CN103775017A - Fishing method for broken rod and side fishing device used in method - Google Patents
Fishing method for broken rod and side fishing device used in method Download PDFInfo
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- CN103775017A CN103775017A CN201210493565.9A CN201210493565A CN103775017A CN 103775017 A CN103775017 A CN 103775017A CN 201210493565 A CN201210493565 A CN 201210493565A CN 103775017 A CN103775017 A CN 103775017A
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Abstract
The invention discloses a fishing method for a broken rod and a side fishing device used in the method. The method comprises the steps that the side fishing device is put into the position of the broken rod from a well drilling opening, then a drilling rod is utilized for exerting transverse force or rotating force on the side fishing device so as to enable the side fishing device to be close to the broken rod from the side face, a clamping opening of an opening slip is clamped on the thin rod body of the broken rod, the drilling rod is pulled upwards to drive the thick portion of the broken rod to enter an opening groove in the middle segment of a grooved cylinder body, and the broken rod is pulled out of the well drilling opening. When the geometric appearance of the top of the broken rod is irregular, the fishing work can be directly carried out without adopting the milling method, the required time and equipment in accident handling are reduced, the accident handling process is greatly simplified, the time for accident handling is reduced, the well drilling efficiency is improved, and well drilling cost is saved. The problem that when the geometric appearance of the top of the broken rod is irregular, fishing is difficult is solved, particularly when milling work cannot be carried out on the thick segment, the downhole accident can be rapidly solved, and the heavy losses caused by scrapping of the whole well is prevented.
Description
Technical field
the present invention relates to a kind of Refloatation method of disconnected bar and side used and drag for device, belong to the disconnected rod salvaging method in down-hole and technical field of tools in drilling engineering.
Background technology
along with the development of petroleum and natural gas production technique, drilling depth is constantly deepened, and this just causes drilling failure more frequent and complicated, and a lot of drilling failures can not solve by conventional method.
at present in drilling engineering, if there is drill rod breaking accident, the conventional practice is to adopt from well head, fishing tool to be put into down-hole and carry out fishing, and the disconnected masthead portion that fishing tool normally clips fracture pulls it.This Refloatation method and the fishing tool that uses are had relatively high expectations to disconnected bar fracture location, require the top of disconnected bar to have the geometric shape of rule relatively.As resolute masthead portion does not have well-regulated geometric shape, could salvage after must adopting the method for milling will irregular part to eliminate, this method takes time and effort, and downhole condition is had relatively high expectations.Particularly break masthead portion in the time of well " pregnant " section, cannot carry out milling operation at all.Occur after this situation, just can only abandon lower drilling tool, adopt window sidetracking or drilling well is scrapped, cause great manpower and materials waste.
Summary of the invention
the object of the invention is to, provide a kind of Refloatation method of disconnected bar and side used to drag for device.Without any requirement to disconnected bar top shape, need not adopt the method for milling can directly carry out fishing; To the less demanding of masthead portion and well that break, can adapt to the fishing of " pregnant " borehole segments.To overcome the deficiencies in the prior art.
technical scheme of the present invention:
a Refloatation method for disconnected bar, the method is dragged for device by side will break bar from salvaging out in drilling well; Side is dragged for device and is comprised fluting cylindrical shell, and fluting cylindrical shell top is provided with the tool joint that is connected use with drilling rod or bendable toggle, and fluting cylinder body bottom is provided with opening slips; While salvaging disconnected bar, by drilling rod, side being dragged for to device puts to disconnected bar position from drilling well mouth, then utilize drilling rod offside to drag for device and apply lateral force or revolving force, make side drag for device and approach from the side disconnected bar, the bayonet socket of opening slips is stuck on the body of rod that disconnected bar is thinner, upwards pull drilling rod band dynamic circuit breaker bar thicker part to divide and enter in the stage casing open slot of fluting cylindrical shell, the bar that will break pull-out drilling well mouth.
in preceding method, the top of described fluting cylindrical shell and opening slips junction is provided with lead-in chamfered, by lead-in chamfered and coordinating that disconnected bar top thicker part divides, realize the automatic centering function of disconnected bar, divide in the stage casing open slot that enters fluting cylindrical shell with dynamic circuit breaker bar thicker part.
in preceding method, described opening slips is slidably connected with fluting cylinder body bottom; And lead and transmitting torque by guide key.
in preceding method, the outer conical surface of described opening slips coordinates with inner circle or the internal conical surface of fluting cylinder body bottom, on opening slips, elastic groove is set simultaneously; When opening slips blocks after disconnected bar, opening slips moves down under the effect of disconnected bar deadweight, and opening slips internal diameter is shunk automatically, prevents that disconnected bar from coming off from opening slips.
in preceding method, described opening slips prevents that by the pawl of inner headed face disconnected bar from sliding in opening slips.
side used in preceding method is dragged for device, comprises fluting cylindrical shell, and fluting cylindrical shell top is provided with the tool joint that is connected use with drilling rod or bendable toggle, and fluting cylinder body bottom is provided with opening slips.
aforementioned side is dragged in device, and described fluting cylindrical shell is cylindric, and the top of cylinder is provided with the internal thread being connected with tool joint, and in cylinder, hypomere is provided with open slot, the depth D of stage casing open slot is greater than cylinder radius R, and the depth d of hypomere open slot is less than cylinder radius R; In hypomere open slot, be provided with opening slips; The upper surface of hypomere open slot is provided with lead-in chamfered.
aforementioned side is dragged in device, described opening slips to be shaped as open circles tubular, the cross sectional shape of opening slips is C shape; The cylindrical of pipe epimere is the face of cylinder, and the cylindrical of pipe hypomere is taper seat; The endoporus of opening slips is stepped hole, and epimere is large diameter hole, and hypomere is small diameter bore, and large diameter hole is connected through chamfered transition with small diameter bore; The hole wall of small diameter bore is provided with one group of elastic groove being uniformly distributed along the circumference; The hole wall of small diameter bore is provided with anti-slop serrations; The cylindrical of opening slips is provided with keyway.
aforementioned side is dragged in device, and the bottom of described fluting cylindrical shell is provided with guide key, and the keyway on guide key and opening slips cylindrical is slidably connected.
aforementioned side is dragged in device, and the fluting cylindrical shell of described opening slips top is provided with stop screw.
compared with prior art, the present invention approaches disconnected bar from the side by the opening slips that is located at fluting cylinder body bottom, the bayonet socket of opening slips is stuck on the body of rod that disconnected bar is thinner, upwards pulls drilling rod band dynamic circuit breaker bar thicker part to divide and enter in the stage casing open slot of fluting cylindrical shell, the bar that will break pull-out drilling well mouth.In the time that disconnected masthead portion geometric shape is irregular, need not adopt the method for milling can directly carry out fishing, reduce required time and the equipment of processing accident, simplify greatly accident processing procedure, reduce break down time, improved drilling efficiency, saved drilling cost.Solve the salvaging difficult problem in the time that the masthead portion geometric shape that breaks is irregular.Particularly in " pregnant " section cannot carry out milling operation time, can quick solution down-hole accident, prevent that whole mouthful of well from scrapping the heavy losses that cause.
Accompanying drawing explanation
fig. 1 is schematic diagram of the present invention;
fig. 2 is step top view 1. and 2. in Fig. 1;
fig. 3 is step top view 3., 4. and 5. in Fig. 1;
fig. 4 is the schematic perspective view that side is dragged for device;
fig. 5 is the floor map of Fig. 4;
fig. 6 is the structural representation of fluting cylindrical shell;
fig. 7 is the structural representation of opening slips.
being labeled as in figure: 1-fluting cylindrical shell, 2-tool joint, 3-opening slips, 4-stage casing open slot, 5-hypomere open slot, 6-lead-in chamfered, the 7-face of cylinder, 8-taper seat, 9-large diameter hole, 10-small diameter bore, 11-inclined-plane, 12-elastic groove, 13-anti-slop serrations, 14-keyway, 15-guide key, 16-stop screw, 17-side are dragged for device, 18-drilling well, the disconnected bar of 19-.
The specific embodiment
below in conjunction with accompanying drawing, the present invention is described in further detail, but not as any limitation of the invention.
a Refloatation method for disconnected bar, as shown in Figure 1 to Figure 3.The method is dragged for device 17 by side will break bar 19 from the interior salvaging of drilling well 18 out.Side is dragged for device as shown in Figure 4, comprises fluting cylindrical shell 1, and fluting cylindrical shell 1 top is provided with the tool joint 2 that is connected use with drilling rod or bendable toggle, and fluting cylindrical shell 1 bottom is provided with opening slips 3; While salvaging disconnected bar 19, by drilling rod, side being dragged for to device 17 puts to disconnected bar 19 positions (seeing that the step of Fig. 1 1.) from the well head of drilling well 18, then utilize drilling rod offside to drag for device 17 and apply lateral force or revolving force, make side drag for device 17 and approach from the side step that disconnected bar 19(is shown in Fig. 1 2.), the bayonet socket of opening slips 3 is stuck on the body of rod that disconnected bar 19 is thinner (seeing that the step of Fig. 1 3.), upwards pull drilling rod band dynamic circuit breaker bar 19 thicker parts to divide to enter in the stage casing open slot 4 of fluting cylindrical shell 1 (seeing that the step of Fig. 1 4.), disconnected bar 19 is pulled out to the well head (seeing that the step of Fig. 1 5.) of drilling well 18.Fluting cylindrical shell 1 is provided with lead-in chamfered 6(with the top of opening slips 3 junctions and sees Fig. 5 and Fig. 6), by lead-in chamfered 6 and coordinating that disconnected bar 19 top thicker parts divide, realize the automatic centering function of disconnected bar 19, divide in the stage casing open slot 4 that enters fluting cylindrical shell 1 with dynamic circuit breaker bar 19 thicker parts.Opening slips 3 is connected with 1 basal sliding of fluting cylindrical shell; And by guide key 15 guiding and transmitting torques (seeing Fig. 5 and Fig. 6).The outer conical surface of opening slips 3 coordinates with inner circle or the internal conical surface of fluting cylindrical shell 1 bottom, elastic groove 12(is set on opening slips 3 and sees Fig. 7 simultaneously); When opening slips 3 blocks after disconnected bar 19, under the effect that opening slips 3 is conducted oneself with dignity at disconnected bar 19, move down, opening slips 3 internal diameters are shunk automatically, prevent that disconnected bar 19 from coming off from opening slips 3.Opening slips prevents that by the pawl of inner headed face disconnected bar from sliding in opening slips.
preceding method side used is dragged for device, as shown in Figure 4 and Figure 5.Comprise fluting cylindrical shell 1, fluting cylindrical shell 1 top is provided with the tool joint 2 that is connected use with drilling rod or bendable toggle, and fluting cylindrical shell 1 bottom is provided with opening slips 3.Described fluting cylindrical shell 1 as shown in Figure 6.Fluting cylindrical shell 1 is cylindric, the top of cylinder is provided with the internal thread being connected with tool joint, in cylinder, hypomere is provided with open slot, the depth D of stage casing open slot 4 is greater than cylinder radius R (see figure 5), the depth d of hypomere open slot 5 is less than cylinder radius R (see figure 5); In hypomere open slot 5, be provided with opening slips 3; The upper surface of hypomere open slot 5 is provided with lead-in chamfered 6.Described opening slips 3 as shown in Figure 7, opening slips 3 to be shaped as open circles tubular, the cross sectional shape of opening slips 3 is C shape; The cylindrical of pipe epimere is the face of cylinder 7, and the cylindrical of pipe hypomere is taper seat 8; The endoporus of opening slips 3 is stepped hole, and epimere is large diameter hole 9, and hypomere is small diameter bore 10, and through inclined-plane, 11 transition are connected large diameter hole 9 with small diameter bore 10; The hole wall of small diameter bore 10 is provided with one group of elastic groove being uniformly distributed along the circumference 12; The hole wall of small diameter bore 10 is provided with anti-slop serrations 13; The cylindrical of opening slips 3 is provided with keyway 14.The bottom of fluting cylindrical shell 1 is provided with guide key 15(and sees Fig. 6), guide key 15 is slidably connected with the keyway 14 on opening slips 3 cylindricals.The fluting cylindrical shell 1 of described opening slips 3 tops is provided with stop screw 16.
to some supplementary notes of the present invention
" pregnant " section described in background information, refers in drilling well and has the diameter of a section to become suddenly the large larger space section forming.Disconnected bar is not necessarily vertical in " pregnant " section, also can tilt, but gradient generally can be very not large.Because epimere is minor diameter well head, so the grinding tool putting down from well head is difficult to approach the fracture location of disconnected bar, so cannot grinding.
drilling well drilling rod front used is provided with drill bit, the diameter of general drill bit is greater than the diameter of drilling rod, so there is a gap between drilling rod and the borehole wall, side of the present invention is dragged for device and can be put from the gap between drilling rod and the borehole wall to disconnected bar position.
two ends of drill is because needs are connected with other drilling rod in addition, thus two ends of drill diameter than the middle body of rod slightly larger in diameter of drilling rod some, and body of rod section in the middle of drilling rod is longer, is stuck than being easier to.Therefore opening slips 3 of the present invention is to block the middle body of rod position of disconnected bar, in the process of upwards drawing, makes drilling rod automatic capturing vertically pull out well head.
if run into " pregnant " section, can drag for device top in side of the present invention and connect a bendable toggle, making side drag for device can be on the tilted body of rod that snaps in disconnected bar of certain angle.Bendable toggle is existing instrument.
side of the present invention is dragged for device can be by following parameter designing and making
1 is suitable for well 9 1/2 ";
2 salvage fish 5 " drilling rod;
3 joint screw thread NC50;
4 maximum tensile load 1000kN;
5 200 ℃ of maximum operating temperatures;
6 are suitable for well temperature-40 ℃～150 ℃;
7 salvage the degree of depth apart from the masthead portion of breaking is less than 1500mm.
Claims (10)
1. a Refloatation method for disconnected bar, is characterized in that: the method is dragged for device by side will break bar from salvaging out in drilling well; Side is dragged for device and is comprised fluting cylindrical shell, and fluting cylindrical shell top is provided with the tool joint that is connected use with drilling rod or bendable toggle, and fluting cylinder body bottom is provided with opening slips; While salvaging disconnected bar, by drilling rod, side being dragged for to device puts to disconnected bar position from drilling well mouth, then utilize drilling rod offside to drag for device and apply lateral force or revolving force, make side drag for device and approach from the side disconnected bar, the bayonet socket of opening slips is stuck on the body of rod that disconnected bar is thinner, upwards pull drilling rod band dynamic circuit breaker bar thicker part to divide and enter in the stage casing open slot of fluting cylindrical shell, the bar that will break pull-out drilling well mouth.
2. method according to claim 1, it is characterized in that: the top of described fluting cylindrical shell and opening slips junction is provided with lead-in chamfered, by lead-in chamfered and coordinating that disconnected bar top thicker part divides, realize the automatic centering function of disconnected bar, divide in the stage casing open slot that enters fluting cylindrical shell with dynamic circuit breaker bar thicker part.
3. method according to claim 1, is characterized in that: described opening slips is slidably connected with fluting cylinder body bottom; And lead and transmitting torque by guide key.
4. method according to claim 1, is characterized in that: the outer conical surface of described opening slips coordinates with inner circle or the internal conical surface of fluting cylinder body bottom, and the while arranges elastic groove on opening slips; When opening slips blocks after disconnected bar, opening slips moves down under the effect of disconnected bar deadweight, and opening slips internal diameter is shunk automatically, prevents that disconnected bar from coming off from opening slips.
5. method according to claim 1, is characterized in that: described opening slips prevents that by the pawl of inner headed face disconnected bar from sliding in opening slips.
6. one kind is dragged for device according to method side used described in the arbitrary claim of claim 1-5, it is characterized in that: comprise fluting cylindrical shell (1), fluting cylindrical shell (1) top is provided with the tool joint (2) that is connected use with drilling rod or bendable toggle, and fluting cylindrical shell (1) bottom is provided with opening slips (3).
7. side is dragged for device according to claim 6, it is characterized in that: described fluting cylindrical shell (1) is for cylindric, the top of cylinder is provided with the internal thread being connected with tool joint, in cylinder, hypomere is provided with open slot, the depth D of stage casing open slot (4) is greater than cylinder radius R, and the depth d of hypomere open slot (5) is less than cylinder radius R; In hypomere open slot (5), be provided with opening slips (3); The upper surface of hypomere open slot (5) is provided with lead-in chamfered (6).
8. side is dragged for device according to claim 7, it is characterized in that: described opening slips (3) to be shaped as open circles tubular, the cross sectional shape of opening slips (3) is C shape; The cylindrical of pipe epimere is the face of cylinder (7), and the cylindrical of pipe hypomere is taper seat (8); The endoporus of opening slips (3) is stepped hole, and epimere is large diameter hole (9), and hypomere is small diameter bore (10), and through inclined-plane, (11) transition is connected large diameter hole (9) with small diameter bore (10); The hole wall of small diameter bore (10) is provided with one group of elastic groove being uniformly distributed along the circumference (12); The hole wall of small diameter bore (10) is provided with anti-slop serrations (13); The cylindrical of opening slips (3) is provided with keyway (14).
9. side is dragged for device according to claim 8, it is characterized in that: the bottom of described fluting cylindrical shell (1) is provided with guide key (15), and guide key (15) is slidably connected with the keyway (14) on opening slips (3) cylindrical.
10. side is dragged for device according to claim 9, it is characterized in that: the fluting cylindrical shell (1) of described opening slips (3) top is provided with stop screw (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493565.9A CN103775017B (en) | 2012-11-28 | 2012-11-28 | Device is dragged in a kind of Refloatation method and side used of disconnected bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493565.9A CN103775017B (en) | 2012-11-28 | 2012-11-28 | Device is dragged in a kind of Refloatation method and side used of disconnected bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103775017A true CN103775017A (en) | 2014-05-07 |
| CN103775017B CN103775017B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210493565.9A Active CN103775017B (en) | 2012-11-28 | 2012-11-28 | Device is dragged in a kind of Refloatation method and side used of disconnected bar |
Country Status (1)
| Country | Link |
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| CN (1) | CN103775017B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266033A (en) * | 2014-09-19 | 2015-01-07 | 中国石油天然气集团公司 | Integral zigzag slip for pipeline |
| CN104266032A (en) * | 2014-09-19 | 2015-01-07 | 中国石油天然气集团公司 | Mechanical first-aid repair clamp for pipeline |
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| CN2611580Y (en) * | 2003-04-20 | 2004-04-14 | 杨思忠 | Self-locking reversible sucker rod overshot |
| CN2628713Y (en) * | 2003-07-22 | 2004-07-28 | 中国石油化工股份有限公司中原油田分公司采油五厂 | Sucker rod fisher |
| CN201027514Y (en) * | 2007-05-18 | 2008-02-27 | 安善堂 | Sucker rod fisher |
| US7357183B2 (en) * | 2005-09-09 | 2008-04-15 | Venturi Oil Tools | Magnetic fishing tool and method |
| CN201574710U (en) * | 2009-12-30 | 2010-09-08 | 贵州高峰石油机械股份有限公司 | Abrasion-resistant fishing head of cone fisher |
| CN203161150U (en) * | 2012-11-28 | 2013-08-28 | 贵州高峰石油机械股份有限公司 | Side fisher for fishing underground broken rod |
| CN204212729U (en) * | 2014-09-28 | 2015-03-18 | 辽河石油勘探局 | A kind of without box cupling shaft fishing tool |
-
2012
- 2012-11-28 CN CN201210493565.9A patent/CN103775017B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2611580Y (en) * | 2003-04-20 | 2004-04-14 | 杨思忠 | Self-locking reversible sucker rod overshot |
| CN2628713Y (en) * | 2003-07-22 | 2004-07-28 | 中国石油化工股份有限公司中原油田分公司采油五厂 | Sucker rod fisher |
| US7357183B2 (en) * | 2005-09-09 | 2008-04-15 | Venturi Oil Tools | Magnetic fishing tool and method |
| CN201027514Y (en) * | 2007-05-18 | 2008-02-27 | 安善堂 | Sucker rod fisher |
| CN201574710U (en) * | 2009-12-30 | 2010-09-08 | 贵州高峰石油机械股份有限公司 | Abrasion-resistant fishing head of cone fisher |
| CN203161150U (en) * | 2012-11-28 | 2013-08-28 | 贵州高峰石油机械股份有限公司 | Side fisher for fishing underground broken rod |
| CN204212729U (en) * | 2014-09-28 | 2015-03-18 | 辽河石油勘探局 | A kind of without box cupling shaft fishing tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266033A (en) * | 2014-09-19 | 2015-01-07 | 中国石油天然气集团公司 | Integral zigzag slip for pipeline |
| CN104266032A (en) * | 2014-09-19 | 2015-01-07 | 中国石油天然气集团公司 | Mechanical first-aid repair clamp for pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103775017B (en) | 2016-04-13 |
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