SY 5474-1992 Gyroscopic single and multi-point photographic inclinometer measurement procedures
Some standard content:
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY 5474--92
Gyroscopic Single-point and Multi-point Photographic Inclinometer
Measurement Procedure
1992-09-17 Issued
Ministry of Energy of the People's Republic of China
1993-02-01 Implementation
1 Subject Content and Scope of Application
Petroleum and Natural Gas Industry Standard of the People's Republic of China Gyroscopic Single-point and Multi-point Photographic Inclinometer Measurement Procedure SY 5474-92
This standard specifies the preparation and inspection, on-site measurement steps, data processing methods and maintenance, transportation and storage of gyroscopic single-point and multi-point photographic inclinometers.
This standard applies to gyroscopic single-point and multi-point photographic inclinometers used in natural gas drilling. 2 Preparation and inspection of single-point and multi-point photographic inclinometers 2.1 Preparation
2.1.1 Equipment list of single-point gyroscopic inclinometer, see Appendix A (supplement). 2.1.2 Equipment list of multi-point gyroscopic inclinometer, see Appendix B (supplement). 2.2 Inspection
2.2.1 Instrument barrel
a. No deformation and damage,
b. No wear on the threads at both ends, clean inner wall
c. The seal is intact.
Center (device)
a: The size of the centralizer matches the inner diameter of the logging casing (drill pipe): good performance, light deformation.
The appearance of the gyro is intact, and the thread of the positioning pin has no external damage or deformation. b. Preheat the pin and connect it to the external power supply.
c. Connect the gyro power supply;
d. Measure the battery voltage, and the reading meets the requirements. e. After 13 minutes, connect the test tube to the gyro and measure the gyro current and voltage. The reading meets the requirements. The gyro is tilted 10 to 20 degrees, and the inner wall should return to the horizontal position within 1 minute. f
Draw the short section and the battery tube
Install the battery into the battery tube as required:
b Connect the battery section to the control short section;
c. Insert the gyro into the gyro seat of the control short section. d. Connect the test meter to the test hole, measure the voltage and current, and the reading meets the requirements. 2.2.5 Photographic mechanism
a. Connect the single-point and multi-point photo-angle mechanism to the gyro I respectively, and work for 15 minutes. Develop the film and make sure the film is correct;
c. The single-point film should be clearly visible, and the multi-point film should be evenly rolled and the image should be clear, and then the film should be loaded. Approved by the Ministry of Energy of the People's Republic of China on September 17, 1992 and implemented on February 1, 1993
2.2.6 The appearance of the rest of the parts should be intact.
2.2.7 Pack the instruments and equipment and fill in the packing list 3 On-site measurement steps for gyroscopic single-point photography inclinometer SY5474-92
3.1 Check the instruments and equipment according to the packing list, and verify the relevant data to be measured in accordance with 2.2 and 3.2.
3.3 Select the reference sundial:
3.3.1 Select a fixed object on land as the reference sundial, use a pocket theodolite to measure the reference azimuth value, convert it into geographical azimuth, and record it.
3.3.2 Determine it with a gyrocompass at sea.
3.4 Install the sky and ground pulleys so that the center lines of the sky and ground pulleys and the winch are on the same plane. 3.5 Adjust and assemble the bevel tube shoe assembly so that its keyway is facing upward and aligned with the positioning pin hole of the control short section, and install the lead block. 3.6 Pass the cable and cable head through the ground pulley and the sky pulley. 3.7 Check the battery. The short-circuit current must be greater than 3A. Install the battery: connect the control short section. 3.8 Power on the gyro for 30 minutes. The zero point of the gyro cursor faces the measurement personnel, and the opposite side of the cursor zero point faces the reference sun mark. 3.9 Connect the instrument cylinder and the battery cylinder, put them in, and the instrument cylinder is on the turntable surface. 3.10 Place the directional frame in the control short section, remove the instrument cylinder, lift it with a winch, and install the upper and lower telescopes. 3.11
Put the running gyro on the excavated short section and cover it with a plastic bag. 3.12bzxZ.net
Connect the test meter to the control short section, measure the voltage and current, and record the readings if they meet the requirements. 3.13 Connect the angle measuring mechanism, camera connector and single-point instrument, install the single-point liquid film, and generally set the timer at 2 minutes per 100m. 3.14 Install the upper telescope on the gyro, align the upper and lower telescopes with the reference sundial, use an insulating rod to gently move the inner frame of the gyro, align the reference target film position value on the scale plate with the vernier point, and remove the upper telescope. 3.15 Install the single-point instrument, camera connector and angle measuring mechanism on the gyro, straighten the instrument tube and slowly lower it, put the gyro into the tube, tighten the threads, and prevent the telescope from falling.
3.16 Lower the instrument, the speed shall not exceed 50m/nim, and reduce the speed at 30m from the seat key. Seat the instrument and wait for the single-point instrument to take pictures.
Lift the instrument at a speed not exceeding 60m/mir, and slowly lift it out about 30m from the lifting port. 3.19
After reaching the lifting port, place the control short seat on the directional frame, remove the instrument, straighten it and slowly lift it. Remove the single-point instrument and the angle measuring mechanism. 3.20
Install the telescope, aim at the reference target, and check the gyro drift, which should not exceed 12/1. 3.21
Remove the instrument. If the lead block on the bevel shoe has been flattened, then rinse the film: 3.22
Read the film.
Recover the instrument, clean it, and pack it.
4 On-site measurement steps of gyro multi-point photography inclinometer 4.1 Same as 3.1~3.4.
4.2 Connect the lower plug to the battery tube.
4.3 Same as 3.7~3.12.
4.4 When the parallel inclination is less than 10°, same as 3.14. When the parallel inclination is equal to or greater than 10°, use an insulating material to gently move the inner frame and align the S or N pole of the scale with the well limit direction. If the limit direction is in the ESW interval, align the S pole with the service azimuth value. Otherwise, align the N pole with the open limit azimuth value. Align the upper and lower telescopes with the reference sundial. 4.5 Install the multi-point camera mechanism and the angle measuring mechanism on the gyroscope and straighten it Slowly lower the instrument cylinder, install the gyroscope in the cylinder, and tighten the thread. Lower the telescope and push the reference moon mark, keep it still for 3 to 5 minutes, and do a drift check. 4.6 Zero the depth gauge, remove the directional frame, lower the instrument, and when it stops at the first measuring point, take a photo and record the time and measured depth. Select the measuring section length according to the product requirements. 4.7 The instrument lowering speed should not exceed 50m/min. 4.8 Keep the instrument still for 3 to 5 minutes every 15 minutes and do a drift check. Record the depth and time of each measuring point. 4.9 Stop about 10m from the bottom of the lift, lift the instrument, stop every 5 to 10 measuring points and take a photo to check the repeatability of the instrument. 4.10 After lifting the instrument to the parallel port, place it on the directional stand, aim the lower telescope at the reference target, and do a drift check. Remove the instrument shell, straighten it and lift it slowly, remove the multi-point camera mechanism and the angle measurement mechanism, 4.11 Use the lower telescope to aim at the reference sun mark and check the gyro drift. The gyro with a diameter of 63.50mm and a diameter of 76.20mm shall not exceed 6°/h, and the gyro with a diameter of 38.10mm and a diameter of 44.45mm shall not exceed 12/h. 4.1 2 Develop the film, read the measurement data, and record it. 4.13 Recover the instrument, clean it, and pack it. 5 Gyro multi-point photographic inclinometer data processing
5.1 Turn on the PC-1500 computer power supply and enter the gyro multi-point photographic inclinometer data processing program. 5.2 Input the original data of the measuring points in sequence, TIME (time), DFPTII (depth), 1NC (parallel inclination), OHD (observation azimuth), GA (gyro azimuth). 5.3 The computer performs frame error, grease error, and gyro excitation correction calculations, and prints out the well inclination and azimuth of each measuring point. And draw a drift curve.
6 Maintenance, transportation and storage of gyro single and multi-point photographic inclinometers 6.1 Apply butter to the threads of the instrument barrel and put on the wire guard. 6.2 Put on the electrical connector protection.
6.3 The gyroscope is transported in a special box to prevent shock and dust. 6.4 The instrument should be stored in a room with constant humidity and should not be in contact with corrosive substances such as acid and alkali. 3
Cable head
Pointing service
Swivel head
"0\ type sealing
Instrument room
Control without section
Battery tube
Single point instrument
Sweet machine posture head
Science and other light equipment
Film reader
SY5474-92
Appendix A
Equipment list of gyro single point photographic inclinometer
(supplement)
Backup machine and
No. 1 tank
No. 2 seat
Dating pole structure
Flushing liquid|| tt||Preheating box
、Xiawang Nijia
Chu Shang'an
Depth gauge
Big、Running pulley
Yunzhen meridian instrument
Measurement record sheet
Two boxes
Cable head
Swivel joint
Center
Dingli dry wire
"\ type pulling seal
Hanqi tube
Excavated short section
Wangchi Jian
Xia Luotou
No. 1 self-pool
No. 5 battery
Additional instructions:
"Single Li
SY 5474—92
Appendix B
Equipment list of gyro multi-point camera inclinometer
(supplement)
Multi-point camera
Sea secretion
Multi-point camera reader
Multi-point light bulb
Pre-excitation box
Flood test table
, "downward mirror
fixed stand
depth gauge
sky, ground pulley
diagnostic compass
measurement record table
PC-1500 calculation program and
data processing software
This standard is proposed and managed by the Oil Well Engineering Professional Standardization Committee, and this standard is drafted by the Hong Kong Petroleum Administration Directional Lifting Technology Service Company. The main drafter of this standard is Zhao Xiaotao.
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