Information notice about the situation in the Kalamkas field
JSC "Mangistaumunaigas" reports the following about the situation at well No. 8237 at the Kalamkas field:
As far as is known, on May 22, at 6:20 PM, an intensive show of water and gas (mud volcano) occurred in the area of well No. 8237. The reoccurrence of the mud volcano was expected, and experts were ready for such a scenario: the well is controlled, equipped with blowout equipment, a kill manifold and choke valves. The area of the mud volcano varied from 1 square meter with a height of 30-40 cm. up to 10 square meters with a height to one meter.
Emergency response center was established to contain water and gas shows and to ensure safety: a perimeter was fenced off with security posts, access to the danger zone for people not directly involved in the elimination of the accident was restricted; high earth walls were built around the mud volcano (filled in with marl); samples of gas and water were taken from the mud volcano, and probable sources (gas-bearing and water-bearing formations) were subsequently determined by the composition of gas and water; injection and gas wells that can affect water and gas shows were identified and stopped.
As a result of the measures taken on May 26 at about 8:40 pm water and gas shows at the emergency well No. 8237 was contained.
After the first accident that occurred this March with the fire of a mud volcano, a task force was established, which included experts from the R&D Institute of Kazmunaygas, JSC Mangistaumunaygas and independent experts. This task force identified an inspection area around the emergency well No. 8237 on an area of 4 square kilometers. In this area, 98 wells were inspected, including active, inactive and abandoned ones. The purpose of the inspection is to determine the source of gas and water shows, as well as the possible migration of production induced gas from gas-bearing and water-bearing formations of the field.
To date appropriate measures are being taken to prevent further complications during the drilling and operation of the entire field. Before the measures are implemented gas and water shows may occur but this is an expected and controlled process.