CN105604509A - Electric submersible pump pipe string for optical fiber monitoring of horizontal well - Google Patents

Electric submersible pump pipe string for optical fiber monitoring of horizontal well Download PDF

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Publication number
CN105604509A
CN105604509A CN201610121467.0A CN201610121467A CN105604509A CN 105604509 A CN105604509 A CN 105604509A CN 201610121467 A CN201610121467 A CN 201610121467A CN 105604509 A CN105604509 A CN 105604509A
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CN
China
Prior art keywords
submersible pump
electric submersible
pipe
oil pipe
optical fiber
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.)
Pending
Application number
CN201610121467.0A
Other languages
Chinese (zh)
Inventor
张俊斌
饶志华
卢有军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Offshore Oil Corp CNOOC
CNOOC China Ltd Shenzhen Branch
Original Assignee
China National Offshore Oil Corp CNOOC
CNOOC China Ltd Shenzhen Branch
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China National Offshore Oil Corp CNOOC, CNOOC China Ltd Shenzhen Branch filed Critical China National Offshore Oil Corp CNOOC
Priority to CN201610121467.0A priority Critical patent/CN105604509A/en
Publication of CN105604509A publication Critical patent/CN105604509A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/01Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E21B47/017Protecting measuring instruments
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/06Measuring temperature or pressure
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/12Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
    • E21B47/135Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency using light waves, e.g. infrared or ultraviolet waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses an electric submersible pump pipe string for optical fiber monitoring of a horizontal well. The electric submersible pump pipe string comprises a bushing, an optical fiber, a first oil pipe, an electric submersible pump seal unit and a second oil pipe, and the first oil pipe, the electric submersible pump seal unit and the second oil pipe are sequentially and axially arranged in the bushing. The electric submersible pump seal unit comprises an electric submersible pump set and a sleeve, and the sleeve externally sleeves the electric submersible pump set which is connected to the end of the first oil pipe. A first end of the sleeve is connected to the outer periphery of the first oil pipe, and the second oil pipe is connected with a second end of the sleeve. The optical fiber extends along the first oil pipe, the electric submersible pump seal unit and the second oil pipe towards the interior of the sleeve. The electric submersible pump pipe string for optical fiber monitoring of the horizontal well has the advantages that the submersible pump set and the sleeve are matched to form the submersible pump seal unit, and the technical problem of difficulty in underground descending of an optical fiber monitoring system with an electric submersible pump is solved; quickness and safety in assembly are achieved, the optical fiber sent to the bottom of the well is unlimited by well depth and tensile strength of pipe columns, and a powerful basis is provided for precision oil stabilization and water control measures.

Description

For the electric submersible pump pipe string of horizontal well fiber-optic monitoring
Technical field
The present invention relates to technical field of petroleum extraction, relate in particular to a kind of electricity for horizontal well fiber-optic monitoringLatent pump line string.
Background technology
Offshore oilfield (oil well) generally adopts horizontal well development, and well depth generally all exceedes 2000m. Due to seaThe particularity of ocean oil mining, need to be lowered to electric submersible pump and realize artificial lift oil recovery. Oil well is conventional to be producedTubing string bottommost is electric submersible pump unit, and depth of setting is generally in 1000m left and right. Due to electric submersible pump unitParticularity, in general electric submersible pump unit bottom is maximum can carry the load that is no more than 1T, thereby cannot connectThe oil pipe that connects 2-7/8 〞 or other sizes comes delivery optical fiber monitoring system or other instruments to shaft bottom.
Oil well relatively, gas well is produced without artificial lift measure, and flow string structure is relatively simple,In gas well, realize that to be lowered to the downhole tools such as optic-fiber monitoring system relatively simple, easily, and also have at present shouldWith precedent, but do not have the precedent of horizontal well application.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of improved for horizontal well fiber-optic monitoringElectric submersible pump pipe string.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of for horizontal well optical fiberThe electric submersible pump pipe string of monitoring, comprises sleeve pipe, optical fiber, along described in being axially successively set on of described sleeve pipeThe first oil pipe, electric submersible pump closed cells and the second oil pipe in sleeve pipe; Described electric submersible pump closed cells bagDraw together and be connected to the electric submersible pump unit on described the first oil pipe end and be set in outside described electric submersible pump unitSleeve;
The first end of described sleeve is connected in the periphery of described the first oil pipe, and described the second oil pipe connects instituteState the second end of sleeve; Described optical fiber is along described the first oil pipe, electric submersible pump closed cells and the second oilPipe extends in described sleeve pipe.
Preferably, on the second end of described sleeve, be connected to for well liquid by entering the perforated pipe in described sleeve.
Preferably, the second end of described sleeve comprises conical section, described conical section with its diameter larger oneEnd is connected with the first end of described sleeve, described perforated pipe be connected to the diameter of described conical section less oneOn end.
Preferably, described the second oil pipe is connected by blind button with the second end of described sleeve.
Preferably, this electric submersible pump pipe string also comprises several fiber optic protection devices; Between several described fiber optic protection devicesEvery distribution, and be set between described optical fiber and described electric submersible pump closed cells.
Preferably, described the first oil pipe is the oil pipe that size is different with the second oil pipe.
Preferably, described the first oil pipe is positioned at by cable-passing packer on the central axis of described sleeve pipe;
And, on described the first oil pipe, safety valve being housed, described safety valve connects ground by controlling pipelineEquipment.
Preferably, described electric submersible pump unit connects surface power supply equipment by cable; Described cable one end connectsConnect described electric submersible pump unit, the other end pass described sleeve, along described sleeve pipe earthward direction extend.
Preferably, this electric submersible pump pipe string also comprises sand control screen; Described sand control screen is by blind pipe and packingDevice is connected with described sleeve pipe.
Preferably, described the second oil pipe is also provided with optical fiber pressure away from the end of described electric submersible pump closed cellsMeter, described optical fiber is connected with described Optical fiber pressure manomete; Described Optical fiber pressure manomete is positioned at described sand control screen.
Electric submersible pump pipe string for horizontal well fiber-optic monitoring of the present invention, electric submersible pump unit coordinates shape with sleeveBecome electric submersible pump closed cells, solved electric immersible pump well and be lowered to the technical barrier of optic-fiber monitoring system; Assembling is fastPrompt safety, optical fiber is not limited by well depth, tubing string tensile strength down to shaft bottom, for steady oil control water is accurately arrangedExecute strong foundation is provided.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is that the electric submersible pump pipe string for horizontal well fiber-optic monitoring of one embodiment of the invention is lowered to horizontal wellIn structural representation;
Fig. 2 is the side structure schematic diagram of fiber optic protection device in the present invention;
Fig. 3 is the structural representation of the device of fiber optic protection shown in Fig. 2 on electric submersible pump closed cells and optical fiber.
Detailed description of the invention
Understand for technical characterictic of the present invention, object and effect being had more clearly, now contrast accompanying drawingDescribe the specific embodiment of the present invention in detail.
As shown in Figure 1, the electric submersible pump pipe string for horizontal well fiber-optic monitoring of one embodiment of the invention, bagDraw together sleeve pipe 1, optical fiber 2, be axially successively set on the first oil pipe 3, the electricity in sleeve pipe 1 along sleeve pipe 1The pump closed cells 4 of diving and the second oil pipe 5. Wherein, electric submersible pump closed cells 4 comprises and is connected to the first oilManage the electric submersible pump unit 41 on 3 ends and be set in the sleeve 42 outside electric submersible pump unit 41; Sleeve42 seal electric submersible pump unit 41,41 maximum loads that can carry of raising electric submersible pump unit (asBe greater than 1T), the oil pipe that can connect 2-7/8 〞 or other sizes comes delivery optical fiber monitoring system or otherInstrument is to shaft bottom.
Particularly, the first oil pipe 3 is positioned on the central axis of sleeve pipe 1 by cable-passing packer 11.And, on the first oil pipe 3, safety valve 31 being housed, safety valve 31 connects ground by control pipeline 32 and establishesStandby.
On the first oil pipe 3, be also provided with sliding sleeve 33 and seating nipple 34. Sliding sleeve 33 is at well workover lift pipe stringFront lower steel wire TO sliding sleeve, sets up the inside and outside UNICOM of oil pipe, and kill-job can circulate; Seating nipple 34 is to useIn being located steel wire plug, this plug is transferred to seating nipple position and is formed sealing by steel wire, byIn oil pipe, suppress, set cable packer 11.
Optical fiber 2 prolongs in sleeve pipe 1 along the first oil pipe 3, electric submersible pump closed cells 4 and the second oil pipe 5Stretch. Optical fiber 2 stretches in horizontal well, can connect the Optical fiber pressure manomete that is positioned at horizontal well, carries out signal biographyDefeated. For fear of optical fiber 2 extrusions, this electric submersible pump pipe string also comprises several fiber optic protection devices 12,As shown in Figure 2. Several fiber optic protection devices 12 are spaced apart, and are set in optical fiber 2 and the airtight list of electric submersible pumpBetween unit 4. Wherein, the spacing distance between fiber optic protection device 12 can be 3m left and right.
As shown in Figure 2,3, this fiber optic protection device 12 can comprise the docking section 121 of two semicircles or arcuation,These two docking sections 121 cooperatively interact and are connected to form the fiber optic protection device 12 of overall ring-type. Docking section 121Medial surface be provided with the groove 122 of corresponding optical fiber 2 shapes, wherein accommodating for optical fiber 2. When assembling, by recessedGroove 122 is aimed at optical fiber 2, two docking section 121 covers is set to sleeve 42 peripheries of electric submersible pump closed cells 4Rear docking is got up, and 2 of optical fiber are positioned in groove 122, thereby it is airtight that optical fiber 2 is positioned to electric submersible pumpOutside unit 4, prevent optical fiber 2 extrusions.
In addition, between optical fiber 2 and the first oil pipe 3 and between optical fiber 2 and the second oil pipe 5, alsoFiber optic protection device can be set, this fiber optic protection device can with above-mentioned electric submersible pump closed cells 4 outside fiber optic protectionDevice 12 structures are identical, also can be different. By the setting of above-mentioned fiber optic protection device, optical fiber 2 is positioned toOne oil pipe 3, electric submersible pump closed cells 4 and the second oil pipe 5 sides. At the first oil pipe 3, the airtight list of electric submersible pumpWhen unit 4 and the second oil pipe 5 are lowered in horizontal well, drive optical fiber 2 to be lowered to smoothly in horizontal well.
Sleeve pipe 1 can, by selecting 9-5/8 〞 pound level sleeve pipe, increase optical fiber 2 free gaps.
In electric submersible pump closed cells 4, electric submersible pump unit 41 is sealed by sleeve 42, improves electricity and dives41 maximum loads that can carry of pump assembly, make it can be in horizontal well more than degree of depth 3000m.
Electric submersible pump unit 41 connects surface power supply equipment by cable 44. These cable 44 one end connect electricity and divePump assembly 41, the other end, by cable-passing packer 11, passes sleeve 42, square earthward along sleeve pipe 1To extension.
Sleeve 42 can comprise the first end and the second end that are connected. First end be connected to the first oil pipe 3 outsideZhou Shang, the second end of 5 branch sleeves 42 of the second oil pipe. On the second end of sleeve 42, be also connected to punchingPipe 43, for well liquid by after enter in sleeve 42. The hole 431 of well liquid from perforated pipe 43 enters wherein,Again from the interior inflow sleeve 42 of perforated pipe 43.
Further, in the present embodiment, the second end of sleeve 42 comprises conical section 421, conical section 421One end larger with its diameter is connected with the first end of sleeve 42, and perforated pipe 43 is connected to conical section 421The less one end of diameter on.
The second oil pipe 5 is flexible pipe, and it is flexible to extend in the horizontal segment of horizontal well.
The first oil pipe 3 is the oil pipe that size is different with the second oil pipe 5. For example, the first oil pipe 3 can be butBe not limited to 5-1/2 〞 oil pipe; The second oil pipe 5 can be but is not limited to 2-7/8 〞 oil pipe.
Preferably, the second oil pipe 5 is buckled 51 and is connected with the second end of sleeve 42 by blind, attended operation letterJust and bonding strength reliable. Particularly, in the present embodiment, the second oil pipe 5 passes through the blind 51 connection punchings of buckleingPipe 43.
Further, this electric submersible pump pipe string also comprises sand control screen 6. Sand control screen 6 is by blind pipe 7 and envelopeBe connected with sleeve pipe 1 every device 8. The second oil pipe 5 extend into sand control away from the end of electric submersible pump closed cells 4In screen casing 6.
In addition, the second oil pipe 5 is also provided with Optical fiber pressure manomete 9, light away from the end of electric submersible pump closed cells 4Fine pressure gauge 9 is positioned at sand control screen 6. Optical fiber 2 is connected with Optical fiber pressure manomete 9, to carry out signal biographyDefeated. Optical fiber pressure manomete 9 can be fixed on the second oil pipe 5 by holder cylinder.
This electric submersible pump pipe string further comprises the guide shoe 10 being arranged on sand control screen 6 free terminals,For guiding the second oil pipe 5 and sand control screen 6 successfully to enter in the horizontal segment of horizontal well. Guide shoe 10Outer face be arc surface.
In sum, electric submersible pump pipe string of the present invention, can drive optical fiber to be lowered in horizontal well smoothly, therebyCan realize optic-fiber monitoring system and be lowered to horizontal well, thereby be convenient to the quantitative analysis means quantitative interpretation by scienceThe oil gas water condition of production of each point of horizontal segment in producing well life cycle, analyzes profit and produces variation ruleRule, thus for water blockoff measure targetedly provides direct basis, improve the oil and gas production of individual well, and being also willCarry out steady oil control water measure accurately strong foundation is provided.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, everyUtilize equivalent structure or the conversion of equivalent flow process that description of the present invention and accompanying drawing content do, or directly orConnect and be used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (10)

1. the electric submersible pump pipe string for horizontal well fiber-optic monitoring, it is characterized in that, comprise sleeve pipe (2), optical fiber (2), be axially successively set on the first oil pipe (3), electric submersible pump closed cells (4) and the second oil pipe (5) in described sleeve pipe (1) along described sleeve pipe (1); Described electric submersible pump closed cells (4) comprises and is connected to the electric submersible pump unit (41) on described the first oil pipe (3) end and is set in the outer sleeve (42) of described electric submersible pump unit (41);
The first end of described sleeve (42) is connected in the periphery of described the first oil pipe (3), and described the second oil pipe (5) connects the second end of described sleeve (42); Described optical fiber (2) is interior extension along described the first oil pipe (3), electric submersible pump closed cells (4) and the second oil pipe (5) to described sleeve pipe (1).
2. the electric submersible pump pipe string for horizontal well fiber-optic monitoring according to claim 1, is characterized in that, is connected with for well liquid by entering the perforated pipe (43) in described sleeve (42) on the second end of described sleeve (42).
3. the electric submersible pump pipe string for horizontal well fiber-optic monitoring according to claim 2, it is characterized in that, the second end of described sleeve (42) comprises conical section (421), described conical section is connected with the first end of described sleeve (42) with the larger one end of its diameter, and described perforated pipe (43) is connected on one end that the diameter of described conical section (421) is less.
4. the electric submersible pump pipe string for horizontal well fiber-optic monitoring according to claim 1, is characterized in that, described the second oil pipe (5) is connected with the second end of described sleeve (42) by blind button (51).
5. the electric submersible pump pipe string for horizontal well fiber-optic monitoring according to claim 1, is characterized in that, this electric submersible pump pipe string also comprises several fiber optic protection devices (12); Several described fiber optic protection devices (12) are spaced apart, and are set between described optical fiber (2) and described electric submersible pump closed cells (4).
6. the electric submersible pump pipe string for horizontal well fiber-optic monitoring according to claim 1, is characterized in that, described the first oil pipe (3) is the oil pipe that size is different with the second oil pipe (5).
7. according to the electric submersible pump pipe string for horizontal well fiber-optic monitoring described in claim 1-6 any one, it is characterized in that, described the first oil pipe (3) is positioned on the central axis of described sleeve pipe (1) by cable-passing packer (11);
And, safety valve (31) is housed on described the first oil pipe (3), described safety valve (31) connects ground installation by controlling pipeline (32).
8. according to the electric submersible pump pipe string for horizontal well fiber-optic monitoring described in claim 1-6 any one, it is characterized in that, described electric submersible pump unit (41) connects surface power supply equipment by cable (44); Described cable (44) one end connects described electric submersible pump unit (41), the other end pass described sleeve (42), along described sleeve pipe (1) earthward direction extend.
9. according to the electric submersible pump pipe string for horizontal well fiber-optic monitoring described in claim 1-6 any one, it is characterized in that, this electric submersible pump pipe string also comprises sand control screen (6); Described sand control screen (6) is connected with described sleeve pipe (1) with packer (8) by blind pipe (7).
10. the electric submersible pump pipe string for horizontal well fiber-optic monitoring according to claim 9, it is characterized in that, described the second oil pipe (5) is also provided with Optical fiber pressure manomete (10) away from the end of described electric submersible pump closed cells (4), and described optical fiber (2) is connected with described Optical fiber pressure manomete (10); Described Optical fiber pressure manomete (10) is positioned at described sand control screen (6).
CN201610121467.0A 2016-03-03 2016-03-03 Electric submersible pump pipe string for optical fiber monitoring of horizontal well Pending CN105604509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610121467.0A CN105604509A (en) 2016-03-03 2016-03-03 Electric submersible pump pipe string for optical fiber monitoring of horizontal well

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Application Number Priority Date Filing Date Title
CN201610121467.0A CN105604509A (en) 2016-03-03 2016-03-03 Electric submersible pump pipe string for optical fiber monitoring of horizontal well

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110761775A (en) * 2019-11-22 2020-02-07 中国石油大学胜利学院 Oil reservoir information collecting device of oil production well in production
CN110863823A (en) * 2019-11-22 2020-03-06 中国石油大学胜利学院 Oil reservoir information collection method for oil production well in production
CN113756785A (en) * 2021-10-21 2021-12-07 国兴汇金(深圳)科技有限公司 Optical fiber logging device for horizontal well layered completion and well descending method

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110761775A (en) * 2019-11-22 2020-02-07 中国石油大学胜利学院 Oil reservoir information collecting device of oil production well in production
CN110863823A (en) * 2019-11-22 2020-03-06 中国石油大学胜利学院 Oil reservoir information collection method for oil production well in production
CN110863823B (en) * 2019-11-22 2023-09-12 扬州川石石油机械科技有限责任公司 Oil reservoir information collection method of oil extraction well in production
CN113756785A (en) * 2021-10-21 2021-12-07 国兴汇金(深圳)科技有限公司 Optical fiber logging device for horizontal well layered completion and well descending method

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Application publication date: 20160525

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