CN104234690A - Grating optical fiber corrosion monitoring sensor - Google Patents

Grating optical fiber corrosion monitoring sensor Download PDF

Info

Publication number
CN104234690A
CN104234690A CN201410328158.1A CN201410328158A CN104234690A CN 104234690 A CN104234690 A CN 104234690A CN 201410328158 A CN201410328158 A CN 201410328158A CN 104234690 A CN104234690 A CN 104234690A
Authority
CN
China
Prior art keywords
corrosion
optical fiber
grating optical
monitoring sensor
nut
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
CN201410328158.1A
Other languages
Chinese (zh)
Inventor
周万富
张永平
朱振锐
马文海
翟庆红
马品刚
李楠
贺海军
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.)
Petrochina Co Ltd
Daqing Oilfield Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
Daqing Oilfield Co Ltd
China Petroleum and Natural Gas Co Ltd
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 Daqing Oilfield Co Ltd, China Petroleum and Natural Gas Co Ltd filed Critical Daqing Oilfield Co Ltd
Priority to CN201410328158.1A priority Critical patent/CN104234690A/en
Publication of CN104234690A publication Critical patent/CN104234690A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a grating optical fiber corrosion monitoring sensor and relates to the technical field of oilfield oil and gas production. The grating optical fiber corrosion monitoring sensor belongs to an underground corrosion rate monitoring instrument. The invention solves the problem that the corrosion situation of casings, tubings and sucker rods of oil-water wells cannot be monitored during oilfield development. The grating optical fiber corrosion monitoring sensor consists of an adapter 1, a fiber holding pipe section 2, nuts 3, pipe plugs 4, a protection sleeve 5, a corrosion sample piece 6, a grating optical fiber 7, double nuts 8, tie rods 9 and a spring 10, wherein the adapter 1 is in threaded connection with the fiber holding pipe section 2, the pipe plug 4 is in threaded connection with the fiber holding pipe section 2 and the protection sleeve 5, the pipe plug 4 is connected with the tie rod 9 through the nut 3, and the corrosion sample piece 6 is connected with the tie rod 9 through the nut 3. The grating optical fiber corrosion monitoring sensor is mainly used for corrosion monitoring of oilfield injection and production wells, and has the advantages of simple operation and accurate monitoring result.

Description

Grating fibers corrosion monitoring sensor
Technical field: the present invention relates to oil extraction in oil field production gas technology field, belongs to a kind of downhole corrosion rate monitor device.
Background technology: along with oilfield exploitation is to the middle and later periods, casing corrosion problem is more and more outstanding, particularly implement the oil reservoir of the exploitations such as water filling gas injection, due to different geology, engineering and management condition, oil, gas, well sleeve technology situation will be deteriorated gradually, even damage, oil well normally can not be produced, so that affect oilfield stable production.Casing damaged well also can cause the serious consequence such as injection and extraction system imperfection, production decline quickening, and indirect loss is larger.Therefore, it is very necessary for monitoring the casing corrosion of oil-water well in oilfield development process, carry out casing monitoring not only to contribute to finding out casing corrosion degree, and pre-alarm can be carried out to the environment of down-hole casing corrosion and generation and accelerated corrosion, be conducive to adopting remedial measures, extend Service Life of Casing, extend the oil-water well exploitation time limit.Domestic existing monitoring method due to its monitoring periods long, the features such as monitoring condition is harsh cannot meet on-the-spot actual needs.
Summary of the invention: the object of the invention is development one and can grasp in time and drive injection-production well corrosion condition, reply injection-production well carries out evaluating and takes effective safeguard procedures, to the grating fibers corrosion monitoring sensor driving the sleeve pipe of injection-production well, oil pipe, sucker rod carry out corrosion monitoring.
Technical scheme of the present invention is: it by adapter, hold fine pipeline section, nut, pipe plug, protective casing, corrosion print, grating fibers, double nut, pull bar and spring and form; Wherein adapter is screwed connection with holding fine pipeline section; nut and pull bar are screwed connection; pipe plug is screwed connection with the fine pipeline section of appearance, protective casing; pipe plug and pull bar are that nut is connected; corrosion print is that double nut is connected with pull bar; place spring between pipe plug and pull bar, grating fibers sticks with glue with corrosion print and connects.Protective casing has inlet opening.
Compared with the prior art the present invention has following beneficial effect:
1) instrument size is little, and maximum outside diameter is Φ 22mm;
2) applied range, does not affect by surrounding medium;
3) measurement category is very wide, minimumly can measure 0.005mm/a, the highlyest can measure 10mm/a.
Accompanying drawing illustrates: Fig. 1 is structural representation of the present invention; Fig. 2 is site operation schematic diagram of the present invention.
Detailed description of the invention: the present invention is further described below in conjunction with accompanying drawing, it by adapter 1, hold fine pipeline section 2, nut 3, pipe plug 4, protective casing 5, corrosion print 6, grating fibers 7, double nut 8, pull bar 9 and spring 10 form; Wherein adapter 1 is screwed connection with holding fine pipeline section 2; nut 3 and pull bar 9 are screwed connection; pipe plug 4 is screwed connection with the fine pipeline section 2 of appearance, protective casing 5; pipe plug 4 is connected for nut 3 with pull bar 9; corrosion print 6 is connected for double nut 8 with pull bar 9; spring 10 is placed, grating fibers 7 and corrosion print 6 company of sticking with glue between pipe plug 4 and pull bar 9.
Protective casing 5 has inlet opening, corrodes print and be placed in corrosive environment when ensureing monitoring.
During site operation, the present invention 11 is connected with winch 14 by steel wire 13, first on ground, the present invention 11 is demarcated by demodulator, demarcate steel wire 13 that is rear and winch to connect, and the precalculated position by winch 14 the present invention 11 is lowered in oil jacket annular space 12, the present invention need stop more than 4 hours, after reaching the time in precalculated position, the present invention 11 is tripped out by winch 14.The corrosion print 6 of the present invention 11 contacts with corrosive environment in oil jacket annular space, because corrosion occurs thinning, and the minimal stress produced passes on grating fibers 7, and grating fibers 7 can because the effect of thermo-optic effect, elasto-optical effect, Faraday effect etc. causes Prague centre wavelength to be drifted about, after separating mediation inverting, finally draw the corrosion rate of corrosive environment to oil bushing steel.

Claims (2)

1. grating fibers corrosion monitoring sensor, is characterized in that: it by adapter (1), hold fine pipeline section (2), nut (3), pipe plug (4), protective casing (5), corrosion print (6), grating fibers (7), double nut (8), pull bar (9) and spring (10) form; Wherein adapter (1) is screwed connection with holding fine pipeline section (2); nut (3) and pull bar (8) are screwed connection; pipe plug (4) is screwed connection with the fine pipeline section of appearance (2), protective casing (5); pipe plug (4) with pull bar (9) for nut (3) is connected; corrode print (6) with pull bar (9) for double nut (8) is connected; spring (10) is placed, grating fibers (7) and corrosion print (6) company of sticking with glue between pipe plug (4) and pull bar (9).
2. grating fibers corrosion monitoring sensor according to claim 1, is characterized in that: protective casing (5) has inlet opening.
CN201410328158.1A 2014-07-04 2014-07-04 Grating optical fiber corrosion monitoring sensor Pending CN104234690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410328158.1A CN104234690A (en) 2014-07-04 2014-07-04 Grating optical fiber corrosion monitoring sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410328158.1A CN104234690A (en) 2014-07-04 2014-07-04 Grating optical fiber corrosion monitoring sensor

Publications (1)

Publication Number Publication Date
CN104234690A true CN104234690A (en) 2014-12-24

Family

ID=52223496

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410328158.1A Pending CN104234690A (en) 2014-07-04 2014-07-04 Grating optical fiber corrosion monitoring sensor

Country Status (1)

Country Link
CN (1) CN104234690A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105587306A (en) * 2015-12-18 2016-05-18 中国石油天然气股份有限公司 Method capable of monitoring stress of pipe column of injection and production well of gas storage

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501323A (en) * 1982-12-27 1985-02-26 Hughes Tool Company Method and apparatus for monitoring the corrosive effects of well fluids
US5095977A (en) * 1990-04-10 1992-03-17 Ford Michael B Coupon holder for corrosion test downhole in a borehole
CN201202466Y (en) * 2008-06-30 2009-03-04 大庆油田有限责任公司 Suspension type corrosion monitoring apparatus of gas well downhole oil conduit
CN201568043U (en) * 2009-05-25 2010-09-01 陕西延长石油(集团)有限责任公司研究院 Underground multifunctional corrosion rate detection device
CN101865815A (en) * 2010-06-11 2010-10-20 武汉理工大学 Monitoring method and sensor thereof based on rust etching of grating metal plated with sensitive film
CN201673108U (en) * 2010-04-26 2010-12-15 中国石油天然气股份有限公司 Oil pipe corrosion test device
CN102445452A (en) * 2011-09-28 2012-05-09 沈阳建筑大学 Method for monitoring of steel bar corrosion in real time
CN202832486U (en) * 2012-09-18 2013-03-27 中国石油天然气股份有限公司 Hanging ring device of underground corrosion monitoring
US20130087328A1 (en) * 2011-10-05 2013-04-11 Halliburton Energy Services, Inc. Downhole Species Selective Optical Fiber Sensor Systems and Methods
CN203394505U (en) * 2013-07-31 2014-01-15 中国石油化工股份有限公司 Down-hole working condition corrosion and scaling speed tester
CN203559897U (en) * 2013-11-19 2014-04-23 中国石油化工股份有限公司 Underground hanging-piece corrosion test unit

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501323A (en) * 1982-12-27 1985-02-26 Hughes Tool Company Method and apparatus for monitoring the corrosive effects of well fluids
US5095977A (en) * 1990-04-10 1992-03-17 Ford Michael B Coupon holder for corrosion test downhole in a borehole
CN201202466Y (en) * 2008-06-30 2009-03-04 大庆油田有限责任公司 Suspension type corrosion monitoring apparatus of gas well downhole oil conduit
CN201568043U (en) * 2009-05-25 2010-09-01 陕西延长石油(集团)有限责任公司研究院 Underground multifunctional corrosion rate detection device
CN201673108U (en) * 2010-04-26 2010-12-15 中国石油天然气股份有限公司 Oil pipe corrosion test device
CN101865815A (en) * 2010-06-11 2010-10-20 武汉理工大学 Monitoring method and sensor thereof based on rust etching of grating metal plated with sensitive film
CN102445452A (en) * 2011-09-28 2012-05-09 沈阳建筑大学 Method for monitoring of steel bar corrosion in real time
US20130087328A1 (en) * 2011-10-05 2013-04-11 Halliburton Energy Services, Inc. Downhole Species Selective Optical Fiber Sensor Systems and Methods
CN202832486U (en) * 2012-09-18 2013-03-27 中国石油天然气股份有限公司 Hanging ring device of underground corrosion monitoring
CN203394505U (en) * 2013-07-31 2014-01-15 中国石油化工股份有限公司 Down-hole working condition corrosion and scaling speed tester
CN203559897U (en) * 2013-11-19 2014-04-23 中国石油化工股份有限公司 Underground hanging-piece corrosion test unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105587306A (en) * 2015-12-18 2016-05-18 中国石油天然气股份有限公司 Method capable of monitoring stress of pipe column of injection and production well of gas storage

Similar Documents

Publication Publication Date Title
CN105156095B (en) A kind of internally coated single electrode current type detection method of tube and casing in downhole
CN104533390B (en) A kind of coiled tubing underground load test instrument
CN104653221A (en) Coal mine gas drainage pipeline optical fiber monitoring system
CN203515558U (en) Deep-well water source well water level monitoring technological pipe column
CN104234690A (en) Grating optical fiber corrosion monitoring sensor
CN203175532U (en) Movable type acidic gas well underground corrosion monitoring device
CN102562043B (en) Device for underground detecting sand production of oil well
CN204113278U (en) A kind of gas storage test string
CN202065685U (en) Oil filed pipeline corrosion early warning system
CN202001000U (en) Optical fiber sensor for measuring downhole pressure
CN105239995B (en) A kind of internally coated three electrode potentials differential detection method of tube and casing in downhole
CN102562029B (en) Ultrasonic transducer is avoided to rotate method and the ultrasonic transducer fastening structure of installation
CN204831667U (en) Balanced push pipe water and soil pressure monitoring instrument protection device of muddy water under high water condition
CN204552808U (en) Mine gas drainage pipeline optic-fiber monitoring system
Svoma et al. Integrated condition monitoring for subsea power cable systems
CN203441469U (en) Flow meter for speed measurement based on optical fiber laser
CN203847098U (en) Underground temperature and pressure parameter measurement device
CN203685169U (en) Offshore pressure measurement system with capillary tube
CN201982084U (en) Improved device used for solving well head pressure measuring at well head
CN105114815A (en) Monitoring early-warning system for underground oil and gas pipeline
CN205968826U (en) LWD is instrument sealing joint puller in pit
CN204988574U (en) Composite construction's hollow inclusion taseometer
CN204283416U (en) Oil-water well cover external pressure on-line continuous monitoring sampling ground installation
CN104005754A (en) Horizontal open hole well diameter ultrasonic measuring instrument carried by pigging tubular column
CN201236696Y (en) External optical fiber sensor down-hole positioning device of oil water well casing tube

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20141224

WD01 Invention patent application deemed withdrawn after publication