缝洞型碳酸盐岩油藏油井高含水期关井压锥技术优化

Shut-in coning technique optimization in fracture-cave carbonate reservoir with bottom water

潘昭才 袁晓满 谷雨 王俊芳 补璐璐 顾雪梅

PAN Shaocai YUAN Xiaoman GU Yu WANG Junfang BU Lulu GU Xuemei

塔里木油田分公司开发事业部，新疆库尔勒　841000 华北油田公司采油一厂，河北任丘　062552

Exploration and Development Department, Tarim Oilfield Company, SINOPEC, Korla 841000, China No.1 Oil Production Plant, Huabei Oilfield Company, Renqiu 062552, China

针对某古潜山A区块，高含水期关井压锥指标体系不完善、部分指标确定不尽合理、细化量化程度不够等问题采用综合评判的方法，提出了新的评判指标界限：关井压锥效果评价指标3项，地质选井条件和技术参数9项，能更科学、更真实反映实际情况。分析认为在进行高含水期关井压锥时应优先选择关井压锥效果好的油井，慎重选择效果中等的油井，摈弃效果差的油井。研究方法可为同类型油藏开展高含水期关井压锥提供借鉴。

Taking a fracture-cave carbonate reservoir with bottom water in some ancient buried hill as research subject, based on analyzing shut-in coning well selection conditions of single wells in high water cut stage and optimizing technical parameter, new evaluation indexes were proposed to improve the existing evaluation indexes by adopting comprehensive evaluation method. The current index system has some problems, for example, index system is not perfect; some indicators are not unreasonably determined and quantify and refinement degree of some are insufficient. The new system is include three effect evaluation indexes for well shut-in coning and nine geological well selection conditions and technical parameters, which could be more scientific, more real to reflect the actual situation. In conclusion, oil wells that have prefect shut-in coning effect should be preferable; the moderate effects wells are carefully chose and the poor effect oil wells should be abandoned when shut-in well and coning at high water cut stage. This method could provide reference to similar block or reservoir well shut-in and coning at high water cut stage.