Page 14 - LatAmOil Week 49 2021

LatAmOil NEWS IN BRIEF LatAmOil

test the lower portion of the overthrust sheet surface location subject to required approvals.
UPSTREAM produced with high water cuts averaging 90% The prospects include Royston Deep-1, which
throughout the flow test. We designed the com- will evaluate the entire Herrera section. As an
Touchstone issues update pletion with multiple intervals where produc- exploration well, Royston Deep-1 would seek
tion can be isolated and, in the future if a smaller to establish the base of the oil zone in the inter-
on testing results for tubing string is employed, we can segregate the mediate thrust sheet as well as investigating the
underlying subthrust Herrera reservoir. The sec-
interval to maximise crude oil production.
Royston-1 well, confirming “We are excited to announce this further, large the deep Cretaceous turbidite sands.
Paul Baay, President and CEO, commented: ond exploration prospect, Kraken-1, is targeting
light crude oil discovery oil discovery at Royston-1. The results are the James Shipka, COO, commented: “Trinidad
reason why we find the geology in Trinidad’s continues to provide us with rich hydrocarbon
Touchstone Exploration has provided an update hydrocarbon-charged basin so exciting. This oil opportunities, as is evident from the latest test
on the results of the first production test at the discovery will allow us greater flexibility for the results at Royston. The unique opportunity at
Royston-1 exploration well and provided data pace of development of the project, as we have Royston is that we can design a production pro-
from the second test, both of which confirmed the opportunity to design production facilities file from day one that includes low emissions
separate light oil discoveries. while we are selling crude oil testing volumes. from reinjection of gas and/or produced water
As previously released, the first and deepest “I would encourage stakeholders to view to maintain reservoir pressure and enhance
Royston-1 completion and exploration test was our latest corporate presentation to fully under- recovery factors. We really do have two distinctly
designed to evaluate an interval at the bottom of stand the areal extent of the Royston structure different oil plays to exploit in both the interme-
the well in the intermediate sheet of the Herrera and its potential. The presentation also provides diate and overthrust sheets of the Herrera, and
Formation. The completion spanned a 92-foot a glimpse at the underlying Cretaceous explo- based on analogous pool data, we have a tem-
(28-metre) gross interval (30 feet or 9.1 metres ration opportunity. We now have an exciting plate to optimise production and recoveries.
of net pay) below 10,434 feet (3,180 metres) that development project along with the upside from “Additional exploration opportunities,
was identified on wireline logs as being hydro- the remaining exploration in the subthrust sheet including the Royston subthrust and the under-
carbon-bearing. Following completion and a and the Cretaceous. Once we have completed lying Cretaceous prospects, provide exciting
brief clean-up period to recover load fluid, the the final production test at Royston-1, we intend future drilling inventories to be investigated as
well was shut in and built to a pressure of 3,150 to work to formulate a long term development we work to bring discovered reserves onto pro-
psi at surface (estimated 7,100 psi reservoir pres- plan, which is anticipated to include a number duction. We are in an enviable position of having
sure). The recovered oil was light, sweet crude of wells and associated facilities.’ a multi-year exploration and development pro-
with an average 33-degree API with sampling “Touchstone has now suspended the second gramme ahead of us as we continue to grow in
throughout flow testing indicating an average test interval and is moving uphole to the third Trinidad.”
94% oil cut with some solution gas present but production test, which will complete the upper Touchstone Exploration, December 6 2021
not measured. The configuration of the down- most portion of the overthrust sheet. We have
hole assembly was not optimal for testing light redesigned the third test in anticipation of a liq- PetroTal reports end to
oil given it was designed to test a potential liq- uids test and will be using an idealised 2 7/8-inch
uids-rich gas interval. tubing string to provide the opportunity to con- social protests near its
While we worked to suspend the initial pro- duct a longer-term production test. We have also
duction test to move uphole for the second test, designed the programme such that, if the final oil loading facility
the well continued to flow significant volumes test is successful, the test two and test three inter-
of crude oil at high pressure from the intermedi- vals can be combined to complete a long-term PetroTal has provided an update on production
ate sheet, and heavy weight mud was required to production test from the entire overthrust sheet. at the Bretaña field in Peru. The Company has
control the well before proceeding. During testing, oil volumes are being trucked to announced an end to the social protests near its
We completed our second production test in one of our existing sales facilities. oil loading facility with the Company’s recently
the lowermost portion of the overthrust sheet at “In the future, we envision two additional announced social initiatives contributing to the
depths between 9,878 and 10,148 feet (3,011 to wells to be drilled from the existing Royston peaceful resolution.
3,093 metres) with a gross 270 feet (82.3 metres)
of section perforated (202 feet or 61.57 metres of
net pay). Test two has established a light oil res-
ervoir in the overthrust sheet of the Herrera For-
mation with flow rates of up to 430 bpd of total
fluid observed. Testing indicated light, sweet
crude oil with an average 30-degree API (cor-
rected to 60-degree Fahrenheit), while build-up
testing indicated a bottomhole reservoir pres-
sure of 7,098 psi. Solution gas was also present
on the test but was not measured.
The downhole assembly for the test was
designed for a liquids-rich natural gas test and
again included the use of 3.5-inch tubing which
was not ideal for the actual conditions encoun-
tered following completion. Unlike results from
the first production test, during the second

P14 www. NEWSBASE .com Week 49 09•December•2021