CN105443057A - Torque-withstanding type double-acting releasing tool - Google Patents
Torque-withstanding type double-acting releasing tool Download PDFInfo
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- CN105443057A CN105443057A CN201510896790.0A CN201510896790A CN105443057A CN 105443057 A CN105443057 A CN 105443057A CN 201510896790 A CN201510896790 A CN 201510896790A CN 105443057 A CN105443057 A CN 105443057A
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- sliding sleeve
- lower contact
- top connection
- releasing tool
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- 238000007789 sealing Methods 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000003780 insertion Methods 0.000 claims description 20
- 230000037431 insertion Effects 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 abstract 3
- 239000012530 fluid Substances 0.000 description 9
- 239000003129 oil well Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention provides a torque-withstanding type double-acting releasing tool. The torque-withstanding type double-acting releasing tool comprises an upper connector, a lower connector and a sliding sleeve, wherein a suspended step is arranged on the inner wall of the upper connector, the lower connector is sealed and arranged at the lower portion of the upper connector in a sleeving mode, the lower connector and the upper connector are fixed through first shear screws in a penetrating mode, the sliding sleeve is sealed and arranged in the upper connector and the lower connector in a penetrating mode, a step is arranged on the outer wall of the sliding sleeve in a protruding mode and is located above the suspended step, a sealing conical surface for clamping a steel ball is arranged on the inner wall of the sliding sleeve, the sliding sleeve is provided with overflow holes formed in the upper portion of the sealing conical surface, and the sliding sleeve and the lower connector are fixed through second shear screws in a penetrating mode. The torque-withstanding type double-acting releasing tool has mechanical and hydraulic releasing modes simultaneously and is simple in structure, high in reliability and good in internal pressure bearing capacity.
Description
Technical field
The present invention relates to oil well technical field, particularly a kind of releasing tool, specifically a kind of bearing torque formula Double-acting releasing tool being applicable to oil well pressure break, oil recovery, workover treatment.
Background technology
In oil well pressure break, oil recovery, well workover, completion practice process, all kinds of releasing tool is often used to, and existing releasing tool, by model split of giving up, is mainly divided into mechanical type and fluid pressure type two kinds.
The main feature of existing mechanical type releasing tool is the mode adopting rotation or upper lifting pipe post, the shear pin on releasing tool between lower contact is cut off, to complete action of giving up; Wherein employing rotation tubing string cuts off the instrument that shear pin is given up, and it bears power, holds internal pressure capability comparatively greatly, but can not hold torque load, and complex structure, interior latus rectum is less; And the instrument adopting upper lifting pipe post to cut off shear pin to give up, its structure is simpler, it is larger that interior latus rectum can do, but weak point is, the internal pressure capability that holds of tubing string is directly determined by shear pin shear strength, when causing work, tubing string can not bear pressure in more than 50MPa, when in tubing string in operation process during pressure oscillation, easily causes misoperation of giving up.
The main feature of existing hydraulic releasing tool is, adopts pitching in tubing string, sets sliding sleeve, then build the pressure in tubing string, sliding sleeve opens switch of giving up, and makes instrument complete action of giving up, the interior pressure of height of 70MPa can be born, and its weak point is complex structure, cost is high, and assembling difficulty is large, and instrument entirety to bear power be not very large, in work progress to pressure, under enter instrument speeds control require height, easily cause and give up in advance, reliability of giving up is not high.
And the mode of giving up of existing mechanical type or fluid pressure type is all adopt single method of giving up, once give up unsuccessfully, then can only change releasing tool running string again, complex operation, reliability is low.
Because above-mentioned prior art Problems existing, the present inventor, in conjunction with the design for many years of relevant manufacture field and use experience, was aided with strong professional knowledge, was optimized design to existing structure, a kind of bearing torque formula Double-acting releasing tool is provided, overcomes above-mentioned defect.
Summary of the invention
The object of this invention is to provide a kind of bearing torque formula Double-acting releasing tool, it has mechanical type and fluid pressure type two kinds of modes of giving up simultaneously, and structure is simple, and reliability is high, bears internal pressure capability strong.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of bearing torque formula Double-acting releasing tool, it comprises: top connection, and its inwall is provided with suspension step; Lower contact, the bottom of described top connection is located at by its sealing shroud, wears fixing between described lower contact and described top connection by the first shear screw; Sliding sleeve, its sealing is arranged in described top connection and in described lower contact, the outer wall of described sliding sleeve is convexly equipped with step, described step is positioned at the top of described suspension step, the inwall of described sliding sleeve is provided with the sealing cone that steel ball established by card, described sliding sleeve is provided with flowing hole in the top of described sealing cone, wears fixing between described sliding sleeve and described lower contact by the second shear screw.
In a preferred embodiment, the bottom outer wall of described top connection is along the circumferential direction provided with multiple upper teeth groove, the external wall of upper portion of described lower contact is along the circumferential direction provided with multiple lower teeth groove, insertion section is formed with between two between described upper teeth groove, lower insertion section is formed with between two between described lower teeth groove, described upper insertion section is positioned at described lower teeth groove, and described lower insertion section is positioned at described upper teeth groove.
In a preferred embodiment, the inwall of described lower contact is provided with pressure-bearing step, pressure-bearing chamber is formed between the lower surface of described top connection and described pressure-bearing step, under the state that described second shear screw is cut off and the relatively described lower contact of described sliding sleeve moves down, described flowing hole is connected with described pressure-bearing chamber.
In a preferred embodiment, the inwall of described lower contact is provided with limited step, described limited step is positioned at the below of described sliding sleeve, under the state that described second shear screw is cut off and the relatively described lower contact of described sliding sleeve moves down, the lower surface contact of described sliding sleeve is on described limited step.
In a preferred embodiment, the distance between described limited step and described sliding sleeve lower surface is less than or equal to the distance between the step of described sliding sleeve and described suspension step.
In a preferred embodiment, the outer wall of described top connection is arranged with sealed groove, is provided with sealing ring in described sealed groove.
In a preferred embodiment, the outer wall of described sliding sleeve is arranged with multiple sealed groove, is respectively equipped with sealing ring in multiple described sealed groove.
In a preferred embodiment, the sealed groove of described sliding sleeve is four, and the sealed groove of two described sliding sleeves reclines mutually with the inwall of described top connection, and the sealed groove of two described sliding sleeves reclines mutually with the inwall of described lower contact.
In a preferred embodiment, the upper end of described top connection is provided with box thread, and the lower end of described lower contact is provided with male thread.
Feature and the advantage of bearing torque formula Double-acting releasing tool of the present invention are:
1, the present invention has two kinds of modes of giving up, and the mechanical type that upper lifting pipe post can be adopted to break shear screw is given up mode, and the fluid pressure type of pitching in tubing string also can be adopted to give up mode, realizes oil well and to give up stable uncoupling, the reliability of giving up is improved greatly;
2, the present invention is provided with sliding sleeve in top connection and lower contact, first shear screw is set between top connection and lower contact simultaneously, and the second shear screw is set between lower contact and sliding sleeve, sliding sleeve is made to have every compression functions, can bear in the height higher compared with prior art and press, preferably, the present invention can bear the high interior pressure of 70 MPas (MPa), the underground work requirement of pressure in high workload can be met, and, can need to adjust separately pulling force size when above lifting disconnected giving up according to operation, to meet different operating mode job requirements, applied widely;
3, each teeth groove of the present invention by top connection, lower contact and the bearing torque formula vibrational power flow be mutually embedded of each insertion section, large load torque can be born, preferably, it can bear the torque load of 5800 Ns of rice (Nm), can adapt to the job requirements of more hole conditions.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of bearing torque formula Double-acting releasing tool of the present invention;
Fig. 2 is the schematic cross-section of the A-A in Fig. 1 to cutting line;
Fig. 3 is structural representation when bearing torque formula Double-acting releasing tool of the present invention being carried uncoupling;
Structural representation when Fig. 4 is bearing torque formula Double-acting releasing tool pitching uncoupling of the present invention.
Drawing reference numeral illustrates:
1 top connection, the upper teeth groove of 1-1, insertion section on 1-1 ＇, 1-2 first cut groove, 1-3 sealed groove, 1-4 hangs step, 2 lower contacts, teeth groove under 2-1, insertion section under 2-1 ＇, 2-2 fishing neck, 2-3 first screw hole, 2-4 second screw hole, 2-5 limited step, 3 first shear screw, 4 sealing rings, 5 sealing rings, 6 sliding sleeves, 6-1 step, 6-2 flowing hole, 6-3 sealing cone, 6-4 sealed groove, 6-5 second cut groove, 7 second shear screw, 8 steel balls, 9 pressure-bearing steps, 10 pressure-bearing chambers, H1 distance, H2 distance.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the invention provides a kind of bearing torque formula Double-acting releasing tool, it comprises: top connection 1, and its inwall is provided with and hangs step 1-4; Lower contact 2, the bottom of described top connection 1 is located at by its sealing shroud, wears fixing between described lower contact 2 and described top connection 1 by the first shear screw 3; Sliding sleeve 6, its sealing is arranged in described top connection 1 and in described lower contact 2, the outer wall of described sliding sleeve 6 is convexly equipped with step 6-1, described step 6-1 is positioned at the top of described suspension step 1-4, the inwall of described sliding sleeve 6 is provided with the sealing cone 6-3 that steel ball 8 established by card, described sliding sleeve 6 is provided with flowing hole 6-2 in the top of described sealing cone 6-3, wears fixing between described sliding sleeve 6 and described lower contact 2 by the second shear screw 7.
Concrete, top connection 1 inside is provided with through hole, the bottom outer wall radial direction of top connection 1 is arranged with the first cut groove 1-2, the inside of lower contact 2 is also provided with through hole, and be connected with the through hole of top connection 1, the top radial direction of lower contact 2 is provided with the first screw hole 2-3, the bottom radial direction of lower contact 2 is provided with the second screw hole 2-4, the first screw hole 2-3 on the top of lower contact 2 is corresponding with the first cut groove 1-2 of top connection 1 and wear fixing by the first shear screw 3, to bear the pulling force between top connection 1 and lower contact 2, sliding sleeve 6 is cylindrical, sliding sleeve 6 is arranged in the through hole of top connection 1 and the through hole of lower contact 2, make the present invention can bear the interior pressure of height of 70 MPas (MPa), sliding sleeve 6 inwall arrange sealing cone 6-3 from top connection 1 side to lower contact 2 side convergent, to accept the steel ball 8 fallen, the outer wall radial direction of sliding sleeve 6 is arranged with the second cut groove 6-5, second cut groove 6-5 of sliding sleeve 6 is corresponding with the second screw hole 2-4 of the bottom of lower contact 2 and wear fixing by the second shear screw 7, to bear the pulling force between lower contact 2 and sliding sleeve 6,
In one embodiment, first cut groove 1-2 of top connection 1 and the second cut groove 6-5 of sliding sleeve 6 can be respectively along the circumferencial direction of top connection 1 and the spaced multiple groove of the circumferencial direction of sliding sleeve 6, first screw hole 2-3 of lower contact 2 and the second screw hole 2-4 is also respectively along the circumferencial direction of top connection 1 and the spaced multiple through hole of the circumferencial direction of sliding sleeve 6, its quantity is identical with the quantity of the second cut groove 6-5 with the first cut groove 1-2 respectively, multiple first screw hole 2-3 and the first cut groove 1-2 corresponding with it is arranged in respectively by multiple first shear screw 3, to bear the shearing strength between top connection 1 and lower contact 2, and the adjustment of pulling force size needed for uncoupling between top connection 1 and lower contact 2 is realized by the quantity of adjustment first shear screw 3, simultaneously, multiple second screw hole 2-4 and the second cut groove 6-5 corresponding with it is arranged in respectively by multiple second shear screw 7, to bear the shearing strength between lower contact 2 and sliding sleeve 6, and the adjustment of pulling force size needed for uncoupling between lower contact 2 and sliding sleeve 6 is realized by the quantity of adjustment second shear screw 7, certainly, also first shear screw 3 and second shear screw 7 with different anti-shearing force can be selected according to job requirements,
In another embodiment, first cut groove 1-2 of top connection 1 and the second cut groove 6-5 of sliding sleeve 6 can be respectively the annular groove along the circumferential direction arranged, first screw hole 2-3 of lower contact 2 and the second screw hole 2-4 is respectively along the circumferential direction spaced multiple through hole, preferably, as shown in Figure 1, first screw hole 2-3 is two and radial symmetric is arranged, second screw hole 2-4 is also two and radial symmetric is arranged, make the first screw hole 2-3 and the first cut groove 1-2, second screw hole 2-4 is convenient with aiming at of the second cut groove 6-5, top connection 1, installation between lower contact 2 and sliding sleeve 6 is easier.
Further, as shown in Figure 2, the bottom outer wall of described top connection 1 is along the circumferential direction provided with multiple upper teeth groove 1-1, the external wall of upper portion of described lower contact 2 is along the circumferential direction provided with multiple lower teeth groove 2-1, insertion section 1-1 ＇ is formed with between two between described upper teeth groove 1-1, lower insertion section 2-1 ＇ is formed with between two between described lower teeth groove 2-1, described upper insertion section 1-1 ＇ is positioned at described lower teeth groove 2-1, described lower insertion section 2-1 ＇ is positioned at described upper teeth groove 1-1, make bearing torque formula Double-acting releasing tool of the present invention can bear moment of torsion between top connection 1 and lower contact 2, be specially adapted to the occasion needing large load operation moment of torsion, preferably, the present invention can bear the torque load of 5800 Ns of rice (Nm).
Further, the inwall of described lower contact 2 is provided with pressure-bearing step 9, pressure-bearing chamber 10 is formed between the lower surface of described top connection 1 and described pressure-bearing step 9, under the state that described second shear screw 7 is cut off and the relatively described lower contact 2 of described sliding sleeve 6 moves down, described flowing hole 6-2 is connected with described pressure-bearing chamber 10, the fluid pressure in working string is made to be delivered in pressure-bearing chamber 10 by flowing hole 6-2, larger hydraulic coupling is produced between top connection 1 and lower contact 2, and transmit and be applied to the first shear screw 3 and make it cut off, and realize uncoupling between top connection 1 and lower contact 2.
Further, the inwall of described lower contact 2 is provided with limited step 2-5, described limited step 2-5 is positioned at the below of described sliding sleeve 6, under the state that described second shear screw 7 is cut off and the relatively described lower contact 2 of described sliding sleeve 6 moves down, the lower surface contact of described sliding sleeve 6 is on described limited step 2-5, under action of hydraulic force, distance is moved down to limit sliding sleeve 6, further, the distance H2 between described limited step 2-5 and described sliding sleeve 6 lower surface is less than or equal to the distance H1 between the step 6-1 of described sliding sleeve 6 and described suspension step 1-4.
Further, the outer wall of described top connection 1 is arranged with sealed groove 1-3, is provided with sealing ring 5 in described sealed groove 1-3, to realize the sealing of top connection 1 and lower contact 2 contact position, wherein, the quantity of sealed groove 1-3 and sealing ring 5 can correspondence be set to multiple respectively.The outer wall of described sliding sleeve 6 is arranged with multiple sealed groove 6-4, sealing ring 4 is respectively equipped with in multiple described sealed groove 6-4, to realize the sealing of sliding sleeve 6 and top connection 1 and lower contact 2, preferably, the sealed groove 6-4 of described sliding sleeve 6 is four, and the sealed groove 6-4 of two described sliding sleeves 6 reclines mutually with the inwall of described top connection 1, and the sealed groove 6-4 of two described sliding sleeves 6 reclines mutually with the inwall of described lower contact 2, a sealing ring 4 is provided with, to realize consistent seal in each sealed groove 6-4.
Bearing torque formula Double-acting releasing tool of the present invention when mounted, first in each sealed groove, sealing ring is installed, then sliding sleeve 6 is inserted in the through hole of lower contact 2, again the bottom of top connection 1 is inserted in the through hole of lower contact 2, and make insertion section 1-1 ＇ insert in lower teeth groove 2-1, in the 2-1 ＇ insertion of lower insertion section in teeth groove 1-1, then in the first screw hole 2-3 and the first cut groove 1-2, insert the first shear screw 3 fix, and it is fixing to insert the second shear screw 7 in the second screw hole 2-4 and the second cut groove 6-5, simultaneously, the upper end of described top connection 1 is provided with box thread, can be connected with the working string above releasing tool, the lower end of described lower contact 2 is provided with male thread, can be connected with the power tool string below releasing tool, so namely complete installation.
Bearing torque formula Double-acting releasing tool of the present invention is mainly used in the operations such as auxiliary oil well pressure break, oil recovery, well workover, completion, it operationally, be connected as aid and various downhole tool and together with transfer to shaft bottom, when underground mining tool operation need transmit comparatively high pulling torque time, as shown in Figure 2, can tubing string be rotated, by the structure of top connection 1 and the teeth groove of lower contact 2 and the mutual embedding of insertion section, realize the transmission of moment of torsion; When downhole tool needs uncoupling, by ground installation upper lifting pipe post, break each shear screw of the present invention, thus make bearing torque formula Double-acting releasing tool uncoupling, or, carry out pitching by ground installation in tubing string, then press in beating in tubing string, thus make its uncoupling, be described as follows:
When downhole tool needs to give up, mechanical type can be adopted to give up mode, as shown in Figure 3, by ground installation being carried the tubing string in operation pit shaft, upper lift power is delivered in top connection 1 of the present invention by shaft column, when the pulling force of upper lifting pipe post is greater than the Shear power of the first shear screw 3, first shear screw 3 can be cut off, after first shear screw 3 is cut off, under gravity, lower contact 2 moves down with sliding sleeve 6, top connection 1 moves on continuing between lower contact 2 and sliding sleeve 6 under a stretching force, until the step 6-1 of sliding sleeve 6 is suspended on the suspension step 1-4 of top connection 1, then the pulling force of upper lifting pipe post is by top connection 1, sliding sleeve 6 and act on the second shear screw 7, when pulling force is greater than the Shear power of the second shear screw 7, second shear screw 7 is also cut off, top connection 1 uncoupling last with lower contact 2, complete action of giving up, then move top connection 1 by upper lifting pipe cornice to move up together with sliding sleeve 6, it is proposed oil well together, wherein, the Shear power of the first shear screw 3 can equal the Shear power of the second shear screw 7, the Shear power of certain first shear screw 3 also can be not equal to the Shear power of the second shear screw 7, simultaneously according to operation needs, the Shear power that can adjust the first shear screw 3 and the second shear screw 7 becomes large or diminishes, and realizes giving up to meet the disconnected shear screw of lift on different work operating mode lower tubular column,
When adopting the fluid pressure type mode of giving up to realize giving up, as shown in Figure 4, pass through ground installation, steel ball 8 is dropped in tubing string, steel ball 8 finally enters sliding sleeve 6 and sets on the sealing cone 6-3 of sliding sleeve 6, then, by the pump pressure equipment on ground, pressure in beating in working string, when interior pressure reaches certain value, the hydraulic coupling be applied on steel ball 8 and sliding sleeve 6 can be greater than the Shear power of the second shear screw 7, second shear screw 7 can be cut off, after second shear screw 7 is cut off, sliding sleeve 6 continues in top connection 1 and lower contact 2 and moves down under action of hydraulic force, until the lower end of sliding sleeve 6 is conflicted on the limited step 2-5 of lower contact 2, now, flowing hole 6-2 on sliding sleeve 6 moves down into pressure-bearing chamber 10 place between top connection 1 and lower contact 2 just, and be communicated with pressure-bearing chamber 10, fluid pressure in working string is delivered to pressure-bearing chamber 10 by flowing hole 6-2, and larger hydraulic coupling is produced between top connection 1 and lower contact 2, when this hydraulic coupling is greater than the Shear power of the first shear screw 3, first shear screw 3 is cut off, lower contact 2 moves down together with sliding sleeve 6, until the step 6-1 of sliding sleeve 6 is suspended to the suspension step 1-4 place of top connection 1, sliding sleeve 6 stops falling, lower contact 2 continues to fall, top connection 1 and lower contact 2 uncoupling, realization is given up action, when downhole tool fulfils assignment, when needing downhole tool to salvage oil well, can in tubing string under enter fishing tool, and be located at the fishing neck 2-2 of lower contact 2 by fishing tool hook, can salvaging be completed, easy to operate,
Certainly, in real work, the mechanical type that upper lifting pipe post also can be adopted to break shear screw combines with to the fluid pressure type of pitching in tubing string, common realization is given up operation, such as, breaks the first shear screw 3 by upper lifting pipe post, and by dropping into steel ball 8 in tubing string, pressure in simultaneously injecting, realizes cutting off of the second shear screw 7, realizes thus giving up.
Feature and the advantage of bearing torque formula Double-acting releasing tool of the present invention are:
1, the present invention has two kinds of modes of giving up, and the mechanical type that upper lifting pipe post can be adopted to break shear screw is given up mode, and the fluid pressure type of pitching in tubing string also can be adopted to give up mode, realizes oil well and to give up stable uncoupling, the reliability of giving up is improved greatly;
2, the present invention is provided with sliding sleeve 6 in top connection 1 and lower contact 2, first shear screw 3 is set between top connection 1 and lower contact 2 simultaneously, and the second shear screw 7 is set between lower contact 2 and sliding sleeve 6, sliding sleeve 6 is made to have every compression functions, can bear in the height higher compared with prior art and press, preferably, the present invention can bear the high interior pressure of 70 MPas (MPa), the underground work requirement of pressure in high workload can be met, and, can need to adjust separately pulling force size when above lifting disconnected giving up according to operation, to meet different operating mode job requirements, applied widely;
3, each teeth groove of the present invention by top connection 1, lower contact 2 and the bearing torque formula vibrational power flow be mutually embedded of each insertion section, large load torque can be born, preferably, it can bear the torque load of 5800 Ns of rice (Nm), can adapt to the job requirements of more hole conditions.
The above is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, have in any art and usually know the knowledgeable, not departing from the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (9)
1. a bearing torque formula Double-acting releasing tool, is characterized in that, described bearing torque formula Double-acting releasing tool comprises:
Top connection, its inwall is provided with suspension step;
Lower contact, the bottom of described top connection is located at by its sealing shroud, wears fixing between described lower contact and described top connection by the first shear screw;
Sliding sleeve, its sealing is arranged in described top connection and in described lower contact, the outer wall of described sliding sleeve is convexly equipped with step, described step is positioned at the top of described suspension step, the inwall of described sliding sleeve is provided with the sealing cone that steel ball established by card, described sliding sleeve is provided with flowing hole in the top of described sealing cone, wears fixing between described sliding sleeve and described lower contact by the second shear screw.
2. bearing torque formula Double-acting releasing tool according to claim 1, it is characterized in that, the bottom outer wall of described top connection is along the circumferential direction provided with multiple upper teeth groove, the external wall of upper portion of described lower contact is along the circumferential direction provided with multiple lower teeth groove, insertion section is formed with between two between described upper teeth groove, be formed with lower insertion section between described lower teeth groove between two, described upper insertion section is positioned at described lower teeth groove, and described lower insertion section is positioned at described upper teeth groove.
3. bearing torque formula Double-acting releasing tool according to claim 1, it is characterized in that, the inwall of described lower contact is provided with pressure-bearing step, pressure-bearing chamber is formed between the lower surface of described top connection and described pressure-bearing step, under the state that described second shear screw is cut off and the relatively described lower contact of described sliding sleeve moves down, described flowing hole is connected with described pressure-bearing chamber.
4. bearing torque formula Double-acting releasing tool according to claim 1, it is characterized in that, the inwall of described lower contact is provided with limited step, described limited step is positioned at the below of described sliding sleeve, under the state that described second shear screw is cut off and the relatively described lower contact of described sliding sleeve moves down, the lower surface contact of described sliding sleeve is on described limited step.
5. bearing torque formula Double-acting releasing tool according to claim 4, is characterized in that, the distance between described limited step and described sliding sleeve lower surface is less than or equal to the distance between the step of described sliding sleeve and described suspension step.
6. bearing torque formula Double-acting releasing tool according to claim 1, it is characterized in that, the outer wall of described top connection is arranged with sealed groove, is provided with sealing ring in described sealed groove.
7. bearing torque formula Double-acting releasing tool according to claim 1, is characterized in that, the outer wall of described sliding sleeve is arranged with multiple sealed groove, is respectively equipped with sealing ring in multiple described sealed groove.
8. bearing torque formula Double-acting releasing tool according to claim 7, it is characterized in that, the sealed groove of described sliding sleeve is four, and the sealed groove of two described sliding sleeves reclines mutually with the inwall of described top connection, and the sealed groove of two described sliding sleeves reclines mutually with the inwall of described lower contact.
9. bearing torque formula Double-acting releasing tool according to claim 1, it is characterized in that, the upper end of described top connection is provided with box thread, and the lower end of described lower contact is provided with male thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510896790.0A CN105443057B (en) | 2015-12-08 | 2015-12-08 | Bearing torque formula Double-acting releasing tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510896790.0A CN105443057B (en) | 2015-12-08 | 2015-12-08 | Bearing torque formula Double-acting releasing tool |
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| CN105443057A true CN105443057A (en) | 2016-03-30 |
| CN105443057B CN105443057B (en) | 2018-10-16 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649564A (en) * | 2016-03-31 | 2016-06-08 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Tool string for one-drill-trip window sidetrack drilling of open-hole horizontal well and technological method |
| CN106545306A (en) * | 2016-10-28 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of machine liquid one dropper |
| CN107269241A (en) * | 2017-07-12 | 2017-10-20 | 天津盛鑫华瑞石油技术有限公司 | Can guide type hydraulic releasing tool |
| CN107288563A (en) * | 2016-03-31 | 2017-10-24 | 中国石油天然气股份有限公司 | Releasing tool |
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| CN109098678A (en) * | 2018-10-19 | 2018-12-28 | 中石化江汉石油工程有限公司 | Releasing pup joint for horizontal well conveying tractor perforation tool |
| CN109138857A (en) * | 2018-10-17 | 2019-01-04 | 中国石油化工股份有限公司 | The hydraulic micro- rotation safety joint of down-hole string |
| CN115075758A (en) * | 2021-03-10 | 2022-09-20 | 中国石油化工股份有限公司 | Hydraulic composite releasing device |
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| CN105649564A (en) * | 2016-03-31 | 2016-06-08 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Tool string for one-drill-trip window sidetrack drilling of open-hole horizontal well and technological method |
| CN107288563A (en) * | 2016-03-31 | 2017-10-24 | 中国石油天然气股份有限公司 | Releasing tool |
| CN107288563B (en) * | 2016-03-31 | 2023-04-25 | 中国石油天然气股份有限公司 | Releasing tool |
| CN106545306A (en) * | 2016-10-28 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of machine liquid one dropper |
| CN106545306B (en) * | 2016-10-28 | 2019-04-02 | 中国石油化工股份有限公司 | A kind of machine liquid one dropper |
| CN108222854A (en) * | 2016-12-21 | 2018-06-29 | 中国石油天然气股份有限公司 | Stress joint |
| CN108222854B (en) * | 2016-12-21 | 2019-06-11 | 中国石油天然气股份有限公司 | Stress joint |
| CN107269241A (en) * | 2017-07-12 | 2017-10-20 | 天津盛鑫华瑞石油技术有限公司 | Can guide type hydraulic releasing tool |
| CN109138857A (en) * | 2018-10-17 | 2019-01-04 | 中国石油化工股份有限公司 | The hydraulic micro- rotation safety joint of down-hole string |
| CN109098678A (en) * | 2018-10-19 | 2018-12-28 | 中石化江汉石油工程有限公司 | Releasing pup joint for horizontal well conveying tractor perforation tool |
| CN109098678B (en) * | 2018-10-19 | 2024-01-26 | 中石化江汉石油工程有限公司 | Releasing nipple for horizontal well conveying tractor perforating tool |
| CN115075758A (en) * | 2021-03-10 | 2022-09-20 | 中国石油化工股份有限公司 | Hydraulic composite releasing device |
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