiding key ensures that the slip cannot rotate while guiding; the slip has the bidirectional anchoring function and is reliable in anchoring; a locking mechanism is provided and cannot loose and retreat;the slip is of a wedge-shaped structure and is anchored more tightly when being pressed or pulled downwards; the slip is synchronously opened to ensure that setting is in the middle; and a shearing safe joint is provided, during the unsuspending process, and the safe joint breaks once the unsuspending force exceeds the shearing force of the safe joint, so that the pipe column at the upper part ofthe anchor is lifted out, and the lower part of the anchor is fished out through other manners.
Description
technical field [0001] The invention relates to an oil well pump anchor. Background technique [0002] In oil extraction operations, oil production pumps are usually used in steel tubing wells, but composite material tubing has appeared on the spot in recent years. The oil pipe made of composite material has low strength and low rigidity, and it will vibrate when the oil pump is working, which may easily cause a drop accident. The existing oil well pump anchors suitable for composite material tubing have imperfect functions and have obvious disadvantages: for example, when there is no internal pressure, the anchor claws of the oil well pump anchor will shrink back, and they cannot be permanently anchored. They can only be anchored when there is internal pressure. Righting effect, low anchoring force, etc. In addition, considering the operation of taking out the pump in the later stage, it is usually necessary to install an oil drainer on the oil pipe string to realize oil ...
Claims
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IPC IPC(8): E21B23/01F04B47/00F04B53/14F04B53/00
CPCE21B23/01F04B47/00F04B53/14F04B53/00
Inventor 李伯仁马自江陈光利唐少鹏施凯健赵鑫联
Owner STARSE ENERGY & TECH GROUP