Drill Cuttings and Drilling Fluids Sample Clauses

Drill Cuttings and Drilling Fluids. (a) There shall be no discharge of oil based drilling fluids, other than low toxicity and biodegradable drilling fluids. (b) There shall be no discharge of drill cuttings generated in association with the use oi oil based drilling fluids, invert emulsion drilling fluids, or drilling fluids that contain radiation, if any, waste engine oil, cooling oil, gear oil, or other oil based lubricants, other than cuttings generated in association with the use of low toxicity and biodegradable drilling fluids. (c) There shall be no discharge of drill cuttings or drilling fluids if the maximum chloride concentration of the drilling fluid system is greater than four (4) times the ambient concentration of the receiving water. (d) Prior to the start of the drilling programme, a drilling mud system will be designed and laboratory tested under the US EPA, 96-hour acute toxicity test using mycid shrimp or other indicator organisms of the Caspian Sea agreed between Contractor and SOCAR. Those muds biodegradable and of low toxicity will be authorised for discharge during the drilling programme. (e) During drilling operations, mud samples will be collected periodically to determine toxicity using procedures established for the Caspian Sea. (f) The composition of the mud system may be altered as necessary to meet changes in the drilling operations. The modified mud system may be discharged if it has been shown to meet the above limits on oil, salinity and toxicity.
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Drill Cuttings and Drilling Fluids. There shall be no discharge of oil based drilling fluids, other than low toxicity and biodegradable drilling fluids.
Drill Cuttings and Drilling Fluids. (1) An inventory of drilling fluids additives and their volumes or mass added to the drilling fluid system will be maintained for each well. (2) Drilling fluid properties, including volume percent oil and concentration of chlorides, will be monitored daily for each well. (3) The estimated volume of drill cuttings and drilling fluids discharged shall be recorded daily and reported monthly to the appropriate environmental authority.

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