CN2141613Y

CN2141613Y - Winding-proof device for cable

Info

Publication number: CN2141613Y
Application number: CN 92235857
Authority: CN
Inventors: 刘国生
Original assignee: Liaohe Petroleum Exploration Bureau Xinglongtai Oil Production Plant
Current assignee: Liaohe Petroleum Exploration Bureau Xinglongtai Oil Production Plant
Priority date: 1992-10-20
Filing date: 1992-10-20
Publication date: 1993-09-01
Anticipated expiration: 2002-10-20

Abstract

The utility model relates to a winding-proof device for cables, which is used for preventing the cables from winding an oil tube in the annulus logging process of the pumping well in the oil field. The utility model is composed of a guide cone 1, a pup joint 3, a steel jacket 5, spring steel bands 7, etc. Due to the fact that an inclined guide cone and two archy spring steel bands are arranged on the device, the gimlet-point of the guide cone is abutted on one side of a jacket pipe wall and the cable can not pass round the jacket pipe, so that the accident that the cables wind the oil tube can be effectively prevented and test quality is guaranteed as well as the progress. The utility model has the advantages of few constructional elements, light weight, low processing cost and convenient installation, adjustment and operation, etc.

Description

Winding-proof device for cable

The utility model relates to a kind of cable anti-wrap device that oil field pumping well annulus logging process prevents the cable coiled tubing that is used for.

In recent years, the annulus logging technology is progressively promoted in pumpingh well production test field, at present by each oil field oil recovery mining site extensive use.In pumpingh well annulus logging process, need with cable tester down to the shaft bottom or the oil reservoir position, the accident of test cable coiled tubing happens occasionally.In case cable coiled tubing accident takes place, handles very difficult, time and effort consuming not only, and can break cable seriously the time and cause the instrument well that falls, even influence the oil well ordinary production.

Task of the present utility model is to provide a kind of cable anti-wrap device, utilizes it can prevent the generation of cable coiled tubing accident effectively in pumpingh well annulus logging process, thereby guarantees carrying out smoothly of test job.

The following realization of the utility model.This device by starting taper 1, silk 2, pipe nipple 3, become button pipe nipple 4, steel bushing 5, hold-down screw 6 and spring steel band 7 and form.Its structural relation and number of assembling steps are: at first, the end that pipe nipple 3 is had a step is packed in the screw of starting taper 1; Then, silk 2 is enclosed within outside it and with starting taper 1 screw thread from pipe nipple 3 other ends tightens; To become button pipe nipple 4 and pipe nipple 3 other end thread connection again; Steel bushing 5 is enclosed within on the change button pipe nipple 4; With hold-down screw 62 spring steel band 7 two ends are separately fixed at (gap portions that spring steel band 7 mills outwardly) on starting taper 1 and the steel bushing 5 again.When the oil well operation, will be assembled in tubing string afterbody (becoming the pin thread of button pipe nipple 4 upper ends and the female connection of oil pipe afterbody box cupling) by this anti-wrap device that above-mentioned assembling finishes, together in the lower going-into-well.When carrying out annulus logging, by cable instrument is lowered to the oil well annular space, this device can play the effect that prevents the cable coiled tubing, guarantees that instrument removes smoothly and proper testing.

The utility model modern design, rational in infrastructure, owing to be provided with inclined-plane starting taper and two arch spring steel bands in this device, can make starting taper awl point near casing wall one side, make cable can't walk around it, thereby prevent the generation of cable coiled tubing accident effectively, guarantee test mass and progress.This device has also that member is few, in light weight, processing cost is low and installation, adjustment, characteristics such as easy to use.

Fig. 1 is a general structure schematic diagram of the present utility model.

Fig. 2 is the structural representation of starting taper 1.

Fig. 3 is the A-A profile of Fig. 2.

Below in conjunction with accompanying drawing enforcement of the present utility model is described further.

In the utility model, starting taper 1 long 180mm, an end external diameter 88mm, dark in the circular groove inner surface car of 38mm has M72 * 2 negative threads, another end mill inclined-plane at 45, the awl point is processed into the circular arc of R3, same cross section, cone middle part is processed with 2 M6 screwed holes, and the angle between two centerline holes is 120 °; Silk 2 a long 150mm, external diameter 72mm, internal diameter 58mm, the one end has pin thread; Pipe nipple 3 long 230mm, external diameter 56mm, internal diameter 48mm, an end have long φ 66 steps of 10mm, and the other end has pin thread; Become button pipe nipple 4 long 150mm, interior external diameter is respectively 52,73mm, two ends have 27/8 respectively " TBG oil pipe pin thread and M56 * 2 negative threads; Steel bushing 5 is the annulus of a long 40mm, and inside and outside footpath is respectively 74,88mm, and 2 M6 screwed holes are arranged on the same cross section on it, and the angle between two centerline holes is 120 °; Spring steel band 7 long 270mm, wide 15mm, thick 10mm, the centre is arch, and two ends are milled with φ 10 counterbores of a dark 3mm respectively, are drilled with φ 6.5 eyelets on it in order to insert hold-down screw 6.In above-mentioned each parts, removing the spring steel band material is 65Mn or 60Si ₂Outside the Mn, all the other are steel No. 45.

Claims

1, a kind of cable anti-wrap device that is used for the pumpingh well annulus logging, by starting taper 1, silk 2, pipe nipple 3, become button pipe nipple 4, steel bushing 5, hold-down screw 6 and spring steel band 7 and form, it is characterized in that: the end that pipe nipple 3 has a step is packed in the screw of starting taper 1, and the silk 2 that is enclosed within pipe nipple 3 outsides is tightened with starting taper 1 screw thread; Pipe nipple 3 other ends link with screw thread with becoming button pipe nipple 4, become on the button pipe nipple 4 to be with steel bushing 5; The two ends of spring steel band 7 (2) are fixed on (gap portions that spring steel band 7 mills outwardly) on starting taper 1 and the steel bushing 5 with hold-down screw 6 respectively.

2, cable anti-wrap device according to claim 1 is characterized in that, starting taper 1 one end inner surfaces have negative thread, another end mill inclined-plane at 45, and the awl point is processed into circular arc, and there are 2 screwed holes in same cross section, cone middle part, and angle is 120 ° between two centerline holes.

3, cable anti-wrap device according to claim 1 is characterized in that, is arch in the middle of the spring steel band 7, and two ends are milled with a counterbore respectively, are drilled with the eyelet that is used for inserting hold-down screw 6 on it.