CN103899257A - Energy-saving workover rig based on double metering pumps or motors - Google Patents
Energy-saving workover rig based on double metering pumps or motors Download PDFInfo
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- CN103899257A CN103899257A CN201410164948.0A CN201410164948A CN103899257A CN 103899257 A CN103899257 A CN 103899257A CN 201410164948 A CN201410164948 A CN 201410164948A CN 103899257 A CN103899257 A CN 103899257A
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Abstract
The invention provides an energy-saving workover rig based on double metering pumps or motors. The energy-saving workover rig is composed of a small power machine, a large power machine, a gearbox, a roller, a small hydraulic pump, a large hydraulic pump, a hydraulic accumulator, the small metering hydraulic pump or motor, the large metering pump or motor, a torque coupler and the like. The small metering hydraulic pump or motor and the large metering pump or motor are respectively connected with a chain wheel of the torque coupler through clutches. In the lifting and dropping process of tubular columns, three force gears are configured, the tubular columns are lifted through different force gears according to different weights of the tubular columns needing lifting, and the power utilization rate of the power machines is increased; energy is recovered through different force gears according to different weights of the dropping tubular columns, and the energy recovery rate of gravitational potential energy of the tubular columns is increased; energy generated in the auxiliary operation period when the tubular columns are lifted by the power machines is stored by the hydraulic accumulator and is used in the tubular column lifting process, and the installed power of the power machines is reduced.
Description
Technical field
The present invention relates to the workover rig of oil, gas industry, is a kind of energy-conservation workover rig based on two quantitative pump/motors specifically.
Background technology
The modal a kind of operation of workover rig is hoist and transfer the operation of tubing string.The operation of tubing string of hoisting is intermittent periodic process.The time of the motor-driven tubing string that hoists of workover rig accounts for 1/4 of whole the single cycle, shackle, puts the subsidiary operation time such as single and accounts for 3/4.The motor-driven tubing string that hoists needs engine high power work, and shackle, engine small-power work while putting the less important work such as single.Conventional workover rig is in order to meet the needs of fast lifting tubing string, and installed power is all larger.The high-power power machine most of the time is to work under small-power, less economical, engine serious wear.
From down-hole, referred ground has stored suitable gravitional force to tubing string, and when putting into well under tubing string, the gravitional force of storage will discharge, and these energy are sizable.Conventional workover rig can not reclaim these energy, can only lean on brake to be become thermal energy consumption and fall.
So conventional workover rig all exists energy dissipation phenomenon in hoisting and transferring the operation of tubing string.Application number is that 91106336.6 Chinese patent " hydraulic energy accumulation petroleum workover rig " also can address this problem, this machine has been cancelled cylinder, the derrick of conventional workover rig, adopt three lifting hydraulic jacks carry out hoisting of tubing string and transfer operation, the shortcoming of bringing is thus that three lifting hydraulic jack complex structures, floor space are large, installation is inconvenient.
Application number is that 200610068974.9,200620010356.4 Chinese patent " hydraulic energy-accumulating workover rig " is the further improvement of the Chinese patent that is 91106336.6 to above-mentioned application number, this machine has been cancelled cylinder, the derrick of conventional workover rig, adopts a master cylinder carry out hoisting of tubing string and transfer operation.This master cylinder is divided into main chamber A, auxiliary oil pocket B and tri-oil pockets of auxiliary oil pocket C of rising, complex structure, and manufacture is processed and the difficulty of assembling is large, cost is high.
Summary of the invention
The energy dissipation phenomenon existing in hoisting and transferring the operation of tubing string in order to overcome conventional workover rig overcomes the above-mentioned shortcoming of existing hydraulic energy-storing workover rig simultaneously, the invention provides a kind of energy-conservation workover rig based on two quantitative pump/motors.
The technical solution adopted for the present invention to solve the technical problems is: based on the energy-conservation workover rig of two quantitative pump/motors, comprise shaft coupling, the clutch of low-power machine, large engine, gearbox, cylinder, hook block, roll brake, derrick and connection each several part, its special character is also to comprise primary hydraulic pump, large hydraulic pump, the first one way valve, the second one way valve, overflow valve, hydraulic accumulator, the first reversal valve, the second reversal valve, little quantitative hydraulic pump/motor, large quantitative hydraulic pump/motor, moment coupling device; Described moment coupling device comprises the first sprocket wheel, the second sprocket wheel and chain, and described the first sprocket wheel is connected by described chain with described the second sprocket wheel; The output shaft of described little quantitative hydraulic pump/motor is connected with the active part of first clutch, and the secondary part of first clutch is connected with described the first sprocket wheel; The output shaft of described large quantitative hydraulic pump/motor is connected with the active part of second clutch, and the secondary part of second clutch is connected with described the second sprocket wheel; The high pressure hydraulic fluid port of described little quantitative hydraulic pump/motor is communicated with an oily port of turnover of described the first reversal valve, the high pressure hydraulic fluid port of described large quantitative hydraulic pump/motor is communicated with one of described the second reversal valve oily port of turnover, and another of described the first reversal valve passes in and out that oily port passes in and out the oil-out of the oil-in of the oil transportation mouth of oily port, described hydraulic accumulator, described overflow valve, described the first one way valve with another of described the second reversal valve respectively and the oil-out of described the second one way valve is connected; The oil-in of described the first one way valve is communicated with the high pressure hydraulic fluid port of described primary hydraulic pump, and the oil-in of described the second one way valve is communicated with the high pressure hydraulic fluid port of described large hydraulic pump; The output shaft of described low-power machine is connected with the axle of described primary hydraulic pump, and the output shaft of described large engine is connected with the axle of described large hydraulic pump; Described the second sprocket wheel is connected with the power shaft of described gearbox by shaft coupling.
During the less important work of the tubing string that hoists, engine drives hydraulic pump to oil-filled in hydraulic accumulator, storage power.In the time hoisting tubing string, engine drives hydraulic pump and together with pressure oil in hydraulic accumulator, enters the quantitative hydraulic pump/motor tubing string that hoists.So the installed power of engine greatly reduces than conventional workover rig, be approximately only 1/4 of conventional workover rig.While transferring tubing string, engine can be shut down, tubing string is put into well under under Action of Gravity Field own, drive quantitative hydraulic pump/motor to oil-filled in hydraulic accumulator simultaneously, the pressure energy namely gravitional force of tubing string being become in hydraulic accumulator stores, and the less important works such as that the energy of this part recovery can be used for promoting is single, upper button are used.
The present invention compared with prior art has the following advantages:
1, compared with the conventional workover rig generally adopting, engine installed power can be reduced to 1/4 of conventional workover rig, can also reclaim the gravitional force discharging when tubing string is transferred.
2, compared with hydraulic energy-storing workover rig, do not adopt baroque hoist cylinder, cylinder, derrick, gearbox of conventional workover rig etc. are retained, only on conventional workover rig, increase a small amount of parts such as quantitative hydraulic pump/motor, hydraulic accumulator, just realized the identical function of hydraulic energy-storing workover rig, cost is low.
3, in the time hoisting tubing string in order more to make full use of engine energy, avoid " low load with strong power " phenomenon existing on conventional workover rig, configure three power gears, adopted different power gears to hoist according to the difference of the tubing string weight that hoists, improved engine power utilization.According to the difference of transferring tubing string weight, adopt different power gears to recover energy, improve the energy recovery rate of tubing string gravitional force.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.Referring to accompanying drawing, based on the energy-conservation workover rig of two quantitative pump/motors, comprise shaft coupling, the clutch of low-power machine 1, large engine 2, gearbox 8, cylinder 19, hook block 16, roll brake 20, derrick 24 and connection each several part, it also comprises primary hydraulic pump 3, large hydraulic pump 4, the first one way valve 10, the second one way valve 11, overflow valve 9, hydraulic accumulator, the first reversal valve 21, the second reversal valve 22, little quantitative hydraulic pump/motor 5, large quantitative hydraulic pump/motor 6, moment coupling device 7.The discharge capacity of primary hydraulic pump 3 is less than the discharge capacity of large hydraulic pump 4, and the discharge capacity of little quantitative hydraulic pump/motor 5 is less than the discharge capacity of large quantitative hydraulic pump/motor 6.Hydraulic accumulator is by holding fluid cylinder 12 and nitrogen bag 13 forms.Moment coupling device 7 comprises that the first sprocket wheel 71, the second sprocket wheel 72 and chain 73, the first sprocket wheels 71 are connected by chain 73 with the second sprocket wheel 72, and the first sprocket wheel 71 equates with the number of teeth of the second sprocket wheel 72.The output shaft of little quantitative hydraulic pump/motor 5 is connected with the active part of first clutch 14, and the secondary part of first clutch 14 is connected with the first sprocket wheel 71; The output shaft of large quantitative hydraulic pump/motor 6 is connected with the active part of second clutch 15, and the secondary part of second clutch 15 is connected with the second sprocket wheel 72.The high pressure hydraulic fluid port of little quantitative hydraulic pump/motor 5 is communicated with an oily port of turnover of the first reversal valve 21, the high pressure hydraulic fluid port of large quantitative hydraulic pump/motor 6 is communicated with an oily port of turnover of the second reversal valve 22, and another of the first reversal valve 21 passes in and out that oily port passes in and out the oil transportation mouth of oily port, hydraulic accumulator with another of the second reversal valve 22 respectively, oil-in, the oil-out of the first one way valve 10 and the oil-out of the second one way valve 11 of overflow valve 9 is connected.The oil-in of the first one way valve 10 is communicated with the high pressure hydraulic fluid port of primary hydraulic pump 3, and the oil-in of the second one way valve 11 is communicated with the high pressure hydraulic fluid port of large hydraulic pump 4.The output shaft of low-power machine 1 is connected with the axle of primary hydraulic pump 3, and the output shaft of large engine 2 is connected with the axle of large hydraulic pump 4.The second sprocket wheel 72 is connected with the power shaft 23 of gearbox 8 by shaft coupling 17.Two when gearbox 8 can be realized tubing string and hoists are just being kept off with one and reversing gear, gear 83, gear 85 empty sets are on power shaft 23, engaging sleeve 88 is between gear 83, gear 85, stir the left and right of engaging sleeve 88, the extension that can realize respectively gear 83 or gear 85 closes, exported by gear 84 or gear 86 thereby realize power, realize two and just keep off; Gear 81, gear 82 be in normal engagement, and gear 87 empty sets are on axle, and engaging sleeve 89 is stirred the extension that can realize gear 87 to the right and closed, and makes output shaft reversion by gear 86 outputting powers, reverses gear thereby realize.The power that gearbox 8 is exported rotates by shaft coupling 18 head rolls 19, by hook block 16 tubing string that hoists.
Because in the time hoisting tubing string, the weight of tubing string changes, and is reducing gradually.In order more to make full use of engine energy, avoid " low load with strong power " phenomenon of existing on conventional workover rig, configure three power gears.In the time hoisting little weight tubing string, the little power gear that adopts low-power machine 1 and little quantitative hydraulic pump/motor 5 to form, in the time hoisting medium wt tubing string, the middle power gear that adopts large engine 2 and large quantitative hydraulic pump/motor 6 to form, in the time hoisting large weight tubing string, adopt the gear energetically of two engines 1,2 and two quantitative hydraulic pump/ motor 5,6 compositions.Can realize like this " large horse traction cart, pony is drawn dolly ", make full use of energy, save energy.
The course of work of tubing string of hoisting under gear is energetically as follows.During the less important work of the tubing string that hoists, the first reversal valve 21 and the second reversal valve 22 are all placed in upper, and roll brake 20 is checked cylinder 19, and engine 1,2 drives respectively hydraulic pump 3,4 to oil-filled in hydraulic accumulator, storage power.In the time hoisting tubing string, select suitable gearbox gear, the first reversal valve 21 and the second reversal valve 22 are all placed in the next, unclamp roll brake 20, engine 1,2 drives hydraulic pumps 3,4 to enter two quantitative hydraulic pump/ motors 5,6 with together with pressure oil in hydraulic accumulator, drive quantitative hydraulic pump/ motor 5,6 to rotate, then rotate by moment coupling device 7, gearbox 8 head rolls 19, by hook block 16 tubing string that hoists.So the general power of engine 1,2 greatly reduces than conventional workover rig, be approximately only 1/4 of conventional workover rig.
The course of work of tubing string of hoisting under middle power gear is as follows.Low-power machine 1 is shut down, and the first reversal valve 21 is placed in upper, and clutch 14 separates.During the less important work of the tubing string that hoists, the second reversal valve 22 is placed in upper, and roll brake 20 is checked cylinder 19, and large engine 2 drives large hydraulic pump 4 to oil-filled in hydraulic accumulator, storage power.In the time hoisting tubing string, select suitable gearbox gear, the second reversal valve 22 is placed in the next, unclamp roll brake 20, large engine 2 drives large hydraulic pump 4 to drive large quantitative hydraulic pump/motor 6 to rotate with together with pressure oil in hydraulic accumulator, rotate by gearbox 8 head rolls 19 again, by hook block 16 tubing string that hoists.
The course of work of tubing string of hoisting under little power gear is as follows.Large engine 2 is shut down, and the second reversal valve 22 is placed in upper, and clutch 15 separates.During the less important work of the tubing string that hoists, the first reversal valve 21 is placed in upper, and roll brake 20 is checked cylinder 19, and low-power machine 1 drives primary hydraulic pump 3 to oil-filled in hydraulic accumulator, storage power.In the time hoisting tubing string, select suitable gearbox gear, the first reversal valve 21 is placed in the next, unclamp roll brake 20, low-power machine 1 drives primary hydraulic pump 3 to drive little quantitative hydraulic pump/motor 5 to rotate with together with pressure oil in hydraulic accumulator, rotate by moment coupling device 7, gearbox 8 head rolls 19 again, by hook block 16 tubing string that hoists.
Hoist tubing string under a certain power gear time, when the tubing string weight hoisting hour, stir engaging sleeve 88 and gear 85 hung close, by gear 86 outputting powers, use the high gear fast lifting of gearbox.In the time that the tubing string weight hoisting is larger, stir engaging sleeve 88 gear 83 extensions are closed, by gear 84 outputting powers, hoist with the low gear of gearbox.
In the time transferring tubing string, the weight of tubing string also changes, and is increasing gradually.The tubing string very light in weight of transferring at the beginning, now two quantitative hydraulic pump/motors do not engage work.Along with transferring the increase of tubing string weight, by little quantitative hydraulic pump/motor 5 joint work, under little power gear, recovery tube post is transferred the gravitional force discharging.When tubing string weight is increased to a certain degree, by large quantitative hydraulic pump/motor 6 joint work, under middle power gear, recovery tube post is transferred the gravitional force discharging.When tubing string weight is increased to a certain degree again, two quantitative hydraulic pump/ motors 5,6 are engaged to work simultaneously, under gear energetically, recovery tube post is transferred the gravitional force discharging, and the gravitional force now reclaiming is maximum.
Now, to transfer tubing string as example under gear energetically, concrete operating process is described.While transferring tubing string, engine 1, 2 shutdown, engaging clutch 14, 15, the first reversal valve 21 and the second reversal valve 22 are all placed in the next, select suitable gearbox gear, unclamp roll brake 20, tubing string is put into well under under Action of Gravity Field own, make cylinder 19 rotate simultaneously, the rotation of cylinder 19 is by gearbox 8, moment coupling device 7, the clutch 14 and 15 engaging drives two quantitative hydraulic pump/ motors 5, 6 rotate simultaneously, now two quantitative hydraulic pump/ motors 5, 6 are operated in pump operating mode, to oil-filled in hydraulic accumulator, the pressure energy namely gravitional force of tubing string being become in hydraulic accumulator stores.This part recovers energy and can re-use, and completes the work during less important work with it, promotes single operation as completed, and drives on tubing tongs and detains, and drives compressor, and the energy of controlled clutch and brake etc. is provided.These work in the past are all completed by engine, now by having recovered energy, have greatly saved the energy.
Under little power gear, transfer and under tubing string, middle power gear, transfer that under tubing string and gear energetically, to transfer the process of tubing string similar, while just transferring tubing string under little power gear, all the time clutch 15 is separated, all the time the second reversal valve 22 is placed in upper; Transfer tubing string under middle power gear time, all the time clutch 14 is separated, all the time the first reversal valve 21 is placed in upper.
In the time that a certain power gear is transferred tubing string, when the tubing string weight of transferring hour, stir engaging sleeve 88 and gear 85 hung close, by gear 85 outputting powers, transfer with the high gear of gearbox.In the time that the tubing string weight of transferring is larger, stir engaging sleeve 88 gear 83 extensions are closed, by gear 83 outputting powers, transfer with the low gear of gearbox.
Claims (2)
1. the energy-conservation workover rig based on two quantitative pump/motors, comprise low-power machine (1), large engine (2), gearbox (8), cylinder (19), hook block (16), roll brake (20), the shaft coupling of derrick (24) and connection each several part, clutch, characterized by further comprising primary hydraulic pump (3), large hydraulic pump (4), the first one way valve (10), the second one way valve (11), overflow valve (9), hydraulic accumulator, the first reversal valve (21), the second reversal valve (22), little quantitative hydraulic pump/motor (5), large quantitative hydraulic pump/motor (6), moment coupling device (7), described moment coupling device (7) comprises the first sprocket wheel (71), the second sprocket wheel (72) and chain (73), and described the first sprocket wheel (71) is connected by described chain (73) with described the second sprocket wheel (72), the output shaft of described little quantitative hydraulic pump/motor (5) is connected with the active part of first clutch (14), and the secondary part of first clutch (14) is connected with described the first sprocket wheel (71), the output shaft of described large quantitative hydraulic pump/motor (6) is connected with the active part of second clutch (15), and the secondary part of second clutch (15) is connected with described the second sprocket wheel (72), the high pressure hydraulic fluid port of described little quantitative hydraulic pump/motor (5) is communicated with an oily port of turnover of described the first reversal valve (21), the high pressure hydraulic fluid port of described large quantitative hydraulic pump/motor (6) is communicated with an oily port of turnover of described the second reversal valve (22), another of described the first reversal valve (21) passes in and out oily port and passes in and out oily port with another of described the second reversal valve (22) respectively, the oil transportation mouth of described hydraulic accumulator, the oil-in of described overflow valve (9), the oil-out of the oil-out of described the first one way valve (10) and described the second one way valve (11) is connected, the oil-in of described the first one way valve (10) is communicated with the high pressure hydraulic fluid port of described primary hydraulic pump (3), and the oil-in of described the second one way valve (11) is communicated with the high pressure hydraulic fluid port of described large hydraulic pump (4), the output shaft of described low-power machine (1) is connected with the axle of described primary hydraulic pump (3), and the output shaft of described large engine (2) is connected with the axle of described large hydraulic pump (4), described the second sprocket wheel (72) is connected with the power shaft of described gearbox (8) by shaft coupling.
2. the energy-conservation workover rig based on two quantitative pump/motors according to claim 1, it is characterized in that described hydraulic accumulator forms the energy-conservation workover rig based on two quantitative pump/motors according to claim 1 by holding fluid cylinder (12) and nitrogen bag (13), the hydraulic accumulator described in it is characterized in that is by holding fluid cylinder (12) and nitrogen bag (13) forms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410164948.0A CN103899257B (en) | 2014-04-23 | 2014-04-23 | Based on the energy-conservation workover rig of two constant displacement pump or fixed displacement motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410164948.0A CN103899257B (en) | 2014-04-23 | 2014-04-23 | Based on the energy-conservation workover rig of two constant displacement pump or fixed displacement motor |
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| CN103899257A true CN103899257A (en) | 2014-07-02 |
| CN103899257B CN103899257B (en) | 2016-03-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104627881A (en) * | 2015-03-04 | 2015-05-20 | 广东工业大学 | Super deep floating type drilling multifunctional energy-saving type heavy compensation winch and operation method thereof |
| CN106089124A (en) * | 2016-08-15 | 2016-11-09 | 中原特种车辆有限公司 | A kind of Dual-powered workover rig pneumatic control system and method |
| CN107420072A (en) * | 2017-09-21 | 2017-12-01 | 李振河 | A kind of double motor driving hydraulic pumping unit based on Hydrostatic drive technology |
| CN110296110A (en) * | 2019-06-14 | 2019-10-01 | 庆安集团有限公司 | A kind of Dual-energy source hatch door transient state actuating system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5390747A (en) * | 1992-12-10 | 1995-02-21 | Drilling Technology Research Institute Of Shengli Oilfield | Well rig lift system and a hydraulic energy-storing well rig lift system |
| CN101382046A (en) * | 2008-10-23 | 2009-03-11 | 烟台大学 | Inertia variable fly wheel energy storage type well repairing machine |
| CN201344001Y (en) * | 2008-11-25 | 2009-11-11 | 烟台大学 | Energy-saving petroleum electric drilling rig |
-
2014
- 2014-04-23 CN CN201410164948.0A patent/CN103899257B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5390747A (en) * | 1992-12-10 | 1995-02-21 | Drilling Technology Research Institute Of Shengli Oilfield | Well rig lift system and a hydraulic energy-storing well rig lift system |
| CN101382046A (en) * | 2008-10-23 | 2009-03-11 | 烟台大学 | Inertia variable fly wheel energy storage type well repairing machine |
| CN201344001Y (en) * | 2008-11-25 | 2009-11-11 | 烟台大学 | Energy-saving petroleum electric drilling rig |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104627881A (en) * | 2015-03-04 | 2015-05-20 | 广东工业大学 | Super deep floating type drilling multifunctional energy-saving type heavy compensation winch and operation method thereof |
| CN106089124A (en) * | 2016-08-15 | 2016-11-09 | 中原特种车辆有限公司 | A kind of Dual-powered workover rig pneumatic control system and method |
| CN107420072A (en) * | 2017-09-21 | 2017-12-01 | 李振河 | A kind of double motor driving hydraulic pumping unit based on Hydrostatic drive technology |
| CN110296110A (en) * | 2019-06-14 | 2019-10-01 | 庆安集团有限公司 | A kind of Dual-energy source hatch door transient state actuating system |
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