CN108590548A - A kind of SDHL types big load drill pipe slip - Google Patents

Abstract

The invention discloses a SDHL type heavy-duty drill pipe slip, which comprises a slip body, a slip groove on the slip body, a slip blade and a support ring arranged on the blade groove, and the slip blade passes through the blade groove It is fixedly installed on the slip body, and there are two supporting rings, which are respectively fixedly installed in the middle and bottom of the slip tooth plate. The advantages of the present invention are: the two supporting rings support the slip tooth plate, which can disperse the stress on the slip tooth plate and increase the load that the slip can bear. The maximum load that the slip can bear reaches 750 US tons. It is suitable for the deepest drilling operation in the world at present; the SDHL drill pipe slips are compact in structure, small and flexible, and easy to use; the back of the slip body is tapered and hollowed out. When the drill pipe slips hold the drill pipe, they are hugged by the slip tooth plate The back of the drill pipe and the slips are in taper contact with the inner cone of the inner lining of the turntable. When the drill pipe is subjected to the downward force of the drill pipe's own weight, the taper contact forces the slip die to tightly hug the drill pipe without slipping.

Description

A SDHL type heavy load drill pipe slip

technical field

The invention relates to the field of oil drilling equipment, in particular to an SDHL type large-load drill pipe slip.

Background technique

At present, with the development of new technologies in global oil drilling operations, the drilling depth continues to increase. In this context, it is necessary to use drill pipe slips suitable for ultra-deep wells in order to increase the drilling depth.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides a SDHL type heavy-load drill pipe slip, which can be used in ultra-deep well operations.

The technical scheme adopted in the present invention is:

A SDHL-type heavy-duty drill pipe slip, including a slip body, the slip body has a tooth plate groove, and the slip tooth plate and a support ring are installed on the tooth plate groove, and the slip tooth plate passes through the tooth plate. The plate groove is fixedly installed on the slip body, and there are two supporting rings, which are respectively fixedly installed at the middle and bottom of the slip tooth plate.

Further, the slip body includes left slips, middle slips and right slips, and the left slips, middle slips and right slips are connected together by connecting pins.

Further, the slip body is provided with a tooth plate retaining ring, which is fixedly installed on the slip body through retaining ring screws.

Further, a slip handle is installed on the slip body, and the slip handle includes a left handle, a right handle and a middle handle, the head of the slip body is provided with a handle pin hole, and the left hand The handle, the right hand handle and the middle handle are respectively connected with the left slips, the right slips and the middle slips through the handle pins.

Further, the back of the slip body is tapered and hollowed out.

Further, cotter pins are installed on the connecting pins and handle pins.

The beneficial effects of the present invention are as follows: 1. The two support rings support the slip tooth plate, which plays the role of dispersing the stress on the slip tooth plate, thereby increasing the range of the slips that can bear the load, and the maximum capacity of the slips The load reaches 750 US tons, which is suitable for the deepest drilling operation in the world at present; 2. The SDHL drill pipe slip is compact in structure, and its external dimensions are similar to conventional drill pipe slips, small and flexible, and easy to use; 3. The back of the slip body is tapered Hollow shape, when the drill pipe slips hold the drill pipe, the drill pipe is held by the slip tooth plate, the back of the slip is in contact with the inner cone of the inner lining of the turntable, and the taper contacts when the drill pipe is subjected to the downward force of its own weight The slips are forced to hold the drill pipe tightly without slipping.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a top view of the structure of the present invention.

Fig. 3 is a schematic diagram of the use state of the present invention.

Among them: 1. Slip body, 2. Drill pipe, 3. Turntable bushing, 4. Turntable bushing lining, 11. Retaining ring screw, 12. Slip tooth plate, 13. Support ring, 14. Left page card Tile, 15, slips in the middle page, 16, slips in the right page, 17, left handle, 18, middle handle, 19, right handle, 20, connecting pin, 21, cotter pin, 22, handle pin, 23, Dental retaining ring.

Detailed ways

In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the embodiments and accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

As shown in Fig. 1 and Fig. 2, a SDHL type heavy-duty drill pipe slip includes a slip body 1, and the slip body 1 is equipped with a tooth plate groove, and the tooth plate groove is equipped with a slip tooth plate 12 and a support ring 13 , the slip tooth plate 12 is fixedly installed on the slip body 1 through the tooth plate groove, the slip body 1 includes the left slip 14, the middle slip 15 and the right slip 16, the left slip 14, the middle The slips 15 and the slips 16 on the right page are connected together through the connecting pin 20, and the cotter pin 21 is installed on the top of the connecting pin 20, which acts as a double insurance. The slip body 1 is equipped with a slip handle, and the slip handle includes The left hand handle 17, the right hand handle 19 and the middle handle 18, the head of the slip body 1 is provided with a handle pin hole, the left hand handle 17, the right hand handle 19 and the middle handle 18 are respectively connected with the left slips through the handle pin 22 14. The slips 16 on the right page and the slips 15 on the middle page are connected together, the cotter pins 21 are installed on the handle pins 22, and the tooth plate stop ring 23 is also set on the slip body 1, which is fixed and installed by the stop ring screws 11 On the slip body 1, the slip retaining ring 23 blocks the slip tooth plate 12 to ensure that the slip tooth plate 12 will not fall off from the slip body 1. There are two supporting rings 13, which are respectively fixed and installed on the slip tooth plate 12 middle and bottom, the back of the slip body 1 is tapered and hollowed out.

As shown in Figure 3, when the above-mentioned SDHL type heavy-duty drill pipe slips are used, when the drill pipe 2 needs to be clamped, the slip body 1 needs to be lifted manually, and the slip body 1 is thrown into the place where the drill pipe 2 passes. The drill pipe 2 can be clamped inside the core-filling liner 4 of the turntable, which is easy to use and can withstand a maximum load of 750 US tons.

Claims (6)

1. a kind of SDHL types big load drill pipe slip, which is characterized in that including slips body, there is dental lamina slot, institute on the slips body It states and slip dog and support ring is housed on dental lamina slot, the slip dog is fixedly mounted on by dental lamina slot on slips body, described There are two support ring is total, it is respectively and fixedly installed to slip dog middle part and bottom.

2. a kind of SDHL types big load drill pipe slip according to claim 1, which is characterized in that the slips body includes a left side Page slips, middle page slips and recto slips, the verso slips, middle page slips and recto slips are connected to one by connecting pin It rises.

3. a kind of SDHL types big load drill pipe slip according to claim 1, which is characterized in that be arranged on the slips body There is dental lamina baffle ring, is fixedly mounted on slips body by baffle ring screw.

4. a kind of SDHL types big load drill pipe slip according to claim 2, which is characterized in that installed on the slips body It includes that left hand handle, right handgrip and middle hand handle, slips body head are provided with hand handle pin to have slips hand handle, the slips hand handle Hole, the left hand handle, right handgrip and middle hand handle are connect with verso slips, recto slips and middle page slips by hand handle pin respectively Together.

5. a kind of SDHL types big load drill pipe slip according to claim 2, which is characterized in that the slips body back side is in Taper Openworks shape.

6. a kind of SDHL types big load drill pipe slip according to claim 2 or 4, which is characterized in that the connecting pin and It is mounted on split pin on hand handle pin.