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Dristemp® Polymer

Dristemp® Polymer is a white, free-flowing synthetic polymer designed for high temperature drilling environments.  It is compatible with all commonly used materials in water-based drilling fluids including with Drispac® polymer for fluid loss control and inhibition. In typical fresh and saltwater muds, DRISTEMP® POLYMER has performed well up to 375°F in lab testing and has shown excellent performance in formate fluids above 400°F. In field muds, thermal stability might be expected to be higher. For very high temperature fresh or salt water applications DRISTEMP® POLYMER partners well with Driscal® D polymer, which should be phased into the system starting at around 350°F. 

Advantages of DRISTEMP® POLYMER

  • Controls HTHP fluid loss in most aqueous base fluids  
  • Effective over a broad temperature range
  • Improves drilling fluid suspension properties compared to competitive high temperature materials where barite settling can be an issue
  • Reduces differential sticking tendencies
  • Inhibits hydratable and sloughing shales
  • Performs effectively in high calcium/total hardness environments
  • As a fine granulated particle, DRISTEMP® POLYMER hydrates quickly without forming "fish-eyes"
  • Is non-fermenting
Application Material Needed
HTHP fluid-loss control 1 to 6 ppb (3 to 17 kg/m3)
Shale Inhibition  1 to 3 ppb (3 to 9 kg/m3)
Improved filter cake 0.5 to 5 ppb (1.5 to 14 kg/m3)
Improved and stabilized rheology 0.5 to 5 ppb (1.5 to 14 kg/m3)
 Cost

Dristemp® polymers are high-performance, hostile environment polymers which are cost-effective against other synthetic additives in these challenging fluid environments. Total well cost for interval drilled is usually lower.

Mud Types

All common water-based drilling fluids including fluids formulated with formate brines.

Mixing Requirements

DRISTEMP® POLYMER should be mixed slowly through conventional jet hoppers.

Handling

For specific instructions on handling, refer to the MSDS.

Packaging 

DRISTEMP™ POLYMER is packaged in 50-pound multi-wall sacks, 40 sacks per pallet

Recommendations

DRISTEMP®POLYMER is an excellent replacement for starch in hard, salty systems, particularly as increasing down hole temperatures degrade such products. It will also contribute to shale inhibition when combined with Drispac® polymer. Rheological properties can be stabilized with DRISTEMP® POLYMER, preventing barite settling in high temperature environments. This problem often accompanies the use of products such as Hostadrill 4706 and 2825 and other private label high temperature additives.

Information on Drilling Specialties Company's other high temperature polymers

As mentioned above and shown in the following data, DRISTEMP® POLYMER provides exceptional HTHP fluid loss control and rheological properties in a wide variety of fluids. However, Driscal® D polymer has considerably higher thermal stability than DRISTEMP® POLYMER. In lab tests, Driscal® D has delivered good fluid loss control as well as barite suspension after aging at temperatures up to 500°F. The highest bottom hole temperature in which Driscal® D has been used is reported to be in excess of 500°F in California geothermal wells and in a steam flood in Alberta, Canada.

Unlike DRISTEMP® POLYMER, Driscal® D does not perform well in formate muds. Further, in certain water base muds, it has been observed in lab testing that Driscal® D does not provide good HTHP fluid loss control until the muds are aged at high temperature (approximately 330°F). Therefore, for very high temperature field applications we recommend using DRISTEMP® POLYMER to about 375°F while beginning to replace it with Driscal® D at approximately 350°F.

In silicate muds, Drilling Specialties’ hostile environment product, HE™ 300 Polymer, is recommended for HTHP fluid loss control.

For additional information about Drilling Specialties’ line of high performance, high temperature polymers, contact your local sales representative or our Technical Service group at 800-221-1956.

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. Drilling Specialties Company 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.