CN2700555Y - Wet joint of measurement while drilling instrument - Google Patents

Abstract

The utility model relates to a wet joint of measurement while drilling instrument for petroleum drilling, containing of two part of an upper and a lower joints which are butt jointed from top to bottom, the upper joint is composed of an outer cylinder 1, an electrode screwed cap 2, a sealed electrode 3, an insulating ring 4, an outer sealed gasket 5, an inner sealed gasket 6, a compressed spring 9, a rubber cylinder 10, a clamping ring 11, a movable head 12, an insulating cylinder 13, a backing ring 14, a sealed ring 15 and a positioning guiding cylinder 16; the lower joint is composed of a movable thimble 17, an insulating sleeve 18, a thimble spring 19, a fastening screw 20, an insulating shock insulator 21, a winged outer cylinder 22, an insulating outer sleeve 23 and a push rod 24. When the joints are used for the wire while drilling instrument, the joints can not repeatedly sit keys and realizes the drilling conversion; when the joints are used for wireless while drilling instrument, the fishing parts are fished out to reduce the losses; and when the joints are used for the data storage measurement instrument, the frequency of pulling out the drilling can be reduced.

Description

Drilling well steering tool wet joint

Technical field:

The utility model relates to a kind of link that is used for the oil drilling device for subsurface measuring, belongs to oil drilling downhole instrument device class.

Background technology:

At present, in oil drilling measurement while drilling process, mainly adopt several measurement while-drilling instruments such as wired drilling measuring instrument, wireless drilling measuring instrument, data-storing formula general measuring instrument.The wired drilling instrument needs instrument is tripped out when rotary drilling, and when recovering slide drilling, instrument will repeat to sit key operation, and the wireless drilling instrument that reliability is high then can not be pulled out often, when drilling failure takes place, loses bigger.For data-storing formula downhole instrument, after must pulling out of hole by the time, its data that measure take out instrument, just can read, make data obtain time lag, and need to increase the trip-out number of times, be unfavorable for carrying out smoothly of drilling well measurement while drilling process.

Summary of the invention:

The purpose of this utility model is to provide a kind of key operation that needn't repeat to sit when being used for the wired drilling instrument, can pull out dragging for part when being used for the wireless drilling instrument and accident occurring, reduce causality loss, be used for the drilling well steering tool wet joint that data-storing formula downhole instrument can reduce the trip-out number of times.

The utility model is to realize like this.This kind wet joint comprises top connection (female joint) and lower contact (male joint) two parts of upper and lower butt joint, and the centre of the two is for connecting and composing the electric path of single-core cable with conducting metal.Wherein, the top connection outside constitutes shell by urceolus and location guiding tube, the middle position of practising constitutes single core electric path by electrode nut, enclosed electrode, stage clip, movable head, is made of the dynamic insulation main body of equilibrium pressure, dynamic seal (packing) between outside and the centre insulating cylinder, joint ring, rubber tube.The lower contact centre constitutes single core electric path by push rod, thimble spring, movable thimble, and skin constitutes insulating layer by insulating coating, insulation sleeve, and most external is to have the wing urceolus of setting upright and can salvaging function.When this kind wet joint and wired drilling measuring instrument are used, top connection upper end with in establish single-core cable extension bar be connected, the extension bar upper end is connected with cable then, and lower contact directly is connected with measuring instrument, is lowered in the pit shaft with drill collar and can carries out measurement while drilling work.When this wet joint and wireless drilling instrument are used, top connection with can drag for part and link to each other, lower contact partly links to each other with can not dragging for.When this wet joint and data-storing formula instrument were used, top connection linked to each other with the extension bar of built-in single-core cable, and the extension bar upper end is connected with cable again, and lower contact then directly links to each other with data-storing formula instrument.

The utility model is reasonable in design, reliable operation, can not repeat to sit key when being used for the wired drilling instrument realizes sliding and creeps into conversion with rotary drilling, can pull out dragging for part when being used for the wireless drilling instrument, reduce the loss, can trip out well head when being used for the data-storing measuring instrument and just can read data, reduce the trip-out number of times, increase work efficiency.This kind wet joint can be used for multiple steering tool, and result of use is good, is suitable for and applies.

Description of drawings:

Fig. 1 is the utility model top connection part-structure schematic diagram.

Fig. 2 is the lower contact structural representation.

Fig. 3, Fig. 4, Fig. 5 are respectively the utility model and wired drilling measuring instrument, wireless drilling measuring instrument, the installment state schematic diagram when data-storing formula measuring instrument is used.

The specific embodiment: enforcement of the present utility model is illustrated below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, the utility model comprises upper and lower joint two parts, and top connection is made up of urceolus 1, electrode nut 2, enclosed electrode 3, dead ring 4, exterior seal ring 5, inner seal ring 6, stage clip 9, rubber tube 10, banding circle 11, movable head 12, insulating cylinder 13, gasket ring 14, joint ring 15, orientation direction tube 16; Lower contact is made up of movable thimble 17, insulation sleeve 18, thimble spring 19, holding screw 20, insulation dottle pin 21, wing urceolus 22, insulating coating 23, push rod 24.Its structure assembled relation is as follows: top connection urceolus 1 lower end is connected with orientation direction tube 16 with screw thread, is provided with enclosed electrode 3 in the urceolus 1, and tighten with electrode nut 2 its upper end, and inner seal ring 6 is housed in the lower seal groove, and the below is provided with stage clip 9 and movable head 12; Enclosed electrode 3 outsides are set with dead ring 4 and insulating cylinder 13, in dead ring 4 seal grooves exterior seal ring 5 are housed; Insulating cylinder 13 middle parts are set with rubber tube 10, and tighten with banding circle 11; Gasket ring 14 and two " worker " font joint rings 15 are housed in insulating cylinder 13 lower ends; The wing urceolus of lower contact 22 tops are provided with insulating coating 23, are provided with push rod 24 in it; Wing urceolus 22 bottoms are provided with insulation sleeve 18, and thimble spring 19 is housed in it, and spring 19 belows are provided with movable thimble 17, are provided with insulation dottle pin 21 between insulation sleeve 18 and push rod 24 lower ends, and dottle pin 21 tightens with push rod 24 usefulness screws 20.When upper and lower joint docks, the push rod 24 on lower contact top inserts in the top connection and with movable head 12 and realizes the electric connection of single core, 16 in the positioning and guiding tube of top connection lower end is sitting in axial location on the inclined-plane of the wing urceolus 22 of lower contact, the sealing that closely cooperates of the two seals ring 15 of lower contact insulating coating 23 and top connection simultaneously, well liquid inside and outside isolating.Wherein, urceolus 1 is the cylinder that a upper and lower end has negative thread respectively, and its top inner headed face is provided with the hollow round table that enclosed electrode 3, dead ring 4, insulating cylinder 13 usefulness are set, and is uniformly distributed with intercommunicating pore 7 on the periphery of middle part along the circumference.Insulating cylinder 13 is the big hollow cylindrical body of the little lower diameter of a upper diameter, adopts insulation materials to make, and its upper and lower part inner headed face matches with placing enclosed electrode 3 and gasket ring 14 in it respectively, has intercommunicating pore 8 on the barrel of middle part.Two joint rings 15 are " worker " font, work to isolate inside and outside well liquid.Big path is made in wing urceolus 22 upper ends, and its thinner neck is convenient to look for and is dragged for, and bloat wing is made at the middle part, and the positioning and guiding tube 16 of top connection bottom is sitting in axial location on its wing inclined-plane when being convenient to the butt joint of upper and lower joint.Among Fig. 3, label 2-1 is a cable, and 2-2 is a non magnetic drill collar, and 2-3 is an extension bar, and 2-4 is the top connection of this wet joint, and 2-5 is the lower contact of this wet joint, and 2-6 is the wired drilling measuring instrument.Among Fig. 4,3-1 is a non magnetic drill collar, and 3-2 can drag for part for the wireless drilling measuring instrument, and 3-3 is the wet joint top connection, and 3-4 is lower contact, 3-5 for no magnetic stub boring quickly, 3-6 can not drag for part for the wireless drilling instrument.Among Fig. 5,4-1 is a drill collar, and 4-2 is a cable, and 4-3 is an extension bar, and 4-4 is top connection, and 4-5 is lower contact, and 4-6 is a general measuring instrument, and 4-7 is for measuring stub boring quickly.

Claims (1)

1, a kind of drilling well steering tool wet joint, comprise top connection, lower contact two parts, top connection is made up of urceolus (1), electrode nut (2), enclosed electrode (3), dead ring (4), exterior seal ring (5), inner seal ring (6), stage clip (9), rubber tube (10), banding circle (11), movable head (12), insulating cylinder (13), gasket ring (14), joint ring (15), orientation direction tube (16); Lower contact is made up of movable thimble (17), insulation sleeve (18), thimble spring (19), holding screw (20), insulation dottle pin (21), wing urceolus (22), insulating coating (23), push rod (24), it is characterized in that: top connection urceolus (1) lower end is connected with orientation direction tube (16) with screw thread, be provided with enclosed electrode (3) in the urceolus (1), tighten with electrode nut (2) its upper end, inner seal ring (6) is housed in the lower seal groove, and the below is provided with stage clip (9) and movable head (12); Enclosed electrode (3) outside is set with dead ring (4) and insulating cylinder (13), in dead ring (4) seal groove exterior seal ring (5) is housed; Insulating cylinder (13) middle part is set with rubber tube (10), and tightens with banding circle (11); Gasket ring (14) and two " worker " font joint rings (15) are housed in insulating cylinder (13) lower end; The wing urceolus of lower contact (22) top is provided with insulating coating (23), is provided with push rod (24) in it; Wing urceolus (22) bottom is provided with insulation sleeve (18), thimble spring (19) is housed in it, spring (19) below is provided with movable thimble (17), is provided with insulation dottle pin (21) between insulation sleeve (18) and push rod (24) lower end, and dottle pin (21) tightens with screw (20) with push rod (24).

Images