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Motatan油田位于委内瑞拉西部。该地区由两个原始低渗透砂岩构成的透镜状储集层组成 ,并且大多数砂岩层中存在高密度的天然微裂缝。由于天然裂缝的窜流 ,DomoSur地区呈现出高含水问题。因此提出用凝胶技术来缓解该问题。选定 4口井 ,在特定的油藏条件和具有渗透率不成比例降低效应 (DPR )的情况下注入凝胶体系。全部运用替挤技术并达到约 1 5～ 1 7ft的穿透半径便可注入凝胶。结果显示该体系可以有效地降低油井的产水量 ,日产水减少6 90 0bbl/d (80 4 % ) ,日增油 70 0bbl/d ,且含水稳定。
The Motatan field is located in western Venezuela. The area consists of a lenticular reservoir of two primitive low-permeability sandstones and most of the sandstone layers have high-density natural microfractures. The DomoSur region presents high water-cut problems due to the channeling of natural fractures. Therefore, gel technology is proposed to alleviate this problem. Four wells were selected and injected into the gel system under certain reservoir conditions and with a DPR reduction. All of the use of alternative technology and reach the penetration radius of about 15 ~ 17ft can be injected into the gel. The results show that the system can effectively reduce the production of oil wells. The daily production of water is reduced by 6 90 0bbl / d (80 4%) and the daily oil production is increased to 70 0bbl / d with stable water content.