Kiliwani North operator Aminex has said a workover of the wellbore offers more immediate gains in terms of both production potential and reserves recovery as compared to the earlier preferred surface compression facilities which remains an option.
This follows a detailed simulation study on the Kiliwani North field based on a history match of past reservoir performance undertaken since the end of December which showed believes that an opportunity may exist to access unperforated reservoirs capable of recovering additional gas volumes.
Aminex has already identified equipment has already been identified in country and pending further work on plant specifications and appropriate government approvals, and intends to re-enter the well and perforate the untapped gas zone.
“It is encouraging that the technical work recently completed shows that further gas production and reserves can be accessed through a recompletion of the existing well and we look forward to confirmation of the operators plans as they firm up,” Neil Ritson, Solo’s Chairman, commented.
Due to inlet pressure limitations and the presence of fluid build-up within the wellbore, the well has been produced infrequently in order to maintain basic plant operations.
In November Aminex reported that production from the Kiliwani North-1 well (KN-1) was fluctuating below 1 million standard cubic feet per day due to low reservoir pressure and inlet pressure restrictions of the gas processing plant necessitating some intevention.
The Kiliwani North-1 well had averaged approximately 15 MMcfd during the first six months of 2017, a drop from July 2016 when the company reported that gas production from the Kiliwani North-1 well in Tanzania reached 30 mmcf per day (approximately 5,000 barrels of oil equivalent per day) with stable pressure recordings at that rate.
Aminex has 54.575% of the Kiliwani North Development Licence through its 100% owned subsidiary Ndovu Resources Limited alongside RAK Gas LLC 23.75%, Bounty Oil & Gas NL 9.5%, Solo Oil 7.55% and TPDC 5%