CN203271647U

CN203271647U - Combined type coring device

Info

Publication number: CN203271647U
Application number: CN 201220532804
Authority: CN
Inventors: 丁
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-08
Filing date: 2012-10-08
Publication date: 2013-11-06
Anticipated expiration: 2022-10-08

Abstract

The utility model relates to a combined type coring device comprising a protective cap, a small housing, a steel wire jump ring, a large disassembling ring, a small disassembling ring, an upper connecting ring, a lower connecting ring, an upper joint, a middle joint, a lower joint, a locking ring, an anti-compression outer housing, a selective injector, a main body, a through pin, a pressure spring sheet, a small outer housing and a screw protector, wherein the middle and the lower joints are respectively welded on the upper and lower parts of the main body; the middle joint is connected with the anti-compression outer housing via the steel wire jump ring, the large disassembling ring, the small disassembling ring and the upper connecting ring; the anti-compression outer housing is connected with the upper joint; the upper end of the upper joint is connected with the protective cap; the lower end of the lower joint is connected with the small outer housing; an inner thread of the small outer housing is connected with the screw protector; and the selective injector is arranged in the anti-compression outer housing. The combined type coring device possesses excellent sealing effect with easy maintenance and durableness; and by the use of device, failure rate is decreased and success rate of one-time coring is improved. Multiple guns serially connected with the coring device can be put into well , thereby improving coring time efficiency; especially when the device is applied to highly-deviated well, resistance meeting rate is reduced; and the combined type coring device further facilitates coring device conveying for drill.

Description

A kind of combined type corer

Technical field:

The utility model relates to a kind of downhole hardware for the oil well logging coring operation, belongs to the petroleum well logging technology class.

Background technology:

Coring operation is the important step in the oil well logging operation process, and corer is the downhole tool that adopts when implementing coring operation, and can corer performance quality most important to high-quality and efficiently completing coring operation.At present, all there is some problems on on-the-spot impacting type corer structure, production technology and the employing material of using, its performance and result of use are a greater impact.At first, existing corer trajectory insulation and sealing press four fluorine tube and phenyl tetrafluoride pad to realize with screw, so not only install very difficultly, and four fluorine tube and phenyl tetrafluoride pad are fragile under extruding energetically, cause that easily the insulation of corer trajectory is bad; Secondly, the impacting type corer is with wire rope, core barrel to be fixed on corer, the length of wire rope still only has the 10cm left and right generally in the 60cm left and right from the bearing to the trajectory, all the other wire rope are all exposed outside the corer main body, old-fashioned corer is with white cotton tape, wire rope to be tied, allow it near the corer main body, corer is when going into the well, in case white cotton tape rubs, wire rope all scatters, and causes the difficulty of going into the well.Simultaneously, core barrel easily interrupts wire rope when igniting, and the yield rate of coring is reduced.In addition, in actual coring operation, often a bite well need to be got many and sometimes even reaches a hundreds of rock core, and old-fashioned corer is once gone into the well and can only be got at most 36 rock cores.A bite well is cored and often will be gone into the well several times even tens times like this, and operating efficiency is very low, and not only cost is high, has also increased unsafe factor.

The utility model content:

The purpose of this utility model is to provide a kind of combined type corer that can improve well logging coring operation operating efficiency, reduce security risk.

Above-mentioned purpose of the present utility model is to realize like this.this kind combined type corer is by helmet, small shell, wire circlip, unlinked in large minute, unlinked in little minute, the upper chain of rings, the lower chain of rings, top connection, center tap, lower contact, retaining ring, pressure-proof outer cover, selector, main body, wear pin, compressing tablet, little shell, thread protector, 28 core plugs, 45 core plugs, 45 core sockets form, its structure assembled relation is as follows: on main body, the below is welded with respectively center tap and lower contact, 45 core plugs are housed in center tap, 28 core plugs are housed in lower contact, center tap passes through wire circlip, unlinked in large minute, unlinked in little minute and be connected with pressure-proof outer cover with the upper chain of rings, the internal thread of pressure-proof outer cover upper end is connected with top connection, wire circlip is passed through in the top connection upper end, unlinked in large minute, unlinked in little minute and be connected with helmet with the upper chain of rings, the lower contact lower end is connected with little shell with screw thread, and little shell internal thread is connected with thread protector, 36 trajectories on main body are by the 1-36 core of higher temperature line and 45 core plugs, the 41-45 core of 45 core plugs is connected with 1,2,6,7,8 cores of 28 core plugs respectively, wear pin and vertically be inserted in main body both sides, push down with two compressing tablets, be used for fixing the wire rope of wearing core barrel, be provided with selector in pressure-proof outer cover, be connected with small shell by higher temperature line above selector, the below is connected with center tap by 45 core sockets, is provided with retaining ring above selector.This kind corer can singly prop up or branched being used in combination, and during overall package, will have the upper and lower being combined through series connection successively of single corer of same structure, specification, and upper and lower end is loaded onto respectively helmet and thread protector.during coring operation, first each trajectory being loaded onto gunpowder is connected with core barrel corer is connected with 7 core cables, use the cable G.I.H, after the corer degree of depth of living in is lower than a bottom target zone, on carry corer, after first trajectory aimed at layer position, light gunpowder for the 220V alternating current on ground, the thrust of powder burning is injected the stratum with core barrel, owing to ining succession with wire rope between core barrel and corer, on carry the corer core barrel and just be suggested with rock core, when carrying corer in continuation, a gear shifting signal is given on ground, shift gears by selector, second trajectory connected, after second trajectory aimed at second target zone, igniting was cored again.Cycling successively, until take the rock core of whole layers of position, thus complete whole coring operation.

The utility model adopts advanced material to make the sealed wiring post, good sealing effect, installation and maintenance are convenient, and durable in use, can increase work efficiency, reduce fault rate, because wire rope is embedded in main body fully, thereby be convenient to go into the well, not easy to wearly be hampered, core barrel is beaten less than wire rope when igniting is cored, and can improve the one-time success rate of coring.This kind corer can branched serial connection be gone into the well, and has improved the timeliness of coring, and particularly can reduce the probability that is hampered when high angle hole, also carries corer to go into the well for drilling tool simultaneously convenience is provided.

Description of drawings:

Fig. 1 is the structural representation of combination corer.

Fig. 2 is the structural representation of the utility model combination serial connection, and in figure, I, II, III are respectively first, second, third corer.

The specific embodiment:

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

As shown in the figure, the utility model corer by helmet 1, small shell 2, wire circlip 3, unlinked 4 in little minute, unlinked 5 in large minute, upper a chain of 6, lower a chain of 11, top connection 7, center tap 12, lower contact 16, retaining ring 8, pressure-proof outer cover 10, selector 9, main body 13, wear pin 14, compressing tablet 15, little shell 17, thread protector 18,28 core plugs 19,45 core plugs 20,45 core sockets 21 and form, its structure assembled relation is as previously mentioned.Wherein, vertically be furnished with 36 trajectories on main body 13, core barrel is housed respectively in each trajectory, each below, trajectory contact is drilled with respectively Φ 8mm closed hole, be provided with the sealed wiring post in closed hole, prap is provided with sealing ring, press polyether-ether-ketone (Peek) material outside the trajectory contact as insulation, each trajectory one side milling has the groove of a 25 * 5mm to wear in order to installation the wire rope that pin is fixedly fastened core barrel, the groove that opposite side is milled with a 60 * 14mm is used for steel wire disk in groove, and the large sulculus in trajectory both sides replaces rotation according to odevity.Selector 9 adopts the multi-functional selector that automatically resets.

Claims

1. combined type corer is by helmet (1), small shell (2), wire circlip (3), unlinked in little minute (4), large minute unlink (5), the upper chain of rings (6), the lower chain of rings (11), top connection (7), center tap (12), lower contact (16), retaining ring (8), pressure-proof outer cover (10), selector (9), main body (13), wear pin (14), compressing tablet (15), little shell (17), thread protector (18), 28 core plugs (19), 45 core plugs (20), 45 core sockets (21) form, and it is characterized in that, on main body (13), the below is welded with respectively center tap (12) and lower contact (16), 45 core plugs (20) are housed in center tap (12), 28 core plugs (19) are housed in lower contact (16), and center tap (12) is by wire circlip (3), large minute unlink (5), unlinked in little minute (4) be connected with pressure-proof outer cover (10) with the upper chain of rings (6), the internal thread of pressure-proof outer cover (10) upper end is connected with top connection (7), top connection (7) upper end is by wire circlip (3), large minute unlink (5), unlinked in little minute (4), the upper chain of rings (6) is connected with helmet (1), lower contact (16) lower end is connected with little shell (17) with screw thread, and little shell (17) internal thread is connected with thread protector (18), 36 trajectories on main body (13) are by the 1-36 core of higher temperature line and 45 core plugs (20), the 41-45 core of 45 core plugs (20) is connected with 1,2,6,7,8 cores of 28 core plugs (19) respectively, wear pin (14) and vertically be inserted in main body (13) both sides, push down with two compressing tablets (15), be used for fixing the wire rope of wearing core barrel, be provided with selector (9) in pressure-proof outer cover (10), selector (9) top is connected with small shell (2) by higher temperature line, the below is connected with center tap (12) by 45 core sockets (21), is provided with retaining ring (8) above selector (9).

2. combined type corer according to claim 1, it is characterized in that, vertically be evenly equipped with 36 trajectories on main body (13), core barrel is housed respectively in each trajectory, each below, trajectory contact is drilled with respectively Φ 8mm closed hole, be provided with the sealed wiring post in closed hole, prap is provided with sealing ring, press polyetheretherketonematerials materials as insulation outside the trajectory contact, each trajectory one side milling has the groove of a 25 * 5mm to wear the wire rope of pin dead bolt core barrel in order to installation, the groove that opposite side is milled with a 60 * 14mm is used for steel wire disk in groove, the large sulculus in trajectory both sides replaces rotation according to odevity.