CN103775065A - Downhole locating device and method - Google Patents

Abstract

The invention discloses a downhole locating device and method, and belongs to the technical field of oil well downhole operation. The downhole locating method comprises the following steps that a locating connector is installed at the designed position of a downhole pipe column which enters an oil well in advance; a locator is arranged at the front end of an entry device, and enters the oil well along with the entry device, and when a contact head of the locator reaches the locating connector which is arranged on the downhole pipe column in advance, the contact head compresses a spring, an insulating layer is punctured, and a signal contact is switched on, and gives out an in-place signal. The downhole locating device and method have the advantage that the entry depth of the device can be accurately determined.

Description

A kind of down-hole positioning device and localization method

Technical field

The present invention relates to a kind of down-hole positioning device and localization method, belong to oil well operation technique field.

Background technology

In oil well operation, in order to determine the depth of setting of equipment, the method that oil pipe was counted or measured to use to Hoisting System is conventionally calculated at present.But due to error in dipping, and cable, the elongation of tubing string under Gravitative Loads, cause compute depth and actual depth of setting to produce error, lower deeply larger error is larger.

Summary of the invention

In order to overcome the deficiencies in the prior art, the invention provides a kind of down-hole positioning device and localization method, in down-hole string, accurately locate being lowered to thing, overcome because of error in dipping and conduct oneself with dignity and extend the problem of bringing.

A kind of down-hole localization method, contains following steps;

Landing nipple is arranged on to the design attitude of the down-hole string that enters in advance well;

Locator is placed in and is lowered to front equipment end, and with equipment G.I.H, in the time that the touching head of locator arrives the landing nipple being preset on down-hole string, just Compress Spring, punctures insulating layer, thereby the signal that puts in place is sent in Continuity signal contact.

A kind of down-hole positioning device, contains locator and landing nipple;

Landing nipple is arranged on the design attitude of down-hole string;

Between the signalling contact of locator and touching head, establish insulating layer; Insulating layer bottom shock mount,

Locator is connected to the front end into well equipment.

Advantage of the present invention is accurately to determine the depth of setting of equipment.

Accompanying drawing explanation

When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the present invention and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:

Fig. 1 is structural representation of the present invention.

Fig. 2 is structural representation of the present invention.

Below in conjunction with drawings and Examples, the present invention is further described.

The specific embodiment

Obviously the many modifications and variations that, those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.

Embodiment 1: as shown in Figure 1 and Figure 2, a kind of down-hole positioning device, contains locator 1 and landing nipple 7;

Landing nipple 7 is arranged on down-hole string 6;

Between the signalling contact 2 of locator 1 and touching 5, establish insulating layer 3; Insulating layer 3 bottom shock mounts 4,

Locator 1 connects into the front end of well equipment 8.

For controlling the depth of setting of well equipment in tubing string, referring to Fig. 2.

First landing nipple 7 is arranged on to the design attitude of the tubing string 6 that enters in advance well;

Locator 1 is placed in into well equipment 8 front ends, with entering well equipment 8 G.I.Hs, in the time that touching 5 arrival for locator 1 are preset at the landing nipple 7 on tubing string 6, just Compress Spring 4, punctures insulating layer 3, thus Continuity signal contact 2, send the signal that puts in place, and automatic stopping.

As mentioned above, embodiments of the invention are explained, but as long as not departing from fact inventive point of the present invention and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection scope of the present invention.

Claims (2)

1. a down-hole localization method, is characterized in that containing following steps;

Landing nipple is arranged on to the design attitude of the down-hole string that enters in advance well;

Locator is placed in and is lowered to front equipment end, and with equipment G.I.H, in the time that the touching head of locator arrives the landing nipple 7 being preset on down-hole string, just Compress Spring, punctures insulating layer, thereby the signal that puts in place is sent in Continuity signal contact.

2. a down-hole positioning device, is characterized in that containing locator and landing nipple;

Landing nipple is arranged in down-hole string;

Between the signalling contact of locator and touching head, establish insulating layer; Insulating layer bottom shock mount,

Locator is connected to the front end into well equipment.

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