SY/T 5464-1992 Calculation method of well logging perforation quality indexSY/T5464-1992 standard download decompression password: www.bzxz.net

SY/T5464-92, Petroleum and Natural Gas Industry Standard of the People's Republic of China
Calculation Method of Quality Index of Well Logging and Perforation
Published on June 30, 1992
Ministry of Energy of the People's Republic of China
Implementation on December 1, 1992
1 Subject Content and Scope of Application
Calculation Method of Quality Index of Well Logging and Perforation in Petroleum and Natural Gas Industry Standard of the People's Republic of China
This standard specifies the calculation method of various quality indexes of well logging, perforation and well logging interpretation results. This standard is applicable to the calculation and statistics of quality indexes of well logging, perforation and well logging interpretation results. 2 Well Logging Quality Index
SY/T5464--92
2.1 Well Logging One-Time Success Rate
The well logging one-time success rate is a comprehensive technical index to measure the performance of logging instruments and the level of well logging operations, and is expressed as the percentage of the number of logging successes to the number of logging successes.
2.1.1Calculation formula
RFTX100%..
Where: SRL—success rate of one-time measurement, %3SFL—number of successful measurements, times
RFT——number of instrument landings, times.
2.1.2Statistical scope
·（1）
2.1.2.1Number of instrument landings
Whenever the instrument is lowered below the wellbore, whether the logging is successful or not, it is counted as one landing. The failure of the instrument landing due to the poor quality of the wellbore or the unreasonable structure of the wellbore string is not counted. 2.1.2.2Number of successful measurements
When the instrument is lowered once and the qualified curves of all the items to be measured are obtained, it is counted as a successful measurement. 2.2 Qualified rate of logging curves
Qualified rate of logging curves is an indicator to measure the quality of logging data. It is expressed as the percentage of the number of qualified curves to the number of measured curves. The calculation formula is as follows:
Where: ARL——qualified rate of logging curves, %; AC——number of grid curves, pieces;
MC——number of measured curves, pieces.
（2）
2.3 Excellent quality rate of logging curves
The excellent quality rate of logging curves is another indicator to measure the quality of logging data. It is expressed as the percentage of the number of excellent curves to the number of measured curves. The calculation formula is as follows:
×100%
Approved by the Ministry of Energy of the People's Republic of China on June 30, 1992 (3)
Implemented on December 1, 1992
Wherein: GRL---excellent quality rate of logging and disconnection lines, %, GC-number of excellent curves, pieces
MC-number of measured curves, pieces.
3 Quality index of perforation operation
3.1 Perforation qualification rate
5464-92
The perforation qualification rate is a technical index to measure the level of perforation operation, which is expressed as the percentage of the ratio of the number of qualified perforations to the number of perforations.
Calculation formula
Where: ARP-perforation qualification rate, %
AP-perforation qualification number, times,
PF-perforation number, times. www.bzxz.net
3.1.2 Qualified number statistics
A qualified perforation means that the perforation depth error is within ±0.2m and the perforation rate reaches more than 95%. 3.2 Coring Emission Rate
Coring Emission Rate is a technical indicator to measure the level of coring operation, which is expressed as the percentage of the number of emitted particles to the number of ignited particles. Its calculation formula is as follows:
Where: SRSC-coring emission rate,%; SB-number of emitted particles, particles.
FB-number of ignited particles, particles.
3.3 Coring Harvest Rate
Coring Harvest Rate is a technical indicator to measure the effect of coring, which is expressed as the percentage of the number of recovered core particles to the number of ignited particles. Its calculation formula is as follows:
Where: RRSC-coring harvest rate,%1
RC-number of recovered core particles, particles;
FB-number of ignited particles, particles.
4 Quality indicators of exploration and interpretation
4. 1 Success rate of exploration and interpretation
The success rate of exploration and interpretation is an indicator to measure the quality of exploration and interpretation. It is expressed as the percentage of the number of layers whose interpretation conclusions are consistent with the test conclusions to the number of test layers. The calculation formula is as follows: Az
SRLI-Z
Wherein: SRL[Success rate of exploration and interpretation, %]: AZ - the number of layers whose interpretation conclusions are consistent with the test conclusions, layers; 2
TZ - the number of test layers, layers.
4.2 Logging interpretation conformity rate
SY/T 5464-92
The logging interpretation conformity rate is an indicator to measure the quality of development logging interpretation. It is expressed as the percentage of the number of layers whose interpretation conclusions are consistent with the oil test conclusions (or layered test conclusions) to the number of test layers. Its calculation formula is as follows: cz
Formula [, CRLI-logging interpretation conformity, %CZ-number of layers whose interpretation conclusions are consistent with the oil test conclusions (or layered test conclusions), layers, TZ-number of test layers, layers.
4.3 Statistical range of logging interpretation success rate and logging interpretation conformity rate (8)
4.3.1 Any logging and layer with unqualified solid quality, serious environmental impact caused by non-engineering drilling or unreliable oil test results shall not be included in the statistics.
4.3.2. When multiple layers are tested for fluid production, dry layers and suspected oil (gas) layers that are released in the test layer section will not be counted. 4.3.3 For layers that do not produce fluid during oil testing or whose daily fluid production is less than the industrial flow rate standard in the region, those interpreted as dry layers can be defined as successful interpretation layers or interpretation compliance layers, and those interpreted as other layers can be defined as unsuccessful layers or interpretation compliance layers. 4.3.4 Uninterpreted layers whose oil and gas production is confirmed to be greater than the industrial oil and gas flow standard in the region through oil testing are defined as oil and gas interpretation failure layers. 4.3.5 The submission date of the test results of exploration wells and development wells and the interpretation date are more than three years apart, and the interpretation date of water-flooded layers and the test run (production) period are more than three months apart, and the statistics of the test and interpretation success rate and the test and interpretation compliance rate are not included. 4.4 Oil and gas layer interpretation loss rate
Oil and gas layer interpretation loss rate is the percentage of the ratio of the number of oil (gas) layers lost in logging interpretation to the number of test layers. The calculation formula is as follows: LR-
Wherein, LR is the oil and gas layer interpretation loss rate, %X100%
LZ is the number of oil (gas) layers lost in logging interpretation, layers; TZ is the number of test layers, layers.
Additional remarks:
This standard is proposed and technically managed by the Petroleum Logging Professional Standardization Committee. This standard was drafted by the Well Logging Company of the Central Plains Petroleum Exploration Bureau. The main drafter of this standard is Liu Wencai.
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