Some Regulations on the Use of Non-Aqueous Drilling Fluids

13:05, 10/07/2024

Circular 22/2015/TT-BTNMT regulates environmental protection in the use of drilling fluids; waste management and environmental monitoring for offshore petroleum activities issued by the Minister of Natural Resources and Environment on May 28, 2015.

Illustrative image (Source: Internet)

Circular 22/2015/TT-BTNMT stipulates that non-aqueous base drilling fluid is to be used when drilling well sections that face technical difficulties, where water-based drilling fluid cannot be applied. This includes one of the following cases:

- Drilling complex stratigraphic segments, which are expected to incur significant risks such as easily collapsing stratigraphic sections, stuck drill pipes, loss of drilling fluid, and well blowouts;- Handling emergencies during drilling operations;- Stimulating the flow.

Additionally, some other regulations on the use of non-aqueous base drilling fluid are specified as follows:

- The General Department of Environment shall review and grant permission for the use of non-aqueous base drilling fluid for specific cases.

- The General Department of Environment shall establish, publicize, and update the list of approved non-aqueous base drilling fluids on the online portal of the General Department of Environment.

- Oil and gas organizations using non-aqueous base drilling fluid must comply with the plan approved by the state environmental management agency and send a report on the usage process to the General Department of Environment within 30 days after the completion of the usage period.

For details, see Circular 22/2015/TT-BTNMT, effective from July 20, 2015.

Le Hai

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