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Brigham Exploration Announces Record North Dakota and Montana Bakken Completions and Provides an Operational Update


April 13, 2011 - Austin, TX

Brigham Exploration Company (NASDAQ: BEXP) announced that its Sorenson 29-32 #2H Bakken well produced a North Dakota Bakken record 5,330 barrels of oil equivalent during its early 24-hour peak flow back period. Brigham also announced that its Johnson 30-19 #1H Bakken well, which is located in Richland County, Montana, produced a Montana Bakken record early 24-hour peak flow back rate of approximately 2,962 barrels of oil equivalent. Brigham announced the completion of four additional North Dakota Bakken wells and, as a result, has completed 56 consecutive long lateral high frac stage wells in North Dakota at an average early 24-hour peak flow back rate of approximately 2,884 barrels of oil equivalent. Finally, Brigham provided an update on its drilling and completion activities in the Williston Basin.

Record North Dakota Bakken Well

Brigham announced that the Sorenson 29-32 #2H produced a North Dakota Bakken record 5,330 barrels of oil equivalent (4,661 barrels of oil and 4.01 MMcf of natural gas) during its early 24-hour peak flow back period. The Sorenson 29-32 #2H, which is located in Brigham's Ross project area in Mountrail County, North Dakota, supplants Brigham's Sorenson 29-32 #1H as the record initial rate Bakken well. To date, based on publically available information, Brigham has the four highest initial rate Bakken wells and seven of the top 10 initial rate Bakken wells in the Williston Basin. The Sorenson 29-32 #2H represents Brigham's first infill well completion in its Ross project area and was drilled, on average, approximately 1,720' from the Sorenson 29-32 #1H well, which was completed in April 2010. The Sorenson 29-32 #2H was completed with 38 frac stages.

The Sorenson 29-32 #2H and the Cvancara 20-17 #1H, which produced approximately 4,402 barrels of oil equivalent during its early 24-hour peak flow back period, were the first wells drilled and completed using Brigham's smart pad design. The smart pad design allows wells to be drilled from the same pad and simultaneously fracture stimulated. It is estimated that approximately 10% to 20% in cost savings can be achieved with implementation of smart pad drilling and completion techniques.

Record Montana Bakken Well

Brigham announced that the Johnson 30-19 #1H, which is located in Richland County, produced approximately 2,962 barrels of oil equivalent (2,684 barrels of oil and 1.67 MMcf of natural gas) during its early 24-hour peak flow back period. The well was completed with 36 fracture stimulation stages, and based on publically available information, is the record initial rate Bakken well in Montana.

North Dakota Operated Well Result Update

Brigham has now completed 56 consecutive long lateral high frac stage wells in North Dakota with an average early 24-hour peak flow back rate of approximately 2,884 barrels of oil equivalent. The following table updates Brigham's North Dakota long lateral, high frac stage well results since its last operational update:


Early 24-Hour Peak Flow Back
Rate
------------------------------
Barrels of
Oil
County, Working Crude Natural Equivalent
Well State Objective Stages Interest Oil (1) Gas (2) (3)
--------- --------- ------ -------- -------- ---------- ----------
Sorenson
29-32 Mountrail
#2H , ND Bakken 38 95% 4,661 4.01 5,330
Cvancara
20-17 Mountrail
#1H , ND Bakken 36 79% 3,909 2.96 4,402
Brown 30- Mountrail
19 #1H , ND Bakken 37 78% 2,789 3.12 3,309
Hospital
31-36 Mountrail
#1H , ND Bakken 33 89% 1,276 1.03 1,449
Afseth Mountrail
34-3 #1H , ND Bakken 38 44% 1,155 0.67 1,267
5 Well
Average 3,151
(1) Barrels of crude oil.
(2) Millions of cubic feet of natural gas (MMcf).
(3) Converted to barrels of oil equivalent using the ratio of six Mcf of
natural gas per barrel of crude oil.

Williston Basin Operated Drilling and Completion Update

Brigham's accelerated development of its acreage in North Dakota and Montana is proceeding with four operated rigs drilling in Rough Rider, two operated rigs drilling in Ross and one operated rig drilling in Montana. Brigham's eighth dedicated operated rig is expected to arrive in May.

In North Dakota, Brigham will spud its second Three Forks well in its Rough Rider project area in Williams County before the end of the month. An additional Three Forks well is anticipated to be spud in early summer in McKenzie County.

In Montana, Brigham recently completed drilling operations on the Beck 15-10 #1H, which is located in Roosevelt County, and will drill three consecutive additional wells in Montana, two of which are in Roosevelt County and one in Richland County. Later this month, Brigham will begin the fracture stimulation of the Voss 21-11H, which was purchased from another operator who drilled and completed the well in August 2007 with a single fracture stimulation. Brigham successfully removed the old liner from the wellbore and replaced it with a new liner with swell packers. Brigham expects to use 28 fracture stimulation stages to complete the Voss 21-11H.

Brigham currently has two wells flowing back, two wells fracing and 15 wells waiting on completion.

Later this month, Brigham expects to add additional fracture stimulation capacity thereby providing access to two fully dedicated frac crews focused on completing Brigham operated horizontal wells in the basin. At that time, Brigham estimates that it will be capable of fracture stimulating and bringing on line to production a minimum of eight wells per month due to the efficiencies gained by simultaneous stimulations.

Management Comments

Bud Brigham, the Chairman, President and CEO, commented, "Our team continues to deliver outstanding operational results with record setting Bakken wells in North Dakota and Montana. The impressive results of the Sorenson 29-32 #2H, which was drilled approximately one year after the Sorenson 29-32 #1H, clearly demonstrates the substantial net asset value attributable to our infill drilling locations."

Bud Brigham continued, "The extremely positive results of our Johnson 30-19 #1H, which is located in Richland County, further de-risks part of our Montana acreage for the Bakken. Our de-risking should continue based on the results of the fracture stimulation of the Voss 21-11H, which is expected to occur later this month. Plans are to continue to work towards de-risking larger parts of our Montana acreage by drilling a total of four additional wells over the next several months."

Bud Brigham concluded, "Importantly, our acceleration in the Williston Basin continues to be on schedule as we expect to begin operating two fully dedicated frac crews this month and expect our next dedicated operated rig to arrive in May. Our core acreage position combined with our operational expertise and accelerated development is anticipated to set us up for a very positive 2011 in terms of net asset value growth. Looking ahead, given the remarkably consistent results associated with our 56 consecutive long lateral high frac stage completions in North Dakota, it's likely that we will no longer release individual well early 24-hour peak rates, except in certain circumstances, such as where results provide specific information with respect to de-risking our non-core acreage and the resulting net asset value accretion."

About Brigham Exploration

Brigham Exploration Company is an independent exploration, development and production company that utilizes advanced exploration, drilling and completion technologies to systematically explore for, develop and produce domestic onshore oil and natural gas reserves. For more information about Brigham Exploration, please visit our website at www.bexp3d.com or contact Investor Relations at 512-427-3444.

Forward-Looking Statement Disclosure

Except for the historical information contained herein, the matters discussed in this news release are forward-looking statements within the meaning of the federal securities laws. Important factors that could cause our actual results to differ materially from those contained in the forward-looking statements early initial production rates which decline steeply over the early life of wells, particularly our Williston basin horizontal wells for which we estimate the average monthly production rates may decline by approximately 70% in the first twelve months of production, our growth strategies, our ability to successfully and economically explore for and develop oil and gas resources, anticipated trends in our business, our liquidity and ability to finance our exploration and development activities, market conditions in the oil and gas industry, our ability to make and integrate acquisitions, the impact of governmental regulation and other risks more fully described in the company's filings with the Securities and Exchange Commission. Forward-looking statements are typically identified by use of terms such as "may," "will," "expect," "anticipate," "estimate" and similar words, although some forward-looking statements may be expressed differently. All forward-looking statements contained in this release, including any forecasts and estimates, are based on management's outlook only as of the date of this release, and we undertake no obligation to update or revise these forward-looking statements, whether as a result of subsequent developments or otherwise.

Contact:
Rob Roosa
Director of Finance & Investor Relations
(512) 427-3300

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