The substantive issues that must be addressed in the classification of oilfield water based on the chemical composition contained in the oilfield water include: ① the chemical indicators of oilfield water and their differences from non oil water; ② Characteristics and differences of oilfield water of similar types. Since the first oilfield water classification scheme was proposed by Pasmel in the United States in 1911、 although there have been multiple modifications and supplements to the oilfield water classification scheme、 it is basically based on the content and combination relationship of Na+、 Mg2+、 Ca2+and Cl、 sO2-4、 HCO-3 as the classification basis. Among various classification schemes、 the B A Uly III In classification is relatively concise and widely used both domestically and internationally. Su Lin believes that natural water、 in terms of its formation environment、 mainly consists of two categories: continental water and seawater. The salinity of continental water is low (generally less than 500 mg/L)、 and its chemical composition has HC03-> SO 2-4> C1 1 and Ca 2+> Na+C1- and Na+/Cl -> 1. The salinity of seawater is relatively high (usually around 35000 mg/L)、 and its chemical composition is characterized by Cl -> SO 2-4> HCO -3 and Na+> Mg 2+Na+and Na+/Cl - (molar ratio)< Characteristics of 1. In mainland freshwater、 calcium bicarbonate dominates and contains sodium sulfate; And sodium sulfate is not present in seawater P>
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China