CN2725506Y - New oil pipe hanger back tongs device - Google Patents

Abstract

The utility model relates to a tool to hang an oil pipe in oil production in an oil field, and an oil pipe back tongs device comprises a machine base, a slips clamping mechanism, an operation transmission mechanism and an atmospheric pressure cylinder. An oil pipe hanger device which is matched with the oil pipe back tongs device is composed of a hanger body, a moving oil pipe seat, a fixing oil pipe seat and a pin shaft magnet gasket. The oil pipe back tongs device clamps the oil pipe, which restricts the freely falling body motion of the oil pipe and the circumferential direction rotation of the oil pipe, and the oil pipe hanger device mainly hangs the oil pipe. The organic unity of the oil pipe back tongs device and the oil pipe hanger device forms a set of perfect operation modes for high efficiency, safety, convenience and labor saving, the mechanized degree of the operation is improved, and in addition, workmen's labour intensity is reduced.

Description

Oil pipe elevator back-up tong device

The utility model relates to the instrument of the lifting oil pipe in a kind of oil field operation.

At present, the elevator instrument of lifting oil pipe still follows old-fashioned pipe elevator for many years in the known oil field operation, in operation process, during from the down-hole flowline, need two cover pipe elevators, use in turn, promptly a pipe elevator can only be complementary with an oil pipe.For example when removing the oil pipe operation, earlier first pipe elevator is clamped on the box cupling bottom of first oil pipe, with suspension ring elevator is hung on the suspension hook then, hang out the 1st oil pipe, when well head is exposed in second tubing coupling, second pipe elevator is stuck in below the box cupling again, unscrew first oil pipe with hydraulic pipe wrench and back-up tong then, after the disengagement, just first oil pipe hung onto on the oil tube bracket together with elevator, at this moment, suspension hook continues second oil pipe of lifting, when second oil pipe hangs out well head and expose another tubing coupling, two workmans just are stuck in the elevator that unloads from first oil pipe below the box cupling again, at this moment, unscrew second oil pipe with hydraulic pipe wrench and back-up tong again, again second oil pipe hung onto on the oil tube bracket together with second pipe elevator, below analogize, reciprocation cycle, two 70 kilograms pipe elevator is then hurried back and forth between oil tube bracket and well head back and forth by two operation workmans, and its labour intensity is quite big.In case after the workman was tired out, speed just descended, thereby operating speed is also descended thereupon.Therefore, oil field oil recovery workover treatment at present is in the semi-mechanization situation always.

In order to overcome existing pipe elevator defective, the utility model provides a kind of oil pipe elevator back-up tong device, and this device can only can make things convenient for, promptly lift by crane oil pipe with an elevator, and operating speed is multiplied, mechanization degree greatly improves, and labor strength greatly reduces.

The utility model solves the technical scheme that its technical problem adopts: on production wellhead, be that oil pipe back-up tong device is installed, this device is made up of four parts: first is the frame housing, its lower flange links to each other with well head, in order to fixing back-up tong device, upper flange is handled slips mechanism in order to install, and on the right side of frame housing the air pressure oil cylinder is installed, endoporus in holster shell is processed into up big and down small rounding taper hole, and processes vertical vertical slot on each direction of 120 ° in hole.Second portion is the slips clamping body, and it is hinged by I, II, three secter pats of III, and I and II are hinged, and II and III are hinged, and I and III are not hinged, are the open loop form, and they can crowd around circular, also can be extended into the plane.In the inboard of I, II, three secter pats of III, respectively inlay arc block teeth that have sufficient intensity and hardness through Overheating Treatment, respectively process a vertical boss in the outside of secter pat.When needs chucking oil pipe, can drive transmission mechanism by the air pressure oil cylinder three slip spiders are put into frame housing female cone hole, at this moment, three slips are under the deadweight effect, and the interior age of a draught animal contacts with oil pipe, the outside contacts with conical bore, jointly under the deadweight effect, slips just tightens oil pipe tightly, again because outer rim has the cannelure on vertical boss and the frame endoporus to match at oil pipe and slips, when hydraulic pipe wrench is unscrewed or tightened oil pipe, also be unlikely to make the oil pipe transfer.Third part is for handling transmission mechanism, the piston rod of hydraulic jack is connected with screw thread with yoke, yoke is connected with rocking arm by connecting rod, the bottom is that bearing pin connects, the upper end rocker arm shaft is for being rigidly connected; an end and the rocker arm shaft of rocking arm are rigidly connected, and the other end is connected with three-jaw assembly bearing pin, and three slips are connected with bearing pin with assembly.When hydraulic cylinder piston rod shrank, piston rod just drove transmission mechanism the three-jaw assembly is proposed in frame circular cone endoporus, and oil pipe is loosened; When hydraulic cylinder piston rod stretches out, just three-jaw is tightened assembly and put into conical bore, oil pipe is tightened.The 4th part is air pressure oil cylinder (hydraulic jack also can), and its fixed end is fixed on the frame, piston end with handle driving member and be connected, it mainly provides power in system, handle clamping body.What match with above-mentioned machinery is exactly pipe elevator in addition, this pipe elevator is not the elevator of traditional form, but a kind of novel elevator, have U type opening at the middle part of elevator, a fixing crescent oil pipe seat is set, the selenodont oil pipe seat of an activity is set at its top, it can be around fixedly crescent oil pipe seat rotation, a lifting handle is installed at back at it, can do 120 ° rotation to movable oil pipe seat, during the lifting oil pipe, earlier elevator is inserted on the oil pipe, 120 ° of movable oil pipe seat rotations, movable oil pipe toilet is encircled oil pipe, is closed then.For the ease of lifting, be processed with two suspension ring holes in the both sides of elevator, prevent slippage, after being inserted in, insert with two pins immediately by suspension ring, and be similarly and prevent that pin from coming off, a magnet packing ring is set between pin and elevator body.

The beneficial effects of the utility model are conspicuous, and it can only can carry out the oil pipe rountrip with a pipe elevator, convenient, fast, safe, laborsaving, high efficiency, low cost.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is: oil pipe back-up tong device

Fig. 2 is: the gripping mechanism expanded view

Fig. 3 is: the pipe elevator front view

Fig. 4 is: the pipe elevator vertical view

Among the figure: 1, air pressure oil cylinder 2, frame housing 3, slip spider 4, slips 5, screw 6, slip spider arm 7, three-jaw assembly seat 8, rocking arm and axle 9, connecting rod 10, yoke 11, handle pin 12, magnet packing ring 13, elevator body 14, lifting handle 15, fixedly oil pipe crescent moon seat 16, movable oil pipe seat

The specific embodiment:

In Fig. 1, hydraulic jack (1) is fixed on the frame housing (2), oil cylinder piston bar and yoke (10) are by being threaded, the lower end of connecting rod (9) and yoke (10) are hinged, the upper end is rigidly connected with rocker arm shaft (8), rocking arm one end also is rigidly connected with axle, the other end and three-jaw assembly seat (7) are hinged, and three slips (3) are the open loop form with hinged mutual series connection.When hydraulic cylinder works, can make the clamping body chucking or loosen by handling transmission mechanism.

In Fig. 2, be that three slip spiders (3) are proposed from the frame conical bore, the situation in hinge axis is rotated in same plane with slips I and III.If put it in the conical bore, three slip spiders are subjected to the restriction of conical bore, just rotate around hinge axis to form annulus, and oil pipe is encircled until automatic chucking, and this action situation can become the plane as the wing of birds during stretching, extension, and is just circular during gathering.Because the support endoporus is up big and down small inverted cone, therefore, downward more, diameter is more little, more oil pipe can be tightened, again since the frame endoporus also be processed with the boss that is mutually 120 ° of three cannelures and the three-jaw deck back side and match, oil pipe unscrew or rundown process in, also can keep not transfer of oil pipe, thereby play the effect of oil pipe back-up tong.

In Fig. 3, Fig. 4, the middle part of elevator body (13) is processed with fixedly oil pipe crescent moon seat (15) and movable oil pipe crescent moon seat (16), for the ease of manipulation to movable oil pipe crescent moon seat, one lifting handle (14) is housed at its back side, as movable crescent moon seat is rotated counterclockwise, when rotation 120 ° the time, movable crescent moon just forms the annulus of a sealing with fixing crescent moon, just oil pipe is comprised wherein.In addition, also be processed with two suspension ring holes,, respectively boring a vertical hole near the outside, plug handle pin (12) and just can be protected suspension ring for preventing suspension ring slippage in lifting oil pipe process in the both sides of pipe elevator.Equally, get loose for preventing the handle pin, a magnet packing ring (12) is set between elevator body (13) and handle pin, under magnetic action, the handle pin just is adsorbed on the elevator body tightly.

Claims (1)

1. A kind of oil pipe elevator back-up tong device, comprise: support, manipulation transmission mechanism, clamping body, hydraulic jack executing agency and elevator body, movable oil pipe seat mechanism, handle pin insurance institution, it is characterized in that described support is arranged on the production wellhead big four, lower flange is connected with wellhead flange, in order to fixing back-up tong device, upper flange is installed the three-jaw assembly seat of clamping body, and frame one side is installed hydraulic jack, and the endoporus of frame is a big young rounding taper hole down suitable for reading; Described manipulation transmission mechanism, form by yoke, connecting rod, rocker arm shaft and rocking arm, three-jaw assembly base member, wherein yoke and hydraulic cylinder piston rod are with being threaded, the connecting rod lower end is connected with bearing pin with yoke, small end and rocker arm shaft are rigidly connected; rocking arm one end and rocker arm shaft are rigidly connected, and the other end is connected with three-jaw assembly seat pin axle; Described clamping body is by three fan-shaped slip spiders, slips is formed, wherein the inboard of fan-shaped slip spider is processed with slip spider, the outside is processed with vertical boss, slips just is installed on the inboard slip spider, and use screw-driving, and three slip spiders connect with bearing pin mutually, and the I seat links to each other with the II seat, the III seat links to each other with the II seat, be not connected with III number for I number, be the open loop form, during the chucking oil pipe, three slip spiders are put into body rounding taper hole, inboard slips contacts with oil pipe, and longitudinal fluting matches on outer rim boss and the frame inverted cone, under action of gravity, slips just can tighten oil pipe, and keeps circumferentially not transfer; Described hydraulic jack executing agency, its fixed end is mounted on the support, and piston rod links to each other with bearing pin with yoke, and the turnover oil pipe of hydraulic jack is connected with the hydraulic power source of the hydraulic motor of well head output; Described elevator body is processed with U type opening and crescent activity oil pipe seat therebetween, in its processing suspension ring hole, both sides, and the handle pin-and-hole, a magnet packing ring is set between handle pin and elevator body.