Crescent Pointin(CPG) Q2-tiedotteesta:
In early third quarter, the Government of Saskatchewan provided technical approval for the first of four Bakken waterflood units proposed by the Company. This approval is a significant milestone in the development of the waterflood program in the Viewfield Bakken resource play. Overall production performance from water injection patterns in the Viewfield Bakken resource play continues to exceed Crescent Point's expectations. Currently, water injection support is positively affecting more than 5,000 boe/d of the Company's Bakken production, which has resulted in shallower declines and contributed to Crescent Point's record first and second quarter 2013 results. In addition, the Company's independent engineering firm has completed preliminary studies on existing waterflood patterns with sufficient history and have found ultimate long-term recovery factors up to 30 percent are achievable in those areas. The independent engineers will be including results from these studies, where appropriate, in their year-end reserves assignments.
Legacy Oil & Gasin(LEG) Q2-tiedotteesta:
Waterfloods At Taylorton, the Company has continued to observe improved waterflood response in the Bakken Formation in both the original and expanded pilot areas. A total of five wells have been converted to water injection, expanding the pilot area to cover portions of four sections.
At Heward, the pilot Bakken waterflood project initiated in December 2011 continues to demonstrate waterflood response as the oil production rate in eight offsetting wells has increased since the commencement of the pilot. The Company is rapidly expanding the waterflood pilot project from three injectors with four additional water injector conversions anticipated in the third and fourth quarter of 2013.
At Frys/Antler, a pilot waterflood initiated in December 2012 in the Torquay Formation has shown early signs of response. Approval has been received to expand the pilot to the offsetting sections. The analogous field at Sinclair, located immediately east of Frys/Antler now has 34 sections under waterflood and has seen oil production rate increases ranging from 50 to 100 percent after waterflood response.
At Pierson, applications are being prepared for two pilot waterfloods, with anticipated approvals late in the third quarter of 2013. The Spearfish Formation has been successfully waterflooded over the past 20 years in six different project areas that are good analogs to Legacy's proposed pilot.
Legacy has made application at Steelman for its first water injector and is working on additional water injection conversions. The Midale Formation has been successfully waterflooded for more than 50 years in the offsetting Steelman units.
Tulokset näyttävät yhä positiivisilta varsin positiivisilta, mutta kuinka paljon lisää öljyä vedellä saa talteen loppujen lopuksi on vielä suuri kysymysmerkki, muodostelmaan pumpattava vesi, kun voi parin vuoden kuluessa lähteä kulkemaan samoja "kanavia" pitkin injektio-kaivosta nosto-kaivoon.
CPG on maininnut useampaan otteeseen, että watefloodien hyöty ei rajoitu korkeampaan talteenottoasteeseen, vaan melkein yhtä merkittävä vaikutus on reservien tuottamisen nopeutumisella.
EOG:llä on tai ainakin oli Bakken waterflood-pilotti Pohjois-Dakotassa, mutta tuosta ei ole näkynyt juurikaan uutisia melkein vuoteen.
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