Eccentric wear prevention wellhead device for oil extraction in oil field
Technical Field
The utility model relates to an oil field oil recovery technical field especially relates to an oil field oil recovery eccentric wear prevention well head device.
Background
Oil recovery engineering is a general term for various engineering technical measures taken on an oil reservoir through a production well and an injection well according to development targets in the oil field exploitation process. The wellhead assembly is an oil well production hub and is the ground part of the whole oil well. Whether the device is a self-blowing wellhead device or an oil pumping well device, the main functions of the devices are to hang a tubing string and bear the weight of the whole tubing string in a well; the annular space of the oil pipe and the sleeve is sealed, the smooth operation of various underground operation constructions is ensured, and the production, the data recording, the daily management and the like are controlled and adjusted. The relationship between good performance and bad performance of the wellhead device to the oil well is great. The well head in oil field takes place the eccentric wear easily in long-time use, and the leading reason lies in: 1. the well mouth is displaced greatly in the transverse direction, and 2, the well mouth swings at a small angle, so that the well mouth inclines slightly; most of the existing oil field well heads do not have a deviation rectifying structure, and an oil field oil extraction eccentric wear prevention well head device is provided for people.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that the well head does not have the structure of rectifying among the prior art, and the oil field oil recovery eccentric wear well head device that provides.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
An oil field oil extraction eccentric wear prevention wellhead device comprises a wellhead and a bottom ring plate sleeved on the wellhead, wherein a plurality of fixing mechanisms for being relatively fixed with the ground are arranged on the bottom ring plate;
At least two connecting plates which are horizontally arranged are fixed on the periphery of the wellhead, which is positioned on the upper part of the bottom ring plate, at intervals, sliding holes are formed in the connecting plates, sliding rods which correspond to the sliding holes and are vertically arranged are fixed on the inner side circumference of the upper part of the bottom ring plate, the size of an inner hole of each sliding hole is larger than the size of the periphery of each sliding rod, the upper end of each sliding rod penetrates through the corresponding sliding hole to extend upwards, and an annular space which can realize the radial movement of the sliding hole relative to the corresponding sliding rod is formed between the upper;
The outer circumference of the upper part of the bottom ring plate is hinged with a plurality of rotating rods corresponding to the connecting plates, and the other ends of the rotating rods are connected with the corresponding connecting plates through adjusting mechanisms; the adjusting mechanism comprises a sliding chute which is transversely arranged at the lower part of the connecting plate, bearings are arranged at two sides of the sliding chute, a sliding block which can transversely move is arranged in the middle of the sliding chute in a limiting and matching mode, and the bottom of the sliding block is hinged with the other end of the rotating rod; the sliding groove is provided with a threaded rod which is transversely arranged, the middle of the threaded rod penetrates through the sliding block, the sliding block and the sliding block form threaded fit, the two sides of the threaded rod are supported through bearings respectively, and the outer end of the threaded rod extends out of the sliding groove to be fixed with a rotating handle.
Preferably, the fixing mechanism comprises a mounting hole formed in the bottom ring plate, a ground pile is inserted into the mounting hole, and one end of the ground pile penetrates through the mounting hole and is fixed in the ground.
Preferably, a plurality of hook teeth which are obliquely arranged upwards are fixed on the ground pile.
The connecting plates are four and are evenly distributed, and arc-shaped connecting rods are fixed between every two adjacent connecting plates.
The outside of the rotating handle 75 is provided with anti-skid grains.
The utility model provides a pair of oil field oil recovery eccentric wear prevention well head device, beneficial effect lies in: the eccentric wear prevention wellhead device can limit the wellhead by the sliding rod penetrating through the sliding hole, and can fix the bottom ring plate by the fixing mechanism, so that the wellhead is prevented from being greatly deviated; when the well head takes place the eccentric wear because of a small amount of slopes, only need rotate the commentaries on classics handle on the connecting plate of mutual disposition, rotate and change the handle and just can drive the slider and remove, just can drive the bull stick and rotate, the bull stick rotates just can finely tune the angle of well head to this just can carry out the small-angle to the well head and rectify.
Drawings
Fig. 1 is the utility model provides an oil field oil recovery eccentric wear well head device's schematic structure diagram.
Fig. 2 is the utility model provides an oil field oil recovery eccentric wear well head device's overlook schematic structure diagram.
Fig. 3 is the utility model provides an oil field oil recovery eccentric wear well head device's adjustment mechanism schematic structure.
In the figure: well head 1, bottom ring board 2, mounting hole 3, ground stake 4, slide bar 5, connecting plate 6, adjustment mechanism 7, spout 71, slider 72, threaded rod 73, bearing 74, commentaries on classics handle 75, bull stick 8, slide opening 9, connecting rod 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
Referring to fig. 1-3, an oil field oil extraction eccentric wear prevention wellhead device comprises a bottom ring plate 2, wherein the bottom ring plate 2 is sleeved on a wellhead 1, connecting plates 6 are fixed on the periphery above the wellhead 1, connecting rods 10 are fixed between every two adjacent connecting plates 6, and a plurality of fixing mechanisms are arranged on the bottom ring plate 2; a sliding hole 9 is formed in the connecting plate 6, sliding rods 5 are fixed on the periphery above the bottom ring plate 2, one end of each sliding rod 5 penetrates through the corresponding sliding hole 9 and extends upwards, the cross sections of the sliding rods 5 and the sliding holes 9 are circular, the outer diameter of each sliding rod 5 is smaller than that of the corresponding sliding hole 9, and a gap between the sliding rods 5 and the sliding holes 9 is convenient for fine adjustment of the relative position between the sliding rods; all the places all around 2 tops of bottom ring board are rotated and are connected (articulated) have bull stick 8, 8 one end of bull stick is connected with adjustment mechanism 7, adjustment mechanism 7 includes spout 71, spout 71 is seted up in connecting plate 6 below, it is provided with slider 72 to slide in spout 71 (slider 72 is spacing to be installed in spout 71, can only the horizontal slip, can not rotate), and 8 one end of bull stick is rotated and is connected (articulated) on slider 72, spout 71 both sides wall all is fixed with bearing 74, one of them bearing 74 in-connection has threaded rod 73, threaded rod 73 one end is passed slider 72 (for screw-thread fit between the two) and another bearing 74 and is fixed with the twist grip 75, twist grip 75 is opened outward and is equipped with anti-skidding line.
This device passes slide opening 9 through slide bar 5 and can carry out spacingly to well head 1, guarantees that well head 1 does not take place big skew. When the slight deviation of well head 1 leads to the eccentric wear, for example the eccentric wear takes place in the left and right direction in the picture, only need rotate the handle 75 that changes on two connecting plates 6 of left and right sides, because slider 72 is spacing to be installed in spout 71, can only the horizontal slip, can not rotate, and be screw-thread fit between threaded rod 73 and the slider 72, consequently rotate handle 75 and just can drive slider 72 and remove (two sliders 72 of left and right sides move the same direction, simultaneously left or right side), just can drive bull stick 8 and carry out anticlockwise or clockwise rotation, bull stick 8 rotates just can carry out micro-adjustment to the angle of well head 1 (because there is certain clearance between slide bar 5 and the slide opening 9 and is the annular space, consequently well head 1 can take place a small amount of deflection on vertical direction this moment), just can carry out the small-angle to well head 1 and rectify.
Example 2
Referring to fig. 1, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the fixing mechanism includes a mounting hole 3 provided on the bottom ring plate 2, a ground pile 4 is inserted into the mounting hole 3, a plurality of hook teeth are fixed on the ground pile 4, one end of the ground pile 4 passes through the mounting hole 3 and is fixed in the ground, the bottom ring plate 2 can be fixed on the ground through the fixing mechanism, and the ground pile 4 can be fixed on the ground more stably through the hook teeth.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.