Flowzan® Biopolymer Case Histories


Case History #1 - Qatar
A major operator in Qatar switched to Flowzan® Biopolymer from two other well-known dispersible biopolymers. The operator reported a 20% reduction in biopolymer usage to obtain the same mud properties needed in their drilling program. The result was not only a reduction in cost of product, but also a reduction in logistics cost, and its performance resulted in an overall reduction in total mud cost. The mud company has continued the use of Flowzan® Biopolymer in Egypt, Qatar, and Syria.  


Case History #2 - Alberta Canada
Drilling a well near Grande Prairie, Alberta, a major operator needed to increase mud viscosity immediately. While drilling ahead with water, orders came in to cut an unplanned core. Using Flowzan® Biopolymer with its unique dispersion chemistry, the mud company was able to attain the desired rheology in one circulation. The normal hydration rate for untreated or glyoxal-coated xanthan would have been considerably longer. The money saved in rig time alone was considerable. After successfully recovering the core, the mud company isolated the Flowzan® Biopolymer/Drispac® Polymer coring fluid and resumed drilling with water. The rig crew mixed bentonite with the isolated fluid and used it to mud up when they reached the expected mud-up depth.


Case History #3 - Louisiana
A production company used Flowzan® Biopolymer in a 3% KCl brine to clean up a wellbore after the well had "sanded out" during a sand frac in Hell Hole Bayou, Louisiana. The decision to use Flowzan® Biopolymer was based on a return permeability study done by a major mud company showing that Flowzan® Biopolymer did not damage the producing formation.

The objective was to successfully wash 900 ft of proppant sand inside the 3½" tubing and 123 ft of proppant sand in the 7" casing using 1.5" coil tubing. The brine was viscosified with 1 ppb Flowzan® Biopolymer. This concentration was shown in lab tests to provide the desired 9 to 12 YP required to clean the well bore. One ppb MgO and 1 ppb of oxygen scavenger were also added. The MgO was added to buffer the pH of the fluid, and the oxygen scavenger was used to help prevent temperature degradation at the anticipated 275°F BHT. Liquid Flowzan® Biopolymer was used to sweep the hole at regular intervals during the clean-up operation and to maintain the necessary rheological properties, which resulted in a successful cleanup.



Case History #4 - Wyoming
A major operator was drilling a series of three horizontal wells in Converse County, Wyoming, using a CaCl2 drill-in fluid for the lateral sections. These wells were drilled with 1,500-2,000 ft of lateral displacement with a 6½" wellbore. The CaCl2 fluid density was 10.8 lb/gal (30% CaCI2). Flowzan® Biopolymer was used to drill the lateral sections of the last two wells. The use of Flowzan® Biopolymer resulted in a 25-30% reduction in polymer usage when compared to the first well where a competitive product was used. In addition to the decreased usage, field personnel reported improvements in low shear rate rheology, more immediate polymer yield and improved viscosity retention. It was also noted that pH adjustments were not required to realize optimum performance with the Flowzan® Biopolymer.

Before using this product, the user is advised and cautioned to make its own determination and assessment of the safety and suitability of the product for the specific use in question and is further advised against relying on the information contained herein as it may relate to any specific use or application. It is the ultimate responsibility of the user to ensure that the product is suited and the information is applicable to the user’s specific application. Chevron Phillips Chemical Company LP does not make, and expressly disclaims, all warranties, including warranties of merchantability or fitness for a particular purpose, regardless of whether oral or written, express or implied, or allegedly arising from any usage of any trade or from any course of dealing in connection with the use of the information contained herein or the product itself. The user expressly assumes all risk and liability, whether based in contract, tort or otherwise, in connection with the use of the information contained herein or the product itself. Further, information contained herein is given without reference to any intellectual property issues, as well as federal, state or local laws which may be encountered in the use thereof. Such questions should be investigated by the user.