Abstract Reinjecting low-temperature tailwater into geothermal reservoirs leads to complex thermo-hydro-mechanical coupling processes, making it more difficult predict the thermal breakthrough of reservoirs. By taking example deep carbonate karst fissure type in Xianxian field China, this paper studied processes case reinjection based on previous tracer tests. It established a three-field model...

To provide a high-strength, non-resin organic plugging agent for water shutoff in carbonate fracture and cave reservoirs, high-strength gel was prepared with polyvinyl alcohol 1788 as gelant p-phthalaldehyde crosslinker this study. By selecting latent acids rather than strong acid such hydrochloric sulfuric catalysts, by adding clay sulphonated phenolic resin stabilisers to the gelation, drawba...

Carbonate fracture-vuggy reservoirs are one of the hot spots in oil and gas exploration development. However, it is extremely difficult to describe internal spatial structure unit understand interwell connection relationship. As a method measure reservoir characteristics feedback production information directly according detected concentration curve, tracer technology provides direct for people...