Reply to Mole Valley14 Jun 2018 08:46
Reply to Mole Valley issues raised at planning meeting has resulted in a host of documents being added prior to the SCC meeting next month.
Issues Raised by Mole Valley DC
It is the intention of Angus Energy plc to evaluate BRX4X without recourse to acid treatments however, should the
well not flow immediately, then this would be considered. As you may be aware, oil and gas operators have used
acid treatment (acidizing) to improve well productivity for almost 120 years and the technique is used frequently
for reservoirs in limestone formations that will respond to acid.
The approach used typically is to carry out an acid wash of the surface of the reservoir rock by circulating acid in the
well. The acid used is hydrochloric acid as this reacts with the limestone, with a typical solution of 15% acid in water
being used, which is similar to the concentrations used for drain cleaning. After the treatment, the acid will have
reacted with the limestones and the products of the reaction are water, calcium chloride and a small amount of
carbon dioxide.
Following the acid treatment no hazardous wastes are produced. Should not all the acid react in the well the water
coming back to surface is treated with calcium carbonate to make sure it does. There is therefore no hazard in the
returning chemicals. The acid pumped into the well is of a strength used in routine drain cleaning and other
applications and would be handled in accordance with best practice. It should be stated that Angus Energy is
compliant with all health, safety and environmental best practice.
With regard to emissions from the flare stack, as set out above the Applicant wishes to make clear that the flare
stack is not for routine use. It is there to enable small quantities of gas to be handled safely during shut down of the
facility and, under normal operations all the gas will be used in the generator or the process heater and no gas will
be flared.
Sign In
Follow the stocks
