CN103061700A - Casing pipe dislocation horizontal well correction and repair method and dedicated integration tools of casing pipe dislocation horizontal well correction and repair - Google Patents
Casing pipe dislocation horizontal well correction and repair method and dedicated integration tools of casing pipe dislocation horizontal well correction and repair Download PDFInfo
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- CN103061700A CN103061700A CN2011103217721A CN201110321772A CN103061700A CN 103061700 A CN103061700 A CN 103061700A CN 2011103217721 A CN2011103217721 A CN 2011103217721A CN 201110321772 A CN201110321772 A CN 201110321772A CN 103061700 A CN103061700 A CN 103061700A
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Abstract
The invention discloses dedicated integration tools of casing pipe dislocation horizontal well correction and repair. The structure comprises a bottom expansion work room, an expansion combination sealing device, a propelling hydraulic cylinder device and a top anchoring device from top to down in sequence, and the bottom expansion work room, the expansion combination sealing device, the propelling hydraulic cylinder device and the top anchoring device are connected. A dislocated casing pipe in a horizontal section of a horizontal well can be corrected and repaired, the shortcoming that an existing dislocated casing pipe in a horizontal section of a horizontal well can not be corrected and repaired effectively is overcome, some abandoned wells and dried-up wells are revived, oil well yield is improved, service life of oil wells is prolonged, and input-output ratio of development cost is improved. The casing pipe dislocation horizontal well correction and repair method and dedicated integration tools of the casing pipe dislocation horizontal well correction and repair is characterized in that two processes of correction and casing pipe repair are combined. The casing pipe dislocation horizontal well correction and repair method and dedicated integration tools of the casing pipe dislocation horizontal well correction and repair omits a process of fixing bottom dislocation casing pipes, avoids secondary pollution of an oil layer, has simple construction process, reduces requirements for construction workers, and is beneficial to popularizing.
Description
Technical field
The present invention relates to the horizontal well recovery technique of setting right, specifically set right restorative procedure and special-purpose integrated tool thereof of casing-broken horizontal well.
Background technology
The large-scale application of present horizontal well, protect product for the stable yields in oil field and contributed huge strength, but the continuous deterioration along with the continuous expansion of applied environment and underground working, also expose one by one the problem that some popularization initial stages do not consider, situation as horizontal segment generation casing-broken is exactly the most obvious example, this situation is very high at the probability that the heavy crude heat extraction block occurs, because the well workover field does not also have the ripe supporting recovery technique of horizontal well at present, usually when also reaching application life, just do not scrap in advance oil well, cause the huge waste of fund and resource, restricted to a certain extent the raising of reservoir recovery ratio and use rate.Current bulged tube technology has been widely used in petroleum industry; wherein be applied in also not within minority in completion and the well workover; wherein use the expansion pipe well repairing device of the more representational picture patent disclosure of bulged tube technology technology in the well workover field; the patent No. is 200610016410.0; Shengli Oil Field drilling well institute has all applied for many patents of invention; but the major defect of its technique and instrument still rests in the past the conventional straight well technique; being lowered to the tip corrector enters on the lower tubing string gravity and comes the bad break sleeve pipe is set right; set right and be fixed lower parts casing pipe operation after tubing string trips out; carry out again afterwards follow-up repair; working procedure must be divided into two or more operation like this; when running into the larger hole condition of the power of to set right or helpless; easily pause running string bad; accident very easily appears; usually can inject the sleeve pipe after some chemical fixatives (such as cement etc.) are fixedly set right when constructing simultaneously; if being in oil layer section, casing-broken will cause secondary pollution to oil reservoir; caused after the industry and traffic well the fairly obvious and very difficult answer of the oil well underproduction.Moreover horizontal well is because its special casing programme, and horizontal segment generally all within oil reservoir, can't adopt the renovation technique of this conventional straight well basically.
Summary of the invention
The objective of the invention is the defective that exists for prior art, casing-broken horizontal well set right restorative procedure and special-purpose integrated tool thereof are provided.The reparation of can setting right to the sleeve pipe of horizontal well horizontal segment bad break, overcome the shortcoming that prior art can not effectively be set right and repair horizontal segment bad break sleeve pipe, a part of abandoned well dried-up well is brought back to life, improve oil well output, prolong oil well application life, to the greatest extent the maximum input-output ratio that may improve development cost.Characteristics of the present invention will be set right exactly and casing repairing two step process combine, and save fixedly bottom bad break sleeve pipe operation, avoided the Re-pollution to oil reservoir, and working procedure be simple, and construction team's requirement condition is reduced, and be beneficial to popularization.
The technical solution adopted for the present invention to solve the technical problems is: the casing-broken horizontal well restorative procedure that sets right the steps include:
At first the casing-broken horizontal well is set right and repair special-purpose integrated tool assembly, namely from bottom to top expansion service depot, bottom, expansion combination sealing arrangement, PF cylinder assembly and top anchoring device four parts being connected in turn forms whole casing-broken horizontal well and sets right and repair special-purpose integrated tool;
Expansion service depot, bottom makes the lower guide leader withstand on the casing-broken place, suppresses from well head, and the sleeve pipe module of setting right is started working, and anchoring device and fluid cylinder begin feed liquor;
After anchoring device fixes swollen head tube post, fluid cylinder begins to promote the target seeker that sets right in the front bottom expansion service depot wrong section sleeve pipe that sets right, when expansion service depot, the bottom of instrument front end arrives specified location first set pressure system releasing pressure automatically, locate to close hydraulic anchor to the anchor station at well head input plug or ball afterwards, discharge first tubing string, then continue to come downwards to fluid cylinder and close the cover place and close first set pressure pressure relief opening;
After anchoring device fixes tubing string, when fluid cylinder begins to promote the reparation module of instrument front end, fluid cylinder length can be adjusted, after stroke is covered, first do not throw plug or ball, open well head hose interface and press down, make and walk the stroke fluid cylinder and push back original state, can continue afterwards to suppress, adopt this stepping method that goes round and begins again until repair required stroke.
Set up the second cover pressure system, the expansion service depot, bottom of instrument starts working, swollen head from bottom to top with the solid expansion pipe distending until swollen head deviate from, by the expansion combination sealing arrangement sealing of expansion seating nipple is anchored on the outer sleeve, finish the reparation to the casing failure place, bore afterwards the target seeker that falls to set right and to hand over well.
The technical solution adopted for the present invention to solve the technical problems is: the casing-broken horizontal well sets right and repairs special-purpose integrated tool, and its structure comprises expansion service depot, bottom, expansion combination sealing arrangement, PF cylinder assembly and top anchoring device four parts that are connected in turn from bottom to top.
Expansion service depot, described bottom structure comprises that outermost expansion tube, expansion tube are provided with the target seeker that sets right foremost; Described expansion tube inside is provided with upper center tube and the lower center tube that links together up and down; Cover has swollen crown cover and the swollen head of self-regulated pitch circle of combining on the described lower center tube; Between described swollen crown cover and the swollen head of self-regulated pitch circle ball type of contact surface is arranged; Ball type of contact surface between described swollen crown cover and the swollen head of self-regulated pitch circle is positioned at the centre of sphere of the swollen head of circle away from a side of the head that sets right; The cover outside, described swollen crown cover has the sealing upper press ring; Also overlap on the described lower center tube sealing mat and sealing lower baffle ring are arranged; Also be provided with the middle pressure ring that is enclosed within on the lower center tube in the described sealing mat.
Also be provided with sealing ring between the described sealing lower baffle ring outside and the expansion tube inwall; The described head that sets right is connected contact position with expansion tube and also is provided with an O-ring seal that sets right; Elevator crossover sub connection in described upper center tube and the top PF cylinder assembly is provided with O-ring seal.
Described expansion combination sealing arrangement structure is the soft metal joint ring, is welded in the pregroove marks on expansion service depot, the bottom outermost expansion tube; Described soft metal is the coefficient of thermal expansion metal lower than the large hardness of sleeve pipe (such as copper etc.); Rubber cover sulfuration is at the steel frame band that presets in addition, forms many group hermetically-sealed constructions with the soft metal joint ring of front end; Described steel frame band is a steel band that the space protrusion piece is arranged at a certain distance; Its lowermost end position height is the reducing position that the expansion tube outside is connected with respect to upper lower center tube.
Described PF cylinder assembly is divided into one, two, three fluid cylinder, every grade of fluid cylinder all is divided into outside fluid cylinder overcoat and inner fluid cylinder inner sleeve, the described first order fluid cylinder successively fluid cylinder lower union joint by the below is connected to second level fluid cylinder and front end pressure release indicating sleeve with the pressure release indicator hole, and described second level fluid cylinder is connected to third level fluid cylinder by the second level fluid cylinder lower union joint of below; Described third level fluid cylinder is connected to the elevator crossover sub by crossover sub under the third level fluid cylinder of below successively.
Described fluid cylinder pressure release indicating sleeve and close cover and be provided with rubber seal ring between the urceolus; Described fluid cylinder pressure release indicating sleeve front end is positioned at the rubber seal ring place with the pressure release indicator hole; Described close that cover urceolus inside is provided with also that band closes cylinder in the cover close the cover inner core; The described cylinder of closing in the cover is closed cylinder O-ring seal in the cover with closing to be provided with between the cover urceolus, and the described cylinder of closing in the cover is closed the cover shear pin, closed and overlap the large cushion rubber of inner core, close and overlap the little cushion rubber of inner core with closing to be provided with between the cover inner core; Described closing is the slot structure in the middle part of the cylinder in the cover; The described cover inner core of closing is with fluid cylinder inlet openings at different levels; Be respectively arranged with O-ring seal, the interior little O-ring seal of fluid cylinder upper binding head in the outer large O-ring seal of fluid cylinder upper binding head, the fluid cylinder upper binding head on the fluid cylinder upper binding head; Be provided with O-ring seal in fluid cylinder lower union joint external seal cushion rubber, the fluid cylinder lower union joint on the fluid cylinder lower union joint; Described closing is provided with also on the cover inner core how group is closed cover inner core O-ring seal.
Urceolus under urceolus, the hydraulic anchor on the hydraulic anchor that described top anchoring device links up from top to bottom, urceolus inside is inner core on the hydraulic anchor on the described hydraulic anchor, urceolus inside is inner core under the hydraulic anchor under the hydraulic anchor; Inner core is with pawl structures under the described hydraulic anchor, and urceolus is connected in the first order fluid cylinder in the PF cylinder assembly by tubing coupling and puts under the described hydraulic anchor.
Urceolus is offered the through hole of inner core on the hydraulic anchor on the described hydraulic anchor, inserting spring in the through hole, this spring is positioned at that an end of inner core is provided with the spring compressing tablet on the hydraulic anchor, and the opposite other end then is provided with the outer compressing tablet of spring and is fixed on the upper outside drum outer wall of hydraulic anchor by fixing pin; Be provided with interconnected ring between the inner core on urceolus and the hydraulic anchor on the described hydraulic anchor; Be provided with the inner core sealing ring on the described hydraulic anchor on inner core and the interconnected ring; Be provided with compressing tablet sealing ring in the spring in the described spring on the compressing tablet; Be respectively arranged with on the hydraulic anchor urceolus path sealing ring under the large footpath of urceolus sealing ring, the hydraulic anchor on the hydraulic anchor under urceolus and the hydraulic anchor on the urceolus; Inner core and with being provided with the location shear pin under the hydraulic anchor of closing ratchet between the inner core on the described hydraulic anchor.
Set right restorative procedure and special-purpose integrated tool thereof of casing-broken horizontal well of the present invention is compared with existing technology, and has following beneficial effect:
The present invention is divided into expansion service depot, bottom, expansion combination sealing arrangement, PF cylinder assembly and top anchoring device four parts mainly by modularized design, respectively by the control of two cover pressure systems.During the work of first set pressure system, upper tool part anchoring device and PF cylinder assembly are started working, bottom bad break sleeve pipe is set right, set right and have the abrupt pressure reduction indication behind the assigned address, afterwards by throwing plug closing tool top anchoring device and pressure release indicator hole, set up the second cover pressure system, the expansion service depot, bottom of instrument starts working, and by the expansion combination sealing arrangement wrong section sleeve pipe is repaired.The bad break horizontal well casing pipe reparation integrated tool that sets right can overcome the shortcoming of existing similar well workover technology.It is the problem that can't effectively be set right in the casing-broken place and repair for existing well workover technology, the design that proposes is set right the wrong section sleeve pipe of prior art and repair two step process and ideally combines, time and the step of whole work progress have been shortened, avoided the secondary injury to reservoir, and with low cost, have broad application prospects.
Description of drawings
Fig. 1 is that casing-broken horizontal well of the present invention sets right and repairs the structural representation of special-purpose integrated tool;
Fig. 2 is that casing-broken horizontal well of the present invention sets right and repairs the top anchoring device structural representation of special-purpose integrated tool;
Fig. 3 is the partial enlarged drawing of Fig. 2;
Fig. 4, Fig. 5 are that casing-broken horizontal well of the present invention sets right and repairs the PF cylinder assembly structural representation (being respectively upper semisection and lower semisection) of special-purpose integrated tool;
Fig. 6 is set right the expansion service depot, bottom of repairing special-purpose integrated tool and the structural representation of expansion combination sealing arrangement of casing-broken horizontal well of the present invention.
Among the figure: urceolus on 1 hydraulic anchor, 2 interconnected rings, 3 inner core sealing rings, compressing tablet in 4 fixing pins, 5 springs, 6 springs, the outer compressing tablet of 7 springs, compressing tablet sealing ring in 8 springs, the large footpath of urceolus sealing ring on 9 hydraulic anchors, urceolus under 10 hydraulic anchors, urceolus path sealing ring under 11 hydraulic anchors, inner core on 12 hydraulic anchors, 13 location shear pins, inner core under 14 hydraulic anchors, 15 thickenings, 31/2 tubing coupling, 17 thickenings, 31/2 tubing coupling, 18 close the cover urceolus, 19 rubber seal rings, 20 fluid cylinder pressure release indicating sleeves, 21 close cylinder in the cover, 22 close cylinder O-ring seal in the cover, and 23 close the cover shear pin, and 24 close the cover inner core, 25 close the large cushion rubber of cover inner core, 26 close the little cushion rubber of cover inner core, 27 fluid cylinder upper binding heads, 28 fluid cylinder lower union joints, the outer large O-ring seal of 29 fluid cylinder upper binding heads, little O-ring seal in the O-ring seal in the 30 fluid cylinder upper binding heads, 31 fluid cylinder upper binding heads, 32 fluid cylinder lower union joint external seal cushion rubbers, 33 close the cover O-ring seal, O-ring seal in 34 first order fluid cylinder overcoats, 35 fluid cylinder lower union joints, 36 first order fluid cylinder inner sleeves, 37 second level fluid cylinder inner sleeve upper binding heads, 38 second level fluid cylinder inner sleeves, 39 second level fluid cylinder overcoats, 40 third level fluid cylinder inner sleeve upper binding heads, 41 third level fluid cylinder inner sleeves, 42 third level fluid cylinders, conversion head under 43 third level fluid cylinders, 44 elevator crossover subs, 45 upper center tubes, 46 O-ring seals, 47 expansion tubes, 48 soft metal joint rings, 49 lower center tubes, 50 swollen heads, 51 swollen crown covers, 52 sealing upper press rings, 53 sealing mats, pressure ring in the middle of 54,55 sealing rings, 56 sealing lower baffle rings, 57 heads that set right, 58 O-ring seal that set right.
The specific embodiment
Next with reference to Figure of description set right restorative procedure and special-purpose integrated tool thereof of casing-broken horizontal well of the present invention explained below doing.
The casing-broken horizontal well sets right and repairs special-purpose integrated tool, and its structure comprises expansion service depot, bottom, expansion combination sealing arrangement, PF cylinder assembly and top anchoring device four parts that are connected in turn from bottom to top.As shown in Figure 1.
As shown in Figure 6, expansion service depot, described bottom structure comprises that outermost expansion tube 47, expansion tube bottom arrange sets right 57, and described expansion tube inside is provided with upper center tube 45 and the lower center tube 49 that links together up and down; Cover has swollen 50 of the swollen crown cover 51 combined and self-regulated pitch circle on the described lower center tube, between described swollen crown cover and the swollen head of self-regulated pitch circle ball type of contact surface is arranged; Ball type of contact surface between described swollen crown cover and the swollen head of self-regulated pitch circle is positioned at the centre of sphere of the swollen head of circle away from a side of the head that sets right; There is sphere to cooperate between the swollen head of circle and the top cover, can makes swollen head microvariations free adjustment according to induction seating nipple internal diameter and stress in 15 degree angles, reduce to greatest extent the required hydraulic pressure of expansion seating nipple.The cover outside, described swollen crown cover has sealing upper press ring 52; Also overlapping on the described lower center tube has sealing mat 53 and sealing lower baffle ring 56, also is provided with the middle pressure ring 54 that is enclosed within on the lower center tube in the described sealing mat.Swollen headgear is contained on the top cover, top cover is sleeved on the lower center tube, be depressed on the combination sealing arrangement, combination sealing arrangement links to each other by screw thread with lower center tube, it is sealed at both ends up and down to form combination sealing arrangement, and its end withstands on the target seeker that sets right and (power of setting right is delivered on the central tube, outermost expansion tube do not had the impact of active force), set right head by screwed connection on expansion tube, consist of expansion service depot, bottom with expansion tube and top combination sealing arrangement.Also be provided with sealing ring 55 between described sealing lower baffle ring 56 outsides and the expansion tube inwall; The described head that sets right is connected contact position with expansion tube and also is provided with the O-ring seal 58 that sets right; Elevator crossover sub connection in described upper center tube 45 and the top PF cylinder assembly is provided with O-ring seal 46.
Among Fig. 6, described expansion combination sealing arrangement structure is soft metal joint ring 48, be enclosed within the pregroove marks on expansion service depot, the bottom outermost expansion tube, the rubber cover sulfuration is at the steel frame band that presets in addition, forms many group hermetically-sealed constructions with the soft metal joint ring of front end; Described steel frame band is a steel band that the space protrusion piece is arranged at a certain distance; Its position height is the reducing position that the expansion tube outside is connected with respect to upper lower center tube.Prefabricated soft metal ring is fixed in the expansion tube pregroove marks with sandwich rubber strip by vulcanizing the technique such as cementing; The soft metal joint ring is the large prefabricated soft metal ring (copper, plumbous etc.) of coefficient of thermal expansion.Expansion combination sealing section is the combination sealing of sandwich rubber strip and special soft metal ring, and sandwich rubber strip refers to that internal layer has the steel core cover of certain prefabricated shape, and the outside is rubber, its objective is to play to hang expansion tube to sleeve pipe.Special soft metal ring refers to the coefficient of thermal expansion soft metal larger than sleeve pipe, makes the metal ring of definite shape such as copper, lead etc., and its purpose is the effect of playing sealing in the later steam injection thermal recovery process that reaches in the process of repairing.
As shown in Figure 4 and Figure 5, described PF cylinder assembly is divided into one, two, three fluid cylinder, every grade of fluid cylinder all is divided into outside fluid cylinder overcoat and inner fluid cylinder inner sleeve, be respectively first order fluid cylinder overcoat 34, first order fluid cylinder inner sleeve 36, second level fluid cylinder inner sleeve 38, second level fluid cylinder overcoat 39, third level fluid cylinder inner sleeve 39, described first order fluid cylinder is connected to second level fluid cylinder 39 by the fluid cylinder lower union joint 37 of below, the second level fluid cylinder lower union joint 40 of described second level fluid cylinder by the below be connected to third level fluid cylinder 42; Described third level fluid cylinder is by conversion head under the third level fluid cylinder of below 43 and be connected to elevator crossover sub 44.Described fluid cylinder pressure release indicating sleeve 20 and close cover and be provided with rubber seal ring 19 between the urceolus 18; Described fluid cylinder pressure release indicating sleeve 20 is positioned at rubber seal ring 19 places with the pressure release indicator hole; Described close that cover urceolus 18 inside are provided with also that band closes cylinder 21 in the cover close cover inner core 24; The described cylinder 21 of closing in the cover is closed cover urceolus O-ring seal 22 with closing to be provided with between the cover urceolus 18, and the described cylinder of closing in the cover is closed cover shear pin 23, closed and overlap the large cushion rubber 25 of inner core, close and overlap the little cushion rubber 26 of inner core with closing to be provided with between the cover inner core; Be respectively arranged with O-ring seal 30, the interior little O-ring seal 31 of fluid cylinder upper binding head in the outer large O-ring seal 29 of fluid cylinder upper binding head, the fluid cylinder upper binding head on the fluid cylinder upper binding head; Be provided with O-ring seal 35 in fluid cylinder lower union joint external seal cushion rubber 32, the fluid cylinder lower union joint on the fluid cylinder lower union joint; Described close put also be provided with close the cover O-ring seal 33.
As shown in Figures 2 and 3, urceolus 10 under urceolus 1, the hydraulic anchor on the hydraulic anchor that described top anchoring device links up from top to bottom, urceolus inside is inner core 12 on the hydraulic anchor on the described hydraulic anchor, urceolus inside is inner core 14 under the hydraulic anchor under the hydraulic anchor; Inner core is with pawl structures under the described hydraulic anchor, and urceolus is connected in the first order fluid cylinder in the PF cylinder assembly and puts by thickening 31/2 tubing coupling 15,17 under the described hydraulic anchor.Urceolus is offered the through hole of inner core on the hydraulic anchor on the described hydraulic anchor, inserting spring 6 in the through hole, this spring is positioned at that an end of inner core is provided with spring compressing tablet 5 on the hydraulic anchor, and the opposite other end then is provided with the outer compressing tablet 7 of spring and is fixed on the upper outside drum outer wall of hydraulic anchor by fixing pin 4; Be provided with interconnected ring 2 on the described hydraulic anchor on urceolus and the hydraulic anchor between the inner core; Inner core and interconnected ring are provided with inner core sealing ring 3 on the described hydraulic anchor; Be provided with compressing tablet sealing ring 8 in the spring in the described spring on the compressing tablet; Be respectively arranged with on the hydraulic anchor urceolus path sealing ring 11 under the large footpath of urceolus sealing ring 9, the hydraulic anchor on the hydraulic anchor under urceolus and the hydraulic anchor on the urceolus; On the described hydraulic anchor inner core and be provided with between the inner core under the hydraulic anchor of closing ratchet the location shear pin 13.
The present invention is divided into expansion service depot, bottom, expansion combination sealing arrangement, PF cylinder assembly and top anchoring device four parts mainly by modularized design, and four parts are respectively by the control of two cover pressure systems.During the work of first set pressure system, PF cylinder assembly and top anchoring device are started working, and bottom sleeve is set right, and have the abrupt pressure reduction indication behind the assigned address that sets right, and set up the second cover pressure system by throwing plug afterwards, and wrong section sleeve pipe is repaired.The execute-in-place process is with above-mentioned component assemble assembly G.I.H according to the diagram connected mode, at first the casing-broken horizontal well is set right and repair special-purpose integrated tool assembly, namely from bottom to top expansion service depot, bottom, expansion combination sealing arrangement, PF cylinder assembly and top anchoring device four parts being connected in turn forms whole casing-broken horizontal well and sets right and repair special-purpose integrated tool; Expansion service depot, bottom makes the lower guide leader withstand on the casing-broken place, suppress from well head, PF cylinder assembly and the top anchoring device of instrument are started working, after anchoring device fixes swollen head tube post, fluid cylinder begins to promote the target seeker that sets right in the instrument front bottom expansion service depot wrong section sleeve pipe that sets right, when the instrument front end arrives specified location first set pressure system releasing pressure automatically, locate to close hydraulic anchor to the anchor station at well head input plug or ball afterwards, discharge first tubing string, then continue to come downwards to fluid cylinder and close the pressure release indicator hole that the cover place closes the first set pressure system; Set up the second cover pressure system, the expansion service depot, bottom of instrument starts working, swollen head is from bottom to top with the solid expansion pipe distending, by the expansion combination sealing arrangement expansion seating nipple is anchored on the outer sleeve, until swollen head is deviate from, finish the reparation to the casing failure place, the whole subsidy construction technology that sets right finishes.
The above embodiment is a kind of of the more preferably concrete embodiment of the present invention, and the common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacement all should be included in protection scope of the present invention.
Claims (10)
1. the casing-broken horizontal well restorative procedure that sets right the steps include:
At first the casing-broken horizontal well is set right and repair special-purpose integrated tool assembly, namely from bottom to top expansion service depot, bottom, expansion combination sealing arrangement, PF cylinder assembly and top anchoring device four parts being connected in turn forms whole casing-broken horizontal well and sets right and repair special-purpose integrated tool;
Expansion service depot, bottom makes the lower guide leader withstand on the casing-broken place, suppresses from well head, and the sleeve pipe module of setting right is started working, anchoring device and advance fluid cylinder to begin feed liquor;
After anchoring device fixed tubing string, fluid cylinder began to promote the reparation module of instrument front end, and the target seeker that the sets right wrong section sleeve pipe that sets right arrives specified location first set pressure system releasing pressure automatically when repairing module; Drop into plug at well head afterwards and locate to close hydraulic anchor to the anchor station, discharge first tubing string, then continue to come downwards to fluid cylinder and close the cover place and close the pressure release indicator hole;
Set up the second cover pressure system, the expansion service depot, bottom of instrument starts working, swollen head from bottom to top with the solid expansion pipe distending until swollen head deviate from, by the expansion combination sealing arrangement sealing of expansion seating nipple is anchored on the outer sleeve, finish the reparation to the casing failure place, bore afterwards the target seeker that falls to set right and to hand over well.
2. the casing-broken horizontal well according to claim 1 restorative procedure that sets right, it is characterized in that: after anchoring device fixes tubing string, when fluid cylinder begins to promote the reparation module of instrument front end, fluid cylinder length can be adjusted, and after stroke is covered, does not throw first plug or ball, opening well head hose interface presses down, make and walk the stroke fluid cylinder and push back original state, can continue afterwards to suppress, adopt this stepping method that goes round and begins again until repair required stroke.
3. the casing-broken horizontal well sets right and repairs special-purpose integrated tool, and it is characterized in that: its structure comprises expansion service depot, bottom, expansion combination sealing arrangement, PF cylinder assembly and top anchoring device four parts that are connected in turn from bottom to top.
4. casing-broken horizontal well according to claim 3 sets right and repairs special-purpose integrated tool, it is characterized in that: expansion service depot, described bottom structure comprises that outermost expansion tube, expansion tube front end are provided with the target seeker that sets right, and described expansion tube inside is provided with upper center tube and the lower center tube that links together up and down; Cover has swollen crown cover and the swollen head of self-regulated pitch circle of combining on the described lower center tube; Between described swollen crown cover and the swollen head of self-regulated pitch circle ball type of contact surface is arranged; Ball type of contact surface between described swollen crown cover and the swollen head of self-regulated pitch circle is positioned at the centre of sphere of the swollen head of circle away from a side of the head that sets right; The cover outside, described swollen crown cover has the sealing upper press ring; Also overlap on the described lower center tube sealing mat and sealing lower baffle ring are arranged; Also be provided with the middle pressure ring that is enclosed within on the lower center tube in the described sealing mat.
5. casing-broken horizontal well according to claim 4 sets right and repairs special-purpose integrated tool, it is characterized in that: also be provided with sealing ring between the described sealing lower baffle ring outside and the expansion tube inwall; The described head that sets right is connected contact position with expansion tube and also is provided with an O-ring seal that sets right; Elevator crossover sub connection in described upper center tube and the top PF cylinder assembly is provided with O-ring seal.
6. casing-broken horizontal well according to claim 3 sets right and repairs special-purpose integrated tool, and it is characterized in that: described expansion combination sealing arrangement structure is the soft metal joint ring, is welded in the pregroove marks on expansion service depot, the bottom outermost expansion tube; Described soft metal is that coefficient of thermal expansion is than the lower metal of the large hardness of sleeve pipe; Rubber cover sulfuration is at the steel frame band that presets in addition, forms many group hermetically-sealed constructions with the soft metal joint ring of front end; Described steel frame band is a steel band that the space protrusion piece is arranged at a certain distance; Its lowermost end position height is the reducing position that the expansion tube outside is connected with respect to upper lower center tube.
7. casing-broken horizontal well according to claim 3 sets right and repairs special-purpose integrated tool, it is characterized in that: described PF cylinder assembly is divided into one, two, three fluid cylinder, every grade of fluid cylinder all is divided into outside fluid cylinder overcoat and inner fluid cylinder inner sleeve, the described first order fluid cylinder successively fluid cylinder lower union joint by the below is connected to second level fluid cylinder and front end pressure release indicating sleeve with the pressure release indicator hole, and described second level fluid cylinder is connected to third level fluid cylinder by the second level fluid cylinder lower union joint of below; Described third level fluid cylinder is connected to the elevator crossover sub by crossover sub under the third level fluid cylinder of below successively.
8. casing-broken horizontal well according to claim 7 sets right and repairs special-purpose integrated tool, it is characterized in that: described fluid cylinder pressure release indicating sleeve and close between the cover urceolus and be provided with rubber seal ring; Described fluid cylinder pressure release indicating sleeve front end is positioned at the rubber seal ring place with the pressure release indicator hole; Described close that cover urceolus inside is provided with also that band closes cylinder in the cover close the cover inner core; The described cylinder of closing in the cover is closed cylinder O-ring seal in the cover with closing to be provided with between the cover urceolus, and the described cylinder of closing in the cover is closed the cover shear pin, closed and overlap the large cushion rubber of inner core, close and overlap the little cushion rubber of inner core with closing to be provided with between the cover inner core; Described closing is the slot structure in the middle part of the cylinder in the cover; The described cover inner core of closing is with fluid cylinder inlet openings at different levels; Be respectively arranged with O-ring seal, the interior little O-ring seal of fluid cylinder upper binding head in the outer large O-ring seal of fluid cylinder upper binding head, the fluid cylinder upper binding head on the fluid cylinder upper binding head; Be provided with O-ring seal in fluid cylinder lower union joint external seal cushion rubber, the fluid cylinder lower union joint on the fluid cylinder lower union joint; Described closing is provided with also on the cover inner core how group is closed cover inner core O-ring seal.
9. casing-broken horizontal well according to claim 3 sets right and repairs special-purpose integrated tool, it is characterized in that: urceolus under urceolus, the hydraulic anchor on the hydraulic anchor that described top anchoring device links up from top to bottom, urceolus inside is inner core on the hydraulic anchor on the described hydraulic anchor, and urceolus inside is inner core under the hydraulic anchor under the hydraulic anchor; Inner core is with pawl structures under the described hydraulic anchor, and urceolus is connected in the first order fluid cylinder in the PF cylinder assembly by tubing coupling and puts under the described hydraulic anchor.
10. casing-broken horizontal well according to claim 9 sets right and repairs special-purpose integrated tool, it is characterized in that: urceolus is offered the through hole of inner core on the hydraulic anchor on the described hydraulic anchor, inserting spring in the through hole, this spring is positioned at that an end of inner core is provided with the spring compressing tablet on the hydraulic anchor, and the opposite other end then is provided with the outer compressing tablet of spring and is fixed on the upper outside drum outer wall of hydraulic anchor by fixing pin; Be provided with interconnected ring between the inner core on urceolus and the hydraulic anchor on the described hydraulic anchor; Inner core and interconnected ring are provided with the inner core sealing ring on the described hydraulic anchor; Be provided with compressing tablet sealing ring in the spring in the described spring on the compressing tablet; Be respectively arranged with on the hydraulic anchor urceolus path sealing ring under the large footpath of urceolus sealing ring, the hydraulic anchor on the hydraulic anchor under urceolus and the hydraulic anchor on the urceolus; Inner core and with being provided with the location shear pin under the hydraulic anchor of closing ratchet between the inner core on the described hydraulic anchor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110321772.1A CN103061700B (en) | 2011-10-21 | 2011-10-21 | Casing-broken horizontal well sets right restorative procedure and special integrated tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110321772.1A CN103061700B (en) | 2011-10-21 | 2011-10-21 | Casing-broken horizontal well sets right restorative procedure and special integrated tool thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103061700A true CN103061700A (en) | 2013-04-24 |
| CN103061700B CN103061700B (en) | 2016-12-07 |
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| CN110485961A (en) * | 2019-08-14 | 2019-11-22 | 中国石油化工股份有限公司 | A kind of hydraulic shaping tubing string and casing swage technique |
| CN112696179A (en) * | 2019-10-22 | 2021-04-23 | 中国石油化工股份有限公司 | Screen pipe dislocation insertion centralizing repair pipe column and method |
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