SY/T 5518-2000 Specification for petroleum and natural gas well location measurement
Some standard content:
ICS 75.010
Registration No.: 6831-2000
Petroleum and Natural Gas Industry Standard of the People's Republic of ChinaSY7T55182000
Petroleum and Natural Gas Well Position Measurement Specification
The measuring standards of oil and gas well position2000-03-10 Issued
State Petroleum and Chemical Industry Bureau
200010-01 Implementation
SY/T 5518--2000
Basic basis and requirements
Work preparation
Field record notebook
Parallel position control measurement
Position map root point measurement
Compilation of re-measurement results
Data management·
SY/T5518-2000
According to the situation of oil and gas well location measurement, SY5518-92 "Petroleum and Natural Gas Exploration and Development Well Location Measurement Specification" was revised, supplemented and improved, and renamed "Petroleum and Natural Gas Well Location Measurement Specification". This standard deletes the relevant requirements and specific contents of the original standard on oil and gas field well location layout, instrument inspection and calibration, astronomical azimuth measurement, flatbed instrument and basic map, modifies the relevant contents of satellite positioning, field record and measurement requirements, adds relevant provisions for real-time differential satellite positioning system measurement, and makes unified provisions for some parallel position measurement terms. This standard replaces SY5518-92 from the date of implementation. This standard is proposed by China National Petroleum Corporation. This standard is authorized by the Petroleum Geological Exploration Professional Standard Promotion Committee. The drafting units of this standard are: Shengli Petroleum Administration Bureau Geological Logging Company, North China Petroleum Administration Bureau Logging Department. The main drafters of this standard are Yin Linwen, Yang Deyong, Wei Min, Ji Wei. This standard was first issued in November 1992. This version is the first revision. 1 Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China Measuring stanidards of oil and gas well position
The measuring stanidards of oil and gas well position This standard specifies the work content and requirements of oil and gas well position measurement. This standard is applicable to the measurement work of oil and gas well position. 2 Definitions
This standard adopts the following definitions.
2.1 the measuring of well μositinSY/T 5518—2UU0
replaces SY5518—92
The process of placing the designed well position on the ground and measuring the position of the well position during drilling and construction is generally called well position measurement. It includes initial measurement and re-measurement.
2.2first measuring
The process of placing the designed well position on the ground2.3re-measurement
The process of measuring the position of the well position during drilling and construction. 2.4the measuring of well position controlrointThe process of determining the control point of the well position measuring mouse.
2.5the turning point of well position measuringIt is the transition point of the initial measurement and positioning.
3 Basic basis and requirements
3.1 Based on the national geodetic control points, the survey is conducted in conjunction with the national unified coordinate system and elevation system. The coordinate system adopts the 1954 Beijing coordinate system, Gauss-German single grid conformal projection, and plane rectangular coordinates calculated by 6-degree zone division. The elevation system adopts the 1956 Yellow Sea elevation system. 3.2 National geodetic control points of all levels can be used as the primary control and measurement basis for well location measurement. 3.3 The triangulation traverse control points, military control points and satellite positioning points measured by other departments in the survey area can be used as the primary control points for well location measurement when they meet the accuracy requirements of well location measurement. 3,4 In the case of meeting the measurement accuracy of this standard, other methods and new technologies approved by the competent authorities shall be used for operation. 4 Operation preparation
4.1 Data collection
4.1.1 Topographic map, sea condition report, control point results and control point results expansion map, 4.1.2 and position map, structural map.
4.1.3 Survey results.
4.2 Survey area exploration
4.2.1 Understand the status of each level of survey control points. 4.2.2 Understand the topographic conditions of the survey area.
National Bureau of Petroleum and Chemical Industry 200-(3-10 approved 2000-10-01 implementation
4,2.3 Understand the distribution of well locations in the survey area. 4.3 Instrument inspection
SYF 5518-2000
4.3.1 The designated inspection unit shall conduct regular inspection and calibration, and use it within the validity period. 4.3.2 The measuring instrument shall meet the following indicators:
a) The sighting axis of the level shall be parallel to the water level tube; b) The relationship between the three axes of the theodolite and the total station sighting part shall meet the following requirements: 2℃ value is less than 1, and the index difference is less than 1. 5 Field record manual obstacles
5.1 Basic requirements
a) No page shall be missing in the notebook;
b) Use a pencil with a hardness of HB to 2H to fill in; c) It is strictly forbidden to make supplementary notes or copy from memory.
5.2 Modification of content
5.2.1 The second (\) value of the observed angle shall not be modified. 5.2.2 The minute (\) value and degree (\) value of the observed angle may be corrected on site, but the positive and negative mirror observation values in the same direction shall not be changed in the same way.
5.2.3 In vertical angle observation, the readings of each return shall not be corrected to the same number continuously. 5.2.4 The original records of distance measurement and leveling shall not be changed below the meter (m). 5.2.5 The decimeter (dm) and meter (m) values of distance measurement and leveling full volume may be corrected on site, but the round trip or two observation values of the same distance or the same height difference shall not be changed in series. 5.2.6 In case of correction errors, the wrong record shall be crossed out with a straight line, and the correct words and numbers shall be filled in above it. Erasure is strictly prohibited. For the crossed out unqualified records, the reasons shall be clearly stated.
5.3 Record the position of the summed calculation data
5.3.1 The angle observation values are all recorded to the second (\). 5.3.2 In distance measurement, the control measurement is recorded to the millimeter (mm), the joint re-measurement and the joint base point measurement are recorded to the centimeter (cm), and the joint initial measurement is recorded to the meter (m).
5.3.3 The calculation results are recorded according to the corresponding recording standards. 6 Joint control measurement
When the control points cannot meet the co-location measurement, the well location measurement control points can be arranged. The plane position of the joint measurement control points can be determined by satellite positioning, intersection measurement or traverse measurement according to the terrain and the distribution of national control points. The elevation of the well location measurement control points can be measured by satellite positioning or leveling traverse. 6.1 Intersection method measurement
In areas with open vision and good visibility, if the control points meet the requirements of the intersection method, the well location measurement control points can be developed using forward intersection, rear intersection, side intersection or distance intersection. 6.1.1. The development of well location measurement control points
is divided into levels according to the following standards, and the development level does not exceed three levels. 6.1.1.1 Points developed entirely from geodetic control points and satellite positioning points are first-level points. 6.1.1.2 Points developed from developed points in conjunction with geodetic control points and satellite positioning points have the same level as the lowest-level point among the starting points. 6.1.1.3 Points developed from developed points have a level lower than the lowest-level point among the starting points. 6.1.2 Graphic requirements
6.1.2.1 The vertex angle of the measurement point is between 30° and 150°. 6.1.2.2 The side length shall not exceed 10 kmmm
SY/T 5518—2000
6.1.2.3 In the back intersection measurement, the danger circle shall be prevented. 6.1.2.4 When the front intersection measurement is adopted, the backsight distance shall not be less than half of the foresight distance. 6.1.3 Horizontal angle observation
6.1.3.1 When observing two directions, the backsight method shall be adopted; when observing more than two directions, the full backsight method shall be adopted. 6.1.3.2 When using a J2-level theodolite, two measurement intervals or full circle measurement intervals shall be observed; when using a J. level theodolite, 1 measurement interval or full circle measurement interval shall be observed, and the degree plate shall be changed by 90° between measurement intervals
6.1.3.3 The zeroing error and 2C error tolerance of horizontal angle observation are detailed in Table 1. Table 1 Zeroing error and 2C error limit regulations
Semi-measurement national zeroing error
Semi-measurement regression seasonal error
6.1.4 Observation number and data calculation
6.1.4.1 There should be a check edge.
Data calculation adopts simplified adjustment method.
G.1.4.3 The difference between the results of two sets of graphic calculations shall not exceed 0.75m, 6.2 Traverse measurement
6.2.1 Take the geodetic control point or satellite positioning point as the starting pointJ
6.2.2 Select a point farther away as the backsight point, and the backsight distance shall not be less than half of the foresight distance. 6.2.3 When using branch traverse or deformable traverse to lay out and measure control points, the horizontal angle observation shall be in accordance with 6,1.3, Is
6.2.4 When there are many measurement control points to be laid out and the points are distributed in a straight extension, closed traverse or attached traverse can be used to lay out the first and second level traverses according to the actual conditions.
6.2.4.1 The accuracy and specifications of the traverse are shown in Table 2. Table 2 Accuracy and specifications of the traverse
Total length of traverse
Closed traverse
Attached traverse
Length of one side
500 3000
200~ 800
Relative total length
Closure error
1/15000
1/6000
Number of measurement rounds
6.2.4.2 The zeroing error and 2C error limit of the horizontal angle observation of the traverse point shall be in accordance with 6.1.3.3. The closure error of the azimuth shall meet the following requirements: For the first-level traverse, 0±10/\; For the first-level traverse, 0±20V\; n is the number of measuring stations s6,2.4.3 The simplified half-difference method is used for the calculation of the traverse points. The side length is converted to the mean sea half surface and Gauss projection surface for length correction.
6.3 Height Control Measurement
6.3.1 Measurement
The first and second level lines are measured by trigonometric height network or height route method. SYT 5518—2000
6.3.1.2 The starting point and closing control point of the first level leveling line should be measured in conjunction with the equal external water point. 6.3.1.3 The vertical angles of the two-angle height measurement should be observed in the opposite direction. 6.3.2 Route length and accuracy requirements
Route length and accuracy requirements are shown in Table 3-
Route length and accuracy requirements
Basic control points
Control points
Total length of route
Note: S is the side length, in units of 100m. When it is less than 300m, it is calculated as 300m. 6.3.3 Calculation
Opposite observation
Poor height difference
Route closure error,
Poor height difference of independent intersection point
6.3.3.1. The height calculation of basic control points is based on the trigonometric height network, trigonometric height route or the height route of the node, and the weighted adjustment is made with the inverse of the distance
. 3.3.2 The earth rate and atmospheric refraction correction are added to the trigonometric height calculation. 6,4 Satellite positioning
6.4.1 Point selection
Satellite positioning points should be selected at locations with clear sight and prominent targets. 6.4.1.2 They should be buried in stones or selected on fixed targets. 6,4.1.3 The control points for joint measurement should be the highest level control points in the measurement area, and the level of water push points should not be lower than level 4. 6.4.1.4 There should be no obstacles in the space above the 15° cut-off elevation angle. Multipath effects caused by large areas of water or electromagnetic waves should be avoided. 6.4.1.5
6.4.1.6 There should be no strong electromagnetic wave radiation sources within 1001 of the surrounding area. 6.4.2 Networking
Independent observation edges should be used to form a closed figure. 6.4,2.2 Observation points should be evenly distributed.
6.4.2.3 The baseline distance is within 20km
6.4.3 The number of observation periods and the length of the period meet Table 4.
Table 4 The number of observation periods and the length of the period
Satellite altitude angle
Number of observation periods
Note: At night, the observation time can be reduced by half or the distance can be doubled4
Baseline average distance
Period length
60 ~120
50 -100
4I1 - HA
6.4.3.2 The precision factor is less than 4.0.
6.4.4 Calculation
SY/T 5518--2000
6.4.4.1 The baseline variance ratio is greater than 3.0 and the mean square error is less than 20mm. 6.4.4.2 The difference between the baselines in different observation periods shall be less than 2 times the specified accuracy of the corresponding level, and the result of any period and the average value of each period shall not exceed the specified accuracy of the corresponding level. 6.4.4.3 The measurement results of satellite positioning shall be converted into the current unified national coordinate system and elevation system. 7.2.1 The control points and the old points of the elevation measurement can be used as the basis points for measuring the base points of the base points of the base points. 7.2.1 The horizontal angle observation shall only measure one full circle measurement. 7.2.2 The vertex angle of the point of the back intersection measurement shall be between 25° and 155. 7.2.3 No more than two points shall be developed by the branch line, and the measurement side length shall be less than 3000m. 7.2.4 When using rear intersection or deformation traverse measurement, there should be a check edge, and the difference in the calculated results should be less than 3.0ms8 Preliminary measurement
8.1 Basis for preliminary measurement of parallel position
8.1.1 Straight parallel. Use coordinates as inference.
8.1.2 For horizontal wells and double-target inclined wells, the wellhead coordinates calculated according to the drilling construction design requirements are used as inference. 8.1.3 For single-target inclined wells, the selected wellhead position is used as the standard. 8.2 Preparation for preliminary measurement
8.2.1 Spread the designed parallel position on the topographic map, well location map, and pier structure map to understand the control points, old wells, and terrain conditions on site. 8.2.2 Parallel measurement control points, old parallels, and well location map root points can all be used as the basis points for preliminary measurement of well positions. The survey station and backsight point are selected according to the principles of convenience, accuracy, and feasibility.
8.3 Photoelectric instrument measurement
8.3.1 If the adjacent old non-points, control points and the terrain conditions on site cannot meet the initial measurement conditions, the base points of the plot map should be arranged. 8.3.2 Select points with high accuracy and close distance as the measuring stations. 8.3.3 Select control points with high accuracy and obvious moon marks as the backsight points. The backsight distance shall not be less than one-third of the foresight distance. 8.3.4 The initial measurement and screening should be calculated by two people separately, and the results should be consistent. 8.3.5 The reliability of the measuring station and the backsight point should be confirmed before the initial measurement. 8.3.6 The instrument should be placed on the measuring station and firmly installed. When it is impossible to place the instrument, the instrument can be placed on the line connecting the starting point and the rear point, and the initial measurement and positioning should be corrected accordingly according to the direction and distance of deviation, but the deviation distance should not exceed 10m. 8.3.7 During the measurement process, the observer should read the observation results accurately and clearly, the recorder should repeat the recorded data, and the recorder should check the observation results. bZxz.net
8.4 Satellite positioning instrument measurement
8.4.1 Reference station selection
8.4.1.1 Use the control point of the positioning measurement as the base station. 8.4.1.2 Within the effective operation range of timely differential. 8.4.1.3 Avoid the influence of obstacles between the base station and the mobile station. 8.4.2 Reference station setting
8.4.2.1 The receiving line of the satellite positioning instrument should be centered and leveled. 8.4.2.2 The distance from the antenna of the radio station to the receiving antenna of the satellite positioning instrument should not be less than 5m. 8.4.2.3 There shall be no large obstacles blocking the satellite signal above 10° elevation angle on the human plane, and there shall be no strong electromagnetic radiation source within 100m. 8.4.2.5 Accurately input the elevation.
8.4.2.6 The coordinates of the reference station shall be calibrated.
8.4.2.7 Effectively update the coordinates of the reference station.
8.4.3 Establish a chart
8.4.3.1 The number of the chart shall not exceed 8 characters. 8.4.3.2 The horizontal axis Y must include the band number. 8.4.3.3 The scale shall correspond to the width and height of the chart. 8.4.4 Measure the most
8.4.4.1 The measurement result shall be based on the effective position under real-time differential. 8.4.4.2 After the mobile station reaches the initial measurement position of the designed parallel position, the continuous measurement time shall not be less than 2mmin, and the continuous recording of data shall not be less than 20, and the data shall meet the following requirements:
a) The swing amplitude of each coordinate shall not exceed 2m; b) The difference between each coordinate and the designed coordinate of the well position shall not exceed 211e8.4.4.3 During the measurement process, no telephone communication is allowed. 8.5 Parallel position marking
8.5.1, the initial measurement well position shall be buried with a wake-up sign and the number shall be clearly written. 8.5.2 Concealed piles shall be driven into the parallel position.
8.6 Measurement error
8.6.1 Development wells less than 10mu
8.6.2 Evaluation elevation less than 30m2
8.6.3 Pre-exploration wells, parameter wells and offshore wells less than 50m9 Re-survey
9.1 Method
9.1.1 The plane position of the well site is measured by forward intersection method, branch line method or guard house positioning method. 9.1.2 The elevation of the well site is measured by trigonometric height measurement. 9.2 Reference points
All levels of parallel measurement control points can be used as reference points for re-measurement and parallel positioning. 9.3 Measurement
9.3.1 The instrument should be placed firmly and centered and leveled. 9.3.2 The readings of the observer should be accurate and clear, and the recorder should repeat the recorded data. 9.3.3 The water level angle observation is the same as 6.1.3.1, only one measurement or full circle measurement is measured. 9.3.4 The zero error and 2C error limit of the water half angle observation are the same as 6.1.3.3. 9.3.5 The figure of the front intersection meets the following requirements:
a) The backsight distance shall not be less than half of the foresight distance; b) The vertex angle range of the measuring point is between 25°-155°; c) The side length does not exceed 10km.
9.3.6 There should be an inspection side.
9.4 Training Section
9.4.1 The results of calculation by two persons shall be consistent. 9.4.2 The difference between the calculation results of two figures shall not exceed 2.0m. 9.4.3 The error of the re-survey results shall meet the following requirements:
SY/T 5518—2000
a) Development wells and evaluation wells are less than 3m!
b) Pre-exploration wells, parameter wells and offshore wells are less than 5m9.4.4 The re-survey results shall be checked with the initial survey and movement results. 9.4.5 The registration of the re-survey results shall be proofread by the second person. 10
Compilation of re-survey results
10.1 Signature, date of issuance and issuing unit. 10.2
Contents include: well number, ordinate, abscissa, business line and remarks. Pre-exploration wells, parameter wells and offshore wells shall add longitude and latitude.
Signatures of the tabulator, proofreader and reviewer. 10.4 Use 16-mo binding.
See Figure 1 for the cover format of the resurvey results, and see Table 5 for the format of the resurvey results table. 11 Data management
11.1 Well location measurement data include: topographic maps, non-bitmaps, geodetic control point results, parallel measurement control point results, parallel bitmap root point results, well location resurvey results and original field measurement records. 11.2 Well location measurement data are state secrets and should be managed by a dedicated person in accordance with the system. Serial number
SY/T 5518—2000
Table 5 Format of resurvey results table
Well location resurvey results table
Rectangular coordinates
Vertical plummet X
Horizontal coordinate Y
Geod coordinates
Longitude A
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