CN101575952B - Gas power bushing patch device with large drift diameter - Google Patents
Gas power bushing patch device with large drift diameter Download PDFInfo
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- CN101575952B CN101575952B CN2009100218195A CN200910021819A CN101575952B CN 101575952 B CN101575952 B CN 101575952B CN 2009100218195 A CN2009100218195 A CN 2009100218195A CN 200910021819 A CN200910021819 A CN 200910021819A CN 101575952 B CN101575952 B CN 101575952B
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Abstract
The invention relates to a gas power bushing patch device with a large drift diameter, which consists of a gas power system and a bushing patch system, and carries out full hole enlargement for a patch pipe to attach to the internal wall of a sleeve. The patch length can be meters to dozens of meters. During working, the high pressure gas generated by a first-stage charge pushes a piston rod and aflow switch to do relative motion through an inclined hole at the lower end of a blind hole on the piston rod, the upper end face of the piston rod is separated from the lower end face of the flow sw itch, a sealing ring at the upper part of the flow switch forms a hole enlargement cavity through the lower end of the piston rod, the high pressure gas enters the blind hole at the lower end of the piston rod through a radial hole at the lower end of the piston rod and actuates a second-stage ignition system to ignite a second-stage charge through a hollow pull rod and an air flow distributor, the high pressure gas generated by the second-stage charge enters the hole enlargement cavity through an inclined hole at the bottom end of the air flow distributor and pushes a diameter expander to move upwards to implement the hole enlargement of the patch pipe, and the external wall of the patch pipe is tightly combined with the internal wall of the sleeve so as to finish the patch with the largedrift diameter. The device is convenient to construct, does not need well field ground stamping equipment, and can patch a section with bushing damage with any length.
Description
Technical field
The invention belongs to oil well recovery technique field, relate to a kind of casing patching device, particularly a kind of gas power bushing patch device with large drift diameter.
Background technology
Existing a general phenomenon in the Oilfield developing process both at home and abroad, is exactly the damage of oil, well sleeve pipe, and the damage of these down-hole metal sleeves can reduce two major types: one is that non-leakage jacket decreases, as distortion such as constriction, bendings; It two decreases for leaking jacket, as break, damage such as bad break.Sleeve pipe badly damaged not only affects the oil field ordinary production, brings the economic loss that can't estimate to country, brings great difficulty also for simultaneously the oil field subsequent development.At present, the used damaged sleeve pipe repair mode in oil field come to divide from power source two kinds of hydrodynamic source and pneumatic power sources.The hydrodynamic source be by large-scale ground suppress equipment with pressure by liquid transfer to the down-hole, promote Expending device and make the hole enlargement of subsidy pipe, have several millimeters gaps between subsidy tube outer surface and the internal surface of casing after its subsidy back hole enlargement; Its subsidy tube outer surface is equipped with several roads rubber ring, and wearing and tearing have reduced sealing effectiveness in the process of going into the well; It needs supporting use large-scale ground press device, expense height, the danger of terrestrial operation high-tension apparatus.Pneumatic power source generally adopts macromolecular material such as gunpowder directly to be contained in the subsidy device and transfers to position to be subsidized, after the igniting, the gases at high pressure acting that utilizes powder burning to produce makes the two ends centrum clamp-on anchor mechanism, the anchor expansion is anchored on the internal surface of sleeve pipe, reaches the subsidy purpose.Patent ZL 200520112637.6 as the applicant discloses a kind of power set that are used for the casing patching device, and these power set are that device is made up of power generating apparatus and power transmission, are mainly used in the reparation of oilfield downhole casing breakage.Have subsidy and repair consequence be stressed height, construction characteristic of simple, be widely applied in practice.The aerodynamic force source apparatus need not ground installation, accounts for well time weak point, and cost is lacked, but its interior latus rectum in subsidy back equals even less than the subsidy bore, interior latus rectum is compared sleeve pipe and seriously dwindled, thereby influences oil, the follow-up notes implementation of processes of adopting of well.Therefore, it is very necessary the casing patching device further being studied.
Summary of the invention
Defective or deficiency at the background technology existence, the objective of the invention is to, a kind of gas power bushing patch device with large drift diameter is provided, this casing patching device need not ground, well site and suppresses equipment, can transfer to the subsidy position smoothly and the hole enlargement of the full section of realization subsidy pipe, interior latus rectum increases greatly, does not change original adopt, annotate process equipment and device, and can regulate subsidy length by adjusting secondary powder charge dose.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of gas power bushing patch device with large drift diameter is made up of gas power system and casing patching system, it is characterized in that:
Described gas power system comprises one-level powder charge, bump ignition mechanism, piston rod, piston rod, flow switch, locking nut and sets tube that wherein, the bump ignition mechanism is used to light the one-level powder charge, for piston rod provides power;
Described piston rod top has central blind hole, central blind hole end that the oblique pore of 2 symmetries is arranged, and there is central blind hole the below, and there are 3 uniform air vents the side that is positioned at central blind hole, and 3 uniform air vents are communicated with the central blind hole of piston rod below;
Described piston rod bottom connects flow switch, and piston rod passes piston rod and contacts fully with the flow switch end face, and locking nut and setting tin is connected with flow switch successively; The top of piston rod and piston rod is connected one-level powder charge, bump ignition mechanism respectively;
Described casing patching system comprises upper sealing ring, subsidy pipe, hollow pull rod, lower sealing ring, initial cavity, Expending device, air-flow distributor, two-stage ignition system, secondary powder charge, guide shoe;
Wherein, hollow pull rod and air-flow distributor have centre bore, and in the air-flow distributor side, radial symmetric has 4 pores, and 4 pores are communicated with the centre bore of air-flow distributor;
Afterbody at air-flow distributor also has 4 symmetrically arranged oblique holes; This oblique hole provides passage for the air-flow of secondary powder charge;
Piston-rod lower end is threaded with hollow pull rod, the hollow pull rod lower end air-flow distributor that is threaded, air-flow distributor afterbody be threaded successively two-stage ignition system and secondary powder charge; Connect guide shoe at secondary powder charge tailing screw flight; Expending device is enclosed within on the external diameter of hollow pull rod, and upper sealing ring and lower sealing ring are positioned at subsidy pipe two ends, and cooperates with the subsidy ligament, and subsidy pipe and initial cavity are threaded; Hollow pull rod after the assembling, air-flow distributor and Expending device penetrate subsidy pipe, the air-flow distributor sealing surface initial cavity lower edge of submerging fully.
Gas power bushing patch device with large drift diameter of the present invention, adopt gunpowder as power source, adopt biconial initial cavity structural system, guarantee that whole system can be transferred smoothly to realize that the complete hole enlargement of subsidy pipe is close to sleeve pipe to the prerequisite of waiting to subsidize the position, interior latus rectum increases greatly; The main effect of one-level powder charge is to utilize the gases at high pressure of its generation to convert mechanical force to finish from making the hole enlargement chamber and utilizing its remaining gases at high pressure to pull the trigger the two-stage ignition system; The gases at high pressure that the back generation is lighted in the secondary powder charge of two-stage ignition system underlying enter the hole enlargement chamber through air-flow distributor, promote Expending device and move upward, and make the hole enlargement of subsidy pipe, and subsidy is managed outer wall and combined closely with internal surface of sleeve pipe, finish big latus rectum subsidy.Avoided use large-scale ground press device, can transfer to the down-hole smoothly and treat the subsidy section, and realize subsidizing the complete hole enlargement of pipe and be close to sleeve pipe, interior latus rectum increases greatly, subsidy length can be regulated arbitrarily, the full well section of subsidy pipe realizes hole enlargement, save time, laborsaving, expense is low, satisfies oil, well is adopted and annotated the implementation of processes requirement.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is subsidy pipe and the sleeve pipe figure after subsidy is finished;
Fig. 3 is the structural representation of piston rod;
Fig. 4 is the structural representation of air-flow distributor.
The present invention is described in further detail below in conjunction with accompanying drawing.
The specific embodiment
Referring to shown in Figure 1, gas power bushing patch device with large drift diameter of the present invention is made up of gas power system and casing patching system,
The gas power system comprises one-level powder charge and bump ignition mechanism (not shown), piston rod 1, piston rod 2, flow switch 3, locking nut 4 and sets tube 5 that wherein, the bump ignition mechanism is used to light the one-level powder charge, for piston rod 1 provides power;
Referring to Fig. 3, there is central blind hole piston rod 1 top, and last central blind hole end has the oblique pore 32 of 2 symmetries, and there is central blind hole the below, the side of below central blind hole has 31,3 uniform air vents 31 of 3 uniform air vents to be communicated with the central blind hole of piston rod 1 below;
Piston rod 2 bottoms connect flow switch 3, and piston rod 1 passes piston rod 2 and contacts fully with flow switch 3 end faces, a locking nut 4 and set tins 5 and be connected with flow switch 3 successively; The top of piston rod 1 and piston rod 2 is connected one-level powder charge, bump ignition mechanism respectively;
The casing patching system comprises upper sealing ring 6, subsidy pipe 7, hollow pull rod 8, lower sealing ring 9, initial cavity 10, Expending device 11, air-flow distributor 12, two-stage ignition system 13, secondary powder charge 14, guide shoe 15;
Wherein, hollow pull rod 8 and air-flow distributor 12 have centre bore (in the present embodiment, the centre bore internal diameter of hollow pull rod 8 and air-flow distributor 12 is identical with the central blind hole internal diameter of piston rod 1 below).In air-flow distributor 12 sides, radial symmetric has 41,4 pores 41 of 4 pores and is communicated with the centre bore of air-flow distributor 12; Afterbody at air-flow distributor 12 also has 4 symmetrically arranged oblique holes 42; This oblique hole 42 provides passage for the air-flow of secondary powder charge 14; Cavity 43 in the air-flow distributor 12 is used to install two-stage ignition system 13 (referring to Fig. 4).
Piston rod 1 lower end is threaded with hollow pull rod 8, the hollow pull rod 8 lower ends air-flow distributor 12 that is threaded, air-flow distributor 12 afterbodys be threaded successively two-stage ignition system 13 and secondary powder charge 14; Connect guide shoe 15 at secondary powder charge 14 tailing screw flights;
Expending device 11 is enclosed within on the external diameter of hollow pull rod 8, and upper sealing ring 6 and lower sealing ring 9 are positioned at subsidy pipe 7 two ends, and manages 7 matched in clearance with subsidy, and subsidy pipe 7 and initial cavity 10 are threaded; Hollow pull rod 8 after the assembling, air-flow distributor 12 and Expending device 11 penetrate subsidy pipe 7, air-flow distributor 12 sealing surfaces initial cavity 10 lower edges of submerging fully.
Piston rod 1, flow switch 3, hollow pull rod 8, Expending device 11, air-flow distributor 12, two-stage ignition system 13 and secondary powder charge 14 are respectively fitted with the sealing ring of corresponding specification;
The gases at high pressure that the one-level powder charge produces promote piston rod 1 and flow switch 3 does relative motion, and hollow pull rod 8 drive Expending devices 11 move upward with air-flow distributor 12 relative subsidies pipes 7 and by lower sealing ring 9, form the hole enlargement chamber.
The gases at high pressure that the one-level powder charge produces are by 3 uniform air vents 31 in side of oblique pore 32 in piston rod 1 upper end and central blind hole, and 13 igniting of the centre bore of hollow pull rod 8 and air-flow distributor 12 percussion two-stage ignition system, light secondary powder charge 14.
The top of secondary powder charge 14 is unit powder columns of cigarette burning structure, pour into the unit powder column of constant weight by certain-length, required unit powder column quantity is according to the subsidy length computation, solved the limitation of existing overhead powder charge dose deficiency, reached and to subsidize the purpose that the random length cover decreases section.
Expending device 11 outward appearances are cone structure; described initial cavity 10 is used at process protection Expending device 11 and the air-flow distributor 12 of going into the well; behind piston rod 1 and flow switch 3 relative motions pulling Expending device 11 and air-flow distributor 12 formation hole enlargement chambeies, initial cavity 10 is finished its mission.
Expending device 11 outward appearances are cone structure, and initial cavity 10 is interior back taper structure, and the cooperation of Expending device 11 and initial cavity 10 is used to guarantee that package unit can transfer smoothly to position to be subsidized, and realize that subsidy pipe 7 outer walls are close to the complete hole enlargement of internal surface of sleeve pipe.This kind mode cooperates satisfies the whole system external diameter to go into the well requirement, guarantees that whole system can transfer to position to be subsidized, down-hole smoothly.
Fig. 2 is subsidy pipe 7 external surfaces and the sleeve pipe 16 inner surfaces schematic diagram of combining closely after the hole enlargement, and sealed at both ends section reaches interference fit, reaches stationary fit in the middle of the seal section.
When gas power bushing patch device with large drift diameter of the present invention uses, to subsidize device by the transmission tubing string and transfer to position to be subsidized, down-hole, light the one-level powder charge by the mode that the bump ignition mechanism is clashed into, the gases at high pressure that the one-level powder charge produces are by 2 oblique pores 32 of the symmetry on the piston rod 1, promoting piston rod 1 and flow switch 3 does relative motion, separate with flow switch 3 lower surfaces piston rod 1 upper surface, flow switch 3 upper sealing gaskets are by piston rod 1 lower end uniform 3 radially during air vent 31, air-flow distributor 12 subsidy pipe 7 relatively moves upward and passes through lower sealing ring 9, form the hole enlargement chamber, gases at high pressure uniform through piston rod 1 lower end 3 radially air vent 31 holes enter piston rod 1 lower end central blind hole, through hollow pull rod 8 centre bores and air-flow distributor 12 centre bores, percussion two-stage ignition system 13, light secondary powder charge 14, the residual gas of one-level powder charge enters the hole enlargement chamber by symmetrically arranged 4 the oblique holes 42 of air-flow distributor 12 afterbodys, promoting Expending device 11 moves upward, make 7 hole enlargements of subsidy pipe, subsidy pipe 7 outer walls are combined closely with sleeve pipe 16 inwalls, finish big latus rectum subsidy.After subsidy was finished, package unit can propose well head, need not to carry out the operation of secondary tubing string, and the shaft bottom does not have junk.
In the practical application; at first need to carry out the assembling respectively of gas power instrument and casing patching system on ground; transport the job site, oil field to; earlier the casing patching system is lowered to well head; collude the gas power instrument of slinging greatly with workover rig; with hollow pull rod 8 upper ends that are threaded, piston rod 1 lower end of gas power instrument; intact back backspin sets tube 5 and compresses subsidy pipe 7 upper ends; tightening locking nut 4 prevents to release; the two is lowered to well head; connect two protection tubing strings, orientation spool successively in the gas power upper tool part, connect the transmission tubing string at last.
After how many endowels calculating is lowered to according to projected depth, position with logging truck, explain the orientation spool position, make and treat that the subsidy section is on the subsidy pipe between seal section and the lower seal section with adjusting the pipe nipple adjustment subsidy system place degree of depth, repeated calculation is confirmed the caber igniting of errorless back, if well head has overflow, can release gas automatically after system works is intact, one bigger overflow can appear in well head.Survey this well hole diameter with logging truck after tripping out transmission tubing string and gas power instrument, can verify whether the subsidy position correctly reaches latus rectum size in the mensuration subsidy back; Suppress in the upper and lower respective packer that is lowered to respectively of subsidy section, can measure subsidy back pressure-bearing.
Claims (6)
1. a gas power bushing patch device with large drift diameter is made up of gas power system and casing patching system, it is characterized in that:
Described gas power system comprises one-level powder charge, bump ignition mechanism, piston rod (1), piston rod (2), flow switch (3), locking nut (4) and sets tin (5), wherein, the bump ignition mechanism is used to light the one-level powder charge, for piston rod (1) provides power;
There is last central blind hole described piston rod (1) top, there is the oblique pore (32) of 2 symmetries last central blind hole lower end, there is following central blind hole piston rod (1) below, there are 3 uniform air vents (31) side of central blind hole under being positioned at, and 3 uniform air vents (31) are communicated with the following central blind hole of piston rod (1) below;
Described piston rod (2) bottom connects flow switch (3), and piston rod (1) passes piston rod (2) and contacts fully with flow switch (3) end face, locking nut (4) with set tin (5) and be connected with flow switch (3) successively; The top of piston rod (1) and piston rod (2) is connected one-level powder charge, bump ignition mechanism respectively;
Described casing patching system comprises upper sealing ring (6), subsidy pipe (7), hollow pull rod (8), lower sealing ring (9), initial cavity (10), Expending device (11), air-flow distributor (12), two-stage ignition system (13), secondary powder charge (14), guide shoe (15);
Wherein, hollow pull rod (8) and air-flow distributor (12) have centre bore; In air-flow distributor (12) side, radial symmetric has 4 pores, and 4 pores are communicated with the centre bore of air-flow distributor (12);
Afterbody at air-flow distributor (12) also has 4 symmetrically arranged oblique holes; This oblique hole is that the air-flow of secondary powder charge (14) provides passage;
Piston rod (1) lower end is threaded with hollow pull rod (8), hollow pull rod (8) the lower end air-flow distributor (12) that is threaded, air-flow distributor (12) afterbody be threaded successively two-stage ignition system (13) and secondary powder charge (14); Connect guide shoe (15) at secondary powder charge (14) tailing screw flight; Expending device (11) is enclosed within on the external diameter of hollow pull rod (8), and upper sealing ring (6) and lower sealing ring (9) are positioned at subsidy pipe (7) two ends, and manages (7) matched in clearance with subsidy, and subsidy pipe (7) and initial cavity (10) are threaded; Hollow pull rod after the assembling (8), air-flow distributor (12) and Expending device (11) penetrate subsidy pipe (7), air-flow distributor (12) sealing surface initial cavity (10) lower edge of submerging fully.
2. gas power bushing patch device with large drift diameter as claimed in claim 1, it is characterized in that, the gases at high pressure that described one-level powder charge produces promote piston rod (1) and flow switch (3) does relative motion, the relative subsidy pipe with air-flow distributor (12) of hollow pull rod (8) drive Expending device (11) (7) moves upward and by lower sealing ring (9), forms the hole enlargement chamber.
3. gas power bushing patch device with large drift diameter as claimed in claim 1, it is characterized in that, the gases at high pressure that described two-stage ignition system (13) produces by the one-level powder charge pass through the oblique pore (32) of piston rod (1) upper end and 3 the uniform air vents in side (31) of following central blind hole, and the centre bore of hollow pull rod (8) and air-flow distributor (12) percussion igniting, light secondary powder charge (14).
4. gas power bushing patch device with large drift diameter as claimed in claim 1, it is characterized in that, described secondary powder charge (14) is the cigarette burning structure of top sparking mode, pours into the unit powder column of constant weight by certain-length, and the quantity of required unit powder column is according to the subsidy length computation.
5. gas power bushing patch device with large drift diameter as claimed in claim 1; described initial cavity (10) is used for protecting Expending device (11) and air-flow distributor (12) in the process of going into the well; behind piston rod (1) and flow switch (3) relative motion pulling Expending device (11) and air-flow distributor (12) formation hole enlargement chamber, initial cavity (10) is finished its mission.
6. gas power bushing patch device with large drift diameter as claimed in claim 1, it is characterized in that, described Expending device (11) outward appearance is cone structure, described initial cavity (10) is interior back taper structure, the cooperation of Expending device (11) and initial cavity (10), be used to guarantee that package unit can transfer smoothly to position to be subsidized, and realize that subsidy pipe (7) outer wall is close to the complete hole enlargement of internal surface of sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100218195A CN101575952B (en) | 2009-04-02 | 2009-04-02 | Gas power bushing patch device with large drift diameter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100218195A CN101575952B (en) | 2009-04-02 | 2009-04-02 | Gas power bushing patch device with large drift diameter |
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| CN101575952A CN101575952A (en) | 2009-11-11 |
| CN101575952B true CN101575952B (en) | 2011-11-16 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777123B (en) * | 2012-05-02 | 2014-04-02 | 西南石油大学 | High-expansibility naked eye suspension adhering system and method |
| CN108457612B (en) * | 2018-03-12 | 2020-07-03 | 张佳彦 | Chemical method for repairing petroleum casing pipe |
| CN110485957A (en) * | 2019-08-20 | 2019-11-22 | 成都若克石油技术开发有限公司 | Disposable setting tool |
Citations (4)
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|---|---|---|---|---|
| CA2509414A1 (en) * | 2004-02-20 | 2005-08-20 | Desmond Quinn | Method and apparatus for positioning a sleeve down hole in a hydrocarbon producing well and pipelines |
| CN2725508Y (en) * | 2004-08-30 | 2005-09-14 | 邹钢 | Pnoumatic pushing device used for oil well casing pipe sealing |
| EP1640559A1 (en) * | 2001-04-19 | 2006-03-29 | Halliburton Energy Services, Inc. | Wireline retrievable safety valve with radial cutting device |
| CN2825922Y (en) * | 2005-07-07 | 2006-10-11 | 西安近代化学研究所 | Power apparatus for casing patching device |
-
2009
- 2009-04-02 CN CN2009100218195A patent/CN101575952B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1640559A1 (en) * | 2001-04-19 | 2006-03-29 | Halliburton Energy Services, Inc. | Wireline retrievable safety valve with radial cutting device |
| CA2509414A1 (en) * | 2004-02-20 | 2005-08-20 | Desmond Quinn | Method and apparatus for positioning a sleeve down hole in a hydrocarbon producing well and pipelines |
| CN2725508Y (en) * | 2004-08-30 | 2005-09-14 | 邹钢 | Pnoumatic pushing device used for oil well casing pipe sealing |
| CN2825922Y (en) * | 2005-07-07 | 2006-10-11 | 西安近代化学研究所 | Power apparatus for casing patching device |
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Effective date of registration: 20180612 Address after: 710061 168 zhangeight East Road, Yanta District, Xi'an, Shaanxi Patentee after: North Schlumberger Oilfield Technology (Xi'an) Co., Ltd. Address before: 710065 168 zhangeight East Road, Yanta District, Xi'an, Shaanxi Patentee before: Xi'an Inst. of Modern Chemistry |
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