CN102852478B - Centralizing string and restoring string for horizontal well casing pipe dislocation and restoring process of centralizing string and restoring string - Google Patents
Centralizing string and restoring string for horizontal well casing pipe dislocation and restoring process of centralizing string and restoring string Download PDFInfo
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- CN102852478B CN102852478B CN201210329397.XA CN201210329397A CN102852478B CN 102852478 B CN102852478 B CN 102852478B CN 201210329397 A CN201210329397 A CN 201210329397A CN 102852478 B CN102852478 B CN 102852478B
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Abstract
The invention discloses a centralizing string and a restoring string for horizontal well casing pipe dislocation and a restoring process of the centralizing string and the restoring string so as to solve the problem that existing dislocation wells with the casing pipe dislocation and inner diameter coincidence degree ranging from 30-50% in an oil field are incapable of being centralized and restored. The centralizing string comprises a booster, a hydraulic anchor and an oil pipe, and an eccentricity centralizing hanger, the booster and the hydraulic anchor are sequentially connected through the oil pipe. The restoring string matched with the centralizing string in use comprises an oil pipe and a casing pipe restoring tool which are connected, an insertion pipe is connected at the bottom of a cylinder of the casing pipe restoring tool, and a casing pipe is inserted into an outer positioning cylinder of the eccentricity centralizing hanger. The restoring process is particularly applicable to thermal recovery horizontal well casing pipe dislocation restoring works and similarly applicable to other casing pipe dislocation horizontal wells. The centralizing string and the restoring string and the restoring process can be used for effectively restoring the dislocation casing pipe at a horizontal segment of the horizontal well, have no chemical pollution to an oil layer and are wide in application range, simple in construction steps and capable of effectively reducing production cost.
Description
Technical field
The present invention relates to oilfield horizontal well casing-broken fix tool and technology, especially horizontal well casing pipe bad break sets right tubing string and repair tubing string and renovation technique thereof, solves oil field current casing-broken internal diameter coincidence degree and is in the difficult problem that the broken well between 30-50% cannot set right and repair.
Background technology
Because horizontal well technology is in the large-scale promotion in oil field, the supporting governing problem of thing followed horizontal well also seems and becomes increasingly conspicuous, and way and the instrument of wherein tackling horizontal well casing pipe bad break problem are supporting also not comprehensive.The difficult point of horizontal well casing pipe bad break problem is more, but is mainly divided into four aspects, and one is that diameter enlarging and reparation tubing string enter technology down again; Two is problems that complete correction bad break cross section makes it have compared with the long life; Three is will have larger interior latus rectum after repairing, and makes it be convenient to apply various measure in production operation from now on; Four is reduce the pollution to oil reservoir.The method of current reparation broken well in straight well goes out front end and add cementing tool with boring materials processing with the conical guide shoe of large chamfering, the sleeve pipe of tube post gravity to bottom bad break sets right, adopt the method for squeeze method to be fixed by bad break sleeve pipe afterwards, then fall cement and corrector at brill.If this kind of method is applied in horizontal segment very easily polluted reservoir, cause permanent irreversible injury.And tubing string easily pauses bad by tubing string in the process of lower.Therefore, this kind of technique is seldom applied in when repairing horizontal well; Another method adopts the mode hanging tail pipe, if application number is described in a kind of casing-broken well repair tubular column of 201020549366.1, top adopts hanger, adopt tapered guide shoe below, by blank tubing compressive-shear connection breaking shear pin after having constructed, this kind of method does not carry out complete correction to bad break place, after construction, larger gap is left in bottom, oil well still can shake out, moreover hanger internal diameter comparatively small-scale production tubing string undergauge is obvious, rocking of also having bottom bad break sleeve pipe to produce because of production had a great impact the suspension life-span of hanger.Therefore, be difficult in this method actual production repair horizontal segment bad break sleeve pipe; In addition, the scheme having people once to adopt two steps to walk, carries out well workover.First the wedge angle guide shoe that same fix tool external diameter is equally large is entered down, without special corrector, bottom bad break sleeve pipe is set right, look at the size of To Axial Force Needed, as To Axial Force Needed not quite then enters expansion tube fix tool down, again sleeve pipe is set right, carry out expand tube afterwards, finally enter down bit drills again and fall residual base.So not only take time and effort, and easily occur new problem in brill plug process, as reparation pipe displacement landing etc.
Also all there is a unquestionable problem in above-mentioned several method in addition, be exactly all can only use for the situation that casing-broken degree is lower, namely upper and lower section overlaps and exceedes 50% of casing inner diameter, to overlap the problem that then cannot accurately judge because of bad break orientation at the well of casing inner diameter 30-50% and helpless to the upper and lower section of sleeve pipe.Therefore, existing restorative procedure and instrument no longer applicable in the more horizontal well of bad break, be badly in need of a set of complete function of development, it is wide and just seem particularly important to the little horizontal segment bad break casing repairing technique of oil layer pollution and kit to repair object range.
Summary of the invention
The object of this invention is to provide horizontal well casing pipe bad break to set right tubing string and repair tubing string and renovation technique thereof, solve oil field current casing-broken internal diameter coincidence degree and be in the difficult problem that the broken well between 30-50% cannot set right and repair.When net horizontal section generation casing-broken, carry out detection analyze bottom bad break sleeve pipe, after determining casing failure degree and disconnection orientation, then running string carries out setting right and repairing.Bad break horizontal well is made to continue to produce.
Technical solution of the present invention is:
The horizontal well casing pipe bad break tubing string that sets right comprises booster, hydraulic anchor and oil pipe, and set right hanger, booster of bias is connected by oil pipe from bottom to top successively with hydraulic anchor.
With horizontal well casing pipe bad break set right tubing string with the use of horizontal well casing pipe bad break repair tubing string and comprise oil pipe and casing repairing instrument, oil pipe is connected with casing repairing instrument, at the cylinder body bottom connecting insertion of casing repairing instrument, this intubate inserts eccentric setting right in the location urceolus of hanger.
Set right tubing string and horizontal well casing pipe bad break of horizontal well casing pipe bad break repairs the casing-broken renovation technique of tubing string, and its processing step is as follows:
A, by mechanical type horizontal well casing pipe bad break eccentric positioning detector, detection is carried out to casing-broken orientation and degree and determine;
B, the tubing string that sets right prepare before going into the well: according to down-hole casing bad break orientation before going into the well, first counter weight strip is installed, the bias of tubing string of setting right is regulated to set right the eccentric detent mechanism of hanger, just to the coincident central of bottom bad break sleeve pipe when making the vertex (vertices) of target seeker static under gravity;
C, under enter to set right tubing string, set right bad break sleeve pipe;
D, hydraulic anchor hang the tubing string that sets right;
E, under enter to repair tubing string and press down deblocking bias and to set right hanger;
F, continuing to transfer reparation tubing string, by casing-broken cross section, by repairing tubing string, the well part of staying of the tubing string that sets right being pushed down-hole;
G, use casing repairing instrument carry out the repair at casing-broken place.
The present invention has following significant effect and advantage.
1, provide the method that horizontal well casing pipe bad break is repaired, change horizontal well horizontal segment in the past and just again can only beat the unfavorable situation of sidetracked hole once generation bad break, supporting horizontal workover process, makes it more perfect;
2, special-purpose assorted tubing string and the instrument of renovation technique is provided, as booster, bias are set right hanger and hydraulic anchor.
3, utilize booster to provide to set right the power of tubing string, avoid the risk utilized under tubing string gravity immediately, and booster has secondary plays compression functions, after the relief hole of booster is closed, still can transmit hydraulic pressure forward;
4, utilize the machine tool bias hanger that sets right temporarily to fix bottom bad break sleeve pipe, avoid with chemical classes product the pollution of oil reservoir;
5, the bias hanger that sets right is utilized to set right to bottom bad break sleeve pipe and temporarily fix, after the intubate of repairing tubing string inserts the work urceolus of the eccentric hanger that sets right, its casing-broken repair cylinder external diameter repairing tubing string is identical with the external diameter of the eccentric hanger that sets right.Now press down tubing string, bias is set right the automatic deblocking of hanger, and casing repairing instrument b1 can smoothly by casing-broken place. and avoid prior art two step and walk in technique, cannot effectively to fix after bad break sleeve pipe sets right and follow-up tubing string cannot by the problem of bad break mouth;
6, utilize hydraulic anchor to provide anchorage force when needing fixing for the tubing string that sets right, simultaneously when tubing string needs activity with pressure, effectively can close anchor fluke and discharge the tubing string that sets right.
Method of the present invention and special tool can be applicable to any one horizontal well casing pipe bad break reinstatement works, comprise submarine well, platform well, land well.The present invention is particularly useful for horizontal well thermal recovery casing-broken reinstatement works, but is equally applicable to other casing-broken horizontal well.The inventive method and instrument effectively can be repaired the bad break sleeve pipe of horizontal well horizontal segment, and have to oil reservoir without chemical contamination, applied widely, and construction sequence is simple, effectively can set up down-hole horizontal section bad break sleeve opening place passage and repair.Reinstatement works again after bad break sleeve water horizontal well between the present invention effectively can be greater than former casing diameter to two sections sleeve pipe 30-50% in the cross section coincidence distance of incision position detects.Extend the application life of oil well to greatest extent, improve recovery ratio, effectively reduce cost of production.Save activity duration and cost of production compared with sidetracked hole, drastically increase the efficiency of well workover and the application life of oil well, improve single well yield significantly, expand the use rate of block, remarkable benefit, have larger popularization and application space.
Accompanying drawing explanation
Fig. 1 is that the present invention sets right the structural representation of tubing string.
Fig. 2 is that the present invention sets right the structural representation of the eccentric hanger that sets right in tubing string.
Fig. 3 is the structural representation that the present invention repairs tubing string.
Fig. 4 is the connection diagram that the present invention repairs tubing string middle sleeve bad break repair cylinder and intubate.
Detailed description of the invention
Below in conjunction with accompanying drawing in detail the present invention is described in detail.
The horizontal well casing pipe bad break tubing string that sets right comprises booster a2, hydraulic anchor a1 and oil pipe, and set right hanger a3, booster a2 of bias is connected by oil pipe from bottom to top successively with hydraulic anchor a1.Booster a2 provides the power of the bad break sleeve pipe that sets right for this tubing string, avoids the risk utilized under tubing string gravity immediately.When the weight that routine presses down tubing string cannot meet to set right power needed for the bad break sleeve pipe of bottom time, just booster a2 and hydraulic anchor a1 is driven to set right by hydraulic pressure, first hydraulic anchor a1 works fixing bottom tubing string, and then booster a2 carries out work for the front end bias hanger a3 that sets right provides the power of setting right to be set right by bottom bad break sleeve pipe.Drop into plug after setting right and close the relief hole of booster, make a whole set of tubing string again have bearing capacity, prepare anchor and hang bias and to set right hanger a3.
The bias hanger a3 that sets right comprises target seeker 25, and hydraulic anchor hang device and eccentric location setting device are connected by crossover sub 13; Hydraulic anchor hang device comprises setting detent mechanism and plug-in type solution sealing mechanism, and setting detent mechanism to be arranged in plug-in type solution sealing mechanism and to be connected by spacer pin 6; Be provided with counterweight in the inner circle of the spacing inner core 20 of circumference of bias location setting device and install vertical slot, it is built with counter weight strip, connects target seeker 25 in its lower end.Setting detent mechanism comprises location inner core 1, anchor cylinder top cover 2, locates at the bottom of inner core and block up 10 and spacing base ring 12, location inner core 1 is provided with location inner core inlet opening 8 and spacer pin inserts slotted eye, the bottom that 10 are sleeved on location inner core 1 is blocked up by the bottom of the inner core of location, be connected with location inner core 1 by stifled location, end shear pin 11, anchor cylinder top cover 2 is welded on the lower end of location inner core 1 with the top cylindrical screwed connection of locating inner core 1, spacing base ring 12.Plug-in type solution sealing mechanism comprises location urceolus 3, anchor cylinder 4, catch ring 5 and anchor cylinder support set 7, and the top cylindrical of location urceolus 3 is provided with anchor cylinder limited step and is connected step with catch ring, and its cylindrical shell is provided with spacer pin 6 and location urceolus inlet opening 9; Location urceolus 3 is connected by spacer pin 6 with location inner core 1, and anchor cylinder 4 is from bottom to top enclosed within the urceolus 3 of location, and catch ring 5 is connected step by screwed connection with the catch ring of location urceolus 3, and anchor cylinder support set 7 is from bottom to top enclosed within the urceolus 3 of location.The cylindrical shell of described anchor cylinder 4 is at least processed two lobe ratchets, its ratchet outer wall processes slip insert, each lobe ratchet bottom outer wall is provided with chamfering, form ratchet-type slips, the chamfer angle of each lobe ratchet bottom can depend on the circumstances, and ratchet-type slips structure is simple, in reliable operation.The top inner circle of catch ring 5 is provided with screw thread, bottom ring body process and assemble draw-in groove and special upper button tool matching; The top inner circle of anchor cylinder support set 7 is provided with spacer pin and snaps in annular groove, and this spacer pin snaps in annular groove and coordinates with spacer pin 6
; ?the both sides of location inner core inlet opening 8 and location urceolus inlet opening 9 are provided with sealing ring.Eccentric location setting device comprises target seeker 25, is connected eccentrically mounted weight detent mechanism between crossover sub 13 with target seeker 25, and the inner circle of the spacing inner core 20 of circumference of eccentrically mounted weight detent mechanism is at least provided with a counterweight and installs vertical slot, equipped counter weight strip in it.Many counterweights also can be set vertical slot is installed, be convenient to counterweight and regulate.Owing to having installed counter weight strip, when bias set right hanger a3 under enter net horizontal section after, its side that counter weight strip is housed is in below all the time, counterweight adjustment is carried out in the casing-broken orientation can determined according to early stage, accurately point to bottom bad break cannula cavity under gravity when making the vertex (vertices) of target seeker 5 static, exactly the vertex (vertices) of target seeker 25 is set right in the lower parts casing pipe of hanger a3 insertion bad break together with bias.Eccentrically mounted weight detent mechanism comprises circumferential spacing urceolus 16, circumferential spacing inner core 20, upper urceolus 17, lower urceolus 21 and positioning control office, the top cylindrical of upper top cylinder 14 and gingival cyst of mucous gland in the newborn are buckled cylinder 15 and are linked by gingival cyst of mucous gland in the newborn and connect, its underpart cylindrical and the screwed connection of circumference spacing inner core 20, be suspended on the location spline on circumferential spacing urceolus 16 inner circle step by gingival cyst of mucous gland in the newborn button cylinder 15; Circumference spacing urceolus 16 bottom cylindrical successively with upper urceolus 17 and the screwed connection of lower urceolus 21; Upper spheres 19 is arranged on circumferential spacing inner core 20 and trackslips in the ball installation vertical slot of step, and two ends are fixed by screw 18; The step that trackslips of spacing for circumference inner core 20 is pacified seat on the bottom inner circle step of upper urceolus 17; Between lower urceolus 21 and the spacing inner core 20 of circumference, positioning control office is installed.Positioning control office comprises spacing ring 23, spacing ring location shear pin 22, ball jacket 24 and lower spheres, and spacing ring 23 to be enclosed within outside circumferential spacing inner core 20 and to be connected with lower urceolus 21 by spacing ring location shear pin 22; The inner circle of ball jacket 24 is provided with screw thread, its cylindrical step is provided with ball and installs vertical slot, in-built lower spheres, by the bottom cylindrical screwed connection of ball jacket 24 with the spacing inner core 20 of circumference, is arranged on the below of spacing ring 23.The trackslip top cylindrical of step of the spacing inner core 20 of circumference is provided with location spline, and this location spline coordinates with the location spline on circumference spacing urceolus 16 inner circle step; The ball that the spacing inner core 20 of circumference trackslips on the step ball installed on vertical slot and ball jacket 24 cylindrical step is installed vertical slot and is at least provided with three, each configuration three groups of upper spheres 19 and lower spheres.Also can take other mechanical rolling structures herein, as: the spacing inner core of circumference 20 trackslip step and ball jacket 24 cylindrical step on be provided with ball install cannelure or the spacing inner core 20 of circumference trackslip step and ball jacket 24 cylindrical step on bearing is installed.The bottom inner circle screwed connection of the anchor cylinder support set 7 of crossover sub 13 top cylindrical and plug-in type solution sealing mechanism; Bottom inner circle and the eccentric top cylindrical screwed connection of locating the spacing urceolus 16 of setting device of crossover sub 13; Sealing ring is provided with at crossover sub 13 and the two ends of anchor cylinder support set 7 and spacing urceolus 16 junction; Target seeker 25 body is provided with axial relief hole, and its vertex (vertices) is wedge sharp structure.
Bias is set right the top cylindrical of target seeker 25 of hanger a3 and the bottom inner circle screwed connection of the spacing inner core 20 of circumference.Crossover sub 13 and the screwed connection of circumference spacing urceolus 16.Because the top cylindrical of upper top cylinder 14 and gingival cyst of mucous gland in the newborn are buckled cylinder 15 and are linked by gingival cyst of mucous gland in the newborn and connect, its underpart cylindrical and the screwed connection of circumference spacing inner core 20, and the step that trackslips of circumferential spacing inner core 20 pacifies seat on the bottom inner circle step of upper urceolus 17, its underpart inner circle screw thread is connected with target seeker 25 again, just makes top cylinder 14, gingival cyst of mucous gland in the newborn buckles cylinder 15, circumferential spacing inner core 20
,ball jacket 24 and target seeker 25 can freely rotate in the circumferential, make the vertex (vertices) of the target seeker 25 of the setting device lower end, bias location that counterweight is good accurately point to the inner chamber of bottom bad break sleeve pipe.
Setting-up eccentricity set right hanger a3 time, first several groups of upper spheres 19 are loaded in circumferential spacing inner core 20, the first-class screw 18 in two ends, upper top cylinder 14 is connected by screw thread with the spacing inner core 20 of circumference, upper urceolus 17 and the spacing urceolus of circumference 16 are enclosed within outside circumferential spacing inner core 20 from two ends respectively, upper urceolus 17 and the spacing urceolus 16 of circumference pass through screwed connection, gingival cyst of mucous gland in the newborn button cylinder 15 is enclosed between circumferential spacing inner core 20 and the spacing urceolus 16 of circumference from top to bottom, crossover sub 13 is by the spacing urceolus 16 of screwed connection circumference afterwards, lower urceolus 21 and spacing ring 23 are located after shear pin 22 is connected by spacing ring, screwed connection is passed through again with upper urceolus 17.Use special instrument by ball jacket 24 by the lower end of screwed connection to circumferential spacing inner core 20.
Hydrous water horizontal well casing-broken set right tubing string use horizontal well casing pipe bad break repair tubing string comprise oil pipe and casing-broken repair cylinder b 1, at the cylinder body bottom connecting insertion 26 of casing repairing instrument b1, this intubate 26 is inserted bias and is set right in the location urceolus 3 of hanger a3.The external diameter of the external diameter of casing repairing instrument b1 and the eccentric hanger a3 that sets right conforms to or establishes changeover portion to match with the external diameter of the eccentric hanger a3 that sets right in casing repairing instrument b1 lower outer diameter, makes reparation tubing string can smoothly by the bad break cross section of sleeve pipe; Described intubate 26 is screwed connection formulas or can salvaging type, and its body of rod lower end is circular or conical; The top cylindrical of the intubate 26 of screwed connection formula and the cylindrical shell lower end screwed connection of casing repairing instrument b1, locate the minor diameter fit of urceolus 3 in its underpart external diameter and the eccentric hanger a3 that sets right; The top of intubate 26 of salvaging type can be connected by the cylinder body bottom of joint with casing repairing instrument b1, in its underpart external diameter and the eccentric hanger a3 that sets right, locate the minor diameter fit of urceolus 3.
Use set right tubing string and horizontal well casing pipe bad break of horizontal well casing pipe bad break to repair the casing-broken renovation technique of tubing string, its processing step is as follows:
A, by mechanical type horizontal well casing pipe bad break eccentric positioning detector, detection is carried out to casing-broken orientation and degree and determine;
B, the tubing string that sets right prepare before going into the well: according to down-hole casing bad break orientation, first counter weight strip is installed, the bias of tubing string of setting right is regulated to set right the eccentric detent mechanism of hanger a3, just to the coincident central of bottom bad break sleeve pipe when making the vertex (vertices) of target seeker 25 static under gravity;
C, under enter to set right tubing string, set right bad break sleeve pipe: when going into the well, the hanger a3 that directly bias set right is connected on the bottom of the tubing string that sets right, arrive casing-broken position static a period of time, about 20-50 minute, makes the downward transfixion of circumference spacing inner core 20 center of gravity of freely rotating.After pressing down the certain tonnage of the tubing string that sets right afterwards, spacing ring location shear pin 22 is cut off, and the circumferential spacing inner core 20 certain distance location spline making to trackslip above step that bounces back enters into location spline on circumferential spacing urceolus 16 inner circle step.Now upper top cylinder 14 is buckled on cylinder 15 along gingival cyst of mucous gland in the newborn and is slided to location inner core 1 bottom end, and at this moment the front portion of eccentric location setting device is not easily skidded off by circumference is spacing from the lower parts casing pipe of bad break.Then the tubing string that sets right continues the lower parts casing pipe pressed down bad break and sets right.If the weight that routine presses down tubing string cannot meet when to set right power needed for the bad break sleeve pipe of bottom, first hydraulic anchor a1 works fixing bottom tubing string, and then booster a2 carries out work for the front end bias hanger a3 that sets right provides the power of setting right to be set right by bottom bad break sleeve pipe.After bias sets right hanger a3 arrival desired depth, can hang by hydraulic anchor.
,hydraulic anchor hangs the tubing string that sets right: highly pressurised liquid is entered by location inner core inlet opening 8 and location urceolus inlet opening 9, promote anchor cylinder support set 7 up, make anchor cylinder support set 7 promote anchor cylinder 4 ratchet-type slips distending, be outwards stuck on sleeve pipe tubing string bad break mouth upper sleeve inwall, the spacing spacer pin that enters that spacer pin 6 loses anchor cylinder support set 7 snaps in annular groove.Now upper lifting pipe post can will location inner core 1, anchor cylinder top cover 2, location inner core at the bottom of block up 10 and spacing base ring 12 form setting detent mechanism carry to ground.Now the sleeve pipe of bottom bad break is temporarily fixed, and enters to repair tubing string deblocking down more afterwards.
,under enter to repair tubing string and press down deblocking bias and to set right hanger a3; Under the reparation tubing string front end that enters intubate 26 is installed, be inserted into bias set right hanger a3 plug-in type solution sealing mechanism location urceolus 3 inner chamber in, the step repairing tubing string front end intubate 26 is stuck in urceolus 3 place, location, makes contact position seamless.Now press down intubate 26, it is descending that its step promotes location urceolus 3, anchor cylinder 4 makes it along location urceolus 3 outer wall relative lower slider because of card envelope power, and it is descending that catch ring 5 promotes anchor cylinder support ring 7, makes the ratchet-type slips of anchor cylinder 4 reclaim deblocking because losing the limited support of anchor cylinder support ring 7.
F, continue to transfer reparation tubing string, by casing-broken cross section: because the front end intubate 26 of repairing tubing string is seamless with the contact position of location urceolus 3, therefore repair tubing string and smoothly by casing-broken place, by reparation tubing string, the well part of staying of the tubing string that sets right can be pushed down-hole.
G, use casing repairing instrument b1 carry out the repair at casing-broken place.
After h, reparation, if use the intubate 26 of screwed connection formula, just entering in casing repairing instrument b1 under brill plug tubing string, bore the linkage section of intubate 26, or intubate 26 shackle, disconnect the connection with casing repairing instrument b1, shift stay well part and letting-in tool in the sleeve pipe tubing string of bottom onto shaft bottom.Can the intubate 26 of salvaging type if used, casing repairing instrument b1 is proposed ground, under enter fishing string and intubate 26 is pulled out by fishing tool, then shift stay well part and the letting-in tool in the sleeve pipe tubing string of bottom onto shaft bottom, produce in order to avoid hinder in the future.
Claims (11)
1. horizontal well casing pipe bad break sets right tubing string, comprises booster (a2), hydraulic anchor (a1) and oil pipe, it is characterized in that, set right hanger (a3), booster (a2) of bias is connected by oil pipe from bottom to top successively with hydraulic anchor (a1); The bias hanger (a3) that sets right comprises target seeker (25), and hydraulic anchor hang device and eccentric location setting device are connected by crossover sub (13); Hydraulic anchor hang device comprises setting detent mechanism and plug-in type solution sealing mechanism, the location inner core (1) of setting detent mechanism is provided with location inner core inlet opening (8) and spacer pin inserts slotted eye, the top cylindrical of the location urceolus (3) of plug-in type solution sealing mechanism is provided with anchor cylinder limited step and is connected step with catch ring, its cylindrical shell is provided with spacer pin (6) and location urceolus inlet opening (9), and setting detent mechanism to be arranged in plug-in type solution sealing mechanism and to be connected by spacer pin (6); Be provided with counterweight in the inner circle of the spacing inner core of circumference (20) of bias location setting device and install vertical slot, it is built with counter weight strip, connects target seeker (25) in its lower end; The eccentrically mounted weight detent mechanism of eccentric location setting device comprises circumferential spacing urceolus (16), circumferential spacing inner core (20), upper urceolus (17), lower urceolus (21) and positioning control office, the top cylindrical on upper top cylinder (14) and gingival cyst of mucous gland in the newborn are buckled cylinder (15) and are linked by gingival cyst of mucous gland in the newborn and connect, its underpart cylindrical and the spacing inner core of circumference (20) screwed connection, be suspended on the location spline on circumferential spacing urceolus (16) inner circle step by gingival cyst of mucous gland in the newborn button cylinder (15); Circumference spacing urceolus (16) bottom cylindrical successively with upper urceolus 17 and lower urceolus (21) screwed connection; Upper spheres (19) is arranged on circumferential spacing inner core (20) and trackslips in the ball installation vertical slot of step, and two ends are fixed by screw (18); The step that trackslips of spacing for circumference inner core (20) is pacified seat on the bottom inner circle step of upper urceolus (17); Between lower urceolus (21) and the spacing inner core of circumference (20), positioning control office is installed.
2. horizontal well casing pipe bad break according to claim 1 sets right tubing string, it is characterized in that, described setting detent mechanism comprises stifled (10) and spacing base ring (12) at the bottom of location inner core (1), anchor cylinder top cover (2), location inner core, stifled (10) at the bottom of inner core will be located and be sleeved on the bottom of location inner core (1), be connected with location inner core (1) by stifled location shear pin, the end (11), anchor cylinder top cover (2) is welded on the lower end of location inner core (1) with the top cylindrical screwed connection of locating inner core (1), spacing base ring (12).
3. horizontal well casing pipe bad break according to claim 2 sets right tubing string, it is characterized in that, described plug-in type solution sealing mechanism comprises location urceolus (3), anchor cylinder (4), catch ring (5) and anchor cylinder support set (7), location urceolus (3) is connected by spacer pin (6) with location inner core (1), anchor cylinder (4) is from bottom to top enclosed within location urceolus (3), catch ring (5) is connected step by screwed connection with the catch ring of location urceolus (3), and anchor cylinder support set (7) is from bottom to top enclosed within location urceolus (3).
4. horizontal well casing pipe bad break according to claim 3 sets right tubing string, and it is characterized in that, the cylindrical shell of described anchor cylinder (4) at least processes two lobe ratchets, its ratchet outer wall processes slip insert, each lobe ratchet bottom outer wall is provided with chamfering, forms ratchet-type slips; The top inner circle of catch ring (5) is provided with screw thread, bottom ring body process and assemble draw-in groove; The top inner circle of anchor cylinder support set (7) is provided with spacer pin and snaps in annular groove, and this spacer pin snaps in annular groove and coordinates with spacer pin (6); Sealing ring is provided with in the both sides of location inner core inlet opening (8) and location urceolus inlet opening (9).
5. horizontal well casing pipe bad break according to claim 2 sets right tubing string, it is characterized in that, described bias location setting device comprises target seeker (25), eccentrically mounted weight detent mechanism is connected between crossover sub (13) with target seeker (25), the inner circle of the spacing inner core of circumference (20) of eccentrically mounted weight detent mechanism is at least provided with a counterweight and installs vertical slot, equipped counter weight strip in it.
6. horizontal well casing pipe bad break according to claim 1 sets right tubing string, it is characterized in that, described positioning control office comprises spacing ring (23), spacing ring location shear pin (22), ball jacket (24) and lower spheres, and spacing ring (23) is enclosed within circumferential spacing inner core (20) outside and locates shear pin (22) by spacing ring and is connected with lower urceolus (21); The inner circle of ball jacket (24) is provided with screw thread, its cylindrical step is provided with ball and installs vertical slot, in-built lower spheres, by the bottom cylindrical screwed connection of ball jacket (24) with the spacing inner core of circumference (20), is arranged on the below of spacing ring (23).
7. horizontal well casing pipe bad break according to claim 6 sets right tubing string, it is characterized in that, the trackslip top cylindrical of step of the spacing inner core of described circumference (20) is provided with location spline, and this location spline coordinates with the location spline on the spacing urceolus of circumference (16) inner circle step; The ball that the spacing inner core of circumference (20) is trackslipped on the step ball installed on vertical slot and ball jacket (24) cylindrical step is installed vertical slot and is at least provided with three, each configuration three groups of upper spheres (19) and lower spheres.
8. horizontal well casing pipe bad break according to claim 6 sets right tubing string, it is characterized in that, the spacing inner core of described circumference (20) trackslip the cylindrical step of step and ball jacket (24) be provided with ball install cannelure or the spacing inner core of circumference (20) trackslip step and ball jacket (24) cylindrical step on bearing is installed.
9. horizontal well casing pipe bad break according to claim 5 sets right tubing string, it is characterized in that, the bottom inner circle screwed connection of described crossover sub (13) top cylindrical and the anchor cylinder support set (7) of plug-in type solution sealing mechanism; Bottom inner circle and the eccentric top cylindrical screwed connection of locating the spacing urceolus (16) of setting device of crossover sub (13); Sealing ring is provided with at crossover sub (13) and the two ends of anchor cylinder support set (7) and spacing urceolus (16) junction; Target seeker (25) body is provided with axial relief hole, and its vertex (vertices) is wedge sharp structure.
10. horizontal well casing pipe bad break that tubing string uses repairs tubing string to coordinate horizontal well casing pipe bad break described in claim 1 to set right, comprise oil pipe and casing repairing instrument (b1), oil pipe is connected with casing repairing instrument (b1), it is characterized in that, at the cylinder body bottom connecting insertion (26) of casing repairing instrument (b1), this intubate (26) is inserted bias and is set right in the location urceolus (3) of hanger (a3); The set right external diameter of hanger (a3) of external diameter and the bias of casing repairing instrument (b1) conforms to or establishes the set right external diameter of hanger (a3) of changeover portion and bias to match in casing repairing instrument (b1) lower outer diameter; Described intubate (26) is screwed connection formula or can salvaging type, and its body of rod lower end is circular or conical; The top cylindrical of the intubate (26) of screwed connection formula and the cylindrical shell lower end screwed connection of casing repairing instrument (b1), its underpart external diameter and bias are set right and are located the minor diameter fit of urceolus (3) in hanger (a3); Can the top of intubate (26) of salvaging type be connected by the cylinder body bottom of joint with casing repairing instrument (b1), its underpart external diameter and bias are set right and are located the minor diameter fit of urceolus (3) in hanger (a3).
11. use claim 10 horizontal well casing pipe bad break to repair the casing-broken renovation technique of tubing string, and its processing step is as follows:
A, by mechanical type horizontal well casing pipe bad break eccentric positioning detector, detection is carried out to casing-broken orientation and degree and determine;
B, the tubing string that sets right prepare before going into the well: according to down-hole casing bad break orientation before going into the well, first counter weight strip is installed, the bias of tubing string of setting right is regulated to set right the eccentric detent mechanism of hanger (a3), just to the coincident central of bottom bad break sleeve pipe when making the vertex (vertices) of target seeker (25) static under gravity;
C, under enter to set right tubing string, set right bad break sleeve pipe;
D, hydraulic anchor hang the tubing string that sets right;
E, under enter to repair tubing string and press down deblocking bias and to set right hanger (a3);
F, continuing to transfer reparation tubing string, by casing-broken cross section, by repairing tubing string, the well part of staying of the tubing string that sets right being pushed down-hole;
G, casing repairing instrument (b1) is used to carry out the repair at casing-broken place.
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| CN201210329397.XA CN102852478B (en) | 2012-09-08 | 2012-09-08 | Centralizing string and restoring string for horizontal well casing pipe dislocation and restoring process of centralizing string and restoring string |
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| CN201210329397.XA CN102852478B (en) | 2012-09-08 | 2012-09-08 | Centralizing string and restoring string for horizontal well casing pipe dislocation and restoring process of centralizing string and restoring string |
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| CN108360995B (en) * | 2018-03-12 | 2020-05-12 | 东营市龙为机电设备有限公司 | Application method of coiled tubing cut restoration and repair device |
| CN114439400B (en) * | 2020-11-06 | 2024-03-01 | 中国石油天然气股份有限公司 | Staggered pipe column connecting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519455A (en) * | 2003-01-22 | 2004-08-11 | 石油大学(北京) | Equipment prevents a vertical drilling well from deflexion |
| CN2851503Y (en) * | 2005-10-09 | 2006-12-27 | 中国石油大学(北京) | Hydraulic automatic anti-deflection drilling tools |
| CN201627552U (en) * | 2010-03-23 | 2010-11-10 | 中国有色金属工业昆明勘察设计研究院 | Eccentric block core printer |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2672282Y (en) * | 2004-01-10 | 2005-01-19 | 张岚 | Hydraulic force generator in well |
| CN2787819Y (en) * | 2005-03-01 | 2006-06-14 | 张子杰 | Displacement corrector for oil well casing |
| CN200961455Y (en) * | 2006-10-17 | 2007-10-17 | 新疆石油管理局井下作业公司 | Centralising device for casing shear |
| RU2364705C1 (en) * | 2007-12-17 | 2009-08-20 | Николай Александрович Шамов | Device for removing of processing depositions, washing and wells development with low formation pressure (versions) |
| RU2366798C1 (en) * | 2008-01-24 | 2009-09-10 | Владимир Васильевич Торопынин | Hydraulic packer |
| CN201265389Y (en) * | 2008-09-25 | 2009-07-01 | 西部钻探吐哈钻井工艺研究院 | Lower-pressure deblocking type bridge plug and deblocking suspension |
| CN201851057U (en) * | 2010-09-26 | 2011-06-01 | 中国石油化工股份有限公司 | Casing-broken well repair tubular column |
| CN201843555U (en) * | 2010-10-22 | 2011-05-25 | 中国石油天然气集团公司 | Hydraulic expansion cone for sleeve repair |
| CN202108424U (en) * | 2011-05-13 | 2012-01-11 | 中国石油天然气股份有限公司 | Perforating, fracturing and draining integrated tubular column for oil well |
| CN202360054U (en) * | 2011-10-21 | 2012-08-01 | 中国石油化工股份有限公司 | Correcting and repairing integrated tool for casing-broken horizontal wells |
| CN202866712U (en) * | 2012-09-08 | 2013-04-10 | 中国石油化工股份有限公司 | Correct setting pipe column and repairing pipe column for horizontal well sleeve dislocation |
-
2012
- 2012-09-08 CN CN201210329397.XA patent/CN102852478B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519455A (en) * | 2003-01-22 | 2004-08-11 | 石油大学(北京) | Equipment prevents a vertical drilling well from deflexion |
| CN2851503Y (en) * | 2005-10-09 | 2006-12-27 | 中国石油大学(北京) | Hydraulic automatic anti-deflection drilling tools |
| CN201627552U (en) * | 2010-03-23 | 2010-11-10 | 中国有色金属工业昆明勘察设计研究院 | Eccentric block core printer |
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