新型储层改造用暂堵转向剂研究及应用.pdfVIP

C HEM ICA L ENGIN EERING O F OIL GAS M Pa T E A DOI issn j Research and application of a new type of temporary plugging diverting agent for reservoir reconstruction Xiong Ying1 2 Zheng Xueqin1 Long Shunmin1 2 Research I ns titute o N atural Gas Technolo PetroChina Southw es t Oil Gas ield Com any f gy f p Cheng du S ichuan China S ichuan P rov ince K ey L abo ratory of Shale Gas Ev aluation and Exp loitation Abstract Aiming at the problem s of low breakthrough pressure low temperature resistance of temporary plugging diverting agent and scattering unevenly due to fiber w inding or togethered clouddue to surf ace rapid hy dration the linear poly mer fine particles w ith particle size smaller w ater sw elling poly mer w ere matched and it w as dispersed w ith mineral oil to make it have certain hy drophobic surf ace then a new ty pe of temporary plugging diverting agent f or reservoir reconstruction w as prepared T he temporary plugging diverting agent take the stack and bridging action of diff erent particle size material to f or m plugging agent lay er in the matrix and cracks f ace and in the cracks internal use the w ater absorption ex pansion eff ect of w ater sw elling poly mer to filled the pore betw een particles f urtherly and improve the plugging