Swift Energy Company 2002 Annual Report

 

New Zealand Core Areas: Balancing domestic and international opportunities

 

 

 

Swift seeks core areas of opportunity where it can effectively apply its competitive strengths: production operations, development drilling, and innovative applications of technology. Internationally, Swift is focusing these strengths on its TAWN and Rimu/Kauri core areas in New Zealand.
 

As oil and natural gas resources in the United States mature, a key component of Swift Energy’s competitive strategy is balancing opportunities at home and abroad.

In 2002, Swift recorded a major milestone in its international activities with its first commercial oil and gas production in New Zealand. The Company’s New Zealand properties produced 15.5 Bcfe of oil, natural gas, and natural gas liquids in 2002, which was 31% of the Company’s total production for the year. With these levels of production and cash flow, Swift’s New Zealand venture has become a self-sufficient operating entity.

Swift’s New Zealand production comes from the Company’s two core operating areas in the Taranaki Basin of the country’s north island—the TAWN Area and the Rimu/Kauri Area. The Company’s proved reserves in these areas increased 53% in 2002 to 155 Bcfe, replacing 444% of their 2002 production even after including the full effect of a net downward reserves revision of approximately 21 Bcfe. At year-end 2002, New Zealand reserves constituted 21% of the Company’s total reserves and consisted of 56% natural gas, 34% crude oil, and 10% natural gas liquids.

 

TAWN CORE AREA. With the acquisition of the TAWN Area in early 2002, Swift Energy added a second core area of operation in New Zealand and immediately became a significant producer in the country’s oil and natural gas industry. For the 12 months ending June 2002, the TAWN Area accounted for approximately 4% of New Zealand’s oil production and 5% of its natural gas production as reported by the New Zealand Ministry of Economic Development.

TAWN reserves, which are approximately 80% natural gas, were 66.9 Bcfe at year-end 2002, representing 8.9% of Swift’s total oil and gas reserves.

Strategically located approximately 17 miles north of Swift’s Rimu/Kauri Area, the TAWN Area includes four producing fields with 19 wells (including two service wells), hydrocarbon-processing facilities with excess capacity, and pipelines connecting the fields and facilities to export terminals and interior markets. The four fields include the Tariki and Ahuroa fields, which both produce from the Tariki formation, and the Waihapa and Ngaere fields, which both produce from the Tikorangi formation. The name TAWN is an acronym derived from the first letters of the field names.

In September 2002, Swift increased its ownership from 96.76% to 100% in all the TAWN petroleum mining licenses with the acquisition of interests held by a subsidiary of Bligh Oil & Minerals N. L. The transaction also included Bligh’s interests in two processing plants, the Waihapa Production Station and the Tariki Ahuroa Gas Plant, as well as associated pipelines in which Swift already had a majority interest.

The TAWN processing facilities and oil and gas pipelines, together with other infrastructure in the area, all of which have current excess capacity, provide synergies with Swift’s nearby Rimu/Kauri Area.

The current capacity of the processing facilities is up to 15,000 barrels of oil and condensate per day and approximately 40 million cubic feet (MMcf) of natural gas per day. Natural gas processing can be increased significantly with additional compression as needed.

A 32-mile (8-inch diameter) oil export line runs from the Waihapa Production Station to the Omata Tank Farm at New Plymouth, where oil export facilities allow for sales into international markets. A 32-mile (8-inch diameter) natural gas pipeline runs from the processing plants to the Taranaki Combined Cycle Electric Generation Facility near Stratford and on to the New Plymouth Power Station.

RIMU/KAURI CORE AREA. During 2002, Swift increased its interests in the exploration permit (PEP 38719) covering the 50,000 net-acre Rimu/Kauri Area to 100% from 90% following two separate acquisitions. In March, the Company purchased the 5% interest in the permit held by a subsidiary of Antrim Energy Inc. of Canada, and in September it purchased the remaining 5% of the permit held by a subsidiary of Bligh Oil & Minerals N.L.

Early in 2002, the New Zealand government awarded Swift a petroleum mining permit (PMP 38151) covering 5,524 acres within the Rimu/Kauri exploration permit to fully develop the area around the Rimu-A1 discovery well for a primary term of 30 years. With its purchases from its partners, Swift now has a 100% interest in this permit.

Swift also expanded its interests in areas lying adjacent to the Rimu/Kauri Area in 2002 when the New Zealand government awarded Swift two additional exploration permits (PEP 38756 and 38759) to the north and east of the Rimu/Kauri permit (PEP 38719). In addition, the Company increased its interests from 7.5% to 15% in a petroleum exploration permit (PEP 38716) located between the Rimu/Kauri Area and the TAWN Area as part of its acquisition from one of its Rimu/Kauri partners.

Rimu Production Station. Another milestone was reached in the development of the Rimu/Kauri Area in 2002 with Swift’s commissioning of its Rimu Production Station. During the construction phase, New Zealand-U.S. exchange rates were at their lowest levels in over 15 years, reducing the cost of the facility for Swift.

Swift began commercial production from the facility in May 2002, less than two and a half years after the Company’s initial Rimu discovery. This set a record in New Zealand for this type of facility as companies have typically needed four to eleven years to initiate production following a discovery of this type.

The station is designed to handle 3,500 barrels of oil and 10 MMcf of natural gas per day (about 31 MMcfe per day) during its first phase of operation. With minimal additional capital, the plant’s capacity can be more than doubled to 8,250 barrels of oil and 20 MMcf of gas per day (approximately 70 MMcfe per day) with options for even further expansion.

Operating Activities. Swift drilled five wells in the Rimu/Kauri Area during 2002—three development wells and two exploratory wells—bringing the total number of wells drilled in the area to 13 since operations began in 1999.

However, production results for 2002 were disappointing because of formation damage found to have occurred during drilling and completion. An evaluation conducted by Integrated Reservoir Solutions Division of Core Laboratories, an international company specializing in reservoir analysis, found that the water-based fluids used during drilling and completion had caused formation damage in the Tariki sandstone surrounding the well bores. The damage, which reduced permeability, included predominantly water blockage, as well as fines migration and clay swelling.

The study, which was completed in early 2003, recommended that Swift cease using water-based fluids and change the pressure levels used during perforation. The study also specified remediation activities for existing well bores, such as CO2 injections.

Wells believed to have been affected by formation damage include all three development wells drilled in 2002: the Rimu-A2A, which was a sidetrack of the Rimu-A2 and was drilled to a depth of 13,225 feet to the Upper Tariki sand; the Rimu-B3A, which was an unsuccessful sidetrack to the Rimu-B3 and was drilled to a depth of 15,853 feet to the Upper and Lower Rimu limestones; and the Kauri-A3, which was drilled to a depth of 4,921 feet to further evaluate and delineate the shallow Manutahi sands.

Swift’s first deep exploratory well in the area, the Kauri-A1, which was drilled early in 2002 to a depth of 14,764 feet to the Kauri and Upper Tariki sands, also appears to have been affected. Before the second exploratory well, the Kauri-A4, was spudded in June, the Company’s own preliminary analysis had indicated that oil-based drilling fluids might improve the well’s productibility. As a result, the Company drilled the Kauri-A4 well with an oil-based drilling fluid. The well reached a total measured depth of 15,252 feet (true vertical depth of 13,277 feet) and intersected several of its primary targeted intervals, including the Kauri sands, the Lower Tariki sand, and the Cretaceous sands. It also intersected a targeted seismic anomaly that had been identified just above the Kauri sands and intersected in the Kauri-A1 well. While of excellent sand quality, the lower sands in the Kauri-A4 well were deemed noncommercial, and the well was tested in the Kauri sands found at a depth of 7,879 feet, where it flowed naturally at rates that averaged approximately 2.1 MMcfe per day. The well will be hydraulically fractured in the Kauri sands using the recommended procedures during the first half of 2003.

Other activities scheduled for the first half of the year include drilling a well in the shallow Manutahi sand (the Kauri-F1) using the new procedures and conducting remediation efforts with CO2 injection in the Tariki sand in the Rimu-A2A well. In addition, artificial lift operations will begin on the Kauri-A2 and A3 following the installation of pumping units. Based upon the outcome of these efforts, additional drilling in the Rimu/Kauri Area may be undertaken during the second half of the year.

Swift’s Waihapa Production Station and its Tariki Ahuroa Gas Plant process oil and gas from the Company’s TAWN Area, which supplied approximately 4% of New Zealand’s national oil production and 5% of its natural gas production for the 12-month period ending June 2002.

 

The Rimu Production Station began commercial production in May 2002. Swift built the facility in less than two and one-half years, compared to the four to eleven years previously taken by others to initiate production elsewhere in New Zealand.

 

MARKETING. Swift’s production from the TAWN Area and Rimu/Kauri Area is marketed under several arrangements. During 2002, Swift’s average price received in New Zealand was $24.31 per barrel for oil, $11.06 per barrel for natural gas liquids, and $1.32 per Mcf for natural gas. Over the long term, as natural gas production declines at New Zealand’s largest natural gas field, the Maui Field, price appreciation for natural gas in New Zealand is expected to occur. Production from the Maui Field could reach depletion as early as 2007, according to various industry and government analyses.

Favorably impacting revenues from oil and gas sales are the rates of New Zealand’s government royalties as compared to the U.S. equivalent. For the TAWN Area, Swift pays a 10% royalty on net sales revenues after allowable deductions. For the Rimu/Kauri Area, it pays a 5% ad valorem royalty. In the United States, Swift’s production is covered by both severance and ad valorem taxes of 9% to 12.5% and landowner royalties of 12.5% to 25%.

Swift generally sells its New Zealand oil production under short-term contracts lasting one year or less, using a reference price of APPI (Asian Petroleum Price Index) Tapis, an internationally recognized crude oil index that is quoted at least weekly. The price is adjusted for various fees and premiums.

Natural gas from the TAWN properties is sold under several contracts, including a long-term contract to Contact Energy Limited. At year-end 2002, 69% of TAWN’s proved natural gas reserves were associated with this long-term natural gas contract. Swift has negotiated for any excess deliverability to be sold at current market rates.

Swift’s natural gas production from the Rimu/Kauri Area is sold under an agreement with Genesis Power Limited, a New Zealand state-owned enterprise, to provide 40 petajoules (approximately 38 Bcf) of natural gas over a 10-year period that began in 2002.

LONG-TERM OUTLOOK. Swift made significant progress in its New Zealand operations in 2002 with the start of commercial production, the acquisition of the TAWN Area, the completion of the Rimu Production Station, and the increased understanding of the complexity of the Tariki reservoir.

With its 100% ownership of interests in the TAWN Area and the Rimu/Kauri Area and their close physical locations, the Company’s long-term view is that the fields and infrastructure in these two core areas will eventually be integrally connected. This consolidated position will be one more step in Swift developing a significant presence in New Zealand and increasing its synergies in the Taranaki Basin. In addition, both the TAWN Area and the Rimu/Kauri Area offer on-going exploration potential as discussed on pages 16-17 of this report.

 


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