CN203516246U - Rotary guiding tool hydraulic system power driving device - Google Patents
Rotary guiding tool hydraulic system power driving device Download PDFInfo
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- CN203516246U CN203516246U CN201320640099.2U CN201320640099U CN203516246U CN 203516246 U CN203516246 U CN 203516246U CN 201320640099 U CN201320640099 U CN 201320640099U CN 203516246 U CN203516246 U CN 203516246U
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Abstract
The utility model discloses a rotary guiding tool hydraulic system power driving device. The rotary guiding tool hydraulic system power driving device comprises a hydraulic control unit, a plunger pump, a pressure balance cavity, a first tee and a second tee, wherein the hydraulic control unit is provided with a first high pressure oil port and a first low pressure oil port; the plunger pump comprises a cylinder, a plunger, an oil inlet and an oil outlet; the pressure balance cavity is partitioned into three cavities by a first baffle plate and a second baffle plate which are a drilling fluid cavity, a low pressure oil cavity and a high pressure oil cavity, a through hole, a second low pressure oil port and a second high pressure oil port are formed in the three cavities respectively, an elastic component is arranged inside the low pressure oil cavity, and two ends of the elastic component are fixedly connected with the side wall of the low pressure oil cavity and the second baffle plate respectively; the first tee is respectively connected with the first low pressure oil port, the second low pressure oil port and the oil inlet, and an oil inlet check valve is arranged on a pipeline between the first tee and the oil inlet; the second tee is respectively connected with the first high pressure oil port, the second high pressure oil port and the oil outlet, and an oil outlet check valve is arranged on a pipeline between the oil outlet and the second tee. The rotary guiding tool hydraulic system power driving device is simple in structure, easy to maintain and high in reliability.
Description
Technical field
The utility model relates to oil drilling downhole instrument technical field, especially a kind of rotary steerable tool hydraulic system Power Drive Unit.
Background technique
Since the eighties in 20th century, domestic and international most of oil field enters development late stage in succession, and new exploratory area piece major part is in particular surroundings, and as areas such as ocean, Tan Hai, deserts, this just makes exploration and development difficulty and cost greatly increase.On the other hand, old filed, for realizing stable yields, is faced with the development problem of the difficult mining-employed reserveses such as a large amount of edge oil-gas reservoir, independent little oil-gas reservoir, Complicated Fault-Block Hydrocarbon Reservoir, ultra-thin oil-gas reservoir.The needs of exploration and development situation are promoting the evolution and development of well type, and the complex structural wells such as extended reach well, ultra-thin oil-reservoir water horizontal well, multi-branched well shared ratio in oilfield prospecting developing is increasing.Rotary steerable drilling technology is the high new drilling techniques occurring in order to adapt to the needs of these complex structural well drillng operations, is research emphasis and the developing direction of modern steerable drilling.Rotary steerable drilling technology is under the condition of drill string full rotation, to carry out steerable drilling, it is equipped with the rotary steerable tool of a controlled offset stabilizer or capable of controlling drilling head lateral force (guiding force) above drill bit, and be furnished with complete rotary steerable drilling control system, when creeping into, drill string rotating can regulate and control a technology of wellbore trajectory.
Rotary steerable tool (hereinafter to be referred as steering tool) is the core drive actuator of rotary steering system, and the core that the hydraulic system of rotary steerable tool (hereinafter to be referred as hydraulic system) is steering tool forms, it is the power producer that produces lateral force, in real-time drilling, occupied most of power consumption of steering tool, mainly abroad to power to steering tool by increasing a high-power down-hole turbogenerator at present, but because turbogenerator exists rapid wear attrition component (as rotor), through all after dates of certain hour, need maintaining, or because badly easily making generator, field condition occurs to block up, the phenomenons such as card make generator cisco unity malfunction, thereby limited the continuous service time of steering tool and reduced the Security of whole drilling well.
Therefore, need to invent a kind of novel rotary steerable tool hydraulic power drive unit, do not need down-hole turbogenerator just can provide power source to hydraulic system, designed down-hole pressure Equilibrator simultaneously, can auto-compensation ambient temperature and the impact of pressure variation on hydraulic system.
Model utility content
Main purpose of the present utility model is, a kind of novel rotary steerable tool hydraulic system Power Drive Unit is provided, and steering tool does not need turbogenerator power supply just can produce high-power output.The utility model has designed down-hole pressure Equilibrator simultaneously, can automatically to hydraulic system pressure, carry out balance, compensation is due to the impact of environmental change on hydraulic system, whole device components and parts used are few, dismounting, easy to maintenance, can effectively improve the working life of rotary steerable tool hydraulic unit, increase Security and the reliability of drilling well simultaneously.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.
By a kind of rotary steerable tool hydraulic system Power Drive Unit, comprising:
Hydraulic control unit, which is provided with the first high pressure hydraulic fluid port and the first low pressure hydraulic fluid port;
Plunger pump, comprises cylinder body and is arranged on the plunger in cylinder body, is provided with filler opening and oil outlet on described cylinder body;
Pressure balance cavity, one sidewall is non-rotating cover outer wall, inside at described pressure balance cavity is divided into three cavitys by the first baffle plate and second baffle, be respectively drilling fluid cavity, low pressure oil cavity and high pressure oil cavity, and described the first baffle plate is placed between described non-rotating cover outer wall and described second baffle, wherein:
Described the first baffle plate and second baffle seal slip in described low-pressure balance cavity;
In described low pressure oil cavity, be provided with elastic member, one end of described elastic member is fixedly connected with the sidewall of described low pressure oil cavity, and the other end is fixedly connected with second baffle;
On described non-rotating cover outer wall, be provided with through hole;
On described low pressure oil cavity, be provided with the second low pressure hydraulic fluid port, on described high pressure oil cavity, be provided with the second high pressure hydraulic fluid port;
The first threeway, is connected through pipeline with filler opening with described the first low pressure hydraulic fluid port, the second low pressure hydraulic fluid port respectively, on the pipeline between described the first threeway and described filler opening, is provided with in line check valve;
The second threeway, is connected through pipeline with oil outlet with described the first high pressure hydraulic fluid port, the second high pressure hydraulic fluid port respectively, on the pipeline between described oil outlet and described the second threeway, is provided with oil outlet one-way valve.
Preferably, described rotary steerable tool hydraulic system Power Drive Unit also comprises overflow pipe, its one end is connected with the pipeline between the first high pressure hydraulic fluid port and the second high pressure hydraulic fluid port, the other end is connected with the pipeline between the first low pressure hydraulic fluid port and the second low pressure hydraulic fluid port, on described overflow pipe, is provided with relief valve.
Preferably, described through hole is provided with filter.
Preferably, described plunger pump also comprises central principal axis and is arranged on the cam on described central principal axis.
Preferably, described cam be two with last protruding terminus.
Preferably, described elastic member is dish spring.
Preferably, described cylinder body comprises oil cylinder and cylinder sleeve, and described cylinder sleeve is arranged in described oil cylinder.
Preferably, the opening end at described cylinder body is set with gland.
Preferably, on the described gland face relative with described plunger, be provided with seal ring.
By technique scheme, a kind of rotary steerable tool hydraulic system Power Drive Unit the utility model proposes at least has following advantages:
(1) the utility model adopts cam-assembly of the plunger pump as the power resources of rotary steerable tool hydraulic system, has saved high-power down-hole turbogenerator, simple in structure, is convenient to safeguard, reliability is high;
(2) the utility model is applicable to utilize sealing fluid force feed as the actuator that drives power source.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the structural representation of rotary steerable tool hydraulic system Power Drive Unit;
Fig. 2 is the structural representation of plunger pump;
Fig. 3 is the structural representation of cam.
Embodiment
For further setting forth the utility model, be to reach technological means and the effect that predetermined model utility object is taked, below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and effect thereof to a kind of rotary steerable tool hydraulic system Power Drive Unit according to the utility model proposes, be described in detail as follows.In following explanation, the not necessarily same embodiment that different " embodiments " or " embodiment " refer to.In addition, special characteristic, structure or the feature in one or more embodiment can be combined by any suitable form.
A kind of rotary steerable tool hydraulic system Power Drive Unit as shown in Figure 1, comprising:
1) hydraulic control unit 1, which is provided with the first high pressure hydraulic fluid port 11 and the first low pressure hydraulic fluid port 12, described the first high pressure hydraulic fluid port 11 is for providing high pressure oil to described hydraulic control unit 1, the energy that described hydraulic control unit 1 provides by high pressure oil, external outputting power, described high pressure oil becomes low pressure oil after acting, and described low pressure oil is discharged through the first low pressure hydraulic fluid port 12;
2) plunger pump 2, comprise cylinder body and be arranged on the plunger in cylinder body, on described cylinder body, be provided with filler opening 21 and oil outlet 22, what through the filler opening 21 of described cylinder body, enter described cylinder body is low pressure oil, described low pressure oil becomes high pressure oil after by described plunger compression, and described high pressure oil is discharged through described oil outlet 22;
3) pressure balance cavity 3, one sidewall is non-rotating cover outer wall 30, inside at described pressure balance cavity 3 is divided into three cavitys by the first baffle plate 31 and second baffle 32, be respectively drilling fluid cavity 33, low pressure oil cavity 34 and high pressure oil cavity 35, and described the first baffle plate 31 is placed between described non-rotating cover outer wall 30 and described second baffle 32, wherein:
A) described the first baffle plate 31 and second baffle 32 slide in the interior sealing of described pressure balance cavity 3, and described the first baffle plate 31 and second baffle 32 have maintained the pressure balance of described drilling fluid cavity 33, low pressure oil cavity 34 and high pressure oil cavity 35;
B) in described low pressure oil cavity 34, be provided with elastic member 36, one end of described elastic member 36 is fixedly connected with the sidewall of described low pressure oil cavity 34, the other end is fixedly connected with second baffle 32, that is to say, the hydraulic pressure in described high pressure oil cavity 35 is hydraulic pressure in described low pressure oil cavity 34 and the elastic force sum of elastic member 36;
C) on described non-rotating cover outer wall 30, be provided with through hole 37, described drilling fluid can enter well by described through hole 37;
D) on described low pressure oil cavity 34, be provided with the second low pressure hydraulic fluid port 38, on described high pressure oil cavity 35, be provided with the second high pressure hydraulic fluid port 39;
4) the first threeway 4, is connected through pipeline with filler opening 21 with described the first low pressure hydraulic fluid port 12, the second low pressure hydraulic fluid port 38 respectively, on the pipeline between described the first threeway 4 and described filler opening 21, is provided with in line check valve;
5) the second threeway 5, is connected through pipeline with oil outlet 22 with described the first high pressure hydraulic fluid port 11, the second high pressure hydraulic fluid port 39 respectively, on the pipeline between described oil outlet 22 and described the second threeway 5, is provided with oil outlet one-way valve.
Pressure difference in pressure in described high pressure oil cavity 35 and described low pressure oil cavity 34 is the elastic force of described elastic member 36, described low pressure oil enters described plunger pump 2 through described the first threeway 4 and described in line check valve, the plunger of described plunger pump 2 is in up process, described low pressure oil is become to high pressure oil, described high pressure oil is discharged described plunger pump 2 through described oil outlet one-way valve and the second threeway 5, then, described high pressure oil enters respectively hydraulic control unit 1 and high pressure oil cavity 35, the high pressure oil that enters described hydraulic control unit 1 becomes low pressure oil after acting, through the first low pressure hydraulic fluid port 12, discharge described hydraulic control unit 1.
Described in line check valve and described oil outlet one-way valve have limited the flow direction of hydraulic oil, be oil can only be from low pressure oil district (pipeline between described the first low pressure hydraulic fluid port 12 and described the second low pressure hydraulic fluid port 38) to described plunger pump 2, then from described plunger pump 2 to high pressure oil area (pipeline described the first high pressure hydraulic fluid port 11 and described the second high pressure hydraulic fluid port 39).
Pressure on connecting pipe between described the first low pressure hydraulic fluid port 12 and described the second low pressure hydraulic fluid port 38 is identical, and the pressure on the connecting pipe between described the first low pressure hydraulic fluid port 12 and described the second low pressure hydraulic fluid port 38 is identical.
Described low pressure oil is the fuel tank of described rotary steerable tool hydraulic system Power Drive Unit, has accumulation of energy function.The high pressure oil that described elastic member 36 and described second baffle 32 are discharged for balance plunger pump 2.
When temperature or pressure variation, the first baffle plate 31 can change by auto-compensation, moves left and right, and the first baffle plate 31 can adapt to the variation of external environment, utilizes the first baffle plate 31 to realize pressure balance cavity 3 internal and external pressure balances, can effectively resist corrosion.
Preferably, described rotary steerable tool hydraulic system Power Drive Unit also comprises overflow pipe, its one end is connected with the pipeline between the first high pressure hydraulic fluid port 11 and the second high pressure hydraulic fluid port 39, the other end is connected with the pipeline between the first low pressure hydraulic fluid port 12 and the second low pressure hydraulic fluid port 38, is provided with relief valve 6 on described overflow pipe.Described relief valve 6 is the safety valve of described rotary steerable tool hydraulic system Power Drive Unit, and when the pressure of described drive unit is greater than setting value, relief valve 6 produces Unloading Effect, and described drive unit is protected.
Preferably, described through hole 37 is provided with filter.Described filter can stop larger particles in mud circulation to enter in non-rotating cover, thereby reduces the damage of large particle to balance baffle plate, increases system reliability.
Preferably, described elastic member 36 is dish spring.
Preferably, described plunger pump 2 also comprises central principal axis 23 and is arranged on the cam 24 on described central principal axis 23.During work, the plunger pump 2 that rotarily drives of central principal axis 23 is realized to-and-fro motion, to-and-fro motion Zhong Cong low pressure oil district's oil suction, then oil is injected to high pressure oil area, in line check valve and oil outlet one-way valve have guaranteed the one-way flow of hydraulic oil, and oil can only be from low pressure oil district to plunger pump 2, then from plunger pump 2 to high pressure oil area, high pressure oil area connects hydraulic control unit 1 simultaneously, can realize the lateral force of steering tool hydraulic system export by suitable hydraulic control circuit.Relief valve 6 plays safety effect in system, is used for the maximum service pressure that restriction system allows.
Described plunger pump 2 is hydraulic power supply, by central principal axis 23 and non-rotating cover relatively rotate drive, the live axle that central principal axis 23 is steering tool, can directly connect drill bit.Rotating disk or top are driven to described central principal axis 23 rotating power are provided.
Preferably, described cylinder body comprises oil cylinder 25 and cylinder sleeve 26, and described cylinder sleeve 26 is arranged in described oil cylinder 25.
Preferably, the opening end at described cylinder body is set with gland 27.
Preferably, on the described gland face relative with described plunger, be provided with seal ring 28.
Preferably, described cam 24 be two with last protruding terminus.As shown in Figure 3, described cam 24 complete cycles are provided with four protruding terminuss.Certainly, also can need and rotary speed is designed to the cam 24 of other number according to drilling well discharge capacity.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (9)
1. a rotary steerable tool hydraulic system Power Drive Unit, is characterized in that, comprising:
Hydraulic control unit, which is provided with the first high pressure hydraulic fluid port and the first low pressure hydraulic fluid port;
Plunger pump, comprises cylinder body and is arranged on the plunger in cylinder body, is provided with filler opening and oil outlet on described cylinder body;
Pressure balance cavity, one sidewall is non-rotating cover outer wall, inside at described pressure balance cavity is divided into three cavitys by the first baffle plate and second baffle, be respectively drilling fluid cavity, low pressure oil cavity and high pressure oil cavity, and described the first baffle plate is placed between described non-rotating cover outer wall and described second baffle, wherein:
Described the first baffle plate and second baffle seal slip in described low-pressure balance cavity;
In described low pressure oil cavity, be provided with elastic member, one end of described elastic member is fixedly connected with the sidewall of described low pressure oil cavity, and the other end is fixedly connected with second baffle;
On described non-rotating cover outer wall, be provided with through hole;
On described low pressure oil cavity, be provided with the second low pressure hydraulic fluid port, on described high pressure oil cavity, be provided with the second high pressure hydraulic fluid port;
The first threeway, is connected through pipeline with filler opening with described the first low pressure hydraulic fluid port, the second low pressure hydraulic fluid port respectively, on the pipeline between described the first threeway and described filler opening, is provided with in line check valve;
The second threeway, is connected through pipeline with oil outlet with described the first high pressure hydraulic fluid port, the second high pressure hydraulic fluid port respectively, on the pipeline between described oil outlet and described the second threeway, is provided with oil outlet one-way valve.
2. rotary steerable tool hydraulic system Power Drive Unit according to claim 1, is characterized in that,
Also comprise overflow pipe, its one end is connected with the pipeline between the first high pressure hydraulic fluid port and the second high pressure hydraulic fluid port, and the other end is connected with the pipeline between the first low pressure hydraulic fluid port and the second low pressure hydraulic fluid port, on described overflow pipe, is provided with relief valve.
3. rotary steerable tool hydraulic system Power Drive Unit according to claim 1, is characterized in that,
Described through hole is provided with filter.
4. rotary steerable tool hydraulic system Power Drive Unit according to claim 1, is characterized in that,
Described elastic member is dish spring.
5. rotary steerable tool hydraulic system Power Drive Unit according to claim 1, is characterized in that,
Described plunger pump also comprises central principal axis and is arranged on the cam on described central principal axis.
6. rotary steerable tool hydraulic system Power Drive Unit according to claim 5, is characterized in that,
Described cam be two with last protruding terminus.
7. rotary steerable tool hydraulic system Power Drive Unit according to claim 1, is characterized in that,
Described cylinder body comprises oil cylinder and cylinder sleeve, and described cylinder sleeve is arranged in described oil cylinder.
8. according to the rotary steerable tool hydraulic system Power Drive Unit described in any one in claim 5 to 7, it is characterized in that,
Opening end at described cylinder body is set with gland.
9. rotary steerable tool hydraulic system Power Drive Unit according to claim 8, is characterized in that,
On the described gland face relative with described plunger, be provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320640099.2U CN203516246U (en) | 2013-10-16 | 2013-10-16 | Rotary guiding tool hydraulic system power driving device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320640099.2U CN203516246U (en) | 2013-10-16 | 2013-10-16 | Rotary guiding tool hydraulic system power driving device |
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| CN203516246U true CN203516246U (en) | 2014-04-02 |
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| CN201320640099.2U Expired - Fee Related CN203516246U (en) | 2013-10-16 | 2013-10-16 | Rotary guiding tool hydraulic system power driving device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661851A (en) * | 2018-06-27 | 2018-10-16 | 刘闪闪 | A kind of hydraulic-driven rotating mechanism |
| CN109854569A (en) * | 2019-01-29 | 2019-06-07 | 中国科学院地质与地球物理研究所 | A kind of test device of rotary steerable tool hydraulic control system |
| CN111236839A (en) * | 2020-03-10 | 2020-06-05 | 中石化江汉石油工程有限公司测录井公司 | Hydraulic sidewall contact device of cased well cable logging tractor |
-
2013
- 2013-10-16 CN CN201320640099.2U patent/CN203516246U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661851A (en) * | 2018-06-27 | 2018-10-16 | 刘闪闪 | A kind of hydraulic-driven rotating mechanism |
| CN108661851B (en) * | 2018-06-27 | 2024-01-12 | 刘闪闪 | Hydraulic drive rotary mechanism |
| CN109854569A (en) * | 2019-01-29 | 2019-06-07 | 中国科学院地质与地球物理研究所 | A kind of test device of rotary steerable tool hydraulic control system |
| CN109854569B (en) * | 2019-01-29 | 2020-07-07 | 中国科学院地质与地球物理研究所 | Testing device for hydraulic control system of rotary steering tool |
| CN111236839A (en) * | 2020-03-10 | 2020-06-05 | 中石化江汉石油工程有限公司测录井公司 | Hydraulic sidewall contact device of cased well cable logging tractor |
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| C14 | Grant of patent or utility model | ||
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| CP03 | Change of name, title or address |
Address after: 100176, Beijing, Beijing economic and Technological Development Zone, 16 street, No. 6, building 3, Daxing District Patentee after: Beijing baud Guang Sheng Petrotechnik Ltd. Address before: 100176, Beijing, Beijing, Beijing Daxing District economic and Technological Development Zone, No. 16, 6 street, building 3 Patentee before: Beijing Botenear Petroleum Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20181016 |