This standard specifies the frequency and permissible values ​​of biological toxicity tests for some pollutants used or generated in offshore oil exploration and development operations and discharged into the sea in different sea areas, and puts forward requirements for the test methods and result determination of samples. This standard applies to the biological toxicity test of drilling mud, drill cuttings and production water used or generated in offshore oil exploration and development operations and discharged into the sea. The biological toxicity classification specified in this standard is also applicable to the toxicity classification of other offshore oil exploration and development pollutants not specified in this standard after appropriately adjusting the permissible toxicity values. GB 18420.1-2001 Biological Toxicity Classification of Offshore Oil Exploration and Development Pollutants GB18420.1-2001 Standard download decompression password: www.bzxz.net

GB18420.1—2001
All technical contents of this standard are mandatory. This standard is a matching standard with GB18420.2--2001 "Biological Toxicity Test Method for Pollutants in Offshore Petroleum Exploration and Development". The State Oceanic Administration proposed this standard and is responsible for its interpretation. This standard is under the jurisdiction of the National Oceanic Standardization and Metrology Center. The drafting units of this standard are: South China Sea Branch of the State Oceanic Administration and Guangdong Provincial Laboratory Animal Monitoring Institute. The drafters of this standard are: Wu Jinxiao, Huang Ren, Yang Banhua, Wei Shelin, Cheng Shujun, Xue Cheng, and Xin Haihong.
1 Scope
National Standard of the People's Republic of China
Biological toxicity grading fer pollutant frommarine petroleum exploration and exploitationGB18420.1- 2001
This standard specifies the frequency and permissible values ​​of biological toxicity tests for some pollutants used or generated in offshore petroleum exploration and exploitation operations and discharged into the sea in non-sea areas, and puts forward requirements for the test methods and result judgment of samples. This standard is applicable to the biotoxicity test of drilling mud, drilling fluid and production water used or generated in offshore petroleum exploration and development operations and discharged into the sea.
The biological toxicity grading specified in this standard is also applicable to the biological toxicity grading of other marine non-oil exploration incidental pollutants not specified in this standard after appropriately adjusting the permissible toxicity values.
2 Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB18420.2-2001, Test Methods for Biological Toxicity of Pollutants from Marine Petroleum Exploration and Development 3 Definitions
This standard uses the following definitions:
3.1 Pollutants from marine petroleum exploration and development Any substance used or generated in marine petroleum exploration and development operations and then discharged into the sea and may affect the marine ecological environment. 3.2 Biological Toxicity Grading Biological Toxicity Grading According to the degree of impact of marine petroleum exploration and development pollutants on the marine environment, different levels of biological toxicity are divided. 3.3 Marine petroleum exploration and development operations Operation of marine petroleum exploration and development Operations such as exploration, development, production, storage and pipeline transportation of floating oil. 3.4 Drilling mud
Drilling mud is composed of water or oil clay, chemical treatment agent and some inert substances. It is used to lubricate and cool the drill bit, carry drill cuttings, balance formation pressure, stabilize the wellbore and seal the oil well, etc. in oil exploration and development operations. It includes water-based mud and oil-based mud. 3.4.1 Water-based mud water-based mud drilling mud refers to drilling mud made of water, clay and chemical treatment agent. 3.4.2 Oil-based mud oil-based drilling mud refers to drilling mud made of diesel or mineral oil, clay and chemical treatment agent. 3.5 Drilling cuttings drilling cuttings
Drilling cuttings produced by drilling formation operations in offshore oil exploration and development and carried from the bottom of the well with mud. Divided into water-based mud drilling cuttings and oil-based mud drilling cuttings. Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on August 28, 2001 and implemented on March 1, 2002. GB18420.1-2001. 3.5.1 Water-based mud drilling cuttings refers to the drilling cuttings carried by water-based mud. 3.5.2 Oil-based drilling cuttings refers to the drilling cuttings carried by oil-based mud. 3.6 Produced water refers to the water part after oil-water separation during the mining of the formation, including oil formation water, injected water and chemical substances added to promote oil-water separation. 3.7 Allowable value limit value The biological limit value of pollutants allowed to be discharged in the sea area during offshore oil exploration and development. 3.8 Inspection frequency refers to the number of times the biological toxicity inspection of pollutants discharged from offshore oil exploration is conducted in different sea areas. 3.9 Biological toxicity inspection is a method of determining the test results by subjecting organisms to the effects of pollutants under test conditions. 4Www.bzxZ.net
Sea area classification
Sea area classification for biotoxicity inspection of pollutants discharged from offshore oil exploration and development is as follows 4.1-level sea area: Applicable to Liaodong Bay, Bohai Bay, Laizhou Bay, Beibu Gulf, national marine special protection areas, coastal scenic tourist areas and other sea areas within 10 nautical miles from the coast. 4.2 Secondary sea area: Applicable to other sea areas under the jurisdiction of the People’s Republic of China other than the first-level sea area 5 Permissible values ​​of biological toxicity
Offshore petroleum exploration and development operators shall conduct biological toxicity tests in accordance with the provisions of GB/T18420.2-2001 when using or discharging pollutants specified in this standard.
5.1 Drilling mud
5.1.1 Water-based mud
The permissible values ​​of biological toxicity of water-based mud are shown in Table 1. 5.1.2 Oil-based mud
The permissible values ​​of biological toxicity of oil-based mud are shown in Table 2. Table 1 Allowable value of biological toxicity of water-based mud
Water-based mud
Oil-based mud
5.2 Drill cuttings
Sea area grade
Table 2 Allowable value of biological toxicity of oil-based mud Sea area grade
1. Allowable value of biological toxicity, mg/L
20 000
Allowable value of biological toxicity, t/L
The allowable value of biological toxicity of water-based mud drill cuttings and oil-based mud drill cuttings is the same as that of water-based mud, see Figure 1. 5.3 Produced water
The allowable value of biological toxicity test of produced water is shown in Table 3. 116
Test frequency
Produced water
6.1 Drilling mud
The test frequency of drilling mud is shown in Table 4.
Water-based mud
Oil-based mud
GB18420.1—2001
Table 3 Biological toxicity tolerance of produced water
Sea area grade
Table 4 Inspection frequency of drilling mud
Sea area grade
·Secondary/Secondary
First/Secondary
Emission rate, m*/drink
6.2.1 The inspection frequency of water-based mud cuttings is consistent with that of water-based mud, see Table 1. 6.2.2 The inspection frequency of oil-based mud cuttings is consistent with that of oil-based mud, see Table 4. 6.3 Produced water
Inspection frequency of produced water is shown in Table 5
Table 5 Test frequency of produced water
Sea area grade
Cow produced water
Test method
Grade/.Secondary
Emission rate m/d
500 ~5 000
25 C00
Biological toxicity allowable value: mg/1.
Test frequency, times/well
Test frequency
1 time/year
1 time/quarter
1 time/month
Biological toxicity test of pollutants in offshore petroleum exploration and development shall be carried out in accordance with the provisions of GB/T18120.2. 8 Result determination
8.1·Through the dust acoustic test of GB/T18420.2, it is determined that the biological toxicity test result is greater than or equal to the biological toxicity allowable value, which meets the biological toxicity requirements.
8.2 The biotoxicity test result is determined to be less than the permissible value of biotoxicity through the bioacoustic test of (B/T18420.2). It does not meet the biotoxicity requirements and needs to be dealt with by special measures. 112
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