... for LS water flooding: (1) Clay should exist in the sandstone, and (2) Crude oil must contain polar components. Similarly, Lager et al. (2006) stipulated a third condition to the previous two, which was (3)Divalent cations such as Ca 2+ and Mg 2+ must be one of the components of the formation water...

... of hydrocarbon instead of drilling a new side track or a well. drilling fluid chemistry drilling fluid property drilling fluids and materials completion surfactant system design damage mechanism formation damage filter cake formation water drilling fluid selection and formulation Upstream Oil...

... of the adsorption/desorption characteristics of the scale inhibitor and its efficiency at higher temperature. The proposed scale inhibitor treatment design included pre-flush/post-flush fluid and the SI main fluid in addition to the synthetic formation water (SFW). Lithium chloride was introduced to the main SI...

... Abstract Surface laboratory analyses of downhole water samples can typically introduce a significant delay between the sampling and reporting of fluid properties. The work described in this paper aims to quantify downhole formation water property measurements, and derivations from the high...

.... Results showed that harsh scale forms with mixing raw seawater and high total dissolved solids (TDS) tested formation water at higher temperatures under dynamic and static conditions. Scale inhibitors cannot effectively inhibit scale deposition in such harsh scaling conditions because of the issues...

... dioxide CO 2 +4 H 2 →CH 4 +2 H 2 O Fluid samples oil and formation water produced from oil and gas fields in Japan were collected and analyzed in order to clarify the existence and survivability of indigenous hydrogen- and methane-producing anaerobes under reservoir conditions. It has not been clarified...

... conformance improvement low elastic microsphere suspension stability formation water microsphere polymer microsphere interfacial tension Introduction Gangxi Oilfield is a typical loose sandstone and heterogeneous oilfield in China. Currently, the main EOR method in this oilfield is polymer...

... and productivity enhancement. Injection water, if incompatible with formation water, can induce scale precipitation and impose a significant threat to economic and efficient field operation. Reliable scale prediction is of critical importance for the selection of suitable injection water and development...

... (TDS) formation water. From static bottle tests with seawater, 74% strontium sulfate inhibition was achieved at 300°F. To eliminate sulfate scaling issues, a nanofiltration (NF) membrane-based technique was used to filter seawater. The SI performance was tested by both static bottle tests at different...

... composition sulfate fluid system hydration formation water Introduction Effective stimulation of oil and gas wells requires the use of efficient fracturing fluids that can perform under a variety of conditions. Hydraulic fracturing primarily uses water-based fluids to initiate and extend an open...

... Surface sampling is required for monitoring: Sodium ion is considered as one of the major constituents of formation water; however, there should normally be no problem due to the presence of sodium ions. The only problem that might occur is the precipitation of NaCl due to the extremely...

... and sampling data. By integrating this framework with a geological model, better planning and geosteering of horizontal wells could be accomplished. This case study will help in characterizing the field, and therefore lead to better simulation models. well logging Fluid Dynamics module formation water...

... to avoid injectivity loss by scale generation. The contribution of drilling fluids or brine contaminants difficult the recovery of representative condensed water and formation water samples from HP/HT gas production wells and water disposal wells. The present study integrates bottom hole water sampling...

... by investigating the dissolution-diffusion-convection process. In this mechanism, after the CO 2 is being injected into the subsurface formations, it dissolves into the formation water (brine) such that forming a mixture with its density becomes larger than the host formation water and eventually induces...

... analysis showed a recovery of 17% of the chemicals pumped during the treatment with a stabilized production rate of 3 MBOPD. Further water analysis indicated the presence of 25-30% formation water while the critical ions analyzed showed the effectiveness of the corrosion inhibitor package, acid system...

..., the PNC and the PNS are the same tools with different data acquisition modes. The PNC technology measures the amounts of capture gamma rays from slow moving neutron interactions. Chlorine, one of the elements that is readily found in formation water, is known to have a very large capture cross-section...

... Abstract Accurate chemical and physical properties of hydrocarbon and formation water are required for efficient reservoir and production management. During exploration and field development, a sample of formation fluids is frequently required. One method to obtain reservoir fluid samples...