CN203867564U

CN203867564U - Laterolog-3 instrument

Info

Publication number: CN203867564U
Application number: CN201420185139.3U
Authority: CN
Inventors: 董哲; 汪力
Original assignee: ANSHAN SHENKUO MACHINE MANUFACTURE Co Ltd
Current assignee: ANSHAN SHENKUO MACHINE MANUFACTURE Co Ltd
Priority date: 2014-04-16
Filing date: 2014-04-16
Publication date: 2014-10-08
Anticipated expiration: 2024-04-16

Abstract

The utility model relates to a laterolog-3 instrument. The laterolog-3 instrument comprises an upper protective cap, an upper connector, a lower connector and a lower protective cap, wherein the upper protective cap, the upper connector, the lower connector and the lower protective cap are connected in sequence, the lower connector and a mandrel are integrated, an anti-rotation pad, an upper A1 insulating ring, an upper A1 electrode ring, an upper A0 insulating ring, a lower A0 electrode ring, a lower A0 insulating ring, a lower A1 electrode ring and a lower A1 insulating ring are arranged on the lower connector in a sleeved mode in sequence, and a long through framework body is arranged inside the lower connector. Compared with the prior art, the laterolog-3 instrument has the advantages that due to the fact that the mandrel and the lower connector are integrated, the effective length of an instrument string can be reduced easily; wiring of an electrode system is reasonable, a circuit part vertically penetrates through the instrument, circuits are well connected, and the longitudinal resolution is high; a circuit framework assembly is hidden inside the mandrel of the electrode system by increasing the inner diameter of the mandrel of the electrode system and reducing the diameter of the circuit part, and an integrated pup joint is formed; the structure is simple, using is convenient, thin strata can be marked out, and the laterolog-3 instrument is hardly affected by wells or strata.

Description

Guard focusing device

Technical field

The utility model relates to a kind of oil well logging instrument, relates in particular to a kind of guard focusing device.

Background technology

For the main evaluation oil reservoir of petroleum exploration and development oiliness, calculating oil saturation, need accurate formation resistivity, especially under shield layer with high resistivity and salt-water mud condition, be difficult to obtain accurate formation resistivity.At present, in petroleum exploration logging technology, resistivity instrument is the important means of trying to achieve formation rock electrology characteristic, latter period of oilfield development, and reservoir water flooding is serious, needs a kind of rock true resistance rate that more approaches, the obvious guard focusing device of layered effect.

Summary of the invention

It is the novel guard focusing device of integral type structure that the utility model provides a kind of mandrel and lower contact, and top connection and lower contact are directly connected to form whole pipe nipple, and circuit part is from inner up/down perforation, compact conformation, and line connectivity is good, and longitudinal frame is high.

In order to achieve the above object, the utility model is realized by the following technical solutions:

Guard focusing device, comprise the upper helmet, top connection, lower contact and the lower helmet that are connected in turn, lower contact and mandrel are integral type structure, on it, be set with successively dead ring, lower A0 electrode retaining collar, lower A0 dead ring, lower A1 electrode retaining collar, lower A1 dead ring under anti-turning pad, upper A1 dead ring, upper A1 electrode retaining collar, upper A0, elongated skeleton body is equipped with in lower contact inside.

Described top connection front end is provided with mother socket one, Compress Spring and spring base one, and is connected with upper helmet by threaded collar.

Seal disc, sealing-plug assembly, Connection Block, public plug two, mother socket two, spring base two, spring, male plug are installed successively first in described lower contact.

Described electrode retaining collar is equipped with Baltimore groove, and lower contact outer round surface is provided with trough.

Described electrode retaining collar sealing-plug wire bonds lug plate, and establish endothermic tube, use screw fastening in the Baltimore groove of electrode retaining collar.

Compared with prior art, the beneficial effects of the utility model are:

1) have mandrel and lower contact integral structure, compact conformation, is conducive to shorten the effective long malicious of instrument string;

2) electrode system wiring is reasonable, and lower contact cylindrical is established trough, and circuit part is from inner up/down perforation, and connection is good, and longitudinal frame is high;

3) adopt and strengthen electrode system mandrel internal diameter, the method for dwindling circuit part diameter, is hidden in lower contact inside by circuit framework assembly, cancels circuit case part, is combined into a whole pipe nipple, has articulated well logging function with Sonic Digital Tool device.

4) simple in structure, easy to install, can mark off thinner stratum, and be subject to the impact on well, stratum less.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation one.(parts that install lower contact and inside and outside thereof)

Fig. 2 is the utility model structural representation two.(upper helmet)

Fig. 3 is the utility model structural representation three.(lower helmet)

In figure: 1. go up on 2. times helmets of helmet, 3. mother socket one 4. spring base one 5. Compress Spring 6. threaded collar 7. top connection 8. seal disc 9. sealing-plug assembly 10. anti-turning pad 11. Connection Blocks 12. on A1 dead ring 13. public plug 2 14. mother socket 2 15. spring bases 2 16. on A1 electrode retaining collar 17. springs 18. 23. times A1 dead rings of 20. times A0 dead rings of 19. times A0 electrode retaining collars of A0 dead ring, 21. times A1 electrode retaining collars, 22. skeleton body, 24. lower contact 25. male plugs first

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further:

See Fig. 1-Fig. 3, it is structural representation of the present utility model, the utility model guard focusing device, comprise the upper helmet 1, top connection 7, lower contact 24 and the lower helmet 2 that are connected in turn, lower contact 24 is elongate structure, on it, be set with successively anti-turning pad 10, upper A1 dead ring 12, upper A1 electrode retaining collar 16, upper A0 dead ring 18, lower A0 electrode retaining collar 19, lower A0 dead ring 20, lower A1 electrode retaining collar 21, lower A1 dead ring 23, elongated skeleton body 22 is equipped with in lower contact 24 inside.

Described top connection 7 front ends are provided with mother socket 1, Compress Spring 5 and spring base 1, and are connected with upper helmet 1 by threaded collar 6.

Seal disc 8, sealing-plug assembly 9, Connection Block 11, public plug 2 13, mother socket 2 14, spring base 2 15, spring 17, male plug first 25 are installed in described lower contact 24 successively.

Described electrode retaining collar is equipped with Baltimore groove, and lower contact 24 is provided with deposits wire casing, and lower contact 24 outer round surface are provided with trough.

The utility model guard focusing device has mandrel and lower contact integral structure, adopt and strengthen electrode system mandrel internal diameter, dwindle the method for circuit part diameter, circuit framework assembly is hidden in to lower contact inside, cancel circuit case part, be combined into a whole pipe nipple, articulated well logging function with Sonic Digital Tool device, its compact conformation, is conducive to shorten the effective length of instrument string.

The wiring of the utility model electrode system is reasonable, lower contact 24 cylindricals are established trough, guarantee cable run first 13 from the inner male plug of lower contact 24, A1 electrode retaining collar 21, lower A0 electrode retaining collar 19, upper A1 electrode retaining collar 16, lower contact sealing-plug 9, seal disc 8 to top connection 7 mother sockets 1, connect, and the insulaion resistance of each dead ring is greater than 500 megohms.

When the utility model is used, by power supply circuits output bucking current, export principal current simultaneously, principal current enters stratum by main electrode, bucking current enters stratum by upper A1 dead ring 12, upper A1 electrode retaining collar 16, lower A0 dead ring 20, lower A1 electrode retaining collar, according to different bucking electrode combinations, obtain the resistivity curve of different investigation depths.

Following examples are implemented take technical solutions of the utility model under prerequisite, provided detailed embodiment and concrete operating process, but protection domain of the present utility model are not limited to following embodiment.In following embodiment, method therefor is conventional method if no special instructions.

[embodiment 1] a kind of concrete application of the present utility model

The present embodiment comprises upper helmet 1, top connection 7, lower contact 24 and the lower helmet 2 being connected in turn, lower contact 24 is integral type structure with mandrel, on it, be set with successively anti-turning pad 10, upper A1 dead ring 12, upper A1 electrode retaining collar 16, upper A0 dead ring 18, lower A0 electrode retaining collar 19, lower A0 dead ring 20, lower A1 electrode retaining collar 21, lower A1 dead ring 23, elongated skeleton body 22 is equipped with in lower contact 24 inside.

In the present embodiment, lower contact is withstand voltage steel cylinder, and its internal diameter is ￠ 56mm, and external diameter is ￠ 110mm, and the length of ￠ 56mm inner radius is 809mm.

In the present embodiment, top connection 7 front ends are provided with 31 core mother sockets 3, Compress Spring 5 and spring base 1, and are connected with upper helmet 1 by threaded collar 6.Seal disc 8, sealing-plug assembly 9, Connection Block 11,29 core public plug 13,29 core mother sockets 14, spring base 2 15, spring 17,31 core public plugs 25 are installed in lower contact 24 successively.

Each electrode retaining collar is equipped with Baltimore groove, electrode retaining collar sealing-plug wire bonds lug plate, and establish endothermic tube, use screw fastening in the Baltimore groove of electrode retaining collar.Lower contact 24 outer round surface are provided with trough, and assurance electrode retaining collar institute is leaded to be connected with upper and lower side master-slave socket socket through track.

The present embodiment is one of insight 1000 Quick Measuring platform shaft subsystems, according to insight 1000 Quick Measuring platform shaft overall plans, for shortening the effective length of instrument string, adopt lower contact 24 and mandrel integral structure, and strengthen electrode system mandrel internal diameter, dwindle the method for circuit part diameter, circuit framework assembly is hidden in to electrode system axle inner, cancels circuit case part, be combined into a whole pipe nipple, articulate with Sonic Digital Tool device, complete well logging function.

Claims

1. guard focusing device, comprise the upper helmet, top connection, lower contact and the lower helmet that are connected in turn, it is characterized in that, lower contact and mandrel are integral type structure, on it, be set with successively dead ring, lower A0 electrode retaining collar, lower A0 dead ring, lower A1 electrode retaining collar, lower A1 dead ring under anti-turning pad, upper A1 dead ring, upper A1 electrode retaining collar, upper A0, elongated skeleton body is equipped with in lower contact inside.

2. guard focusing device according to claim 1, is characterized in that, described top connection front end is provided with mother socket one, Compress Spring and spring base one, and is connected with upper helmet by threaded collar.

3. guard focusing device according to claim 1, is characterized in that, seal disc, sealing-plug assembly, Connection Block, public plug two, mother socket two, spring base two, spring, male plug is installed successively first in described lower contact.

4. guard focusing device according to claim 1, is characterized in that, described electrode retaining collar is equipped with Baltimore groove, and lower contact outer round surface is provided with trough.

5. according to the guard focusing device described in claim 1 or 4, it is characterized in that, described electrode retaining collar sealing-plug wire bonds lug plate, and establish endothermic tube, use screw fastening in the Baltimore groove of electrode retaining collar.