The Study On Preparation And Sand Consolidation Performance Of Modified Phenolic Resin

At present, most of oilfield development has been in determining the stage in our country, the well has become increasingly complicated and diversified. But now, the oilfield commonly use phenolic resin sand but the control effect is poor, part of oil well had a serious effect up on out of sand, and sand control valid period is short and so on, which has a serious influence on production of oil well. In this paper, we will introduce the cause of oil well sand production and the damage of the technology on related sand control. We will prominently recommend the chemical sand control technology, and present the advantages and disadvantages in corresponding condition.In this paper, we selected phenol and formaldehyde as the raw material to prepare the phenol-formaldehyde resin under the acid condition. Then we introduced the highly active epoxy group into phenol-formaldehyde resin, preparing the epoxy modified phenol-formaldehyde. Finally, epoxy phenol-formaldehyde modified by the organosilicon was obtained via ring-opening reaction of epoxy groups in epoxy-phenol resin with γ-aminopropyl-triethoxysilane.Organosilicon modified epoxy-phenol resin modified by Organosilicon modified epoxy-phenol resin will be made into resin-coated sand, we will obtain the formula via condition test, and the formula is sand:resin:curing agent:coupling agent=100:6:0.6:0.1. Then we taked it to research the medium resistance, and compared with other resin used by Oilfield company. The result is the organosilicon modified epoxy-phenol resin has strong alkali resistance, it still has a higher compressive strength over 8.8 after soaking in different solutions for 15 d.We inspected the applicable scope of organosilicon modified epoxy-phenol resin,through the experiment simulation and single factor experiment. The experiment showed that the resin is suitable for more than 45 ℃ sand control system of oil well. It will be consolidated under the experimental conditions of 45 ℃ and 48 h, increasing temperature or prolonged consolidation is advantageous to the resin crosslinking reaction.