... polymer latex geologist united states government cement formulation slurry adsorption mechanism retarder geothermal well concentration copolymer suspension resistance application sb latex rheology portland cement stability sciencedirect composition Introduction In the context...

... hydration starts and viscosity increases dramatically. This limits the amount of polymer one can add to a slurry design. Then as the slurry is being pumped to higher temperature zones, thermal thinning occurs, and a pumpable surface rheology often does not sustain enough suspension capability once placed...

..., and those which are comparable to the oilfield cements currently in use. Introducing an innovative geopolymer solid activator package enables mixing and pumping of geopolymer slurries without any modification of the current equipment or the job execution method and eliminate the need to handle corrosive...

... on varying the following parameters: OBM contamination (0%, 0.6%, 1.1%, 2.2%, 4.3%) Curing time (4 hrs, 6 hrs, 8 hrs, 1 day, 3 days, 7 days) Temperature (25˚C, 75 ˚C) API recommendations were followed for preparing the cement slurries. The destructive, as well as non-destructive tests were...

... are needed to meet a variety of functional needs that are suitable for the many diverse wellbore conditions. However, using large amounts of certain additives could have adverse effects which can destabilize the slurry at surface conditions. Using vesicles, cement additives are delivered without requiring...

... of the cement slurry formulated with the fluid loss copolymer was achieved. Additionally, it was determined that an increase in Đ improved fluid loss performance for a given Mn and Rg. More interestingly, an increase in Rg at fixed Mn and Đ decreases fluid-loss performance, which is counterintuitive...

... Even though PV remains important for cement pumping capability purposes, as the focus of our study is mostly on cement slurry stability at rest prior to setting, PV data will not be discussed here. Additional complexity with cement systems for both theoretical and experimental developments...

.... To stabilize the cement slurry at high temperature and prevent settling, a combination of a commercial welan gum and a delayed release, crosslinked guar gum high temperature suspending agent was used. Instruments and Procedures Cement characterization Phase composition of the cement sample...

... acid attack. Hence, the primary objective of this study is to investigate the effects of hydroxyapatite on cement degradation. To investigate the impacts of hydroxyapatite additive on oil well cement performance, two Class H cement slurry formulations (baseline/HS and hydroxyapatite containing cement...

... standards that styrene butadiene latex very effectively reduce permeability but diblock copolymer can to a fair extent be considered as a very effective substitute to design gas tight slurries. drilling fluid selection and formulation drilling fluid formulation fluid loss control additive drilling...

... polymer cement retarder provides unique synergistic property in presence of an AMPS ® -based cement fluid loss control polymer that is giving additional suspension capability useful for water-extended lightweight density cement slurry; thereby, eliminating the need for an extra viscosifying agent...

... Abstract Synthetic polymers have long been used as fluid-loss additives (FLAs) in hydraulic cement slurries for cementing subterranean zones. Typically used synthetic polymeric materials include N,N-dimethylacrylamide and sulfonated acrylamide monomers, which are preferred for high temperature...

... geopolymer/mud ratio (by volume). The primary benefits of such a blend include better compatibility of the slurry with NAFs, reduced risk of poor cementation, inexpensive source material as well as an environmentally friendly on-site/in-situ disposal of NAFs. The rheological properties, short-term and long...

... Abstract Successful liner cementing in unconventional shale wells is strongly dependent on slurry stability. A delayed-release, high-temperature suspending agent was developed that provides viscosification and stabilization of the slurry without causing excessive viscosification and mixing...

... be increased by using less organic acid; for instance, decreasing organic loading from 16 to 4 ppt led to crosslink time increase of 97 to 510 s. To further simplify field handling of such organic acid material, the organic acid is slurried in hydrocarbon. Dissolution experiments demonstrate that the slurried...

... selection and formulation casing and cementing fluid loss control additive api fluid loss value cement slurry molecular weight loss control statistical polymer diblock copolymer cement chemistry copolymer fluid loss control cement formulation concentration admixture slurry cement property...

... carbonation slurry scco 2 spe 164104 gas phase cementitious matrix liquid phase Introduction As early as 1977, Marchetti proposed the capture of carbon dioxide from the exhaust streams of power plants and subsequent storage in suitable subterraneous geological formations as a possibility...

... xanthan carbonate diutan viscosity suspension application reaction molecular weight solubility scleroglucan slurry hydration organic carbonate activation Introduction Almost all wellbore operations, starting from the drilling phase through the completions, stimulation, workover...

... Abstract Polymeric viscosifiers are added to cement slurries for a variety of reasons, including prevention of particle settling and control of fluid loss, gas migration, and free-water. Many of these functions are critically important after the cement slurry has been placed behind the casing...

... slurry. In our study, we first present an effective retarding admixture for this cement. Comparison of four different retarders (boric acid, tartaric acid, calcium lignosulfonate and butylene triamine pentamethylene phosphonic acid) revealed that only a combination of boric and tartaric acid...