CN202417380U - Autorotation oil producing well head device - Google Patents

Abstract

The utility model relates to an autorotation oil producing well head device, comprising a cross joint, a worm gear rotating body, a plane bearing, a steel ball, a rubber sealing ring and a suspender which are arranged sequentially. The cross joint is a carrier of the device; a worm hole is processed on the cross joint; the plane bearing, a steel ball groove and the worm gear rotating body are arranged on the plane bearing of the cross joint; the suspender is arranged in an inner conical hole of the worm gear rotating body; and an oil pipe is arranged on the lower part of an inner hole of the suspender. Without adding external power, the rotation device can be driven to rotate an oil pipe column automatically through an upward stroke and a downward stroke of a polish rod, so that a contact position of a sucker rod string and an oil pipe inner hole is changed in time, an inner wall of the oil pipe is abraded uniformly, the service life of the oil pipe is prolonged greatly, the operation times is reduced, the yield of crude oil is improved, and the oil producing cost is reduced.

Description

Automatically rotate wellhead for production

Technical field

The utility model relates to the used wellhead for production in oil recovery field, oil field, especially rotates wellhead for production.

Background technology

In the oil recovery field, wellhead for production is the visual plant that recovers the oil.Wellhead for production mainly contains concentric wellhead for production and eccentric wellhead for production.Decentralized wellhead mainly is to solve to recover the oil and test problem, and tubing string has certain eccentric throw in the down-hole, thereby realizes annulus logging through the rotation well head.And production wellhead is generally non-rotatable with one heart; If rod string and oil pipe decentraction then cause the wearing and tearing of rod string and oil pipe easily; Because tubing string is non-rotatable, therefore very easily cause the local eccentric wear of oil pipe, the time one is long; Cause oil pipe to lose efficacy easily, thereby directly influence the production of oil well.

The utility model content

In order to overcome the above-mentioned defective of existing concentric wellhead assembly, the utility model provides a kind of rotation wellhead for production, and this rotation wellhead assembly not only can rotate, and has simple in structurely, and bearing capacity is high, the characteristics of long service life, saving cost for oil production.

The utility model solves the technical scheme that its technical problem adopted: rotate wellhead for production automatically and formed by big four, worm gear rotary body, plane bearing, steel ball, rubber seal, the orderly installation of hanger.Big four is the carrier of this device, is processed with worm hole on it, the planar axes bearing; The steel ball groove; The worm gear rotary body just is located on the planar axes bearing of big four, in the female cone hole of worm gear rotary body, hanger is installed, and oil pipe is installed in the endoporus of hanger bottom.Said worm gear rotary body, its cylindrical top machining worm wheel, middle part processing plane bearing support, bottom machined steel ball impression groove, rubber seal groove, rounding platform hole is processed on endoporus top, bottom processing trapezoidal thread.Said hanger; Its external process becomes reverse frustoconic; Copper bar is applied in the shop, middle part; Bottom processing trapezoidal thread, each processing

oil pipe internal thread fuel feed pump of endoporus upper and lower is installed, and 2-φ 12-20 fabrication hole is bored at the top.

The beneficial effect of the utility model is: under the situation that does not increase external power; Can pass through the automatic rotation pipeline post of polished rod up-down stroke driven rotary device, thereby make rod string and the timely conversion contact position of oil pipe endoporus, tube inner wall is worn and torn uniformly; Prolonged the application life of oil pipe greatly; Reduce the operation number of times, improve crude output, reduce cost for oil production.Simultaneously, can on the basis of existing big four, undergo technological transformation, help workload and saving cost that saving technique is transformed.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is the structure principle chart of the utility model.

Fig. 2 is the vertical view of the structure principle chart of the utility model.

In the drawings: 1, big four, 2, the worm gear rotary body, 3, hanger, 4, worm screw, 5, copper bar, 6, plane bearing, 7, steel ball, 8, the shutoff screw, 9, rubber seal, 10, tubing string, 11, worm bearing, 12, click, 13, connecting rod.

The specific embodiment

In Fig. 1, through machining with big four 1, worm gear rotary body 2, hanger 3, worm screw 4 processing is qualified.Big four is as the carrier of this device, and planar axes 6 is equipped with in the hole within it, as the load-bearing and the rotation of tubing string 10, hanger 3, worm gear rotary body 2.For preventing the recoil of tubing string, the steel ball of in rotary body bottom and big four circular groove, packing into, the shutoff screw 8 of screwing on after steel ball 7 is filled at underground oil and gas pressure.Hanger 3 is installed in the endoporus of rotary body 2, and the bottom is processed with trapezoidal thread, is drilled with 2-φ 12-20 fabrication hole at the top of hanger 3, supplies special tool to be inserted in the interior trapezoidal thread with hanger 3 screw-in rotary bodies of fabrication hole, prevents the recoil when down-hole air pressure is too high.On big four 1, load onto worm screw 4 and click 12, worm bearing 11 coincide with the worm gear rotary body, refills connecting rod 13.Polished rod eye on connecting rod 13 and the polished rod with flexible strap link to each other, polished rod eye every toward upstroke once just drivening rod clockwise rotate an angle; Because click 12 devices are arranged; Worm screw 4 only can clockwise rotate, oil pumper continuous operation, just driven rotary wellhead assembly rotation of worm screw 4; Thereby change the relative position of rod string and tube inner wall at any time, reach the uniform wear of rod string and oil pipe.

Claims (3)

1. one kind is rotated wellhead for production automatically; Be to install in order by big four (1), worm gear rotary body (2), plane bearing (6), steel ball (7), rubber seal (9), hanger (3) to form; Its characteristic: big four (1) is the carrier of this device, is processed with worm hole on it, the planar axes bearing; The steel ball groove; Worm gear rotary body (2) just is located on the plane bearing (6) of big four (1), and hanger (3) is installed in the female cone hole of worm gear rotary body (2), and oil pipe (10) is installed in the endoporus of hanger (3) bottom.

2. according to the said a kind of automatic rotation wellhead for production of claim 1; It is characterized in that: said worm gear rotary body (2); Its cylindrical top machining worm wheel, middle part processing plane bearing support, bottom machined steel ball impression groove, rubber seal groove; Rounding platform hole is processed on endoporus top, bottom processing trapezoidal thread.

3. according to the said a kind of automatic rotation wellhead for production of claim 1; It is characterized in that: said hanger (3) external process becomes reverse frustoconic; Copper bar is applied in the shop, middle part; Bottom processing trapezoidal thread; Each processing

oil pipe internal thread of endoporus upper and lower, 2-φ 12-20 fabrication hole is bored at the top.

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