CN113266295A - Sucker rod fishing and back-off device and method along with pipe - Google Patents
Sucker rod fishing and back-off device and method along with pipe Download PDFInfo
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- CN113266295A CN113266295A CN202010095485.2A CN202010095485A CN113266295A CN 113266295 A CN113266295 A CN 113266295A CN 202010095485 A CN202010095485 A CN 202010095485A CN 113266295 A CN113266295 A CN 113266295A
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- reversing
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- 239000003129 oil well Substances 0.000 description 10
- 238000005086 pumping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000561734 Celosia cristata Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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Abstract
The invention relates to a sucker rod fishing and reversing device along with a pipe and a method thereof, wherein the sucker rod fishing and reversing device along with the pipe is arranged between an oil pipe which is already broken out and a sucker rod of which the top end extends into the oil pipe, the sucker rod fishing and reversing device along with the pipe comprises an oil pipe locking piece connected with the oil pipe and a sucker rod locking and reversing piece connected with the sucker rod, the oil pipe locking piece and the sucker rod locking and reversing piece are both of tubular structures which are arranged along the vertical direction, the oil pipe locking piece is fixedly sleeved on the outer side of the bottom end of the oil pipe, the sucker rod locking and reversing piece is fixedly sleeved on the outer side of the sucker rod, and the top end of the sucker rod locking and reversing piece is connected with the bottom end of the oil pipe locking piece. The invention solves the technical problems of difficult fishing of the sucker rod along with the pipe and complex operation.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering, in particular to a sucker rod fishing and back-off device and method along with a pipe.
Background
In the oil exploitation process, when the oil-well pump is examined, the plunger of the oil-well pump is blocked due to sand in the well, wax deposition in the shaft and other conditions, the phenomenon that the oil-well pump cannot be normally lifted occurs, when the oil-well pump is lifted and released for operation, the oil-well pump can be broken and taken off, the lifting load of the machine is too large for avoiding the breakage and taking off of the oil-well pump, the on-site operation is usually carried out by adopting a mode of reversing the oil-well pump, after all the reversed oil-well pumps are lifted, the oil pipe is continuously lifted, and the problem that the height of the oil-well pump cannot be determined can occur until the last oil pipe of the oil-well pump is exposed.
As shown in fig. 1, where H is the distance from the top of the tripped-out tubing 904 to the maximum height at which the work machine can continue to be lifted, and L is the length of the sucker rod 903 inside the tripped-out tubing 904, several situations may occur during field operations:
when H is larger than or equal to L (namely H is larger than or equal to L) and a coupling (not shown) is connected to a sucker rod 903 in an oil pipe 904 which is broken out, the oil pipe 904 which is broken out can move to a pipe bridge, the sucker rod 903 exposed above a wellhead 901 can continue to be subjected to unfreezing operation by using an elevator 902, and the sucker rod 903 can continue to be subjected to back-off operation under the condition that the sucker rod can not be unfreezed;
when H is larger than or equal to L (namely H is larger than or equal to L) and no coupling is arranged on the sucker rod 903 in the broken oil pipe 904, the broken oil pipe 904 can be moved to a pipe bridge, and the sucker rod 903 exposed above the wellhead 901 can be sawed off manually or reversed;
thirdly, when H is smaller than L (namely H is smaller than L) and a coupling (not shown) is connected to the sucker rod 903 in the broken oil pipe 904, the broken oil pipe 904 cannot be directly moved to a pipe bridge, after the sucker rod 903 is broken off from the coupling, the broken oil pipe 904 is moved to the pipe bridge, the sucker rod 903 exposed above the wellhead 901 can be continuously unlocked by the elevator 902, and the back-off operation is continuously carried out under the condition that the sucker rod 903 cannot be unlocked;
fourthly, when H is smaller than L (namely H is smaller than L) and no coupling exists on the sucker rod 903 positioned in the broken oil pipe 904, the sucker rod 903 is usually sawed off manually, and when one oil pipe is continuously pulled out, if the sucker rod 903 is connected with a coupling, the treatment can be continuously carried out by adopting a third mode; if no coupling is exposed on the sucker rod 903, the sucker rod 903 is sawed manually to continue processing until the coupling is exposed on the sucker rod 903.
As can be seen from the above four situations, when H is greater than or equal to L, the broken oil pipe 904 can be moved to the pipe bridge, and the oil pumping rod 903 exposed above the wellhead 901 can continue to be processed (such as the oil pumping rod is unlocked, reversed or sawed manually); when H is less than L, the oil pipe 904 which is broken out can not be moved to the pipe bridge, the sucker rod 903 can be clamped in the oil pipe 904 which is broken out, the handling is very troublesome, the labor intensity of workers is increased, the well repairing efficiency is reduced, and the working time and the working cost are greatly increased.
Aiming at the problems of difficult fishing and complex operation of the sucker rod along with the pipe in the prior art, an effective solution is not provided at present.
Therefore, the inventor provides the device and the method for fishing and reversing the sucker rod along with the pipe by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a sucker rod fishing and reversing device along with a pipe and a method thereof, wherein an oil pipe locking part and a sucker rod locking and reversing piece are used for connecting an oil pipe which is already broken and a sucker rod, the primary unfreezing operation of the sucker rod can be carried out by lifting the oil pipe, the reversing operation of the sucker rod can be completed by rotating the sucker rod locking and reversing piece under the condition of unfreezing, the oil pipe is lifted until a coupling on the sucker rod is exposed, the pulling-out operation of all pipe columns can be completed, the structure is simple, the operation is convenient, the sucker rod does not need to be sawed manually by workers, the labor intensity is greatly reduced, and the well repairing operation efficiency is effectively improved.
The purpose of the invention can be realized by adopting the following technical scheme:
the invention provides a sucker rod fishing and back-off device along with a pipe, which is arranged between an oil pipe which is already broken off and a sucker rod the top end of which extends into the oil pipe, and comprises an oil pipe locking piece connected with the oil pipe and a sucker rod locking and back-off piece connected with the sucker rod, wherein:
the oil pipe retaining member with the sucker rod locking back-off member is the tubular structure that sets up along vertical direction, the fixed cover of oil pipe retaining member is located the bottom outside of oil pipe, the fixed cover of sucker rod locking back-off member is located the outside of sucker rod, the top of sucker rod locking back-off member with the bottom of oil pipe retaining member is connected.
In a preferred embodiment of the present invention, an accommodating chamber communicated with the inside of the oil pipe locking member is formed on an inner wall of the oil pipe locking member, a limiting boss is disposed on an outer wall of a top portion of the sucker rod locking back-off member, the top portion of the sucker rod locking back-off member extends into the accommodating chamber, and a bottom portion of the limiting boss abuts against an inner wall of a bottom portion of the accommodating chamber.
In a preferred embodiment of the present invention, the limiting boss is an annular structure disposed along a circumferential direction of the sucker rod locking back-off member.
In a preferred embodiment of the present invention, the bottom end of the oil pipe extends into the accommodating chamber, the top end of the sucker rod sequentially passes through the sucker rod locking back-off and the accommodating chamber and extends into the oil pipe, and the oil pipe locking member and the sucker rod locking back-off are vertically located on the same axis, so that the oil pipe and the sucker rod are vertically located on the same axis.
In a preferred embodiment of the present invention, the inner wall of the sucker rod locking reverse-fastening member is provided with a first positioning portion for axially fixing the sucker rod locking reverse-fastening member and the sucker rod, and a second positioning portion for circumferentially fixing the sucker rod locking reverse-fastening member and the sucker rod; the first positioning part is arranged on the axial direction of the sucker rod locking back-off piece and is connected with the outer wall of the sucker rod in a clamping mode, and the second positioning part is arranged on the circumferential direction of the sucker rod locking back-off piece and is connected with the outer wall of the sucker rod in a clamping mode.
In a preferred embodiment of the present invention, the first positioning portion includes a plurality of first positioning bosses disposed along a circumferential direction of the sucker rod locking reverse fastener, each of the first positioning bosses is connected and arranged along a length direction of the sucker rod locking reverse fastener, and a cross section of each of the first positioning bosses forms a zigzag structure.
In a preferred embodiment of the present invention, the second positioning portion includes a plurality of second positioning bosses disposed along a length direction of the sucker rod locking reverse fastener, each of the second positioning bosses is connected and arranged along a circumferential direction of the sucker rod locking reverse fastener, and a cross section of each of the second positioning bosses forms a saw-toothed structure.
In a preferred embodiment of the present invention, the first positioning portion is located at an upper portion of an inner wall of the sucker rod locking reversing element, and the second positioning portion is located at a lower portion of the inner wall of the sucker rod locking reversing element.
In a preferred embodiment of the present invention, a third positioning portion for axially fixing the oil pipe locking member and the oil pipe is disposed on an inner wall of the oil pipe locking member; the third positioning part is arranged in the axial direction of the oil pipe locking part and is clamped with the outer wall of the oil pipe.
In a preferred embodiment of the present invention, the third positioning portion includes a plurality of third positioning bosses arranged along a circumferential direction of the oil pipe locking member, each of the third positioning bosses is connected and arranged along a length direction of the oil pipe locking member, and a cross section of each of the third positioning bosses forms a zigzag structure.
The invention provides a method for fishing and back-off a sucker rod along with a pipe, which comprises the following steps:
step S1: installing the sucker rod salvaging and back-off device along with the pipe between the oil pipe which is broken off and the sucker rod exposed above the well mouth;
step S2: lifting the oil pipe for releasing the blockage;
step S3: if the releasing of the clamp is successful, the oil pipe can be continuously lifted, after the coupling of the sucker rod is exposed above the wellhead, an elevator is fixedly sleeved on the outer side of the sucker rod, the sucker rod is fixed and then is broken off, the oil pipe is moved to a pipe bridge, all the sucker rods are continuously lifted, and the operation is finished;
step S4: if the releasing of the clamp fails, the sucker rod is rotated to carry out back-off on the sucker rod along with the pipe salvaging back-off device, the oil pipe is continuously lifted after the back-off, an elevator is fixedly sleeved on the outer side of the sucker rod after a coupling of the sucker rod is exposed above the wellhead, the sucker rod is disconnected after being fixed, the oil pipe is moved to a pipe bridge, and the sucker rod is continuously lifted out;
step S5: in the step S4, if all the sucker rods are pulled out, the operation is ended; and if all the sucker rods are not pulled out, pulling out a section of oil pipe until the next section of sucker rod is exposed above the wellhead, repeating the operations from the step S1 to the step S4 until all the oil pipes and the sucker rods are pulled out, and finishing the operation.
In a preferred embodiment of the present invention, before the step S1, the broken-out oil pipe is lifted above the wellhead, the top end of the sucker rod is above the wellhead, and the top end of the sucker rod extends into the oil pipe.
In a preferred embodiment of the present invention, in step S2, each third positioning boss on the inner wall of the oil pipe locking member is engaged with the outer wall of the oil pipe, each first positioning boss and each second positioning boss on the inner wall of the sucker rod locking back-off member are respectively engaged with the outer wall of the sucker rod, and the top of the sucker rod locking back-off member is connected to the bottom of the oil pipe locking member.
From the above, the sucker rod fishing and back-off device and method along with the pipe have the characteristics and advantages that: an oil pipe locking part and a sucker rod locking reverse part are arranged between an oil pipe which is broken off and a sucker rod of which the top end extends into the oil pipe, the oil pipe locking part is fixedly sleeved outside the bottom end of the oil pipe, the sucker rod locking reverse part is fixedly sleeved outside the sucker rod, the top end of the sucker rod locking reverse part is connected with the bottom end of the oil pipe locking part, under the condition that the sucker rod is blocked in the pump checking operation, the sucker rod can be preliminarily unlocked by lifting the oil pipe, if the sucker rod is preliminarily unlocked, the sucker rod can be driven to rotate by the sucker rod locking reverse part, the reverse operation of the sucker rod is completed, the lifting operation of the oil pipe until a coupling on the sucker rod is exposed can complete the lifting operation of all pipe columns, the structure is simple, the operation is convenient, the unlocking and lifting operation of the pipe columns can be completed by an operating machine, and, greatly reducing the labor intensity and effectively improving the well repairing operation efficiency.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: which is a structural schematic diagram when the sucker rod is blocked in the prior art.
FIG. 2: is a structural schematic diagram of the sucker rod fishing reversing device along with the pipe.
FIG. 3: the invention is a schematic diagram of the internal structure of the sucker rod locking back-off component in the sucker rod fishing back-off device along with the pipe.
FIG. 4: the invention is a flow chart of the method for fishing and back-off the sucker rod along with the pipe.
The reference numbers in the background art are:
901. a wellhead; 902. An elevator;
903. a sucker rod; 904. And (4) an oil pipe.
The reference numbers in the invention are:
1. a wellhead; 2. An elevator;
3. a sucker rod; 4. An oil pipe;
5. an oil pipe locking member; 501. An accommodating chamber;
6. the sucker rod locks the back-off unit; 601. A limiting boss;
602. a first positioning portion; 6021. A first positioning boss;
603. a second positioning portion; 6031. And a second positioning boss.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
Example one
As shown in figure 2, the invention provides a sucker rod fishing reversing device along with a pipe, which is arranged between an oil pipe 4 which is already broken out and a sucker rod 3 the top end of which extends into the oil pipe 4. This sucker rod is salvaged back-off device along with pipe includes the oil pipe retaining member 5 that is connected with oil pipe 4 and the sucker rod locking back-off member 6 that is connected with sucker rod 3, wherein: oil pipe retaining member 5 and sucker rod locking back-off member 6 are along the cylindric structure of vertical direction setting, and the bottom outside of oil pipe 4 is located to the upper portion fixed cover of oil pipe retaining member 5, and the outside of sucker rod 3 is located to the fixed cover of sucker rod locking back-off member 6, and the top of sucker rod locking back-off member 6 is connected with the bottom of oil pipe retaining member 5.
In the invention, an oil pipe locking piece 5 and a sucker rod locking back-off piece 6 are arranged between an oil pipe 4 which is broken off and a sucker rod 3 of which the top end extends into the oil pipe 4, the top end of the sucker rod locking back-off piece 6 is connected with the bottom end of the oil pipe locking piece 5, the oil pipe locking piece 5 is fixedly sleeved on the oil pipe 4, the sucker rod locking back-off piece 6 is fixedly sleeved on the sucker rod 3, under the condition that the sucker rod is blocked in the pump checking operation, the sucker rod 3 can be preliminarily unfreezed by lifting the oil pipe 4, if the preliminary unfreezing on the sucker rod 3 fails, the sucker rod 3 can be driven to rotate by the sucker rod locking back-off piece 6, the back-off operation of the sucker rod 3 is completed, the oil pipe 4 is lifted until a coupling on the sucker rod 3 is exposed, the lifting operation of all pipe columns can be completed, the structure is simple, the operation is convenient, and the unfreezing and the lifting operation of the pipe columns can be completed by an operating machine, need not the manual sucker rod 3 of sawing of staff, greatly reduced staff's intensity of labour effectively improves workover efficiency.
In an alternative embodiment of the present invention, as shown in fig. 2, an annular receiving chamber 501 communicated with the inside of the oil pipe locking member 5 is formed on the inner wall of the oil pipe locking member 5, a limiting boss 601 with an annular structure is arranged on the outer wall of the top of the sucker rod locking back-off member 6 along the circumference of the sucker rod locking back-off member 6, the top of the sucker rod locking back-off member 6 extends into the receiving chamber 501, and the bottom of the limiting boss 601 abuts against the inner wall of the bottom of the receiving chamber 501. The inner wall butt of spacing boss 601 through on the sucker rod locking back-off piece 6 and accommodation chamber 501 can upwards transmit the lifting force, under the condition that promotes oil pipe 4, can drive the sucker rod locking back-off piece 6 and upwards move to the sucker rod 3 of blocking carries out the operation of unfreezing. If too large load still can't unfreeze when stuck, stop to continue to promote, accommodation chamber 501 provides certain buffering and movable space for sucker rod locking back-off 6 and sucker rod 3, avoids causing sucker rod 3 to break off.
Further, as shown in fig. 2, the bottom end of the oil pipe 4 extends into the accommodating chamber 501, the top end of the sucker rod 3 sequentially passes through the sucker rod locking back-off unit 6 and the accommodating chamber 501 and extends into the oil pipe 4, and the oil pipe locking unit 5 and the sucker rod locking back-off unit 6 are located on the same axis in the vertical direction, so that the oil pipe 4 and the sucker rod 3 are located on the same axis in the vertical direction. Ensure that sucker rod locking back- off member 6 and 3 stable connections of sucker rod to and the stable connection of oil pipe retaining member 5 and oil pipe 4, at the lift in-process, vertical direction transmission can be followed to the lifting force, improves the stability of the whole work of device.
In an alternative embodiment of the present invention, as shown in fig. 3, the upper portion of the inner wall of the sucker rod locking reverse-fastening member 6 is provided with a first positioning portion 602, the lower portion of the inner wall of the sucker rod locking reverse-fastening member 6 is provided with a second positioning portion 603, the first positioning portion 602 is used for axially fixing the sucker rod locking reverse-fastening member 6 and the sucker rod 3, the second positioning portion 603 is used for circumferentially fixing the sucker rod locking reverse-fastening member 6 and the sucker rod 3, the first positioning portion 602 is clamped with the outer wall of the sucker rod 3 in the axial direction of the sucker rod locking reverse-fastening member 6, and the second positioning portion 603 is clamped with the outer wall of the sucker rod 3 in the circumferential direction of the sucker rod locking reverse-fastening member 6. Through first location portion 602 to sucker rod 3 go up the location in vertical direction to make sucker rod 3 can satisfy the requirement of lifting, fix sucker rod 3 on week through second location portion 603, thereby make sucker rod 3 can satisfy the requirement of back-off.
Specifically, as shown in fig. 3, the first positioning portion 602 includes a plurality of first positioning bosses 6021 arranged along the circumference of the sucker rod locking fastener 6, each first positioning boss 6021 is connected and arranged along the length direction of the sucker rod locking fastener 6, the cross section of each first positioning boss 6021 forms a saw-toothed structure, and the outer edge of each first positioning boss 6021 tightly clamps the outer wall of the sucker rod 3.
Specifically, as shown in fig. 3, the second positioning portion 603 includes a plurality of second positioning bosses 6031 arranged along the length direction of the sucker rod locking fastener 6, each second positioning boss 6031 is arranged along the circumferential connection of the sucker rod locking fastener 6, the cross section of each second positioning boss 6031 forms a saw-toothed structure, and the outer edge of each second positioning boss 6031 is clamped on the outer wall of the sucker rod 3.
In an alternative embodiment of the present invention, a third positioning part (not shown) is disposed on the inner wall of the oil pipe locking member 5, and is used for fixing the oil pipe locking member 5 and the oil pipe 4 in the axial direction, and the third positioning part is clamped with the outer wall of the oil pipe 4 in the axial direction of the oil pipe locking member 5. The third positioning part is used for fixing the oil pipe in the vertical direction, so that the oil pipe 4 can meet the lifting requirement.
Specifically, the third location portion includes a plurality of third location bosss (not shown) that set up along oil pipe retaining member 5's circumference, and each third location boss is connected along oil pipe retaining member 5's length direction and is arranged, and the cross section of each third location boss forms cockscomb structure, the outer fringe chucking oil pipe 4's of each third location boss outer wall.
The sucker rod fishing and back-off device along with the pipe has the characteristics and advantages that:
one, this sucker rod is salvaged back-off device along with the pipe cooperatees through oil pipe retaining member 5 and sucker rod locking back-off member 6 and connects between oil pipe 4 and the sucker rod 3 that has broken out, can enough lift the operation to oil pipe 4 and sucker rod 3, can also carry out the back-off operation to sucker rod 3, moreover, the steam generator is simple in structure, the operation is convenient, can accomplish the unfreezing and the play-out operation to the tubular column through the workover rig, need not staff's manual sawing sucker rod 3, greatly reduced staff's intensity of labour, effectively improve workover operating efficiency.
Two, this sucker rod is salvaged back-off unit along with the pipe has seted up holding chamber 501 on the inner wall of oil pipe retaining member 5, can upwards transmit the lifting power through spacing boss 601 on sucker rod locking back-off member 6 and holding chamber 501's inner wall butt, under the condition that promotes oil pipe 4, can drive sucker rod locking back-off member 6 up-wards motion, thereby the operation of unfreezing is carried out to the sucker rod 3 that blocks, under the too big condition that still can't unfreeze at the load, holding chamber 501 can provide certain buffering and the space of activity for sucker rod locking back-off member 6 and sucker rod 3, avoid causing sucker rod 3 to break off.
Thirdly, this sucker rod is salvaged back-off unit along with pipe on oil pipe locking piece 5 and sucker rod locking back-off piece 6 lie in the same axis on vertical direction to make oil pipe 4 and sucker rod 3 lie in the same axis on vertical direction, at the in-process of carrying, the lifting force can be followed vertical direction transmission, improves the stability of the whole work of device.
Example two
As shown in fig. 4, the invention provides a method for fishing and reversing a sucker rod along with a pipe, which is carried out after the sucker rod 3 is blocked and an oil pipe 4 is lifted out of the sucker rod 3 above a well head 1, and specifically comprises the following steps:
step S1: the sucker rod salvaging and back-off device along with the pipe is arranged between the oil pipe 4 which is broken off and the sucker rod 3 which is exposed above the well mouth 1;
step S2: lifting the oil pipe 4 for releasing the blockage;
step S3: if the releasing of the clamp is successful, the oil pipe 4 can be continuously lifted, after the coupling of the sucker rod 3 is exposed above the wellhead 1, the elevator 2 is fixedly sleeved on the outer side of the sucker rod 3, the sucker rod 3 is fixed and then is broken off, the oil pipe 4 is moved to a pipe bridge, all the sucker rods 3 are continuously lifted out, and the operation is finished;
step S4: if the releasing of the clamp fails, the sucker rod is rotated to carry out back-off on the sucker rod 3 along with the pipe salvaging back-off device, the oil pipe 4 is continuously lifted after the back-off, after a coupling of the sucker rod 3 is exposed above the wellhead 1, the elevator 2 is fixedly sleeved on the outer side of the sucker rod 3, the sucker rod 3 is fixed and then is broken off, the oil pipe 4 is moved to a pipe bridge, and the sucker rod 3 is continuously lifted out;
step S5: in step S4, if all the sucker rods 3 are pulled out, the operation is ended; and if all the sucker rods 3 are not pulled out, pulling out one section of the oil pipe 4 until the next section of the sucker rods 3 is exposed above the wellhead 1, repeating the operations from the step S1 to the step S4 until all the oil pipes 4 and the sucker rods 3 are pulled out, and finishing the operation.
Further, as shown in fig. 4, before step S1, first, it is necessary to perform a preliminary trip operation on the jammed pumping rod 3 by using the working machine, if the trip operation is successful, all the pumping rods and oil pipes are continuously pulled out, and the operation is ended; if the unfreezing fails, the conventional back-off operation is carried out on the well head 1 by adopting the operating machine, the back-off point (namely, the position of a coupling) of the sucker rod 3 cannot be determined after the back-off operation, the sucker rod 3 and the oil pipe 4 need to be continuously lifted out until the oil pipe 4 which is already buckled is lifted above the well head 1, the top end of the sucker rod 3 is positioned above the well head 1, and the top end of the sucker rod 3 extends into the oil pipe 4, so that the sucker rod fishing and back-off device along with the pipe can be conveniently installed.
Further, in step S2, the third positioning bosses on the inner wall of the oil pipe locking member 5 are connected to the outer wall of the oil pipe 4, the first positioning bosses 6021 and the second positioning bosses 6031 on the inner wall of the sucker rod locking back-off member 6 are connected to the outer wall of the sucker rod 3, respectively, and the top of the sucker rod locking back-off member 6 is connected to the bottom of the oil pipe locking member 5, so as to complete the connection of the sucker rod fishing back-off device with the sucker rod 3 and the oil pipe 4.
The method for fishing and back-off the sucker rod along with the pipe has the characteristics and advantages that:
this sucker rod salvages back-off method along with the pipe through the sucker rod salvages back-off device along with the pipe and connects oil pipe 4 and sucker rod 3 that have broken out, can carry out the preliminary unfreezing operation of sucker rod 3 through lifting oil pipe 4, under the circumstances of the unfreezing failure, salvage the back-off operation that the back-off device can accomplish sucker rod 3 along with the pipe through rotating the sucker rod, lift oil pipe 4 until exposing the coupling on sucker rod 3 and can accomplish the work of pulling out of whole tubular columns, moreover, the steam generator is simple in structure, and the operation is convenient, need not staff's manual sawing sucker rod 3, greatly reduced labor intensity, effectively improved well workover operating efficiency.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (13)
1. The utility model provides a sucker rod is salvaged back-off unit along with pipe, its set up in oil pipe (4) that have broken out and stretch into with the top extremely between sucker rod (3) in oil pipe (4), its characterized in that, the sucker rod is salvaged back-off unit along with pipe include with oil pipe retaining member (5) that oil pipe (4) are connected and with sucker rod locking back-off piece (6) that sucker rod (3) are connected, wherein:
oil pipe retaining member (5) with sucker rod locking back-off member (6) are the tubular structure that sets up along vertical direction, oil pipe retaining member (5) fixed cover is located the bottom outside of oil pipe (4), sucker rod locking back-off member (6) fixed cover is located the outside of sucker rod (3), the top of sucker rod locking back-off member (6) with the bottom of oil pipe retaining member (5) is connected.
2. The sucker rod fishing-with-pipe reversing device according to claim 1, wherein an accommodating chamber (501) communicated with the inside of the oil pipe locking member (5) is formed in the inner wall of the oil pipe locking member (5), a limiting boss (601) is arranged on the outer wall of the top of the sucker rod locking reversing member (6), the top of the sucker rod locking reversing member (6) extends into the accommodating chamber (501), and the bottom of the limiting boss (601) is abutted to the inner wall of the bottom of the accommodating chamber (501).
3. The sucker rod fishing-with-pipe reversing device according to claim 2, wherein the limiting boss (601) is an annular structure arranged along the circumferential direction of the sucker rod locking reversing device (6).
4. The sucker rod fishing-with-pipe reversing device according to claim 2, wherein the bottom end of the oil pipe (4) extends into the accommodating chamber (501), the top end of the sucker rod (3) sequentially passes through the sucker rod locking reversing element (6) and the accommodating chamber (501) and extends into the oil pipe (4), and the oil pipe locking element (5) and the sucker rod locking reversing element (6) are vertically positioned on the same axis, so that the oil pipe (4) and the sucker rod (3) are vertically positioned on the same axis.
5. The sucker rod fishing-with-pipe reversing device according to claim 1, wherein a first positioning portion (602) for axially fixing the sucker rod locking reversing device (6) and the sucker rod (3) and a second positioning portion (603) for circumferentially fixing the sucker rod locking reversing device (6) and the sucker rod (3) are provided on an inner wall of the sucker rod locking reversing device (6); first location portion (602) be in the axial of sucker rod locking back-off member (6) upwards with the outer wall joint of sucker rod (3), second location portion (603) be in the circumferencial direction of sucker rod locking back-off member (6) with the outer wall joint of sucker rod (3).
6. The sucker rod fishing-with-pipe reversing device according to claim 5, wherein the first positioning portion (602) comprises a plurality of first positioning bosses (6021) arranged along the circumferential direction of the sucker rod locking reversing element (6), each first positioning boss (6021) is connected and arranged along the length direction of the sucker rod locking reversing element (6), and the cross section of each first positioning boss (6021) forms a saw-toothed structure.
7. The sucker rod pipe-following fishing reversing device according to claim 5, wherein the second positioning part (603) comprises a plurality of second positioning bosses (6031) arranged along the length direction of the sucker rod locking reversing piece (6), each second positioning boss (6031) is connected and arranged along the circumferential direction of the sucker rod locking reversing piece (6), and the cross section of each second positioning boss (6031) forms a saw-toothed structure.
8. The sucker rod fishing-with-pipe reversing device according to claim 5, wherein the first positioning portion (602) is located at an upper portion of an inner wall of the sucker rod locking reversing device (6), and the second positioning portion (603) is located at a lower portion of the inner wall of the sucker rod locking reversing device (6).
9. The sucker rod fishing and reversing device along with the pipe according to claim 1, wherein a third positioning part for axially fixing the oil pipe locking piece (5) and the oil pipe (4) is arranged on the inner wall of the oil pipe locking piece (5); the third positioning part is arranged on the axial direction of the oil pipe locking part (5) and is clamped with the outer wall of the oil pipe (4).
10. The sucker rod fishing and reversing device along with the pipe according to claim 9, wherein the third positioning portion comprises a plurality of third positioning bosses arranged along the circumferential direction of the oil pipe locking member (5), each third positioning boss is connected and arranged along the length direction of the oil pipe locking member (5), and the cross section of each third positioning boss forms a saw-toothed structure.
11. The utility model provides a sucker rod salvages back-off method along with managing which characterized in that, sucker rod salvages back-off method along with managing includes following step:
step S1: the sucker rod salvaging and back-off device along with the pipe is arranged between the oil pipe (4) which is broken off and the sucker rod (3) which is exposed above the well head (1);
step S2: lifting the oil pipe (4) for releasing the blockage;
step S3: if the releasing of the clamp is successful, the oil pipe (4) can be continuously lifted, after a coupling of the sucker rod (3) is exposed above the wellhead (1), an elevator (2) is fixedly sleeved on the outer side of the sucker rod (3), the sucker rod (3) is fixed and then is broken off, the oil pipe (4) is moved to a pipe bridge, all the sucker rods (3) are continuously lifted out, and the operation is finished;
step S4: if the unlocking fails, the sucker rod and pipe fishing reversing device is rotated to reverse the sucker rod (3), the oil pipe (4) is continuously lifted after reversing, the elevator (2) is fixedly sleeved on the outer side of the sucker rod (3) after a coupling of the sucker rod (3) is exposed above the well head (1), the sucker rod (3) is fixed and then is disconnected, the oil pipe (4) is moved to a pipe bridge, and the sucker rod (3) is continuously lifted out;
step S5: in the step S4, if all the sucker rods (3) are pulled out, the operation is ended; and if all the sucker rods (3) are not pulled out, pulling out a section of oil pipe (4) until the next section of sucker rod (3) is exposed above the wellhead (1), repeating the operations from the step S1 to the step S4 until all the oil pipes (4) and the sucker rods (3) are pulled out, and finishing the operation.
12. The sucker rod pipe-in-pipe fishing reversing method according to claim 11, characterized in that before the step S1, the broken-out oil pipe (4) is lifted above the wellhead (1), the top end of the sucker rod (3) is located above the wellhead (1), and the top end of the sucker rod (3) extends into the oil pipe (4).
13. The method for fishing and reversing the sucker rod along with the pipe according to claim 12, wherein in the step S2, the third positioning bosses on the inner wall of the oil pipe locking piece (5) are clamped with the outer wall of the oil pipe (4), the first positioning bosses (6021) and the second positioning bosses (6031) on the inner wall of the sucker rod locking reversing piece (6) are respectively clamped with the outer wall of the sucker rod (3), and the top of the sucker rod locking reversing piece (6) is connected with the bottom of the oil pipe locking piece (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010095485.2A CN113266295B (en) | 2020-02-17 | 2020-02-17 | Device and method for fishing and reversing sucker rod along with pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010095485.2A CN113266295B (en) | 2020-02-17 | 2020-02-17 | Device and method for fishing and reversing sucker rod along with pipe |
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| CN113266295A true CN113266295A (en) | 2021-08-17 |
| CN113266295B CN113266295B (en) | 2023-04-25 |
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| US5388647A (en) * | 1993-02-12 | 1995-02-14 | Mcglothlin; Charles E. | Sucker rod back off tool |
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| CN204113149U (en) * | 2014-08-13 | 2015-01-21 | 中国石油天然气股份有限公司 | Fluting pipe nipple unloader of beam-pumping rod |
| CN204691705U (en) * | 2015-06-26 | 2015-10-07 | 中国石油天然气股份有限公司 | Back-off device of sucker rod |
| CN206053890U (en) * | 2016-09-29 | 2017-03-29 | 胡胜杰 | Inversive fastening pumping rods dipper in sleeve pipe |
| CN108060902A (en) * | 2016-11-09 | 2018-05-22 | 中国石油天然气股份有限公司 | unfreezing fishing method |
| US20190284884A1 (en) * | 2016-10-14 | 2019-09-19 | Kaus Borealis Pty Ltd | Rod or tube lifting apparatus |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388647A (en) * | 1993-02-12 | 1995-02-14 | Mcglothlin; Charles E. | Sucker rod back off tool |
| CN201013273Y (en) * | 2007-03-30 | 2008-01-30 | 辽河石油勘探局 | Anti-backoff pumping rod co-start device |
| CN204113149U (en) * | 2014-08-13 | 2015-01-21 | 中国石油天然气股份有限公司 | Fluting pipe nipple unloader of beam-pumping rod |
| CN204691705U (en) * | 2015-06-26 | 2015-10-07 | 中国石油天然气股份有限公司 | Back-off device of sucker rod |
| CN206053890U (en) * | 2016-09-29 | 2017-03-29 | 胡胜杰 | Inversive fastening pumping rods dipper in sleeve pipe |
| US20190284884A1 (en) * | 2016-10-14 | 2019-09-19 | Kaus Borealis Pty Ltd | Rod or tube lifting apparatus |
| CN108060902A (en) * | 2016-11-09 | 2018-05-22 | 中国石油天然气股份有限公司 | unfreezing fishing method |
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|---|---|
| CN113266295B (en) | 2023-04-25 |
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