论文部分内容阅读
长深D平2井是吉林油田为有效经济动用长岭气田登娄库组致密砂岩气藏部署一口裸眼多级压裂试验井。长深D平2井水平段长837m,砂岩钻遇率90.2%,泥岩膨胀严重、泥岩段长、泥岩施工难度大。在克服单级超长裸眼井段高滤失及泥岩穿层压裂的高难施工问题,长深D平2井10级压裂累计加入支撑剂838m3,其中单级最大加砂量达到116m3,单日最大加砂量达到324m3。压后试气8mm油嘴,油压24.5MPa,日产气21.3万方,取得了良好试验效果,进一步坚定了吉林油田低孔低渗致密砂岩气藏水平井大规模压裂开发的信心。
Changshen D Ping-2 well is an open-hole multi-stage fracturing test well deployed in Jilin Oilfield to effectively and economically utilize the tight sandstone gas of Denglouku Formation in Changling Gas Field. The length of horizontal section of D 2 deep well is 837m, the rate of sandstone drilling is 90.2%, mudstone swelling is serious, mudstone length is long, and mudstone construction is difficult. In order to overcome the high-pressure construction loss of single-stage extra-long open-hole section and the mud-rock formation fracturing, 838m3 of proppant was added to the 10 fractures of Changping deep D 2 well, in which the maximum single-stage sand addition reached 116m 3 The maximum daily amount of sand reached 324m3. After the pressure gas test 8mm nozzle, hydraulic pressure 24.5MPa, Nissan 21.3 million square, and achieved good results, and further strengthened the confidence of the large-scale fracturing development of horizontal well of low porosity and low permeability tight sandstone gas reservoir in Jilin Oilfield.