Young Professionals - Channel Fracturing in Horizontal Wellbores: The New Edge of Stimulation Techniques in the Eagle Ford Formation

Speaker: Alejandro Peña
Speaker Alejandro Peña
Chemistry and Materials Portfolio Manager Schlumberger   Alejandro Peña, based in Sugar Land, Texas, is Schlumberger Well Production Services Chemistry and Materials Portfolio Manager. He earned his BS degree in chemical engineering and was an assistant professor at Universidad de Los Andes in Mérida, Venezuela. After completing his PhD degree ...

Chemistry and Materials Portfolio Manager
Schlumberger





 


Alejandro Peña, based in Sugar Land, Texas, is Schlumberger Well Production Services Chemistry and Materials Portfolio Manager. He earned his BS degree in chemical engineering and was an assistant professor at Universidad de Los Andes in Mérida, Venezuela. After completing his PhD degree in chemical engineering at Rice University in Houston, he joined Schlumberger as a senior chemical engineer. Since then, he has held several field, engineering and operations management positions within Schlumberger in North and South America. Alejandro holds several patents and has authored various publications on stimulation fluid technology.


Full Description
 
The hydraulic channel fracturing technique relies on the engineered creation of a network of open channels within the proppant pack, which provides for highly conductive paths for the flow of fluids from the reservoir to the wellbore. These channels are created through a process that combines fit-for-purpose geo-mechanical modeling, surface equipment controls and fluid and fiber technologies. This paper reports the first implementation of the channel fracturing technique in horizontal wellbores.
 
A section of the Eagle Ford formation (TVD 10,900 - 11,500 ft) in the Hawkville field near Cotulla, Texas was selected for this study. This section comprises mainly limestone with 100 to 600 nD permeability and 7 to 10 % total porosity. The formation requires horizontal laterals with multi-stage hydraulic fracturing for economic production. The channel fracturing technique was evaluated in twelve horizontal wells. Results from thirty eight offset wells treated with conventional techniques (slickwater, crosslinked or hybrid-type treatments) are also reported to compare performance. Non-normalized data from this sample of fifty wells showed hydrocarbon production increases ranging between 32% and 68% in favor of the channel fracturing technique.
 
The Hawkville field comprises a gas-rich section and a condensate-rich section. Reservoir simulations were performed on a sample of four wells located in the gas-rich section and two wells located in the condensate-rich section of the field to generate sets of normalized production data. These simulations accounted for variations in completion strategy, bottom hole flowing pressures and reservoir quality. Normalized production data for the sample of wells located in the gas-rich section of the field showed that the channel fracturing technique increased gas production by 51%. Normalized production data for the sample of wells located in the condensate-rich section of the field indicates increase in condensate production by 46%. Results from these history matches are consistent with the hypothesis that the channel fracturing technique enabled higher production by two concomitant mechanisms: increased area of contact with the reservoir and enhanced connectivity between the reservoir and the wellbore through highly conductive channels. Positive features that were also observed during this campaign such as the elimination of near-wellbore screen-outs and significant reductions in proppant and water consumption are also summarized and discussed.
 
 
 
 
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PARKING
 
The Petroleum Club provides valet parking service on the Milam Street side of the EXXON-MOBIL Building.  Parking is also available at public parking lots in the area for a fee in the $5 - $7 range.
Organizer Kris Pitta

When?

Tue, Jan. 17, 2012
11:30 a.m. - 1 p.m. US/Central

How Much?

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Where?

Petroleum Club of Houston
800 Bell St. 43rd Floor
Houston, TX 77002

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