CN2649765Y - Ground controllable underground adjustable elbow connection - Google Patents

Abstract

The utility model discloses a ground controllable and underground adjustable bent joint used in drill construction of an oil field directional well, wherein the bent joint has an upper and a lower bodies which are made into an inclined planes and glue with each other, and the upper and lower inclined planes are made to turn relatively with a certain angle in the circumference by means of the reactive torque of the powering drilling tool and form a camber; a controllable assemble gear composed of upper and lower axial gear collar and a radial gear on a hoisting frame are provided at the top half of the bent joint, wherein a hoisting frame is connected with the armature of electromagnet through a pull-rod. To solve the problem that because the underground drilling tools must be dug up and put in underground after a change of the camber, the period of drilling construction is prolonged; manpower and the financial resources are wasted; the hidden trouble of drilling construction accident is increased, the upper and lower gear collars of the assemble gear turn a certain angle and change the camber with the function of the reactive torque of the electromagnet and the powering drilling tool. The utility model can be widely used in drilling construction of directional wells like extended reach wells, cluster wells, Multi-lateral wells and horizontal wells.

Description

Controlled down-hole, ground adjustable bent sub

Technical field:

The utility model relates to a kind of oil field directional well drilling working " controlled down-hole, ground adjustable bent sub ".

Background technology:

Present domestic oil field will be inserted elbow in the bottom drill tool when directional well drilling is constructed, and can get out the track well of different curvature like this.Early stage right to use bent sub is the fixing drill collar pipe nipple of camber, generally is connected between power drilling tool and the non magnetic drill collar, and the directional MWD instrument is housed in non magnetic drill collar.This bent sub needs to change the bent sub of different cambers in the construction of different curvature track well.Therefore, need to prepare the bent sub of a plurality of different cambers.Another is a curved housing of the power drilling tool shell being made certain camber, can save bent sub like this, but it will prepare the curved housing power drilling tool of a plurality of different cambers equally.Because a kind of ground adjustable bent sub has appearred in development in science and technology, and this bent sub can access multiple camber with a kind of specification, its available bent sub replaced a plurality of different bent subs could satisfy construction requirement so afterwards.But, said fixing bent sub and curved housing power drilling tool and ground adjustable bent sub all exist common shortcoming, want to change a camber, all must all trip out ground (trip-out) to down-hole equipment, (bore down) under the lower going-into-well again after the conversion camber and can continue construction.Each like this, time brill will increase the wellbore construction cycle, waste of manpower, and material power has also increased the accident potential of wellbore construction.

The utility model content:

In order to overcome the shortcoming of above-mentioned bent sub, the utility model provides a kind of " controlled down-hole, ground adjustable bent sub ", and using it is adjustable camber, need not pull out of hole again, is that a kind of ground can be controlled, the down-hole adjustable bent sub of the adjustable camber in down-hole.

The technical scheme that its technical problem that solves the utility model adopts is: divide upper and lower two bodies with this bent sub, the upper and lower body work plane is made into the mutual card in inclined-plane and closes.When upper and lower two bodies turn over certain angle relatively on circumference, upper and lower body will form camber in the axial direction.The power that circumferencial direction rotates is from the reaction torque of power drilling tool.The first half of bent sub is formed one group of combination tooth by the radial teeth on circumference on axial upper ring gear and lower ring gear and the hoisting frame, expansion schematic diagram by this combination tooth is found out, relative 2 facewidth distances that stagger of tooth of upper ring gear and lower ring gear, under the reaction torque effect, they turn over identical angle simultaneously.Hoisting frame top is connected with electromagnet armature by pull bar, and electromagnetic coil work is controlled by steering tool.When needs are transferred camber, parameter is set on ground instrument, reach the down-hole by cable, the action of control electromagnet makes on the radial teeth in the combination tooth and carries or transfer, then under the reaction torque effect of power drilling tool, the upper and lower gear ring of combination tooth turns over certain angle, and camber is changed.The connection and the operating principle of these each component of adjustable bent sub are: electromagnet contains coil by suction and skeleton, iron core and armature are formed, and filler ring and anti-rotation alignment pin play the coil rack positioning action, and the location ring key makes the armature location.Armature resets and is made up of back-moving spring and spring positioning sleeve.Armature moves upward when coil electricity, is contained by being inhaled, and the while back-moving spring is compressed, and behind coil blackout, back-moving spring moves downward armature to reset, and electromagnet inside is filled with the high temperature lubricating oil by oil-filled plug, is provided with O RunddichtringO B on oil-filled plug.Internal pressure is by pressure balance packing element and well liquid balance.The pressure balance packing element is tied up with stainless steel wire; Pull bar is connected with hoisting frame with woodruff key by screw.Luffer boards link to each other with the luffer boards screw and form an openable side mouth, operation usefulness when being used for pull bar is connected with hoisting frame; Bearing support top links to each other with oil-filled joint (both sides are provided with O RunddichtringO A), and the bottom is by outside axial tooth and last oblique tube engagement, by inner axial tooth and hoisting frame engagement.Upper ring gear and lower ring gear are spacing with the radial teeth of hoisting frame in inside, externally have spline tooth to be meshed with the transmission gear ring, and are meshed with driving head with axial tooth in the bottom of transmission gear ring.Driving head inner tighten with the location barrel make the declivity tube with on tiltedly two inclined-planes be close to and lump together.The inside of declivity tube is provided with two pairs of female splines, female spline in upper end and driving head engagement, female spline in lower end and crossover sub engagement, the crossover sub bottom links to each other with the power drilling tool screw thread by the drill collar button, wherein the spline tooth of crossover sub is closeer, to pass tool consistent with curved direction and establish in order to adjust power, and be connected on the declivity tube by fastening bolt; The reaction torque of power drilling tool is to pass on the hoisting frame by crossover sub, declivity tube, driving head, transmission gear ring, upper ring gear and lower ring gear, and tool will reach bearing support and last oblique tube balances each other and hoisting frame will instead be turned round.When carrying on the hoisting frame or transferring, the following part of upper and lower gear ring and transmission gear ring all will turn over certain angle under reaction torque, wherein the effect of pressure ring (in be provided with the O RunddichtringO) is to locate upper and lower gear ring usefulness when assembling, and the O RunddichtringO plays the sealing of friction location and uses.

The beneficial effects of the utility model are, it does not have need pull out of hole, descend brill, adjustable camber, be that a kind of ground can be controlled, the down-hole adjustable bent sub of the adjustable camber in down-hole uses this bent sub, that can reduce drilling tool plays, bores down number of times, help reducing the generation of drilling failure, shorten completion period, reduce drilling cost.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model overall structure epimere schematic diagram.

Fig. 2 is the utility model overall structure hypomere schematic diagram.

Fig. 3 is a bent sub drilling tool structure schematic diagram.

Among the figure 1, pull-in winding, skeleton and iron core, 2, filler ring, 3, the location ring key, 4, the spring positioning sleeve, 5, oil-filled joint, 6, the O RunddichtringO, 7, back-moving spring, 8, the oiling plug, 9, pull bar, 10, stainless steel wire, 11, the pressure balance packing element, 12, the luffer boards screw, 13, luffer boards, 14, bearing support, 15, hoisting frame, 16, pressure ring, 17, upper ring gear, 18, lower ring gear, 19, the transmission gear ring, 20, go up tiltedly tube, 21, driving head, 22, the declivity tube, 23, the location barrel, 24, crossover sub, 25, fastening bolt, 26, woodruff key, 27, screw, 28, the anti-rotation alignment pin, 29, armature, 30, non magnetic drill collar, 31, steering tool, 32, bent sub, 33, power drilling tool, 34, drill bit.

The specific embodiment:

At Fig. 1, among Fig. 2, this adjustable bent sub is to contain coil by suction, skeleton and iron core 1, filler ring 2, location ring key 3, spring positioning sleeve 4, oil-filled joint 5, O RunddichtringO 6, back-moving spring 7, oiling plug 8, pull bar 9, stainless steel wire 10, pressure balance packing element 11, luffer boards screw 12, luffer boards 13, bearing support 14, hoisting frame 15, pressure ring 16, upper ring gear 17, lower ring gear 18, transmission gear ring 19, go up tiltedly tube 20, driving head 21, declivity tube 22, location barrel 23, crossover sub 24, fastening bolt 25, woodruff key 26, screw 27, anti-rotation alignment pin 28, armature 29, non magnetic drill collar 30, steering tool 31, bent sub 32, power drilling tool 33, drill bit 34 is formed; This down-hole adjustable bent sub is fitted by two body inclined-planes up and down and is formed; Suction contains coil, skeleton and iron core 1 are to be connected with anti-rotation alignment pin 28 with filler ring 2, pull bar 9 is connected with armature 29 usefulness location ring key 3, back-moving spring 7 support spring positioning sleeves 4 and pull bar 9 are used in the oiling plug 8 that its front end is provided with O RunddichtringO 6 and are screwed on the oil-filled joint 5, oil-filled joint 5 is connected with pressure balance packing element 11 usefulness stainless steel wires 10, luffer boards 13 usefulness luffer boards screws 12 are screwed on the bearing support 14, with woodruff key 26 hoisting frame 15 and pull bar 9 are hooked together, and with the pressure ring 16 that the lower end is provided with O RunddichtringO 6 screw 27 is tightened, bearing support 14 lower ends are inner to link to each other with hoisting frame 15 with axial bond; Bearing support 14 lower ends are outside to link to each other with last oblique tube 20 with axial bond, pressure ring 16 is pushed down in bearing support 14 lower surfaces, pressure ring 16 and 19 screwed connections of transmission gear ring, upper ring gear 17, lower ring gear 18 and transmission gear ring 19 are for being rigidly connected, transmission gear ring 19 is connected for tooth with driving head 21, driving head 21 upper and lower sides are equipped with O RunddichtringO 6, go up oblique tube 20 and lean on driving head 21 and location barrel 23 to tighten for fitting with declivity tube 22, declivity tube 22 is connected for axial tooth with crossover sub 24 and is radially tightening with fastening bolt 25.

In Fig. 3, steering tool 31 is put into non magnetic drill collar 30, non magnetic drill collar 30 and bent sub 32 screwed connections, power drilling tool 33 and drill bit 34 screwed connections.

Claims (1)

1, controlled down-hole, a kind of ground adjustable bent sub, by pull-in winding, skeleton and iron core (1), filler ring (2), location ring key (3), spring positioning sleeve (4), oil-filled joint (5), O RunddichtringO (6), back-moving spring (7), oiling plug (8), pull bar (9), stainless steel wire (10), pressure balance packing element (11), luffer boards screw (12), luffer boards (13), bearing support (14), hoisting frame (15), pressure ring (16), upper ring gear (17), lower ring gear (18), transmission gear ring (19), go up tiltedly tube (20), driving head (21), declivity tube (22), location barrel (23), crossover sub (24), fastening bolt (25), woodruff key (26), screw (27), anti-rotation alignment pin (28), armature (29), non magnetic drill collar (30), steering tool (31), bent sub (32), power drilling tool (33), drill bit (34) is formed, and it is characterized in that: this down-hole adjustable bent sub is fitted by two body inclined-planes up and down and is formed; Suction contains coil, skeleton and iron core (1) are to be connected with anti-rotation alignment pin (28) with filler ring (2), pull bar (9) is connected with location ring key (3) with armature (29), back-moving spring (7) support spring positioning sleeve (4) and pull bar (9) are used in the oiling plug (8) that its front end is provided with O RunddichtringO (6) and are screwed on the oil-filled joint (5), oil-filled joint (5) is connected with stainless steel wire (10) with pressure balance packing element (11), luffer boards (13) are screwed on the bearing support (14) with luffer boards screw (12), with woodruff key (26) hoisting frame (15) and pull bar (9) are hooked together, and with the pressure ring (16) that the lower end is provided with O RunddichtringO (6) screw (27) is tightened, bearing support (14) lower end is inner to link to each other with hoisting frame (15) with axial bond; Bearing support (14) lower end is outside to link to each other with last oblique tube (20) with axial bond, pressure ring (16) is pushed down in bearing support (14) lower surface, pressure ring (16) and transmission gear ring (19) screwed connection, upper ring gear (17), lower ring gear (18) and transmission gear ring (19) are for being rigidly connected, transmission gear ring (19) is connected for tooth with driving head (21), driving head (21) upper and lower side is equipped with O RunddichtringO (6), go up oblique tube (20) and lean on driving head (21) and location barrel (23) to tighten for fitting with declivity tube (22), declivity tube (22) is connected for axial tooth with crossover sub (24) and is radially using fastening bolt (25) to tighten; Steering tool (31) is put into non magnetic drill collar (30), non magnetic drill collar (30) and bent sub (32) screwed connection, power drilling tool (33) and drill bit (34) screwed connection.

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