CN108425637A - A kind of generating power downhole drilling rod and its electricity-generating method - Google Patents
A kind of generating power downhole drilling rod and its electricity-generating method Download PDFInfo
- Publication number
- CN108425637A CN108425637A CN201810330826.2A CN201810330826A CN108425637A CN 108425637 A CN108425637 A CN 108425637A CN 201810330826 A CN201810330826 A CN 201810330826A CN 108425637 A CN108425637 A CN 108425637A
- Authority
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- China
- Prior art keywords
- drilling rod
- power generation
- drilling
- lithium battery
- electricity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 164
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010248 power generation Methods 0.000 claims abstract description 57
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 37
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000005611 electricity Effects 0.000 claims abstract description 33
- 238000004891 communication Methods 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
Abstract
The invention discloses a kind of generating power downhole drilling rod and its electricity-generating method, generating power downhole drilling rod, including lithium battery, power generation drilling rod and common drilling rod, screwed connection between screwed connection, power generation drilling rod and common drilling rod between lithium battery and power generation drilling rod；Power generation drilling rod is made of outer tube, thermo-electric generation element, inner tube, upper communication conductive wire and lower communication conductive wire, the axial direction and circumferential direction in gap of the thermo-electric generation element between inner tube and outer tube are evenly distributed, the upper and lower side of serial or parallel connection or serial-parallel mirror between each thermo-electric generation element, thermo-electric generation element is connect with upper communication conductive wire and lower communication conductive wire respectively；The power supply of power generation drilling rod is connect with lithium battery, and power generation drilling rod is powered to lithium battery power supply, lithium battery to downhole hardware.It is generated electricity using the temperature difference in power generation drilling rod and in annular gap between drilling fluid in drilling well, and then electric energy is provided for downhole hardware.Stability, the drilling efficiency of work are improved, and can realize core-drilling, it is simple in structure.
Description
Technical field
The invention belongs to petroleum gas and geological drilling fields, and in particular to a kind of hair providing electric power for down-hole equipment
Electric drill bar and electricity-generating method.
Background technology
Recently as bad ground oil-gas reservoir and the increase of mineral reserve development difficulty and depth, drilling technique also proposed
New requirement.Measurement while drilling, shaft bottom auxiliary tool and intelligent drilling all come into being.How to realize shaft bottom electric device and
The high efficiency power of measurement while-drilling instrument becomes the difficult point of such technology development.Current widely used following several method, high-performance
Lithium battery, mud turbine generator and wire cable drilling rod.Wherein, there is the shortcomings that needing to frequently replace in high-performance lithium battery；
Mud turbine generator is complicated, and working efficiency is unstable, and can not achieve core-drilling；And wire cable drilling rod is not suitable for
It is crept into deep-well, it is not easy to repair since drilling rod quantity is more after accidents happened, and cable is easily broken in hole.
In drilling process, drilling fluid cools down drill bit in bottom hole, and carries and returned on a large amount of heat.Drilling fluid is in hole
In inner cyclic process, heat exchange is had occurred between stratum, drilling rod, generated between the drilling fluid in drilling rod and in annular gap
The temperature difference, wherein drilling fluid temperature is low in drilling rod, and drilling fluid temperature is high in annular clearance.By taking hole depth 5000m as an example, from bottom hole
The temperature range of drilling fluid and drilling fluid in annular clearance is 0~25 ° in the drilling rod of earth's surface, and wherein the bottom hole temperature difference is 0 DEG C, from
Up the temperature difference gradually rises bottom hole, reaches 25 DEG C of maximum value to 3000 meters, continues the up temperature difference and starts to reduce, the temperature difference of earth's surface is
10℃.It generates electricity using the temperature difference after temperature difference is more than 0 DEG C, and unit interval generated energy increases with the temperature difference and increased.Make
It generates electricity in this way, not only takes full advantage of resource, and can realize the stable power-supplying to downhole hardware.
Invention content
The object of the present invention is to provide a kind of generating power downhole drilling rod and electricity-generating method, may be implemented to utilize drilling annular gap
And the temperature difference in drilling rod between drilling fluid generates electricity, and is power device stable power-supplying in hole, and apparatus structure is simple, is not required to change
Become the operating type routinely drilled.It is power generation drilling rod not need complete opening all simultaneously, only need to arrange a small amount of power generation drilling rod.
A kind of generating power downhole drilling rod, including lithium battery, power generation drilling rod and common drilling rod, silk between lithium battery and power generation drilling rod
Screwed connection between button connection, power generation drilling rod and common drilling rod；
The power generation drilling rod is made of outer tube, thermo-electric generation element, inner tube, upper communication conductive wire and lower communication conductive wire, temperature
The axial direction in gap of the poor generating element between inner tube and outer tube and circumferential evenly distributed, series connection or simultaneously between each thermo-electric generation element
Connection or serial-parallel mirror, the upper and lower side of thermo-electric generation element are connect with upper communication conductive wire and lower communication conductive wire respectively；Generate electricity drilling rod
Power supply is connect with lithium battery, and power generation drilling rod is powered to lithium battery power supply, lithium battery to downhole hardware.
The power generation drilling rod is aluminium drill pipe, can high temperature resistant and light-weight；The common drilling rod is drill steel, by force
Degree is big.
The power generation drilling rod can the more extensions that are connected；The common drilling rod can the more extensions that are connected.
A kind of electricity-generating method of generating power downhole drilling rod, includes the following steps：
1) before, creeping into, required power generation drilling rod quantity is calculated according to downhole hardware unit interval electricity consumption and drilling depth,
And the quantity is multiplied by amplification coefficient 1.2 as final power generation drilling rod quantity.
2) drill bit is connect with downhole hardware, lithium battery is connect with downhole hardware, lithium battery and first power generation are bored
Bar connects, and decentralization power generation drilling rod starts to creep into work；Communication conductive wire between power generation drilling rod contacts with each other for being powered.Drilling well
The drill bit and the ground return table from annular gap that liquid is pumped into bottom hole cooling hole bottom by drilling rod center.It is carried out with drilling, connects and send out by root
Electric drill bar.
3), heat exchange has occurred in the inner cyclic process of hole in drilling fluid between stratum, drilling rod, and then the drilling rod that generates electricity
Interior drilling fluid forms the temperature difference with drilling fluid in annular space.Within the scope of certain depth, the temperature difference up gradually rises with bottom hole, the bottom hole temperature difference
It it is 0 DEG C, when higher than bottom hole, the temperature difference is more than 0 DEG C, and the thermo-electric generation element for the drilling rod that generates electricity at this time starts to generate electricity, and apart from bottom hole
Remoter, generated energy increases, and electric energy is transmitted to lithium battery through communication conductive wire.When the electricity production of unit interval is more than the list of downhole hardware
When the time electricity consumption of position, downhole hardware is started to work, and extra electricity is stored in lithium battery, is used for Emergency use.
4), after by under required power generation drilling rod whole in discharge hole, first common drilling rod and the power generation of last root are bored
Bar is connected, and is connected later by root between common drilling rod, continues to creep into work.
Beneficial effects of the present invention：
The temperature difference in power generation drilling rod and in annular gap between drilling fluid is utilized in drilling well and generates electricity, and then is filled for underground
Offer electric energy is provided.Compared to traditional lithium battery, turbine generation mechanism and wire cable drilling rod, it is effectively improved the stabilization of work
Property, drilling efficiency, and can realize core-drilling, it is simple in structure, do not change conventional drilling operations mode.
Description of the drawings
Fig. 1 is the generating power downhole drilling rod schematic diagram and electricity-generating method schematic diagram of the present invention.
Fig. 2 is the power generation drilling rod cross-sectional view of the present invention.
Fig. 3 is the power generation drilling rod longitudinal section of the present invention.
Wherein, 1-lithium battery；2-power generation drilling rods；3-common drilling rods；21-power generation drilling rod outer tubes；22-thermo-electric generations
Element；23-power generation drilling rod inner tubes；24-upper communication conductive wires；25-lower communication conductive wires.
Specific implementation mode
As shown in Figure 1 and Figure 2 and Figure 3, a kind of generating power downhole drilling rod, including lithium battery 1, power generation drilling rod 2 and common drilling rod
3, screwed connection between screwed connection, power generation drilling rod 2 and common drilling rod 3 between lithium battery 1 and power generation drilling rod 2；
The power generation drilling rod 2 is connected to under and is led by outer tube 21, thermo-electric generation element 22, inner tube 23, upper communication conductive wire 24
Line 25 forms, the axial direction in gap of the thermo-electric generation element 22 between inner tube 23 and outer tube 21 and circumferential evenly distributed, each temperature difference hair
Serial or parallel connection or serial-parallel mirror between electric device 22, the upper and lower side of thermo-electric generation element 22 respectively with upper communication conductive wire 24 and under
Communication conductive wire 25 connects；The power supply of power generation drilling rod 2 is electrically connected with lithium battery 1, and power generation drilling rod 2 is powered to lithium battery 1, lithium battery 1
It powers to downhole hardware 4.
The power generation drilling rod 2 is aluminium drill pipe, can high temperature resistant and light-weight；The common drilling rod 3 is drill steel,
Intensity is big.
The power generation drilling rod 2 can the more extensions that are connected；The common drilling rod 3 can the more extensions that are connected.
A kind of electricity-generating method of generating power downhole drilling rod, includes the following steps：
1) before, creeping into, required power generation drilling rod 2 is calculated according to 4 unit interval of downhole hardware electricity consumption and drilling depth and is counted
Amount, and the quantity is multiplied by amplification coefficient 1.2 as final 2 quantity of power generation drilling rod.
2) drill bit 5 is connect with downhole hardware 4, lithium battery 1 is connect with downhole hardware 4, by lithium battery 1 and first
The drilling rod 2 that generates electricity connects, and decentralization power generation drilling rod 2 starts to creep into work；Communication conductive wire between power generation drilling rod 2, which contacts with each other, to be used for
It is powered.The drill bit and the ground return table from annular gap that drilling fluid is pumped into bottom hole cooling hole bottom by drilling rod center.It is carried out with drilling, by
Root connection power generation drilling rod 2.
3), heat exchange has occurred in the inner cyclic process of hole in drilling fluid between stratum, drilling rod, and then the drilling rod 2 that generates electricity
Interior drilling fluid forms the temperature difference with drilling fluid in annular space.Within the scope of certain depth, the temperature difference up gradually rises with bottom hole, the bottom hole temperature difference
It it is 0 DEG C, when higher than bottom hole, the temperature difference is more than 0 DEG C, and the thermo-electric generation element 22 for the drilling rod 2 that generates electricity at this time starts to generate electricity, and apart from hole
Bottom is remoter, and generated energy increases, and electric energy is transmitted to lithium battery 1 through communication conductive wire.When the electricity production of unit interval is more than downhole hardware 4
Unit interval electricity consumption when, downhole hardware 4 is started to work, and extra electricity is stored in lithium battery 1, is used for Emergency use.
4) after, under required power generation drilling rod 2 is whole in discharge holes, first common drilling rod 3 and last root are generated electricity
Drilling rod 2 is connected, and is connected later by root between common drilling rod 3, continues to creep into work.
The present invention is utilized in drilling well the temperature difference in power generation drilling rod 2 and in annular gap between drilling fluid and is generated electricity, in turn
Electric energy is provided for downhole hardware 4.Compared to traditional lithium battery, turbine generation mechanism and wire cable drilling rod, it is effectively improved
The stability of work, drilling efficiency, and can realize core-drilling, it is simple in structure, do not change conventional drilling operations mode.
Claims (3)
1. a kind of generating power downhole drilling rod, it is characterised in that：Including lithium battery (1), power generation drilling rod (2) and common drilling rod (3), lithium electricity
Screwed connection between screwed connection, power generation drilling rod (2) and common drilling rod (3) between pond (1) and power generation drilling rod (2)；
The power generation drilling rod (2) by outer tube (21), thermo-electric generation element (22), inner tube (23), upper communication conductive wire (24) and under
Communication conductive wire (25) forms, and the axial direction and circumferential direction in gap of the thermo-electric generation element (22) between inner tube (23) and outer tube (21) are uniformly
It arranges, serial or parallel connection or serial-parallel mirror between each thermo-electric generation element (22), the upper and lower side difference of thermo-electric generation element (22)
It is connect with upper communication conductive wire (24) and lower communication conductive wire (25)；The power supply of power generation drilling rod (2) is electrically connected with lithium battery (1), is generated electricity
Drilling rod (2) is powered to lithium battery (1), and lithium battery (1) is powered to downhole hardware (4).
2. a kind of generating power downhole drilling rod according to claim 1, it is characterised in that：The power generation drilling rod (2) closes for aluminium
Golden drilling rod；The common drilling rod (3) is drill steel.
3. the electricity-generating method of generating power downhole drilling rod described in claim 1, this approach includes the following steps：
1) before, creeping into, required power generation drilling rod (2) number is calculated according to downhole hardware (4) unit interval electricity consumption and drilling depth
Amount, and the quantity is multiplied by amplification coefficient 1.2 as final power generation drilling rod (2) quantity；
2) drill bit (5) is connect with downhole hardware (4), lithium battery (1) is connect with downhole hardware (4), by lithium battery (1) with
First power generation drilling rod (2) connection, decentralization power generation drilling rod (2) start to creep into work；Communication conductive wire between power generation drilling rod (2)
It contacts with each other for being powered；The drill bit and the ground return table from annular gap that drilling fluid is pumped into bottom hole cooling hole bottom by drilling rod center；
It is carried out with drilling, power generation drilling rod (2) is connected by root；
3), in the inner cyclic process of hole heat exchange has occurred, and then generate electricity in drilling rod (2) in drilling fluid between stratum, drilling rod
Drilling fluid forms the temperature difference with drilling fluid in annular space；Within the scope of certain depth, the temperature difference up gradually rises with bottom hole, and the bottom hole temperature difference is
0 DEG C, when higher than bottom hole, the temperature difference is more than 0 DEG C, and the thermo-electric generation element (22) for the drilling rod (2) that generates electricity at this time starts to generate electricity, and distance
Bottom hole is remoter, and generated energy increases, and electric energy is transmitted to lithium battery (1) through communication conductive wire；When the electricity production of unit interval is more than underground
When the unit interval electricity consumption of device (4), downhole hardware (4) is started to work, and extra electricity is stored in lithium battery (1), is used
In Emergency use；
4), after by required power generation drilling rod (2), all lower discharge hole is interior, first common drilling rod (3) and last root are generated electricity
Drilling rod (2) is connected, and is connected later by root between common drilling rod (3), continues to creep into work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810330826.2A CN108425637A (en) | 2018-04-13 | 2018-04-13 | A kind of generating power downhole drilling rod and its electricity-generating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810330826.2A CN108425637A (en) | 2018-04-13 | 2018-04-13 | A kind of generating power downhole drilling rod and its electricity-generating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108425637A true CN108425637A (en) | 2018-08-21 |
Family
ID=63160905
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810330826.2A Pending CN108425637A (en) | 2018-04-13 | 2018-04-13 | A kind of generating power downhole drilling rod and its electricity-generating method |
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| Country | Link |
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| CN (1) | CN108425637A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441379A (en) * | 2018-10-23 | 2019-03-08 | 中国石油集团渤海钻探工程有限公司 | High temperature mud pressure cooling system |
| CN110021988A (en) * | 2019-04-28 | 2019-07-16 | 中国石油集团渤海钻探工程有限公司 | Thermal type thermoelectricity down-hole power |
| CN114382433A (en) * | 2022-01-26 | 2022-04-22 | 陈跃 | Natural gas wellhead integrated device and system based on depressurization, dehydration and power generation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114382433A (en) * | 2022-01-26 | 2022-04-22 | 陈跃 | Natural gas wellhead integrated device and system based on depressurization, dehydration and power generation |
| CN114382433B (en) * | 2022-01-26 | 2023-09-15 | 陈跃 | Natural gas wellhead integrated device based on depressurization, dehydration and power generation |
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Application publication date: 20180821 |