CN104975847A - Oil gas cementing top cement plug position monitoring device and detection method thereof - Google Patents
Oil gas cementing top cement plug position monitoring device and detection method thereof Download PDFInfo
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- 239000004568 cement Substances 0.000 title claims abstract description 122
- 238000012806 monitoring device Methods 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 60
- 210000002445 nipple Anatomy 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 239000013307 optical fiber Substances 0.000 claims description 53
- 239000000835 fiber Substances 0.000 claims description 32
- 238000005553 drilling Methods 0.000 claims description 29
- 239000012530 fluid Substances 0.000 claims description 22
- 230000003628 erosive effect Effects 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 230000005693 optoelectronics Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 208000034656 Contusions Diseases 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000007405 data analysis Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The present invention discloses an oil gas cementing top cement plug position monitoring device. The oil gas cementing top cement plug position monitoring device comprises a vertically disposed sleeve (1), a coupling detection subsystem, a photoelectric information transmission subsystem and a top cement plug measurement, control and analysis subsystem, and also comprises a liquid injection valve (17), a vent valve (18), a high-pressure stop valve A (19) and a high-pressure stop valve B (20); the liquid injection valve (17), the vent valve (18) and the high-pressure stop valve A (19) are all communicated with a monitoring sleeve (7); and the high-pressure stop valve B (20) is communicated with a top cement plug pipe nipple (4). The oil gas cementing top cement plug position monitoring device has the beneficial effects that the device is safe in operation, compact in structure and reliable in information transmission, time and labor are both saved, measurement, control and data analysis results are reliable, and measurement accuracy is highly intelligent.
Description
Technical field
The technical field of top cement plug position monitoring when the present invention relates to oil gas cementing operation in well middle sleeve, particularly a kind of oil gas well cementation top cement plug position monitoring device and detection method thereof.
Background technology
Well cementing operation is the important component part of oil/gas drilling construction, and when the top cement plug purposes used in well cementing operation process is cementing, isolated water mud and drilling fluid, prevent from infiltrating drilling fluid in cement paste and affecting cementing quality.For a long time, in Oil/gas Well cementing practice process to the position judgment of top cement plug in well middle sleeve be calculate according to the cement paste discharge capacity of slush pump in well cementing operation and casing inner diameter and volume parameters after draw, but the factors such as the U-shaped tube effect caused due to the density contrast of cement paste and drilling fluid inside and outside the unstability of slush pump discharge capacity, sleeve pipe, sleeve pipe hole diameter are abnormal, cause the accurate well depth position of top cement plug to be difficult to know, the high-quality that have impact on cementing operation fine manipulation completes.
At present, the Casing Wiper Plugs of external Wei Zefu (Weathford) company, University of Petroleum (Beijing, etc. CN1167870A) patented technology is the back-up ring of pre-installation band casting lug thereon (or plug defining baffle) on setting well depth sleeve pipe, during well cementing operation, upper cushion rubber moves down and meets with back-up ring in sleeve pipe, obstruction top cement plug time-out by back-up ring casting lug thereon (or plug defining baffle) moves and the pump pressure of slush pump is raised, when pump pressure is elevated to certain value, the casting lug thereon (or plug defining baffle) of ring washer is cut off and continues to move down by top cement plug, and the pressure of slush pump is recovered, can judge that top cement plug has arrived setting well depth position according to the pump pressure change of slush pump, also the well depth position of top cement plug can be judged according to the compression wave passing time difference measured by well head pressure transmitter.Analysis of data is known, preset back-up ring technology and can only know that top cement plug has arrived setting well depth, and the real time position parameter arrived in setting well depth process can not be known, the factors such as back-up ring casting lug thereon (or plug defining baffle) inefficacy, top cement plug breakage and sleeve pipe deformation leakage of shearing as run into all may make well cementing operation failure and cause tremendous economic to lose, therefore monitoring top cement plug real time position is of crucial importance continuously.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide that a kind of handling safety, time saving and energy saving, compact conformation, information transmission are reliable, observing and controlling and data results is reliable, certainty of measurement is high intelligentized oil gas well cementation top cement plug position monitoring device and detection method thereof.
Object of the present invention is achieved through the following technical solutions: a kind of oil gas well cementation top cement plug position monitoring device, it comprises the sleeve pipe of vertical setting, box cupling detection subsystem, optoelectronic information transmission subsystem and top cement plug observing and controlling and analyzing subsystem, float collar and bottom plug is provided with in sleeve pipe, bottom plug is arranged on float collar, described box cupling detection subsystem is by top cement plug pipe nipple, top cement plug and collar detector composition, top cement plug pipe nipple is arranged on the top of sleeve pipe, top cement plug is arranged in top cement plug pipe nipple, collar detector is arranged on the top of top cement plug, described optoelectronic information transmission subsystem is by monitoring sleeve, and the erosion control support tube be arranged in monitoring sleeve, fiber drum, photoelectric signal converter and photosignal transceiver composition, monitoring sleeve is arranged on the top of top cement plug pipe nipple, the inwall of monitoring sleeve is provided with on-slip lock ring, erosion control support tube is arranged on on-slip lock ring top, fiber drum is arranged on the top of erosion control support tube, photoelectric signal converter is arranged on the top of fiber drum, optical fiber discharging mechanism is provided with in fiber drum, optical fiber discharging mechanism is wound with optical fiber, optical fiber one end is connected with collar detector, the other end of optical fiber is connected with photoelectric signal converter, photoelectric signal converter is connected with photosignal transceiver, top cement plug observing and controlling and analyzing subsystem are by the data acquisition and the TT&C system that are arranged on monitoring sleeve outside, pressure and temperature transmitter and host computer composition, the working end of pressure and temperature transmitter is communicated with monitoring sleeve, host computer is connected with data acquisition and TT&C system, data acquisition and TT&C system and photosignal transceiver and pressure and temperature transmitter are connected, it also comprises liquid-filling valve, outlet valve, high-pressure stop valve A and high-pressure stop valve B, liquid-filling valve, outlet valve and high-pressure stop valve A are all communicated with monitoring sleeve, liquid-filling valve and outlet valve are arranged on the top of monitoring sleeve, high-pressure stop valve A is arranged on the bottom of monitoring sleeve, high-pressure stop valve B is communicated with top cement plug pipe nipple.
Described collar detector adopts with top cement plug and is threaded or bonds.
Described optical fiber is single-mode fiber or multimode fibre, and described optical fiber also can arrange float string.
Described monitoring sleeve and top cement plug pipe nipple adopt screw thread or Flange joint.
Described high-pressure stop valve A and high-pressure stop valve B is motor operated valve, pneumatic operated valve or hand-operated valve.
Described photoelectric signal converter and photosignal transceiver process by explosion-proof waterproofing materials, and photoelectric signal converter and photosignal transceiver are all connected with power supply.
Described photoelectric signal converter and photosignal transceiver adopt wire transmission signal or wireless signal transmission.
Described host computer is graphic control panel or the computer of band embedded system.
Described optical fiber also can be cable.
A detection method for oil gas well cementation top cement plug position monitoring device, it comprises the following steps:
The initial setting up of S1, monitoring device, loads in top cement plug pipe nipple, connection coupling detector and top cement plug by top cement plug; Insert in fiber drum by optical fiber discharging mechanism, by one end connection coupling detector of optical fiber, the other end of optical fiber connects photoelectric signal converter; Photoelectric signal converter is connected with photosignal transceiver; With on-slip lock ring, erosion control support tube and fiber drum are fixed in monitoring sleeve; Top cement plug pipe nipple upper end is connected with monitoring sleeve flange, top cement plug pipe nipple lower end is connected with casing threads (or flange); High-pressure stop valve A is connected with supplying drilling fluid system, drilling mud pump respectively with high-pressure stop valve B; Through liquid-filling valve to injection pressure equilibrium liquid in monitoring sleeve, the air of discharging in monitoring sleeve is discharged through outlet valve; Photoelectric signal converter, pressure and temperature transmitter are connected with host computer with data acquisition and TT&C system, sending instruction by host computer to data acquisition and TT&C system can make this monitoring device be in wait test mode, thus achieves the initial setting up of monitoring device;
S2, the monitoring of well cementing operation and top cement plug, when well cementing operation, drilling mud pump pumps into the cement paste for cementing the well until fill sleeve pipe by high-pressure stop valve B in sleeve pipe, after filling, close high-pressure stop valve B and open high-pressure stop valve A, supplying drilling fluid system pumps into drilling fluid by high pressure stop valve A in monitoring sleeve, due to the Incoercibility of drilling fluid and pressure balance liquid, along with drilling fluid continue pump into drilling fluid volume and increase gradually, pressure change makes top cement plug along sleeve pipe to underground moving, collar detector synchronously starts the displacement detecting top cement plug in real time, casing collar location, pressure and other parameters, these parameters are passed to data acquisition and TT&C system through optical fiber by collar detector, data acquisition and TT&C system by electrical signal transfer to host computer, the mobile location information of host computer real-time reception and analysis display down-hole top cement plug, slush pump continuous operation is until top cement plug arrives design well depth and bottom plug " bruising " is that well cementing operation completes afterwards, thus achieve the monitoring of well cementing operation and top cement plug,
S3, after step S2 terminates, close high-pressure stop valve A, open outlet valve to carry out monitoring sleeve 7 pressure release;
S4, the optical fiber making fiber drum outside and fiber drum machinery departs from, and the optical fiber of disengaging is stayed in well middle sleeve with top cement plug, because optical fiber and collar detector select the character of manufactured materials, therefore, stays in well and has no effect to subsequent well construction;
S5, electricity depart from data acquisition and TT&C system and host computer, machinery and depart from sleeve pipe and top cement plug pipe nipple, retain optical fiber, can wait ready to be reused after cleaning device in recovery well.
The present invention has the following advantages: (1) slush pump causes top cement plug to underground moving to the incompressible drilling fluid of injected slurry volume in sleeve pipe, the magnetoelectricity photodetector be mechanically connected with top cement plug can the parameter such as the position of Real-Time Monitoring top cement plug in sleeve pipe, and parameter information reaches data acquisition and TT&C system in the mode of light by optical fiber, then reach host computer by data acquisition and TT&C system.(2) the present invention is applicable to various well casing caliber, can on land, the various cementing operation working wells of ocean use, compare and judge to carry out the more directly perceived and science of well cementing operation supervision with artificial experience now.(3) monitoring equipment of the present invention have rational in infrastructure, measure and analysis result reliable and have that real-time, touch screen program are easy and simple to handle, well cementation field operation commander, failure predication and process had more the reliable test data analysis basis of science.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure, 1-sleeve pipe, 2-float collar, 3-bottom plug, 4-top cement plug pipe nipple, 5-top cement plug, 6-collar detector, 7-monitors sleeve, 8-erosion control support tube, 9-fiber drum, 10-photoelectric signal converter, 11-photosignal transceiver, 12-on-slip lock ring, 13-optical fiber, 14-data acquisition and TT&C system, 15-pressure and temperature transmitter, 16-host computer, 17-outlet valve, 18-liquid-filling valve, 19-high-pressure stop valve A, 20-high-pressure stop valve B, 21-rig floor.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:
As shown in Figure 1, a kind of oil gas well cementation top cement plug position monitoring device, it comprises the sleeve pipe 1 of vertical setting, box cupling detection subsystem, optoelectronic information transmission subsystem and top cement plug observing and controlling and analyzing subsystem, float collar 2 and bottom plug 3 is provided with in sleeve pipe 1, bottom plug 3 is arranged on float collar 2, described box cupling detection subsystem is by top cement plug pipe nipple 4, top cement plug 5 and collar detector 6 form, top cement plug pipe nipple 4 is arranged on the top of sleeve pipe 1, monitoring sleeve 7 adopts Flange joint with top cement plug pipe nipple 4, top cement plug 5 is arranged in top cement plug pipe nipple 4, collar detector 6 is arranged on the top of top cement plug 5, collar detector 6 adopts with top cement plug 5 and is threaded or bonds.
As shown in Figure 1, optoelectronic information transmission subsystem forms by monitoring sleeve 7 and being arranged on erosion control support tube 8, fiber drum 9, photoelectric signal converter 10 and the photosignal transceiver 11 of monitoring in sleeve 7, because erosion control support tube 8, fiber drum 9, photoelectric signal converter 10 and photosignal transceiver 11 are all arranged in monitoring sleeve 7, therefore, it is possible to effectively prevent equipment from surprisingly falling into well or be subject to top cement plug recoil effect.Can prevent the mud injected through high pressure valve A from optical fiber is discharged to the impact damage caused during described well cementing operation, monitoring sleeve 7 is arranged on the top of top cement plug pipe nipple 4, the inwall of monitoring sleeve 7 is provided with on-slip lock ring 12, erosion control support tube 8 is arranged on on-slip lock ring 12 top, fiber drum 9 is arranged on the top of erosion control support tube 8, photoelectric signal converter 10 is arranged on the top of fiber drum 9, optical fiber discharging mechanism is provided with in fiber drum 9, optical fiber discharging mechanism is wound with optical fiber 13, thus can guarantee that optical fiber 13 can move in sleeve pipe 1 with top cement plug 5, guarantee optical fiber 13 smooth discharge.Optical fiber 13 is single-mode fiber or multimode fibre.Described optical fiber 13 also can arrange float string, and optical fiber 13 one end is connected with collar detector 6, and the other end of optical fiber 13 is connected with photoelectric signal converter 10, and photoelectric signal converter 10 is connected with photosignal transceiver 11.Described optical fiber 13 also can be cable.
As shown in Figure 1, top cement plug observing and controlling and analyzing subsystem form by being arranged on the data acquisition of monitoring sleeve 7 outside and TT&C system 14, pressure and temperature transmitter 15 and host computer 16, the working end of pressure and temperature transmitter 15 is communicated with monitoring sleeve 7, host computer 16 is graphic control panel or the computer of band embedded system, host computer 16 is connected with data acquisition and TT&C system 14, and data acquisition and TT&C system 14 and photosignal transceiver 11 and pressure and temperature transmitter 15 are connected.
As shown in Figure 1, it also comprises liquid-filling valve 18, outlet valve 17, high-pressure stop valve A19 and high-pressure stop valve B20, high-pressure stop valve A19 and high-pressure stop valve B20 is motor operated valve, pneumatic operated valve or hand-operated valve, liquid-filling valve 18, outlet valve 17 and high-pressure stop valve A19 are all communicated with monitoring sleeve 7, liquid-filling valve 18 and outlet valve 17 are arranged on the top of monitoring sleeve 7, high-pressure stop valve A19 is arranged on the bottom of monitoring sleeve 7, and high-pressure stop valve B20 is communicated with top cement plug pipe nipple 4.
Described photoelectric signal converter 10 and photosignal transceiver 11 process by explosion-proof waterproofing materials, and photoelectric signal converter 10 and photosignal transceiver 11 are all connected with power supply.Described photoelectric signal converter 10 and photosignal transceiver 11 adopt wire transmission signal or wireless signal transmission.
A detection method for oil gas well cementation top cement plug position monitoring device, it comprises the following steps:
The initial setting up of S1, monitoring device, loads top cement plug 5 in top cement plug pipe nipple 4, connection coupling detector 6 and top cement plug 5; Inserted by optical fiber discharging mechanism in fiber drum 9, by one end connection coupling detector 6 of optical fiber 13, the other end of optical fiber 13 connects photoelectric signal converter 10; Photoelectric signal converter 10 is connected with photosignal transceiver 11; With on-slip lock ring 12, erosion control support tube 8 and fiber drum 9 are fixed in monitoring sleeve 7; By top cement plug pipe nipple 4 upper end and monitoring sleeve 7 Flange joint, top cement plug pipe nipple 4 lower end is connected with sleeve pipe 1 screw thread (or flange); High-pressure stop valve A19 is connected with supplying drilling fluid system, drilling mud pump respectively with high-pressure stop valve B20; Through liquid-filling valve 18 to injection pressure equilibrium liquid in monitoring sleeve 7, the air of discharging in monitoring sleeve 7 is discharged through outlet valve 17; Photoelectric signal converter 10, pressure and temperature transmitter 15 is connected with host computer 16 with data acquisition and TT&C system 14, sending instruction by host computer 16 to data acquisition and TT&C system 14 can make this monitoring device be in wait test mode, thus achieves the initial setting up of monitoring device;
S2, the monitoring of well cementing operation and top cement plug, when well cementing operation, drilling mud pump pumps into the cement paste for cementing the well until fill sleeve pipe 1 by high-pressure stop valve B20 in sleeve pipe 1, after filling, close high-pressure stop valve B20 and open high-pressure stop valve A19, supplying drilling fluid system pumps into drilling fluid by high pressure stop valve A in monitoring sleeve 7, due to the Incoercibility of drilling fluid and pressure balance liquid, along with drilling fluid continue pump into drilling fluid volume and increase gradually, pressure change makes top cement plug 5 along sleeve pipe 1 to underground moving, collar detector 6 synchronously starts the displacement detecting top cement plug 5 in real time, casing collar location, pressure and other parameters, these parameters are passed to data acquisition and TT&C system 14 through optical fiber 13 by collar detector 6, data acquisition and TT&C system 14 by electrical signal transfer to host computer 16, the mobile location information of host computer 16 real-time reception and analysis display down-hole top cement plug 5, slush pump continuous operation is until top cement plug arrives design well depth and bottom plug 3 " bruising " is that well cementing operation completes afterwards, thus achieve the monitoring of well cementing operation and top cement plug,
S3, after step S2 terminates, close high-pressure stop valve A19, open outlet valve 17 to carry out monitoring sleeve 7 pressure release;
S4, the optical fiber 13 of fiber drum 9 outside is departed from fiber drum 9 machinery, the optical fiber 13 departed from is stayed in well middle sleeve 1 with top cement plug 5, because optical fiber 13 and collar detector 6 select the character of manufactured materials, therefore, stay in well and subsequent well construction is had no effect;
S5, electricity depart from data acquisition and TT&C system 14 departs from sleeve pipe 1 and top cement plug pipe nipple 4 with host computer 16, machinery, retains optical fiber, can wait ready to be reused after cleaning device in recovery well.
Claims (10)
1. an oil gas well cementation top cement plug position monitoring device, it is characterized in that: it comprises the sleeve pipe (1) of vertical setting, box cupling detection subsystem, optoelectronic information transmission subsystem and top cement plug observing and controlling and analyzing subsystem, float collar (2) and bottom plug (3) is provided with in sleeve pipe (1), bottom plug (3) is arranged on float collar (2), described box cupling detection subsystem is by top cement plug pipe nipple (4), top cement plug (5) and collar detector (6) composition, top cement plug pipe nipple (4) is arranged on the top of sleeve pipe (1), top cement plug (5) is arranged in top cement plug pipe nipple (4), collar detector (6) is arranged on the top of top cement plug (5), described optoelectronic information transmission subsystem is by monitoring sleeve (7), and the erosion control support tube (8) be arranged in monitoring sleeve (7), fiber drum (9), photoelectric signal converter (10) and photosignal transceiver (11) composition, monitoring sleeve (7) is arranged on the top of top cement plug pipe nipple (4), the inwall of monitoring sleeve (7) is provided with on-slip lock ring (12), erosion control support tube (8) is arranged on on-slip lock ring (12) top, fiber drum (9) is arranged on the top of erosion control support tube (8), photoelectric signal converter (10) is arranged on the top of fiber drum (9), fiber drum is provided with optical fiber discharging mechanism in (9), optical fiber discharging mechanism is wound with optical fiber (13), optical fiber (13) one end is connected with collar detector (6), the other end of optical fiber (13) is connected with photoelectric signal converter (10), photoelectric signal converter (10) is connected with photosignal transceiver (11), top cement plug observing and controlling and analyzing subsystem are by being arranged on the outside data acquisition of monitoring sleeve (7) and TT&C system (14), pressure and temperature transmitter (15) and host computer (16) composition, the working end of pressure and temperature transmitter (15) is communicated with monitoring sleeve (7), host computer (16) is connected with data acquisition and TT&C system (14), data acquisition and TT&C system (14) and photosignal transceiver (11) and pressure and temperature transmitter (15) are connected, it also comprises liquid-filling valve (18), outlet valve (17), high-pressure stop valve A(19) and high-pressure stop valve B(20), liquid-filling valve (18), outlet valve (17) and high-pressure stop valve A(19) be all communicated with monitoring sleeve (7), liquid-filling valve (18) and outlet valve (17) are arranged on the top of monitoring sleeve (7), high-pressure stop valve A(19) be arranged on the bottom of monitoring sleeve (7), high-pressure stop valve B(20) be communicated with top cement plug pipe nipple (4).
2. a kind of oil gas well cementation top cement plug position monitoring device according to claim 1, is characterized in that: described collar detector (6) adopts with top cement plug (5) and is threaded or bonds.
3. a kind of oil gas well cementation top cement plug position monitoring device according to claim 1, is characterized in that: described optical fiber (13) is single-mode fiber or multimode fibre, described optical fiber (13) also can arrange float string.
4. a kind of oil gas well cementation top cement plug position monitoring device according to claim 1, is characterized in that: described monitoring sleeve (7) and top cement plug pipe nipple (4) adopt screw thread or Flange joint.
5. a kind of oil gas well cementation top cement plug position monitoring device according to claim 1, is characterized in that: described high-pressure stop valve A(19) and high-pressure stop valve B(20) be motor operated valve, pneumatic operated valve or hand-operated valve.
6. a kind of oil gas well cementation top cement plug position monitoring device according to claim 1, it is characterized in that: described photoelectric signal converter (10) and photosignal transceiver (11) process by explosion-proof waterproofing materials, and photoelectric signal converter (10) and photosignal transceiver (11) are all connected with power supply.
7. a kind of oil gas well cementation top cement plug position monitoring device according to claim 1 or 6, is characterized in that: described photoelectric signal converter (10) and photosignal transceiver (11) adopt wire transmission signal or wireless signal transmission.
8. a kind of oil gas well cementation top cement plug position monitoring device according to claim 1, is characterized in that: described host computer (16) is graphic control panel or the computer of band embedded system.
9. a kind of oil gas well cementation top cement plug position monitoring device according to claim 1, is characterized in that: described optical fiber (13) also can be cable.
10., according to the detection method of a kind of oil gas well cementation top cement plug position monitoring device in claim 1 ~ 8 described in any one, it is characterized in that: it comprises the following steps:
The initial setting up of S1, monitoring device, loads top cement plug (5) in top cement plug pipe nipple (4), connection coupling detector (6) and top cement plug (5); Inserted by optical fiber discharging mechanism in fiber drum (9), by one end connection coupling detector (6) of optical fiber (13), the other end of optical fiber (13) connects photoelectric signal converter (10); Photoelectric signal converter (10) is connected with photosignal transceiver (11); With on-slip lock ring (12), erosion control support tube (8) and fiber drum (9) are fixed in monitoring sleeve (7); By top cement plug pipe nipple (4) upper end and monitoring sleeve (7) Flange joint, by top cement plug pipe nipple (4) lower end and sleeve pipe (1) Flange joint; By high-pressure stop valve A(19) with high-pressure stop valve B(20) be connected with supplying drilling fluid system, drilling mud pump respectively; Through liquid-filling valve (18) to injection pressure equilibrium liquid in monitoring sleeve (7), the air of discharging in monitoring sleeve (7) is discharged through outlet valve (17); Photoelectric signal converter (10), pressure and temperature transmitter (15) are connected with host computer (16) with data acquisition and TT&C system (14), sending instruction by host computer (16) to data acquisition and TT&C system (14) can make this monitoring device be in wait test mode, thus achieves the initial setting up of monitoring device;
S2, the monitoring of well cementing operation and top cement plug, when well cementing operation, drilling mud pump is by high-pressure stop valve B(20) in sleeve pipe (1), pump into the cement paste for cementing the well until fill sleeve pipe (1), after filling, close high-pressure stop valve B(20) and open high-pressure stop valve A(19), supplying drilling fluid system pumps into drilling fluid by high pressure stop valve A in monitoring sleeve (7), due to the Incoercibility of drilling fluid and pressure balance liquid, along with drilling fluid continue pump into drilling fluid volume and increase gradually, pressure change makes top cement plug (5) along sleeve pipe (1) to underground moving, collar detector (6) synchronously starts the displacement detecting top cement plug (5) in real time, casing collar location, pressure and other parameters, these parameters are passed to data acquisition and TT&C system (14) through optical fiber (13) by collar detector (6), data acquisition and TT&C system (14) by electrical signal transfer to host computer (16), the mobile location information of host computer (16) real-time reception and analysis display down-hole top cement plug (5), slush pump continuous operation is until top cement plug arrives design well depth and bottom plug (3) " bruising " is that well cementing operation completes afterwards, thus achieve the monitoring of well cementing operation and top cement plug,
S3, after step S2 terminates, close high-pressure stop valve A(19), open outlet valve (17) to carry out monitoring sleeve 7 pressure release;
S4, the optical fiber (13) making fiber drum (9) outside depart from fiber drum (9) machinery, the optical fiber (13) departed from is stayed in well middle sleeve (1) with top cement plug (5), because optical fiber (13) and collar detector (6) select the character of manufactured materials, therefore, stay in well and subsequent well construction is had no effect;
S5, electricity depart from data acquisition and TT&C system (14) departs from sleeve pipe (1) and top cement plug pipe nipple (4) with host computer (16), machinery, retains optical fiber, can wait ready to be reused after cleaning device in recovery well.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727451A (en) * | 2020-12-31 | 2021-04-30 | 中国科学技术大学 | Testing method for positioning underground karst cave |
| US11208885B2 (en) | 2020-01-31 | 2021-12-28 | Halliburton Energy Services, Inc. | Method and system to conduct measurement while cementing |
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Cited By (5)
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| US11208885B2 (en) | 2020-01-31 | 2021-12-28 | Halliburton Energy Services, Inc. | Method and system to conduct measurement while cementing |
| GB2604285A (en) * | 2020-01-31 | 2022-08-31 | Halliburton Energy Services Inc | Method and system to conduct measurement while cementing |
| GB2604285B (en) * | 2020-01-31 | 2023-12-06 | Halliburton Energy Services Inc | Method and system to conduct measurement while cementing |
| CN112727451A (en) * | 2020-12-31 | 2021-04-30 | 中国科学技术大学 | Testing method for positioning underground karst cave |
| CN112727451B (en) * | 2020-12-31 | 2023-03-10 | 中国科学技术大学 | Testing method for positioning underground karst cave |
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