Range Resources targets Trinidad oil production growth
Friday, May 17, 2013 by Bevis Yeo
Range Resources (ASX: RRS) is poised to grow its Trinidad oil production with operations to complete a well that intersected one of the thickest Lower Forest pay sections encountered to date.
The QUN 141 well is currently being completed with logs indicating 160 feet of gross oil pay while drilling is currently underway on the QUN 142 well that directly to east and expected to encounter the same well-developed oil pay.
Further development on the Lower Forest pay includes the evaluation of a possible re-activation of the QUN 16 well, which previously produced up to 145 barrels per day of oil during a one week test.
QUN 16 well was drilled and tested in 1942 and logged thick oil sands that correlate with the Lower Forest reservoirs being completed by the company about half a mile to the west.
Re-activation of the QUN 16 well will be performed using one of the company’s production rigs, which have recently returned to operation following the receipt of necessary approvals.
This has the potential to not only add new reserves and production but also extend the Lower Forest trend to the east of the QUN 16 well and establishing a large area for low-risk infill drilling between the well and the current Lower Forest development at a relatively modest cost.
In addition, Range is expecting several production rigs to be placed back into operation within the week to begin remedial work on up to 20 existing wells, which could increase production by an additional 100 barrels to 150 barrels per day of oil.
Depending on the type of workover required, individual wells are estimated to require an average of 1-2 days to perform the necessary remedial work.
Lower Cruse Formation Drilling
Range continues to make steady progress in drilling the MD 248 well towards its target depth of 6,500 feet.
MD 248 well is currently at a depth of 5,425 feet and had encountered a ‘drilling break’ along with multiple gas shows requiring mud to be conditioned properly.
The shows are encouraging as they are usually associated with oil sands consistent with the Morne Diablo field.
Middle Cruse Formation Drilling
The company is currently preparing a completion procedure designed to maximise recovery from the multiple pay zones encountered by its QUN 135 well in the Lower Forest, Upper Cruse, and Middle Cruse sections.
This could include the possibility of perforating and producing the Upper Cruse pay zone while evaluating potential stimulation of the Middle Cruse.
Range is still assessing the applicability of formation stimulation in QUN 135, including a possible mini hydraulic fracture stimulation, which has been successful in other fields in Trinidad.
If successful, low-cost stimulation technology could lead to higher initial production rates and greater recoveries from the established producing horizons.
Based on historical production rates seen from the Middle Cruse formation, a successful well at this location could potentially have initial production rates of up to 200 barrels to 300 barrels per day of oil, which could be further enhanced with mini-hydraulic fracture stimulation techniques.
Other developments
Range is in the final planning stages of a new development program in the South Quarry field following the recent receipt of approvals for the construction of four initial well pad locations.
Operations will commence with site construction and fabrication of equipment to support the drilling, which is expected to start towards the end of June or early July.
Previous drilling campaigns have yielded higher than average rates and recoveries due to increased geopressure in the area.
Given the proximity to established production, the South Quarry program has a high probability of boosting production, while extending the producing trends and establishing multiple locations for future drilling.
Range has also received environmental approvals to proceed with the deepening of six wells at its Beach Marcelle licence.
It will now mobilise a production rig to test and prepare existing well bores in anticipation of deepening those wells to recover Proved Undeveloped Reserves, estimated at up to 90,000 barrels of oil per well at costs significantly lower than drilling and completing new wells.
New Technology
Range continues to evaluate exploration, drilling, completion, and production technology to maximize recovery of oil and gas from its producing areas at the lowest cost possible.
This includes mini-fraccing as well as horizontal drilling, which could increase initial production rates by between 5 and 10 times in suitable reservoirs.
Guatemala
Range associate Citation Resources (ASX: CTR) is preparing to test the two most prospective oil bearing reservoir units at the Atzam-4 well in Guatemala.
Flow testing of the C13 and C14 carbonates, which demonstrated strong oil shows during drilling, is expected to start within two weeks.
Some potential pay zones in the C16 and C17 sections will also be tested.
Citation had made the decision to test the two units instead of carrying out further testing of the Lower C17/Upper C18 carbonates that had experienced unexpected gas production following a technical review.
In addition, the operator plans to install a gas separator on the electrical submersible pump for further evaluation of the oil production potential from Lower C17/Upper C18 after testing of C13 and C14 is completed.
These had produced oil at an initial rate of 50 barrels per day with limited ESP performance due to gas production.
Ralph E Davis and Associates (RED) have estimated that Atzam-4 holds Probable Reserves of 2.3 million barrels of oil based on the results of the logging and the analytical work completed by Schlumberger.
Range has a 19.9% strategic interest in Citation, which holds 70% in Latin American Resources (LAR), as well as a direct 10% interest in LAR.
LAR in turns holds between 80% and 100% in the two oil and gas development and exploration blocks in Guatemala.
Analysis
Range Resources continues to make progress in its goal of increasing oil production from its Trinidad operations and looks set to pen in a marked production increase in the short term.
With the proposed merger with International Petroleum, this will place the combined company in an even stronger position with strong production, reserves and exploration upside.