The Research And Applieation Of The Latex Anti-gas Migratory Slurry Systern

The gas channeling happen frequently in the well cementation process, Especially in deep well and gas well, The formation pressure high, the well bore structure is complex, easier to have the gas channeling, causes the limestone cemented strength to reduce, affects the cementing quality, and the serious influence oil well and gas well's regular production and reduces recovery ratio [1].At present China in the solution channeling of cementing technology, developed did not premeation cement and the low dehydration, the short transition interval, the micro dilatation, higher early strength cement and against gas channeling cement slurry[2] and foaming cement, foam concrete and so on, The part has solved the oil well because of the gas channeling influence the question of cementing quality。But against gas channeling cement slurry system regarding the high pressure, the research development is backward, existing cement slurry system toughness is specially bad, easy to breakdown, interfacial boundary cementation bad, the cementing quality cannot meet the construction requirements。Developed one kind of new SDJR latex-cement slurry system, to its conventional performance (for example dehydration, rheological propertyless and so on), the fold resistance intensity, the compressive resistance strength as well as against gas channeling performance and so on to conduct the experimental study.Uses the domestically produced rubber-latex and the matching additive, through the experimental study latex-cement slurry's stable performance, the dehydration performance and the rheological propertyless, against the gas channeling as well as the limestone cemented performance。The result indicated:Rubber-latex auxiliary by appropriate stabilizer, may take the cement slurry the additive, compounds has against gas channeling and the good tough performance latex-cement slurry; Coordinate use right amount additive, but obviously reduces the latex-cement slurry the fluid loss, enhances the cement slurry the rheological propertyless, and control the thickening time of cement slurry, causes the latex-cement slurry overall performance to satisfy the cementing request.