CN202117605U

CN202117605U - Oilfield salvage anchor head

Info

Publication number: CN202117605U
Application number: CN2011201594121U
Authority: CN
Inventors: 刘宝峰
Original assignee: TIANJIN WOKE PETROLEUM MACHINERY TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN WOKE PETROLEUM MACHINERY TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2011-05-18
Filing date: 2011-05-18
Publication date: 2012-01-18
Anticipated expiration: 2021-05-18

Abstract

The utility model relates to an oilfield salvage anchor head, comprising a pull rod, a guide pillar and slips. The slips are composed of clamp blocks at tail ends, slip bodies and screw threads that are uniformly disposed at the circumferential periphery of front end portions of the slips. The pull rod and the guide pillar are coaxially arranged. The slips are radially and uniformly mounted on the guide pillar. Clamp grooves are radially provided in the front end portion of the pull rod. The front end of the guide pillar has a conical surface, the center is provided with guide blocks, and the rear end is coaxially embedded to the front end portion of the pull rod. The clamp blocks at the tail ends of the slips are clamped in the clamp grooves which are uniformly provided in the pull rod along the radial direction. The slip bodies are embedded in the guide blocks at the center of the guide pillar. The front end portions of the slips equipped with the screw threads are attached on the conical surface of the guide pillar. The oilfield salvage anchor head, which is an indispensible tool for oilfield salvage, is simple in structure, scientific and reasonable in design, quite compact in integral structure and low in cost and is easy to prepare.

Description

Anchor head is salvaged in the oil field

Technical field

The utility model belongs to the oil field instrument, relates to the salvaging to oil well pump, and anchor head is salvaged in especially a kind of oil field.

Background technology

At present, the oil well pump that the oil pick-up tube in oil field is installed is owing to be to connect through the screw thread sucker rod, and the oil well pump accident in oil pick-up tube that drops takes place easily.Usually salvaging oil well pump is to adopt a kind of its front end to be shaped on the fishing rod of screw thread, and this fishing rod extracts ground through the screw thread on the engagement oil well pump with oil well pump.The defective that exists is: owing to be that screw thread and oil well pump are connected with a joggle; Because screw thread is difficult to direct coaxial engagement, be the interior side that screw thread is articulated in oil pick-up tube perhaps, and oil well pump is heavier; The oil pick-up tube mouth of pipe that causes mentioning ground oil well pump damages; Simultaneously also cause coming off of oil well pump easily, it is unreliable to salvage, and efficient is lower.

Through retrieval, do not find identical with present patent application or akin publication document.

The utility model content

The purpose of the utility model is to overcome the weak point of prior art, a kind of design science is provided, salvages reliable and stable oil field salvaging anchor head.

The purpose of the utility model is achieved in that

Anchor head is salvaged in a kind of oil field, it is characterized in that: be made up of the fixture block that slips is made by tail end, slips body and be uniformly distributed with made screw thread in the circumferential outer rim of slips leading section and constitute pull bar, lead, slips; Pull bar and the coaxial setting of lead; The slips radial equipartition is installed on lead, radially is shaped on draw-in groove at the pull bar leading section, is shaped on the conical surface at the front end of lead; The middle part is shaped on a guide pad, the coaxial pull bar leading section that is inlaid in rear end; The made fixture block of the tail end of slips is installed in the made draw-in groove of pull bar radial equipartition, and the slips body is inlaid in the made guide pad in lead middle part, and the position that the leading section portion of slips promptly is shaped on screw thread is attached on the made conical surface of lead.

And said guide pad adopts screw to carry out radially-directed through fairlead and installs.

And the slips that said radial equipartition is installed on the lead is three.

The advantage and the good effect of the utility model are:

1, the slips of this salvaging anchor head can the flexible axial displacement of expansion on the made conical surface of lead; Therefore after slips gets into the oil pick-up tube of oil well pump; Lift that pull bar can be realized opening of slips so that the screw thread of slips is installed in the oil pick-up tube, this moment slips screw thread realizes is to increase frictional force, rather than screw thread engagement capability; Can when salvaging, not destroy oil pick-up tube thus, effectively lowered cost.

2, the slips of this salvaging anchor head is in the process of extracting oil well pump, and suffered power is big more, and the open angle of slips is big more, has avoided coming off of oil well pump, has improved salvaging efficient.

3, the utility model result is simple, and design science is reasonable, and total is very compact, with low cost, easy to manufacture, is that indispensable instrument is salvaged in the oil field.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is that the A-A of Fig. 1 is to the cross section cutaway view Amplified image;

Fig. 3 is the slips structural representation of Fig. 1;

Fig. 4 is the structural representation that removes fairlead and slips (pull bar phantom) of Fig. 1.

The specific embodiment

Be described in detail the embodiment of the utility model below in conjunction with accompanying drawing; Need to prove that present embodiment is narrative, is not determinate, can not limit the protection domain of the utility model with this.

Anchor head is salvaged in a kind of oil field, is made up of the fixture block 2 that slips is made by tail end, slips body 4 and be uniformly distributed with made screw thread 5 in the circumferential outer rim of slips leading section and constitute pull bar 1, lead 6, slips; Pull bar and the coaxial setting of lead; The slips radial equipartition is installed on lead, radially is shaped on draw-in groove 8 at the pull bar leading section, is shaped on the conical surface at the front end of lead; The middle part is shaped on a guide pad 7, the coaxial pull bar leading section that is inlaid in rear end; The made fixture block of the tail end of slips is installed in the made draw-in groove of pull bar radial equipartition, and the slips body is inlaid in the made guide pad in lead middle part, and this guide pad adopts screw that the slips body is carried out radially-directed through fairlead 3 and installs; The position that the leading section portion of slips promptly is shaped on screw thread is attached on the made conical surface of lead, so that flexible axial displacement is expanded at the screw thread position of slips on the conical surface.

In the present embodiment, the slips that radial equipartition is installed on the lead is three, and guide pad is three thus, and draw-in groove also is three.

The operating principle of the utility model is:

The tail end of pull bar is connected with fishing rod through screw-threaded engagement, and under action of gravity, anchor head gets in the oil pumping tube; After the lead front end enters into oil pick-up tube, lean on the impact slips to open, and be stuck in the oil pick-up tube; At this moment, propose operation on can carrying out, the screw thread of slips is installed in the oil pick-up tube; Can not come off, clamp stable.

Claims

1. anchor head is salvaged in an oil field, it is characterized in that: be made up of the fixture block that slips is made by tail end, slips body and be uniformly distributed with made screw thread in the circumferential outer rim of slips leading section and constitute pull bar, lead, slips; Pull bar and the coaxial setting of lead; The slips radial equipartition is installed on lead, radially is shaped on draw-in groove at the pull bar leading section, is shaped on the conical surface at the front end of lead; The middle part is shaped on a guide pad, the coaxial pull bar leading section that is inlaid in rear end; The made fixture block of the tail end of slips is installed in the made draw-in groove of pull bar radial equipartition, and the slips body is inlaid in the made guide pad in lead middle part, and the position that the leading section portion of slips promptly is shaped on screw thread is attached on the made conical surface of lead.

2. anchor head is salvaged in oil field according to claim 1, it is characterized in that: said guide pad adopts screw to carry out radially-directed through fairlead and installs.

3. anchor head is salvaged in oil field according to claim 1, and it is characterized in that: the slips that said radial equipartition is installed on the lead is three.